Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/connect.c |
| 3 | * |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2009 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, write to the Free Software |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | */ |
| 21 | #include <linux/fs.h> |
| 22 | #include <linux/net.h> |
| 23 | #include <linux/string.h> |
| 24 | #include <linux/list.h> |
| 25 | #include <linux/wait.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 26 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/pagemap.h> |
| 28 | #include <linux/ctype.h> |
| 29 | #include <linux/utsname.h> |
| 30 | #include <linux/mempool.h> |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 31 | #include <linux/delay.h> |
Steve French | f191401 | 2005-08-18 09:37:34 -0700 | [diff] [blame] | 32 | #include <linux/completion.h> |
Igor Mammedov | aaf737a | 2007-04-03 19:16:43 +0000 | [diff] [blame] | 33 | #include <linux/kthread.h> |
Steve French | 0ae0efa | 2005-10-10 10:57:19 -0700 | [diff] [blame] | 34 | #include <linux/pagevec.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 35 | #include <linux/freezer.h> |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 36 | #include <linux/namei.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <asm/uaccess.h> |
| 38 | #include <asm/processor.h> |
Jeff Layton | 50b64e3 | 2009-06-02 06:55:20 -0400 | [diff] [blame] | 39 | #include <linux/inet.h> |
Steve French | 0e2beda | 2009-01-30 21:24:41 +0000 | [diff] [blame] | 40 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "cifspdu.h" |
| 42 | #include "cifsglob.h" |
| 43 | #include "cifsproto.h" |
| 44 | #include "cifs_unicode.h" |
| 45 | #include "cifs_debug.h" |
| 46 | #include "cifs_fs_sb.h" |
| 47 | #include "ntlmssp.h" |
| 48 | #include "nterr.h" |
| 49 | #include "rfc1002pdu.h" |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 50 | #include "fscache.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | #define CIFS_PORT 445 |
| 53 | #define RFC1001_PORT 139 |
| 54 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 55 | /* SMB echo "timeout" -- FIXME: tunable? */ |
| 56 | #define SMB_ECHO_INTERVAL (60 * HZ) |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | extern mempool_t *cifs_req_poolp; |
| 59 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 60 | /* FIXME: should these be tunable? */ |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 61 | #define TLINK_ERROR_EXPIRE (1 * HZ) |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 62 | #define TLINK_IDLE_EXPIRE (600 * HZ) |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 63 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 64 | static int ip_connect(struct TCP_Server_Info *server); |
| 65 | static int generic_ip_connect(struct TCP_Server_Info *server); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 66 | static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink); |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 67 | static void cifs_prune_tlinks(struct work_struct *work); |
Jeff Layton | b9bce2e | 2011-07-06 08:10:39 -0400 | [diff] [blame] | 68 | static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, |
| 69 | const char *devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 71 | /* |
| 72 | * cifs tcp session reconnection |
| 73 | * |
| 74 | * mark tcp session as reconnecting so temporarily locked |
| 75 | * mark all smb sessions as reconnecting for tcp session |
| 76 | * reconnect tcp session |
| 77 | * wake up waiters on reconnection? - (not needed currently) |
| 78 | */ |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 79 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | cifs_reconnect(struct TCP_Server_Info *server) |
| 81 | { |
| 82 | int rc = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 83 | struct list_head *tmp, *tmp2; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 84 | struct cifs_ses *ses; |
| 85 | struct cifs_tcon *tcon; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 86 | struct mid_q_entry *mid_entry; |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 87 | struct list_head retry_list; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 90 | if (server->tcpStatus == CifsExiting) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 91 | /* the demux thread will exit normally |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | next time through the loop */ |
| 93 | spin_unlock(&GlobalMid_Lock); |
| 94 | return rc; |
| 95 | } else |
| 96 | server->tcpStatus = CifsNeedReconnect; |
| 97 | spin_unlock(&GlobalMid_Lock); |
| 98 | server->maxBuf = 0; |
| 99 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 100 | cFYI(1, "Reconnecting tcp session"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | /* before reconnecting the tcp session, mark the smb session (uid) |
| 103 | and the tid bad so they are not used until reconnected */ |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 104 | cFYI(1, "%s: marking sessions and tcons for reconnect", __func__); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 105 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 106 | list_for_each(tmp, &server->smb_ses_list) { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 107 | ses = list_entry(tmp, struct cifs_ses, smb_ses_list); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 108 | ses->need_reconnect = true; |
| 109 | ses->ipc_tid = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 110 | list_for_each(tmp2, &ses->tcon_list) { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 111 | tcon = list_entry(tmp2, struct cifs_tcon, tcon_list); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 112 | tcon->need_reconnect = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 115 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | /* do not want to be sending data on a socket we are freeing */ |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 118 | cFYI(1, "%s: tearing down socket", __func__); |
Jeff Layton | 72ca545 | 2008-12-01 07:09:36 -0500 | [diff] [blame] | 119 | mutex_lock(&server->srv_mutex); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 120 | if (server->ssocket) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 121 | cFYI(1, "State: 0x%x Flags: 0x%lx", server->ssocket->state, |
| 122 | server->ssocket->flags); |
Trond Myklebust | 91cf45f | 2007-11-12 18:10:39 -0800 | [diff] [blame] | 123 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 124 | cFYI(1, "Post shutdown state: 0x%x Flags: 0x%lx", |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 125 | server->ssocket->state, |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 126 | server->ssocket->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | sock_release(server->ssocket); |
| 128 | server->ssocket = NULL; |
| 129 | } |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 130 | server->sequence_number = 0; |
| 131 | server->session_estab = false; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 132 | kfree(server->session_key.response); |
| 133 | server->session_key.response = NULL; |
| 134 | server->session_key.len = 0; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 135 | server->lstrp = jiffies; |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 136 | mutex_unlock(&server->srv_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 138 | /* mark submitted MIDs for retry and issue callback */ |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 139 | INIT_LIST_HEAD(&retry_list); |
| 140 | cFYI(1, "%s: moving mids to private list", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 142 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
| 143 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 144 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) |
Steve French | ad8b15f | 2008-08-08 21:10:16 +0000 | [diff] [blame] | 145 | mid_entry->midState = MID_RETRY_NEEDED; |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 146 | list_move(&mid_entry->qhead, &retry_list); |
| 147 | } |
| 148 | spin_unlock(&GlobalMid_Lock); |
| 149 | |
| 150 | cFYI(1, "%s: issuing mid callbacks", __func__); |
| 151 | list_for_each_safe(tmp, tmp2, &retry_list) { |
| 152 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 153 | list_del_init(&mid_entry->qhead); |
| 154 | mid_entry->callback(mid_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
Jeff Layton | 7fdbaa1 | 2011-06-10 16:14:57 -0400 | [diff] [blame] | 157 | do { |
Steve French | 6c3d890 | 2006-07-31 22:46:20 +0000 | [diff] [blame] | 158 | try_to_freeze(); |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 159 | |
| 160 | /* we should try only the port we connected to before */ |
| 161 | rc = generic_ip_connect(server); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 162 | if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 163 | cFYI(1, "reconnect error %d", rc); |
Steve French | 0cb766a | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 164 | msleep(3000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } else { |
| 166 | atomic_inc(&tcpSesReconnectCount); |
| 167 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 168 | if (server->tcpStatus != CifsExiting) |
Steve French | fd88ce9 | 2011-04-12 01:01:14 +0000 | [diff] [blame] | 169 | server->tcpStatus = CifsNeedNegotiate; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 170 | spin_unlock(&GlobalMid_Lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | } |
Jeff Layton | 7fdbaa1 | 2011-06-10 16:14:57 -0400 | [diff] [blame] | 172 | } while (server->tcpStatus == CifsNeedReconnect); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | return rc; |
| 175 | } |
| 176 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 177 | /* |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 178 | return codes: |
| 179 | 0 not a transact2, or all data present |
| 180 | >0 transact2 with that much data missing |
| 181 | -EINVAL = invalid transact2 |
| 182 | |
| 183 | */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 184 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 185 | { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 186 | struct smb_t2_rsp *pSMBt; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 187 | int remaining; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 188 | __u16 total_data_size, data_in_this_rsp; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 189 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 190 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 191 | return 0; |
| 192 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 193 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
| 194 | /* check for parm and data offset going beyond end of smb */ |
| 195 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 196 | cFYI(1, "invalid transact2 word count"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 197 | return -EINVAL; |
| 198 | } |
| 199 | |
| 200 | pSMBt = (struct smb_t2_rsp *)pSMB; |
| 201 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 202 | total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); |
| 203 | data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 204 | |
Jeff Layton | c0c7b90 | 2011-03-31 17:32:54 -0400 | [diff] [blame] | 205 | if (total_data_size == data_in_this_rsp) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 206 | return 0; |
Jeff Layton | c0c7b90 | 2011-03-31 17:32:54 -0400 | [diff] [blame] | 207 | else if (total_data_size < data_in_this_rsp) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 208 | cFYI(1, "total data %d smaller than data in frame %d", |
| 209 | total_data_size, data_in_this_rsp); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 210 | return -EINVAL; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 211 | } |
Jeff Layton | c0c7b90 | 2011-03-31 17:32:54 -0400 | [diff] [blame] | 212 | |
| 213 | remaining = total_data_size - data_in_this_rsp; |
| 214 | |
| 215 | cFYI(1, "missing %d bytes from transact2, check next response", |
| 216 | remaining); |
| 217 | if (total_data_size > maxBufSize) { |
| 218 | cERROR(1, "TotalDataSize %d is over maximum buffer %d", |
| 219 | total_data_size, maxBufSize); |
| 220 | return -EINVAL; |
| 221 | } |
| 222 | return remaining; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 223 | } |
| 224 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 225 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 226 | { |
| 227 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; |
| 228 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 229 | char *data_area_of_target; |
| 230 | char *data_area_of_buf2; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 231 | int remaining; |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 232 | unsigned int byte_count, total_in_buf; |
| 233 | __u16 total_data_size, total_in_buf2; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 234 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 235 | total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 236 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 237 | if (total_data_size != |
| 238 | get_unaligned_le16(&pSMB2->t2_rsp.TotalDataCount)) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 239 | cFYI(1, "total data size of primary and secondary t2 differ"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 240 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 241 | total_in_buf = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 242 | |
| 243 | remaining = total_data_size - total_in_buf; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 244 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 245 | if (remaining < 0) |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 246 | return -EPROTO; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 247 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 248 | if (remaining == 0) /* nothing to do, ignore */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 249 | return 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 250 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 251 | total_in_buf2 = get_unaligned_le16(&pSMB2->t2_rsp.DataCount); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 252 | if (remaining < total_in_buf2) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 253 | cFYI(1, "transact2 2nd response contains too much data"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | /* find end of first SMB data area */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 257 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 258 | get_unaligned_le16(&pSMBt->t2_rsp.DataOffset); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 259 | /* validate target area */ |
| 260 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 261 | data_area_of_buf2 = (char *)&pSMB2->hdr.Protocol + |
| 262 | get_unaligned_le16(&pSMB2->t2_rsp.DataOffset); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 263 | |
| 264 | data_area_of_target += total_in_buf; |
| 265 | |
| 266 | /* copy second buffer into end of first buffer */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 267 | total_in_buf += total_in_buf2; |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 268 | /* is the result too big for the field? */ |
| 269 | if (total_in_buf > USHRT_MAX) |
| 270 | return -EPROTO; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 271 | put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount); |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 272 | |
| 273 | /* fix up the BCC */ |
Jeff Layton | 820a803 | 2011-05-04 08:05:26 -0400 | [diff] [blame] | 274 | byte_count = get_bcc(pTargetSMB); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 275 | byte_count += total_in_buf2; |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 276 | /* is the result too big for the field? */ |
| 277 | if (byte_count > USHRT_MAX) |
| 278 | return -EPROTO; |
Jeff Layton | 820a803 | 2011-05-04 08:05:26 -0400 | [diff] [blame] | 279 | put_bcc(byte_count, pTargetSMB); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 280 | |
Steve French | be8e3b0 | 2011-04-29 05:40:20 +0000 | [diff] [blame] | 281 | byte_count = be32_to_cpu(pTargetSMB->smb_buf_length); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 282 | byte_count += total_in_buf2; |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 283 | /* don't allow buffer to overflow */ |
| 284 | if (byte_count > CIFSMaxBufSize) |
| 285 | return -ENOBUFS; |
Steve French | be8e3b0 | 2011-04-29 05:40:20 +0000 | [diff] [blame] | 286 | pTargetSMB->smb_buf_length = cpu_to_be32(byte_count); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 287 | |
Jeff Layton | 2a2047bc | 2011-04-27 13:29:49 -0400 | [diff] [blame] | 288 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
| 289 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 290 | if (remaining == total_in_buf2) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 291 | cFYI(1, "found the last secondary response"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 292 | return 0; /* we are done */ |
| 293 | } else /* more responses to go */ |
| 294 | return 1; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 297 | static void |
| 298 | cifs_echo_request(struct work_struct *work) |
| 299 | { |
| 300 | int rc; |
| 301 | struct TCP_Server_Info *server = container_of(work, |
| 302 | struct TCP_Server_Info, echo.work); |
| 303 | |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 304 | /* |
Jeff Layton | 195291e | 2011-02-09 12:01:42 -0500 | [diff] [blame] | 305 | * We cannot send an echo until the NEGOTIATE_PROTOCOL request is |
| 306 | * done, which is indicated by maxBuf != 0. Also, no need to ping if |
| 307 | * we got a response recently |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 308 | */ |
Jeff Layton | 195291e | 2011-02-09 12:01:42 -0500 | [diff] [blame] | 309 | if (server->maxBuf == 0 || |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 310 | time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ)) |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 311 | goto requeue_echo; |
| 312 | |
| 313 | rc = CIFSSMBEcho(server); |
| 314 | if (rc) |
| 315 | cFYI(1, "Unable to send echo request to server: %s", |
| 316 | server->hostname); |
| 317 | |
| 318 | requeue_echo: |
| 319 | queue_delayed_work(system_nrt_wq, &server->echo, SMB_ECHO_INTERVAL); |
| 320 | } |
| 321 | |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 322 | static bool |
| 323 | allocate_buffers(char **bigbuf, char **smallbuf, unsigned int size, |
| 324 | bool is_large_buf) |
| 325 | { |
| 326 | char *bbuf = *bigbuf, *sbuf = *smallbuf; |
| 327 | |
| 328 | if (bbuf == NULL) { |
| 329 | bbuf = (char *)cifs_buf_get(); |
| 330 | if (!bbuf) { |
| 331 | cERROR(1, "No memory for large SMB response"); |
| 332 | msleep(3000); |
| 333 | /* retry will check if exiting */ |
| 334 | return false; |
| 335 | } |
| 336 | } else if (is_large_buf) { |
| 337 | /* we are reusing a dirty large buf, clear its start */ |
| 338 | memset(bbuf, 0, size); |
| 339 | } |
| 340 | |
| 341 | if (sbuf == NULL) { |
| 342 | sbuf = (char *)cifs_small_buf_get(); |
| 343 | if (!sbuf) { |
| 344 | cERROR(1, "No memory for SMB response"); |
| 345 | msleep(1000); |
| 346 | /* retry will check if exiting */ |
| 347 | return false; |
| 348 | } |
| 349 | /* beginning of smb buffer is cleared in our buf_get */ |
| 350 | } else { |
| 351 | /* if existing small buf clear beginning */ |
| 352 | memset(sbuf, 0, size); |
| 353 | } |
| 354 | |
| 355 | *bigbuf = bbuf; |
| 356 | *smallbuf = sbuf; |
| 357 | |
| 358 | return true; |
| 359 | } |
| 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | static int |
Al Viro | 7c97c20 | 2011-06-21 08:51:28 -0400 | [diff] [blame] | 362 | cifs_demultiplex_thread(void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | int length; |
Al Viro | 7c97c20 | 2011-06-21 08:51:28 -0400 | [diff] [blame] | 365 | struct TCP_Server_Info *server = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | unsigned int pdu_length, total_read; |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 367 | char *buf = NULL, *bigbuf = NULL, *smallbuf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | struct smb_hdr *smb_buffer = NULL; |
| 369 | struct msghdr smb_msg; |
| 370 | struct kvec iov; |
| 371 | struct socket *csocket = server->ssocket; |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 372 | struct list_head *tmp, *tmp2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | struct task_struct *task_to_wake = NULL; |
| 374 | struct mid_q_entry *mid_entry; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 375 | char temp; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 376 | bool isLargeBuf = false; |
| 377 | bool isMultiRsp; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 378 | int reconnect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | current->flags |= PF_MEMALLOC; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 381 | cFYI(1, "Demultiplex PID: %d", task_pid_nr(current)); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 382 | |
| 383 | length = atomic_inc_return(&tcpSesAllocCount); |
| 384 | if (length > 1) |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 385 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 386 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Rafael J. Wysocki | 8314418 | 2007-07-17 04:03:35 -0700 | [diff] [blame] | 388 | set_freezable(); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 389 | while (server->tcpStatus != CifsExiting) { |
Steve French | ede1327 | 2005-08-30 20:10:14 -0700 | [diff] [blame] | 390 | if (try_to_freeze()) |
| 391 | continue; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 392 | |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 393 | if (!allocate_buffers(&bigbuf, &smallbuf, |
| 394 | sizeof(struct smb_hdr), isLargeBuf)) |
| 395 | continue; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 396 | |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 397 | isLargeBuf = false; |
| 398 | isMultiRsp = false; |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 399 | smb_buffer = (struct smb_hdr *)smallbuf; |
| 400 | buf = smallbuf; |
| 401 | iov.iov_base = buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | iov.iov_len = 4; |
| 403 | smb_msg.msg_control = NULL; |
| 404 | smb_msg.msg_controllen = 0; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 405 | pdu_length = 4; /* enough to get RFC1001 header */ |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 406 | |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 407 | incomplete_rcv: |
Steve French | fd88ce9 | 2011-04-12 01:01:14 +0000 | [diff] [blame] | 408 | if (echo_retries > 0 && server->tcpStatus == CifsGood && |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 409 | time_after(jiffies, server->lstrp + |
| 410 | (echo_retries * SMB_ECHO_INTERVAL))) { |
| 411 | cERROR(1, "Server %s has not responded in %d seconds. " |
| 412 | "Reconnecting...", server->hostname, |
| 413 | (echo_retries * SMB_ECHO_INTERVAL / HZ)); |
| 414 | cifs_reconnect(server); |
| 415 | csocket = server->ssocket; |
| 416 | wake_up(&server->response_q); |
| 417 | continue; |
| 418 | } |
| 419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | length = |
| 421 | kernel_recvmsg(csocket, &smb_msg, |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 422 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 424 | if (server->tcpStatus == CifsExiting) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | break; |
| 426 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 427 | cFYI(1, "Reconnect after server stopped responding"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | cifs_reconnect(server); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 429 | cFYI(1, "call to reconnect done"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | csocket = server->ssocket; |
| 431 | continue; |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 432 | } else if (length == -ERESTARTSYS || |
| 433 | length == -EAGAIN || |
| 434 | length == -EINTR) { |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 435 | msleep(1); /* minimum sleep to prevent looping |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | allowing socket to clear and app threads to set |
| 437 | tcpStatus CifsNeedReconnect if server hung */ |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 438 | if (pdu_length < 4) { |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 439 | iov.iov_base = (4 - pdu_length) + buf; |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 440 | iov.iov_len = pdu_length; |
| 441 | smb_msg.msg_control = NULL; |
| 442 | smb_msg.msg_controllen = 0; |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 443 | goto incomplete_rcv; |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 444 | } else |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 445 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | } else if (length <= 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 447 | cFYI(1, "Reconnect after unexpected peek error %d", |
| 448 | length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | cifs_reconnect(server); |
| 450 | csocket = server->ssocket; |
| 451 | wake_up(&server->response_q); |
| 452 | continue; |
Petr Tesarik | 2a97468 | 2007-11-20 02:24:08 +0000 | [diff] [blame] | 453 | } else if (length < pdu_length) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 454 | cFYI(1, "requested %d bytes but only got %d bytes", |
| 455 | pdu_length, length); |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 456 | pdu_length -= length; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 457 | msleep(1); |
| 458 | goto incomplete_rcv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
Steve French | 67010fb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 460 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 461 | /* The right amount was read from socket - 4 bytes */ |
| 462 | /* so we can now interpret the length field */ |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 463 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 464 | /* the first byte big endian of the length field, |
| 465 | is actually not part of the length but the type |
| 466 | with the most common, zero, as regular data */ |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 467 | temp = *buf; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 468 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 469 | /* Note that FC 1001 length is big endian on the wire, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 470 | but we convert it here so it is always manipulated |
| 471 | as host byte order */ |
Steve French | be8e3b0 | 2011-04-29 05:40:20 +0000 | [diff] [blame] | 472 | pdu_length = be32_to_cpu(smb_buffer->smb_buf_length); |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 473 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 474 | cFYI(1, "rfc1002 length 0x%x", pdu_length+4); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 475 | |
| 476 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 477 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 478 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 479 | cFYI(1, "Good RFC 1002 session rsp"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 480 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 481 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 482 | /* we get this from Windows 98 instead of |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 483 | an error on SMB negprot response */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 484 | cFYI(1, "Negative RFC1002 Session Response Error 0x%x)", |
| 485 | pdu_length); |
Jeff Layton | 7332f2a | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 486 | /* give server a second to clean up */ |
| 487 | msleep(1000); |
| 488 | /* always try 445 first on reconnect since we get NACK |
| 489 | * on some if we ever connected to port 139 (the NACK |
| 490 | * is since we do not begin with RFC1001 session |
| 491 | * initialize frame) |
| 492 | */ |
Jeff Layton | 3267039 | 2010-09-03 12:00:50 -0400 | [diff] [blame] | 493 | cifs_set_port((struct sockaddr *) |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 494 | &server->dstaddr, CIFS_PORT); |
Jeff Layton | 7332f2a | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 495 | cifs_reconnect(server); |
| 496 | csocket = server->ssocket; |
| 497 | wake_up(&server->response_q); |
| 498 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 499 | } else if (temp != (char) 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 500 | cERROR(1, "Unknown RFC 1002 frame"); |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 501 | cifs_dump_mem(" Received Data: ", buf, length); |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 502 | cifs_reconnect(server); |
| 503 | csocket = server->ssocket; |
| 504 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | /* else we have an SMB response */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 508 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 509 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 510 | cERROR(1, "Invalid size SMB length %d pdu_length %d", |
| 511 | length, pdu_length+4); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 512 | cifs_reconnect(server); |
| 513 | csocket = server->ssocket; |
| 514 | wake_up(&server->response_q); |
| 515 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 516 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 517 | |
| 518 | /* else length ok */ |
| 519 | reconnect = 0; |
| 520 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 521 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 522 | isLargeBuf = true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 523 | memcpy(bigbuf, smallbuf, 4); |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 524 | smb_buffer = (struct smb_hdr *)bigbuf; |
| 525 | buf = bigbuf; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 526 | } |
| 527 | length = 0; |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 528 | iov.iov_base = 4 + buf; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 529 | iov.iov_len = pdu_length; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 530 | for (total_read = 0; total_read < pdu_length; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 531 | total_read += length) { |
| 532 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, |
| 533 | pdu_length - total_read, 0); |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 534 | if (server->tcpStatus == CifsExiting) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 535 | /* then will exit */ |
| 536 | reconnect = 2; |
| 537 | break; |
| 538 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 539 | cifs_reconnect(server); |
| 540 | csocket = server->ssocket; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 541 | /* Reconnect wakes up rspns q */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 542 | /* Now we will reread sock */ |
| 543 | reconnect = 1; |
| 544 | break; |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 545 | } else if (length == -ERESTARTSYS || |
| 546 | length == -EAGAIN || |
| 547 | length == -EINTR) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 548 | msleep(1); /* minimum sleep to prevent looping, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 549 | allowing socket to clear and app |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 550 | threads to set tcpStatus |
| 551 | CifsNeedReconnect if server hung*/ |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 552 | length = 0; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 553 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 554 | } else if (length <= 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 555 | cERROR(1, "Received no data, expecting %d", |
| 556 | pdu_length - total_read); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 557 | cifs_reconnect(server); |
| 558 | csocket = server->ssocket; |
| 559 | reconnect = 1; |
| 560 | break; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 561 | } |
| 562 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 563 | if (reconnect == 2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 564 | break; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 565 | else if (reconnect == 1) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 566 | continue; |
| 567 | |
Jeff Layton | 9587fcf | 2011-02-01 08:40:43 -0500 | [diff] [blame] | 568 | total_read += 4; /* account for rfc1002 hdr */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 569 | |
Jeff Layton | 9587fcf | 2011-02-01 08:40:43 -0500 | [diff] [blame] | 570 | dump_smb(smb_buffer, total_read); |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 571 | |
| 572 | /* |
| 573 | * We know that we received enough to get to the MID as we |
| 574 | * checked the pdu_length earlier. Now check to see |
| 575 | * if the rest of the header is OK. We borrow the length |
| 576 | * var for the rest of the loop to avoid a new stack var. |
| 577 | * |
| 578 | * 48 bytes is enough to display the header and a little bit |
| 579 | * into the payload for debugging purposes. |
| 580 | */ |
| 581 | length = checkSMB(smb_buffer, smb_buffer->Mid, total_read); |
| 582 | if (length != 0) |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 583 | cifs_dump_mem("Bad SMB: ", buf, |
| 584 | min_t(unsigned int, total_read, 48)); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 585 | |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 586 | mid_entry = NULL; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 587 | server->lstrp = jiffies; |
| 588 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 589 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 590 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 591 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 592 | |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 593 | if (mid_entry->mid != smb_buffer->Mid || |
| 594 | mid_entry->midState != MID_REQUEST_SUBMITTED || |
| 595 | mid_entry->command != smb_buffer->Command) { |
| 596 | mid_entry = NULL; |
| 597 | continue; |
| 598 | } |
| 599 | |
| 600 | if (length == 0 && |
| 601 | check2ndT2(smb_buffer, server->maxBuf) > 0) { |
| 602 | /* We have a multipart transact2 resp */ |
| 603 | isMultiRsp = true; |
| 604 | if (mid_entry->resp_buf) { |
| 605 | /* merge response - fix up 1st*/ |
Jeff Layton | 16541ba | 2011-04-29 06:52:44 -0400 | [diff] [blame] | 606 | length = coalesce_t2(smb_buffer, |
| 607 | mid_entry->resp_buf); |
| 608 | if (length > 0) { |
| 609 | length = 0; |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 610 | mid_entry->multiRsp = true; |
| 611 | break; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 612 | } else { |
Jeff Layton | 16541ba | 2011-04-29 06:52:44 -0400 | [diff] [blame] | 613 | /* all parts received or |
| 614 | * packet is malformed |
| 615 | */ |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 616 | mid_entry->multiEnd = true; |
| 617 | goto multi_t2_fnd; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 618 | } |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 619 | } else { |
| 620 | if (!isLargeBuf) { |
| 621 | /* |
| 622 | * FIXME: switch to already |
| 623 | * allocated largebuf? |
| 624 | */ |
| 625 | cERROR(1, "1st trans2 resp " |
| 626 | "needs bigbuf"); |
| 627 | } else { |
| 628 | /* Have first buffer */ |
| 629 | mid_entry->resp_buf = |
| 630 | smb_buffer; |
| 631 | mid_entry->largeBuf = true; |
| 632 | bigbuf = NULL; |
| 633 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 634 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 635 | break; |
| 636 | } |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 637 | mid_entry->resp_buf = smb_buffer; |
| 638 | mid_entry->largeBuf = isLargeBuf; |
| 639 | multi_t2_fnd: |
| 640 | if (length == 0) |
| 641 | mid_entry->midState = MID_RESPONSE_RECEIVED; |
| 642 | else |
| 643 | mid_entry->midState = MID_RESPONSE_MALFORMED; |
| 644 | #ifdef CONFIG_CIFS_STATS2 |
| 645 | mid_entry->when_received = jiffies; |
| 646 | #endif |
| 647 | list_del_init(&mid_entry->qhead); |
Jeff Layton | 146f9f6 | 2011-04-29 06:52:43 -0400 | [diff] [blame] | 648 | break; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 649 | } |
| 650 | spin_unlock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 651 | |
| 652 | if (mid_entry != NULL) { |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 653 | mid_entry->callback(mid_entry); |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 654 | /* Was previous buf put in mpx struct for multi-rsp? */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 655 | if (!isMultiRsp) { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 656 | /* smb buffer will be freed by user thread */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 657 | if (isLargeBuf) |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 658 | bigbuf = NULL; |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 659 | else |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 660 | smallbuf = NULL; |
| 661 | } |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 662 | } else if (length != 0) { |
| 663 | /* response sanity checks failed */ |
| 664 | continue; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 665 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
| 666 | !isMultiRsp) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 667 | cERROR(1, "No task to wake, unknown frame received! " |
Jeff Layton | 8097531 | 2011-01-11 07:24:02 -0500 | [diff] [blame] | 668 | "NumMids %d", atomic_read(&midCount)); |
Pavel Shilovsky | 3d9c247 | 2011-08-01 13:19:40 +0400 | [diff] [blame^] | 669 | cifs_dump_mem("Received Data is: ", buf, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 670 | sizeof(struct smb_hdr)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 671 | #ifdef CONFIG_CIFS_DEBUG2 |
| 672 | cifs_dump_detail(smb_buffer); |
| 673 | cifs_dump_mids(server); |
| 674 | #endif /* CIFS_DEBUG2 */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 675 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 676 | } |
| 677 | } /* end while !EXITING */ |
| 678 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 679 | /* take it off the list, if it's not already */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 680 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 681 | list_del_init(&server->tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 682 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | spin_lock(&GlobalMid_Lock); |
| 685 | server->tcpStatus = CifsExiting; |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 686 | spin_unlock(&GlobalMid_Lock); |
Steve French | dbdbb87 | 2008-06-10 21:21:56 +0000 | [diff] [blame] | 687 | wake_up_all(&server->response_q); |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 688 | |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 689 | /* check if we have blocked requests that need to free */ |
| 690 | /* Note that cifs_max_pending is normally 50, but |
| 691 | can be set at module install time to as little as two */ |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 692 | spin_lock(&GlobalMid_Lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 693 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 694 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
| 695 | /* We do not want to set the max_pending too low or we |
| 696 | could end up with the counter going negative */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | spin_unlock(&GlobalMid_Lock); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 698 | /* Although there should not be any requests blocked on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | this queue it can not hurt to be paranoid and try to wake up requests |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 700 | that may haven been blocked when more than 50 at time were on the wire |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | to the same server - they now will see the session is in exit state |
| 702 | and get out of SendReceive. */ |
| 703 | wake_up_all(&server->request_q); |
| 704 | /* give those requests time to exit */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 705 | msleep(125); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 706 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 707 | if (server->ssocket) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | sock_release(csocket); |
| 709 | server->ssocket = NULL; |
| 710 | } |
Justin P. Mattock | fd62cb7 | 2011-02-24 22:15:02 -0800 | [diff] [blame] | 711 | /* buffer usually freed in free_mid - need to free it here on exit */ |
Mariusz Kozlowski | a8a11d3 | 2007-10-03 16:41:24 +0000 | [diff] [blame] | 712 | cifs_buf_release(bigbuf); |
| 713 | if (smallbuf) /* no sense logging a debug message if NULL */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 714 | cifs_small_buf_release(smallbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | |
Jeff Layton | 9d78315 | 2011-01-11 07:24:01 -0500 | [diff] [blame] | 716 | if (!list_empty(&server->pending_mid_q)) { |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 717 | struct list_head dispose_list; |
| 718 | |
| 719 | INIT_LIST_HEAD(&dispose_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 721 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
Jeff Layton | 9d78315 | 2011-01-11 07:24:01 -0500 | [diff] [blame] | 722 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
Jeff Layton | 3c1105d | 2011-05-22 07:09:13 -0400 | [diff] [blame] | 723 | cFYI(1, "Clearing mid 0x%x", mid_entry->mid); |
| 724 | mid_entry->midState = MID_SHUTDOWN; |
| 725 | list_move(&mid_entry->qhead, &dispose_list); |
| 726 | } |
| 727 | spin_unlock(&GlobalMid_Lock); |
| 728 | |
| 729 | /* now walk dispose list and issue callbacks */ |
| 730 | list_for_each_safe(tmp, tmp2, &dispose_list) { |
| 731 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 732 | cFYI(1, "Callback mid 0x%x", mid_entry->mid); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 733 | list_del_init(&mid_entry->qhead); |
| 734 | mid_entry->callback(mid_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | /* 1/8th of sec is more than enough time for them to exit */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 737 | msleep(125); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | } |
| 739 | |
Steve French | f191401 | 2005-08-18 09:37:34 -0700 | [diff] [blame] | 740 | if (!list_empty(&server->pending_mid_q)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 741 | /* mpx threads have not exited yet give them |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | at least the smb send timeout time for long ops */ |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 743 | /* due to delays on oplock break requests, we need |
| 744 | to wait at least 45 seconds before giving up |
| 745 | on a request getting a response and going ahead |
| 746 | and killing cifsd */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 747 | cFYI(1, "Wait for exit from demultiplex thread"); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 748 | msleep(46000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | /* if threads still have not exited they are probably never |
| 750 | coming home not much else we can do but free the memory */ |
| 751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 753 | kfree(server->hostname); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 754 | task_to_wake = xchg(&server->tsk, NULL); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 755 | kfree(server); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 756 | |
| 757 | length = atomic_dec_return(&tcpSesAllocCount); |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 758 | if (length > 0) |
| 759 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 760 | GFP_KERNEL); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 761 | |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 762 | /* if server->tsk was NULL then wait for a signal before exiting */ |
| 763 | if (!task_to_wake) { |
| 764 | set_current_state(TASK_INTERRUPTIBLE); |
| 765 | while (!signal_pending(current)) { |
| 766 | schedule(); |
| 767 | set_current_state(TASK_INTERRUPTIBLE); |
| 768 | } |
| 769 | set_current_state(TASK_RUNNING); |
| 770 | } |
| 771 | |
Jeff Layton | 0468a2c | 2008-12-01 07:09:35 -0500 | [diff] [blame] | 772 | module_put_and_exit(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | } |
| 774 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 775 | /* extract the host portion of the UNC string */ |
| 776 | static char * |
| 777 | extract_hostname(const char *unc) |
| 778 | { |
| 779 | const char *src; |
| 780 | char *dst, *delim; |
| 781 | unsigned int len; |
| 782 | |
| 783 | /* skip double chars at beginning of string */ |
| 784 | /* BB: check validity of these bytes? */ |
| 785 | src = unc + 2; |
| 786 | |
| 787 | /* delimiter between hostname and sharename is always '\\' now */ |
| 788 | delim = strchr(src, '\\'); |
| 789 | if (!delim) |
| 790 | return ERR_PTR(-EINVAL); |
| 791 | |
| 792 | len = delim - src; |
| 793 | dst = kmalloc((len + 1), GFP_KERNEL); |
| 794 | if (dst == NULL) |
| 795 | return ERR_PTR(-ENOMEM); |
| 796 | |
| 797 | memcpy(dst, src, len); |
| 798 | dst[len] = '\0'; |
| 799 | |
| 800 | return dst; |
| 801 | } |
| 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | static int |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 804 | cifs_parse_mount_options(const char *mountdata, const char *devname, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 805 | struct smb_vol *vol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | { |
Pavel Shilovsky | 4906e50 | 2011-04-14 22:00:56 +0400 | [diff] [blame] | 807 | char *value, *data, *end; |
Vasily Averin | 957df45 | 2011-06-06 11:33:12 +0400 | [diff] [blame] | 808 | char *mountdata_copy = NULL, *options; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | unsigned int temp_len, i, j; |
| 810 | char separator[2]; |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 811 | short int override_uid = -1; |
| 812 | short int override_gid = -1; |
| 813 | bool uid_specified = false; |
| 814 | bool gid_specified = false; |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 815 | char *nodename = utsname()->nodename; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | separator[0] = ','; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 818 | separator[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 820 | /* |
| 821 | * does not have to be perfect mapping since field is |
| 822 | * informational, only used for servers that do not support |
| 823 | * port 445 and it can be overridden at mount time |
| 824 | */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 825 | memset(vol->source_rfc1001_name, 0x20, RFC1001_NAME_LEN); |
| 826 | for (i = 0; i < strnlen(nodename, RFC1001_NAME_LEN); i++) |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 827 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
| 828 | |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 829 | vol->source_rfc1001_name[RFC1001_NAME_LEN] = 0; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 830 | /* null target name indicates to use *SMBSERVR default called name |
| 831 | if we end up sending RFC1001 session initialize */ |
| 832 | vol->target_rfc1001_name[0] = 0; |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 833 | vol->cred_uid = current_uid(); |
| 834 | vol->linux_uid = current_uid(); |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 835 | vol->linux_gid = current_gid(); |
Jeff Layton | f55ed1a | 2009-05-26 16:28:11 -0400 | [diff] [blame] | 836 | |
| 837 | /* default to only allowing write access to owner of the mount */ |
| 838 | vol->dir_mode = vol->file_mode = S_IRUGO | S_IXUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
| 840 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 841 | /* default is always to request posix paths. */ |
| 842 | vol->posix_paths = 1; |
Jeff Layton | a0c9217 | 2009-05-27 15:40:47 -0400 | [diff] [blame] | 843 | /* default to using server inode numbers where available */ |
| 844 | vol->server_ino = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 845 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 846 | vol->actimeo = CIFS_DEF_ACTIMEO; |
| 847 | |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 848 | if (!mountdata) |
| 849 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 851 | mountdata_copy = kstrndup(mountdata, PAGE_SIZE, GFP_KERNEL); |
| 852 | if (!mountdata_copy) |
| 853 | goto cifs_parse_mount_err; |
| 854 | |
| 855 | options = mountdata_copy; |
Pavel Shilovsky | 4906e50 | 2011-04-14 22:00:56 +0400 | [diff] [blame] | 856 | end = options + strlen(options); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 857 | if (strncmp(options, "sep=", 4) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 858 | if (options[4] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | separator[0] = options[4]; |
| 860 | options += 5; |
| 861 | } else { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 862 | cFYI(1, "Null separator not allowed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | } |
| 864 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 865 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | while ((data = strsep(&options, separator)) != NULL) { |
| 867 | if (!*data) |
| 868 | continue; |
| 869 | if ((value = strchr(data, '=')) != NULL) |
| 870 | *value++ = '\0'; |
| 871 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 872 | /* Have to parse this before we parse for "user" */ |
| 873 | if (strnicmp(data, "user_xattr", 10) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | vol->no_xattr = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 875 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | vol->no_xattr = 1; |
| 877 | } else if (strnicmp(data, "user", 4) == 0) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 878 | if (!value) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | printk(KERN_WARNING |
| 880 | "CIFS: invalid or missing username\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 881 | goto cifs_parse_mount_err; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 882 | } else if (!*value) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 883 | /* null user, ie anonymous, authentication */ |
| 884 | vol->nullauth = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | } |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 886 | if (strnlen(value, MAX_USERNAME_SIZE) < |
| 887 | MAX_USERNAME_SIZE) { |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 888 | vol->username = kstrdup(value, GFP_KERNEL); |
| 889 | if (!vol->username) { |
| 890 | printk(KERN_WARNING "CIFS: no memory " |
| 891 | "for username\n"); |
| 892 | goto cifs_parse_mount_err; |
| 893 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | } else { |
| 895 | printk(KERN_WARNING "CIFS: username too long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 896 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | } |
| 898 | } else if (strnicmp(data, "pass", 4) == 0) { |
| 899 | if (!value) { |
| 900 | vol->password = NULL; |
| 901 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 902 | } else if (value[0] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | /* check if string begins with double comma |
| 904 | since that would mean the password really |
| 905 | does start with a comma, and would not |
| 906 | indicate an empty string */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 907 | if (value[1] != separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | vol->password = NULL; |
| 909 | continue; |
| 910 | } |
| 911 | } |
| 912 | temp_len = strlen(value); |
| 913 | /* removed password length check, NTLM passwords |
| 914 | can be arbitrarily long */ |
| 915 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 916 | /* if comma in password, the string will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | prematurely null terminated. Commas in password are |
| 918 | specified across the cifs mount interface by a double |
| 919 | comma ie ,, and a comma used as in other cases ie ',' |
| 920 | as a parameter delimiter/separator is single and due |
| 921 | to the strsep above is temporarily zeroed. */ |
| 922 | |
| 923 | /* NB: password legally can have multiple commas and |
| 924 | the only illegal character in a password is null */ |
| 925 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 926 | if ((value[temp_len] == 0) && |
Pavel Shilovsky | 4906e50 | 2011-04-14 22:00:56 +0400 | [diff] [blame] | 927 | (value + temp_len < end) && |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 928 | (value[temp_len+1] == separator[0])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | /* reinsert comma */ |
| 930 | value[temp_len] = separator[0]; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 931 | temp_len += 2; /* move after second comma */ |
| 932 | while (value[temp_len] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | if (value[temp_len] == separator[0]) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 934 | if (value[temp_len+1] == |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 935 | separator[0]) { |
| 936 | /* skip second comma */ |
| 937 | temp_len++; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 938 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | /* single comma indicating start |
| 940 | of next parm */ |
| 941 | break; |
| 942 | } |
| 943 | } |
| 944 | temp_len++; |
| 945 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 946 | if (value[temp_len] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | options = NULL; |
| 948 | } else { |
| 949 | value[temp_len] = 0; |
| 950 | /* point option to start of next parm */ |
| 951 | options = value + temp_len + 1; |
| 952 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 953 | /* go from value to value + temp_len condensing |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | double commas to singles. Note that this ends up |
| 955 | allocating a few bytes too many, which is ok */ |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 956 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 957 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 958 | printk(KERN_WARNING "CIFS: no memory " |
| 959 | "for password\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 960 | goto cifs_parse_mount_err; |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 961 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 962 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | vol->password[j] = value[i]; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 964 | if (value[i] == separator[0] |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 965 | && value[i+1] == separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | /* skip second comma */ |
| 967 | i++; |
| 968 | } |
| 969 | } |
| 970 | vol->password[j] = 0; |
| 971 | } else { |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 972 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 973 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 974 | printk(KERN_WARNING "CIFS: no memory " |
| 975 | "for password\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 976 | goto cifs_parse_mount_err; |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 977 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | strcpy(vol->password, value); |
| 979 | } |
Jeff Layton | 58f7f68 | 2009-06-10 09:57:55 -0400 | [diff] [blame] | 980 | } else if (!strnicmp(data, "ip", 2) || |
| 981 | !strnicmp(data, "addr", 4)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | if (!value || !*value) { |
| 983 | vol->UNCip = NULL; |
Jeff Layton | 50b64e3 | 2009-06-02 06:55:20 -0400 | [diff] [blame] | 984 | } else if (strnlen(value, INET6_ADDRSTRLEN) < |
| 985 | INET6_ADDRSTRLEN) { |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 986 | vol->UNCip = kstrdup(value, GFP_KERNEL); |
| 987 | if (!vol->UNCip) { |
| 988 | printk(KERN_WARNING "CIFS: no memory " |
| 989 | "for UNC IP\n"); |
| 990 | goto cifs_parse_mount_err; |
| 991 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 993 | printk(KERN_WARNING "CIFS: ip address " |
| 994 | "too long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 995 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 997 | } else if (strnicmp(data, "sec", 3) == 0) { |
| 998 | if (!value || !*value) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 999 | cERROR(1, "no security value specified"); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1000 | continue; |
| 1001 | } else if (strnicmp(value, "krb5i", 5) == 0) { |
| 1002 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1003 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1004 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1005 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
| 1006 | CIFSSEC_MAY_KRB5; */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1007 | cERROR(1, "Krb5 cifs privacy not supported"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1008 | goto cifs_parse_mount_err; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1009 | } else if (strnicmp(value, "krb5", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1010 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 1011 | } else if (strnicmp(value, "ntlmsspi", 8) == 0) { |
| 1012 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP | |
| 1013 | CIFSSEC_MUST_SIGN; |
| 1014 | } else if (strnicmp(value, "ntlmssp", 7) == 0) { |
| 1015 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1016 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1017 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1018 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1019 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1020 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1021 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1022 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1023 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1024 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
| 1025 | /* ntlm is default so can be turned off too */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1026 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1027 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1028 | /* BB is there a better way to do this? */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1029 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1030 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 1031 | } else if (strnicmp(value, "lanman", 6) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1032 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1033 | #endif |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1034 | } else if (strnicmp(value, "none", 4) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1035 | vol->nullauth = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1036 | } else { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1037 | cERROR(1, "bad security option: %s", value); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1038 | goto cifs_parse_mount_err; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1039 | } |
Steve French | 1cb06d0 | 2011-02-24 18:07:19 +0000 | [diff] [blame] | 1040 | } else if (strnicmp(data, "vers", 3) == 0) { |
| 1041 | if (!value || !*value) { |
| 1042 | cERROR(1, "no protocol version specified" |
| 1043 | " after vers= mount option"); |
| 1044 | } else if ((strnicmp(value, "cifs", 4) == 0) || |
| 1045 | (strnicmp(value, "1", 1) == 0)) { |
| 1046 | /* this is the default */ |
| 1047 | continue; |
Steve French | 1cb06d0 | 2011-02-24 18:07:19 +0000 | [diff] [blame] | 1048 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | } else if ((strnicmp(data, "unc", 3) == 0) |
| 1050 | || (strnicmp(data, "target", 6) == 0) |
| 1051 | || (strnicmp(data, "path", 4) == 0)) { |
| 1052 | if (!value || !*value) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1053 | printk(KERN_WARNING "CIFS: invalid path to " |
| 1054 | "network resource\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1055 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | } |
| 1057 | if ((temp_len = strnlen(value, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1058 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1059 | if (vol->UNC == NULL) |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1060 | goto cifs_parse_mount_err; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1061 | strcpy(vol->UNC, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1063 | vol->UNC[0] = '\\'; |
| 1064 | vol->UNC[1] = '\\'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1065 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | printk(KERN_WARNING |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1067 | "CIFS: UNC Path does not begin " |
| 1068 | "with // or \\\\ \n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1069 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | } |
| 1071 | } else { |
| 1072 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1073 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | } |
| 1075 | } else if ((strnicmp(data, "domain", 3) == 0) |
| 1076 | || (strnicmp(data, "workgroup", 5) == 0)) { |
| 1077 | if (!value || !*value) { |
| 1078 | printk(KERN_WARNING "CIFS: invalid domain name\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1079 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | } |
| 1081 | /* BB are there cases in which a comma can be valid in |
| 1082 | a domain name and need special handling? */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1083 | if (strnlen(value, 256) < 256) { |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1084 | vol->domainname = kstrdup(value, GFP_KERNEL); |
| 1085 | if (!vol->domainname) { |
| 1086 | printk(KERN_WARNING "CIFS: no memory " |
| 1087 | "for domainname\n"); |
| 1088 | goto cifs_parse_mount_err; |
| 1089 | } |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1090 | cFYI(1, "Domain name set"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1092 | printk(KERN_WARNING "CIFS: domain name too " |
| 1093 | "long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1094 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1096 | } else if (strnicmp(data, "srcaddr", 7) == 0) { |
| 1097 | vol->srcaddr.ss_family = AF_UNSPEC; |
| 1098 | |
| 1099 | if (!value || !*value) { |
| 1100 | printk(KERN_WARNING "CIFS: srcaddr value" |
| 1101 | " not specified.\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1102 | goto cifs_parse_mount_err; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1103 | } |
| 1104 | i = cifs_convert_address((struct sockaddr *)&vol->srcaddr, |
| 1105 | value, strlen(value)); |
Dan Carpenter | b235f37 | 2010-10-25 07:02:56 +0200 | [diff] [blame] | 1106 | if (i == 0) { |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1107 | printk(KERN_WARNING "CIFS: Could not parse" |
| 1108 | " srcaddr: %s\n", |
| 1109 | value); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1110 | goto cifs_parse_mount_err; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1111 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1112 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
| 1113 | if (!value || !*value) { |
| 1114 | printk(KERN_WARNING |
| 1115 | "CIFS: invalid path prefix\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1116 | goto cifs_parse_mount_err; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1117 | } |
| 1118 | if ((temp_len = strnlen(value, 1024)) < 1024) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1119 | if (value[0] != '/') |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1120 | temp_len++; /* missing leading slash */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1121 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
| 1122 | if (vol->prepath == NULL) |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1123 | goto cifs_parse_mount_err; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1124 | if (value[0] != '/') { |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1125 | vol->prepath[0] = '/'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1126 | strcpy(vol->prepath+1, value); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1127 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1128 | strcpy(vol->prepath, value); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1129 | cFYI(1, "prefix path %s", vol->prepath); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1130 | } else { |
| 1131 | printk(KERN_WARNING "CIFS: prefix too long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1132 | goto cifs_parse_mount_err; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1133 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
| 1135 | if (!value || !*value) { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1136 | printk(KERN_WARNING "CIFS: invalid iocharset " |
| 1137 | "specified\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1138 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | } |
| 1140 | if (strnlen(value, 65) < 65) { |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1141 | if (strnicmp(value, "default", 7)) { |
| 1142 | vol->iocharset = kstrdup(value, |
| 1143 | GFP_KERNEL); |
| 1144 | |
| 1145 | if (!vol->iocharset) { |
| 1146 | printk(KERN_WARNING "CIFS: no " |
| 1147 | "memory for" |
| 1148 | "charset\n"); |
| 1149 | goto cifs_parse_mount_err; |
| 1150 | } |
| 1151 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1152 | /* if iocharset not set then load_nls_default |
| 1153 | is used by caller */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1154 | cFYI(1, "iocharset set to %s", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | } else { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1156 | printk(KERN_WARNING "CIFS: iocharset name " |
| 1157 | "too long.\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1158 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1160 | } else if (!strnicmp(data, "uid", 3) && value && *value) { |
| 1161 | vol->linux_uid = simple_strtoul(value, &value, 0); |
| 1162 | uid_specified = true; |
Jeff Layton | bd76331 | 2011-01-11 10:33:24 -0500 | [diff] [blame] | 1163 | } else if (!strnicmp(data, "cruid", 5) && value && *value) { |
| 1164 | vol->cred_uid = simple_strtoul(value, &value, 0); |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1165 | } else if (!strnicmp(data, "forceuid", 8)) { |
| 1166 | override_uid = 1; |
| 1167 | } else if (!strnicmp(data, "noforceuid", 10)) { |
| 1168 | override_uid = 0; |
| 1169 | } else if (!strnicmp(data, "gid", 3) && value && *value) { |
| 1170 | vol->linux_gid = simple_strtoul(value, &value, 0); |
| 1171 | gid_specified = true; |
| 1172 | } else if (!strnicmp(data, "forcegid", 8)) { |
| 1173 | override_gid = 1; |
| 1174 | } else if (!strnicmp(data, "noforcegid", 10)) { |
| 1175 | override_gid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | } else if (strnicmp(data, "file_mode", 4) == 0) { |
| 1177 | if (value && *value) { |
| 1178 | vol->file_mode = |
| 1179 | simple_strtoul(value, &value, 0); |
| 1180 | } |
| 1181 | } else if (strnicmp(data, "dir_mode", 4) == 0) { |
| 1182 | if (value && *value) { |
| 1183 | vol->dir_mode = |
| 1184 | simple_strtoul(value, &value, 0); |
| 1185 | } |
| 1186 | } else if (strnicmp(data, "dirmode", 4) == 0) { |
| 1187 | if (value && *value) { |
| 1188 | vol->dir_mode = |
| 1189 | simple_strtoul(value, &value, 0); |
| 1190 | } |
| 1191 | } else if (strnicmp(data, "port", 4) == 0) { |
| 1192 | if (value && *value) { |
| 1193 | vol->port = |
| 1194 | simple_strtoul(value, &value, 0); |
| 1195 | } |
| 1196 | } else if (strnicmp(data, "rsize", 5) == 0) { |
| 1197 | if (value && *value) { |
| 1198 | vol->rsize = |
| 1199 | simple_strtoul(value, &value, 0); |
| 1200 | } |
| 1201 | } else if (strnicmp(data, "wsize", 5) == 0) { |
| 1202 | if (value && *value) { |
| 1203 | vol->wsize = |
| 1204 | simple_strtoul(value, &value, 0); |
| 1205 | } |
| 1206 | } else if (strnicmp(data, "sockopt", 5) == 0) { |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1207 | if (!value || !*value) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1208 | cERROR(1, "no socket option specified"); |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1209 | continue; |
| 1210 | } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) { |
| 1211 | vol->sockopt_tcp_nodelay = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | } |
| 1213 | } else if (strnicmp(data, "netbiosname", 4) == 0) { |
| 1214 | if (!value || !*value || (*value == ' ')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1215 | cFYI(1, "invalid (empty) netbiosname"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | } else { |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1217 | memset(vol->source_rfc1001_name, 0x20, |
| 1218 | RFC1001_NAME_LEN); |
| 1219 | /* |
| 1220 | * FIXME: are there cases in which a comma can |
| 1221 | * be valid in workstation netbios name (and |
| 1222 | * need special handling)? |
| 1223 | */ |
| 1224 | for (i = 0; i < RFC1001_NAME_LEN; i++) { |
| 1225 | /* don't ucase netbiosname for user */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1226 | if (value[i] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | break; |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1228 | vol->source_rfc1001_name[i] = value[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | } |
| 1230 | /* The string has 16th byte zero still from |
| 1231 | set at top of the function */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1232 | if (i == RFC1001_NAME_LEN && value[i] != 0) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1233 | printk(KERN_WARNING "CIFS: netbiosname" |
| 1234 | " longer than 15 truncated.\n"); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1235 | } |
| 1236 | } else if (strnicmp(data, "servern", 7) == 0) { |
| 1237 | /* servernetbiosname specified override *SMBSERVER */ |
| 1238 | if (!value || !*value || (*value == ' ')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1239 | cFYI(1, "empty server netbiosname specified"); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1240 | } else { |
| 1241 | /* last byte, type, is 0x20 for servr type */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1242 | memset(vol->target_rfc1001_name, 0x20, |
| 1243 | RFC1001_NAME_LEN_WITH_NULL); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1244 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1245 | for (i = 0; i < 15; i++) { |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1246 | /* BB are there cases in which a comma can be |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1247 | valid in this workstation netbios name |
| 1248 | (and need special handling)? */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1249 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1250 | /* user or mount helper must uppercase |
| 1251 | the netbiosname */ |
| 1252 | if (value[i] == 0) |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1253 | break; |
| 1254 | else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1255 | vol->target_rfc1001_name[i] = |
| 1256 | value[i]; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1257 | } |
| 1258 | /* The string has 16th byte zero still from |
| 1259 | set at top of the function */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1260 | if (i == RFC1001_NAME_LEN && value[i] != 0) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1261 | printk(KERN_WARNING "CIFS: server net" |
| 1262 | "biosname longer than 15 truncated.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | } |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1264 | } else if (strnicmp(data, "actimeo", 7) == 0) { |
| 1265 | if (value && *value) { |
| 1266 | vol->actimeo = HZ * simple_strtoul(value, |
| 1267 | &value, 0); |
| 1268 | if (vol->actimeo > CIFS_MAX_ACTIMEO) { |
| 1269 | cERROR(1, "CIFS: attribute cache" |
| 1270 | "timeout too large"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1271 | goto cifs_parse_mount_err; |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1272 | } |
| 1273 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | } else if (strnicmp(data, "credentials", 4) == 0) { |
| 1275 | /* ignore */ |
| 1276 | } else if (strnicmp(data, "version", 3) == 0) { |
| 1277 | /* ignore */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1278 | } else if (strnicmp(data, "guest", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | /* ignore */ |
Steve French | 71a394f | 2009-06-26 04:07:18 +0000 | [diff] [blame] | 1280 | } else if (strnicmp(data, "rw", 2) == 0) { |
| 1281 | /* ignore */ |
| 1282 | } else if (strnicmp(data, "ro", 2) == 0) { |
| 1283 | /* ignore */ |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1284 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
| 1285 | vol->noblocksnd = 1; |
| 1286 | } else if (strnicmp(data, "noautotune", 10) == 0) { |
| 1287 | vol->noautotune = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | } else if ((strnicmp(data, "suid", 4) == 0) || |
| 1289 | (strnicmp(data, "nosuid", 6) == 0) || |
| 1290 | (strnicmp(data, "exec", 4) == 0) || |
| 1291 | (strnicmp(data, "noexec", 6) == 0) || |
| 1292 | (strnicmp(data, "nodev", 5) == 0) || |
| 1293 | (strnicmp(data, "noauto", 6) == 0) || |
| 1294 | (strnicmp(data, "dev", 3) == 0)) { |
| 1295 | /* The mount tool or mount.cifs helper (if present) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1296 | uses these opts to set flags, and the flags are read |
| 1297 | by the kernel vfs layer before we get here (ie |
| 1298 | before read super) so there is no point trying to |
| 1299 | parse these options again and set anything and it |
| 1300 | is ok to just ignore them */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | } else if (strnicmp(data, "hard", 4) == 0) { |
| 1303 | vol->retry = 1; |
| 1304 | } else if (strnicmp(data, "soft", 4) == 0) { |
| 1305 | vol->retry = 0; |
| 1306 | } else if (strnicmp(data, "perm", 4) == 0) { |
| 1307 | vol->noperm = 0; |
| 1308 | } else if (strnicmp(data, "noperm", 6) == 0) { |
| 1309 | vol->noperm = 1; |
Steve French | 6a0b482 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 1310 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
| 1311 | vol->remap = 1; |
| 1312 | } else if (strnicmp(data, "nomapchars", 10) == 0) { |
| 1313 | vol->remap = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1314 | } else if (strnicmp(data, "sfu", 3) == 0) { |
| 1315 | vol->sfu_emul = 1; |
| 1316 | } else if (strnicmp(data, "nosfu", 5) == 0) { |
| 1317 | vol->sfu_emul = 0; |
Steve French | 2c1b861 | 2008-10-16 18:35:21 +0000 | [diff] [blame] | 1318 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
| 1319 | vol->nodfs = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 1320 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
| 1321 | vol->posix_paths = 1; |
| 1322 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { |
| 1323 | vol->posix_paths = 0; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1324 | } else if (strnicmp(data, "nounix", 6) == 0) { |
| 1325 | vol->no_linux_ext = 1; |
| 1326 | } else if (strnicmp(data, "nolinux", 7) == 0) { |
| 1327 | vol->no_linux_ext = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1328 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1329 | (strnicmp(data, "ignorecase", 10) == 0)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1330 | vol->nocase = 1; |
Jeff Layton | f636a34 | 2010-07-26 10:29:58 -0400 | [diff] [blame] | 1331 | } else if (strnicmp(data, "mand", 4) == 0) { |
| 1332 | /* ignore */ |
| 1333 | } else if (strnicmp(data, "nomand", 6) == 0) { |
| 1334 | /* ignore */ |
| 1335 | } else if (strnicmp(data, "_netdev", 7) == 0) { |
| 1336 | /* ignore */ |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1337 | } else if (strnicmp(data, "brl", 3) == 0) { |
| 1338 | vol->nobrl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1339 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
Steve French | 1c95518 | 2005-08-30 20:58:07 -0700 | [diff] [blame] | 1340 | (strnicmp(data, "nolock", 6) == 0)) { |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1341 | vol->nobrl = 1; |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1342 | /* turn off mandatory locking in mode |
| 1343 | if remote locking is turned off since the |
| 1344 | local vfs will do advisory */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1345 | if (vol->file_mode == |
| 1346 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1347 | vol->file_mode = S_IALLUGO; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 1348 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
| 1349 | /* will take the shorter form "forcemand" as well */ |
| 1350 | /* This mount option will force use of mandatory |
| 1351 | (DOS/Windows style) byte range locks, instead of |
| 1352 | using posix advisory byte range locks, even if the |
| 1353 | Unix extensions are available and posix locks would |
| 1354 | be supported otherwise. If Unix extensions are not |
| 1355 | negotiated this has no effect since mandatory locks |
| 1356 | would be used (mandatory locks is all that those |
| 1357 | those servers support) */ |
| 1358 | vol->mand_lock = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | } else if (strnicmp(data, "setuids", 7) == 0) { |
| 1360 | vol->setuids = 1; |
| 1361 | } else if (strnicmp(data, "nosetuids", 9) == 0) { |
| 1362 | vol->setuids = 0; |
Jeff Layton | d0a9c07 | 2008-05-12 22:23:49 +0000 | [diff] [blame] | 1363 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
| 1364 | vol->dynperm = true; |
| 1365 | } else if (strnicmp(data, "nodynperm", 9) == 0) { |
| 1366 | vol->dynperm = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | } else if (strnicmp(data, "nohard", 6) == 0) { |
| 1368 | vol->retry = 0; |
| 1369 | } else if (strnicmp(data, "nosoft", 6) == 0) { |
| 1370 | vol->retry = 1; |
| 1371 | } else if (strnicmp(data, "nointr", 6) == 0) { |
| 1372 | vol->intr = 0; |
| 1373 | } else if (strnicmp(data, "intr", 4) == 0) { |
| 1374 | vol->intr = 1; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 1375 | } else if (strnicmp(data, "nostrictsync", 12) == 0) { |
| 1376 | vol->nostrictsync = 1; |
| 1377 | } else if (strnicmp(data, "strictsync", 10) == 0) { |
| 1378 | vol->nostrictsync = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1379 | } else if (strnicmp(data, "serverino", 7) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | vol->server_ino = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1381 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | vol->server_ino = 0; |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 1383 | } else if (strnicmp(data, "rwpidforward", 4) == 0) { |
| 1384 | vol->rwpidforward = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1385 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 1386 | vol->cifs_acl = 1; |
| 1387 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { |
| 1388 | vol->cifs_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1389 | } else if (strnicmp(data, "acl", 3) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | vol->no_psx_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1391 | } else if (strnicmp(data, "noacl", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | vol->no_psx_acl = 1; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1393 | } else if (strnicmp(data, "locallease", 6) == 0) { |
| 1394 | vol->local_lease = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1395 | } else if (strnicmp(data, "sign", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1396 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 1397 | } else if (strnicmp(data, "seal", 4) == 0) { |
| 1398 | /* we do not do the following in secFlags because seal |
| 1399 | is a per tree connection (mount) not a per socket |
| 1400 | or per-smb connection option in the protocol */ |
| 1401 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ |
| 1402 | vol->seal = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1403 | } else if (strnicmp(data, "direct", 6) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | vol->direct_io = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1405 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | vol->direct_io = 1; |
Pavel Shilovsky | d39454f | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 1407 | } else if (strnicmp(data, "strictcache", 11) == 0) { |
| 1408 | vol->strict_io = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | } else if (strnicmp(data, "noac", 4) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1410 | printk(KERN_WARNING "CIFS: Mount option noac not " |
| 1411 | "supported. Instead set " |
| 1412 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 1413 | } else if (strnicmp(data, "fsc", 3) == 0) { |
Suresh Jayaraman | 607a569 | 2010-11-24 17:49:05 +0530 | [diff] [blame] | 1414 | #ifndef CONFIG_CIFS_FSCACHE |
Jeff Layton | 83fb086 | 2011-06-08 07:35:24 -0400 | [diff] [blame] | 1415 | cERROR(1, "FS-Cache support needs CONFIG_CIFS_FSCACHE " |
Suresh Jayaraman | 607a569 | 2010-11-24 17:49:05 +0530 | [diff] [blame] | 1416 | "kernel config option set"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1417 | goto cifs_parse_mount_err; |
Suresh Jayaraman | 607a569 | 2010-11-24 17:49:05 +0530 | [diff] [blame] | 1418 | #endif |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 1419 | vol->fsc = true; |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 1420 | } else if (strnicmp(data, "mfsymlinks", 10) == 0) { |
| 1421 | vol->mfsymlinks = true; |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 1422 | } else if (strnicmp(data, "multiuser", 8) == 0) { |
| 1423 | vol->multiuser = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1425 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
| 1426 | data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | } |
| 1428 | if (vol->UNC == NULL) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1429 | if (devname == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1430 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
| 1431 | "target\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1432 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | } |
| 1434 | if ((temp_len = strnlen(devname, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1435 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1436 | if (vol->UNC == NULL) |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1437 | goto cifs_parse_mount_err; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1438 | strcpy(vol->UNC, devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1440 | vol->UNC[0] = '\\'; |
| 1441 | vol->UNC[1] = '\\'; |
| 1442 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1443 | printk(KERN_WARNING "CIFS: UNC Path does not " |
| 1444 | "begin with // or \\\\ \n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1445 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | } |
Igor Mammedov | 7c5e628 | 2008-05-08 20:48:42 +0000 | [diff] [blame] | 1447 | value = strpbrk(vol->UNC+2, "/\\"); |
| 1448 | if (value) |
| 1449 | *value = '\\'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | } else { |
| 1451 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1452 | goto cifs_parse_mount_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | } |
| 1454 | } |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 1455 | |
| 1456 | if (vol->multiuser && !(vol->secFlg & CIFSSEC_MAY_KRB5)) { |
| 1457 | cERROR(1, "Multiuser mounts currently require krb5 " |
| 1458 | "authentication!"); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1459 | goto cifs_parse_mount_err; |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 1460 | } |
| 1461 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1462 | if (vol->UNCip == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | vol->UNCip = &vol->UNC[2]; |
| 1464 | |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1465 | if (uid_specified) |
| 1466 | vol->override_uid = override_uid; |
| 1467 | else if (override_uid == 1) |
| 1468 | printk(KERN_NOTICE "CIFS: ignoring forceuid mount option " |
| 1469 | "specified with no uid= option.\n"); |
| 1470 | |
| 1471 | if (gid_specified) |
| 1472 | vol->override_gid = override_gid; |
| 1473 | else if (override_gid == 1) |
| 1474 | printk(KERN_NOTICE "CIFS: ignoring forcegid mount option " |
| 1475 | "specified with no gid= option.\n"); |
| 1476 | |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1477 | kfree(mountdata_copy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | return 0; |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 1479 | |
| 1480 | cifs_parse_mount_err: |
| 1481 | kfree(mountdata_copy); |
| 1482 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | } |
| 1484 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1485 | /** Returns true if srcaddr isn't specified and rhs isn't |
| 1486 | * specified, or if srcaddr is specified and |
| 1487 | * matches the IP address of the rhs argument. |
| 1488 | */ |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1489 | static bool |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1490 | srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) |
| 1491 | { |
| 1492 | switch (srcaddr->sa_family) { |
| 1493 | case AF_UNSPEC: |
| 1494 | return (rhs->sa_family == AF_UNSPEC); |
| 1495 | case AF_INET: { |
| 1496 | struct sockaddr_in *saddr4 = (struct sockaddr_in *)srcaddr; |
| 1497 | struct sockaddr_in *vaddr4 = (struct sockaddr_in *)rhs; |
| 1498 | return (saddr4->sin_addr.s_addr == vaddr4->sin_addr.s_addr); |
| 1499 | } |
| 1500 | case AF_INET6: { |
| 1501 | struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr; |
| 1502 | struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)&rhs; |
| 1503 | return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr); |
| 1504 | } |
| 1505 | default: |
| 1506 | WARN_ON(1); |
| 1507 | return false; /* don't expect to be here */ |
| 1508 | } |
| 1509 | } |
| 1510 | |
Pavel Shilovsky | 4b88613 | 2010-12-13 22:18:07 +0300 | [diff] [blame] | 1511 | /* |
| 1512 | * If no port is specified in addr structure, we try to match with 445 port |
| 1513 | * and if it fails - with 139 ports. It should be called only if address |
| 1514 | * families of server and addr are equal. |
| 1515 | */ |
| 1516 | static bool |
| 1517 | match_port(struct TCP_Server_Info *server, struct sockaddr *addr) |
| 1518 | { |
Steve French | 6da9791 | 2011-03-13 18:55:55 +0000 | [diff] [blame] | 1519 | __be16 port, *sport; |
Pavel Shilovsky | 4b88613 | 2010-12-13 22:18:07 +0300 | [diff] [blame] | 1520 | |
| 1521 | switch (addr->sa_family) { |
| 1522 | case AF_INET: |
| 1523 | sport = &((struct sockaddr_in *) &server->dstaddr)->sin_port; |
| 1524 | port = ((struct sockaddr_in *) addr)->sin_port; |
| 1525 | break; |
| 1526 | case AF_INET6: |
| 1527 | sport = &((struct sockaddr_in6 *) &server->dstaddr)->sin6_port; |
| 1528 | port = ((struct sockaddr_in6 *) addr)->sin6_port; |
| 1529 | break; |
| 1530 | default: |
| 1531 | WARN_ON(1); |
| 1532 | return false; |
| 1533 | } |
| 1534 | |
| 1535 | if (!port) { |
| 1536 | port = htons(CIFS_PORT); |
| 1537 | if (port == *sport) |
| 1538 | return true; |
| 1539 | |
| 1540 | port = htons(RFC1001_PORT); |
| 1541 | } |
| 1542 | |
| 1543 | return port == *sport; |
| 1544 | } |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1545 | |
| 1546 | static bool |
| 1547 | match_address(struct TCP_Server_Info *server, struct sockaddr *addr, |
| 1548 | struct sockaddr *srcaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | { |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1550 | switch (addr->sa_family) { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1551 | case AF_INET: { |
| 1552 | struct sockaddr_in *addr4 = (struct sockaddr_in *)addr; |
| 1553 | struct sockaddr_in *srv_addr4 = |
| 1554 | (struct sockaddr_in *)&server->dstaddr; |
| 1555 | |
| 1556 | if (addr4->sin_addr.s_addr != srv_addr4->sin_addr.s_addr) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1557 | return false; |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1558 | break; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1559 | } |
| 1560 | case AF_INET6: { |
| 1561 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr; |
| 1562 | struct sockaddr_in6 *srv_addr6 = |
| 1563 | (struct sockaddr_in6 *)&server->dstaddr; |
| 1564 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1565 | if (!ipv6_addr_equal(&addr6->sin6_addr, |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1566 | &srv_addr6->sin6_addr)) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1567 | return false; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1568 | if (addr6->sin6_scope_id != srv_addr6->sin6_scope_id) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1569 | return false; |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1570 | break; |
| 1571 | } |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1572 | default: |
| 1573 | WARN_ON(1); |
| 1574 | return false; /* don't expect to be here */ |
| 1575 | } |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1576 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1577 | if (!srcip_matches(srcaddr, (struct sockaddr *)&server->srcaddr)) |
| 1578 | return false; |
| 1579 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1580 | return true; |
| 1581 | } |
| 1582 | |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1583 | static bool |
| 1584 | match_security(struct TCP_Server_Info *server, struct smb_vol *vol) |
| 1585 | { |
| 1586 | unsigned int secFlags; |
| 1587 | |
| 1588 | if (vol->secFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
| 1589 | secFlags = vol->secFlg; |
| 1590 | else |
| 1591 | secFlags = global_secflags | vol->secFlg; |
| 1592 | |
| 1593 | switch (server->secType) { |
| 1594 | case LANMAN: |
| 1595 | if (!(secFlags & (CIFSSEC_MAY_LANMAN|CIFSSEC_MAY_PLNTXT))) |
| 1596 | return false; |
| 1597 | break; |
| 1598 | case NTLMv2: |
| 1599 | if (!(secFlags & CIFSSEC_MAY_NTLMV2)) |
| 1600 | return false; |
| 1601 | break; |
| 1602 | case NTLM: |
| 1603 | if (!(secFlags & CIFSSEC_MAY_NTLM)) |
| 1604 | return false; |
| 1605 | break; |
| 1606 | case Kerberos: |
| 1607 | if (!(secFlags & CIFSSEC_MAY_KRB5)) |
| 1608 | return false; |
| 1609 | break; |
| 1610 | case RawNTLMSSP: |
| 1611 | if (!(secFlags & CIFSSEC_MAY_NTLMSSP)) |
| 1612 | return false; |
| 1613 | break; |
| 1614 | default: |
| 1615 | /* shouldn't happen */ |
| 1616 | return false; |
| 1617 | } |
| 1618 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1619 | /* now check if signing mode is acceptable */ |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1620 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0 && |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1621 | (server->sec_mode & SECMODE_SIGN_REQUIRED)) |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1622 | return false; |
| 1623 | else if (((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) && |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1624 | (server->sec_mode & |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1625 | (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)) == 0) |
| 1626 | return false; |
| 1627 | |
| 1628 | return true; |
| 1629 | } |
| 1630 | |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 1631 | static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr, |
| 1632 | struct smb_vol *vol) |
| 1633 | { |
| 1634 | if (!net_eq(cifs_net_ns(server), current->nsproxy->net_ns)) |
| 1635 | return 0; |
| 1636 | |
| 1637 | if (!match_address(server, addr, |
| 1638 | (struct sockaddr *)&vol->srcaddr)) |
| 1639 | return 0; |
| 1640 | |
| 1641 | if (!match_port(server, addr)) |
| 1642 | return 0; |
| 1643 | |
| 1644 | if (!match_security(server, vol)) |
| 1645 | return 0; |
| 1646 | |
| 1647 | return 1; |
| 1648 | } |
| 1649 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1650 | static struct TCP_Server_Info * |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1651 | cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1652 | { |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1653 | struct TCP_Server_Info *server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1655 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1656 | list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 1657 | if (!match_server(server, addr, vol)) |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1658 | continue; |
| 1659 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1660 | ++server->srv_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1661 | spin_unlock(&cifs_tcp_ses_lock); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1662 | cFYI(1, "Existing tcp session with server found"); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1663 | return server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1665 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | return NULL; |
| 1667 | } |
| 1668 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1669 | static void |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1670 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | { |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1672 | struct task_struct *task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1674 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1675 | if (--server->srv_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1676 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1677 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | } |
Steve French | dea570e0 | 2008-05-06 22:05:51 +0000 | [diff] [blame] | 1679 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1680 | put_net(cifs_net_ns(server)); |
| 1681 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1682 | list_del_init(&server->tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1683 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1684 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1685 | cancel_delayed_work_sync(&server->echo); |
| 1686 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1687 | spin_lock(&GlobalMid_Lock); |
| 1688 | server->tcpStatus = CifsExiting; |
| 1689 | spin_unlock(&GlobalMid_Lock); |
| 1690 | |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1691 | cifs_crypto_shash_release(server); |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 1692 | cifs_fscache_release_client_cookie(server); |
| 1693 | |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 1694 | kfree(server->session_key.response); |
| 1695 | server->session_key.response = NULL; |
| 1696 | server->session_key.len = 0; |
| 1697 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1698 | task = xchg(&server->tsk, NULL); |
| 1699 | if (task) |
| 1700 | force_sig(SIGKILL, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | } |
| 1702 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1703 | static struct TCP_Server_Info * |
| 1704 | cifs_get_tcp_session(struct smb_vol *volume_info) |
| 1705 | { |
| 1706 | struct TCP_Server_Info *tcp_ses = NULL; |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1707 | struct sockaddr_storage addr; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1708 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
| 1709 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; |
| 1710 | int rc; |
| 1711 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1712 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1713 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1714 | cFYI(1, "UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip); |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1715 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1716 | if (volume_info->UNCip && volume_info->UNC) { |
Jeff Layton | 50d9716 | 2010-07-06 20:43:01 -0400 | [diff] [blame] | 1717 | rc = cifs_fill_sockaddr((struct sockaddr *)&addr, |
| 1718 | volume_info->UNCip, |
David Howells | 67b7626 | 2010-07-22 18:33:01 +0100 | [diff] [blame] | 1719 | strlen(volume_info->UNCip), |
Jeff Layton | 50d9716 | 2010-07-06 20:43:01 -0400 | [diff] [blame] | 1720 | volume_info->port); |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1721 | if (!rc) { |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1722 | /* we failed translating address */ |
| 1723 | rc = -EINVAL; |
| 1724 | goto out_err; |
| 1725 | } |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1726 | } else if (volume_info->UNCip) { |
| 1727 | /* BB using ip addr as tcp_ses name to connect to the |
| 1728 | DFS root below */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1729 | cERROR(1, "Connecting to DFS root not implemented yet"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1730 | rc = -EINVAL; |
| 1731 | goto out_err; |
| 1732 | } else /* which tcp_sess DFS root would we conect to */ { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1733 | cERROR(1, "CIFS mount error: No UNC path (e.g. -o " |
| 1734 | "unc=//192.168.1.100/public) specified"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1735 | rc = -EINVAL; |
| 1736 | goto out_err; |
| 1737 | } |
| 1738 | |
| 1739 | /* see if we already have a matching tcp_ses */ |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1740 | tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr, volume_info); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1741 | if (tcp_ses) |
| 1742 | return tcp_ses; |
| 1743 | |
| 1744 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
| 1745 | if (!tcp_ses) { |
| 1746 | rc = -ENOMEM; |
| 1747 | goto out_err; |
| 1748 | } |
| 1749 | |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1750 | rc = cifs_crypto_shash_allocate(tcp_ses); |
| 1751 | if (rc) { |
| 1752 | cERROR(1, "could not setup hash structures rc %d", rc); |
| 1753 | goto out_err; |
| 1754 | } |
| 1755 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1756 | cifs_set_net_ns(tcp_ses, get_net(current->nsproxy->net_ns)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1757 | tcp_ses->hostname = extract_hostname(volume_info->UNC); |
| 1758 | if (IS_ERR(tcp_ses->hostname)) { |
| 1759 | rc = PTR_ERR(tcp_ses->hostname); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1760 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | tcp_ses->noblocksnd = volume_info->noblocksnd; |
| 1764 | tcp_ses->noautotune = volume_info->noautotune; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1765 | tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1766 | atomic_set(&tcp_ses->inFlight, 0); |
| 1767 | init_waitqueue_head(&tcp_ses->response_q); |
| 1768 | init_waitqueue_head(&tcp_ses->request_q); |
| 1769 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); |
| 1770 | mutex_init(&tcp_ses->srv_mutex); |
| 1771 | memcpy(tcp_ses->workstation_RFC1001_name, |
| 1772 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
| 1773 | memcpy(tcp_ses->server_RFC1001_name, |
| 1774 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 1775 | tcp_ses->session_estab = false; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1776 | tcp_ses->sequence_number = 0; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 1777 | tcp_ses->lstrp = jiffies; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1778 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); |
| 1779 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1780 | INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1781 | |
| 1782 | /* |
| 1783 | * at this point we are the only ones with the pointer |
| 1784 | * to the struct since the kernel thread not created yet |
| 1785 | * no need to spinlock this init of tcpStatus or srv_count |
| 1786 | */ |
| 1787 | tcp_ses->tcpStatus = CifsNew; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1788 | memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr, |
| 1789 | sizeof(tcp_ses->srcaddr)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1790 | ++tcp_ses->srv_count; |
| 1791 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1792 | if (addr.ss_family == AF_INET6) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1793 | cFYI(1, "attempting ipv6 connect"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1794 | /* BB should we allow ipv6 on port 139? */ |
| 1795 | /* other OS never observed in Wild doing 139 with v6 */ |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1796 | memcpy(&tcp_ses->dstaddr, sin_server6, |
| 1797 | sizeof(struct sockaddr_in6)); |
| 1798 | } else |
| 1799 | memcpy(&tcp_ses->dstaddr, sin_server, |
| 1800 | sizeof(struct sockaddr_in)); |
| 1801 | |
| 1802 | rc = ip_connect(tcp_ses); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1803 | if (rc < 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1804 | cERROR(1, "Error connecting to socket. Aborting operation"); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1805 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1806 | } |
| 1807 | |
| 1808 | /* |
| 1809 | * since we're in a cifs function already, we know that |
| 1810 | * this will succeed. No need for try_module_get(). |
| 1811 | */ |
| 1812 | __module_get(THIS_MODULE); |
Al Viro | 7c97c20 | 2011-06-21 08:51:28 -0400 | [diff] [blame] | 1813 | tcp_ses->tsk = kthread_run(cifs_demultiplex_thread, |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1814 | tcp_ses, "cifsd"); |
| 1815 | if (IS_ERR(tcp_ses->tsk)) { |
| 1816 | rc = PTR_ERR(tcp_ses->tsk); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1817 | cERROR(1, "error %d create cifsd thread", rc); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1818 | module_put(THIS_MODULE); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1819 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1820 | } |
Steve French | fd88ce9 | 2011-04-12 01:01:14 +0000 | [diff] [blame] | 1821 | tcp_ses->tcpStatus = CifsNeedNegotiate; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1822 | |
| 1823 | /* thread spawned, put it on the list */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1824 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1825 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1826 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1827 | |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 1828 | cifs_fscache_get_client_cookie(tcp_ses); |
| 1829 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1830 | /* queue echo request delayed work */ |
| 1831 | queue_delayed_work(system_nrt_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL); |
| 1832 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1833 | return tcp_ses; |
| 1834 | |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1835 | out_err_crypto_release: |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1836 | cifs_crypto_shash_release(tcp_ses); |
| 1837 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1838 | put_net(cifs_net_ns(tcp_ses)); |
| 1839 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1840 | out_err: |
| 1841 | if (tcp_ses) { |
Steve French | 8347a5c | 2009-10-06 18:31:29 +0000 | [diff] [blame] | 1842 | if (!IS_ERR(tcp_ses->hostname)) |
| 1843 | kfree(tcp_ses->hostname); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1844 | if (tcp_ses->ssocket) |
| 1845 | sock_release(tcp_ses->ssocket); |
| 1846 | kfree(tcp_ses); |
| 1847 | } |
| 1848 | return ERR_PTR(rc); |
| 1849 | } |
| 1850 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1851 | static int match_session(struct cifs_ses *ses, struct smb_vol *vol) |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 1852 | { |
| 1853 | switch (ses->server->secType) { |
| 1854 | case Kerberos: |
| 1855 | if (vol->cred_uid != ses->cred_uid) |
| 1856 | return 0; |
| 1857 | break; |
| 1858 | default: |
| 1859 | /* anything else takes username/password */ |
| 1860 | if (ses->user_name == NULL) |
| 1861 | return 0; |
| 1862 | if (strncmp(ses->user_name, vol->username, |
| 1863 | MAX_USERNAME_SIZE)) |
| 1864 | return 0; |
| 1865 | if (strlen(vol->username) != 0 && |
| 1866 | ses->password != NULL && |
| 1867 | strncmp(ses->password, |
| 1868 | vol->password ? vol->password : "", |
| 1869 | MAX_PASSWORD_SIZE)) |
| 1870 | return 0; |
| 1871 | } |
| 1872 | return 1; |
| 1873 | } |
| 1874 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1875 | static struct cifs_ses * |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1876 | cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1878 | struct cifs_ses *ses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1880 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1881 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 1882 | if (!match_session(ses, vol)) |
| 1883 | continue; |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1884 | ++ses->ses_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1885 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1886 | return ses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1888 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | return NULL; |
| 1890 | } |
| 1891 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1892 | static void |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1893 | cifs_put_smb_ses(struct cifs_ses *ses) |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1894 | { |
| 1895 | int xid; |
| 1896 | struct TCP_Server_Info *server = ses->server; |
| 1897 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1898 | cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1899 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1900 | if (--ses->ses_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1901 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1902 | return; |
| 1903 | } |
| 1904 | |
| 1905 | list_del_init(&ses->smb_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1906 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1907 | |
| 1908 | if (ses->status == CifsGood) { |
| 1909 | xid = GetXid(); |
| 1910 | CIFSSMBLogoff(xid, ses); |
| 1911 | _FreeXid(xid); |
| 1912 | } |
| 1913 | sesInfoFree(ses); |
| 1914 | cifs_put_tcp_session(server); |
| 1915 | } |
| 1916 | |
Steve French | d9b9420 | 2011-04-12 01:24:57 +0000 | [diff] [blame] | 1917 | static bool warned_on_ntlm; /* globals init to false automatically */ |
| 1918 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1919 | static struct cifs_ses * |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1920 | cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) |
| 1921 | { |
| 1922 | int rc = -ENOMEM, xid; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1923 | struct cifs_ses *ses; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1924 | struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; |
| 1925 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1926 | |
| 1927 | xid = GetXid(); |
| 1928 | |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1929 | ses = cifs_find_smb_ses(server, volume_info); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1930 | if (ses) { |
| 1931 | cFYI(1, "Existing smb sess found (status=%d)", ses->status); |
| 1932 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1933 | mutex_lock(&ses->session_mutex); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 1934 | rc = cifs_negotiate_protocol(xid, ses); |
| 1935 | if (rc) { |
| 1936 | mutex_unlock(&ses->session_mutex); |
| 1937 | /* problem -- put our ses reference */ |
| 1938 | cifs_put_smb_ses(ses); |
| 1939 | FreeXid(xid); |
| 1940 | return ERR_PTR(rc); |
| 1941 | } |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1942 | if (ses->need_reconnect) { |
| 1943 | cFYI(1, "Session needs reconnect"); |
| 1944 | rc = cifs_setup_session(xid, ses, |
| 1945 | volume_info->local_nls); |
| 1946 | if (rc) { |
| 1947 | mutex_unlock(&ses->session_mutex); |
| 1948 | /* problem -- put our reference */ |
| 1949 | cifs_put_smb_ses(ses); |
| 1950 | FreeXid(xid); |
| 1951 | return ERR_PTR(rc); |
| 1952 | } |
| 1953 | } |
| 1954 | mutex_unlock(&ses->session_mutex); |
Jeff Layton | 460cf34 | 2010-09-14 11:38:24 -0400 | [diff] [blame] | 1955 | |
| 1956 | /* existing SMB ses has a server reference already */ |
| 1957 | cifs_put_tcp_session(server); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1958 | FreeXid(xid); |
| 1959 | return ses; |
| 1960 | } |
| 1961 | |
| 1962 | cFYI(1, "Existing smb sess not found"); |
| 1963 | ses = sesInfoAlloc(); |
| 1964 | if (ses == NULL) |
| 1965 | goto get_ses_fail; |
| 1966 | |
| 1967 | /* new SMB session uses our server ref */ |
| 1968 | ses->server = server; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1969 | if (server->dstaddr.ss_family == AF_INET6) |
| 1970 | sprintf(ses->serverName, "%pI6", &addr6->sin6_addr); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1971 | else |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1972 | sprintf(ses->serverName, "%pI4", &addr->sin_addr); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1973 | |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 1974 | if (volume_info->username) { |
| 1975 | ses->user_name = kstrdup(volume_info->username, GFP_KERNEL); |
| 1976 | if (!ses->user_name) |
| 1977 | goto get_ses_fail; |
| 1978 | } |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1979 | |
| 1980 | /* volume_info->password freed at unmount */ |
| 1981 | if (volume_info->password) { |
| 1982 | ses->password = kstrdup(volume_info->password, GFP_KERNEL); |
| 1983 | if (!ses->password) |
| 1984 | goto get_ses_fail; |
| 1985 | } |
| 1986 | if (volume_info->domainname) { |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 1987 | ses->domainName = kstrdup(volume_info->domainname, GFP_KERNEL); |
| 1988 | if (!ses->domainName) |
| 1989 | goto get_ses_fail; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1990 | } |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 1991 | ses->cred_uid = volume_info->cred_uid; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1992 | ses->linux_uid = volume_info->linux_uid; |
Steve French | d9b9420 | 2011-04-12 01:24:57 +0000 | [diff] [blame] | 1993 | |
| 1994 | /* ntlmv2 is much stronger than ntlm security, and has been broadly |
| 1995 | supported for many years, time to update default security mechanism */ |
| 1996 | if ((volume_info->secFlg == 0) && warned_on_ntlm == false) { |
| 1997 | warned_on_ntlm = true; |
| 1998 | cERROR(1, "default security mechanism requested. The default " |
| 1999 | "security mechanism will be upgraded from ntlm to " |
Suresh Jayaraman | c592a70 | 2011-06-03 12:06:19 +0530 | [diff] [blame] | 2000 | "ntlmv2 in kernel release 3.1"); |
Steve French | d9b9420 | 2011-04-12 01:24:57 +0000 | [diff] [blame] | 2001 | } |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2002 | ses->overrideSecFlg = volume_info->secFlg; |
| 2003 | |
| 2004 | mutex_lock(&ses->session_mutex); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 2005 | rc = cifs_negotiate_protocol(xid, ses); |
| 2006 | if (!rc) |
| 2007 | rc = cifs_setup_session(xid, ses, volume_info->local_nls); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2008 | mutex_unlock(&ses->session_mutex); |
Steve French | c8e56f1 | 2010-09-08 21:10:58 +0000 | [diff] [blame] | 2009 | if (rc) |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2010 | goto get_ses_fail; |
| 2011 | |
| 2012 | /* success, put it on the list */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2013 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2014 | list_add(&ses->smb_ses_list, &server->smb_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2015 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2016 | |
| 2017 | FreeXid(xid); |
| 2018 | return ses; |
| 2019 | |
| 2020 | get_ses_fail: |
| 2021 | sesInfoFree(ses); |
| 2022 | FreeXid(xid); |
| 2023 | return ERR_PTR(rc); |
| 2024 | } |
| 2025 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2026 | static int match_tcon(struct cifs_tcon *tcon, const char *unc) |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 2027 | { |
| 2028 | if (tcon->tidStatus == CifsExiting) |
| 2029 | return 0; |
| 2030 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) |
| 2031 | return 0; |
| 2032 | return 1; |
| 2033 | } |
| 2034 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2035 | static struct cifs_tcon * |
| 2036 | cifs_find_tcon(struct cifs_ses *ses, const char *unc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | { |
| 2038 | struct list_head *tmp; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2039 | struct cifs_tcon *tcon; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2041 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2042 | list_for_each(tmp, &ses->tcon_list) { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2043 | tcon = list_entry(tmp, struct cifs_tcon, tcon_list); |
Pavel Shilovsky | 37bb04e | 2011-05-05 09:55:11 +0000 | [diff] [blame] | 2044 | if (!match_tcon(tcon, unc)) |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2045 | continue; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2046 | ++tcon->tc_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2047 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | return tcon; |
| 2049 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2050 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | return NULL; |
| 2052 | } |
| 2053 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2054 | static void |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2055 | cifs_put_tcon(struct cifs_tcon *tcon) |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2056 | { |
| 2057 | int xid; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2058 | struct cifs_ses *ses = tcon->ses; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2059 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2060 | cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2061 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2062 | if (--tcon->tc_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2063 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2064 | return; |
| 2065 | } |
| 2066 | |
| 2067 | list_del_init(&tcon->tcon_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2068 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2069 | |
| 2070 | xid = GetXid(); |
| 2071 | CIFSSMBTDis(xid, tcon); |
| 2072 | _FreeXid(xid); |
| 2073 | |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 2074 | cifs_fscache_release_super_cookie(tcon); |
Steve French | 9f84159 | 2010-07-23 20:37:53 +0000 | [diff] [blame] | 2075 | tconInfoFree(tcon); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2076 | cifs_put_smb_ses(ses); |
| 2077 | } |
| 2078 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2079 | static struct cifs_tcon * |
| 2080 | cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2081 | { |
| 2082 | int rc, xid; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2083 | struct cifs_tcon *tcon; |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2084 | |
| 2085 | tcon = cifs_find_tcon(ses, volume_info->UNC); |
| 2086 | if (tcon) { |
| 2087 | cFYI(1, "Found match on UNC path"); |
| 2088 | /* existing tcon already has a reference */ |
| 2089 | cifs_put_smb_ses(ses); |
| 2090 | if (tcon->seal != volume_info->seal) |
| 2091 | cERROR(1, "transport encryption setting " |
| 2092 | "conflicts with existing tid"); |
| 2093 | return tcon; |
| 2094 | } |
| 2095 | |
| 2096 | tcon = tconInfoAlloc(); |
| 2097 | if (tcon == NULL) { |
| 2098 | rc = -ENOMEM; |
| 2099 | goto out_fail; |
| 2100 | } |
| 2101 | |
| 2102 | tcon->ses = ses; |
| 2103 | if (volume_info->password) { |
| 2104 | tcon->password = kstrdup(volume_info->password, GFP_KERNEL); |
| 2105 | if (!tcon->password) { |
| 2106 | rc = -ENOMEM; |
| 2107 | goto out_fail; |
| 2108 | } |
| 2109 | } |
| 2110 | |
| 2111 | if (strchr(volume_info->UNC + 3, '\\') == NULL |
| 2112 | && strchr(volume_info->UNC + 3, '/') == NULL) { |
| 2113 | cERROR(1, "Missing share name"); |
| 2114 | rc = -ENODEV; |
| 2115 | goto out_fail; |
| 2116 | } |
| 2117 | |
| 2118 | /* BB Do we need to wrap session_mutex around |
| 2119 | * this TCon call and Unix SetFS as |
| 2120 | * we do on SessSetup and reconnect? */ |
| 2121 | xid = GetXid(); |
| 2122 | rc = CIFSTCon(xid, ses, volume_info->UNC, tcon, volume_info->local_nls); |
| 2123 | FreeXid(xid); |
| 2124 | cFYI(1, "CIFS Tcon rc = %d", rc); |
| 2125 | if (rc) |
| 2126 | goto out_fail; |
| 2127 | |
| 2128 | if (volume_info->nodfs) { |
| 2129 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
| 2130 | cFYI(1, "DFS disabled (%d)", tcon->Flags); |
| 2131 | } |
| 2132 | tcon->seal = volume_info->seal; |
| 2133 | /* we can have only one retry value for a connection |
| 2134 | to a share so for resources mounted more than once |
| 2135 | to the same server share the last value passed in |
| 2136 | for the retry flag is used */ |
| 2137 | tcon->retry = volume_info->retry; |
| 2138 | tcon->nocase = volume_info->nocase; |
| 2139 | tcon->local_lease = volume_info->local_lease; |
| 2140 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2141 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2142 | list_add(&tcon->tcon_list, &ses->tcon_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2143 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2144 | |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 2145 | cifs_fscache_get_super_cookie(tcon); |
| 2146 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2147 | return tcon; |
| 2148 | |
| 2149 | out_fail: |
| 2150 | tconInfoFree(tcon); |
| 2151 | return ERR_PTR(rc); |
| 2152 | } |
| 2153 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2154 | void |
| 2155 | cifs_put_tlink(struct tcon_link *tlink) |
| 2156 | { |
| 2157 | if (!tlink || IS_ERR(tlink)) |
| 2158 | return; |
| 2159 | |
| 2160 | if (!atomic_dec_and_test(&tlink->tl_count) || |
| 2161 | test_bit(TCON_LINK_IN_TREE, &tlink->tl_flags)) { |
| 2162 | tlink->tl_time = jiffies; |
| 2163 | return; |
| 2164 | } |
| 2165 | |
| 2166 | if (!IS_ERR(tlink_tcon(tlink))) |
| 2167 | cifs_put_tcon(tlink_tcon(tlink)); |
| 2168 | kfree(tlink); |
| 2169 | return; |
| 2170 | } |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2171 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2172 | static inline struct tcon_link * |
Pavel Shilovsky | cd51875 | 2011-06-09 12:58:53 +0400 | [diff] [blame] | 2173 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) |
| 2174 | { |
| 2175 | return cifs_sb->master_tlink; |
| 2176 | } |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2177 | |
| 2178 | static int |
| 2179 | compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data) |
| 2180 | { |
| 2181 | struct cifs_sb_info *old = CIFS_SB(sb); |
| 2182 | struct cifs_sb_info *new = mnt_data->cifs_sb; |
| 2183 | |
| 2184 | if ((sb->s_flags & CIFS_MS_MASK) != (mnt_data->flags & CIFS_MS_MASK)) |
| 2185 | return 0; |
| 2186 | |
| 2187 | if ((old->mnt_cifs_flags & CIFS_MOUNT_MASK) != |
| 2188 | (new->mnt_cifs_flags & CIFS_MOUNT_MASK)) |
| 2189 | return 0; |
| 2190 | |
| 2191 | if (old->rsize != new->rsize) |
| 2192 | return 0; |
| 2193 | |
| 2194 | /* |
| 2195 | * We want to share sb only if we don't specify wsize or specified wsize |
| 2196 | * is greater or equal than existing one. |
| 2197 | */ |
| 2198 | if (new->wsize && new->wsize < old->wsize) |
| 2199 | return 0; |
| 2200 | |
| 2201 | if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid) |
| 2202 | return 0; |
| 2203 | |
| 2204 | if (old->mnt_file_mode != new->mnt_file_mode || |
| 2205 | old->mnt_dir_mode != new->mnt_dir_mode) |
| 2206 | return 0; |
| 2207 | |
| 2208 | if (strcmp(old->local_nls->charset, new->local_nls->charset)) |
| 2209 | return 0; |
| 2210 | |
| 2211 | if (old->actimeo != new->actimeo) |
| 2212 | return 0; |
| 2213 | |
| 2214 | return 1; |
| 2215 | } |
| 2216 | |
| 2217 | int |
| 2218 | cifs_match_super(struct super_block *sb, void *data) |
| 2219 | { |
| 2220 | struct cifs_mnt_data *mnt_data = (struct cifs_mnt_data *)data; |
| 2221 | struct smb_vol *volume_info; |
| 2222 | struct cifs_sb_info *cifs_sb; |
| 2223 | struct TCP_Server_Info *tcp_srv; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2224 | struct cifs_ses *ses; |
| 2225 | struct cifs_tcon *tcon; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2226 | struct tcon_link *tlink; |
| 2227 | struct sockaddr_storage addr; |
| 2228 | int rc = 0; |
| 2229 | |
| 2230 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
| 2231 | |
| 2232 | spin_lock(&cifs_tcp_ses_lock); |
| 2233 | cifs_sb = CIFS_SB(sb); |
| 2234 | tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb)); |
| 2235 | if (IS_ERR(tlink)) { |
| 2236 | spin_unlock(&cifs_tcp_ses_lock); |
| 2237 | return rc; |
| 2238 | } |
| 2239 | tcon = tlink_tcon(tlink); |
| 2240 | ses = tcon->ses; |
| 2241 | tcp_srv = ses->server; |
| 2242 | |
| 2243 | volume_info = mnt_data->vol; |
| 2244 | |
| 2245 | if (!volume_info->UNCip || !volume_info->UNC) |
| 2246 | goto out; |
| 2247 | |
| 2248 | rc = cifs_fill_sockaddr((struct sockaddr *)&addr, |
| 2249 | volume_info->UNCip, |
| 2250 | strlen(volume_info->UNCip), |
| 2251 | volume_info->port); |
| 2252 | if (!rc) |
| 2253 | goto out; |
| 2254 | |
| 2255 | if (!match_server(tcp_srv, (struct sockaddr *)&addr, volume_info) || |
| 2256 | !match_session(ses, volume_info) || |
| 2257 | !match_tcon(tcon, volume_info->UNC)) { |
| 2258 | rc = 0; |
| 2259 | goto out; |
| 2260 | } |
| 2261 | |
| 2262 | rc = compare_mount_options(sb, mnt_data); |
| 2263 | out: |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2264 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | f484b5d0 | 2011-07-11 10:16:34 -0400 | [diff] [blame] | 2265 | cifs_put_tlink(tlink); |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2266 | return rc; |
| 2267 | } |
| 2268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | int |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2270 | get_dfs_path(int xid, struct cifs_ses *pSesInfo, const char *old_path, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2271 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2272 | struct dfs_info3_param **preferrals, int remap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | { |
| 2274 | char *temp_unc; |
| 2275 | int rc = 0; |
| 2276 | |
| 2277 | *pnum_referrals = 0; |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2278 | *preferrals = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | |
| 2280 | if (pSesInfo->ipc_tid == 0) { |
| 2281 | temp_unc = kmalloc(2 /* for slashes */ + |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2282 | strnlen(pSesInfo->serverName, |
| 2283 | SERVER_NAME_LEN_WITH_NULL * 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | + 1 + 4 /* slash IPC$ */ + 2, |
| 2285 | GFP_KERNEL); |
| 2286 | if (temp_unc == NULL) |
| 2287 | return -ENOMEM; |
| 2288 | temp_unc[0] = '\\'; |
| 2289 | temp_unc[1] = '\\'; |
| 2290 | strcpy(temp_unc + 2, pSesInfo->serverName); |
| 2291 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); |
| 2292 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2293 | cFYI(1, "CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | kfree(temp_unc); |
| 2295 | } |
| 2296 | if (rc == 0) |
Steve French | c2cf07d | 2008-05-15 06:20:02 +0000 | [diff] [blame] | 2297 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 2298 | pnum_referrals, nls_codepage, remap); |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2299 | /* BB map targetUNCs to dfs_info3 structures, here or |
| 2300 | in CIFSGetDFSRefer BB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | |
| 2302 | return rc; |
| 2303 | } |
| 2304 | |
Jeff Layton | 09e50d5 | 2008-07-23 10:11:19 -0400 | [diff] [blame] | 2305 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 2306 | static struct lock_class_key cifs_key[2]; |
| 2307 | static struct lock_class_key cifs_slock_key[2]; |
| 2308 | |
| 2309 | static inline void |
| 2310 | cifs_reclassify_socket4(struct socket *sock) |
| 2311 | { |
| 2312 | struct sock *sk = sock->sk; |
| 2313 | BUG_ON(sock_owned_by_user(sk)); |
| 2314 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", |
| 2315 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); |
| 2316 | } |
| 2317 | |
| 2318 | static inline void |
| 2319 | cifs_reclassify_socket6(struct socket *sock) |
| 2320 | { |
| 2321 | struct sock *sk = sock->sk; |
| 2322 | BUG_ON(sock_owned_by_user(sk)); |
| 2323 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", |
| 2324 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); |
| 2325 | } |
| 2326 | #else |
| 2327 | static inline void |
| 2328 | cifs_reclassify_socket4(struct socket *sock) |
| 2329 | { |
| 2330 | } |
| 2331 | |
| 2332 | static inline void |
| 2333 | cifs_reclassify_socket6(struct socket *sock) |
| 2334 | { |
| 2335 | } |
| 2336 | #endif |
| 2337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | /* See RFC1001 section 14 on representation of Netbios names */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2339 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2341 | unsigned int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2343 | for (i = 0, j = 0; i < (length); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | /* mask a nibble at a time and encode */ |
| 2345 | target[j] = 'A' + (0x0F & (source[i] >> 4)); |
| 2346 | target[j+1] = 'A' + (0x0F & source[i]); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2347 | j += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | } |
| 2349 | |
| 2350 | } |
| 2351 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 2352 | static int |
| 2353 | bind_socket(struct TCP_Server_Info *server) |
| 2354 | { |
| 2355 | int rc = 0; |
| 2356 | if (server->srcaddr.ss_family != AF_UNSPEC) { |
| 2357 | /* Bind to the specified local IP address */ |
| 2358 | struct socket *socket = server->ssocket; |
| 2359 | rc = socket->ops->bind(socket, |
| 2360 | (struct sockaddr *) &server->srcaddr, |
| 2361 | sizeof(server->srcaddr)); |
| 2362 | if (rc < 0) { |
| 2363 | struct sockaddr_in *saddr4; |
| 2364 | struct sockaddr_in6 *saddr6; |
| 2365 | saddr4 = (struct sockaddr_in *)&server->srcaddr; |
| 2366 | saddr6 = (struct sockaddr_in6 *)&server->srcaddr; |
| 2367 | if (saddr6->sin6_family == AF_INET6) |
| 2368 | cERROR(1, "cifs: " |
| 2369 | "Failed to bind to: %pI6c, error: %d\n", |
| 2370 | &saddr6->sin6_addr, rc); |
| 2371 | else |
| 2372 | cERROR(1, "cifs: " |
| 2373 | "Failed to bind to: %pI4, error: %d\n", |
| 2374 | &saddr4->sin_addr.s_addr, rc); |
| 2375 | } |
| 2376 | } |
| 2377 | return rc; |
| 2378 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | |
| 2380 | static int |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2381 | ip_rfc1001_connect(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | { |
| 2383 | int rc = 0; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2384 | /* |
| 2385 | * some servers require RFC1001 sessinit before sending |
| 2386 | * negprot - BB check reconnection in case where second |
| 2387 | * sessinit is sent but no second negprot |
| 2388 | */ |
| 2389 | struct rfc1002_session_packet *ses_init_buf; |
| 2390 | struct smb_hdr *smb_buf; |
| 2391 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), |
| 2392 | GFP_KERNEL); |
| 2393 | if (ses_init_buf) { |
| 2394 | ses_init_buf->trailer.session_req.called_len = 32; |
| 2395 | |
| 2396 | if (server->server_RFC1001_name && |
| 2397 | server->server_RFC1001_name[0] != 0) |
| 2398 | rfc1002mangle(ses_init_buf->trailer. |
| 2399 | session_req.called_name, |
| 2400 | server->server_RFC1001_name, |
| 2401 | RFC1001_NAME_LEN_WITH_NULL); |
| 2402 | else |
| 2403 | rfc1002mangle(ses_init_buf->trailer. |
| 2404 | session_req.called_name, |
| 2405 | DEFAULT_CIFS_CALLED_NAME, |
| 2406 | RFC1001_NAME_LEN_WITH_NULL); |
| 2407 | |
| 2408 | ses_init_buf->trailer.session_req.calling_len = 32; |
| 2409 | |
| 2410 | /* |
| 2411 | * calling name ends in null (byte 16) from old smb |
| 2412 | * convention. |
| 2413 | */ |
| 2414 | if (server->workstation_RFC1001_name && |
| 2415 | server->workstation_RFC1001_name[0] != 0) |
| 2416 | rfc1002mangle(ses_init_buf->trailer. |
| 2417 | session_req.calling_name, |
| 2418 | server->workstation_RFC1001_name, |
| 2419 | RFC1001_NAME_LEN_WITH_NULL); |
| 2420 | else |
| 2421 | rfc1002mangle(ses_init_buf->trailer. |
| 2422 | session_req.calling_name, |
| 2423 | "LINUX_CIFS_CLNT", |
| 2424 | RFC1001_NAME_LEN_WITH_NULL); |
| 2425 | |
| 2426 | ses_init_buf->trailer.session_req.scope1 = 0; |
| 2427 | ses_init_buf->trailer.session_req.scope2 = 0; |
| 2428 | smb_buf = (struct smb_hdr *)ses_init_buf; |
| 2429 | |
| 2430 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ |
Steve French | be8e3b0 | 2011-04-29 05:40:20 +0000 | [diff] [blame] | 2431 | smb_buf->smb_buf_length = cpu_to_be32(0x81000044); |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2432 | rc = smb_send(server, smb_buf, 0x44); |
| 2433 | kfree(ses_init_buf); |
| 2434 | /* |
| 2435 | * RFC1001 layer in at least one server |
| 2436 | * requires very short break before negprot |
| 2437 | * presumably because not expecting negprot |
| 2438 | * to follow so fast. This is a simple |
| 2439 | * solution that works without |
| 2440 | * complicating the code and causes no |
| 2441 | * significant slowing down on mount |
| 2442 | * for everyone else |
| 2443 | */ |
| 2444 | usleep_range(1000, 2000); |
| 2445 | } |
| 2446 | /* |
| 2447 | * else the negprot may still work without this |
| 2448 | * even though malloc failed |
| 2449 | */ |
| 2450 | |
| 2451 | return rc; |
| 2452 | } |
| 2453 | |
| 2454 | static int |
| 2455 | generic_ip_connect(struct TCP_Server_Info *server) |
| 2456 | { |
| 2457 | int rc = 0; |
Steve French | 6da9791 | 2011-03-13 18:55:55 +0000 | [diff] [blame] | 2458 | __be16 sport; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2459 | int slen, sfamily; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2460 | struct socket *socket = server->ssocket; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2461 | struct sockaddr *saddr; |
| 2462 | |
| 2463 | saddr = (struct sockaddr *) &server->dstaddr; |
| 2464 | |
| 2465 | if (server->dstaddr.ss_family == AF_INET6) { |
| 2466 | sport = ((struct sockaddr_in6 *) saddr)->sin6_port; |
| 2467 | slen = sizeof(struct sockaddr_in6); |
| 2468 | sfamily = AF_INET6; |
| 2469 | } else { |
| 2470 | sport = ((struct sockaddr_in *) saddr)->sin_port; |
| 2471 | slen = sizeof(struct sockaddr_in); |
| 2472 | sfamily = AF_INET; |
| 2473 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2475 | if (socket == NULL) { |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 2476 | rc = __sock_create(cifs_net_ns(server), sfamily, SOCK_STREAM, |
| 2477 | IPPROTO_TCP, &socket, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | if (rc < 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2479 | cERROR(1, "Error %d creating socket", rc); |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2480 | server->ssocket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2482 | } |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2483 | |
| 2484 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2485 | cFYI(1, "Socket created"); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2486 | server->ssocket = socket; |
| 2487 | socket->sk->sk_allocation = GFP_NOFS; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2488 | if (sfamily == AF_INET6) |
| 2489 | cifs_reclassify_socket6(socket); |
| 2490 | else |
| 2491 | cifs_reclassify_socket4(socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | } |
| 2493 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 2494 | rc = bind_socket(server); |
| 2495 | if (rc < 0) |
| 2496 | return rc; |
| 2497 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 2498 | /* |
| 2499 | * Eventually check for other socket options to change from |
| 2500 | * the default. sock_setsockopt not used because it expects |
| 2501 | * user space buffer |
| 2502 | */ |
| 2503 | socket->sk->sk_rcvtimeo = 7 * HZ; |
Steve French | da505c3 | 2009-01-19 03:49:35 +0000 | [diff] [blame] | 2504 | socket->sk->sk_sndtimeo = 5 * HZ; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2505 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2506 | /* make the bufsizes depend on wsize/rsize and max requests */ |
| 2507 | if (server->noautotune) { |
| 2508 | if (socket->sk->sk_sndbuf < (200 * 1024)) |
| 2509 | socket->sk->sk_sndbuf = 200 * 1024; |
| 2510 | if (socket->sk->sk_rcvbuf < (140 * 1024)) |
| 2511 | socket->sk->sk_rcvbuf = 140 * 1024; |
| 2512 | } |
| 2513 | |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2514 | if (server->tcp_nodelay) { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2515 | int val = 1; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2516 | rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY, |
| 2517 | (char *)&val, sizeof(val)); |
| 2518 | if (rc) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2519 | cFYI(1, "set TCP_NODELAY socket option error %d", rc); |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2520 | } |
| 2521 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2522 | cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
| 2523 | socket->sk->sk_sndbuf, |
| 2524 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo); |
| 2525 | |
Jeff Layton | ee1b3ea | 2011-06-21 07:18:26 -0400 | [diff] [blame] | 2526 | rc = socket->ops->connect(socket, saddr, slen, 0); |
| 2527 | if (rc < 0) { |
| 2528 | cFYI(1, "Error %d connecting to server", rc); |
| 2529 | sock_release(socket); |
| 2530 | server->ssocket = NULL; |
| 2531 | return rc; |
| 2532 | } |
| 2533 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2534 | if (sport == htons(RFC1001_PORT)) |
| 2535 | rc = ip_rfc1001_connect(server); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2536 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2537 | return rc; |
| 2538 | } |
| 2539 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2540 | static int |
| 2541 | ip_connect(struct TCP_Server_Info *server) |
| 2542 | { |
Steve French | 6da9791 | 2011-03-13 18:55:55 +0000 | [diff] [blame] | 2543 | __be16 *sport; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2544 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; |
| 2545 | struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; |
| 2546 | |
| 2547 | if (server->dstaddr.ss_family == AF_INET6) |
| 2548 | sport = &addr6->sin6_port; |
| 2549 | else |
| 2550 | sport = &addr->sin_port; |
| 2551 | |
| 2552 | if (*sport == 0) { |
| 2553 | int rc; |
| 2554 | |
| 2555 | /* try with 445 port at first */ |
| 2556 | *sport = htons(CIFS_PORT); |
| 2557 | |
| 2558 | rc = generic_ip_connect(server); |
| 2559 | if (rc >= 0) |
| 2560 | return rc; |
| 2561 | |
| 2562 | /* if it failed, try with 139 port */ |
| 2563 | *sport = htons(RFC1001_PORT); |
| 2564 | } |
| 2565 | |
| 2566 | return generic_ip_connect(server); |
| 2567 | } |
| 2568 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2569 | void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 2570 | struct cifs_sb_info *cifs_sb, struct smb_vol *vol_info) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2571 | { |
| 2572 | /* if we are reconnecting then should we check to see if |
| 2573 | * any requested capabilities changed locally e.g. via |
| 2574 | * remount but we can not do much about it here |
| 2575 | * if they have (even if we could detect it by the following) |
| 2576 | * Perhaps we could add a backpointer to array of sb from tcon |
| 2577 | * or if we change to make all sb to same share the same |
| 2578 | * sb as NFS - then we only have one backpointer to sb. |
| 2579 | * What if we wanted to mount the server share twice once with |
| 2580 | * and once without posixacls or posix paths? */ |
| 2581 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2582 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2583 | if (vol_info && vol_info->no_linux_ext) { |
| 2584 | tcon->fsUnixInfo.Capability = 0; |
| 2585 | tcon->unix_ext = 0; /* Unix Extensions disabled */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2586 | cFYI(1, "Linux protocol extensions disabled"); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2587 | return; |
| 2588 | } else if (vol_info) |
| 2589 | tcon->unix_ext = 1; /* Unix Extensions supported */ |
| 2590 | |
| 2591 | if (tcon->unix_ext == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2592 | cFYI(1, "Unix extensions disabled so not set on reconnect"); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2593 | return; |
| 2594 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2595 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2596 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2597 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 6848b73 | 2011-05-26 18:38:54 +0000 | [diff] [blame] | 2598 | cFYI(1, "unix caps which server supports %lld", cap); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2599 | /* check for reconnect case in which we do not |
| 2600 | want to change the mount behavior if we can avoid it */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2601 | if (vol_info == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2602 | /* turn off POSIX ACL and PATHNAMES if not set |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2603 | originally at mount time */ |
| 2604 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) |
| 2605 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2606 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
| 2607 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2608 | cERROR(1, "POSIXPATH support change"); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2609 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2610 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2611 | cERROR(1, "possible reconnect error"); |
| 2612 | cERROR(1, "server disabled POSIX path support"); |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2613 | } |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2614 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2615 | |
Steve French | 6848b73 | 2011-05-26 18:38:54 +0000 | [diff] [blame] | 2616 | if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP) |
| 2617 | cERROR(1, "per-share encryption not supported yet"); |
| 2618 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2619 | cap &= CIFS_UNIX_CAP_MASK; |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2620 | if (vol_info && vol_info->no_psx_acl) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2621 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2622 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2623 | cFYI(1, "negotiated posix acl support"); |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 2624 | if (cifs_sb) |
| 2625 | cifs_sb->mnt_cifs_flags |= |
| 2626 | CIFS_MOUNT_POSIXACL; |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2627 | } |
| 2628 | |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2629 | if (vol_info && vol_info->posix_paths == 0) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2630 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2631 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2632 | cFYI(1, "negotiate posix pathnames"); |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 2633 | if (cifs_sb) |
| 2634 | cifs_sb->mnt_cifs_flags |= |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2635 | CIFS_MOUNT_POSIX_PATHS; |
| 2636 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2637 | |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 2638 | if (cifs_sb && (cifs_sb->rsize > 127 * 1024)) { |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2639 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 2640 | cifs_sb->rsize = 127 * 1024; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2641 | cFYI(DBG2, "larger reads not supported by srv"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2642 | } |
| 2643 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2644 | |
| 2645 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2646 | cFYI(1, "Negotiate caps 0x%x", (int)cap); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2647 | #ifdef CONFIG_CIFS_DEBUG2 |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2648 | if (cap & CIFS_UNIX_FCNTL_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2649 | cFYI(1, "FCNTL cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2650 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2651 | cFYI(1, "EXTATTR cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2652 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2653 | cFYI(1, "POSIX path cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2654 | if (cap & CIFS_UNIX_XATTR_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2655 | cFYI(1, "XATTR cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2656 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2657 | cFYI(1, "POSIX ACL cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2658 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2659 | cFYI(1, "very large read cap"); |
Steve French | 75865f8c | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2660 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2661 | cFYI(1, "very large write cap"); |
Steve French | 6848b73 | 2011-05-26 18:38:54 +0000 | [diff] [blame] | 2662 | if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP) |
| 2663 | cFYI(1, "transport encryption cap"); |
| 2664 | if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP) |
| 2665 | cFYI(1, "mandatory transport encryption cap"); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2666 | #endif /* CIFS_DEBUG2 */ |
| 2667 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2668 | if (vol_info == NULL) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2669 | cFYI(1, "resetting capabilities failed"); |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2670 | } else |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2671 | cERROR(1, "Negotiating Unix capabilities " |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2672 | "with the server failed. Consider " |
| 2673 | "mounting with the Unix Extensions\n" |
| 2674 | "disabled, if problems are found, " |
| 2675 | "by specifying the nounix mount " |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2676 | "option."); |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2677 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2678 | } |
| 2679 | } |
| 2680 | } |
| 2681 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 2682 | void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, |
| 2683 | struct cifs_sb_info *cifs_sb) |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2684 | { |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 2685 | INIT_DELAYED_WORK(&cifs_sb->prune_tlinks, cifs_prune_tlinks); |
| 2686 | |
Al Viro | 2ced6f6 | 2011-06-17 09:20:04 -0400 | [diff] [blame] | 2687 | spin_lock_init(&cifs_sb->tlink_tree_lock); |
| 2688 | cifs_sb->tlink_tree = RB_ROOT; |
| 2689 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2690 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2691 | cERROR(1, "rsize %d too large, using MaxBufSize", |
| 2692 | pvolume_info->rsize); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2693 | cifs_sb->rsize = CIFSMaxBufSize; |
| 2694 | } else if ((pvolume_info->rsize) && |
| 2695 | (pvolume_info->rsize <= CIFSMaxBufSize)) |
| 2696 | cifs_sb->rsize = pvolume_info->rsize; |
| 2697 | else /* default */ |
| 2698 | cifs_sb->rsize = CIFSMaxBufSize; |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2699 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2700 | if (cifs_sb->rsize < 2048) { |
| 2701 | cifs_sb->rsize = 2048; |
| 2702 | /* Windows ME may prefer this */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2703 | cFYI(1, "readsize set to minimum: 2048"); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2704 | } |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 2705 | |
| 2706 | /* |
| 2707 | * Temporarily set wsize for matching superblock. If we end up using |
| 2708 | * new sb then cifs_negotiate_wsize will later negotiate it downward |
| 2709 | * if needed. |
| 2710 | */ |
| 2711 | cifs_sb->wsize = pvolume_info->wsize; |
| 2712 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2713 | cifs_sb->mnt_uid = pvolume_info->linux_uid; |
| 2714 | cifs_sb->mnt_gid = pvolume_info->linux_gid; |
| 2715 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; |
| 2716 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2717 | cFYI(1, "file mode: 0x%x dir mode: 0x%x", |
| 2718 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2719 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 2720 | cifs_sb->actimeo = pvolume_info->actimeo; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 2721 | cifs_sb->local_nls = pvolume_info->local_nls; |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 2722 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2723 | if (pvolume_info->noperm) |
| 2724 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
| 2725 | if (pvolume_info->setuids) |
| 2726 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
| 2727 | if (pvolume_info->server_ino) |
| 2728 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
| 2729 | if (pvolume_info->remap) |
| 2730 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
| 2731 | if (pvolume_info->no_xattr) |
| 2732 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
| 2733 | if (pvolume_info->sfu_emul) |
| 2734 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
| 2735 | if (pvolume_info->nobrl) |
| 2736 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 2737 | if (pvolume_info->nostrictsync) |
Steve French | 4717bed | 2009-02-24 14:44:19 +0000 | [diff] [blame] | 2738 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 2739 | if (pvolume_info->mand_lock) |
| 2740 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 2741 | if (pvolume_info->rwpidforward) |
| 2742 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2743 | if (pvolume_info->cifs_acl) |
| 2744 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
| 2745 | if (pvolume_info->override_uid) |
| 2746 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; |
| 2747 | if (pvolume_info->override_gid) |
| 2748 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; |
| 2749 | if (pvolume_info->dynperm) |
| 2750 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 2751 | if (pvolume_info->fsc) |
| 2752 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_FSCACHE; |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 2753 | if (pvolume_info->multiuser) |
| 2754 | cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER | |
| 2755 | CIFS_MOUNT_NO_PERM); |
Pavel Shilovsky | d39454f | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 2756 | if (pvolume_info->strict_io) |
| 2757 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2758 | if (pvolume_info->direct_io) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2759 | cFYI(1, "mounting share using direct i/o"); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2760 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
| 2761 | } |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 2762 | if (pvolume_info->mfsymlinks) { |
| 2763 | if (pvolume_info->sfu_emul) { |
| 2764 | cERROR(1, "mount option mfsymlinks ignored if sfu " |
| 2765 | "mount option is used"); |
| 2766 | } else { |
| 2767 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS; |
| 2768 | } |
| 2769 | } |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2770 | |
| 2771 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2772 | cERROR(1, "mount option dynperm ignored if cifsacl " |
| 2773 | "mount option supported"); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2774 | } |
| 2775 | |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2776 | /* |
| 2777 | * When the server supports very large writes via POSIX extensions, we can |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2778 | * allow up to 2^24-1, minus the size of a WRITE_AND_X header, not including |
| 2779 | * the RFC1001 length. |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2780 | * |
| 2781 | * Note that this might make for "interesting" allocation problems during |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2782 | * writeback however as we have to allocate an array of pointers for the |
| 2783 | * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2784 | */ |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2785 | #define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2786 | |
| 2787 | /* |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2788 | * When the server doesn't allow large posix writes, only allow a wsize of |
| 2789 | * 128k minus the size of the WRITE_AND_X header. That allows for a write up |
| 2790 | * to the maximum size described by RFC1002. |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2791 | */ |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2792 | #define CIFS_MAX_RFC1002_WSIZE (128 * 1024 - sizeof(WRITE_REQ) + 4) |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2793 | |
| 2794 | /* |
| 2795 | * The default wsize is 1M. find_get_pages seems to return a maximum of 256 |
| 2796 | * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill |
| 2797 | * a single wsize request with a single call. |
| 2798 | */ |
| 2799 | #define CIFS_DEFAULT_WSIZE (1024 * 1024) |
| 2800 | |
| 2801 | static unsigned int |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2802 | cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info) |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2803 | { |
| 2804 | __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
| 2805 | struct TCP_Server_Info *server = tcon->ses->server; |
| 2806 | unsigned int wsize = pvolume_info->wsize ? pvolume_info->wsize : |
| 2807 | CIFS_DEFAULT_WSIZE; |
| 2808 | |
| 2809 | /* can server support 24-bit write sizes? (via UNIX extensions) */ |
| 2810 | if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2811 | wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE); |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2812 | |
Jeff Layton | 1190f6a | 2011-06-22 17:33:57 -0400 | [diff] [blame] | 2813 | /* |
| 2814 | * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set? |
| 2815 | * Limit it to max buffer offered by the server, minus the size of the |
| 2816 | * WRITEX header, not including the 4 byte RFC1001 length. |
| 2817 | */ |
| 2818 | if (!(server->capabilities & CAP_LARGE_WRITE_X) || |
| 2819 | (!(server->capabilities & CAP_UNIX) && |
| 2820 | (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)))) |
| 2821 | wsize = min_t(unsigned int, wsize, |
| 2822 | server->maxBuf - sizeof(WRITE_REQ) + 4); |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 2823 | |
| 2824 | /* hard limit of CIFS_MAX_WSIZE */ |
| 2825 | wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE); |
| 2826 | |
| 2827 | return wsize; |
| 2828 | } |
| 2829 | |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2830 | static int |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2831 | is_path_accessible(int xid, struct cifs_tcon *tcon, |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2832 | struct cifs_sb_info *cifs_sb, const char *full_path) |
| 2833 | { |
| 2834 | int rc; |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2835 | FILE_ALL_INFO *pfile_info; |
| 2836 | |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2837 | pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
| 2838 | if (pfile_info == NULL) |
| 2839 | return -ENOMEM; |
| 2840 | |
| 2841 | rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, |
| 2842 | 0 /* not legacy */, cifs_sb->local_nls, |
| 2843 | cifs_sb->mnt_cifs_flags & |
| 2844 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 221d1d7 | 2011-05-17 06:40:30 -0400 | [diff] [blame] | 2845 | |
| 2846 | if (rc == -EOPNOTSUPP || rc == -EINVAL) |
| 2847 | rc = SMBQueryInformation(xid, tcon, full_path, pfile_info, |
| 2848 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 2849 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2850 | kfree(pfile_info); |
| 2851 | return rc; |
| 2852 | } |
| 2853 | |
Jeff Layton | b9bce2e | 2011-07-06 08:10:39 -0400 | [diff] [blame] | 2854 | static void |
| 2855 | cleanup_volume_info_contents(struct smb_vol *volume_info) |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2856 | { |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 2857 | kfree(volume_info->username); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2858 | kzfree(volume_info->password); |
| 2859 | kfree(volume_info->UNC); |
Sean Finney | b946845 | 2011-04-11 13:19:32 +0000 | [diff] [blame] | 2860 | kfree(volume_info->UNCip); |
| 2861 | kfree(volume_info->domainname); |
| 2862 | kfree(volume_info->iocharset); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2863 | kfree(volume_info->prepath); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2864 | } |
| 2865 | |
Jeff Layton | b9bce2e | 2011-07-06 08:10:39 -0400 | [diff] [blame] | 2866 | void |
| 2867 | cifs_cleanup_volume_info(struct smb_vol *volume_info) |
| 2868 | { |
| 2869 | if (!volume_info) |
| 2870 | return; |
| 2871 | cleanup_volume_info_contents(volume_info); |
| 2872 | kfree(volume_info); |
| 2873 | } |
| 2874 | |
| 2875 | |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2876 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2877 | /* build_path_to_root returns full path to root when |
| 2878 | * we do not have an exiting connection (tcon) */ |
| 2879 | static char * |
Jeff Layton | b2a0fa1 | 2011-07-06 08:10:36 -0400 | [diff] [blame] | 2880 | build_unc_path_to_root(const struct smb_vol *vol, |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2881 | const struct cifs_sb_info *cifs_sb) |
| 2882 | { |
Jeff Layton | b2a0fa1 | 2011-07-06 08:10:36 -0400 | [diff] [blame] | 2883 | char *full_path, *pos; |
| 2884 | unsigned int pplen = vol->prepath ? strlen(vol->prepath) : 0; |
| 2885 | unsigned int unc_len = strnlen(vol->UNC, MAX_TREE_SIZE + 1); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2886 | |
Jeff Layton | b2a0fa1 | 2011-07-06 08:10:36 -0400 | [diff] [blame] | 2887 | full_path = kmalloc(unc_len + pplen + 1, GFP_KERNEL); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2888 | if (full_path == NULL) |
| 2889 | return ERR_PTR(-ENOMEM); |
| 2890 | |
Jeff Layton | b2a0fa1 | 2011-07-06 08:10:36 -0400 | [diff] [blame] | 2891 | strncpy(full_path, vol->UNC, unc_len); |
| 2892 | pos = full_path + unc_len; |
| 2893 | |
| 2894 | if (pplen) { |
| 2895 | strncpy(pos, vol->prepath, pplen); |
| 2896 | pos += pplen; |
| 2897 | } |
| 2898 | |
| 2899 | *pos = '\0'; /* add trailing null */ |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 2900 | convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb)); |
Jeff Layton | b2a0fa1 | 2011-07-06 08:10:36 -0400 | [diff] [blame] | 2901 | cFYI(1, "%s: full_path=%s", __func__, full_path); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2902 | return full_path; |
| 2903 | } |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2904 | |
| 2905 | /* |
| 2906 | * Perform a dfs referral query for a share and (optionally) prefix |
| 2907 | * |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 2908 | * If a referral is found, cifs_sb->mountdata will be (re-)allocated |
| 2909 | * to a string containing updated options for the submount. Otherwise it |
| 2910 | * will be left untouched. |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2911 | * |
| 2912 | * Returns the rc from get_dfs_path to the caller, which can be used to |
| 2913 | * determine whether there were referrals. |
| 2914 | */ |
| 2915 | static int |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2916 | expand_dfs_referral(int xid, struct cifs_ses *pSesInfo, |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2917 | struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb, |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 2918 | int check_prefix) |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2919 | { |
| 2920 | int rc; |
| 2921 | unsigned int num_referrals = 0; |
| 2922 | struct dfs_info3_param *referrals = NULL; |
| 2923 | char *full_path = NULL, *ref_path = NULL, *mdata = NULL; |
| 2924 | |
| 2925 | full_path = build_unc_path_to_root(volume_info, cifs_sb); |
| 2926 | if (IS_ERR(full_path)) |
| 2927 | return PTR_ERR(full_path); |
| 2928 | |
| 2929 | /* For DFS paths, skip the first '\' of the UNC */ |
| 2930 | ref_path = check_prefix ? full_path + 1 : volume_info->UNC + 1; |
| 2931 | |
| 2932 | rc = get_dfs_path(xid, pSesInfo , ref_path, cifs_sb->local_nls, |
| 2933 | &num_referrals, &referrals, |
| 2934 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2935 | |
| 2936 | if (!rc && num_referrals > 0) { |
| 2937 | char *fake_devname = NULL; |
| 2938 | |
| 2939 | mdata = cifs_compose_mount_options(cifs_sb->mountdata, |
| 2940 | full_path + 1, referrals, |
| 2941 | &fake_devname); |
| 2942 | |
| 2943 | free_dfs_info_array(referrals, num_referrals); |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 2944 | |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2945 | if (IS_ERR(mdata)) { |
| 2946 | rc = PTR_ERR(mdata); |
| 2947 | mdata = NULL; |
Jeff Layton | b9bce2e | 2011-07-06 08:10:39 -0400 | [diff] [blame] | 2948 | } else { |
| 2949 | cleanup_volume_info_contents(volume_info); |
| 2950 | memset(volume_info, '\0', sizeof(*volume_info)); |
| 2951 | rc = cifs_setup_volume_info(volume_info, mdata, |
| 2952 | fake_devname); |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2953 | } |
Jeff Layton | b9bce2e | 2011-07-06 08:10:39 -0400 | [diff] [blame] | 2954 | kfree(fake_devname); |
| 2955 | kfree(cifs_sb->mountdata); |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 2956 | cifs_sb->mountdata = mdata; |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2957 | } |
| 2958 | kfree(full_path); |
| 2959 | return rc; |
| 2960 | } |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2961 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2962 | |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 2963 | static int |
| 2964 | cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, |
| 2965 | const char *devname) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | { |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 2967 | int rc = 0; |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 2968 | |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 2969 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) |
| 2970 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2972 | if (volume_info->nullauth) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2973 | cFYI(1, "null user"); |
Pavel Shilovsky | 446b23a | 2011-06-20 12:33:16 +0400 | [diff] [blame] | 2974 | volume_info->username = kzalloc(1, GFP_KERNEL); |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 2975 | if (volume_info->username == NULL) |
| 2976 | return -ENOMEM; |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2977 | } else if (volume_info->username) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | /* BB fixme parse for domain name here */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2979 | cFYI(1, "Username: %s", volume_info->username); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | } else { |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 2981 | cifserror("No username specified"); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2982 | /* In userspace mount helper we can get user name from alternate |
| 2983 | locations such as env variables and files on disk */ |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 2984 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2985 | } |
| 2986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | /* this is needed for ASCII cp to Unicode converts */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2988 | if (volume_info->iocharset == NULL) { |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 2989 | /* load_nls_default cannot return null */ |
| 2990 | volume_info->local_nls = load_nls_default(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | } else { |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 2992 | volume_info->local_nls = load_nls(volume_info->iocharset); |
| 2993 | if (volume_info->local_nls == NULL) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2994 | cERROR(1, "CIFS mount error: iocharset %s not found", |
| 2995 | volume_info->iocharset); |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 2996 | return -ELIBACC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | } |
| 2998 | } |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 2999 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3000 | return rc; |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 3001 | } |
| 3002 | |
| 3003 | struct smb_vol * |
| 3004 | cifs_get_volume_info(char *mount_data, const char *devname) |
| 3005 | { |
| 3006 | int rc; |
| 3007 | struct smb_vol *volume_info; |
| 3008 | |
| 3009 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
| 3010 | if (!volume_info) |
| 3011 | return ERR_PTR(-ENOMEM); |
| 3012 | |
| 3013 | rc = cifs_setup_volume_info(volume_info, mount_data, devname); |
| 3014 | if (rc) { |
| 3015 | cifs_cleanup_volume_info(volume_info); |
| 3016 | volume_info = ERR_PTR(rc); |
| 3017 | } |
| 3018 | |
| 3019 | return volume_info; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3020 | } |
| 3021 | |
| 3022 | int |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 3023 | cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info) |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3024 | { |
| 3025 | int rc = 0; |
| 3026 | int xid; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3027 | struct cifs_ses *pSesInfo; |
| 3028 | struct cifs_tcon *tcon; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3029 | struct TCP_Server_Info *srvTcp; |
| 3030 | char *full_path; |
| 3031 | struct tcon_link *tlink; |
| 3032 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 3033 | int referral_walks_count = 0; |
Jeff Layton | 2054749 | 2011-07-09 12:21:07 -0400 | [diff] [blame] | 3034 | #endif |
Al Viro | dd85446 | 2011-06-17 08:24:42 -0400 | [diff] [blame] | 3035 | |
| 3036 | rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY); |
| 3037 | if (rc) |
| 3038 | return rc; |
| 3039 | |
| 3040 | cifs_sb->bdi.ra_pages = default_backing_dev_info.ra_pages; |
| 3041 | |
Jeff Layton | 2054749 | 2011-07-09 12:21:07 -0400 | [diff] [blame] | 3042 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3043 | try_mount_again: |
| 3044 | /* cleanup activities if we're chasing a referral */ |
| 3045 | if (referral_walks_count) { |
| 3046 | if (tcon) |
| 3047 | cifs_put_tcon(tcon); |
| 3048 | else if (pSesInfo) |
| 3049 | cifs_put_smb_ses(pSesInfo); |
| 3050 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 3051 | FreeXid(xid); |
| 3052 | } |
| 3053 | #endif |
| 3054 | tcon = NULL; |
| 3055 | pSesInfo = NULL; |
| 3056 | srvTcp = NULL; |
| 3057 | full_path = NULL; |
| 3058 | tlink = NULL; |
| 3059 | |
| 3060 | xid = GetXid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 3062 | /* get a reference to a tcp session */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 3063 | srvTcp = cifs_get_tcp_session(volume_info); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 3064 | if (IS_ERR(srvTcp)) { |
| 3065 | rc = PTR_ERR(srvTcp); |
Al Viro | dd85446 | 2011-06-17 08:24:42 -0400 | [diff] [blame] | 3066 | bdi_destroy(&cifs_sb->bdi); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 3067 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | } |
| 3069 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 3070 | /* get a reference to a SMB session */ |
| 3071 | pSesInfo = cifs_get_smb_ses(srvTcp, volume_info); |
| 3072 | if (IS_ERR(pSesInfo)) { |
| 3073 | rc = PTR_ERR(pSesInfo); |
| 3074 | pSesInfo = NULL; |
| 3075 | goto mount_fail_check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3076 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3077 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 3078 | /* search for existing tcon to this server share */ |
| 3079 | tcon = cifs_get_tcon(pSesInfo, volume_info); |
| 3080 | if (IS_ERR(tcon)) { |
| 3081 | rc = PTR_ERR(tcon); |
| 3082 | tcon = NULL; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3083 | goto remote_path_check; |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 3084 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3085 | |
Steve French | 6848b73 | 2011-05-26 18:38:54 +0000 | [diff] [blame] | 3086 | /* tell server which Unix caps we support */ |
| 3087 | if (tcon->ses->capabilities & CAP_UNIX) { |
| 3088 | /* reset of caps checks mount to see if unix extensions |
| 3089 | disabled for just this mount */ |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 3090 | reset_cifs_unix_caps(xid, tcon, cifs_sb, volume_info); |
Steve French | 6848b73 | 2011-05-26 18:38:54 +0000 | [diff] [blame] | 3091 | if ((tcon->ses->server->tcpStatus == CifsNeedReconnect) && |
| 3092 | (le64_to_cpu(tcon->fsUnixInfo.Capability) & |
| 3093 | CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP)) { |
| 3094 | rc = -EACCES; |
| 3095 | goto mount_fail_check; |
| 3096 | } |
| 3097 | } else |
| 3098 | tcon->unix_ext = 0; /* server does not support them */ |
| 3099 | |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 3100 | /* do not care if following two calls succeed - informational */ |
| 3101 | if (!tcon->ipc) { |
| 3102 | CIFSSMBQFSDeviceInfo(xid, tcon); |
| 3103 | CIFSSMBQFSAttributeInfo(xid, tcon); |
| 3104 | } |
| 3105 | |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 3106 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
| 3107 | cifs_sb->rsize = 1024 * 127; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3108 | cFYI(DBG2, "no very large read support, rsize now 127K"); |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 3109 | } |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 3110 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
| 3111 | cifs_sb->rsize = min(cifs_sb->rsize, |
| 3112 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3113 | |
Jeff Layton | f7910cb | 2011-05-19 16:22:58 -0400 | [diff] [blame] | 3114 | cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info); |
| 3115 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3116 | remote_path_check: |
Sean Finney | c1508ca | 2011-04-11 13:19:31 +0000 | [diff] [blame] | 3117 | #ifdef CONFIG_CIFS_DFS_UPCALL |
| 3118 | /* |
| 3119 | * Perform an unconditional check for whether there are DFS |
| 3120 | * referrals for this path without prefix, to provide support |
| 3121 | * for DFS referrals from w2k8 servers which don't seem to respond |
| 3122 | * with PATH_NOT_COVERED to requests that include the prefix. |
| 3123 | * Chase the referral if found, otherwise continue normally. |
| 3124 | */ |
| 3125 | if (referral_walks_count == 0) { |
| 3126 | int refrc = expand_dfs_referral(xid, pSesInfo, volume_info, |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 3127 | cifs_sb, false); |
Sean Finney | c1508ca | 2011-04-11 13:19:31 +0000 | [diff] [blame] | 3128 | if (!refrc) { |
| 3129 | referral_walks_count++; |
| 3130 | goto try_mount_again; |
| 3131 | } |
| 3132 | } |
| 3133 | #endif |
| 3134 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 3135 | /* check if a whole path is not remote */ |
Jeff Layton | 7094564 | 2011-03-14 13:48:08 -0400 | [diff] [blame] | 3136 | if (!rc && tcon) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 3137 | /* build_path_to_root works only when we have a valid tcon */ |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 3138 | full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon); |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 3139 | if (full_path == NULL) { |
| 3140 | rc = -ENOMEM; |
| 3141 | goto mount_fail_check; |
| 3142 | } |
| 3143 | rc = is_path_accessible(xid, tcon, cifs_sb, full_path); |
Jeff Layton | 03ceace | 2010-12-06 21:07:33 -0500 | [diff] [blame] | 3144 | if (rc != 0 && rc != -EREMOTE) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 3145 | kfree(full_path); |
| 3146 | goto mount_fail_check; |
| 3147 | } |
| 3148 | kfree(full_path); |
| 3149 | } |
| 3150 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3151 | /* get referral if needed */ |
| 3152 | if (rc == -EREMOTE) { |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 3153 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 3154 | if (referral_walks_count > MAX_NESTED_LINKS) { |
| 3155 | /* |
| 3156 | * BB: when we implement proper loop detection, |
| 3157 | * we will remove this check. But now we need it |
| 3158 | * to prevent an indefinite loop if 'DFS tree' is |
| 3159 | * misconfigured (i.e. has loops). |
| 3160 | */ |
| 3161 | rc = -ELOOP; |
| 3162 | goto mount_fail_check; |
| 3163 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3164 | |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 3165 | rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb, |
Sean Finney | 046462a | 2011-04-11 13:19:33 +0000 | [diff] [blame] | 3166 | true); |
Jeff Layton | 7b91e26 | 2009-07-23 15:22:30 -0400 | [diff] [blame] | 3167 | |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 3168 | if (!rc) { |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 3169 | referral_walks_count++; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3170 | goto try_mount_again; |
| 3171 | } |
Sean Finney | dd61394 | 2011-04-11 13:19:30 +0000 | [diff] [blame] | 3172 | goto mount_fail_check; |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 3173 | #else /* No DFS support, return error on mount */ |
| 3174 | rc = -EOPNOTSUPP; |
| 3175 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3176 | } |
| 3177 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3178 | if (rc) |
| 3179 | goto mount_fail_check; |
| 3180 | |
| 3181 | /* now, hang the tcon off of the superblock */ |
| 3182 | tlink = kzalloc(sizeof *tlink, GFP_KERNEL); |
| 3183 | if (tlink == NULL) { |
| 3184 | rc = -ENOMEM; |
| 3185 | goto mount_fail_check; |
| 3186 | } |
| 3187 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3188 | tlink->tl_uid = pSesInfo->linux_uid; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3189 | tlink->tl_tcon = tcon; |
| 3190 | tlink->tl_time = jiffies; |
| 3191 | set_bit(TCON_LINK_MASTER, &tlink->tl_flags); |
| 3192 | set_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 3193 | |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 3194 | cifs_sb->master_tlink = tlink; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3195 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3196 | tlink_rb_insert(&cifs_sb->tlink_tree, tlink); |
| 3197 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 3198 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3199 | queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, |
| 3200 | TLINK_IDLE_EXPIRE); |
| 3201 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3202 | mount_fail_check: |
| 3203 | /* on error free sesinfo and tcon struct if needed */ |
| 3204 | if (rc) { |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3205 | /* If find_unc succeeded then rc == 0 so we can not end */ |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3206 | /* up accidentally freeing someone elses tcon struct */ |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3207 | if (tcon) |
| 3208 | cifs_put_tcon(tcon); |
| 3209 | else if (pSesInfo) |
| 3210 | cifs_put_smb_ses(pSesInfo); |
| 3211 | else |
| 3212 | cifs_put_tcp_session(srvTcp); |
Al Viro | dd85446 | 2011-06-17 08:24:42 -0400 | [diff] [blame] | 3213 | bdi_destroy(&cifs_sb->bdi); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 3214 | } |
| 3215 | |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 3216 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | FreeXid(xid); |
| 3218 | return rc; |
| 3219 | } |
| 3220 | |
Jeff Layton | 8d1bca3 | 2011-06-11 21:17:10 -0400 | [diff] [blame] | 3221 | /* |
| 3222 | * Issue a TREE_CONNECT request. Note that for IPC$ shares, that the tcon |
| 3223 | * pointer may be NULL. |
| 3224 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3225 | int |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3226 | CIFSTCon(unsigned int xid, struct cifs_ses *ses, |
| 3227 | const char *tree, struct cifs_tcon *tcon, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3228 | const struct nls_table *nls_codepage) |
| 3229 | { |
| 3230 | struct smb_hdr *smb_buffer; |
| 3231 | struct smb_hdr *smb_buffer_response; |
| 3232 | TCONX_REQ *pSMB; |
| 3233 | TCONX_RSP *pSMBr; |
| 3234 | unsigned char *bcc_ptr; |
| 3235 | int rc = 0; |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 3236 | int length; |
| 3237 | __u16 bytes_left, count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3238 | |
| 3239 | if (ses == NULL) |
| 3240 | return -EIO; |
| 3241 | |
| 3242 | smb_buffer = cifs_buf_get(); |
Steve French | ca43e3b | 2009-09-01 17:20:50 +0000 | [diff] [blame] | 3243 | if (smb_buffer == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3244 | return -ENOMEM; |
Steve French | ca43e3b | 2009-09-01 17:20:50 +0000 | [diff] [blame] | 3245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3246 | smb_buffer_response = smb_buffer; |
| 3247 | |
| 3248 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, |
| 3249 | NULL /*no tid */ , 4 /*wct */ ); |
Steve French | 1982c34 | 2005-08-17 12:38:22 -0700 | [diff] [blame] | 3250 | |
| 3251 | smb_buffer->Mid = GetNextMid(ses->server); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3252 | smb_buffer->Uid = ses->Suid; |
| 3253 | pSMB = (TCONX_REQ *) smb_buffer; |
| 3254 | pSMBr = (TCONX_RSP *) smb_buffer_response; |
| 3255 | |
| 3256 | pSMB->AndXCommand = 0xFF; |
| 3257 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3258 | bcc_ptr = &pSMB->Password[0]; |
Jeff Layton | 8d1bca3 | 2011-06-11 21:17:10 -0400 | [diff] [blame] | 3259 | if (!tcon || (ses->server->sec_mode & SECMODE_USER)) { |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3260 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3261 | *bcc_ptr = 0; /* password is null byte */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3262 | bcc_ptr++; /* skip password */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3263 | /* already aligned so no need to do it below */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3264 | } else { |
Shirish Pargaonkar | 540b2e3 | 2011-01-18 22:33:54 -0600 | [diff] [blame] | 3265 | pSMB->PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE); |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3266 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
| 3267 | specified as required (when that support is added to |
| 3268 | the vfs in the future) as only NTLM or the much |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3269 | weaker LANMAN (which we do not send by default) is accepted |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3270 | by Samba (not sure whether other servers allow |
| 3271 | NTLMv2 password here) */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3272 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 3273 | if ((global_secflags & CIFSSEC_MAY_LANMAN) && |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 3274 | (ses->server->secType == LANMAN)) |
Shirish Pargaonkar | d3ba50b | 2010-10-27 15:20:36 -0500 | [diff] [blame] | 3275 | calc_lanman_hash(tcon->password, ses->server->cryptkey, |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3276 | ses->server->sec_mode & |
Jeff Layton | 4e53a3f | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 3277 | SECMODE_PW_ENCRYPT ? true : false, |
| 3278 | bcc_ptr); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3279 | else |
| 3280 | #endif /* CIFS_WEAK_PW_HASH */ |
Shirish Pargaonkar | ee2c925 | 2011-01-27 09:58:04 -0600 | [diff] [blame] | 3281 | rc = SMBNTencrypt(tcon->password, ses->server->cryptkey, |
| 3282 | bcc_ptr); |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3283 | |
Shirish Pargaonkar | 540b2e3 | 2011-01-18 22:33:54 -0600 | [diff] [blame] | 3284 | bcc_ptr += CIFS_AUTH_RESP_SIZE; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 3285 | if (ses->capabilities & CAP_UNICODE) { |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3286 | /* must align unicode strings */ |
| 3287 | *bcc_ptr = 0; /* null byte password */ |
| 3288 | bcc_ptr++; |
| 3289 | } |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3290 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3291 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3292 | if (ses->server->sec_mode & |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 3293 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3294 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| 3295 | |
| 3296 | if (ses->capabilities & CAP_STATUS32) { |
| 3297 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| 3298 | } |
| 3299 | if (ses->capabilities & CAP_DFS) { |
| 3300 | smb_buffer->Flags2 |= SMBFLG2_DFS; |
| 3301 | } |
| 3302 | if (ses->capabilities & CAP_UNICODE) { |
| 3303 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| 3304 | length = |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3305 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
| 3306 | 6 /* max utf8 char length in bytes */ * |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 3307 | (/* server len*/ + 256 /* share len */), nls_codepage); |
| 3308 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3309 | bcc_ptr += 2; /* skip trailing null */ |
| 3310 | } else { /* ASCII */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3311 | strcpy(bcc_ptr, tree); |
| 3312 | bcc_ptr += strlen(tree) + 1; |
| 3313 | } |
| 3314 | strcpy(bcc_ptr, "?????"); |
| 3315 | bcc_ptr += strlen("?????"); |
| 3316 | bcc_ptr += 1; |
| 3317 | count = bcc_ptr - &pSMB->Password[0]; |
Steve French | be8e3b0 | 2011-04-29 05:40:20 +0000 | [diff] [blame] | 3318 | pSMB->hdr.smb_buf_length = cpu_to_be32(be32_to_cpu( |
| 3319 | pSMB->hdr.smb_buf_length) + count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3320 | pSMB->ByteCount = cpu_to_le16(count); |
| 3321 | |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 3322 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
Jeff Layton | 7749981 | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 3323 | 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3325 | /* above now done in SendReceive */ |
| 3326 | if ((rc == 0) && (tcon != NULL)) { |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3327 | bool is_unicode; |
| 3328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3329 | tcon->tidStatus = CifsGood; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 3330 | tcon->need_reconnect = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3331 | tcon->tid = smb_buffer_response->Tid; |
| 3332 | bcc_ptr = pByteArea(smb_buffer_response); |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 3333 | bytes_left = get_bcc(smb_buffer_response); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3334 | length = strnlen(bcc_ptr, bytes_left - 2); |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3335 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) |
| 3336 | is_unicode = true; |
| 3337 | else |
| 3338 | is_unicode = false; |
| 3339 | |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3340 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3341 | /* skip service field (NB: this field is always ASCII) */ |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3342 | if (length == 3) { |
| 3343 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && |
| 3344 | (bcc_ptr[2] == 'C')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3345 | cFYI(1, "IPC connection"); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3346 | tcon->ipc = 1; |
| 3347 | } |
| 3348 | } else if (length == 2) { |
| 3349 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { |
| 3350 | /* the most common case */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3351 | cFYI(1, "disk share connection"); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3352 | } |
| 3353 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3354 | bcc_ptr += length + 1; |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3355 | bytes_left -= (length + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3356 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3357 | |
| 3358 | /* mostly informational -- no need to fail on error here */ |
Jeff Layton | 90a98b2 | 2009-07-20 13:40:52 -0400 | [diff] [blame] | 3359 | kfree(tcon->nativeFileSystem); |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 3360 | tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr, |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3361 | bytes_left, is_unicode, |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3362 | nls_codepage); |
| 3363 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3364 | cFYI(1, "nativeFileSystem=%s", tcon->nativeFileSystem); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3365 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 3366 | if ((smb_buffer_response->WordCount == 3) || |
Steve French | 1a4e15a | 2006-10-12 21:33:51 +0000 | [diff] [blame] | 3367 | (smb_buffer_response->WordCount == 7)) |
| 3368 | /* field is in same location */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 3369 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
| 3370 | else |
| 3371 | tcon->Flags = 0; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3372 | cFYI(1, "Tcon flags: 0x%x ", tcon->Flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3373 | } else if ((rc == 0) && tcon == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3374 | /* all we need to save for IPC$ connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3375 | ses->ipc_tid = smb_buffer_response->Tid; |
| 3376 | } |
| 3377 | |
Mariusz Kozlowski | a8a11d3 | 2007-10-03 16:41:24 +0000 | [diff] [blame] | 3378 | cifs_buf_release(smb_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3379 | return rc; |
| 3380 | } |
| 3381 | |
Al Viro | 2a9b995 | 2011-06-17 09:27:16 -0400 | [diff] [blame] | 3382 | void |
| 3383 | cifs_umount(struct cifs_sb_info *cifs_sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3384 | { |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3385 | struct rb_root *root = &cifs_sb->tlink_tree; |
| 3386 | struct rb_node *node; |
| 3387 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3388 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3389 | cancel_delayed_work_sync(&cifs_sb->prune_tlinks); |
| 3390 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3391 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3392 | while ((node = rb_first(root))) { |
| 3393 | tlink = rb_entry(node, struct tcon_link, tl_rbnode); |
| 3394 | cifs_get_tlink(tlink); |
| 3395 | clear_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 3396 | rb_erase(node, root); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3397 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3398 | spin_unlock(&cifs_sb->tlink_tree_lock); |
| 3399 | cifs_put_tlink(tlink); |
| 3400 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3401 | } |
| 3402 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3403 | |
Al Viro | dd85446 | 2011-06-17 08:24:42 -0400 | [diff] [blame] | 3404 | bdi_destroy(&cifs_sb->bdi); |
Al Viro | d757d71 | 2011-06-17 09:42:43 -0400 | [diff] [blame] | 3405 | kfree(cifs_sb->mountdata); |
| 3406 | unload_nls(cifs_sb->local_nls); |
| 3407 | kfree(cifs_sb); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3408 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3409 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3410 | int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3411 | { |
| 3412 | int rc = 0; |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3413 | struct TCP_Server_Info *server = ses->server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3414 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3415 | /* only send once per connect */ |
| 3416 | if (server->maxBuf != 0) |
| 3417 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3418 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3419 | rc = CIFSSMBNegotiate(xid, ses); |
| 3420 | if (rc == -EAGAIN) { |
| 3421 | /* retry only once on 1st time connection */ |
| 3422 | rc = CIFSSMBNegotiate(xid, ses); |
| 3423 | if (rc == -EAGAIN) |
| 3424 | rc = -EHOSTDOWN; |
| 3425 | } |
| 3426 | if (rc == 0) { |
| 3427 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 7fdbaa1 | 2011-06-10 16:14:57 -0400 | [diff] [blame] | 3428 | if (server->tcpStatus == CifsNeedNegotiate) |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3429 | server->tcpStatus = CifsGood; |
| 3430 | else |
| 3431 | rc = -EHOSTDOWN; |
| 3432 | spin_unlock(&GlobalMid_Lock); |
| 3433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3434 | } |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3435 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3436 | return rc; |
| 3437 | } |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3438 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3439 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3440 | int cifs_setup_session(unsigned int xid, struct cifs_ses *ses, |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3441 | struct nls_table *nls_info) |
| 3442 | { |
| 3443 | int rc = 0; |
| 3444 | struct TCP_Server_Info *server = ses->server; |
| 3445 | |
| 3446 | ses->flags = 0; |
| 3447 | ses->capabilities = server->capabilities; |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3448 | if (linuxExtEnabled == 0) |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3449 | ses->capabilities &= (~CAP_UNIX); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3450 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3451 | cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3452 | server->sec_mode, server->capabilities, server->timeAdj); |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 3453 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3454 | rc = CIFS_SessSetup(xid, ses, nls_info); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3455 | if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3456 | cERROR(1, "Send error in SessSetup = %d", rc); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3457 | } else { |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3458 | mutex_lock(&ses->server->srv_mutex); |
| 3459 | if (!server->session_estab) { |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3460 | server->session_key.response = ses->auth_key.response; |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3461 | server->session_key.len = ses->auth_key.len; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3462 | server->sequence_number = 0x2; |
| 3463 | server->session_estab = true; |
| 3464 | ses->auth_key.response = NULL; |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3465 | } |
| 3466 | mutex_unlock(&server->srv_mutex); |
| 3467 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3468 | cFYI(1, "CIFS Session Established successfully"); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3469 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3470 | ses->status = CifsGood; |
| 3471 | ses->need_reconnect = false; |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3472 | spin_unlock(&GlobalMid_Lock); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3473 | } |
| 3474 | |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3475 | kfree(ses->auth_key.response); |
| 3476 | ses->auth_key.response = NULL; |
| 3477 | ses->auth_key.len = 0; |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 3478 | kfree(ses->ntlmssp); |
| 3479 | ses->ntlmssp = NULL; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3481 | return rc; |
| 3482 | } |
| 3483 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3484 | static struct cifs_tcon * |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3485 | cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) |
| 3486 | { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3487 | struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb); |
| 3488 | struct cifs_ses *ses; |
| 3489 | struct cifs_tcon *tcon = NULL; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3490 | struct smb_vol *vol_info; |
Steve French | 34c8790 | 2011-03-01 05:02:57 +0000 | [diff] [blame] | 3491 | char username[28]; /* big enough for "krb50x" + hex of ULONG_MAX 6+16 */ |
| 3492 | /* We used to have this as MAX_USERNAME which is */ |
| 3493 | /* way too big now (256 instead of 32) */ |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3494 | |
| 3495 | vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL); |
| 3496 | if (vol_info == NULL) { |
| 3497 | tcon = ERR_PTR(-ENOMEM); |
| 3498 | goto out; |
| 3499 | } |
| 3500 | |
Steve French | ea1be1a | 2011-07-12 18:24:43 +0000 | [diff] [blame] | 3501 | snprintf(username, sizeof(username), "krb50x%x", fsuid); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3502 | vol_info->username = username; |
| 3503 | vol_info->local_nls = cifs_sb->local_nls; |
| 3504 | vol_info->linux_uid = fsuid; |
| 3505 | vol_info->cred_uid = fsuid; |
| 3506 | vol_info->UNC = master_tcon->treeName; |
| 3507 | vol_info->retry = master_tcon->retry; |
| 3508 | vol_info->nocase = master_tcon->nocase; |
| 3509 | vol_info->local_lease = master_tcon->local_lease; |
| 3510 | vol_info->no_linux_ext = !master_tcon->unix_ext; |
| 3511 | |
| 3512 | /* FIXME: allow for other secFlg settings */ |
| 3513 | vol_info->secFlg = CIFSSEC_MUST_KRB5; |
| 3514 | |
| 3515 | /* get a reference for the same TCP session */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 3516 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3517 | ++master_tcon->ses->server->srv_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 3518 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3519 | |
| 3520 | ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info); |
| 3521 | if (IS_ERR(ses)) { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3522 | tcon = (struct cifs_tcon *)ses; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3523 | cifs_put_tcp_session(master_tcon->ses->server); |
| 3524 | goto out; |
| 3525 | } |
| 3526 | |
| 3527 | tcon = cifs_get_tcon(ses, vol_info); |
| 3528 | if (IS_ERR(tcon)) { |
| 3529 | cifs_put_smb_ses(ses); |
| 3530 | goto out; |
| 3531 | } |
| 3532 | |
| 3533 | if (ses->capabilities & CAP_UNIX) |
| 3534 | reset_cifs_unix_caps(0, tcon, NULL, vol_info); |
| 3535 | out: |
| 3536 | kfree(vol_info); |
| 3537 | |
| 3538 | return tcon; |
| 3539 | } |
| 3540 | |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 3541 | struct cifs_tcon * |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3542 | cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb) |
| 3543 | { |
| 3544 | return tlink_tcon(cifs_sb_master_tlink(cifs_sb)); |
| 3545 | } |
| 3546 | |
| 3547 | static int |
| 3548 | cifs_sb_tcon_pending_wait(void *unused) |
| 3549 | { |
| 3550 | schedule(); |
| 3551 | return signal_pending(current) ? -ERESTARTSYS : 0; |
| 3552 | } |
| 3553 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3554 | /* find and return a tlink with given uid */ |
| 3555 | static struct tcon_link * |
| 3556 | tlink_rb_search(struct rb_root *root, uid_t uid) |
| 3557 | { |
| 3558 | struct rb_node *node = root->rb_node; |
| 3559 | struct tcon_link *tlink; |
| 3560 | |
| 3561 | while (node) { |
| 3562 | tlink = rb_entry(node, struct tcon_link, tl_rbnode); |
| 3563 | |
| 3564 | if (tlink->tl_uid > uid) |
| 3565 | node = node->rb_left; |
| 3566 | else if (tlink->tl_uid < uid) |
| 3567 | node = node->rb_right; |
| 3568 | else |
| 3569 | return tlink; |
| 3570 | } |
| 3571 | return NULL; |
| 3572 | } |
| 3573 | |
| 3574 | /* insert a tcon_link into the tree */ |
| 3575 | static void |
| 3576 | tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink) |
| 3577 | { |
| 3578 | struct rb_node **new = &(root->rb_node), *parent = NULL; |
| 3579 | struct tcon_link *tlink; |
| 3580 | |
| 3581 | while (*new) { |
| 3582 | tlink = rb_entry(*new, struct tcon_link, tl_rbnode); |
| 3583 | parent = *new; |
| 3584 | |
| 3585 | if (tlink->tl_uid > new_tlink->tl_uid) |
| 3586 | new = &((*new)->rb_left); |
| 3587 | else |
| 3588 | new = &((*new)->rb_right); |
| 3589 | } |
| 3590 | |
| 3591 | rb_link_node(&new_tlink->tl_rbnode, parent, new); |
| 3592 | rb_insert_color(&new_tlink->tl_rbnode, root); |
| 3593 | } |
| 3594 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3595 | /* |
| 3596 | * Find or construct an appropriate tcon given a cifs_sb and the fsuid of the |
| 3597 | * current task. |
| 3598 | * |
| 3599 | * If the superblock doesn't refer to a multiuser mount, then just return |
| 3600 | * the master tcon for the mount. |
| 3601 | * |
Suresh Jayaraman | 6ef933a | 2010-11-03 10:53:49 +0530 | [diff] [blame] | 3602 | * First, search the rbtree for an existing tcon for this fsuid. If one |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3603 | * exists, then check to see if it's pending construction. If it is then wait |
| 3604 | * for construction to complete. Once it's no longer pending, check to see if |
| 3605 | * it failed and either return an error or retry construction, depending on |
| 3606 | * the timeout. |
| 3607 | * |
| 3608 | * If one doesn't exist then insert a new tcon_link struct into the tree and |
| 3609 | * try to construct a new one. |
| 3610 | */ |
| 3611 | struct tcon_link * |
| 3612 | cifs_sb_tlink(struct cifs_sb_info *cifs_sb) |
| 3613 | { |
| 3614 | int ret; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3615 | uid_t fsuid = current_fsuid(); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3616 | struct tcon_link *tlink, *newtlink; |
| 3617 | |
| 3618 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) |
| 3619 | return cifs_get_tlink(cifs_sb_master_tlink(cifs_sb)); |
| 3620 | |
| 3621 | spin_lock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3622 | tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3623 | if (tlink) |
| 3624 | cifs_get_tlink(tlink); |
| 3625 | spin_unlock(&cifs_sb->tlink_tree_lock); |
| 3626 | |
| 3627 | if (tlink == NULL) { |
| 3628 | newtlink = kzalloc(sizeof(*tlink), GFP_KERNEL); |
| 3629 | if (newtlink == NULL) |
| 3630 | return ERR_PTR(-ENOMEM); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3631 | newtlink->tl_uid = fsuid; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3632 | newtlink->tl_tcon = ERR_PTR(-EACCES); |
| 3633 | set_bit(TCON_LINK_PENDING, &newtlink->tl_flags); |
| 3634 | set_bit(TCON_LINK_IN_TREE, &newtlink->tl_flags); |
| 3635 | cifs_get_tlink(newtlink); |
| 3636 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3637 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3638 | /* was one inserted after previous search? */ |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3639 | tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3640 | if (tlink) { |
| 3641 | cifs_get_tlink(tlink); |
| 3642 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3643 | kfree(newtlink); |
| 3644 | goto wait_for_construction; |
| 3645 | } |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3646 | tlink = newtlink; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3647 | tlink_rb_insert(&cifs_sb->tlink_tree, tlink); |
| 3648 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3649 | } else { |
| 3650 | wait_for_construction: |
| 3651 | ret = wait_on_bit(&tlink->tl_flags, TCON_LINK_PENDING, |
| 3652 | cifs_sb_tcon_pending_wait, |
| 3653 | TASK_INTERRUPTIBLE); |
| 3654 | if (ret) { |
| 3655 | cifs_put_tlink(tlink); |
| 3656 | return ERR_PTR(ret); |
| 3657 | } |
| 3658 | |
| 3659 | /* if it's good, return it */ |
| 3660 | if (!IS_ERR(tlink->tl_tcon)) |
| 3661 | return tlink; |
| 3662 | |
| 3663 | /* return error if we tried this already recently */ |
| 3664 | if (time_before(jiffies, tlink->tl_time + TLINK_ERROR_EXPIRE)) { |
| 3665 | cifs_put_tlink(tlink); |
| 3666 | return ERR_PTR(-EACCES); |
| 3667 | } |
| 3668 | |
| 3669 | if (test_and_set_bit(TCON_LINK_PENDING, &tlink->tl_flags)) |
| 3670 | goto wait_for_construction; |
| 3671 | } |
| 3672 | |
| 3673 | tlink->tl_tcon = cifs_construct_tcon(cifs_sb, fsuid); |
| 3674 | clear_bit(TCON_LINK_PENDING, &tlink->tl_flags); |
| 3675 | wake_up_bit(&tlink->tl_flags, TCON_LINK_PENDING); |
| 3676 | |
| 3677 | if (IS_ERR(tlink->tl_tcon)) { |
| 3678 | cifs_put_tlink(tlink); |
| 3679 | return ERR_PTR(-EACCES); |
| 3680 | } |
| 3681 | |
| 3682 | return tlink; |
| 3683 | } |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3684 | |
| 3685 | /* |
| 3686 | * periodic workqueue job that scans tcon_tree for a superblock and closes |
| 3687 | * out tcons. |
| 3688 | */ |
| 3689 | static void |
| 3690 | cifs_prune_tlinks(struct work_struct *work) |
| 3691 | { |
| 3692 | struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info, |
| 3693 | prune_tlinks.work); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3694 | struct rb_root *root = &cifs_sb->tlink_tree; |
| 3695 | struct rb_node *node = rb_first(root); |
| 3696 | struct rb_node *tmp; |
| 3697 | struct tcon_link *tlink; |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3698 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3699 | /* |
| 3700 | * Because we drop the spinlock in the loop in order to put the tlink |
| 3701 | * it's not guarded against removal of links from the tree. The only |
| 3702 | * places that remove entries from the tree are this function and |
| 3703 | * umounts. Because this function is non-reentrant and is canceled |
| 3704 | * before umount can proceed, this is safe. |
| 3705 | */ |
| 3706 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3707 | node = rb_first(root); |
| 3708 | while (node != NULL) { |
| 3709 | tmp = node; |
| 3710 | node = rb_next(tmp); |
| 3711 | tlink = rb_entry(tmp, struct tcon_link, tl_rbnode); |
| 3712 | |
| 3713 | if (test_bit(TCON_LINK_MASTER, &tlink->tl_flags) || |
| 3714 | atomic_read(&tlink->tl_count) != 0 || |
| 3715 | time_after(tlink->tl_time + TLINK_IDLE_EXPIRE, jiffies)) |
| 3716 | continue; |
| 3717 | |
| 3718 | cifs_get_tlink(tlink); |
| 3719 | clear_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 3720 | rb_erase(tmp, root); |
| 3721 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3722 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3723 | cifs_put_tlink(tlink); |
| 3724 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3725 | } |
| 3726 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3727 | |
| 3728 | queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, |
| 3729 | TLINK_IDLE_EXPIRE); |
| 3730 | } |