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 | |
| 60 | struct smb_vol { |
| 61 | char *username; |
| 62 | char *password; |
| 63 | char *domainname; |
| 64 | char *UNC; |
| 65 | char *UNCip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | char *iocharset; /* local code page for mapping to and from Unicode */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 67 | char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ |
| 68 | char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 69 | uid_t cred_uid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | uid_t linux_uid; |
| 71 | gid_t linux_gid; |
| 72 | mode_t file_mode; |
| 73 | mode_t dir_mode; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 74 | unsigned secFlg; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 75 | bool retry:1; |
| 76 | bool intr:1; |
| 77 | bool setuids:1; |
| 78 | bool override_uid:1; |
| 79 | bool override_gid:1; |
Jeff Layton | d0a9c07 | 2008-05-12 22:23:49 +0000 | [diff] [blame] | 80 | bool dynperm:1; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 81 | bool noperm:1; |
| 82 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ |
| 83 | bool cifs_acl:1; |
| 84 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
| 85 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ |
| 86 | bool direct_io:1; |
Pavel Shilovsky | d39454f | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 87 | bool strict_io:1; /* strict cache behavior */ |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 88 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
| 89 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 90 | bool no_linux_ext:1; |
| 91 | bool sfu_emul:1; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 92 | bool nullauth:1; /* attempt to authenticate with null user */ |
| 93 | bool nocase:1; /* request case insensitive filenames */ |
| 94 | bool nobrl:1; /* disable sending byte range locks to srv */ |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 95 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 96 | bool seal:1; /* request transport encryption on share */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 97 | bool nodfs:1; /* Do not request DFS, even if available */ |
| 98 | bool local_lease:1; /* check leases only on local system, not remote */ |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 99 | bool noblocksnd:1; |
| 100 | bool noautotune:1; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 101 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 102 | bool fsc:1; /* enable fscache */ |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 103 | bool mfsymlinks:1; /* use Minshall+French Symlinks */ |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 104 | bool multiuser:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | unsigned int rsize; |
| 106 | unsigned int wsize; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 107 | bool sockopt_tcp_nodelay:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | unsigned short int port; |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 109 | unsigned long actimeo; /* attribute cache timeout (jiffies) */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 110 | char *prepath; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 111 | struct sockaddr_storage srcaddr; /* allow binding to a local IP */ |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 112 | struct nls_table *local_nls; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | }; |
| 114 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 115 | /* FIXME: should these be tunable? */ |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 116 | #define TLINK_ERROR_EXPIRE (1 * HZ) |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 117 | #define TLINK_IDLE_EXPIRE (600 * HZ) |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 118 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 119 | static int ip_connect(struct TCP_Server_Info *server); |
| 120 | static int generic_ip_connect(struct TCP_Server_Info *server); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 121 | 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] | 122 | static void cifs_prune_tlinks(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 124 | /* |
| 125 | * cifs tcp session reconnection |
| 126 | * |
| 127 | * mark tcp session as reconnecting so temporarily locked |
| 128 | * mark all smb sessions as reconnecting for tcp session |
| 129 | * reconnect tcp session |
| 130 | * wake up waiters on reconnection? - (not needed currently) |
| 131 | */ |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 132 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | cifs_reconnect(struct TCP_Server_Info *server) |
| 134 | { |
| 135 | int rc = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 136 | struct list_head *tmp, *tmp2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | struct cifsSesInfo *ses; |
| 138 | struct cifsTconInfo *tcon; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 139 | struct mid_q_entry *mid_entry; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 142 | if (server->tcpStatus == CifsExiting) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 143 | /* the demux thread will exit normally |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | next time through the loop */ |
| 145 | spin_unlock(&GlobalMid_Lock); |
| 146 | return rc; |
| 147 | } else |
| 148 | server->tcpStatus = CifsNeedReconnect; |
| 149 | spin_unlock(&GlobalMid_Lock); |
| 150 | server->maxBuf = 0; |
| 151 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 152 | cFYI(1, "Reconnecting tcp session"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
| 154 | /* before reconnecting the tcp session, mark the smb session (uid) |
| 155 | and the tid bad so they are not used until reconnected */ |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 156 | cFYI(1, "%s: marking sessions and tcons for reconnect", __func__); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 157 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 158 | list_for_each(tmp, &server->smb_ses_list) { |
| 159 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); |
| 160 | ses->need_reconnect = true; |
| 161 | ses->ipc_tid = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 162 | list_for_each(tmp2, &ses->tcon_list) { |
| 163 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); |
| 164 | tcon->need_reconnect = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 167 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* 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] | 170 | cFYI(1, "%s: tearing down socket", __func__); |
Jeff Layton | 72ca545 | 2008-12-01 07:09:36 -0500 | [diff] [blame] | 171 | mutex_lock(&server->srv_mutex); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 172 | if (server->ssocket) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 173 | cFYI(1, "State: 0x%x Flags: 0x%lx", server->ssocket->state, |
| 174 | server->ssocket->flags); |
Trond Myklebust | 91cf45f | 2007-11-12 18:10:39 -0800 | [diff] [blame] | 175 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 176 | cFYI(1, "Post shutdown state: 0x%x Flags: 0x%lx", |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 177 | server->ssocket->state, |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 178 | server->ssocket->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | sock_release(server->ssocket); |
| 180 | server->ssocket = NULL; |
| 181 | } |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 182 | server->sequence_number = 0; |
| 183 | server->session_estab = false; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 184 | kfree(server->session_key.response); |
| 185 | server->session_key.response = NULL; |
| 186 | server->session_key.len = 0; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 187 | server->lstrp = jiffies; |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 188 | mutex_unlock(&server->srv_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 190 | /* mark submitted MIDs for retry and issue callback */ |
| 191 | cFYI(1, "%s: issuing mid callbacks", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 193 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
| 194 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 195 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) |
Steve French | ad8b15f | 2008-08-08 21:10:16 +0000 | [diff] [blame] | 196 | mid_entry->midState = MID_RETRY_NEEDED; |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 197 | list_del_init(&mid_entry->qhead); |
| 198 | mid_entry->callback(mid_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | spin_unlock(&GlobalMid_Lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 202 | while ((server->tcpStatus != CifsExiting) && |
| 203 | (server->tcpStatus != CifsGood)) { |
Steve French | 6c3d890 | 2006-07-31 22:46:20 +0000 | [diff] [blame] | 204 | try_to_freeze(); |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 205 | |
| 206 | /* we should try only the port we connected to before */ |
| 207 | rc = generic_ip_connect(server); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 208 | if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 209 | cFYI(1, "reconnect error %d", rc); |
Steve French | 0cb766a | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 210 | msleep(3000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } else { |
| 212 | atomic_inc(&tcpSesReconnectCount); |
| 213 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 214 | if (server->tcpStatus != CifsExiting) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | server->tcpStatus = CifsGood; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 216 | spin_unlock(&GlobalMid_Lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
| 218 | } |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | return rc; |
| 221 | } |
| 222 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 223 | /* |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 224 | return codes: |
| 225 | 0 not a transact2, or all data present |
| 226 | >0 transact2 with that much data missing |
| 227 | -EINVAL = invalid transact2 |
| 228 | |
| 229 | */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 230 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 231 | { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 232 | struct smb_t2_rsp *pSMBt; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 233 | int remaining; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 234 | __u16 total_data_size, data_in_this_rsp; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 235 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 236 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 237 | return 0; |
| 238 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 239 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
| 240 | /* check for parm and data offset going beyond end of smb */ |
| 241 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 242 | cFYI(1, "invalid transact2 word count"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 243 | return -EINVAL; |
| 244 | } |
| 245 | |
| 246 | pSMBt = (struct smb_t2_rsp *)pSMB; |
| 247 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 248 | total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); |
| 249 | data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 250 | |
| 251 | remaining = total_data_size - data_in_this_rsp; |
| 252 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 253 | if (remaining == 0) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 254 | return 0; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 255 | else if (remaining < 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 256 | cFYI(1, "total data %d smaller than data in frame %d", |
| 257 | total_data_size, data_in_this_rsp); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 258 | return -EINVAL; |
| 259 | } else { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 260 | cFYI(1, "missing %d bytes from transact2, check next response", |
| 261 | remaining); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 262 | if (total_data_size > maxBufSize) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 263 | cERROR(1, "TotalDataSize %d is over maximum buffer %d", |
| 264 | total_data_size, maxBufSize); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 265 | return -EINVAL; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 266 | } |
| 267 | return remaining; |
| 268 | } |
| 269 | } |
| 270 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 271 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 272 | { |
| 273 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; |
| 274 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 275 | char *data_area_of_target; |
| 276 | char *data_area_of_buf2; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 277 | int remaining; |
| 278 | __u16 byte_count, total_data_size, total_in_buf, total_in_buf2; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 279 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 280 | total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 281 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 282 | if (total_data_size != |
| 283 | get_unaligned_le16(&pSMB2->t2_rsp.TotalDataCount)) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 284 | cFYI(1, "total data size of primary and secondary t2 differ"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 285 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 286 | total_in_buf = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 287 | |
| 288 | remaining = total_data_size - total_in_buf; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 289 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 290 | if (remaining < 0) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 291 | return -EINVAL; |
| 292 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 293 | if (remaining == 0) /* nothing to do, ignore */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 294 | return 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 295 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 296 | total_in_buf2 = get_unaligned_le16(&pSMB2->t2_rsp.DataCount); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 297 | if (remaining < total_in_buf2) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 298 | cFYI(1, "transact2 2nd response contains too much data"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | /* find end of first SMB data area */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 302 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 303 | get_unaligned_le16(&pSMBt->t2_rsp.DataOffset); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 304 | /* validate target area */ |
| 305 | |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 306 | data_area_of_buf2 = (char *)&pSMB2->hdr.Protocol + |
| 307 | get_unaligned_le16(&pSMB2->t2_rsp.DataOffset); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 308 | |
| 309 | data_area_of_target += total_in_buf; |
| 310 | |
| 311 | /* copy second buffer into end of first buffer */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 312 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 313 | total_in_buf += total_in_buf2; |
Jeff Layton | 26ec254 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 314 | put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount); |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 315 | byte_count = get_bcc_le(pTargetSMB); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 316 | byte_count += total_in_buf2; |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 317 | put_bcc_le(byte_count, pTargetSMB); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 318 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 319 | byte_count = pTargetSMB->smb_buf_length; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 320 | byte_count += total_in_buf2; |
| 321 | |
| 322 | /* BB also add check that we are not beyond maximum buffer size */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 323 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 324 | pTargetSMB->smb_buf_length = byte_count; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 325 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 326 | if (remaining == total_in_buf2) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 327 | cFYI(1, "found the last secondary response"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 328 | return 0; /* we are done */ |
| 329 | } else /* more responses to go */ |
| 330 | return 1; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 333 | static void |
| 334 | cifs_echo_request(struct work_struct *work) |
| 335 | { |
| 336 | int rc; |
| 337 | struct TCP_Server_Info *server = container_of(work, |
| 338 | struct TCP_Server_Info, echo.work); |
| 339 | |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 340 | /* |
Jeff Layton | 195291e | 2011-02-09 12:01:42 -0500 | [diff] [blame] | 341 | * We cannot send an echo until the NEGOTIATE_PROTOCOL request is |
| 342 | * done, which is indicated by maxBuf != 0. Also, no need to ping if |
| 343 | * we got a response recently |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 344 | */ |
Jeff Layton | 195291e | 2011-02-09 12:01:42 -0500 | [diff] [blame] | 345 | if (server->maxBuf == 0 || |
Jeff Layton | 247ec9b | 2011-02-04 17:09:50 -0500 | [diff] [blame] | 346 | time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ)) |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 347 | goto requeue_echo; |
| 348 | |
| 349 | rc = CIFSSMBEcho(server); |
| 350 | if (rc) |
| 351 | cFYI(1, "Unable to send echo request to server: %s", |
| 352 | server->hostname); |
| 353 | |
| 354 | requeue_echo: |
| 355 | queue_delayed_work(system_nrt_wq, &server->echo, SMB_ECHO_INTERVAL); |
| 356 | } |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | static int |
| 359 | cifs_demultiplex_thread(struct TCP_Server_Info *server) |
| 360 | { |
| 361 | int length; |
| 362 | unsigned int pdu_length, total_read; |
| 363 | struct smb_hdr *smb_buffer = NULL; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 364 | struct smb_hdr *bigbuf = NULL; |
| 365 | struct smb_hdr *smallbuf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | struct msghdr smb_msg; |
| 367 | struct kvec iov; |
| 368 | struct socket *csocket = server->ssocket; |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 369 | struct list_head *tmp, *tmp2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | struct task_struct *task_to_wake = NULL; |
| 371 | struct mid_q_entry *mid_entry; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 372 | char temp; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 373 | bool isLargeBuf = false; |
| 374 | bool isMultiRsp; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 375 | int reconnect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | current->flags |= PF_MEMALLOC; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 378 | cFYI(1, "Demultiplex PID: %d", task_pid_nr(current)); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 379 | |
| 380 | length = atomic_inc_return(&tcpSesAllocCount); |
| 381 | if (length > 1) |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 382 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 383 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Rafael J. Wysocki | 8314418 | 2007-07-17 04:03:35 -0700 | [diff] [blame] | 385 | set_freezable(); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 386 | while (server->tcpStatus != CifsExiting) { |
Steve French | ede1327 | 2005-08-30 20:10:14 -0700 | [diff] [blame] | 387 | if (try_to_freeze()) |
| 388 | continue; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 389 | if (bigbuf == NULL) { |
| 390 | bigbuf = cifs_buf_get(); |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 391 | if (!bigbuf) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 392 | cERROR(1, "No memory for large SMB response"); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 393 | msleep(3000); |
| 394 | /* retry will check if exiting */ |
| 395 | continue; |
| 396 | } |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 397 | } else if (isLargeBuf) { |
| 398 | /* we are reusing a dirty large buf, clear its start */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 399 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | } |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 401 | |
| 402 | if (smallbuf == NULL) { |
| 403 | smallbuf = cifs_small_buf_get(); |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 404 | if (!smallbuf) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 405 | cERROR(1, "No memory for SMB response"); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 406 | msleep(1000); |
| 407 | /* retry will check if exiting */ |
| 408 | continue; |
| 409 | } |
| 410 | /* beginning of smb buffer is cleared in our buf_get */ |
| 411 | } else /* if existing small buf clear beginning */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 412 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 413 | |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 414 | isLargeBuf = false; |
| 415 | isMultiRsp = false; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 416 | smb_buffer = smallbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | iov.iov_base = smb_buffer; |
| 418 | iov.iov_len = 4; |
| 419 | smb_msg.msg_control = NULL; |
| 420 | smb_msg.msg_controllen = 0; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 421 | pdu_length = 4; /* enough to get RFC1001 header */ |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 422 | |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 423 | incomplete_rcv: |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 424 | if (echo_retries > 0 && |
| 425 | time_after(jiffies, server->lstrp + |
| 426 | (echo_retries * SMB_ECHO_INTERVAL))) { |
| 427 | cERROR(1, "Server %s has not responded in %d seconds. " |
| 428 | "Reconnecting...", server->hostname, |
| 429 | (echo_retries * SMB_ECHO_INTERVAL / HZ)); |
| 430 | cifs_reconnect(server); |
| 431 | csocket = server->ssocket; |
| 432 | wake_up(&server->response_q); |
| 433 | continue; |
| 434 | } |
| 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | length = |
| 437 | kernel_recvmsg(csocket, &smb_msg, |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 438 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 440 | if (server->tcpStatus == CifsExiting) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | break; |
| 442 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 443 | cFYI(1, "Reconnect after server stopped responding"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | cifs_reconnect(server); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 445 | cFYI(1, "call to reconnect done"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | csocket = server->ssocket; |
| 447 | continue; |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 448 | } else if (length == -ERESTARTSYS || |
| 449 | length == -EAGAIN || |
| 450 | length == -EINTR) { |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 451 | msleep(1); /* minimum sleep to prevent looping |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | allowing socket to clear and app threads to set |
| 453 | tcpStatus CifsNeedReconnect if server hung */ |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 454 | if (pdu_length < 4) { |
| 455 | iov.iov_base = (4 - pdu_length) + |
| 456 | (char *)smb_buffer; |
| 457 | iov.iov_len = pdu_length; |
| 458 | smb_msg.msg_control = NULL; |
| 459 | smb_msg.msg_controllen = 0; |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 460 | goto incomplete_rcv; |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 461 | } else |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 462 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } else if (length <= 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 464 | cFYI(1, "Reconnect after unexpected peek error %d", |
| 465 | length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | cifs_reconnect(server); |
| 467 | csocket = server->ssocket; |
| 468 | wake_up(&server->response_q); |
| 469 | continue; |
Petr Tesarik | 2a97468 | 2007-11-20 02:24:08 +0000 | [diff] [blame] | 470 | } else if (length < pdu_length) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 471 | cFYI(1, "requested %d bytes but only got %d bytes", |
| 472 | pdu_length, length); |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 473 | pdu_length -= length; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 474 | msleep(1); |
| 475 | goto incomplete_rcv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
Steve French | 67010fb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 477 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 478 | /* The right amount was read from socket - 4 bytes */ |
| 479 | /* so we can now interpret the length field */ |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 480 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 481 | /* the first byte big endian of the length field, |
| 482 | is actually not part of the length but the type |
| 483 | with the most common, zero, as regular data */ |
| 484 | temp = *((char *) smb_buffer); |
| 485 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 486 | /* Note that FC 1001 length is big endian on the wire, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 487 | but we convert it here so it is always manipulated |
| 488 | as host byte order */ |
Harvey Harrison | 5ca33c6 | 2008-07-23 17:45:58 -0700 | [diff] [blame] | 489 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 490 | smb_buffer->smb_buf_length = pdu_length; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 491 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 492 | cFYI(1, "rfc1002 length 0x%x", pdu_length+4); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 493 | |
| 494 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 495 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 496 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 497 | cFYI(1, "Good RFC 1002 session rsp"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 498 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 499 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 500 | /* we get this from Windows 98 instead of |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 501 | an error on SMB negprot response */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 502 | cFYI(1, "Negative RFC1002 Session Response Error 0x%x)", |
| 503 | pdu_length); |
Jeff Layton | 7332f2a | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 504 | /* give server a second to clean up */ |
| 505 | msleep(1000); |
| 506 | /* always try 445 first on reconnect since we get NACK |
| 507 | * on some if we ever connected to port 139 (the NACK |
| 508 | * is since we do not begin with RFC1001 session |
| 509 | * initialize frame) |
| 510 | */ |
Jeff Layton | 3267039 | 2010-09-03 12:00:50 -0400 | [diff] [blame] | 511 | cifs_set_port((struct sockaddr *) |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 512 | &server->dstaddr, CIFS_PORT); |
Jeff Layton | 7332f2a | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 513 | cifs_reconnect(server); |
| 514 | csocket = server->ssocket; |
| 515 | wake_up(&server->response_q); |
| 516 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 517 | } else if (temp != (char) 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 518 | cERROR(1, "Unknown RFC 1002 frame"); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 519 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
| 520 | length); |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 521 | cifs_reconnect(server); |
| 522 | csocket = server->ssocket; |
| 523 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | /* else we have an SMB response */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 527 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 528 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 529 | cERROR(1, "Invalid size SMB length %d pdu_length %d", |
| 530 | length, pdu_length+4); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 531 | cifs_reconnect(server); |
| 532 | csocket = server->ssocket; |
| 533 | wake_up(&server->response_q); |
| 534 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 535 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 536 | |
| 537 | /* else length ok */ |
| 538 | reconnect = 0; |
| 539 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 540 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 541 | isLargeBuf = true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 542 | memcpy(bigbuf, smallbuf, 4); |
| 543 | smb_buffer = bigbuf; |
| 544 | } |
| 545 | length = 0; |
| 546 | iov.iov_base = 4 + (char *)smb_buffer; |
| 547 | iov.iov_len = pdu_length; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 548 | for (total_read = 0; total_read < pdu_length; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 549 | total_read += length) { |
| 550 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, |
| 551 | pdu_length - total_read, 0); |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 552 | if (server->tcpStatus == CifsExiting) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 553 | /* then will exit */ |
| 554 | reconnect = 2; |
| 555 | break; |
| 556 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 557 | cifs_reconnect(server); |
| 558 | csocket = server->ssocket; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 559 | /* Reconnect wakes up rspns q */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 560 | /* Now we will reread sock */ |
| 561 | reconnect = 1; |
| 562 | break; |
Jeff Layton | 522bbe6 | 2010-09-03 12:00:49 -0400 | [diff] [blame] | 563 | } else if (length == -ERESTARTSYS || |
| 564 | length == -EAGAIN || |
| 565 | length == -EINTR) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 566 | msleep(1); /* minimum sleep to prevent looping, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 567 | allowing socket to clear and app |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 568 | threads to set tcpStatus |
| 569 | CifsNeedReconnect if server hung*/ |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 570 | length = 0; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 571 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 572 | } else if (length <= 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 573 | cERROR(1, "Received no data, expecting %d", |
| 574 | pdu_length - total_read); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 575 | cifs_reconnect(server); |
| 576 | csocket = server->ssocket; |
| 577 | reconnect = 1; |
| 578 | break; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 579 | } |
| 580 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 581 | if (reconnect == 2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 582 | break; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 583 | else if (reconnect == 1) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 584 | continue; |
| 585 | |
Jeff Layton | 9587fcf | 2011-02-01 08:40:43 -0500 | [diff] [blame] | 586 | total_read += 4; /* account for rfc1002 hdr */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 587 | |
Jeff Layton | 9587fcf | 2011-02-01 08:40:43 -0500 | [diff] [blame] | 588 | dump_smb(smb_buffer, total_read); |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 589 | |
| 590 | /* |
| 591 | * We know that we received enough to get to the MID as we |
| 592 | * checked the pdu_length earlier. Now check to see |
| 593 | * if the rest of the header is OK. We borrow the length |
| 594 | * var for the rest of the loop to avoid a new stack var. |
| 595 | * |
| 596 | * 48 bytes is enough to display the header and a little bit |
| 597 | * into the payload for debugging purposes. |
| 598 | */ |
| 599 | length = checkSMB(smb_buffer, smb_buffer->Mid, total_read); |
| 600 | if (length != 0) |
Jeff Layton | 9587fcf | 2011-02-01 08:40:43 -0500 | [diff] [blame] | 601 | cifs_dump_mem("Bad SMB: ", smb_buffer, |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 602 | min_t(unsigned int, total_read, 48)); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 603 | |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 604 | mid_entry = NULL; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 605 | server->lstrp = jiffies; |
| 606 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 607 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 608 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 609 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 610 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 611 | if ((mid_entry->mid == smb_buffer->Mid) && |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 612 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
| 613 | (mid_entry->command == smb_buffer->Command)) { |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 614 | if (length == 0 && |
| 615 | check2ndT2(smb_buffer, server->maxBuf) > 0) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 616 | /* We have a multipart transact2 resp */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 617 | isMultiRsp = true; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 618 | if (mid_entry->resp_buf) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 619 | /* merge response - fix up 1st*/ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 620 | if (coalesce_t2(smb_buffer, |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 621 | mid_entry->resp_buf)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 622 | mid_entry->multiRsp = |
| 623 | true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 624 | break; |
| 625 | } else { |
| 626 | /* all parts received */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 627 | mid_entry->multiEnd = |
| 628 | true; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 629 | goto multi_t2_fnd; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 630 | } |
| 631 | } else { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 632 | if (!isLargeBuf) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 633 | cERROR(1, "1st trans2 resp needs bigbuf"); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 634 | /* BB maybe we can fix this up, switch |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 635 | to already allocated large buffer? */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 636 | } else { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 637 | /* Have first buffer */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 638 | mid_entry->resp_buf = |
| 639 | smb_buffer; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 640 | mid_entry->largeBuf = |
| 641 | true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 642 | bigbuf = NULL; |
| 643 | } |
| 644 | } |
| 645 | break; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 646 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 647 | mid_entry->resp_buf = smb_buffer; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 648 | mid_entry->largeBuf = isLargeBuf; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 649 | multi_t2_fnd: |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 650 | if (length == 0) |
| 651 | mid_entry->midState = |
| 652 | MID_RESPONSE_RECEIVED; |
| 653 | else |
| 654 | mid_entry->midState = |
| 655 | MID_RESPONSE_MALFORMED; |
Steve French | 1047abc | 2005-10-11 19:58:06 -0700 | [diff] [blame] | 656 | #ifdef CONFIG_CIFS_STATS2 |
| 657 | mid_entry->when_received = jiffies; |
| 658 | #endif |
Shirish Pargaonkar | 64474bd | 2011-02-03 14:31:18 -0600 | [diff] [blame] | 659 | list_del_init(&mid_entry->qhead); |
| 660 | mid_entry->callback(mid_entry); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 661 | break; |
| 662 | } |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 663 | mid_entry = NULL; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 664 | } |
| 665 | spin_unlock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 666 | |
| 667 | if (mid_entry != NULL) { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 668 | /* Was previous buf put in mpx struct for multi-rsp? */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 669 | if (!isMultiRsp) { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 670 | /* smb buffer will be freed by user thread */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 671 | if (isLargeBuf) |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 672 | bigbuf = NULL; |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 673 | else |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 674 | smallbuf = NULL; |
| 675 | } |
Jeff Layton | 71823ba | 2011-02-10 08:03:50 -0500 | [diff] [blame] | 676 | } else if (length != 0) { |
| 677 | /* response sanity checks failed */ |
| 678 | continue; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 679 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
| 680 | !isMultiRsp) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 681 | cERROR(1, "No task to wake, unknown frame received! " |
Jeff Layton | 8097531 | 2011-01-11 07:24:02 -0500 | [diff] [blame] | 682 | "NumMids %d", atomic_read(&midCount)); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 683 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 684 | sizeof(struct smb_hdr)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 685 | #ifdef CONFIG_CIFS_DEBUG2 |
| 686 | cifs_dump_detail(smb_buffer); |
| 687 | cifs_dump_mids(server); |
| 688 | #endif /* CIFS_DEBUG2 */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 689 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 690 | } |
| 691 | } /* end while !EXITING */ |
| 692 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 693 | /* take it off the list, if it's not already */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 694 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 695 | list_del_init(&server->tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 696 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | spin_lock(&GlobalMid_Lock); |
| 699 | server->tcpStatus = CifsExiting; |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 700 | spin_unlock(&GlobalMid_Lock); |
Steve French | dbdbb87 | 2008-06-10 21:21:56 +0000 | [diff] [blame] | 701 | wake_up_all(&server->response_q); |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 702 | |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 703 | /* check if we have blocked requests that need to free */ |
| 704 | /* Note that cifs_max_pending is normally 50, but |
| 705 | can be set at module install time to as little as two */ |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 706 | spin_lock(&GlobalMid_Lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 707 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 708 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
| 709 | /* We do not want to set the max_pending too low or we |
| 710 | could end up with the counter going negative */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | spin_unlock(&GlobalMid_Lock); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 712 | /* Although there should not be any requests blocked on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | 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] | 714 | 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] | 715 | to the same server - they now will see the session is in exit state |
| 716 | and get out of SendReceive. */ |
| 717 | wake_up_all(&server->request_q); |
| 718 | /* give those requests time to exit */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 719 | msleep(125); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 720 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 721 | if (server->ssocket) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | sock_release(csocket); |
| 723 | server->ssocket = NULL; |
| 724 | } |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 725 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
Mariusz Kozlowski | a8a11d3 | 2007-10-03 16:41:24 +0000 | [diff] [blame] | 726 | cifs_buf_release(bigbuf); |
| 727 | if (smallbuf) /* no sense logging a debug message if NULL */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 728 | cifs_small_buf_release(smallbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
Jeff Layton | 9d78315 | 2011-01-11 07:24:01 -0500 | [diff] [blame] | 730 | if (!list_empty(&server->pending_mid_q)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 732 | list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { |
Jeff Layton | 9d78315 | 2011-01-11 07:24:01 -0500 | [diff] [blame] | 733 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
Jeff Layton | 2b84a36c | 2011-01-11 07:24:21 -0500 | [diff] [blame] | 734 | cFYI(1, "Clearing Mid 0x%x - issuing callback", |
| 735 | mid_entry->mid); |
| 736 | list_del_init(&mid_entry->qhead); |
| 737 | mid_entry->callback(mid_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | } |
| 739 | spin_unlock(&GlobalMid_Lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | /* 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] | 741 | msleep(125); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | } |
| 743 | |
Steve French | f191401 | 2005-08-18 09:37:34 -0700 | [diff] [blame] | 744 | if (!list_empty(&server->pending_mid_q)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 745 | /* mpx threads have not exited yet give them |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | at least the smb send timeout time for long ops */ |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 747 | /* due to delays on oplock break requests, we need |
| 748 | to wait at least 45 seconds before giving up |
| 749 | on a request getting a response and going ahead |
| 750 | and killing cifsd */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 751 | cFYI(1, "Wait for exit from demultiplex thread"); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 752 | msleep(46000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | /* if threads still have not exited they are probably never |
| 754 | coming home not much else we can do but free the memory */ |
| 755 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 757 | kfree(server->hostname); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 758 | task_to_wake = xchg(&server->tsk, NULL); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 759 | kfree(server); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 760 | |
| 761 | length = atomic_dec_return(&tcpSesAllocCount); |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 762 | if (length > 0) |
| 763 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 764 | GFP_KERNEL); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 765 | |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 766 | /* if server->tsk was NULL then wait for a signal before exiting */ |
| 767 | if (!task_to_wake) { |
| 768 | set_current_state(TASK_INTERRUPTIBLE); |
| 769 | while (!signal_pending(current)) { |
| 770 | schedule(); |
| 771 | set_current_state(TASK_INTERRUPTIBLE); |
| 772 | } |
| 773 | set_current_state(TASK_RUNNING); |
| 774 | } |
| 775 | |
Jeff Layton | 0468a2c | 2008-12-01 07:09:35 -0500 | [diff] [blame] | 776 | module_put_and_exit(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
| 778 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 779 | /* extract the host portion of the UNC string */ |
| 780 | static char * |
| 781 | extract_hostname(const char *unc) |
| 782 | { |
| 783 | const char *src; |
| 784 | char *dst, *delim; |
| 785 | unsigned int len; |
| 786 | |
| 787 | /* skip double chars at beginning of string */ |
| 788 | /* BB: check validity of these bytes? */ |
| 789 | src = unc + 2; |
| 790 | |
| 791 | /* delimiter between hostname and sharename is always '\\' now */ |
| 792 | delim = strchr(src, '\\'); |
| 793 | if (!delim) |
| 794 | return ERR_PTR(-EINVAL); |
| 795 | |
| 796 | len = delim - src; |
| 797 | dst = kmalloc((len + 1), GFP_KERNEL); |
| 798 | if (dst == NULL) |
| 799 | return ERR_PTR(-ENOMEM); |
| 800 | |
| 801 | memcpy(dst, src, len); |
| 802 | dst[len] = '\0'; |
| 803 | |
| 804 | return dst; |
| 805 | } |
| 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | static int |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 808 | cifs_parse_mount_options(char *options, const char *devname, |
| 809 | struct smb_vol *vol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
| 811 | char *value; |
| 812 | char *data; |
| 813 | unsigned int temp_len, i, j; |
| 814 | char separator[2]; |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 815 | short int override_uid = -1; |
| 816 | short int override_gid = -1; |
| 817 | bool uid_specified = false; |
| 818 | bool gid_specified = false; |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 819 | char *nodename = utsname()->nodename; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
| 821 | separator[0] = ','; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 822 | separator[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 824 | /* |
| 825 | * does not have to be perfect mapping since field is |
| 826 | * informational, only used for servers that do not support |
| 827 | * port 445 and it can be overridden at mount time |
| 828 | */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 829 | memset(vol->source_rfc1001_name, 0x20, RFC1001_NAME_LEN); |
| 830 | for (i = 0; i < strnlen(nodename, RFC1001_NAME_LEN); i++) |
Jeff Layton | 8846399 | 2010-11-22 15:31:03 -0500 | [diff] [blame] | 831 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
| 832 | |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 833 | vol->source_rfc1001_name[RFC1001_NAME_LEN] = 0; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 834 | /* null target name indicates to use *SMBSERVR default called name |
| 835 | if we end up sending RFC1001 session initialize */ |
| 836 | vol->target_rfc1001_name[0] = 0; |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 837 | vol->cred_uid = current_uid(); |
| 838 | vol->linux_uid = current_uid(); |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 839 | vol->linux_gid = current_gid(); |
Jeff Layton | f55ed1a | 2009-05-26 16:28:11 -0400 | [diff] [blame] | 840 | |
| 841 | /* default to only allowing write access to owner of the mount */ |
| 842 | vol->dir_mode = vol->file_mode = S_IRUGO | S_IXUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
| 844 | /* 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] | 845 | /* default is always to request posix paths. */ |
| 846 | vol->posix_paths = 1; |
Jeff Layton | a0c9217 | 2009-05-27 15:40:47 -0400 | [diff] [blame] | 847 | /* default to using server inode numbers where available */ |
| 848 | vol->server_ino = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 849 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 850 | vol->actimeo = CIFS_DEF_ACTIMEO; |
| 851 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | if (!options) |
| 853 | return 1; |
| 854 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 855 | if (strncmp(options, "sep=", 4) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 856 | if (options[4] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | separator[0] = options[4]; |
| 858 | options += 5; |
| 859 | } else { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 860 | cFYI(1, "Null separator not allowed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | } |
| 862 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | while ((data = strsep(&options, separator)) != NULL) { |
| 865 | if (!*data) |
| 866 | continue; |
| 867 | if ((value = strchr(data, '=')) != NULL) |
| 868 | *value++ = '\0'; |
| 869 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 870 | /* Have to parse this before we parse for "user" */ |
| 871 | if (strnicmp(data, "user_xattr", 10) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | vol->no_xattr = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 873 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | vol->no_xattr = 1; |
| 875 | } else if (strnicmp(data, "user", 4) == 0) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 876 | if (!value) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | printk(KERN_WARNING |
| 878 | "CIFS: invalid or missing username\n"); |
| 879 | return 1; /* needs_arg; */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 880 | } else if (!*value) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 881 | /* null user, ie anonymous, authentication */ |
| 882 | vol->nullauth = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | } |
| 884 | if (strnlen(value, 200) < 200) { |
| 885 | vol->username = value; |
| 886 | } else { |
| 887 | printk(KERN_WARNING "CIFS: username too long\n"); |
| 888 | return 1; |
| 889 | } |
| 890 | } else if (strnicmp(data, "pass", 4) == 0) { |
| 891 | if (!value) { |
| 892 | vol->password = NULL; |
| 893 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 894 | } else if (value[0] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | /* check if string begins with double comma |
| 896 | since that would mean the password really |
| 897 | does start with a comma, and would not |
| 898 | indicate an empty string */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 899 | if (value[1] != separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | vol->password = NULL; |
| 901 | continue; |
| 902 | } |
| 903 | } |
| 904 | temp_len = strlen(value); |
| 905 | /* removed password length check, NTLM passwords |
| 906 | can be arbitrarily long */ |
| 907 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 908 | /* if comma in password, the string will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | prematurely null terminated. Commas in password are |
| 910 | specified across the cifs mount interface by a double |
| 911 | comma ie ,, and a comma used as in other cases ie ',' |
| 912 | as a parameter delimiter/separator is single and due |
| 913 | to the strsep above is temporarily zeroed. */ |
| 914 | |
| 915 | /* NB: password legally can have multiple commas and |
| 916 | the only illegal character in a password is null */ |
| 917 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 918 | if ((value[temp_len] == 0) && |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 919 | (value[temp_len+1] == separator[0])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | /* reinsert comma */ |
| 921 | value[temp_len] = separator[0]; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 922 | temp_len += 2; /* move after second comma */ |
| 923 | while (value[temp_len] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | if (value[temp_len] == separator[0]) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 925 | if (value[temp_len+1] == |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 926 | separator[0]) { |
| 927 | /* skip second comma */ |
| 928 | temp_len++; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 929 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | /* single comma indicating start |
| 931 | of next parm */ |
| 932 | break; |
| 933 | } |
| 934 | } |
| 935 | temp_len++; |
| 936 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 937 | if (value[temp_len] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | options = NULL; |
| 939 | } else { |
| 940 | value[temp_len] = 0; |
| 941 | /* point option to start of next parm */ |
| 942 | options = value + temp_len + 1; |
| 943 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 944 | /* go from value to value + temp_len condensing |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | double commas to singles. Note that this ends up |
| 946 | allocating a few bytes too many, which is ok */ |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 947 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 948 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 949 | printk(KERN_WARNING "CIFS: no memory " |
| 950 | "for password\n"); |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 951 | return 1; |
| 952 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 953 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | vol->password[j] = value[i]; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 955 | if (value[i] == separator[0] |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 956 | && value[i+1] == separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | /* skip second comma */ |
| 958 | i++; |
| 959 | } |
| 960 | } |
| 961 | vol->password[j] = 0; |
| 962 | } else { |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 963 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 964 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 965 | printk(KERN_WARNING "CIFS: no memory " |
| 966 | "for password\n"); |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 967 | return 1; |
| 968 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | strcpy(vol->password, value); |
| 970 | } |
Jeff Layton | 58f7f68 | 2009-06-10 09:57:55 -0400 | [diff] [blame] | 971 | } else if (!strnicmp(data, "ip", 2) || |
| 972 | !strnicmp(data, "addr", 4)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | if (!value || !*value) { |
| 974 | vol->UNCip = NULL; |
Jeff Layton | 50b64e3 | 2009-06-02 06:55:20 -0400 | [diff] [blame] | 975 | } else if (strnlen(value, INET6_ADDRSTRLEN) < |
| 976 | INET6_ADDRSTRLEN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | vol->UNCip = value; |
| 978 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 979 | printk(KERN_WARNING "CIFS: ip address " |
| 980 | "too long\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | return 1; |
| 982 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 983 | } else if (strnicmp(data, "sec", 3) == 0) { |
| 984 | if (!value || !*value) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 985 | cERROR(1, "no security value specified"); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 986 | continue; |
| 987 | } else if (strnicmp(value, "krb5i", 5) == 0) { |
| 988 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 989 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 990 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 991 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
| 992 | CIFSSEC_MAY_KRB5; */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 993 | cERROR(1, "Krb5 cifs privacy not supported"); |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 994 | return 1; |
| 995 | } else if (strnicmp(value, "krb5", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 996 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 997 | } else if (strnicmp(value, "ntlmsspi", 8) == 0) { |
| 998 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP | |
| 999 | CIFSSEC_MUST_SIGN; |
| 1000 | } else if (strnicmp(value, "ntlmssp", 7) == 0) { |
| 1001 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1002 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1003 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1004 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1005 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1006 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1007 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1008 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1009 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1010 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
| 1011 | /* ntlm is default so can be turned off too */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1012 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1013 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1014 | /* BB is there a better way to do this? */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1015 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1016 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 1017 | } else if (strnicmp(value, "lanman", 6) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1018 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1019 | #endif |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1020 | } else if (strnicmp(value, "none", 4) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1021 | vol->nullauth = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1022 | } else { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1023 | cERROR(1, "bad security option: %s", value); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1024 | return 1; |
| 1025 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | } else if ((strnicmp(data, "unc", 3) == 0) |
| 1027 | || (strnicmp(data, "target", 6) == 0) |
| 1028 | || (strnicmp(data, "path", 4) == 0)) { |
| 1029 | if (!value || !*value) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1030 | printk(KERN_WARNING "CIFS: invalid path to " |
| 1031 | "network resource\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | return 1; /* needs_arg; */ |
| 1033 | } |
| 1034 | if ((temp_len = strnlen(value, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1035 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1036 | if (vol->UNC == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | return 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1038 | strcpy(vol->UNC, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1040 | vol->UNC[0] = '\\'; |
| 1041 | vol->UNC[1] = '\\'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1042 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | printk(KERN_WARNING |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1044 | "CIFS: UNC Path does not begin " |
| 1045 | "with // or \\\\ \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | return 1; |
| 1047 | } |
| 1048 | } else { |
| 1049 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| 1050 | return 1; |
| 1051 | } |
| 1052 | } else if ((strnicmp(data, "domain", 3) == 0) |
| 1053 | || (strnicmp(data, "workgroup", 5) == 0)) { |
| 1054 | if (!value || !*value) { |
| 1055 | printk(KERN_WARNING "CIFS: invalid domain name\n"); |
| 1056 | return 1; /* needs_arg; */ |
| 1057 | } |
| 1058 | /* BB are there cases in which a comma can be valid in |
| 1059 | a domain name and need special handling? */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1060 | if (strnlen(value, 256) < 256) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | vol->domainname = value; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1062 | cFYI(1, "Domain name set"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1064 | printk(KERN_WARNING "CIFS: domain name too " |
| 1065 | "long\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | return 1; |
| 1067 | } |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1068 | } else if (strnicmp(data, "srcaddr", 7) == 0) { |
| 1069 | vol->srcaddr.ss_family = AF_UNSPEC; |
| 1070 | |
| 1071 | if (!value || !*value) { |
| 1072 | printk(KERN_WARNING "CIFS: srcaddr value" |
| 1073 | " not specified.\n"); |
| 1074 | return 1; /* needs_arg; */ |
| 1075 | } |
| 1076 | i = cifs_convert_address((struct sockaddr *)&vol->srcaddr, |
| 1077 | value, strlen(value)); |
Dan Carpenter | b235f37 | 2010-10-25 07:02:56 +0200 | [diff] [blame] | 1078 | if (i == 0) { |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1079 | printk(KERN_WARNING "CIFS: Could not parse" |
| 1080 | " srcaddr: %s\n", |
| 1081 | value); |
| 1082 | return 1; |
| 1083 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1084 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
| 1085 | if (!value || !*value) { |
| 1086 | printk(KERN_WARNING |
| 1087 | "CIFS: invalid path prefix\n"); |
| 1088 | return 1; /* needs_argument */ |
| 1089 | } |
| 1090 | if ((temp_len = strnlen(value, 1024)) < 1024) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1091 | if (value[0] != '/') |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1092 | temp_len++; /* missing leading slash */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1093 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
| 1094 | if (vol->prepath == NULL) |
| 1095 | return 1; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1096 | if (value[0] != '/') { |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1097 | vol->prepath[0] = '/'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1098 | strcpy(vol->prepath+1, value); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1099 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1100 | strcpy(vol->prepath, value); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1101 | cFYI(1, "prefix path %s", vol->prepath); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1102 | } else { |
| 1103 | printk(KERN_WARNING "CIFS: prefix too long\n"); |
| 1104 | return 1; |
| 1105 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
| 1107 | if (!value || !*value) { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1108 | printk(KERN_WARNING "CIFS: invalid iocharset " |
| 1109 | "specified\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | return 1; /* needs_arg; */ |
| 1111 | } |
| 1112 | if (strnlen(value, 65) < 65) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1113 | if (strnicmp(value, "default", 7)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | vol->iocharset = value; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1115 | /* if iocharset not set then load_nls_default |
| 1116 | is used by caller */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1117 | cFYI(1, "iocharset set to %s", value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | } else { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1119 | printk(KERN_WARNING "CIFS: iocharset name " |
| 1120 | "too long.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | return 1; |
| 1122 | } |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1123 | } else if (!strnicmp(data, "uid", 3) && value && *value) { |
| 1124 | vol->linux_uid = simple_strtoul(value, &value, 0); |
| 1125 | uid_specified = true; |
Jeff Layton | bd763319 | 2011-01-11 10:33:24 -0500 | [diff] [blame] | 1126 | } else if (!strnicmp(data, "cruid", 5) && value && *value) { |
| 1127 | vol->cred_uid = simple_strtoul(value, &value, 0); |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1128 | } else if (!strnicmp(data, "forceuid", 8)) { |
| 1129 | override_uid = 1; |
| 1130 | } else if (!strnicmp(data, "noforceuid", 10)) { |
| 1131 | override_uid = 0; |
| 1132 | } else if (!strnicmp(data, "gid", 3) && value && *value) { |
| 1133 | vol->linux_gid = simple_strtoul(value, &value, 0); |
| 1134 | gid_specified = true; |
| 1135 | } else if (!strnicmp(data, "forcegid", 8)) { |
| 1136 | override_gid = 1; |
| 1137 | } else if (!strnicmp(data, "noforcegid", 10)) { |
| 1138 | override_gid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | } else if (strnicmp(data, "file_mode", 4) == 0) { |
| 1140 | if (value && *value) { |
| 1141 | vol->file_mode = |
| 1142 | simple_strtoul(value, &value, 0); |
| 1143 | } |
| 1144 | } else if (strnicmp(data, "dir_mode", 4) == 0) { |
| 1145 | if (value && *value) { |
| 1146 | vol->dir_mode = |
| 1147 | simple_strtoul(value, &value, 0); |
| 1148 | } |
| 1149 | } else if (strnicmp(data, "dirmode", 4) == 0) { |
| 1150 | if (value && *value) { |
| 1151 | vol->dir_mode = |
| 1152 | simple_strtoul(value, &value, 0); |
| 1153 | } |
| 1154 | } else if (strnicmp(data, "port", 4) == 0) { |
| 1155 | if (value && *value) { |
| 1156 | vol->port = |
| 1157 | simple_strtoul(value, &value, 0); |
| 1158 | } |
| 1159 | } else if (strnicmp(data, "rsize", 5) == 0) { |
| 1160 | if (value && *value) { |
| 1161 | vol->rsize = |
| 1162 | simple_strtoul(value, &value, 0); |
| 1163 | } |
| 1164 | } else if (strnicmp(data, "wsize", 5) == 0) { |
| 1165 | if (value && *value) { |
| 1166 | vol->wsize = |
| 1167 | simple_strtoul(value, &value, 0); |
| 1168 | } |
| 1169 | } else if (strnicmp(data, "sockopt", 5) == 0) { |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1170 | if (!value || !*value) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1171 | cERROR(1, "no socket option specified"); |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1172 | continue; |
| 1173 | } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) { |
| 1174 | vol->sockopt_tcp_nodelay = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | } |
| 1176 | } else if (strnicmp(data, "netbiosname", 4) == 0) { |
| 1177 | if (!value || !*value || (*value == ' ')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1178 | cFYI(1, "invalid (empty) netbiosname"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | } else { |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1180 | memset(vol->source_rfc1001_name, 0x20, |
| 1181 | RFC1001_NAME_LEN); |
| 1182 | /* |
| 1183 | * FIXME: are there cases in which a comma can |
| 1184 | * be valid in workstation netbios name (and |
| 1185 | * need special handling)? |
| 1186 | */ |
| 1187 | for (i = 0; i < RFC1001_NAME_LEN; i++) { |
| 1188 | /* don't ucase netbiosname for user */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1189 | if (value[i] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | break; |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1191 | vol->source_rfc1001_name[i] = value[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | } |
| 1193 | /* The string has 16th byte zero still from |
| 1194 | set at top of the function */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1195 | if (i == RFC1001_NAME_LEN && value[i] != 0) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1196 | printk(KERN_WARNING "CIFS: netbiosname" |
| 1197 | " longer than 15 truncated.\n"); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1198 | } |
| 1199 | } else if (strnicmp(data, "servern", 7) == 0) { |
| 1200 | /* servernetbiosname specified override *SMBSERVER */ |
| 1201 | if (!value || !*value || (*value == ' ')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1202 | cFYI(1, "empty server netbiosname specified"); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1203 | } else { |
| 1204 | /* last byte, type, is 0x20 for servr type */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1205 | memset(vol->target_rfc1001_name, 0x20, |
| 1206 | RFC1001_NAME_LEN_WITH_NULL); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1207 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1208 | for (i = 0; i < 15; i++) { |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1209 | /* BB are there cases in which a comma can be |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1210 | valid in this workstation netbios name |
| 1211 | (and need special handling)? */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1212 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1213 | /* user or mount helper must uppercase |
| 1214 | the netbiosname */ |
| 1215 | if (value[i] == 0) |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1216 | break; |
| 1217 | else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1218 | vol->target_rfc1001_name[i] = |
| 1219 | value[i]; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1220 | } |
| 1221 | /* The string has 16th byte zero still from |
| 1222 | set at top of the function */ |
Jeff Layton | 1397f2e | 2011-01-07 11:30:28 -0500 | [diff] [blame] | 1223 | if (i == RFC1001_NAME_LEN && value[i] != 0) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1224 | printk(KERN_WARNING "CIFS: server net" |
| 1225 | "biosname longer than 15 truncated.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | } |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1227 | } else if (strnicmp(data, "actimeo", 7) == 0) { |
| 1228 | if (value && *value) { |
| 1229 | vol->actimeo = HZ * simple_strtoul(value, |
| 1230 | &value, 0); |
| 1231 | if (vol->actimeo > CIFS_MAX_ACTIMEO) { |
| 1232 | cERROR(1, "CIFS: attribute cache" |
| 1233 | "timeout too large"); |
| 1234 | return 1; |
| 1235 | } |
| 1236 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } else if (strnicmp(data, "credentials", 4) == 0) { |
| 1238 | /* ignore */ |
| 1239 | } else if (strnicmp(data, "version", 3) == 0) { |
| 1240 | /* ignore */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1241 | } else if (strnicmp(data, "guest", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | /* ignore */ |
Steve French | 71a394f | 2009-06-26 04:07:18 +0000 | [diff] [blame] | 1243 | } else if (strnicmp(data, "rw", 2) == 0) { |
| 1244 | /* ignore */ |
| 1245 | } else if (strnicmp(data, "ro", 2) == 0) { |
| 1246 | /* ignore */ |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1247 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
| 1248 | vol->noblocksnd = 1; |
| 1249 | } else if (strnicmp(data, "noautotune", 10) == 0) { |
| 1250 | vol->noautotune = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | } else if ((strnicmp(data, "suid", 4) == 0) || |
| 1252 | (strnicmp(data, "nosuid", 6) == 0) || |
| 1253 | (strnicmp(data, "exec", 4) == 0) || |
| 1254 | (strnicmp(data, "noexec", 6) == 0) || |
| 1255 | (strnicmp(data, "nodev", 5) == 0) || |
| 1256 | (strnicmp(data, "noauto", 6) == 0) || |
| 1257 | (strnicmp(data, "dev", 3) == 0)) { |
| 1258 | /* The mount tool or mount.cifs helper (if present) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1259 | uses these opts to set flags, and the flags are read |
| 1260 | by the kernel vfs layer before we get here (ie |
| 1261 | before read super) so there is no point trying to |
| 1262 | parse these options again and set anything and it |
| 1263 | is ok to just ignore them */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | } else if (strnicmp(data, "hard", 4) == 0) { |
| 1266 | vol->retry = 1; |
| 1267 | } else if (strnicmp(data, "soft", 4) == 0) { |
| 1268 | vol->retry = 0; |
| 1269 | } else if (strnicmp(data, "perm", 4) == 0) { |
| 1270 | vol->noperm = 0; |
| 1271 | } else if (strnicmp(data, "noperm", 6) == 0) { |
| 1272 | vol->noperm = 1; |
Steve French | 6a0b482 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 1273 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
| 1274 | vol->remap = 1; |
| 1275 | } else if (strnicmp(data, "nomapchars", 10) == 0) { |
| 1276 | vol->remap = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1277 | } else if (strnicmp(data, "sfu", 3) == 0) { |
| 1278 | vol->sfu_emul = 1; |
| 1279 | } else if (strnicmp(data, "nosfu", 5) == 0) { |
| 1280 | vol->sfu_emul = 0; |
Steve French | 2c1b861 | 2008-10-16 18:35:21 +0000 | [diff] [blame] | 1281 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
| 1282 | vol->nodfs = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 1283 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
| 1284 | vol->posix_paths = 1; |
| 1285 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { |
| 1286 | vol->posix_paths = 0; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1287 | } else if (strnicmp(data, "nounix", 6) == 0) { |
| 1288 | vol->no_linux_ext = 1; |
| 1289 | } else if (strnicmp(data, "nolinux", 7) == 0) { |
| 1290 | vol->no_linux_ext = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1291 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1292 | (strnicmp(data, "ignorecase", 10) == 0)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1293 | vol->nocase = 1; |
Jeff Layton | f636a34 | 2010-07-26 10:29:58 -0400 | [diff] [blame] | 1294 | } else if (strnicmp(data, "mand", 4) == 0) { |
| 1295 | /* ignore */ |
| 1296 | } else if (strnicmp(data, "nomand", 6) == 0) { |
| 1297 | /* ignore */ |
| 1298 | } else if (strnicmp(data, "_netdev", 7) == 0) { |
| 1299 | /* ignore */ |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1300 | } else if (strnicmp(data, "brl", 3) == 0) { |
| 1301 | vol->nobrl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1302 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
Steve French | 1c95518 | 2005-08-30 20:58:07 -0700 | [diff] [blame] | 1303 | (strnicmp(data, "nolock", 6) == 0)) { |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1304 | vol->nobrl = 1; |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1305 | /* turn off mandatory locking in mode |
| 1306 | if remote locking is turned off since the |
| 1307 | local vfs will do advisory */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1308 | if (vol->file_mode == |
| 1309 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1310 | vol->file_mode = S_IALLUGO; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 1311 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
| 1312 | /* will take the shorter form "forcemand" as well */ |
| 1313 | /* This mount option will force use of mandatory |
| 1314 | (DOS/Windows style) byte range locks, instead of |
| 1315 | using posix advisory byte range locks, even if the |
| 1316 | Unix extensions are available and posix locks would |
| 1317 | be supported otherwise. If Unix extensions are not |
| 1318 | negotiated this has no effect since mandatory locks |
| 1319 | would be used (mandatory locks is all that those |
| 1320 | those servers support) */ |
| 1321 | vol->mand_lock = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | } else if (strnicmp(data, "setuids", 7) == 0) { |
| 1323 | vol->setuids = 1; |
| 1324 | } else if (strnicmp(data, "nosetuids", 9) == 0) { |
| 1325 | vol->setuids = 0; |
Jeff Layton | d0a9c07 | 2008-05-12 22:23:49 +0000 | [diff] [blame] | 1326 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
| 1327 | vol->dynperm = true; |
| 1328 | } else if (strnicmp(data, "nodynperm", 9) == 0) { |
| 1329 | vol->dynperm = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | } else if (strnicmp(data, "nohard", 6) == 0) { |
| 1331 | vol->retry = 0; |
| 1332 | } else if (strnicmp(data, "nosoft", 6) == 0) { |
| 1333 | vol->retry = 1; |
| 1334 | } else if (strnicmp(data, "nointr", 6) == 0) { |
| 1335 | vol->intr = 0; |
| 1336 | } else if (strnicmp(data, "intr", 4) == 0) { |
| 1337 | vol->intr = 1; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 1338 | } else if (strnicmp(data, "nostrictsync", 12) == 0) { |
| 1339 | vol->nostrictsync = 1; |
| 1340 | } else if (strnicmp(data, "strictsync", 10) == 0) { |
| 1341 | vol->nostrictsync = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1342 | } else if (strnicmp(data, "serverino", 7) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | vol->server_ino = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1344 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | vol->server_ino = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1346 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 1347 | vol->cifs_acl = 1; |
| 1348 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { |
| 1349 | vol->cifs_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1350 | } else if (strnicmp(data, "acl", 3) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | vol->no_psx_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1352 | } else if (strnicmp(data, "noacl", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | vol->no_psx_acl = 1; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1354 | } else if (strnicmp(data, "locallease", 6) == 0) { |
| 1355 | vol->local_lease = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1356 | } else if (strnicmp(data, "sign", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1357 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 1358 | } else if (strnicmp(data, "seal", 4) == 0) { |
| 1359 | /* we do not do the following in secFlags because seal |
| 1360 | is a per tree connection (mount) not a per socket |
| 1361 | or per-smb connection option in the protocol */ |
| 1362 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ |
| 1363 | vol->seal = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1364 | } else if (strnicmp(data, "direct", 6) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | vol->direct_io = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1366 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | vol->direct_io = 1; |
Pavel Shilovsky | d39454f | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 1368 | } else if (strnicmp(data, "strictcache", 11) == 0) { |
| 1369 | vol->strict_io = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | } else if (strnicmp(data, "noac", 4) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1371 | printk(KERN_WARNING "CIFS: Mount option noac not " |
| 1372 | "supported. Instead set " |
| 1373 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 1374 | } else if (strnicmp(data, "fsc", 3) == 0) { |
Suresh Jayaraman | 607a569 | 2010-11-24 17:49:05 +0530 | [diff] [blame] | 1375 | #ifndef CONFIG_CIFS_FSCACHE |
| 1376 | cERROR(1, "FS-Cache support needs CONFIG_CIFS_FSCACHE" |
| 1377 | "kernel config option set"); |
| 1378 | return 1; |
| 1379 | #endif |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 1380 | vol->fsc = true; |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 1381 | } else if (strnicmp(data, "mfsymlinks", 10) == 0) { |
| 1382 | vol->mfsymlinks = true; |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 1383 | } else if (strnicmp(data, "multiuser", 8) == 0) { |
| 1384 | vol->multiuser = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1386 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
| 1387 | data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | } |
| 1389 | if (vol->UNC == NULL) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1390 | if (devname == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1391 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
| 1392 | "target\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | return 1; |
| 1394 | } |
| 1395 | if ((temp_len = strnlen(devname, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1396 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1397 | if (vol->UNC == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | return 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1399 | strcpy(vol->UNC, devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1401 | vol->UNC[0] = '\\'; |
| 1402 | vol->UNC[1] = '\\'; |
| 1403 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1404 | printk(KERN_WARNING "CIFS: UNC Path does not " |
| 1405 | "begin with // or \\\\ \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | return 1; |
| 1407 | } |
Igor Mammedov | 7c5e628 | 2008-05-08 20:48:42 +0000 | [diff] [blame] | 1408 | value = strpbrk(vol->UNC+2, "/\\"); |
| 1409 | if (value) |
| 1410 | *value = '\\'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | } else { |
| 1412 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| 1413 | return 1; |
| 1414 | } |
| 1415 | } |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 1416 | |
| 1417 | if (vol->multiuser && !(vol->secFlg & CIFSSEC_MAY_KRB5)) { |
| 1418 | cERROR(1, "Multiuser mounts currently require krb5 " |
| 1419 | "authentication!"); |
| 1420 | return 1; |
| 1421 | } |
| 1422 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1423 | if (vol->UNCip == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | vol->UNCip = &vol->UNC[2]; |
| 1425 | |
Jeff Layton | 9b9d6b24 | 2009-07-31 06:56:09 -0400 | [diff] [blame] | 1426 | if (uid_specified) |
| 1427 | vol->override_uid = override_uid; |
| 1428 | else if (override_uid == 1) |
| 1429 | printk(KERN_NOTICE "CIFS: ignoring forceuid mount option " |
| 1430 | "specified with no uid= option.\n"); |
| 1431 | |
| 1432 | if (gid_specified) |
| 1433 | vol->override_gid = override_gid; |
| 1434 | else if (override_gid == 1) |
| 1435 | printk(KERN_NOTICE "CIFS: ignoring forcegid mount option " |
| 1436 | "specified with no gid= option.\n"); |
| 1437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | return 0; |
| 1439 | } |
| 1440 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1441 | /** Returns true if srcaddr isn't specified and rhs isn't |
| 1442 | * specified, or if srcaddr is specified and |
| 1443 | * matches the IP address of the rhs argument. |
| 1444 | */ |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1445 | static bool |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1446 | srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) |
| 1447 | { |
| 1448 | switch (srcaddr->sa_family) { |
| 1449 | case AF_UNSPEC: |
| 1450 | return (rhs->sa_family == AF_UNSPEC); |
| 1451 | case AF_INET: { |
| 1452 | struct sockaddr_in *saddr4 = (struct sockaddr_in *)srcaddr; |
| 1453 | struct sockaddr_in *vaddr4 = (struct sockaddr_in *)rhs; |
| 1454 | return (saddr4->sin_addr.s_addr == vaddr4->sin_addr.s_addr); |
| 1455 | } |
| 1456 | case AF_INET6: { |
| 1457 | struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr; |
| 1458 | struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)&rhs; |
| 1459 | return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr); |
| 1460 | } |
| 1461 | default: |
| 1462 | WARN_ON(1); |
| 1463 | return false; /* don't expect to be here */ |
| 1464 | } |
| 1465 | } |
| 1466 | |
Pavel Shilovsky | 4b88613 | 2010-12-13 22:18:07 +0300 | [diff] [blame] | 1467 | /* |
| 1468 | * If no port is specified in addr structure, we try to match with 445 port |
| 1469 | * and if it fails - with 139 ports. It should be called only if address |
| 1470 | * families of server and addr are equal. |
| 1471 | */ |
| 1472 | static bool |
| 1473 | match_port(struct TCP_Server_Info *server, struct sockaddr *addr) |
| 1474 | { |
| 1475 | unsigned short int port, *sport; |
| 1476 | |
| 1477 | switch (addr->sa_family) { |
| 1478 | case AF_INET: |
| 1479 | sport = &((struct sockaddr_in *) &server->dstaddr)->sin_port; |
| 1480 | port = ((struct sockaddr_in *) addr)->sin_port; |
| 1481 | break; |
| 1482 | case AF_INET6: |
| 1483 | sport = &((struct sockaddr_in6 *) &server->dstaddr)->sin6_port; |
| 1484 | port = ((struct sockaddr_in6 *) addr)->sin6_port; |
| 1485 | break; |
| 1486 | default: |
| 1487 | WARN_ON(1); |
| 1488 | return false; |
| 1489 | } |
| 1490 | |
| 1491 | if (!port) { |
| 1492 | port = htons(CIFS_PORT); |
| 1493 | if (port == *sport) |
| 1494 | return true; |
| 1495 | |
| 1496 | port = htons(RFC1001_PORT); |
| 1497 | } |
| 1498 | |
| 1499 | return port == *sport; |
| 1500 | } |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1501 | |
| 1502 | static bool |
| 1503 | match_address(struct TCP_Server_Info *server, struct sockaddr *addr, |
| 1504 | struct sockaddr *srcaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | { |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1506 | switch (addr->sa_family) { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1507 | case AF_INET: { |
| 1508 | struct sockaddr_in *addr4 = (struct sockaddr_in *)addr; |
| 1509 | struct sockaddr_in *srv_addr4 = |
| 1510 | (struct sockaddr_in *)&server->dstaddr; |
| 1511 | |
| 1512 | if (addr4->sin_addr.s_addr != srv_addr4->sin_addr.s_addr) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1513 | return false; |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1514 | break; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1515 | } |
| 1516 | case AF_INET6: { |
| 1517 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr; |
| 1518 | struct sockaddr_in6 *srv_addr6 = |
| 1519 | (struct sockaddr_in6 *)&server->dstaddr; |
| 1520 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1521 | if (!ipv6_addr_equal(&addr6->sin6_addr, |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1522 | &srv_addr6->sin6_addr)) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1523 | return false; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1524 | if (addr6->sin6_scope_id != srv_addr6->sin6_scope_id) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1525 | return false; |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1526 | break; |
| 1527 | } |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1528 | default: |
| 1529 | WARN_ON(1); |
| 1530 | return false; /* don't expect to be here */ |
| 1531 | } |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1532 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1533 | if (!srcip_matches(srcaddr, (struct sockaddr *)&server->srcaddr)) |
| 1534 | return false; |
| 1535 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1536 | return true; |
| 1537 | } |
| 1538 | |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1539 | static bool |
| 1540 | match_security(struct TCP_Server_Info *server, struct smb_vol *vol) |
| 1541 | { |
| 1542 | unsigned int secFlags; |
| 1543 | |
| 1544 | if (vol->secFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) |
| 1545 | secFlags = vol->secFlg; |
| 1546 | else |
| 1547 | secFlags = global_secflags | vol->secFlg; |
| 1548 | |
| 1549 | switch (server->secType) { |
| 1550 | case LANMAN: |
| 1551 | if (!(secFlags & (CIFSSEC_MAY_LANMAN|CIFSSEC_MAY_PLNTXT))) |
| 1552 | return false; |
| 1553 | break; |
| 1554 | case NTLMv2: |
| 1555 | if (!(secFlags & CIFSSEC_MAY_NTLMV2)) |
| 1556 | return false; |
| 1557 | break; |
| 1558 | case NTLM: |
| 1559 | if (!(secFlags & CIFSSEC_MAY_NTLM)) |
| 1560 | return false; |
| 1561 | break; |
| 1562 | case Kerberos: |
| 1563 | if (!(secFlags & CIFSSEC_MAY_KRB5)) |
| 1564 | return false; |
| 1565 | break; |
| 1566 | case RawNTLMSSP: |
| 1567 | if (!(secFlags & CIFSSEC_MAY_NTLMSSP)) |
| 1568 | return false; |
| 1569 | break; |
| 1570 | default: |
| 1571 | /* shouldn't happen */ |
| 1572 | return false; |
| 1573 | } |
| 1574 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1575 | /* now check if signing mode is acceptable */ |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1576 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0 && |
| 1577 | (server->secMode & SECMODE_SIGN_REQUIRED)) |
| 1578 | return false; |
| 1579 | else if (((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) && |
| 1580 | (server->secMode & |
| 1581 | (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)) == 0) |
| 1582 | return false; |
| 1583 | |
| 1584 | return true; |
| 1585 | } |
| 1586 | |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1587 | static struct TCP_Server_Info * |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1588 | cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1589 | { |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1590 | struct TCP_Server_Info *server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1592 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1593 | list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1594 | if (!net_eq(cifs_net_ns(server), current->nsproxy->net_ns)) |
| 1595 | continue; |
| 1596 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1597 | if (!match_address(server, addr, |
| 1598 | (struct sockaddr *)&vol->srcaddr)) |
Jeff Layton | 4515148 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1599 | continue; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1600 | |
Pavel Shilovsky | 4b88613 | 2010-12-13 22:18:07 +0300 | [diff] [blame] | 1601 | if (!match_port(server, addr)) |
| 1602 | continue; |
| 1603 | |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1604 | if (!match_security(server, vol)) |
| 1605 | continue; |
| 1606 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1607 | ++server->srv_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1608 | spin_unlock(&cifs_tcp_ses_lock); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1609 | cFYI(1, "Existing tcp session with server found"); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1610 | return server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1612 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | return NULL; |
| 1614 | } |
| 1615 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1616 | static void |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1617 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | { |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1619 | struct task_struct *task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1621 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1622 | if (--server->srv_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1623 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1624 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | } |
Steve French | dea570e | 2008-05-06 22:05:51 +0000 | [diff] [blame] | 1626 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1627 | put_net(cifs_net_ns(server)); |
| 1628 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1629 | list_del_init(&server->tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1630 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1631 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1632 | cancel_delayed_work_sync(&server->echo); |
| 1633 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1634 | spin_lock(&GlobalMid_Lock); |
| 1635 | server->tcpStatus = CifsExiting; |
| 1636 | spin_unlock(&GlobalMid_Lock); |
| 1637 | |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1638 | cifs_crypto_shash_release(server); |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 1639 | cifs_fscache_release_client_cookie(server); |
| 1640 | |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 1641 | kfree(server->session_key.response); |
| 1642 | server->session_key.response = NULL; |
| 1643 | server->session_key.len = 0; |
| 1644 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1645 | task = xchg(&server->tsk, NULL); |
| 1646 | if (task) |
| 1647 | force_sig(SIGKILL, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | } |
| 1649 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1650 | static struct TCP_Server_Info * |
| 1651 | cifs_get_tcp_session(struct smb_vol *volume_info) |
| 1652 | { |
| 1653 | struct TCP_Server_Info *tcp_ses = NULL; |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1654 | struct sockaddr_storage addr; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1655 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
| 1656 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; |
| 1657 | int rc; |
| 1658 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1659 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1660 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1661 | cFYI(1, "UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip); |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1662 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1663 | if (volume_info->UNCip && volume_info->UNC) { |
Jeff Layton | 50d9716 | 2010-07-06 20:43:01 -0400 | [diff] [blame] | 1664 | rc = cifs_fill_sockaddr((struct sockaddr *)&addr, |
| 1665 | volume_info->UNCip, |
David Howells | 67b7626 | 2010-07-22 18:33:01 +0100 | [diff] [blame] | 1666 | strlen(volume_info->UNCip), |
Jeff Layton | 50d9716 | 2010-07-06 20:43:01 -0400 | [diff] [blame] | 1667 | volume_info->port); |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1668 | if (!rc) { |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1669 | /* we failed translating address */ |
| 1670 | rc = -EINVAL; |
| 1671 | goto out_err; |
| 1672 | } |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1673 | } else if (volume_info->UNCip) { |
| 1674 | /* BB using ip addr as tcp_ses name to connect to the |
| 1675 | DFS root below */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1676 | cERROR(1, "Connecting to DFS root not implemented yet"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1677 | rc = -EINVAL; |
| 1678 | goto out_err; |
| 1679 | } else /* which tcp_sess DFS root would we conect to */ { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1680 | cERROR(1, "CIFS mount error: No UNC path (e.g. -o " |
| 1681 | "unc=//192.168.1.100/public) specified"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1682 | rc = -EINVAL; |
| 1683 | goto out_err; |
| 1684 | } |
| 1685 | |
| 1686 | /* see if we already have a matching tcp_ses */ |
Jeff Layton | daf5b0b | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1687 | tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr, volume_info); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1688 | if (tcp_ses) |
| 1689 | return tcp_ses; |
| 1690 | |
| 1691 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
| 1692 | if (!tcp_ses) { |
| 1693 | rc = -ENOMEM; |
| 1694 | goto out_err; |
| 1695 | } |
| 1696 | |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1697 | rc = cifs_crypto_shash_allocate(tcp_ses); |
| 1698 | if (rc) { |
| 1699 | cERROR(1, "could not setup hash structures rc %d", rc); |
| 1700 | goto out_err; |
| 1701 | } |
| 1702 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1703 | cifs_set_net_ns(tcp_ses, get_net(current->nsproxy->net_ns)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1704 | tcp_ses->hostname = extract_hostname(volume_info->UNC); |
| 1705 | if (IS_ERR(tcp_ses->hostname)) { |
| 1706 | rc = PTR_ERR(tcp_ses->hostname); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1707 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1708 | } |
| 1709 | |
| 1710 | tcp_ses->noblocksnd = volume_info->noblocksnd; |
| 1711 | tcp_ses->noautotune = volume_info->noautotune; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 1712 | tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1713 | atomic_set(&tcp_ses->inFlight, 0); |
| 1714 | init_waitqueue_head(&tcp_ses->response_q); |
| 1715 | init_waitqueue_head(&tcp_ses->request_q); |
| 1716 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); |
| 1717 | mutex_init(&tcp_ses->srv_mutex); |
| 1718 | memcpy(tcp_ses->workstation_RFC1001_name, |
| 1719 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
| 1720 | memcpy(tcp_ses->server_RFC1001_name, |
| 1721 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 1722 | tcp_ses->session_estab = false; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1723 | tcp_ses->sequence_number = 0; |
Steve French | fda3594 | 2011-01-20 18:06:34 +0000 | [diff] [blame] | 1724 | tcp_ses->lstrp = jiffies; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1725 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); |
| 1726 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1727 | INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1728 | |
| 1729 | /* |
| 1730 | * at this point we are the only ones with the pointer |
| 1731 | * to the struct since the kernel thread not created yet |
| 1732 | * no need to spinlock this init of tcpStatus or srv_count |
| 1733 | */ |
| 1734 | tcp_ses->tcpStatus = CifsNew; |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 1735 | memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr, |
| 1736 | sizeof(tcp_ses->srcaddr)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1737 | ++tcp_ses->srv_count; |
| 1738 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1739 | if (addr.ss_family == AF_INET6) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1740 | cFYI(1, "attempting ipv6 connect"); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1741 | /* BB should we allow ipv6 on port 139? */ |
| 1742 | /* other OS never observed in Wild doing 139 with v6 */ |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1743 | memcpy(&tcp_ses->dstaddr, sin_server6, |
| 1744 | sizeof(struct sockaddr_in6)); |
| 1745 | } else |
| 1746 | memcpy(&tcp_ses->dstaddr, sin_server, |
| 1747 | sizeof(struct sockaddr_in)); |
| 1748 | |
| 1749 | rc = ip_connect(tcp_ses); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1750 | if (rc < 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1751 | cERROR(1, "Error connecting to socket. Aborting operation"); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1752 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1753 | } |
| 1754 | |
| 1755 | /* |
| 1756 | * since we're in a cifs function already, we know that |
| 1757 | * this will succeed. No need for try_module_get(). |
| 1758 | */ |
| 1759 | __module_get(THIS_MODULE); |
| 1760 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, |
| 1761 | tcp_ses, "cifsd"); |
| 1762 | if (IS_ERR(tcp_ses->tsk)) { |
| 1763 | rc = PTR_ERR(tcp_ses->tsk); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1764 | cERROR(1, "error %d create cifsd thread", rc); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1765 | module_put(THIS_MODULE); |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1766 | goto out_err_crypto_release; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1767 | } |
| 1768 | |
| 1769 | /* thread spawned, put it on the list */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1770 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1771 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1772 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1773 | |
Suresh Jayaraman | 488f1d2d | 2010-07-05 18:12:15 +0530 | [diff] [blame] | 1774 | cifs_fscache_get_client_cookie(tcp_ses); |
| 1775 | |
Jeff Layton | c74093b | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 1776 | /* queue echo request delayed work */ |
| 1777 | queue_delayed_work(system_nrt_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL); |
| 1778 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1779 | return tcp_ses; |
| 1780 | |
Shirish Pargaonkar | f7c5445 | 2010-10-26 18:10:24 -0500 | [diff] [blame] | 1781 | out_err_crypto_release: |
Shirish Pargaonkar | d2b9152 | 2010-10-21 14:25:08 -0500 | [diff] [blame] | 1782 | cifs_crypto_shash_release(tcp_ses); |
| 1783 | |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 1784 | put_net(cifs_net_ns(tcp_ses)); |
| 1785 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1786 | out_err: |
| 1787 | if (tcp_ses) { |
Steve French | 8347a5cd | 2009-10-06 18:31:29 +0000 | [diff] [blame] | 1788 | if (!IS_ERR(tcp_ses->hostname)) |
| 1789 | kfree(tcp_ses->hostname); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1790 | if (tcp_ses->ssocket) |
| 1791 | sock_release(tcp_ses->ssocket); |
| 1792 | kfree(tcp_ses); |
| 1793 | } |
| 1794 | return ERR_PTR(rc); |
| 1795 | } |
| 1796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | static struct cifsSesInfo * |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1798 | 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] | 1799 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | struct cifsSesInfo *ses; |
| 1801 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1802 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1803 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { |
| 1804 | switch (server->secType) { |
| 1805 | case Kerberos: |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 1806 | if (vol->cred_uid != ses->cred_uid) |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1807 | continue; |
| 1808 | break; |
| 1809 | default: |
| 1810 | /* anything else takes username/password */ |
| 1811 | if (strncmp(ses->userName, vol->username, |
| 1812 | MAX_USERNAME_SIZE)) |
| 1813 | continue; |
| 1814 | if (strlen(vol->username) != 0 && |
Jeff Layton | 24e6cf9 | 2010-08-23 11:38:04 -0400 | [diff] [blame] | 1815 | ses->password != NULL && |
Jeff Layton | fc87a40 | 2010-08-18 13:13:39 -0400 | [diff] [blame] | 1816 | strncmp(ses->password, |
| 1817 | vol->password ? vol->password : "", |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1818 | MAX_PASSWORD_SIZE)) |
| 1819 | continue; |
| 1820 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1821 | ++ses->ses_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1822 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1823 | return ses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1825 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | return NULL; |
| 1827 | } |
| 1828 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1829 | static void |
| 1830 | cifs_put_smb_ses(struct cifsSesInfo *ses) |
| 1831 | { |
| 1832 | int xid; |
| 1833 | struct TCP_Server_Info *server = ses->server; |
| 1834 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1835 | cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1836 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1837 | if (--ses->ses_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1838 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1839 | return; |
| 1840 | } |
| 1841 | |
| 1842 | list_del_init(&ses->smb_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1843 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1844 | |
| 1845 | if (ses->status == CifsGood) { |
| 1846 | xid = GetXid(); |
| 1847 | CIFSSMBLogoff(xid, ses); |
| 1848 | _FreeXid(xid); |
| 1849 | } |
| 1850 | sesInfoFree(ses); |
| 1851 | cifs_put_tcp_session(server); |
| 1852 | } |
| 1853 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1854 | static struct cifsSesInfo * |
| 1855 | cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) |
| 1856 | { |
| 1857 | int rc = -ENOMEM, xid; |
| 1858 | struct cifsSesInfo *ses; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1859 | struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; |
| 1860 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1861 | |
| 1862 | xid = GetXid(); |
| 1863 | |
Jeff Layton | 4ff67b7 | 2010-07-06 20:43:02 -0400 | [diff] [blame] | 1864 | ses = cifs_find_smb_ses(server, volume_info); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1865 | if (ses) { |
| 1866 | cFYI(1, "Existing smb sess found (status=%d)", ses->status); |
| 1867 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1868 | mutex_lock(&ses->session_mutex); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 1869 | rc = cifs_negotiate_protocol(xid, ses); |
| 1870 | if (rc) { |
| 1871 | mutex_unlock(&ses->session_mutex); |
| 1872 | /* problem -- put our ses reference */ |
| 1873 | cifs_put_smb_ses(ses); |
| 1874 | FreeXid(xid); |
| 1875 | return ERR_PTR(rc); |
| 1876 | } |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1877 | if (ses->need_reconnect) { |
| 1878 | cFYI(1, "Session needs reconnect"); |
| 1879 | rc = cifs_setup_session(xid, ses, |
| 1880 | volume_info->local_nls); |
| 1881 | if (rc) { |
| 1882 | mutex_unlock(&ses->session_mutex); |
| 1883 | /* problem -- put our reference */ |
| 1884 | cifs_put_smb_ses(ses); |
| 1885 | FreeXid(xid); |
| 1886 | return ERR_PTR(rc); |
| 1887 | } |
| 1888 | } |
| 1889 | mutex_unlock(&ses->session_mutex); |
Jeff Layton | 460cf34 | 2010-09-14 11:38:24 -0400 | [diff] [blame] | 1890 | |
| 1891 | /* existing SMB ses has a server reference already */ |
| 1892 | cifs_put_tcp_session(server); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1893 | FreeXid(xid); |
| 1894 | return ses; |
| 1895 | } |
| 1896 | |
| 1897 | cFYI(1, "Existing smb sess not found"); |
| 1898 | ses = sesInfoAlloc(); |
| 1899 | if (ses == NULL) |
| 1900 | goto get_ses_fail; |
| 1901 | |
| 1902 | /* new SMB session uses our server ref */ |
| 1903 | ses->server = server; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1904 | if (server->dstaddr.ss_family == AF_INET6) |
| 1905 | sprintf(ses->serverName, "%pI6", &addr6->sin6_addr); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1906 | else |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 1907 | sprintf(ses->serverName, "%pI4", &addr->sin_addr); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1908 | |
| 1909 | if (volume_info->username) |
| 1910 | strncpy(ses->userName, volume_info->username, |
| 1911 | MAX_USERNAME_SIZE); |
| 1912 | |
| 1913 | /* volume_info->password freed at unmount */ |
| 1914 | if (volume_info->password) { |
| 1915 | ses->password = kstrdup(volume_info->password, GFP_KERNEL); |
| 1916 | if (!ses->password) |
| 1917 | goto get_ses_fail; |
| 1918 | } |
| 1919 | if (volume_info->domainname) { |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 1920 | ses->domainName = kstrdup(volume_info->domainname, GFP_KERNEL); |
| 1921 | if (!ses->domainName) |
| 1922 | goto get_ses_fail; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1923 | } |
Jeff Layton | 3e4b3e1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 1924 | ses->cred_uid = volume_info->cred_uid; |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1925 | ses->linux_uid = volume_info->linux_uid; |
| 1926 | ses->overrideSecFlg = volume_info->secFlg; |
| 1927 | |
| 1928 | mutex_lock(&ses->session_mutex); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 1929 | rc = cifs_negotiate_protocol(xid, ses); |
| 1930 | if (!rc) |
| 1931 | rc = cifs_setup_session(xid, ses, volume_info->local_nls); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1932 | mutex_unlock(&ses->session_mutex); |
Steve French | c8e56f1 | 2010-09-08 21:10:58 +0000 | [diff] [blame] | 1933 | if (rc) |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1934 | goto get_ses_fail; |
| 1935 | |
| 1936 | /* success, put it on the list */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1937 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1938 | list_add(&ses->smb_ses_list, &server->smb_ses_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1939 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 1940 | |
| 1941 | FreeXid(xid); |
| 1942 | return ses; |
| 1943 | |
| 1944 | get_ses_fail: |
| 1945 | sesInfoFree(ses); |
| 1946 | FreeXid(xid); |
| 1947 | return ERR_PTR(rc); |
| 1948 | } |
| 1949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | static struct cifsTconInfo * |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1951 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | { |
| 1953 | struct list_head *tmp; |
| 1954 | struct cifsTconInfo *tcon; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1956 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1957 | list_for_each(tmp, &ses->tcon_list) { |
| 1958 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); |
| 1959 | if (tcon->tidStatus == CifsExiting) |
| 1960 | continue; |
| 1961 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | continue; |
| 1963 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1964 | ++tcon->tc_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1965 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | return tcon; |
| 1967 | } |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1968 | spin_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | return NULL; |
| 1970 | } |
| 1971 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1972 | static void |
| 1973 | cifs_put_tcon(struct cifsTconInfo *tcon) |
| 1974 | { |
| 1975 | int xid; |
| 1976 | struct cifsSesInfo *ses = tcon->ses; |
| 1977 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 1978 | cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1979 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1980 | if (--tcon->tc_count > 0) { |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1981 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1982 | return; |
| 1983 | } |
| 1984 | |
| 1985 | list_del_init(&tcon->tcon_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1986 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1987 | |
| 1988 | xid = GetXid(); |
| 1989 | CIFSSMBTDis(xid, tcon); |
| 1990 | _FreeXid(xid); |
| 1991 | |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 1992 | cifs_fscache_release_super_cookie(tcon); |
Steve French | 9f84159 | 2010-07-23 20:37:53 +0000 | [diff] [blame] | 1993 | tconInfoFree(tcon); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1994 | cifs_put_smb_ses(ses); |
| 1995 | } |
| 1996 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 1997 | static struct cifsTconInfo * |
| 1998 | cifs_get_tcon(struct cifsSesInfo *ses, struct smb_vol *volume_info) |
| 1999 | { |
| 2000 | int rc, xid; |
| 2001 | struct cifsTconInfo *tcon; |
| 2002 | |
| 2003 | tcon = cifs_find_tcon(ses, volume_info->UNC); |
| 2004 | if (tcon) { |
| 2005 | cFYI(1, "Found match on UNC path"); |
| 2006 | /* existing tcon already has a reference */ |
| 2007 | cifs_put_smb_ses(ses); |
| 2008 | if (tcon->seal != volume_info->seal) |
| 2009 | cERROR(1, "transport encryption setting " |
| 2010 | "conflicts with existing tid"); |
| 2011 | return tcon; |
| 2012 | } |
| 2013 | |
| 2014 | tcon = tconInfoAlloc(); |
| 2015 | if (tcon == NULL) { |
| 2016 | rc = -ENOMEM; |
| 2017 | goto out_fail; |
| 2018 | } |
| 2019 | |
| 2020 | tcon->ses = ses; |
| 2021 | if (volume_info->password) { |
| 2022 | tcon->password = kstrdup(volume_info->password, GFP_KERNEL); |
| 2023 | if (!tcon->password) { |
| 2024 | rc = -ENOMEM; |
| 2025 | goto out_fail; |
| 2026 | } |
| 2027 | } |
| 2028 | |
| 2029 | if (strchr(volume_info->UNC + 3, '\\') == NULL |
| 2030 | && strchr(volume_info->UNC + 3, '/') == NULL) { |
| 2031 | cERROR(1, "Missing share name"); |
| 2032 | rc = -ENODEV; |
| 2033 | goto out_fail; |
| 2034 | } |
| 2035 | |
| 2036 | /* BB Do we need to wrap session_mutex around |
| 2037 | * this TCon call and Unix SetFS as |
| 2038 | * we do on SessSetup and reconnect? */ |
| 2039 | xid = GetXid(); |
| 2040 | rc = CIFSTCon(xid, ses, volume_info->UNC, tcon, volume_info->local_nls); |
| 2041 | FreeXid(xid); |
| 2042 | cFYI(1, "CIFS Tcon rc = %d", rc); |
| 2043 | if (rc) |
| 2044 | goto out_fail; |
| 2045 | |
| 2046 | if (volume_info->nodfs) { |
| 2047 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
| 2048 | cFYI(1, "DFS disabled (%d)", tcon->Flags); |
| 2049 | } |
| 2050 | tcon->seal = volume_info->seal; |
| 2051 | /* we can have only one retry value for a connection |
| 2052 | to a share so for resources mounted more than once |
| 2053 | to the same server share the last value passed in |
| 2054 | for the retry flag is used */ |
| 2055 | tcon->retry = volume_info->retry; |
| 2056 | tcon->nocase = volume_info->nocase; |
| 2057 | tcon->local_lease = volume_info->local_lease; |
| 2058 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2059 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2060 | list_add(&tcon->tcon_list, &ses->tcon_list); |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 2061 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2062 | |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 2063 | cifs_fscache_get_super_cookie(tcon); |
| 2064 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2065 | return tcon; |
| 2066 | |
| 2067 | out_fail: |
| 2068 | tconInfoFree(tcon); |
| 2069 | return ERR_PTR(rc); |
| 2070 | } |
| 2071 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2072 | void |
| 2073 | cifs_put_tlink(struct tcon_link *tlink) |
| 2074 | { |
| 2075 | if (!tlink || IS_ERR(tlink)) |
| 2076 | return; |
| 2077 | |
| 2078 | if (!atomic_dec_and_test(&tlink->tl_count) || |
| 2079 | test_bit(TCON_LINK_IN_TREE, &tlink->tl_flags)) { |
| 2080 | tlink->tl_time = jiffies; |
| 2081 | return; |
| 2082 | } |
| 2083 | |
| 2084 | if (!IS_ERR(tlink_tcon(tlink))) |
| 2085 | cifs_put_tcon(tlink_tcon(tlink)); |
| 2086 | kfree(tlink); |
| 2087 | return; |
| 2088 | } |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | int |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2091 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
| 2092 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2093 | struct dfs_info3_param **preferrals, int remap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2094 | { |
| 2095 | char *temp_unc; |
| 2096 | int rc = 0; |
| 2097 | |
| 2098 | *pnum_referrals = 0; |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2099 | *preferrals = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | |
| 2101 | if (pSesInfo->ipc_tid == 0) { |
| 2102 | temp_unc = kmalloc(2 /* for slashes */ + |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2103 | strnlen(pSesInfo->serverName, |
| 2104 | SERVER_NAME_LEN_WITH_NULL * 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | + 1 + 4 /* slash IPC$ */ + 2, |
| 2106 | GFP_KERNEL); |
| 2107 | if (temp_unc == NULL) |
| 2108 | return -ENOMEM; |
| 2109 | temp_unc[0] = '\\'; |
| 2110 | temp_unc[1] = '\\'; |
| 2111 | strcpy(temp_unc + 2, pSesInfo->serverName); |
| 2112 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); |
| 2113 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2114 | 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] | 2115 | kfree(temp_unc); |
| 2116 | } |
| 2117 | if (rc == 0) |
Steve French | c2cf07d | 2008-05-15 06:20:02 +0000 | [diff] [blame] | 2118 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 2119 | pnum_referrals, nls_codepage, remap); |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 2120 | /* BB map targetUNCs to dfs_info3 structures, here or |
| 2121 | in CIFSGetDFSRefer BB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | |
| 2123 | return rc; |
| 2124 | } |
| 2125 | |
Jeff Layton | 09e50d5 | 2008-07-23 10:11:19 -0400 | [diff] [blame] | 2126 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 2127 | static struct lock_class_key cifs_key[2]; |
| 2128 | static struct lock_class_key cifs_slock_key[2]; |
| 2129 | |
| 2130 | static inline void |
| 2131 | cifs_reclassify_socket4(struct socket *sock) |
| 2132 | { |
| 2133 | struct sock *sk = sock->sk; |
| 2134 | BUG_ON(sock_owned_by_user(sk)); |
| 2135 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", |
| 2136 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); |
| 2137 | } |
| 2138 | |
| 2139 | static inline void |
| 2140 | cifs_reclassify_socket6(struct socket *sock) |
| 2141 | { |
| 2142 | struct sock *sk = sock->sk; |
| 2143 | BUG_ON(sock_owned_by_user(sk)); |
| 2144 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", |
| 2145 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); |
| 2146 | } |
| 2147 | #else |
| 2148 | static inline void |
| 2149 | cifs_reclassify_socket4(struct socket *sock) |
| 2150 | { |
| 2151 | } |
| 2152 | |
| 2153 | static inline void |
| 2154 | cifs_reclassify_socket6(struct socket *sock) |
| 2155 | { |
| 2156 | } |
| 2157 | #endif |
| 2158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | /* See RFC1001 section 14 on representation of Netbios names */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2160 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2162 | unsigned int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2164 | for (i = 0, j = 0; i < (length); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | /* mask a nibble at a time and encode */ |
| 2166 | target[j] = 'A' + (0x0F & (source[i] >> 4)); |
| 2167 | target[j+1] = 'A' + (0x0F & source[i]); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2168 | j += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | } |
| 2170 | |
| 2171 | } |
| 2172 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 2173 | static int |
| 2174 | bind_socket(struct TCP_Server_Info *server) |
| 2175 | { |
| 2176 | int rc = 0; |
| 2177 | if (server->srcaddr.ss_family != AF_UNSPEC) { |
| 2178 | /* Bind to the specified local IP address */ |
| 2179 | struct socket *socket = server->ssocket; |
| 2180 | rc = socket->ops->bind(socket, |
| 2181 | (struct sockaddr *) &server->srcaddr, |
| 2182 | sizeof(server->srcaddr)); |
| 2183 | if (rc < 0) { |
| 2184 | struct sockaddr_in *saddr4; |
| 2185 | struct sockaddr_in6 *saddr6; |
| 2186 | saddr4 = (struct sockaddr_in *)&server->srcaddr; |
| 2187 | saddr6 = (struct sockaddr_in6 *)&server->srcaddr; |
| 2188 | if (saddr6->sin6_family == AF_INET6) |
| 2189 | cERROR(1, "cifs: " |
| 2190 | "Failed to bind to: %pI6c, error: %d\n", |
| 2191 | &saddr6->sin6_addr, rc); |
| 2192 | else |
| 2193 | cERROR(1, "cifs: " |
| 2194 | "Failed to bind to: %pI4, error: %d\n", |
| 2195 | &saddr4->sin_addr.s_addr, rc); |
| 2196 | } |
| 2197 | } |
| 2198 | return rc; |
| 2199 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | |
| 2201 | static int |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2202 | ip_rfc1001_connect(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | { |
| 2204 | int rc = 0; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2205 | /* |
| 2206 | * some servers require RFC1001 sessinit before sending |
| 2207 | * negprot - BB check reconnection in case where second |
| 2208 | * sessinit is sent but no second negprot |
| 2209 | */ |
| 2210 | struct rfc1002_session_packet *ses_init_buf; |
| 2211 | struct smb_hdr *smb_buf; |
| 2212 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), |
| 2213 | GFP_KERNEL); |
| 2214 | if (ses_init_buf) { |
| 2215 | ses_init_buf->trailer.session_req.called_len = 32; |
| 2216 | |
| 2217 | if (server->server_RFC1001_name && |
| 2218 | server->server_RFC1001_name[0] != 0) |
| 2219 | rfc1002mangle(ses_init_buf->trailer. |
| 2220 | session_req.called_name, |
| 2221 | server->server_RFC1001_name, |
| 2222 | RFC1001_NAME_LEN_WITH_NULL); |
| 2223 | else |
| 2224 | rfc1002mangle(ses_init_buf->trailer. |
| 2225 | session_req.called_name, |
| 2226 | DEFAULT_CIFS_CALLED_NAME, |
| 2227 | RFC1001_NAME_LEN_WITH_NULL); |
| 2228 | |
| 2229 | ses_init_buf->trailer.session_req.calling_len = 32; |
| 2230 | |
| 2231 | /* |
| 2232 | * calling name ends in null (byte 16) from old smb |
| 2233 | * convention. |
| 2234 | */ |
| 2235 | if (server->workstation_RFC1001_name && |
| 2236 | server->workstation_RFC1001_name[0] != 0) |
| 2237 | rfc1002mangle(ses_init_buf->trailer. |
| 2238 | session_req.calling_name, |
| 2239 | server->workstation_RFC1001_name, |
| 2240 | RFC1001_NAME_LEN_WITH_NULL); |
| 2241 | else |
| 2242 | rfc1002mangle(ses_init_buf->trailer. |
| 2243 | session_req.calling_name, |
| 2244 | "LINUX_CIFS_CLNT", |
| 2245 | RFC1001_NAME_LEN_WITH_NULL); |
| 2246 | |
| 2247 | ses_init_buf->trailer.session_req.scope1 = 0; |
| 2248 | ses_init_buf->trailer.session_req.scope2 = 0; |
| 2249 | smb_buf = (struct smb_hdr *)ses_init_buf; |
| 2250 | |
| 2251 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ |
| 2252 | smb_buf->smb_buf_length = 0x81000044; |
| 2253 | rc = smb_send(server, smb_buf, 0x44); |
| 2254 | kfree(ses_init_buf); |
| 2255 | /* |
| 2256 | * RFC1001 layer in at least one server |
| 2257 | * requires very short break before negprot |
| 2258 | * presumably because not expecting negprot |
| 2259 | * to follow so fast. This is a simple |
| 2260 | * solution that works without |
| 2261 | * complicating the code and causes no |
| 2262 | * significant slowing down on mount |
| 2263 | * for everyone else |
| 2264 | */ |
| 2265 | usleep_range(1000, 2000); |
| 2266 | } |
| 2267 | /* |
| 2268 | * else the negprot may still work without this |
| 2269 | * even though malloc failed |
| 2270 | */ |
| 2271 | |
| 2272 | return rc; |
| 2273 | } |
| 2274 | |
| 2275 | static int |
| 2276 | generic_ip_connect(struct TCP_Server_Info *server) |
| 2277 | { |
| 2278 | int rc = 0; |
| 2279 | unsigned short int sport; |
| 2280 | int slen, sfamily; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2281 | struct socket *socket = server->ssocket; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2282 | struct sockaddr *saddr; |
| 2283 | |
| 2284 | saddr = (struct sockaddr *) &server->dstaddr; |
| 2285 | |
| 2286 | if (server->dstaddr.ss_family == AF_INET6) { |
| 2287 | sport = ((struct sockaddr_in6 *) saddr)->sin6_port; |
| 2288 | slen = sizeof(struct sockaddr_in6); |
| 2289 | sfamily = AF_INET6; |
| 2290 | } else { |
| 2291 | sport = ((struct sockaddr_in *) saddr)->sin_port; |
| 2292 | slen = sizeof(struct sockaddr_in); |
| 2293 | sfamily = AF_INET; |
| 2294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2296 | if (socket == NULL) { |
Rob Landley | f1d0c99 | 2011-01-22 15:44:05 -0600 | [diff] [blame] | 2297 | rc = __sock_create(cifs_net_ns(server), sfamily, SOCK_STREAM, |
| 2298 | IPPROTO_TCP, &socket, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | if (rc < 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2300 | cERROR(1, "Error %d creating socket", rc); |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2301 | server->ssocket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | } |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2304 | |
| 2305 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2306 | cFYI(1, "Socket created"); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 2307 | server->ssocket = socket; |
| 2308 | socket->sk->sk_allocation = GFP_NOFS; |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2309 | if (sfamily == AF_INET6) |
| 2310 | cifs_reclassify_socket6(socket); |
| 2311 | else |
| 2312 | cifs_reclassify_socket4(socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | } |
| 2314 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 2315 | rc = bind_socket(server); |
| 2316 | if (rc < 0) |
| 2317 | return rc; |
| 2318 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2319 | rc = socket->ops->connect(socket, saddr, slen, 0); |
| 2320 | if (rc < 0) { |
| 2321 | cFYI(1, "Error %d connecting to server", rc); |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 2322 | sock_release(socket); |
| 2323 | server->ssocket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2324 | return rc; |
| 2325 | } |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 2326 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 2327 | /* |
| 2328 | * Eventually check for other socket options to change from |
| 2329 | * the default. sock_setsockopt not used because it expects |
| 2330 | * user space buffer |
| 2331 | */ |
| 2332 | socket->sk->sk_rcvtimeo = 7 * HZ; |
Steve French | da505c3 | 2009-01-19 03:49:35 +0000 | [diff] [blame] | 2333 | socket->sk->sk_sndtimeo = 5 * HZ; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2334 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2335 | /* make the bufsizes depend on wsize/rsize and max requests */ |
| 2336 | if (server->noautotune) { |
| 2337 | if (socket->sk->sk_sndbuf < (200 * 1024)) |
| 2338 | socket->sk->sk_sndbuf = 200 * 1024; |
| 2339 | if (socket->sk->sk_rcvbuf < (140 * 1024)) |
| 2340 | socket->sk->sk_rcvbuf = 140 * 1024; |
| 2341 | } |
| 2342 | |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2343 | if (server->tcp_nodelay) { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2344 | int val = 1; |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2345 | rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY, |
| 2346 | (char *)&val, sizeof(val)); |
| 2347 | if (rc) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2348 | cFYI(1, "set TCP_NODELAY socket option error %d", rc); |
Steve French | 6a5fa236 | 2010-01-01 01:28:43 +0000 | [diff] [blame] | 2349 | } |
| 2350 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2351 | cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
| 2352 | socket->sk->sk_sndbuf, |
| 2353 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo); |
| 2354 | |
| 2355 | if (sport == htons(RFC1001_PORT)) |
| 2356 | rc = ip_rfc1001_connect(server); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | return rc; |
| 2359 | } |
| 2360 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 2361 | static int |
| 2362 | ip_connect(struct TCP_Server_Info *server) |
| 2363 | { |
| 2364 | unsigned short int *sport; |
| 2365 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; |
| 2366 | struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; |
| 2367 | |
| 2368 | if (server->dstaddr.ss_family == AF_INET6) |
| 2369 | sport = &addr6->sin6_port; |
| 2370 | else |
| 2371 | sport = &addr->sin_port; |
| 2372 | |
| 2373 | if (*sport == 0) { |
| 2374 | int rc; |
| 2375 | |
| 2376 | /* try with 445 port at first */ |
| 2377 | *sport = htons(CIFS_PORT); |
| 2378 | |
| 2379 | rc = generic_ip_connect(server); |
| 2380 | if (rc >= 0) |
| 2381 | return rc; |
| 2382 | |
| 2383 | /* if it failed, try with 139 port */ |
| 2384 | *sport = htons(RFC1001_PORT); |
| 2385 | } |
| 2386 | |
| 2387 | return generic_ip_connect(server); |
| 2388 | } |
| 2389 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2390 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
| 2391 | struct super_block *sb, struct smb_vol *vol_info) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2392 | { |
| 2393 | /* if we are reconnecting then should we check to see if |
| 2394 | * any requested capabilities changed locally e.g. via |
| 2395 | * remount but we can not do much about it here |
| 2396 | * if they have (even if we could detect it by the following) |
| 2397 | * Perhaps we could add a backpointer to array of sb from tcon |
| 2398 | * or if we change to make all sb to same share the same |
| 2399 | * sb as NFS - then we only have one backpointer to sb. |
| 2400 | * What if we wanted to mount the server share twice once with |
| 2401 | * and once without posixacls or posix paths? */ |
| 2402 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2403 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2404 | if (vol_info && vol_info->no_linux_ext) { |
| 2405 | tcon->fsUnixInfo.Capability = 0; |
| 2406 | tcon->unix_ext = 0; /* Unix Extensions disabled */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2407 | cFYI(1, "Linux protocol extensions disabled"); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2408 | return; |
| 2409 | } else if (vol_info) |
| 2410 | tcon->unix_ext = 1; /* Unix Extensions supported */ |
| 2411 | |
| 2412 | if (tcon->unix_ext == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2413 | cFYI(1, "Unix extensions disabled so not set on reconnect"); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 2414 | return; |
| 2415 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2416 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2417 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2418 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2419 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2420 | /* check for reconnect case in which we do not |
| 2421 | want to change the mount behavior if we can avoid it */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2422 | if (vol_info == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2423 | /* turn off POSIX ACL and PATHNAMES if not set |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2424 | originally at mount time */ |
| 2425 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) |
| 2426 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2427 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
| 2428 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2429 | cERROR(1, "POSIXPATH support change"); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2430 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2431 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2432 | cERROR(1, "possible reconnect error"); |
| 2433 | cERROR(1, "server disabled POSIX path support"); |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 2434 | } |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2435 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2436 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2437 | cap &= CIFS_UNIX_CAP_MASK; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2438 | if (vol_info && vol_info->no_psx_acl) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2439 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2440 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2441 | cFYI(1, "negotiated posix acl support"); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2442 | if (sb) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2443 | sb->s_flags |= MS_POSIXACL; |
| 2444 | } |
| 2445 | |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2446 | if (vol_info && vol_info->posix_paths == 0) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2447 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2448 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2449 | cFYI(1, "negotiate posix pathnames"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2450 | if (sb) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2451 | CIFS_SB(sb)->mnt_cifs_flags |= |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2452 | CIFS_MOUNT_POSIX_PATHS; |
| 2453 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2454 | |
Steve French | 984acfe | 2007-04-26 16:42:50 +0000 | [diff] [blame] | 2455 | /* We might be setting the path sep back to a different |
| 2456 | form if we are reconnecting and the server switched its |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2457 | posix path capability for this share */ |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2458 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
Steve French | 984acfe | 2007-04-26 16:42:50 +0000 | [diff] [blame] | 2459 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2460 | |
| 2461 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { |
| 2462 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { |
| 2463 | CIFS_SB(sb)->rsize = 127 * 1024; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2464 | cFYI(DBG2, "larger reads not supported by srv"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2465 | } |
| 2466 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2467 | |
| 2468 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2469 | cFYI(1, "Negotiate caps 0x%x", (int)cap); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2470 | #ifdef CONFIG_CIFS_DEBUG2 |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2471 | if (cap & CIFS_UNIX_FCNTL_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2472 | cFYI(1, "FCNTL cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2473 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2474 | cFYI(1, "EXTATTR cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2475 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2476 | cFYI(1, "POSIX path cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2477 | if (cap & CIFS_UNIX_XATTR_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2478 | cFYI(1, "XATTR cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2479 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2480 | cFYI(1, "POSIX ACL cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2481 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2482 | cFYI(1, "very large read cap"); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2483 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2484 | cFYI(1, "very large write cap"); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2485 | #endif /* CIFS_DEBUG2 */ |
| 2486 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2487 | if (vol_info == NULL) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2488 | cFYI(1, "resetting capabilities failed"); |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2489 | } else |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2490 | cERROR(1, "Negotiating Unix capabilities " |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2491 | "with the server failed. Consider " |
| 2492 | "mounting with the Unix Extensions\n" |
| 2493 | "disabled, if problems are found, " |
| 2494 | "by specifying the nounix mount " |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2495 | "option."); |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2496 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2497 | } |
| 2498 | } |
| 2499 | } |
| 2500 | |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2501 | static void |
| 2502 | convert_delimiter(char *path, char delim) |
| 2503 | { |
| 2504 | int i; |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2505 | char old_delim; |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2506 | |
| 2507 | if (path == NULL) |
| 2508 | return; |
| 2509 | |
Steve French | 582d21e | 2008-05-13 04:54:12 +0000 | [diff] [blame] | 2510 | if (delim == '/') |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2511 | old_delim = '\\'; |
| 2512 | else |
| 2513 | old_delim = '/'; |
| 2514 | |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2515 | for (i = 0; path[i] != '\0'; i++) { |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2516 | if (path[i] == old_delim) |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2517 | path[i] = delim; |
| 2518 | } |
| 2519 | } |
| 2520 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2521 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
| 2522 | struct cifs_sb_info *cifs_sb) |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2523 | { |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 2524 | INIT_DELAYED_WORK(&cifs_sb->prune_tlinks, cifs_prune_tlinks); |
| 2525 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2526 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2527 | cERROR(1, "rsize %d too large, using MaxBufSize", |
| 2528 | pvolume_info->rsize); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2529 | cifs_sb->rsize = CIFSMaxBufSize; |
| 2530 | } else if ((pvolume_info->rsize) && |
| 2531 | (pvolume_info->rsize <= CIFSMaxBufSize)) |
| 2532 | cifs_sb->rsize = pvolume_info->rsize; |
| 2533 | else /* default */ |
| 2534 | cifs_sb->rsize = CIFSMaxBufSize; |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2535 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2536 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2537 | cERROR(1, "wsize %d too large, using 4096 instead", |
| 2538 | pvolume_info->wsize); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2539 | cifs_sb->wsize = 4096; |
| 2540 | } else if (pvolume_info->wsize) |
| 2541 | cifs_sb->wsize = pvolume_info->wsize; |
| 2542 | else |
| 2543 | cifs_sb->wsize = min_t(const int, |
| 2544 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
| 2545 | 127*1024); |
| 2546 | /* old default of CIFSMaxBufSize was too small now |
| 2547 | that SMB Write2 can send multiple pages in kvec. |
| 2548 | RFC1001 does not describe what happens when frame |
| 2549 | bigger than 128K is sent so use that as max in |
| 2550 | conjunction with 52K kvec constraint on arch with 4K |
| 2551 | page size */ |
| 2552 | |
| 2553 | if (cifs_sb->rsize < 2048) { |
| 2554 | cifs_sb->rsize = 2048; |
| 2555 | /* Windows ME may prefer this */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2556 | cFYI(1, "readsize set to minimum: 2048"); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2557 | } |
| 2558 | /* calculate prepath */ |
| 2559 | cifs_sb->prepath = pvolume_info->prepath; |
| 2560 | if (cifs_sb->prepath) { |
| 2561 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
| 2562 | /* we can not convert the / to \ in the path |
| 2563 | separators in the prefixpath yet because we do not |
| 2564 | know (until reset_cifs_unix_caps is called later) |
| 2565 | whether POSIX PATH CAP is available. We normalize |
| 2566 | the / to \ after reset_cifs_unix_caps is called */ |
| 2567 | pvolume_info->prepath = NULL; |
| 2568 | } else |
| 2569 | cifs_sb->prepathlen = 0; |
| 2570 | cifs_sb->mnt_uid = pvolume_info->linux_uid; |
| 2571 | cifs_sb->mnt_gid = pvolume_info->linux_gid; |
| 2572 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; |
| 2573 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2574 | cFYI(1, "file mode: 0x%x dir mode: 0x%x", |
| 2575 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2576 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 2577 | cifs_sb->actimeo = pvolume_info->actimeo; |
| 2578 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2579 | if (pvolume_info->noperm) |
| 2580 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
| 2581 | if (pvolume_info->setuids) |
| 2582 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
| 2583 | if (pvolume_info->server_ino) |
| 2584 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
| 2585 | if (pvolume_info->remap) |
| 2586 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
| 2587 | if (pvolume_info->no_xattr) |
| 2588 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
| 2589 | if (pvolume_info->sfu_emul) |
| 2590 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
| 2591 | if (pvolume_info->nobrl) |
| 2592 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 2593 | if (pvolume_info->nostrictsync) |
Steve French | 4717bed | 2009-02-24 14:44:19 +0000 | [diff] [blame] | 2594 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 2595 | if (pvolume_info->mand_lock) |
| 2596 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2597 | if (pvolume_info->cifs_acl) |
| 2598 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
| 2599 | if (pvolume_info->override_uid) |
| 2600 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; |
| 2601 | if (pvolume_info->override_gid) |
| 2602 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; |
| 2603 | if (pvolume_info->dynperm) |
| 2604 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; |
Suresh Jayaraman | fa1df75 | 2010-07-05 18:13:36 +0530 | [diff] [blame] | 2605 | if (pvolume_info->fsc) |
| 2606 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_FSCACHE; |
Jeff Layton | 0eb8a13 | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 2607 | if (pvolume_info->multiuser) |
| 2608 | cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER | |
| 2609 | CIFS_MOUNT_NO_PERM); |
Pavel Shilovsky | d39454f | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 2610 | if (pvolume_info->strict_io) |
| 2611 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2612 | if (pvolume_info->direct_io) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2613 | cFYI(1, "mounting share using direct i/o"); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2614 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
| 2615 | } |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 2616 | if (pvolume_info->mfsymlinks) { |
| 2617 | if (pvolume_info->sfu_emul) { |
| 2618 | cERROR(1, "mount option mfsymlinks ignored if sfu " |
| 2619 | "mount option is used"); |
| 2620 | } else { |
| 2621 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS; |
| 2622 | } |
| 2623 | } |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2624 | |
| 2625 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2626 | cERROR(1, "mount option dynperm ignored if cifsacl " |
| 2627 | "mount option supported"); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2628 | } |
| 2629 | |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2630 | static int |
| 2631 | is_path_accessible(int xid, struct cifsTconInfo *tcon, |
| 2632 | struct cifs_sb_info *cifs_sb, const char *full_path) |
| 2633 | { |
| 2634 | int rc; |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2635 | FILE_ALL_INFO *pfile_info; |
| 2636 | |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2637 | pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
| 2638 | if (pfile_info == NULL) |
| 2639 | return -ENOMEM; |
| 2640 | |
| 2641 | rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, |
| 2642 | 0 /* not legacy */, cifs_sb->local_nls, |
| 2643 | cifs_sb->mnt_cifs_flags & |
| 2644 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2645 | kfree(pfile_info); |
| 2646 | return rc; |
| 2647 | } |
| 2648 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2649 | static void |
| 2650 | cleanup_volume_info(struct smb_vol **pvolume_info) |
| 2651 | { |
| 2652 | struct smb_vol *volume_info; |
| 2653 | |
Dan Carpenter | ad6cca6 | 2010-04-26 12:10:06 +0200 | [diff] [blame] | 2654 | if (!pvolume_info || !*pvolume_info) |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2655 | return; |
| 2656 | |
| 2657 | volume_info = *pvolume_info; |
| 2658 | kzfree(volume_info->password); |
| 2659 | kfree(volume_info->UNC); |
| 2660 | kfree(volume_info->prepath); |
| 2661 | kfree(volume_info); |
| 2662 | *pvolume_info = NULL; |
| 2663 | return; |
| 2664 | } |
| 2665 | |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2666 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2667 | /* build_path_to_root returns full path to root when |
| 2668 | * we do not have an exiting connection (tcon) */ |
| 2669 | static char * |
| 2670 | build_unc_path_to_root(const struct smb_vol *volume_info, |
| 2671 | const struct cifs_sb_info *cifs_sb) |
| 2672 | { |
| 2673 | char *full_path; |
| 2674 | |
| 2675 | int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1); |
| 2676 | full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL); |
| 2677 | if (full_path == NULL) |
| 2678 | return ERR_PTR(-ENOMEM); |
| 2679 | |
| 2680 | strncpy(full_path, volume_info->UNC, unc_len); |
| 2681 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { |
| 2682 | int i; |
| 2683 | for (i = 0; i < unc_len; i++) { |
| 2684 | if (full_path[i] == '\\') |
| 2685 | full_path[i] = '/'; |
| 2686 | } |
| 2687 | } |
| 2688 | |
| 2689 | if (cifs_sb->prepathlen) |
| 2690 | strncpy(full_path + unc_len, cifs_sb->prepath, |
| 2691 | cifs_sb->prepathlen); |
| 2692 | |
| 2693 | full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */ |
| 2694 | return full_path; |
| 2695 | } |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2696 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | int |
| 2699 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2700 | char *mount_data_global, const char *devname) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | { |
Jeff Layton | a2934c7 | 2009-12-03 08:09:41 -0500 | [diff] [blame] | 2702 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | int xid; |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2704 | struct smb_vol *volume_info; |
Jeff Layton | a2934c7 | 2009-12-03 08:09:41 -0500 | [diff] [blame] | 2705 | struct cifsSesInfo *pSesInfo; |
| 2706 | struct cifsTconInfo *tcon; |
| 2707 | struct TCP_Server_Info *srvTcp; |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2708 | char *full_path; |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2709 | char *mount_data = mount_data_global; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2710 | struct tcon_link *tlink; |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2711 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2712 | struct dfs_info3_param *referrals = NULL; |
| 2713 | unsigned int num_referrals = 0; |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2714 | int referral_walks_count = 0; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2715 | try_mount_again: |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2716 | #endif |
Jeff Layton | a2934c7 | 2009-12-03 08:09:41 -0500 | [diff] [blame] | 2717 | rc = 0; |
| 2718 | tcon = NULL; |
| 2719 | pSesInfo = NULL; |
| 2720 | srvTcp = NULL; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2721 | full_path = NULL; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2722 | tlink = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2723 | |
| 2724 | xid = GetXid(); |
| 2725 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2726 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
| 2727 | if (!volume_info) { |
| 2728 | rc = -ENOMEM; |
| 2729 | goto out; |
| 2730 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2731 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2732 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2733 | rc = -EINVAL; |
| 2734 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | } |
| 2736 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2737 | if (volume_info->nullauth) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2738 | cFYI(1, "null user"); |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2739 | volume_info->username = ""; |
| 2740 | } else if (volume_info->username) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | /* BB fixme parse for domain name here */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2742 | cFYI(1, "Username: %s", volume_info->username); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | } else { |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 2744 | cifserror("No username specified"); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2745 | /* In userspace mount helper we can get user name from alternate |
| 2746 | locations such as env variables and files on disk */ |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2747 | rc = -EINVAL; |
| 2748 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2749 | } |
| 2750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | /* this is needed for ASCII cp to Unicode converts */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2752 | if (volume_info->iocharset == NULL) { |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 2753 | /* load_nls_default cannot return null */ |
| 2754 | volume_info->local_nls = load_nls_default(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | } else { |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 2756 | volume_info->local_nls = load_nls(volume_info->iocharset); |
| 2757 | if (volume_info->local_nls == NULL) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2758 | cERROR(1, "CIFS mount error: iocharset %s not found", |
| 2759 | volume_info->iocharset); |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2760 | rc = -ELIBACC; |
| 2761 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | } |
| 2763 | } |
Jeff Layton | a5fc4ce | 2010-04-24 07:57:42 -0400 | [diff] [blame] | 2764 | cifs_sb->local_nls = volume_info->local_nls; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 2766 | /* get a reference to a tcp session */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2767 | srvTcp = cifs_get_tcp_session(volume_info); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 2768 | if (IS_ERR(srvTcp)) { |
| 2769 | rc = PTR_ERR(srvTcp); |
| 2770 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | } |
| 2772 | |
Jeff Layton | 36988c7 | 2010-04-24 07:57:43 -0400 | [diff] [blame] | 2773 | /* get a reference to a SMB session */ |
| 2774 | pSesInfo = cifs_get_smb_ses(srvTcp, volume_info); |
| 2775 | if (IS_ERR(pSesInfo)) { |
| 2776 | rc = PTR_ERR(pSesInfo); |
| 2777 | pSesInfo = NULL; |
| 2778 | goto mount_fail_check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2779 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2780 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2781 | setup_cifs_sb(volume_info, cifs_sb); |
| 2782 | if (pSesInfo->capabilities & CAP_LARGE_FILES) |
| 2783 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 2784 | else |
| 2785 | sb->s_maxbytes = MAX_NON_LFS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2786 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2787 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | sb->s_time_gran = 100; |
| 2789 | |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2790 | /* search for existing tcon to this server share */ |
| 2791 | tcon = cifs_get_tcon(pSesInfo, volume_info); |
| 2792 | if (IS_ERR(tcon)) { |
| 2793 | rc = PTR_ERR(tcon); |
| 2794 | tcon = NULL; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2795 | goto remote_path_check; |
Jeff Layton | d00c28d | 2010-04-24 07:57:44 -0400 | [diff] [blame] | 2796 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2797 | |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2798 | /* do not care if following two calls succeed - informational */ |
| 2799 | if (!tcon->ipc) { |
| 2800 | CIFSSMBQFSDeviceInfo(xid, tcon); |
| 2801 | CIFSSMBQFSAttributeInfo(xid, tcon); |
| 2802 | } |
| 2803 | |
| 2804 | /* tell server which Unix caps we support */ |
| 2805 | if (tcon->ses->capabilities & CAP_UNIX) |
| 2806 | /* reset of caps checks mount to see if unix extensions |
| 2807 | disabled for just this mount */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2808 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2809 | else |
| 2810 | tcon->unix_ext = 0; /* server does not support them */ |
| 2811 | |
| 2812 | /* convert forward to back slashes in prepath here if needed */ |
| 2813 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
| 2814 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); |
| 2815 | |
| 2816 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
| 2817 | cifs_sb->rsize = 1024 * 127; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2818 | cFYI(DBG2, "no very large read support, rsize now 127K"); |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2819 | } |
| 2820 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
| 2821 | cifs_sb->wsize = min(cifs_sb->wsize, |
| 2822 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); |
| 2823 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
| 2824 | cifs_sb->rsize = min(cifs_sb->rsize, |
| 2825 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2827 | remote_path_check: |
| 2828 | /* check if a whole path (including prepath) is not remote */ |
| 2829 | if (!rc && cifs_sb->prepathlen && tcon) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2830 | /* build_path_to_root works only when we have a valid tcon */ |
Jeff Layton | 7d161b7 | 2010-12-07 02:10:35 -0500 | [diff] [blame] | 2831 | full_path = cifs_build_path_to_root(cifs_sb, tcon); |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2832 | if (full_path == NULL) { |
| 2833 | rc = -ENOMEM; |
| 2834 | goto mount_fail_check; |
| 2835 | } |
| 2836 | rc = is_path_accessible(xid, tcon, cifs_sb, full_path); |
Jeff Layton | 03ceace | 2010-12-06 21:07:33 -0500 | [diff] [blame] | 2837 | if (rc != 0 && rc != -EREMOTE) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2838 | kfree(full_path); |
| 2839 | goto mount_fail_check; |
| 2840 | } |
| 2841 | kfree(full_path); |
| 2842 | } |
| 2843 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2844 | /* get referral if needed */ |
| 2845 | if (rc == -EREMOTE) { |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 2846 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2847 | if (referral_walks_count > MAX_NESTED_LINKS) { |
| 2848 | /* |
| 2849 | * BB: when we implement proper loop detection, |
| 2850 | * we will remove this check. But now we need it |
| 2851 | * to prevent an indefinite loop if 'DFS tree' is |
| 2852 | * misconfigured (i.e. has loops). |
| 2853 | */ |
| 2854 | rc = -ELOOP; |
| 2855 | goto mount_fail_check; |
| 2856 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2857 | /* convert forward to back slashes in prepath here if needed */ |
| 2858 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
| 2859 | convert_delimiter(cifs_sb->prepath, |
| 2860 | CIFS_DIR_SEP(cifs_sb)); |
| 2861 | full_path = build_unc_path_to_root(volume_info, cifs_sb); |
| 2862 | if (IS_ERR(full_path)) { |
| 2863 | rc = PTR_ERR(full_path); |
| 2864 | goto mount_fail_check; |
| 2865 | } |
| 2866 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2867 | cFYI(1, "Getting referral for: %s", full_path); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2868 | rc = get_dfs_path(xid, pSesInfo , full_path + 1, |
| 2869 | cifs_sb->local_nls, &num_referrals, &referrals, |
| 2870 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2871 | if (!rc && num_referrals > 0) { |
| 2872 | char *fake_devname = NULL; |
| 2873 | |
| 2874 | if (mount_data != mount_data_global) |
| 2875 | kfree(mount_data); |
Jeff Layton | 7b91e26 | 2009-07-23 15:22:30 -0400 | [diff] [blame] | 2876 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2877 | mount_data = cifs_compose_mount_options( |
| 2878 | cifs_sb->mountdata, full_path + 1, |
| 2879 | referrals, &fake_devname); |
Jeff Layton | 7b91e26 | 2009-07-23 15:22:30 -0400 | [diff] [blame] | 2880 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2881 | free_dfs_info_array(referrals, num_referrals); |
Jeff Layton | 7b91e26 | 2009-07-23 15:22:30 -0400 | [diff] [blame] | 2882 | kfree(fake_devname); |
| 2883 | kfree(full_path); |
| 2884 | |
| 2885 | if (IS_ERR(mount_data)) { |
| 2886 | rc = PTR_ERR(mount_data); |
| 2887 | mount_data = NULL; |
| 2888 | goto mount_fail_check; |
| 2889 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2890 | |
| 2891 | if (tcon) |
| 2892 | cifs_put_tcon(tcon); |
| 2893 | else if (pSesInfo) |
| 2894 | cifs_put_smb_ses(pSesInfo); |
| 2895 | |
| 2896 | cleanup_volume_info(&volume_info); |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2897 | referral_walks_count++; |
Jeff Layton | a2934c7 | 2009-12-03 08:09:41 -0500 | [diff] [blame] | 2898 | FreeXid(xid); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2899 | goto try_mount_again; |
| 2900 | } |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 2901 | #else /* No DFS support, return error on mount */ |
| 2902 | rc = -EOPNOTSUPP; |
| 2903 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2904 | } |
| 2905 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2906 | if (rc) |
| 2907 | goto mount_fail_check; |
| 2908 | |
| 2909 | /* now, hang the tcon off of the superblock */ |
| 2910 | tlink = kzalloc(sizeof *tlink, GFP_KERNEL); |
| 2911 | if (tlink == NULL) { |
| 2912 | rc = -ENOMEM; |
| 2913 | goto mount_fail_check; |
| 2914 | } |
| 2915 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 2916 | tlink->tl_uid = pSesInfo->linux_uid; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 2917 | tlink->tl_tcon = tcon; |
| 2918 | tlink->tl_time = jiffies; |
| 2919 | set_bit(TCON_LINK_MASTER, &tlink->tl_flags); |
| 2920 | set_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 2921 | |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 2922 | cifs_sb->master_tlink = tlink; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 2923 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 2924 | tlink_rb_insert(&cifs_sb->tlink_tree, tlink); |
| 2925 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 2926 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 2927 | queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, |
| 2928 | TLINK_IDLE_EXPIRE); |
| 2929 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2930 | mount_fail_check: |
| 2931 | /* on error free sesinfo and tcon struct if needed */ |
| 2932 | if (rc) { |
| 2933 | if (mount_data != mount_data_global) |
| 2934 | kfree(mount_data); |
| 2935 | /* 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] | 2936 | /* up accidentally freeing someone elses tcon struct */ |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2937 | if (tcon) |
| 2938 | cifs_put_tcon(tcon); |
| 2939 | else if (pSesInfo) |
| 2940 | cifs_put_smb_ses(pSesInfo); |
| 2941 | else |
| 2942 | cifs_put_tcp_session(srvTcp); |
| 2943 | goto out; |
| 2944 | } |
| 2945 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2946 | /* volume_info->password is freed above when existing session found |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2947 | (in which case it is not needed anymore) but when new sesion is created |
| 2948 | the password ptr is put in the new session structure (in which case the |
| 2949 | password will be freed at unmount time) */ |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2950 | out: |
| 2951 | /* zero out password before freeing */ |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2952 | cleanup_volume_info(&volume_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | FreeXid(xid); |
| 2954 | return rc; |
| 2955 | } |
| 2956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | int |
| 2958 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, |
| 2959 | const char *tree, struct cifsTconInfo *tcon, |
| 2960 | const struct nls_table *nls_codepage) |
| 2961 | { |
| 2962 | struct smb_hdr *smb_buffer; |
| 2963 | struct smb_hdr *smb_buffer_response; |
| 2964 | TCONX_REQ *pSMB; |
| 2965 | TCONX_RSP *pSMBr; |
| 2966 | unsigned char *bcc_ptr; |
| 2967 | int rc = 0; |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 2968 | int length; |
| 2969 | __u16 bytes_left, count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | |
| 2971 | if (ses == NULL) |
| 2972 | return -EIO; |
| 2973 | |
| 2974 | smb_buffer = cifs_buf_get(); |
Steve French | ca43e3b | 2009-09-01 17:20:50 +0000 | [diff] [blame] | 2975 | if (smb_buffer == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2976 | return -ENOMEM; |
Steve French | ca43e3b | 2009-09-01 17:20:50 +0000 | [diff] [blame] | 2977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | smb_buffer_response = smb_buffer; |
| 2979 | |
| 2980 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, |
| 2981 | NULL /*no tid */ , 4 /*wct */ ); |
Steve French | 1982c34 | 2005-08-17 12:38:22 -0700 | [diff] [blame] | 2982 | |
| 2983 | smb_buffer->Mid = GetNextMid(ses->server); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2984 | smb_buffer->Uid = ses->Suid; |
| 2985 | pSMB = (TCONX_REQ *) smb_buffer; |
| 2986 | pSMBr = (TCONX_RSP *) smb_buffer_response; |
| 2987 | |
| 2988 | pSMB->AndXCommand = 0xFF; |
| 2989 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2990 | bcc_ptr = &pSMB->Password[0]; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2991 | if ((ses->server->secMode) & SECMODE_USER) { |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2992 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2993 | *bcc_ptr = 0; /* password is null byte */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2994 | bcc_ptr++; /* skip password */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2995 | /* already aligned so no need to do it below */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2996 | } else { |
Shirish Pargaonkar | 540b2e3 | 2011-01-18 22:33:54 -0600 | [diff] [blame] | 2997 | pSMB->PasswordLength = cpu_to_le16(CIFS_AUTH_RESP_SIZE); |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2998 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
| 2999 | specified as required (when that support is added to |
| 3000 | the vfs in the future) as only NTLM or the much |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3001 | weaker LANMAN (which we do not send by default) is accepted |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3002 | by Samba (not sure whether other servers allow |
| 3003 | NTLMv2 password here) */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3004 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 3005 | if ((global_secflags & CIFSSEC_MAY_LANMAN) && |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 3006 | (ses->server->secType == LANMAN)) |
Shirish Pargaonkar | d3ba50b | 2010-10-27 15:20:36 -0500 | [diff] [blame] | 3007 | calc_lanman_hash(tcon->password, ses->server->cryptkey, |
Jeff Layton | 4e53a3f | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 3008 | ses->server->secMode & |
| 3009 | SECMODE_PW_ENCRYPT ? true : false, |
| 3010 | bcc_ptr); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3011 | else |
| 3012 | #endif /* CIFS_WEAK_PW_HASH */ |
Shirish Pargaonkar | ee2c925 | 2011-01-27 09:58:04 -0600 | [diff] [blame] | 3013 | rc = SMBNTencrypt(tcon->password, ses->server->cryptkey, |
| 3014 | bcc_ptr); |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3015 | |
Shirish Pargaonkar | 540b2e3 | 2011-01-18 22:33:54 -0600 | [diff] [blame] | 3016 | bcc_ptr += CIFS_AUTH_RESP_SIZE; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 3017 | if (ses->capabilities & CAP_UNICODE) { |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 3018 | /* must align unicode strings */ |
| 3019 | *bcc_ptr = 0; /* null byte password */ |
| 3020 | bcc_ptr++; |
| 3021 | } |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 3022 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3024 | if (ses->server->secMode & |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 3025 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| 3027 | |
| 3028 | if (ses->capabilities & CAP_STATUS32) { |
| 3029 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| 3030 | } |
| 3031 | if (ses->capabilities & CAP_DFS) { |
| 3032 | smb_buffer->Flags2 |= SMBFLG2_DFS; |
| 3033 | } |
| 3034 | if (ses->capabilities & CAP_UNICODE) { |
| 3035 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| 3036 | length = |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3037 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
| 3038 | 6 /* max utf8 char length in bytes */ * |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 3039 | (/* server len*/ + 256 /* share len */), nls_codepage); |
| 3040 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3041 | bcc_ptr += 2; /* skip trailing null */ |
| 3042 | } else { /* ASCII */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | strcpy(bcc_ptr, tree); |
| 3044 | bcc_ptr += strlen(tree) + 1; |
| 3045 | } |
| 3046 | strcpy(bcc_ptr, "?????"); |
| 3047 | bcc_ptr += strlen("?????"); |
| 3048 | bcc_ptr += 1; |
| 3049 | count = bcc_ptr - &pSMB->Password[0]; |
| 3050 | pSMB->hdr.smb_buf_length += count; |
| 3051 | pSMB->ByteCount = cpu_to_le16(count); |
| 3052 | |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 3053 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
Jeff Layton | 7749981 | 2011-01-11 07:24:23 -0500 | [diff] [blame] | 3054 | 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3056 | /* above now done in SendReceive */ |
| 3057 | if ((rc == 0) && (tcon != NULL)) { |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3058 | bool is_unicode; |
| 3059 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3060 | tcon->tidStatus = CifsGood; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 3061 | tcon->need_reconnect = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | tcon->tid = smb_buffer_response->Tid; |
| 3063 | bcc_ptr = pByteArea(smb_buffer_response); |
Jeff Layton | 690c522 | 2011-01-20 13:36:51 -0500 | [diff] [blame] | 3064 | bytes_left = get_bcc(smb_buffer_response); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3065 | length = strnlen(bcc_ptr, bytes_left - 2); |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3066 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) |
| 3067 | is_unicode = true; |
| 3068 | else |
| 3069 | is_unicode = false; |
| 3070 | |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3071 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3072 | /* skip service field (NB: this field is always ASCII) */ |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3073 | if (length == 3) { |
| 3074 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && |
| 3075 | (bcc_ptr[2] == 'C')) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3076 | cFYI(1, "IPC connection"); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3077 | tcon->ipc = 1; |
| 3078 | } |
| 3079 | } else if (length == 2) { |
| 3080 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { |
| 3081 | /* the most common case */ |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3082 | cFYI(1, "disk share connection"); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 3083 | } |
| 3084 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3085 | bcc_ptr += length + 1; |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3086 | bytes_left -= (length + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3087 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3088 | |
| 3089 | /* mostly informational -- no need to fail on error here */ |
Jeff Layton | 90a98b2 | 2009-07-20 13:40:52 -0400 | [diff] [blame] | 3090 | kfree(tcon->nativeFileSystem); |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 3091 | tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr, |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 3092 | bytes_left, is_unicode, |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3093 | nls_codepage); |
| 3094 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3095 | cFYI(1, "nativeFileSystem=%s", tcon->nativeFileSystem); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 3096 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 3097 | if ((smb_buffer_response->WordCount == 3) || |
Steve French | 1a4e15a | 2006-10-12 21:33:51 +0000 | [diff] [blame] | 3098 | (smb_buffer_response->WordCount == 7)) |
| 3099 | /* field is in same location */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 3100 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
| 3101 | else |
| 3102 | tcon->Flags = 0; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3103 | cFYI(1, "Tcon flags: 0x%x ", tcon->Flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3104 | } else if ((rc == 0) && tcon == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3105 | /* all we need to save for IPC$ connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3106 | ses->ipc_tid = smb_buffer_response->Tid; |
| 3107 | } |
| 3108 | |
Mariusz Kozlowski | a8a11d3 | 2007-10-03 16:41:24 +0000 | [diff] [blame] | 3109 | cifs_buf_release(smb_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3110 | return rc; |
| 3111 | } |
| 3112 | |
| 3113 | int |
| 3114 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) |
| 3115 | { |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3116 | struct rb_root *root = &cifs_sb->tlink_tree; |
| 3117 | struct rb_node *node; |
| 3118 | struct tcon_link *tlink; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3119 | char *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3120 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3121 | cancel_delayed_work_sync(&cifs_sb->prune_tlinks); |
| 3122 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3123 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3124 | while ((node = rb_first(root))) { |
| 3125 | tlink = rb_entry(node, struct tcon_link, tl_rbnode); |
| 3126 | cifs_get_tlink(tlink); |
| 3127 | clear_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 3128 | rb_erase(node, root); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3129 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3130 | spin_unlock(&cifs_sb->tlink_tree_lock); |
| 3131 | cifs_put_tlink(tlink); |
| 3132 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3133 | } |
| 3134 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3135 | |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 3136 | tmp = cifs_sb->prepath; |
| 3137 | cifs_sb->prepathlen = 0; |
| 3138 | cifs_sb->prepath = NULL; |
| 3139 | kfree(tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3140 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3141 | return 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 3142 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3143 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3144 | int cifs_negotiate_protocol(unsigned int xid, struct cifsSesInfo *ses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3145 | { |
| 3146 | int rc = 0; |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3147 | struct TCP_Server_Info *server = ses->server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3148 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3149 | /* only send once per connect */ |
| 3150 | if (server->maxBuf != 0) |
| 3151 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3153 | rc = CIFSSMBNegotiate(xid, ses); |
| 3154 | if (rc == -EAGAIN) { |
| 3155 | /* retry only once on 1st time connection */ |
| 3156 | rc = CIFSSMBNegotiate(xid, ses); |
| 3157 | if (rc == -EAGAIN) |
| 3158 | rc = -EHOSTDOWN; |
| 3159 | } |
| 3160 | if (rc == 0) { |
| 3161 | spin_lock(&GlobalMid_Lock); |
| 3162 | if (server->tcpStatus != CifsExiting) |
| 3163 | server->tcpStatus = CifsGood; |
| 3164 | else |
| 3165 | rc = -EHOSTDOWN; |
| 3166 | spin_unlock(&GlobalMid_Lock); |
| 3167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3168 | } |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3169 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3170 | return rc; |
| 3171 | } |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3172 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3173 | |
| 3174 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *ses, |
| 3175 | struct nls_table *nls_info) |
| 3176 | { |
| 3177 | int rc = 0; |
| 3178 | struct TCP_Server_Info *server = ses->server; |
| 3179 | |
| 3180 | ses->flags = 0; |
| 3181 | ses->capabilities = server->capabilities; |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3182 | if (linuxExtEnabled == 0) |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3183 | ses->capabilities &= (~CAP_UNIX); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3184 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3185 | cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
| 3186 | server->secMode, server->capabilities, server->timeAdj); |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 3187 | |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3188 | rc = CIFS_SessSetup(xid, ses, nls_info); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3189 | if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3190 | cERROR(1, "Send error in SessSetup = %d", rc); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3191 | } else { |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3192 | mutex_lock(&ses->server->srv_mutex); |
| 3193 | if (!server->session_estab) { |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3194 | server->session_key.response = ses->auth_key.response; |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3195 | server->session_key.len = ses->auth_key.len; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3196 | server->sequence_number = 0x2; |
| 3197 | server->session_estab = true; |
| 3198 | ses->auth_key.response = NULL; |
Shirish Pargaonkar | 5d0d288 | 2010-10-13 18:15:00 -0500 | [diff] [blame] | 3199 | } |
| 3200 | mutex_unlock(&server->srv_mutex); |
| 3201 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 3202 | cFYI(1, "CIFS Session Established successfully"); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3203 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 198b568 | 2010-04-24 07:57:48 -0400 | [diff] [blame] | 3204 | ses->status = CifsGood; |
| 3205 | ses->need_reconnect = false; |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 3206 | spin_unlock(&GlobalMid_Lock); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 3207 | } |
| 3208 | |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3209 | kfree(ses->auth_key.response); |
| 3210 | ses->auth_key.response = NULL; |
| 3211 | ses->auth_key.len = 0; |
Shirish Pargaonkar | d3686d5 | 2010-10-28 09:53:07 -0500 | [diff] [blame] | 3212 | kfree(ses->ntlmssp); |
| 3213 | ses->ntlmssp = NULL; |
Shirish Pargaonkar | 21e7339 | 2010-10-21 06:42:55 -0500 | [diff] [blame] | 3214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3215 | return rc; |
| 3216 | } |
| 3217 | |
Steve French | d244555 | 2010-10-08 03:38:46 +0000 | [diff] [blame] | 3218 | static struct cifsTconInfo * |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3219 | cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) |
| 3220 | { |
| 3221 | struct cifsTconInfo *master_tcon = cifs_sb_master_tcon(cifs_sb); |
| 3222 | struct cifsSesInfo *ses; |
| 3223 | struct cifsTconInfo *tcon = NULL; |
| 3224 | struct smb_vol *vol_info; |
| 3225 | char username[MAX_USERNAME_SIZE + 1]; |
| 3226 | |
| 3227 | vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL); |
| 3228 | if (vol_info == NULL) { |
| 3229 | tcon = ERR_PTR(-ENOMEM); |
| 3230 | goto out; |
| 3231 | } |
| 3232 | |
| 3233 | snprintf(username, MAX_USERNAME_SIZE, "krb50x%x", fsuid); |
| 3234 | vol_info->username = username; |
| 3235 | vol_info->local_nls = cifs_sb->local_nls; |
| 3236 | vol_info->linux_uid = fsuid; |
| 3237 | vol_info->cred_uid = fsuid; |
| 3238 | vol_info->UNC = master_tcon->treeName; |
| 3239 | vol_info->retry = master_tcon->retry; |
| 3240 | vol_info->nocase = master_tcon->nocase; |
| 3241 | vol_info->local_lease = master_tcon->local_lease; |
| 3242 | vol_info->no_linux_ext = !master_tcon->unix_ext; |
| 3243 | |
| 3244 | /* FIXME: allow for other secFlg settings */ |
| 3245 | vol_info->secFlg = CIFSSEC_MUST_KRB5; |
| 3246 | |
| 3247 | /* get a reference for the same TCP session */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 3248 | spin_lock(&cifs_tcp_ses_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3249 | ++master_tcon->ses->server->srv_count; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 3250 | spin_unlock(&cifs_tcp_ses_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3251 | |
| 3252 | ses = cifs_get_smb_ses(master_tcon->ses->server, vol_info); |
| 3253 | if (IS_ERR(ses)) { |
| 3254 | tcon = (struct cifsTconInfo *)ses; |
| 3255 | cifs_put_tcp_session(master_tcon->ses->server); |
| 3256 | goto out; |
| 3257 | } |
| 3258 | |
| 3259 | tcon = cifs_get_tcon(ses, vol_info); |
| 3260 | if (IS_ERR(tcon)) { |
| 3261 | cifs_put_smb_ses(ses); |
| 3262 | goto out; |
| 3263 | } |
| 3264 | |
| 3265 | if (ses->capabilities & CAP_UNIX) |
| 3266 | reset_cifs_unix_caps(0, tcon, NULL, vol_info); |
| 3267 | out: |
| 3268 | kfree(vol_info); |
| 3269 | |
| 3270 | return tcon; |
| 3271 | } |
| 3272 | |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 3273 | static inline struct tcon_link * |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3274 | cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb) |
| 3275 | { |
Jeff Layton | 413e661 | 2010-10-28 13:33:38 -0400 | [diff] [blame] | 3276 | return cifs_sb->master_tlink; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3277 | } |
| 3278 | |
| 3279 | struct cifsTconInfo * |
| 3280 | cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb) |
| 3281 | { |
| 3282 | return tlink_tcon(cifs_sb_master_tlink(cifs_sb)); |
| 3283 | } |
| 3284 | |
| 3285 | static int |
| 3286 | cifs_sb_tcon_pending_wait(void *unused) |
| 3287 | { |
| 3288 | schedule(); |
| 3289 | return signal_pending(current) ? -ERESTARTSYS : 0; |
| 3290 | } |
| 3291 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3292 | /* find and return a tlink with given uid */ |
| 3293 | static struct tcon_link * |
| 3294 | tlink_rb_search(struct rb_root *root, uid_t uid) |
| 3295 | { |
| 3296 | struct rb_node *node = root->rb_node; |
| 3297 | struct tcon_link *tlink; |
| 3298 | |
| 3299 | while (node) { |
| 3300 | tlink = rb_entry(node, struct tcon_link, tl_rbnode); |
| 3301 | |
| 3302 | if (tlink->tl_uid > uid) |
| 3303 | node = node->rb_left; |
| 3304 | else if (tlink->tl_uid < uid) |
| 3305 | node = node->rb_right; |
| 3306 | else |
| 3307 | return tlink; |
| 3308 | } |
| 3309 | return NULL; |
| 3310 | } |
| 3311 | |
| 3312 | /* insert a tcon_link into the tree */ |
| 3313 | static void |
| 3314 | tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink) |
| 3315 | { |
| 3316 | struct rb_node **new = &(root->rb_node), *parent = NULL; |
| 3317 | struct tcon_link *tlink; |
| 3318 | |
| 3319 | while (*new) { |
| 3320 | tlink = rb_entry(*new, struct tcon_link, tl_rbnode); |
| 3321 | parent = *new; |
| 3322 | |
| 3323 | if (tlink->tl_uid > new_tlink->tl_uid) |
| 3324 | new = &((*new)->rb_left); |
| 3325 | else |
| 3326 | new = &((*new)->rb_right); |
| 3327 | } |
| 3328 | |
| 3329 | rb_link_node(&new_tlink->tl_rbnode, parent, new); |
| 3330 | rb_insert_color(&new_tlink->tl_rbnode, root); |
| 3331 | } |
| 3332 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3333 | /* |
| 3334 | * Find or construct an appropriate tcon given a cifs_sb and the fsuid of the |
| 3335 | * current task. |
| 3336 | * |
| 3337 | * If the superblock doesn't refer to a multiuser mount, then just return |
| 3338 | * the master tcon for the mount. |
| 3339 | * |
Suresh Jayaraman | 6ef933a | 2010-11-03 10:53:49 +0530 | [diff] [blame] | 3340 | * 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] | 3341 | * exists, then check to see if it's pending construction. If it is then wait |
| 3342 | * for construction to complete. Once it's no longer pending, check to see if |
| 3343 | * it failed and either return an error or retry construction, depending on |
| 3344 | * the timeout. |
| 3345 | * |
| 3346 | * If one doesn't exist then insert a new tcon_link struct into the tree and |
| 3347 | * try to construct a new one. |
| 3348 | */ |
| 3349 | struct tcon_link * |
| 3350 | cifs_sb_tlink(struct cifs_sb_info *cifs_sb) |
| 3351 | { |
| 3352 | int ret; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3353 | uid_t fsuid = current_fsuid(); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3354 | struct tcon_link *tlink, *newtlink; |
| 3355 | |
| 3356 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) |
| 3357 | return cifs_get_tlink(cifs_sb_master_tlink(cifs_sb)); |
| 3358 | |
| 3359 | spin_lock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3360 | tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3361 | if (tlink) |
| 3362 | cifs_get_tlink(tlink); |
| 3363 | spin_unlock(&cifs_sb->tlink_tree_lock); |
| 3364 | |
| 3365 | if (tlink == NULL) { |
| 3366 | newtlink = kzalloc(sizeof(*tlink), GFP_KERNEL); |
| 3367 | if (newtlink == NULL) |
| 3368 | return ERR_PTR(-ENOMEM); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3369 | newtlink->tl_uid = fsuid; |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3370 | newtlink->tl_tcon = ERR_PTR(-EACCES); |
| 3371 | set_bit(TCON_LINK_PENDING, &newtlink->tl_flags); |
| 3372 | set_bit(TCON_LINK_IN_TREE, &newtlink->tl_flags); |
| 3373 | cifs_get_tlink(newtlink); |
| 3374 | |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3375 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3376 | /* was one inserted after previous search? */ |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3377 | tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3378 | if (tlink) { |
| 3379 | cifs_get_tlink(tlink); |
| 3380 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3381 | kfree(newtlink); |
| 3382 | goto wait_for_construction; |
| 3383 | } |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3384 | tlink = newtlink; |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3385 | tlink_rb_insert(&cifs_sb->tlink_tree, tlink); |
| 3386 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 9d002df | 2010-10-06 19:51:11 -0400 | [diff] [blame] | 3387 | } else { |
| 3388 | wait_for_construction: |
| 3389 | ret = wait_on_bit(&tlink->tl_flags, TCON_LINK_PENDING, |
| 3390 | cifs_sb_tcon_pending_wait, |
| 3391 | TASK_INTERRUPTIBLE); |
| 3392 | if (ret) { |
| 3393 | cifs_put_tlink(tlink); |
| 3394 | return ERR_PTR(ret); |
| 3395 | } |
| 3396 | |
| 3397 | /* if it's good, return it */ |
| 3398 | if (!IS_ERR(tlink->tl_tcon)) |
| 3399 | return tlink; |
| 3400 | |
| 3401 | /* return error if we tried this already recently */ |
| 3402 | if (time_before(jiffies, tlink->tl_time + TLINK_ERROR_EXPIRE)) { |
| 3403 | cifs_put_tlink(tlink); |
| 3404 | return ERR_PTR(-EACCES); |
| 3405 | } |
| 3406 | |
| 3407 | if (test_and_set_bit(TCON_LINK_PENDING, &tlink->tl_flags)) |
| 3408 | goto wait_for_construction; |
| 3409 | } |
| 3410 | |
| 3411 | tlink->tl_tcon = cifs_construct_tcon(cifs_sb, fsuid); |
| 3412 | clear_bit(TCON_LINK_PENDING, &tlink->tl_flags); |
| 3413 | wake_up_bit(&tlink->tl_flags, TCON_LINK_PENDING); |
| 3414 | |
| 3415 | if (IS_ERR(tlink->tl_tcon)) { |
| 3416 | cifs_put_tlink(tlink); |
| 3417 | return ERR_PTR(-EACCES); |
| 3418 | } |
| 3419 | |
| 3420 | return tlink; |
| 3421 | } |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3422 | |
| 3423 | /* |
| 3424 | * periodic workqueue job that scans tcon_tree for a superblock and closes |
| 3425 | * out tcons. |
| 3426 | */ |
| 3427 | static void |
| 3428 | cifs_prune_tlinks(struct work_struct *work) |
| 3429 | { |
| 3430 | struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info, |
| 3431 | prune_tlinks.work); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3432 | struct rb_root *root = &cifs_sb->tlink_tree; |
| 3433 | struct rb_node *node = rb_first(root); |
| 3434 | struct rb_node *tmp; |
| 3435 | struct tcon_link *tlink; |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3436 | |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3437 | /* |
| 3438 | * Because we drop the spinlock in the loop in order to put the tlink |
| 3439 | * it's not guarded against removal of links from the tree. The only |
| 3440 | * places that remove entries from the tree are this function and |
| 3441 | * umounts. Because this function is non-reentrant and is canceled |
| 3442 | * before umount can proceed, this is safe. |
| 3443 | */ |
| 3444 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3445 | node = rb_first(root); |
| 3446 | while (node != NULL) { |
| 3447 | tmp = node; |
| 3448 | node = rb_next(tmp); |
| 3449 | tlink = rb_entry(tmp, struct tcon_link, tl_rbnode); |
| 3450 | |
| 3451 | if (test_bit(TCON_LINK_MASTER, &tlink->tl_flags) || |
| 3452 | atomic_read(&tlink->tl_count) != 0 || |
| 3453 | time_after(tlink->tl_time + TLINK_IDLE_EXPIRE, jiffies)) |
| 3454 | continue; |
| 3455 | |
| 3456 | cifs_get_tlink(tlink); |
| 3457 | clear_bit(TCON_LINK_IN_TREE, &tlink->tl_flags); |
| 3458 | rb_erase(tmp, root); |
| 3459 | |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3460 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | b647c35 | 2010-10-28 11:16:44 -0400 | [diff] [blame] | 3461 | cifs_put_tlink(tlink); |
| 3462 | spin_lock(&cifs_sb->tlink_tree_lock); |
| 3463 | } |
| 3464 | spin_unlock(&cifs_sb->tlink_tree_lock); |
Jeff Layton | 2de970f | 2010-10-06 19:51:12 -0400 | [diff] [blame] | 3465 | |
| 3466 | queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, |
| 3467 | TLINK_IDLE_EXPIRE); |
| 3468 | } |