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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/pagemap.h> |
| 27 | #include <linux/ctype.h> |
| 28 | #include <linux/utsname.h> |
| 29 | #include <linux/mempool.h> |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 30 | #include <linux/delay.h> |
Steve French | f191401 | 2005-08-18 09:37:34 -0700 | [diff] [blame] | 31 | #include <linux/completion.h> |
Igor Mammedov | aaf737a | 2007-04-03 19:16:43 +0000 | [diff] [blame] | 32 | #include <linux/kthread.h> |
Steve French | 0ae0efa | 2005-10-10 10:57:19 -0700 | [diff] [blame] | 33 | #include <linux/pagevec.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 34 | #include <linux/freezer.h> |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 35 | #include <linux/namei.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <asm/uaccess.h> |
| 37 | #include <asm/processor.h> |
Jeff Layton | 50b64e3 | 2009-06-02 06:55:20 -0400 | [diff] [blame] | 38 | #include <linux/inet.h> |
Steve French | 0e2beda | 2009-01-30 21:24:41 +0000 | [diff] [blame] | 39 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "cifspdu.h" |
| 41 | #include "cifsglob.h" |
| 42 | #include "cifsproto.h" |
| 43 | #include "cifs_unicode.h" |
| 44 | #include "cifs_debug.h" |
| 45 | #include "cifs_fs_sb.h" |
| 46 | #include "ntlmssp.h" |
| 47 | #include "nterr.h" |
| 48 | #include "rfc1002pdu.h" |
Steve French | a2653eb | 2005-11-10 15:33:38 -0800 | [diff] [blame] | 49 | #include "cn_cifs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #define CIFS_PORT 445 |
| 52 | #define RFC1001_PORT 139 |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
| 55 | unsigned char *p24); |
| 56 | |
| 57 | extern mempool_t *cifs_req_poolp; |
| 58 | |
| 59 | struct smb_vol { |
| 60 | char *username; |
| 61 | char *password; |
| 62 | char *domainname; |
| 63 | char *UNC; |
| 64 | char *UNCip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | char *iocharset; /* local code page for mapping to and from Unicode */ |
| 66 | char source_rfc1001_name[16]; /* netbios name of client */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 67 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | uid_t linux_uid; |
| 69 | gid_t linux_gid; |
| 70 | mode_t file_mode; |
| 71 | mode_t dir_mode; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 72 | unsigned secFlg; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 73 | bool retry:1; |
| 74 | bool intr:1; |
| 75 | bool setuids:1; |
| 76 | bool override_uid:1; |
| 77 | bool override_gid:1; |
Jeff Layton | d0a9c07 | 2008-05-12 22:23:49 +0000 | [diff] [blame] | 78 | bool dynperm:1; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 79 | bool noperm:1; |
| 80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ |
| 81 | bool cifs_acl:1; |
| 82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
| 83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ |
| 84 | bool direct_io:1; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
| 86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 87 | bool no_linux_ext:1; |
| 88 | bool sfu_emul:1; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 89 | bool nullauth:1; /* attempt to authenticate with null user */ |
| 90 | bool nocase:1; /* request case insensitive filenames */ |
| 91 | bool nobrl:1; /* disable sending byte range locks to srv */ |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 92 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 93 | bool seal:1; /* request transport encryption on share */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 94 | bool nodfs:1; /* Do not request DFS, even if available */ |
| 95 | bool local_lease:1; /* check leases only on local system, not remote */ |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 96 | bool noblocksnd:1; |
| 97 | bool noautotune:1; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 98 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | unsigned int rsize; |
| 100 | unsigned int wsize; |
| 101 | unsigned int sockopt; |
| 102 | unsigned short int port; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 103 | char *prepath; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | }; |
| 105 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 106 | static int ipv4_connect(struct TCP_Server_Info *server); |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 107 | static int ipv6_connect(struct TCP_Server_Info *server); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 109 | /* |
| 110 | * cifs tcp session reconnection |
| 111 | * |
| 112 | * mark tcp session as reconnecting so temporarily locked |
| 113 | * mark all smb sessions as reconnecting for tcp session |
| 114 | * reconnect tcp session |
| 115 | * wake up waiters on reconnection? - (not needed currently) |
| 116 | */ |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 117 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | cifs_reconnect(struct TCP_Server_Info *server) |
| 119 | { |
| 120 | int rc = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 121 | struct list_head *tmp, *tmp2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | struct cifsSesInfo *ses; |
| 123 | struct cifsTconInfo *tcon; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 124 | struct mid_q_entry *mid_entry; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 127 | if (server->tcpStatus == CifsExiting) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 128 | /* the demux thread will exit normally |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | next time through the loop */ |
| 130 | spin_unlock(&GlobalMid_Lock); |
| 131 | return rc; |
| 132 | } else |
| 133 | server->tcpStatus = CifsNeedReconnect; |
| 134 | spin_unlock(&GlobalMid_Lock); |
| 135 | server->maxBuf = 0; |
| 136 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 137 | cFYI(1, ("Reconnecting tcp session")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
| 139 | /* before reconnecting the tcp session, mark the smb session (uid) |
| 140 | and the tid bad so they are not used until reconnected */ |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 141 | read_lock(&cifs_tcp_ses_lock); |
| 142 | list_for_each(tmp, &server->smb_ses_list) { |
| 143 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); |
| 144 | ses->need_reconnect = true; |
| 145 | ses->ipc_tid = 0; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 146 | list_for_each(tmp2, &ses->tcon_list) { |
| 147 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); |
| 148 | tcon->need_reconnect = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 151 | read_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | /* do not want to be sending data on a socket we are freeing */ |
Jeff Layton | 72ca545 | 2008-12-01 07:09:36 -0500 | [diff] [blame] | 153 | mutex_lock(&server->srv_mutex); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 154 | if (server->ssocket) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 155 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | server->ssocket->flags)); |
Trond Myklebust | 91cf45f | 2007-11-12 18:10:39 -0800 | [diff] [blame] | 157 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 158 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 159 | server->ssocket->state, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | server->ssocket->flags)); |
| 161 | sock_release(server->ssocket); |
| 162 | server->ssocket = NULL; |
| 163 | } |
| 164 | |
| 165 | spin_lock(&GlobalMid_Lock); |
| 166 | list_for_each(tmp, &server->pending_mid_q) { |
| 167 | mid_entry = list_entry(tmp, struct |
| 168 | mid_q_entry, |
| 169 | qhead); |
Steve French | ad8b15f | 2008-08-08 21:10:16 +0000 | [diff] [blame] | 170 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 171 | /* Mark other intransit requests as needing |
| 172 | retry so we do not immediately mark the |
| 173 | session bad again (ie after we reconnect |
| 174 | below) as they timeout too */ |
Steve French | ad8b15f | 2008-08-08 21:10:16 +0000 | [diff] [blame] | 175 | mid_entry->midState = MID_RETRY_NEEDED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | } |
| 178 | spin_unlock(&GlobalMid_Lock); |
Jeff Layton | 72ca545 | 2008-12-01 07:09:36 -0500 | [diff] [blame] | 179 | mutex_unlock(&server->srv_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 181 | while ((server->tcpStatus != CifsExiting) && |
| 182 | (server->tcpStatus != CifsGood)) { |
Steve French | 6c3d890 | 2006-07-31 22:46:20 +0000 | [diff] [blame] | 183 | try_to_freeze(); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 184 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 185 | rc = ipv6_connect(server); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 186 | else |
| 187 | rc = ipv4_connect(server); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 188 | if (rc) { |
| 189 | cFYI(1, ("reconnect error %d", rc)); |
Steve French | 0cb766a | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 190 | msleep(3000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } else { |
| 192 | atomic_inc(&tcpSesReconnectCount); |
| 193 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 194 | if (server->tcpStatus != CifsExiting) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | server->tcpStatus = CifsGood; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 196 | server->sequence_number = 0; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 197 | spin_unlock(&GlobalMid_Lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | /* atomic_set(&server->inFlight,0);*/ |
| 199 | wake_up(&server->response_q); |
| 200 | } |
| 201 | } |
| 202 | return rc; |
| 203 | } |
| 204 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 205 | /* |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 206 | return codes: |
| 207 | 0 not a transact2, or all data present |
| 208 | >0 transact2 with that much data missing |
| 209 | -EINVAL = invalid transact2 |
| 210 | |
| 211 | */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 212 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 213 | { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 214 | struct smb_t2_rsp *pSMBt; |
| 215 | int total_data_size; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 216 | int data_in_this_rsp; |
| 217 | int remaining; |
| 218 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 219 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 220 | return 0; |
| 221 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 222 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
| 223 | /* check for parm and data offset going beyond end of smb */ |
| 224 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 225 | cFYI(1, ("invalid transact2 word count")); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 226 | return -EINVAL; |
| 227 | } |
| 228 | |
| 229 | pSMBt = (struct smb_t2_rsp *)pSMB; |
| 230 | |
| 231 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); |
| 232 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); |
| 233 | |
| 234 | remaining = total_data_size - data_in_this_rsp; |
| 235 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 236 | if (remaining == 0) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 237 | return 0; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 238 | else if (remaining < 0) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 239 | cFYI(1, ("total data %d smaller than data in frame %d", |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 240 | total_data_size, data_in_this_rsp)); |
| 241 | return -EINVAL; |
| 242 | } else { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 243 | cFYI(1, ("missing %d bytes from transact2, check next response", |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 244 | remaining)); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 245 | if (total_data_size > maxBufSize) { |
| 246 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", |
| 247 | total_data_size, maxBufSize)); |
| 248 | return -EINVAL; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 249 | } |
| 250 | return remaining; |
| 251 | } |
| 252 | } |
| 253 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 254 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 255 | { |
| 256 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; |
| 257 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; |
| 258 | int total_data_size; |
| 259 | int total_in_buf; |
| 260 | int remaining; |
| 261 | int total_in_buf2; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 262 | char *data_area_of_target; |
| 263 | char *data_area_of_buf2; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 264 | __u16 byte_count; |
| 265 | |
| 266 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); |
| 267 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 268 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 269 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); |
| 273 | |
| 274 | remaining = total_data_size - total_in_buf; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 275 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 276 | if (remaining < 0) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 277 | return -EINVAL; |
| 278 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 279 | if (remaining == 0) /* nothing to do, ignore */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 280 | return 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 281 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 282 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 283 | if (remaining < total_in_buf2) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 284 | cFYI(1, ("transact2 2nd response contains too much data")); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | /* find end of first SMB data area */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 288 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 289 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
| 290 | /* validate target area */ |
| 291 | |
| 292 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 293 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 294 | |
| 295 | data_area_of_target += total_in_buf; |
| 296 | |
| 297 | /* copy second buffer into end of first buffer */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 298 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 299 | total_in_buf += total_in_buf2; |
| 300 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); |
| 301 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); |
| 302 | byte_count += total_in_buf2; |
| 303 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); |
| 304 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 305 | byte_count = pTargetSMB->smb_buf_length; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 306 | byte_count += total_in_buf2; |
| 307 | |
| 308 | /* BB also add check that we are not beyond maximum buffer size */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 309 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 310 | pTargetSMB->smb_buf_length = byte_count; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 311 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 312 | if (remaining == total_in_buf2) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 313 | cFYI(1, ("found the last secondary response")); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 314 | return 0; /* we are done */ |
| 315 | } else /* more responses to go */ |
| 316 | return 1; |
| 317 | |
| 318 | } |
| 319 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | static int |
| 321 | cifs_demultiplex_thread(struct TCP_Server_Info *server) |
| 322 | { |
| 323 | int length; |
| 324 | unsigned int pdu_length, total_read; |
| 325 | struct smb_hdr *smb_buffer = NULL; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 326 | struct smb_hdr *bigbuf = NULL; |
| 327 | struct smb_hdr *smallbuf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | struct msghdr smb_msg; |
| 329 | struct kvec iov; |
| 330 | struct socket *csocket = server->ssocket; |
| 331 | struct list_head *tmp; |
| 332 | struct cifsSesInfo *ses; |
| 333 | struct task_struct *task_to_wake = NULL; |
| 334 | struct mid_q_entry *mid_entry; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 335 | char temp; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 336 | bool isLargeBuf = false; |
| 337 | bool isMultiRsp; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 338 | int reconnect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | current->flags |= PF_MEMALLOC; |
Pavel Emelyanov | ba25f9d | 2007-10-18 23:40:40 -0700 | [diff] [blame] | 341 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 342 | |
| 343 | length = atomic_inc_return(&tcpSesAllocCount); |
| 344 | if (length > 1) |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 345 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 346 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Rafael J. Wysocki | 8314418 | 2007-07-17 04:03:35 -0700 | [diff] [blame] | 348 | set_freezable(); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 349 | while (server->tcpStatus != CifsExiting) { |
Steve French | ede1327 | 2005-08-30 20:10:14 -0700 | [diff] [blame] | 350 | if (try_to_freeze()) |
| 351 | continue; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 352 | if (bigbuf == NULL) { |
| 353 | bigbuf = cifs_buf_get(); |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 354 | if (!bigbuf) { |
| 355 | cERROR(1, ("No memory for large SMB response")); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 356 | msleep(3000); |
| 357 | /* retry will check if exiting */ |
| 358 | continue; |
| 359 | } |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 360 | } else if (isLargeBuf) { |
| 361 | /* we are reusing a dirty large buf, clear its start */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 362 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | } |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 364 | |
| 365 | if (smallbuf == NULL) { |
| 366 | smallbuf = cifs_small_buf_get(); |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 367 | if (!smallbuf) { |
| 368 | cERROR(1, ("No memory for SMB response")); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 369 | msleep(1000); |
| 370 | /* retry will check if exiting */ |
| 371 | continue; |
| 372 | } |
| 373 | /* beginning of smb buffer is cleared in our buf_get */ |
| 374 | } else /* if existing small buf clear beginning */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 375 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 376 | |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 377 | isLargeBuf = false; |
| 378 | isMultiRsp = false; |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 379 | smb_buffer = smallbuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | iov.iov_base = smb_buffer; |
| 381 | iov.iov_len = 4; |
| 382 | smb_msg.msg_control = NULL; |
| 383 | smb_msg.msg_controllen = 0; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 384 | pdu_length = 4; /* enough to get RFC1001 header */ |
| 385 | incomplete_rcv: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | length = |
| 387 | kernel_recvmsg(csocket, &smb_msg, |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 388 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 390 | if (server->tcpStatus == CifsExiting) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | break; |
| 392 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 393 | cFYI(1, ("Reconnect after server stopped responding")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | cifs_reconnect(server); |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 395 | cFYI(1, ("call to reconnect done")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | csocket = server->ssocket; |
| 397 | continue; |
| 398 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 399 | msleep(1); /* minimum sleep to prevent looping |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | allowing socket to clear and app threads to set |
| 401 | tcpStatus CifsNeedReconnect if server hung */ |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 402 | if (pdu_length < 4) { |
| 403 | iov.iov_base = (4 - pdu_length) + |
| 404 | (char *)smb_buffer; |
| 405 | iov.iov_len = pdu_length; |
| 406 | smb_msg.msg_control = NULL; |
| 407 | smb_msg.msg_controllen = 0; |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 408 | goto incomplete_rcv; |
Steve French | c527c8a | 2008-11-03 20:46:21 +0000 | [diff] [blame] | 409 | } else |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 410 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | } else if (length <= 0) { |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 412 | if (server->tcpStatus == CifsNew) { |
| 413 | cFYI(1, ("tcp session abend after SMBnegprot")); |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 414 | /* some servers kill the TCP session rather than |
| 415 | returning an SMB negprot error, in which |
| 416 | case reconnecting here is not going to help, |
| 417 | and so simply return error to mount */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | break; |
| 419 | } |
Pavel Machek | 0fd1ffe | 2006-06-13 21:31:39 +0000 | [diff] [blame] | 420 | if (!try_to_freeze() && (length == -EINTR)) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 421 | cFYI(1, ("cifsd thread killed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | break; |
| 423 | } |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 424 | cFYI(1, ("Reconnect after unexpected peek error %d", |
Steve French | 57337e4 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 425 | length)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | cifs_reconnect(server); |
| 427 | csocket = server->ssocket; |
| 428 | wake_up(&server->response_q); |
| 429 | continue; |
Petr Tesarik | 2a97468 | 2007-11-20 02:24:08 +0000 | [diff] [blame] | 430 | } else if (length < pdu_length) { |
| 431 | cFYI(1, ("requested %d bytes but only got %d bytes", |
| 432 | pdu_length, length)); |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 433 | pdu_length -= length; |
Steve French | f01d5e1 | 2007-08-30 21:13:31 +0000 | [diff] [blame] | 434 | msleep(1); |
| 435 | goto incomplete_rcv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
Steve French | 67010fb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 437 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 438 | /* The right amount was read from socket - 4 bytes */ |
| 439 | /* so we can now interpret the length field */ |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 440 | |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 441 | /* the first byte big endian of the length field, |
| 442 | is actually not part of the length but the type |
| 443 | with the most common, zero, as regular data */ |
| 444 | temp = *((char *) smb_buffer); |
| 445 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 446 | /* Note that FC 1001 length is big endian on the wire, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 447 | but we convert it here so it is always manipulated |
| 448 | as host byte order */ |
Harvey Harrison | 5ca33c6 | 2008-07-23 17:45:58 -0700 | [diff] [blame] | 449 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 450 | smb_buffer->smb_buf_length = pdu_length; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 451 | |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 452 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 453 | |
| 454 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 455 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 456 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 457 | cFYI(1, ("Good RFC 1002 session rsp")); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 458 | continue; |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 459 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 460 | /* we get this from Windows 98 instead of |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 461 | an error on SMB negprot response */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 462 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 463 | pdu_length)); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 464 | if (server->tcpStatus == CifsNew) { |
| 465 | /* if nack on negprot (rather than |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 466 | ret of smb negprot error) reconnecting |
| 467 | not going to help, ret error to mount */ |
| 468 | break; |
| 469 | } else { |
| 470 | /* give server a second to |
| 471 | clean up before reconnect attempt */ |
| 472 | msleep(1000); |
| 473 | /* always try 445 first on reconnect |
| 474 | since we get NACK on some if we ever |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 475 | connected to port 139 (the NACK is |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 476 | since we do not begin with RFC1001 |
| 477 | session initialize frame) */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 478 | server->addr.sockAddr.sin_port = |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 479 | htons(CIFS_PORT); |
| 480 | cifs_reconnect(server); |
| 481 | csocket = server->ssocket; |
| 482 | wake_up(&server->response_q); |
| 483 | continue; |
| 484 | } |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 485 | } else if (temp != (char) 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 486 | cERROR(1, ("Unknown RFC 1002 frame")); |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 487 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
| 488 | length); |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 489 | cifs_reconnect(server); |
| 490 | csocket = server->ssocket; |
| 491 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 492 | } |
| 493 | |
| 494 | /* else we have an SMB response */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 495 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 496 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 497 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 498 | length, pdu_length+4)); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 499 | cifs_reconnect(server); |
| 500 | csocket = server->ssocket; |
| 501 | wake_up(&server->response_q); |
| 502 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 503 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 504 | |
| 505 | /* else length ok */ |
| 506 | reconnect = 0; |
| 507 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 508 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 509 | isLargeBuf = true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 510 | memcpy(bigbuf, smallbuf, 4); |
| 511 | smb_buffer = bigbuf; |
| 512 | } |
| 513 | length = 0; |
| 514 | iov.iov_base = 4 + (char *)smb_buffer; |
| 515 | iov.iov_len = pdu_length; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 516 | for (total_read = 0; total_read < pdu_length; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 517 | total_read += length) { |
| 518 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, |
| 519 | pdu_length - total_read, 0); |
Jeff Layton | 469ee61 | 2008-10-16 18:46:39 +0000 | [diff] [blame] | 520 | if ((server->tcpStatus == CifsExiting) || |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 521 | (length == -EINTR)) { |
| 522 | /* then will exit */ |
| 523 | reconnect = 2; |
| 524 | break; |
| 525 | } else if (server->tcpStatus == CifsNeedReconnect) { |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 526 | cifs_reconnect(server); |
| 527 | csocket = server->ssocket; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 528 | /* Reconnect wakes up rspns q */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 529 | /* Now we will reread sock */ |
| 530 | reconnect = 1; |
| 531 | break; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 532 | } else if ((length == -ERESTARTSYS) || |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 533 | (length == -EAGAIN)) { |
| 534 | msleep(1); /* minimum sleep to prevent looping, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 535 | allowing socket to clear and app |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 536 | threads to set tcpStatus |
| 537 | CifsNeedReconnect if server hung*/ |
Steve French | c18c732 | 2007-10-17 18:01:11 +0000 | [diff] [blame] | 538 | length = 0; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 539 | continue; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 540 | } else if (length <= 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 541 | cERROR(1, ("Received no data, expecting %d", |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 542 | pdu_length - total_read)); |
| 543 | cifs_reconnect(server); |
| 544 | csocket = server->ssocket; |
| 545 | reconnect = 1; |
| 546 | break; |
Steve French | 46810cb | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 547 | } |
| 548 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 549 | if (reconnect == 2) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 550 | break; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 551 | else if (reconnect == 1) |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 552 | continue; |
| 553 | |
| 554 | length += 4; /* account for rfc1002 hdr */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 555 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 556 | |
| 557 | dump_smb(smb_buffer, length); |
Steve French | 184ed21 | 2006-02-24 06:15:11 +0000 | [diff] [blame] | 558 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
Steve French | b387eae | 2005-10-10 14:21:15 -0700 | [diff] [blame] | 559 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 560 | continue; |
| 561 | } |
| 562 | |
| 563 | |
| 564 | task_to_wake = NULL; |
| 565 | spin_lock(&GlobalMid_Lock); |
| 566 | list_for_each(tmp, &server->pending_mid_q) { |
| 567 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 568 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 569 | if ((mid_entry->mid == smb_buffer->Mid) && |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 570 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
| 571 | (mid_entry->command == smb_buffer->Command)) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 572 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 573 | /* We have a multipart transact2 resp */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 574 | isMultiRsp = true; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 575 | if (mid_entry->resp_buf) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 576 | /* merge response - fix up 1st*/ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 577 | if (coalesce_t2(smb_buffer, |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 578 | mid_entry->resp_buf)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 579 | mid_entry->multiRsp = |
| 580 | true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 581 | break; |
| 582 | } else { |
| 583 | /* all parts received */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 584 | mid_entry->multiEnd = |
| 585 | true; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 586 | goto multi_t2_fnd; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 587 | } |
| 588 | } else { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 589 | if (!isLargeBuf) { |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 590 | cERROR(1,("1st trans2 resp needs bigbuf")); |
| 591 | /* BB maybe we can fix this up, switch |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 592 | to already allocated large buffer? */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 593 | } else { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 594 | /* Have first buffer */ |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 595 | mid_entry->resp_buf = |
| 596 | smb_buffer; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 597 | mid_entry->largeBuf = |
| 598 | true; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 599 | bigbuf = NULL; |
| 600 | } |
| 601 | } |
| 602 | break; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 603 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 604 | mid_entry->resp_buf = smb_buffer; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 605 | mid_entry->largeBuf = isLargeBuf; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 606 | multi_t2_fnd: |
| 607 | task_to_wake = mid_entry->tsk; |
| 608 | mid_entry->midState = MID_RESPONSE_RECEIVED; |
Steve French | 1047abc | 2005-10-11 19:58:06 -0700 | [diff] [blame] | 609 | #ifdef CONFIG_CIFS_STATS2 |
| 610 | mid_entry->when_received = jiffies; |
| 611 | #endif |
Steve French | 3a5ff61 | 2006-07-14 22:37:11 +0000 | [diff] [blame] | 612 | /* so we do not time out requests to server |
| 613 | which is still responding (since server could |
| 614 | be busy but not dead) */ |
| 615 | server->lstrp = jiffies; |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 616 | break; |
| 617 | } |
| 618 | } |
| 619 | spin_unlock(&GlobalMid_Lock); |
| 620 | if (task_to_wake) { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 621 | /* Was previous buf put in mpx struct for multi-rsp? */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 622 | if (!isMultiRsp) { |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 623 | /* smb buffer will be freed by user thread */ |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 624 | if (isLargeBuf) |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 625 | bigbuf = NULL; |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 626 | else |
Steve French | cd63499 | 2005-04-28 22:41:10 -0700 | [diff] [blame] | 627 | smallbuf = NULL; |
| 628 | } |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 629 | wake_up_process(task_to_wake); |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 630 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
| 631 | !isMultiRsp) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 632 | cERROR(1, ("No task to wake, unknown frame received! " |
| 633 | "NumMids %d", midCount.counter)); |
| 634 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, |
Steve French | 70ca734 | 2005-09-22 16:32:06 -0700 | [diff] [blame] | 635 | sizeof(struct smb_hdr)); |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 636 | #ifdef CONFIG_CIFS_DEBUG2 |
| 637 | cifs_dump_detail(smb_buffer); |
| 638 | cifs_dump_mids(server); |
| 639 | #endif /* CIFS_DEBUG2 */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 640 | |
Steve French | e4eb295 | 2005-04-28 22:41:09 -0700 | [diff] [blame] | 641 | } |
| 642 | } /* end while !EXITING */ |
| 643 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 644 | /* take it off the list, if it's not already */ |
| 645 | write_lock(&cifs_tcp_ses_lock); |
| 646 | list_del_init(&server->tcp_ses_list); |
| 647 | write_unlock(&cifs_tcp_ses_lock); |
| 648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | spin_lock(&GlobalMid_Lock); |
| 650 | server->tcpStatus = CifsExiting; |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 651 | spin_unlock(&GlobalMid_Lock); |
Steve French | dbdbb87 | 2008-06-10 21:21:56 +0000 | [diff] [blame] | 652 | wake_up_all(&server->response_q); |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 653 | |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 654 | /* check if we have blocked requests that need to free */ |
| 655 | /* Note that cifs_max_pending is normally 50, but |
| 656 | can be set at module install time to as little as two */ |
Steve French | e691b9d | 2008-05-11 15:53:33 +0000 | [diff] [blame] | 657 | spin_lock(&GlobalMid_Lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 658 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 659 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
| 660 | /* We do not want to set the max_pending too low or we |
| 661 | could end up with the counter going negative */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | spin_unlock(&GlobalMid_Lock); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 663 | /* Although there should not be any requests blocked on |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | 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] | 665 | 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] | 666 | to the same server - they now will see the session is in exit state |
| 667 | and get out of SendReceive. */ |
| 668 | wake_up_all(&server->request_q); |
| 669 | /* give those requests time to exit */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 670 | msleep(125); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 671 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 672 | if (server->ssocket) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | sock_release(csocket); |
| 674 | server->ssocket = NULL; |
| 675 | } |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 676 | /* 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] | 677 | cifs_buf_release(bigbuf); |
| 678 | if (smallbuf) /* no sense logging a debug message if NULL */ |
Steve French | b8643e1 | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 679 | cifs_small_buf_release(smallbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 681 | /* |
| 682 | * BB: we shouldn't have to do any of this. It shouldn't be |
| 683 | * possible to exit from the thread with active SMB sessions |
| 684 | */ |
| 685 | read_lock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | if (list_empty(&server->pending_mid_q)) { |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 687 | /* loop through server session structures attached to this and |
| 688 | mark them dead */ |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 689 | list_for_each(tmp, &server->smb_ses_list) { |
| 690 | ses = list_entry(tmp, struct cifsSesInfo, |
| 691 | smb_ses_list); |
| 692 | ses->status = CifsExiting; |
| 693 | ses->server = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 695 | read_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | } else { |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 697 | /* although we can not zero the server struct pointer yet, |
| 698 | since there are active requests which may depnd on them, |
| 699 | mark the corresponding SMB sessions as exiting too */ |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 700 | list_for_each(tmp, &server->smb_ses_list) { |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 701 | ses = list_entry(tmp, struct cifsSesInfo, |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 702 | smb_ses_list); |
| 703 | ses->status = CifsExiting; |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 704 | } |
| 705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | spin_lock(&GlobalMid_Lock); |
| 707 | list_for_each(tmp, &server->pending_mid_q) { |
| 708 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); |
| 709 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 710 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
| 711 | mid_entry->mid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | task_to_wake = mid_entry->tsk; |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 713 | if (task_to_wake) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | wake_up_process(task_to_wake); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | } |
| 717 | spin_unlock(&GlobalMid_Lock); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 718 | read_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* 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] | 720 | msleep(125); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | } |
| 722 | |
Steve French | f191401 | 2005-08-18 09:37:34 -0700 | [diff] [blame] | 723 | if (!list_empty(&server->pending_mid_q)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 724 | /* mpx threads have not exited yet give them |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | at least the smb send timeout time for long ops */ |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 726 | /* due to delays on oplock break requests, we need |
| 727 | to wait at least 45 seconds before giving up |
| 728 | on a request getting a response and going ahead |
| 729 | and killing cifsd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | cFYI(1, ("Wait for exit from demultiplex thread")); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 731 | msleep(46000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | /* if threads still have not exited they are probably never |
| 733 | coming home not much else we can do but free the memory */ |
| 734 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 736 | /* last chance to mark ses pointers invalid |
| 737 | if there are any pointing to this (e.g |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 738 | if a crazy root user tried to kill cifsd |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 739 | kernel thread explicitly this might happen) */ |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 740 | /* BB: This shouldn't be necessary, see above */ |
| 741 | read_lock(&cifs_tcp_ses_lock); |
| 742 | list_for_each(tmp, &server->smb_ses_list) { |
| 743 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); |
| 744 | ses->server = NULL; |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 745 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 746 | read_unlock(&cifs_tcp_ses_lock); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 747 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 748 | kfree(server->hostname); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 749 | task_to_wake = xchg(&server->tsk, NULL); |
Steve French | 31ca3bc | 2005-04-28 22:41:11 -0700 | [diff] [blame] | 750 | kfree(server); |
Jeff Layton | 93d0ec8 | 2008-08-02 08:00:48 -0400 | [diff] [blame] | 751 | |
| 752 | length = atomic_dec_return(&tcpSesAllocCount); |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 753 | if (length > 0) |
| 754 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
| 755 | GFP_KERNEL); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 756 | |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 757 | /* if server->tsk was NULL then wait for a signal before exiting */ |
| 758 | if (!task_to_wake) { |
| 759 | set_current_state(TASK_INTERRUPTIBLE); |
| 760 | while (!signal_pending(current)) { |
| 761 | schedule(); |
| 762 | set_current_state(TASK_INTERRUPTIBLE); |
| 763 | } |
| 764 | set_current_state(TASK_RUNNING); |
| 765 | } |
| 766 | |
Jeff Layton | 0468a2c | 2008-12-01 07:09:35 -0500 | [diff] [blame] | 767 | module_put_and_exit(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | } |
| 769 | |
Jeff Layton | c359cf3 | 2007-11-16 22:22:06 +0000 | [diff] [blame] | 770 | /* extract the host portion of the UNC string */ |
| 771 | static char * |
| 772 | extract_hostname(const char *unc) |
| 773 | { |
| 774 | const char *src; |
| 775 | char *dst, *delim; |
| 776 | unsigned int len; |
| 777 | |
| 778 | /* skip double chars at beginning of string */ |
| 779 | /* BB: check validity of these bytes? */ |
| 780 | src = unc + 2; |
| 781 | |
| 782 | /* delimiter between hostname and sharename is always '\\' now */ |
| 783 | delim = strchr(src, '\\'); |
| 784 | if (!delim) |
| 785 | return ERR_PTR(-EINVAL); |
| 786 | |
| 787 | len = delim - src; |
| 788 | dst = kmalloc((len + 1), GFP_KERNEL); |
| 789 | if (dst == NULL) |
| 790 | return ERR_PTR(-ENOMEM); |
| 791 | |
| 792 | memcpy(dst, src, len); |
| 793 | dst[len] = '\0'; |
| 794 | |
| 795 | return dst; |
| 796 | } |
| 797 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | static int |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 799 | cifs_parse_mount_options(char *options, const char *devname, |
| 800 | struct smb_vol *vol) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | { |
| 802 | char *value; |
| 803 | char *data; |
| 804 | unsigned int temp_len, i, j; |
| 805 | char separator[2]; |
| 806 | |
| 807 | separator[0] = ','; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 808 | separator[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | |
Linus Torvalds | 12e36b2 | 2006-10-13 08:09:29 -0700 | [diff] [blame] | 810 | if (Local_System_Name[0] != 0) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 811 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 812 | else { |
Linus Torvalds | 12e36b2 | 2006-10-13 08:09:29 -0700 | [diff] [blame] | 813 | char *nodename = utsname()->nodename; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 814 | int n = strnlen(nodename, 15); |
| 815 | memset(vol->source_rfc1001_name, 0x20, 15); |
| 816 | for (i = 0; i < n; i++) { |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 817 | /* does not have to be perfect mapping since field is |
| 818 | informational, only used for servers that do not support |
| 819 | port 445 and it can be overridden at mount time */ |
Linus Torvalds | 12e36b2 | 2006-10-13 08:09:29 -0700 | [diff] [blame] | 820 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
Steve French | 2cd646a | 2006-09-28 19:43:08 +0000 | [diff] [blame] | 821 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | vol->source_rfc1001_name[15] = 0; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 824 | /* null target name indicates to use *SMBSERVR default called name |
| 825 | if we end up sending RFC1001 session initialize */ |
| 826 | vol->target_rfc1001_name[0] = 0; |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 827 | vol->linux_uid = current_uid(); /* use current_euid() instead? */ |
| 828 | vol->linux_gid = current_gid(); |
Jeff Layton | f55ed1a | 2009-05-26 16:28:11 -0400 | [diff] [blame] | 829 | |
| 830 | /* default to only allowing write access to owner of the mount */ |
| 831 | vol->dir_mode = vol->file_mode = S_IRUGO | S_IXUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
| 833 | /* 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] | 834 | /* default is always to request posix paths. */ |
| 835 | vol->posix_paths = 1; |
Jeff Layton | a0c9217 | 2009-05-27 15:40:47 -0400 | [diff] [blame] | 836 | /* default to using server inode numbers where available */ |
| 837 | vol->server_ino = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 838 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | if (!options) |
| 840 | return 1; |
| 841 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 842 | if (strncmp(options, "sep=", 4) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 843 | if (options[4] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | separator[0] = options[4]; |
| 845 | options += 5; |
| 846 | } else { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 847 | cFYI(1, ("Null separator not allowed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | } |
| 849 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 850 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | while ((data = strsep(&options, separator)) != NULL) { |
| 852 | if (!*data) |
| 853 | continue; |
| 854 | if ((value = strchr(data, '=')) != NULL) |
| 855 | *value++ = '\0'; |
| 856 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 857 | /* Have to parse this before we parse for "user" */ |
| 858 | if (strnicmp(data, "user_xattr", 10) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | vol->no_xattr = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 860 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | vol->no_xattr = 1; |
| 862 | } else if (strnicmp(data, "user", 4) == 0) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 863 | if (!value) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | printk(KERN_WARNING |
| 865 | "CIFS: invalid or missing username\n"); |
| 866 | return 1; /* needs_arg; */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 867 | } else if (!*value) { |
Steve French | 4b952a9 | 2006-10-30 21:46:13 +0000 | [diff] [blame] | 868 | /* null user, ie anonymous, authentication */ |
| 869 | vol->nullauth = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
| 871 | if (strnlen(value, 200) < 200) { |
| 872 | vol->username = value; |
| 873 | } else { |
| 874 | printk(KERN_WARNING "CIFS: username too long\n"); |
| 875 | return 1; |
| 876 | } |
| 877 | } else if (strnicmp(data, "pass", 4) == 0) { |
| 878 | if (!value) { |
| 879 | vol->password = NULL; |
| 880 | continue; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 881 | } else if (value[0] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | /* check if string begins with double comma |
| 883 | since that would mean the password really |
| 884 | does start with a comma, and would not |
| 885 | indicate an empty string */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 886 | if (value[1] != separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | vol->password = NULL; |
| 888 | continue; |
| 889 | } |
| 890 | } |
| 891 | temp_len = strlen(value); |
| 892 | /* removed password length check, NTLM passwords |
| 893 | can be arbitrarily long */ |
| 894 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 895 | /* if comma in password, the string will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | prematurely null terminated. Commas in password are |
| 897 | specified across the cifs mount interface by a double |
| 898 | comma ie ,, and a comma used as in other cases ie ',' |
| 899 | as a parameter delimiter/separator is single and due |
| 900 | to the strsep above is temporarily zeroed. */ |
| 901 | |
| 902 | /* NB: password legally can have multiple commas and |
| 903 | the only illegal character in a password is null */ |
| 904 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 905 | if ((value[temp_len] == 0) && |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 906 | (value[temp_len+1] == separator[0])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | /* reinsert comma */ |
| 908 | value[temp_len] = separator[0]; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 909 | temp_len += 2; /* move after second comma */ |
| 910 | while (value[temp_len] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | if (value[temp_len] == separator[0]) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 912 | if (value[temp_len+1] == |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 913 | separator[0]) { |
| 914 | /* skip second comma */ |
| 915 | temp_len++; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 916 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | /* single comma indicating start |
| 918 | of next parm */ |
| 919 | break; |
| 920 | } |
| 921 | } |
| 922 | temp_len++; |
| 923 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 924 | if (value[temp_len] == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | options = NULL; |
| 926 | } else { |
| 927 | value[temp_len] = 0; |
| 928 | /* point option to start of next parm */ |
| 929 | options = value + temp_len + 1; |
| 930 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 931 | /* go from value to value + temp_len condensing |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | double commas to singles. Note that this ends up |
| 933 | allocating a few bytes too many, which is ok */ |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 934 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 935 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 936 | printk(KERN_WARNING "CIFS: no memory " |
| 937 | "for password\n"); |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 938 | return 1; |
| 939 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 940 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | vol->password[j] = value[i]; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 942 | if (value[i] == separator[0] |
Steve French | 09d1db5 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 943 | && value[i+1] == separator[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | /* skip second comma */ |
| 945 | i++; |
| 946 | } |
| 947 | } |
| 948 | vol->password[j] = 0; |
| 949 | } else { |
Pekka Enberg | e915fc4 | 2005-09-06 15:18:35 -0700 | [diff] [blame] | 950 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 951 | if (vol->password == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 952 | printk(KERN_WARNING "CIFS: no memory " |
| 953 | "for password\n"); |
Steve French | 433dc24 | 2005-04-28 22:41:08 -0700 | [diff] [blame] | 954 | return 1; |
| 955 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | strcpy(vol->password, value); |
| 957 | } |
Jeff Layton | 58f7f68 | 2009-06-10 09:57:55 -0400 | [diff] [blame] | 958 | } else if (!strnicmp(data, "ip", 2) || |
| 959 | !strnicmp(data, "addr", 4)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | if (!value || !*value) { |
| 961 | vol->UNCip = NULL; |
Jeff Layton | 50b64e3 | 2009-06-02 06:55:20 -0400 | [diff] [blame] | 962 | } else if (strnlen(value, INET6_ADDRSTRLEN) < |
| 963 | INET6_ADDRSTRLEN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | vol->UNCip = value; |
| 965 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 966 | printk(KERN_WARNING "CIFS: ip address " |
| 967 | "too long\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | return 1; |
| 969 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 970 | } else if (strnicmp(data, "sec", 3) == 0) { |
| 971 | if (!value || !*value) { |
| 972 | cERROR(1, ("no security value specified")); |
| 973 | continue; |
| 974 | } else if (strnicmp(value, "krb5i", 5) == 0) { |
| 975 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 976 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 977 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 978 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
| 979 | CIFSSEC_MAY_KRB5; */ |
| 980 | cERROR(1, ("Krb5 cifs privacy not supported")); |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 981 | return 1; |
| 982 | } else if (strnicmp(value, "krb5", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 983 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
Steve French | ac68392 | 2009-05-06 04:16:04 +0000 | [diff] [blame] | 984 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 985 | } else if (strnicmp(value, "ntlmsspi", 8) == 0) { |
| 986 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP | |
| 987 | CIFSSEC_MUST_SIGN; |
| 988 | } else if (strnicmp(value, "ntlmssp", 7) == 0) { |
| 989 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP; |
| 990 | #endif |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 991 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 992 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 993 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 994 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 995 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 996 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 997 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 998 | CIFSSEC_MUST_SIGN; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 999 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
| 1000 | /* ntlm is default so can be turned off too */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1001 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1002 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1003 | /* BB is there a better way to do this? */ |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1004 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1005 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
| 1006 | } else if (strnicmp(value, "lanman", 6) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1007 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1008 | #endif |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 1009 | } else if (strnicmp(value, "none", 4) == 0) { |
Steve French | 189acaa | 2006-06-23 02:33:48 +0000 | [diff] [blame] | 1010 | vol->nullauth = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1011 | } else { |
| 1012 | cERROR(1, ("bad security option: %s", value)); |
| 1013 | return 1; |
| 1014 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | } else if ((strnicmp(data, "unc", 3) == 0) |
| 1016 | || (strnicmp(data, "target", 6) == 0) |
| 1017 | || (strnicmp(data, "path", 4) == 0)) { |
| 1018 | if (!value || !*value) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1019 | printk(KERN_WARNING "CIFS: invalid path to " |
| 1020 | "network resource\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | return 1; /* needs_arg; */ |
| 1022 | } |
| 1023 | if ((temp_len = strnlen(value, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1024 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1025 | if (vol->UNC == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | return 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1027 | strcpy(vol->UNC, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1029 | vol->UNC[0] = '\\'; |
| 1030 | vol->UNC[1] = '\\'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1031 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | printk(KERN_WARNING |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1033 | "CIFS: UNC Path does not begin " |
| 1034 | "with // or \\\\ \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | return 1; |
| 1036 | } |
| 1037 | } else { |
| 1038 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| 1039 | return 1; |
| 1040 | } |
| 1041 | } else if ((strnicmp(data, "domain", 3) == 0) |
| 1042 | || (strnicmp(data, "workgroup", 5) == 0)) { |
| 1043 | if (!value || !*value) { |
| 1044 | printk(KERN_WARNING "CIFS: invalid domain name\n"); |
| 1045 | return 1; /* needs_arg; */ |
| 1046 | } |
| 1047 | /* BB are there cases in which a comma can be valid in |
| 1048 | a domain name and need special handling? */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1049 | if (strnlen(value, 256) < 256) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | vol->domainname = value; |
| 1051 | cFYI(1, ("Domain name set")); |
| 1052 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1053 | printk(KERN_WARNING "CIFS: domain name too " |
| 1054 | "long\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | return 1; |
| 1056 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1057 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
| 1058 | if (!value || !*value) { |
| 1059 | printk(KERN_WARNING |
| 1060 | "CIFS: invalid path prefix\n"); |
| 1061 | return 1; /* needs_argument */ |
| 1062 | } |
| 1063 | if ((temp_len = strnlen(value, 1024)) < 1024) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1064 | if (value[0] != '/') |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1065 | temp_len++; /* missing leading slash */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1066 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
| 1067 | if (vol->prepath == NULL) |
| 1068 | return 1; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1069 | if (value[0] != '/') { |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1070 | vol->prepath[0] = '/'; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1071 | strcpy(vol->prepath+1, value); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 1072 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1073 | strcpy(vol->prepath, value); |
| 1074 | cFYI(1, ("prefix path %s", vol->prepath)); |
| 1075 | } else { |
| 1076 | printk(KERN_WARNING "CIFS: prefix too long\n"); |
| 1077 | return 1; |
| 1078 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
| 1080 | if (!value || !*value) { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1081 | printk(KERN_WARNING "CIFS: invalid iocharset " |
| 1082 | "specified\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | return 1; /* needs_arg; */ |
| 1084 | } |
| 1085 | if (strnlen(value, 65) < 65) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1086 | if (strnicmp(value, "default", 7)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | vol->iocharset = value; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1088 | /* if iocharset not set then load_nls_default |
| 1089 | is used by caller */ |
| 1090 | cFYI(1, ("iocharset set to %s", value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | } else { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1092 | printk(KERN_WARNING "CIFS: iocharset name " |
| 1093 | "too long.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | return 1; |
| 1095 | } |
| 1096 | } else if (strnicmp(data, "uid", 3) == 0) { |
Jeff Layton | 4ae1507 | 2009-05-24 18:45:15 -0400 | [diff] [blame] | 1097 | if (value && *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | vol->linux_uid = |
| 1099 | simple_strtoul(value, &value, 0); |
Jeff Layton | 4ae1507 | 2009-05-24 18:45:15 -0400 | [diff] [blame] | 1100 | } else if (strnicmp(data, "forceuid", 8) == 0) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1101 | vol->override_uid = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | } else if (strnicmp(data, "gid", 3) == 0) { |
Jeff Layton | 4ae1507 | 2009-05-24 18:45:15 -0400 | [diff] [blame] | 1103 | if (value && *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | vol->linux_gid = |
| 1105 | simple_strtoul(value, &value, 0); |
Jeff Layton | 4ae1507 | 2009-05-24 18:45:15 -0400 | [diff] [blame] | 1106 | } else if (strnicmp(data, "forcegid", 8) == 0) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1107 | vol->override_gid = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | } else if (strnicmp(data, "file_mode", 4) == 0) { |
| 1109 | if (value && *value) { |
| 1110 | vol->file_mode = |
| 1111 | simple_strtoul(value, &value, 0); |
| 1112 | } |
| 1113 | } else if (strnicmp(data, "dir_mode", 4) == 0) { |
| 1114 | if (value && *value) { |
| 1115 | vol->dir_mode = |
| 1116 | simple_strtoul(value, &value, 0); |
| 1117 | } |
| 1118 | } else if (strnicmp(data, "dirmode", 4) == 0) { |
| 1119 | if (value && *value) { |
| 1120 | vol->dir_mode = |
| 1121 | simple_strtoul(value, &value, 0); |
| 1122 | } |
| 1123 | } else if (strnicmp(data, "port", 4) == 0) { |
| 1124 | if (value && *value) { |
| 1125 | vol->port = |
| 1126 | simple_strtoul(value, &value, 0); |
| 1127 | } |
| 1128 | } else if (strnicmp(data, "rsize", 5) == 0) { |
| 1129 | if (value && *value) { |
| 1130 | vol->rsize = |
| 1131 | simple_strtoul(value, &value, 0); |
| 1132 | } |
| 1133 | } else if (strnicmp(data, "wsize", 5) == 0) { |
| 1134 | if (value && *value) { |
| 1135 | vol->wsize = |
| 1136 | simple_strtoul(value, &value, 0); |
| 1137 | } |
| 1138 | } else if (strnicmp(data, "sockopt", 5) == 0) { |
| 1139 | if (value && *value) { |
| 1140 | vol->sockopt = |
| 1141 | simple_strtoul(value, &value, 0); |
| 1142 | } |
| 1143 | } else if (strnicmp(data, "netbiosname", 4) == 0) { |
| 1144 | if (!value || !*value || (*value == ' ')) { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1145 | cFYI(1, ("invalid (empty) netbiosname")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | } else { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1147 | memset(vol->source_rfc1001_name, 0x20, 15); |
| 1148 | for (i = 0; i < 15; i++) { |
| 1149 | /* BB are there cases in which a comma can be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | valid in this workstation netbios name (and need |
| 1151 | special handling)? */ |
| 1152 | |
| 1153 | /* We do not uppercase netbiosname for user */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1154 | if (value[i] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | break; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1156 | else |
| 1157 | vol->source_rfc1001_name[i] = |
| 1158 | value[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
| 1160 | /* The string has 16th byte zero still from |
| 1161 | set at top of the function */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1162 | if ((i == 15) && (value[i] != 0)) |
| 1163 | printk(KERN_WARNING "CIFS: netbiosname" |
| 1164 | " longer than 15 truncated.\n"); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1165 | } |
| 1166 | } else if (strnicmp(data, "servern", 7) == 0) { |
| 1167 | /* servernetbiosname specified override *SMBSERVER */ |
| 1168 | if (!value || !*value || (*value == ' ')) { |
Steve French | 467a8f8 | 2007-06-27 22:41:32 +0000 | [diff] [blame] | 1169 | cFYI(1, ("empty server netbiosname specified")); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1170 | } else { |
| 1171 | /* last byte, type, is 0x20 for servr type */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1172 | memset(vol->target_rfc1001_name, 0x20, 16); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1173 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1174 | for (i = 0; i < 15; i++) { |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1175 | /* BB are there cases in which a comma can be |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1176 | valid in this workstation netbios name |
| 1177 | (and need special handling)? */ |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1178 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1179 | /* user or mount helper must uppercase |
| 1180 | the netbiosname */ |
| 1181 | if (value[i] == 0) |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1182 | break; |
| 1183 | else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1184 | vol->target_rfc1001_name[i] = |
| 1185 | value[i]; |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1186 | } |
| 1187 | /* The string has 16th byte zero still from |
| 1188 | set at top of the function */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1189 | if ((i == 15) && (value[i] != 0)) |
| 1190 | printk(KERN_WARNING "CIFS: server net" |
| 1191 | "biosname longer than 15 truncated.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | } |
| 1193 | } else if (strnicmp(data, "credentials", 4) == 0) { |
| 1194 | /* ignore */ |
| 1195 | } else if (strnicmp(data, "version", 3) == 0) { |
| 1196 | /* ignore */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1197 | } else if (strnicmp(data, "guest", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | /* ignore */ |
Steve French | 71a394f | 2009-06-26 04:07:18 +0000 | [diff] [blame] | 1199 | } else if (strnicmp(data, "rw", 2) == 0) { |
| 1200 | /* ignore */ |
| 1201 | } else if (strnicmp(data, "ro", 2) == 0) { |
| 1202 | /* ignore */ |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1203 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
| 1204 | vol->noblocksnd = 1; |
| 1205 | } else if (strnicmp(data, "noautotune", 10) == 0) { |
| 1206 | vol->noautotune = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | } else if ((strnicmp(data, "suid", 4) == 0) || |
| 1208 | (strnicmp(data, "nosuid", 6) == 0) || |
| 1209 | (strnicmp(data, "exec", 4) == 0) || |
| 1210 | (strnicmp(data, "noexec", 6) == 0) || |
| 1211 | (strnicmp(data, "nodev", 5) == 0) || |
| 1212 | (strnicmp(data, "noauto", 6) == 0) || |
| 1213 | (strnicmp(data, "dev", 3) == 0)) { |
| 1214 | /* The mount tool or mount.cifs helper (if present) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1215 | uses these opts to set flags, and the flags are read |
| 1216 | by the kernel vfs layer before we get here (ie |
| 1217 | before read super) so there is no point trying to |
| 1218 | parse these options again and set anything and it |
| 1219 | is ok to just ignore them */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } else if (strnicmp(data, "hard", 4) == 0) { |
| 1222 | vol->retry = 1; |
| 1223 | } else if (strnicmp(data, "soft", 4) == 0) { |
| 1224 | vol->retry = 0; |
| 1225 | } else if (strnicmp(data, "perm", 4) == 0) { |
| 1226 | vol->noperm = 0; |
| 1227 | } else if (strnicmp(data, "noperm", 6) == 0) { |
| 1228 | vol->noperm = 1; |
Steve French | 6a0b482 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 1229 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
| 1230 | vol->remap = 1; |
| 1231 | } else if (strnicmp(data, "nomapchars", 10) == 0) { |
| 1232 | vol->remap = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1233 | } else if (strnicmp(data, "sfu", 3) == 0) { |
| 1234 | vol->sfu_emul = 1; |
| 1235 | } else if (strnicmp(data, "nosfu", 5) == 0) { |
| 1236 | vol->sfu_emul = 0; |
Steve French | 2c1b861 | 2008-10-16 18:35:21 +0000 | [diff] [blame] | 1237 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
| 1238 | vol->nodfs = 1; |
Jeremy Allison | ac67055 | 2005-06-22 17:26:35 -0700 | [diff] [blame] | 1239 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
| 1240 | vol->posix_paths = 1; |
| 1241 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { |
| 1242 | vol->posix_paths = 0; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1243 | } else if (strnicmp(data, "nounix", 6) == 0) { |
| 1244 | vol->no_linux_ext = 1; |
| 1245 | } else if (strnicmp(data, "nolinux", 7) == 0) { |
| 1246 | vol->no_linux_ext = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1247 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1248 | (strnicmp(data, "ignorecase", 10) == 0)) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1249 | vol->nocase = 1; |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1250 | } else if (strnicmp(data, "brl", 3) == 0) { |
| 1251 | vol->nobrl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1252 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
Steve French | 1c95518 | 2005-08-30 20:58:07 -0700 | [diff] [blame] | 1253 | (strnicmp(data, "nolock", 6) == 0)) { |
Steve French | c46fa8a | 2005-08-18 20:49:57 -0700 | [diff] [blame] | 1254 | vol->nobrl = 1; |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1255 | /* turn off mandatory locking in mode |
| 1256 | if remote locking is turned off since the |
| 1257 | local vfs will do advisory */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1258 | if (vol->file_mode == |
| 1259 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) |
Steve French | d3485d3 | 2005-08-19 11:04:29 -0700 | [diff] [blame] | 1260 | vol->file_mode = S_IALLUGO; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 1261 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
| 1262 | /* will take the shorter form "forcemand" as well */ |
| 1263 | /* This mount option will force use of mandatory |
| 1264 | (DOS/Windows style) byte range locks, instead of |
| 1265 | using posix advisory byte range locks, even if the |
| 1266 | Unix extensions are available and posix locks would |
| 1267 | be supported otherwise. If Unix extensions are not |
| 1268 | negotiated this has no effect since mandatory locks |
| 1269 | would be used (mandatory locks is all that those |
| 1270 | those servers support) */ |
| 1271 | vol->mand_lock = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | } else if (strnicmp(data, "setuids", 7) == 0) { |
| 1273 | vol->setuids = 1; |
| 1274 | } else if (strnicmp(data, "nosetuids", 9) == 0) { |
| 1275 | vol->setuids = 0; |
Jeff Layton | d0a9c07 | 2008-05-12 22:23:49 +0000 | [diff] [blame] | 1276 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
| 1277 | vol->dynperm = true; |
| 1278 | } else if (strnicmp(data, "nodynperm", 9) == 0) { |
| 1279 | vol->dynperm = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | } else if (strnicmp(data, "nohard", 6) == 0) { |
| 1281 | vol->retry = 0; |
| 1282 | } else if (strnicmp(data, "nosoft", 6) == 0) { |
| 1283 | vol->retry = 1; |
| 1284 | } else if (strnicmp(data, "nointr", 6) == 0) { |
| 1285 | vol->intr = 0; |
| 1286 | } else if (strnicmp(data, "intr", 4) == 0) { |
| 1287 | vol->intr = 1; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 1288 | } else if (strnicmp(data, "nostrictsync", 12) == 0) { |
| 1289 | vol->nostrictsync = 1; |
| 1290 | } else if (strnicmp(data, "strictsync", 10) == 0) { |
| 1291 | vol->nostrictsync = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1292 | } else if (strnicmp(data, "serverino", 7) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | vol->server_ino = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1294 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | vol->server_ino = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1296 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 1297 | vol->cifs_acl = 1; |
| 1298 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { |
| 1299 | vol->cifs_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1300 | } else if (strnicmp(data, "acl", 3) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | vol->no_psx_acl = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1302 | } else if (strnicmp(data, "noacl", 5) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | vol->no_psx_acl = 1; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1304 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 1305 | } else if (strnicmp(data, "locallease", 6) == 0) { |
| 1306 | vol->local_lease = 1; |
| 1307 | #endif |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1308 | } else if (strnicmp(data, "sign", 4) == 0) { |
Steve French | 750d115 | 2006-06-27 06:28:30 +0000 | [diff] [blame] | 1309 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 1310 | } else if (strnicmp(data, "seal", 4) == 0) { |
| 1311 | /* we do not do the following in secFlags because seal |
| 1312 | is a per tree connection (mount) not a per socket |
| 1313 | or per-smb connection option in the protocol */ |
| 1314 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ |
| 1315 | vol->seal = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1316 | } else if (strnicmp(data, "direct", 6) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | vol->direct_io = 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1318 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | vol->direct_io = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | } else if (strnicmp(data, "noac", 4) == 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1321 | printk(KERN_WARNING "CIFS: Mount option noac not " |
| 1322 | "supported. Instead set " |
| 1323 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | } else |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1325 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
| 1326 | data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | } |
| 1328 | if (vol->UNC == NULL) { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1329 | if (devname == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1330 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
| 1331 | "target\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | return 1; |
| 1333 | } |
| 1334 | if ((temp_len = strnlen(devname, 300)) < 300) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1335 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1336 | if (vol->UNC == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | return 1; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1338 | strcpy(vol->UNC, devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | if (strncmp(vol->UNC, "//", 2) == 0) { |
| 1340 | vol->UNC[0] = '\\'; |
| 1341 | vol->UNC[1] = '\\'; |
| 1342 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1343 | printk(KERN_WARNING "CIFS: UNC Path does not " |
| 1344 | "begin with // or \\\\ \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | return 1; |
| 1346 | } |
Igor Mammedov | 7c5e628 | 2008-05-08 20:48:42 +0000 | [diff] [blame] | 1347 | value = strpbrk(vol->UNC+2, "/\\"); |
| 1348 | if (value) |
| 1349 | *value = '\\'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | } else { |
| 1351 | printk(KERN_WARNING "CIFS: UNC name too long\n"); |
| 1352 | return 1; |
| 1353 | } |
| 1354 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1355 | if (vol->UNCip == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | vol->UNCip = &vol->UNC[2]; |
| 1357 | |
| 1358 | return 0; |
| 1359 | } |
| 1360 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1361 | static struct TCP_Server_Info * |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1362 | cifs_find_tcp_session(struct sockaddr_storage *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | { |
| 1364 | struct list_head *tmp; |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1365 | struct TCP_Server_Info *server; |
| 1366 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; |
| 1367 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1369 | write_lock(&cifs_tcp_ses_lock); |
| 1370 | list_for_each(tmp, &cifs_tcp_ses_list) { |
| 1371 | server = list_entry(tmp, struct TCP_Server_Info, |
| 1372 | tcp_ses_list); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1373 | /* |
| 1374 | * the demux thread can exit on its own while still in CifsNew |
| 1375 | * so don't accept any sockets in that state. Since the |
| 1376 | * tcpStatus never changes back to CifsNew it's safe to check |
| 1377 | * for this without a lock. |
| 1378 | */ |
| 1379 | if (server->tcpStatus == CifsNew) |
Cyrill Gorcunov | 1b20d67 | 2008-05-09 18:17:21 +0000 | [diff] [blame] | 1380 | continue; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1381 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1382 | if (addr->ss_family == AF_INET && |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1383 | (addr4->sin_addr.s_addr != |
| 1384 | server->addr.sockAddr.sin_addr.s_addr)) |
| 1385 | continue; |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1386 | else if (addr->ss_family == AF_INET6 && |
Jeff Layton | 681bf72 | 2009-06-11 10:27:31 -0400 | [diff] [blame] | 1387 | (!ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr, |
| 1388 | &addr6->sin6_addr) || |
| 1389 | server->addr.sockAddr6.sin6_scope_id != |
| 1390 | addr6->sin6_scope_id)) |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1391 | continue; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1392 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1393 | ++server->srv_count; |
| 1394 | write_unlock(&cifs_tcp_ses_lock); |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 1395 | cFYI(1, ("Existing tcp session with server found")); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1396 | return server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | } |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1398 | write_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | return NULL; |
| 1400 | } |
| 1401 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1402 | static void |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1403 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | { |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1405 | struct task_struct *task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1407 | write_lock(&cifs_tcp_ses_lock); |
| 1408 | if (--server->srv_count > 0) { |
| 1409 | write_unlock(&cifs_tcp_ses_lock); |
| 1410 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | } |
Steve French | dea570e | 2008-05-06 22:05:51 +0000 | [diff] [blame] | 1412 | |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1413 | list_del_init(&server->tcp_ses_list); |
| 1414 | write_unlock(&cifs_tcp_ses_lock); |
| 1415 | |
| 1416 | spin_lock(&GlobalMid_Lock); |
| 1417 | server->tcpStatus = CifsExiting; |
| 1418 | spin_unlock(&GlobalMid_Lock); |
| 1419 | |
| 1420 | task = xchg(&server->tsk, NULL); |
| 1421 | if (task) |
| 1422 | force_sig(SIGKILL, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1425 | static struct TCP_Server_Info * |
| 1426 | cifs_get_tcp_session(struct smb_vol *volume_info) |
| 1427 | { |
| 1428 | struct TCP_Server_Info *tcp_ses = NULL; |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1429 | struct sockaddr_storage addr; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1430 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
| 1431 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; |
| 1432 | int rc; |
| 1433 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1434 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1435 | |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1436 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip)); |
| 1437 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1438 | if (volume_info->UNCip && volume_info->UNC) { |
Jeff Layton | 1e68b2b | 2009-06-11 10:27:30 -0400 | [diff] [blame] | 1439 | rc = cifs_convert_address(volume_info->UNCip, &addr); |
| 1440 | if (!rc) { |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1441 | /* we failed translating address */ |
| 1442 | rc = -EINVAL; |
| 1443 | goto out_err; |
| 1444 | } |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1445 | } else if (volume_info->UNCip) { |
| 1446 | /* BB using ip addr as tcp_ses name to connect to the |
| 1447 | DFS root below */ |
| 1448 | cERROR(1, ("Connecting to DFS root not implemented yet")); |
| 1449 | rc = -EINVAL; |
| 1450 | goto out_err; |
| 1451 | } else /* which tcp_sess DFS root would we conect to */ { |
| 1452 | cERROR(1, |
| 1453 | ("CIFS mount error: No UNC path (e.g. -o " |
| 1454 | "unc=//192.168.1.100/public) specified")); |
| 1455 | rc = -EINVAL; |
| 1456 | goto out_err; |
| 1457 | } |
| 1458 | |
| 1459 | /* see if we already have a matching tcp_ses */ |
| 1460 | tcp_ses = cifs_find_tcp_session(&addr); |
| 1461 | if (tcp_ses) |
| 1462 | return tcp_ses; |
| 1463 | |
| 1464 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
| 1465 | if (!tcp_ses) { |
| 1466 | rc = -ENOMEM; |
| 1467 | goto out_err; |
| 1468 | } |
| 1469 | |
| 1470 | tcp_ses->hostname = extract_hostname(volume_info->UNC); |
| 1471 | if (IS_ERR(tcp_ses->hostname)) { |
| 1472 | rc = PTR_ERR(tcp_ses->hostname); |
| 1473 | goto out_err; |
| 1474 | } |
| 1475 | |
| 1476 | tcp_ses->noblocksnd = volume_info->noblocksnd; |
| 1477 | tcp_ses->noautotune = volume_info->noautotune; |
| 1478 | atomic_set(&tcp_ses->inFlight, 0); |
| 1479 | init_waitqueue_head(&tcp_ses->response_q); |
| 1480 | init_waitqueue_head(&tcp_ses->request_q); |
| 1481 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); |
| 1482 | mutex_init(&tcp_ses->srv_mutex); |
| 1483 | memcpy(tcp_ses->workstation_RFC1001_name, |
| 1484 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
| 1485 | memcpy(tcp_ses->server_RFC1001_name, |
| 1486 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); |
| 1487 | tcp_ses->sequence_number = 0; |
| 1488 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); |
| 1489 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); |
| 1490 | |
| 1491 | /* |
| 1492 | * at this point we are the only ones with the pointer |
| 1493 | * to the struct since the kernel thread not created yet |
| 1494 | * no need to spinlock this init of tcpStatus or srv_count |
| 1495 | */ |
| 1496 | tcp_ses->tcpStatus = CifsNew; |
| 1497 | ++tcp_ses->srv_count; |
| 1498 | |
Jeff Layton | a9ac49d | 2009-01-22 14:43:21 -0500 | [diff] [blame] | 1499 | if (addr.ss_family == AF_INET6) { |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1500 | cFYI(1, ("attempting ipv6 connect")); |
| 1501 | /* BB should we allow ipv6 on port 139? */ |
| 1502 | /* other OS never observed in Wild doing 139 with v6 */ |
Simo Leone | 6debdbc | 2009-06-25 02:44:43 +0000 | [diff] [blame] | 1503 | sin_server6->sin6_port = htons(volume_info->port); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1504 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, |
| 1505 | sizeof(struct sockaddr_in6)); |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1506 | rc = ipv6_connect(tcp_ses); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1507 | } else { |
Simo Leone | 6debdbc | 2009-06-25 02:44:43 +0000 | [diff] [blame] | 1508 | sin_server->sin_port = htons(volume_info->port); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1509 | memcpy(&tcp_ses->addr.sockAddr, sin_server, |
| 1510 | sizeof(struct sockaddr_in)); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1511 | rc = ipv4_connect(tcp_ses); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 1512 | } |
| 1513 | if (rc < 0) { |
| 1514 | cERROR(1, ("Error connecting to socket. Aborting operation")); |
| 1515 | goto out_err; |
| 1516 | } |
| 1517 | |
| 1518 | /* |
| 1519 | * since we're in a cifs function already, we know that |
| 1520 | * this will succeed. No need for try_module_get(). |
| 1521 | */ |
| 1522 | __module_get(THIS_MODULE); |
| 1523 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, |
| 1524 | tcp_ses, "cifsd"); |
| 1525 | if (IS_ERR(tcp_ses->tsk)) { |
| 1526 | rc = PTR_ERR(tcp_ses->tsk); |
| 1527 | cERROR(1, ("error %d create cifsd thread", rc)); |
| 1528 | module_put(THIS_MODULE); |
| 1529 | goto out_err; |
| 1530 | } |
| 1531 | |
| 1532 | /* thread spawned, put it on the list */ |
| 1533 | write_lock(&cifs_tcp_ses_lock); |
| 1534 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); |
| 1535 | write_unlock(&cifs_tcp_ses_lock); |
| 1536 | |
| 1537 | return tcp_ses; |
| 1538 | |
| 1539 | out_err: |
| 1540 | if (tcp_ses) { |
| 1541 | kfree(tcp_ses->hostname); |
| 1542 | if (tcp_ses->ssocket) |
| 1543 | sock_release(tcp_ses->ssocket); |
| 1544 | kfree(tcp_ses); |
| 1545 | } |
| 1546 | return ERR_PTR(rc); |
| 1547 | } |
| 1548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | static struct cifsSesInfo * |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1550 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | { |
| 1552 | struct list_head *tmp; |
| 1553 | struct cifsSesInfo *ses; |
| 1554 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1555 | write_lock(&cifs_tcp_ses_lock); |
| 1556 | list_for_each(tmp, &server->smb_ses_list) { |
| 1557 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); |
| 1558 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | continue; |
| 1560 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1561 | ++ses->ses_count; |
| 1562 | write_unlock(&cifs_tcp_ses_lock); |
| 1563 | return ses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1565 | write_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | return NULL; |
| 1567 | } |
| 1568 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 1569 | static void |
| 1570 | cifs_put_smb_ses(struct cifsSesInfo *ses) |
| 1571 | { |
| 1572 | int xid; |
| 1573 | struct TCP_Server_Info *server = ses->server; |
| 1574 | |
| 1575 | write_lock(&cifs_tcp_ses_lock); |
| 1576 | if (--ses->ses_count > 0) { |
| 1577 | write_unlock(&cifs_tcp_ses_lock); |
| 1578 | return; |
| 1579 | } |
| 1580 | |
| 1581 | list_del_init(&ses->smb_ses_list); |
| 1582 | write_unlock(&cifs_tcp_ses_lock); |
| 1583 | |
| 1584 | if (ses->status == CifsGood) { |
| 1585 | xid = GetXid(); |
| 1586 | CIFSSMBLogoff(xid, ses); |
| 1587 | _FreeXid(xid); |
| 1588 | } |
| 1589 | sesInfoFree(ses); |
| 1590 | cifs_put_tcp_session(server); |
| 1591 | } |
| 1592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | static struct cifsTconInfo * |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1594 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | { |
| 1596 | struct list_head *tmp; |
| 1597 | struct cifsTconInfo *tcon; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1599 | write_lock(&cifs_tcp_ses_lock); |
| 1600 | list_for_each(tmp, &ses->tcon_list) { |
| 1601 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); |
| 1602 | if (tcon->tidStatus == CifsExiting) |
| 1603 | continue; |
| 1604 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | continue; |
| 1606 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1607 | ++tcon->tc_count; |
| 1608 | write_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | return tcon; |
| 1610 | } |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1611 | write_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | return NULL; |
| 1613 | } |
| 1614 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 1615 | static void |
| 1616 | cifs_put_tcon(struct cifsTconInfo *tcon) |
| 1617 | { |
| 1618 | int xid; |
| 1619 | struct cifsSesInfo *ses = tcon->ses; |
| 1620 | |
| 1621 | write_lock(&cifs_tcp_ses_lock); |
| 1622 | if (--tcon->tc_count > 0) { |
| 1623 | write_unlock(&cifs_tcp_ses_lock); |
| 1624 | return; |
| 1625 | } |
| 1626 | |
| 1627 | list_del_init(&tcon->tcon_list); |
| 1628 | write_unlock(&cifs_tcp_ses_lock); |
| 1629 | |
| 1630 | xid = GetXid(); |
| 1631 | CIFSSMBTDis(xid, tcon); |
| 1632 | _FreeXid(xid); |
| 1633 | |
| 1634 | DeleteTconOplockQEntries(tcon); |
| 1635 | tconInfoFree(tcon); |
| 1636 | cifs_put_smb_ses(ses); |
| 1637 | } |
| 1638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | int |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1640 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
| 1641 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1642 | struct dfs_info3_param **preferrals, int remap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | { |
| 1644 | char *temp_unc; |
| 1645 | int rc = 0; |
| 1646 | |
| 1647 | *pnum_referrals = 0; |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1648 | *preferrals = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | |
| 1650 | if (pSesInfo->ipc_tid == 0) { |
| 1651 | temp_unc = kmalloc(2 /* for slashes */ + |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1652 | strnlen(pSesInfo->serverName, |
| 1653 | SERVER_NAME_LEN_WITH_NULL * 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | + 1 + 4 /* slash IPC$ */ + 2, |
| 1655 | GFP_KERNEL); |
| 1656 | if (temp_unc == NULL) |
| 1657 | return -ENOMEM; |
| 1658 | temp_unc[0] = '\\'; |
| 1659 | temp_unc[1] = '\\'; |
| 1660 | strcpy(temp_unc + 2, pSesInfo->serverName); |
| 1661 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); |
| 1662 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); |
| 1663 | cFYI(1, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1664 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | kfree(temp_unc); |
| 1666 | } |
| 1667 | if (rc == 0) |
Steve French | c2cf07d | 2008-05-15 06:20:02 +0000 | [diff] [blame] | 1668 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1669 | pnum_referrals, nls_codepage, remap); |
Steve French | 366781c | 2008-01-25 10:12:41 +0000 | [diff] [blame] | 1670 | /* BB map targetUNCs to dfs_info3 structures, here or |
| 1671 | in CIFSGetDFSRefer BB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | |
| 1673 | return rc; |
| 1674 | } |
| 1675 | |
Jeff Layton | 09e50d5 | 2008-07-23 10:11:19 -0400 | [diff] [blame] | 1676 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 1677 | static struct lock_class_key cifs_key[2]; |
| 1678 | static struct lock_class_key cifs_slock_key[2]; |
| 1679 | |
| 1680 | static inline void |
| 1681 | cifs_reclassify_socket4(struct socket *sock) |
| 1682 | { |
| 1683 | struct sock *sk = sock->sk; |
| 1684 | BUG_ON(sock_owned_by_user(sk)); |
| 1685 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", |
| 1686 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); |
| 1687 | } |
| 1688 | |
| 1689 | static inline void |
| 1690 | cifs_reclassify_socket6(struct socket *sock) |
| 1691 | { |
| 1692 | struct sock *sk = sock->sk; |
| 1693 | BUG_ON(sock_owned_by_user(sk)); |
| 1694 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", |
| 1695 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); |
| 1696 | } |
| 1697 | #else |
| 1698 | static inline void |
| 1699 | cifs_reclassify_socket4(struct socket *sock) |
| 1700 | { |
| 1701 | } |
| 1702 | |
| 1703 | static inline void |
| 1704 | cifs_reclassify_socket6(struct socket *sock) |
| 1705 | { |
| 1706 | } |
| 1707 | #endif |
| 1708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | /* See RFC1001 section 14 on representation of Netbios names */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1710 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1712 | unsigned int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1714 | for (i = 0, j = 0; i < (length); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | /* mask a nibble at a time and encode */ |
| 1716 | target[j] = 'A' + (0x0F & (source[i] >> 4)); |
| 1717 | target[j+1] = 'A' + (0x0F & source[i]); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1718 | j += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | } |
| 1720 | |
| 1721 | } |
| 1722 | |
| 1723 | |
| 1724 | static int |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1725 | ipv4_connect(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | { |
| 1727 | int rc = 0; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1728 | bool connected = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | __be16 orig_port = 0; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1730 | struct socket *socket = server->ssocket; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1732 | if (socket == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1733 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1734 | IPPROTO_TCP, &socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | if (rc < 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1736 | cERROR(1, ("Error %d creating socket", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1739 | |
| 1740 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
| 1741 | cFYI(1, ("Socket created")); |
| 1742 | server->ssocket = socket; |
| 1743 | socket->sk->sk_allocation = GFP_NOFS; |
| 1744 | cifs_reclassify_socket4(socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | } |
| 1746 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1747 | /* user overrode default port */ |
| 1748 | if (server->addr.sockAddr.sin_port) { |
| 1749 | rc = socket->ops->connect(socket, (struct sockaddr *) |
| 1750 | &server->addr.sockAddr, |
| 1751 | sizeof(struct sockaddr_in), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | if (rc >= 0) |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1753 | connected = true; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1756 | if (!connected) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1757 | /* save original port so we can retry user specified port |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | later if fall back ports fail this time */ |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1759 | orig_port = server->addr.sockAddr.sin_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | |
| 1761 | /* do not retry on the same port we just failed on */ |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1762 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
| 1763 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); |
| 1764 | rc = socket->ops->connect(socket, |
| 1765 | (struct sockaddr *) |
| 1766 | &server->addr.sockAddr, |
| 1767 | sizeof(struct sockaddr_in), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | if (rc >= 0) |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1769 | connected = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | } |
| 1771 | } |
| 1772 | if (!connected) { |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1773 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
| 1774 | rc = socket->ops->connect(socket, (struct sockaddr *) |
| 1775 | &server->addr.sockAddr, |
Cyrill Gorcunov | 6345a3a | 2007-10-16 17:57:55 +0000 | [diff] [blame] | 1776 | sizeof(struct sockaddr_in), 0); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1777 | if (rc >= 0) |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1778 | connected = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | } |
| 1780 | |
| 1781 | /* give up here - unless we want to retry on different |
| 1782 | protocol families some day */ |
| 1783 | if (!connected) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1784 | if (orig_port) |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1785 | server->addr.sockAddr.sin_port = orig_port; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1786 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1787 | sock_release(socket); |
| 1788 | server->ssocket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | return rc; |
| 1790 | } |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1791 | |
| 1792 | |
| 1793 | /* |
| 1794 | * Eventually check for other socket options to change from |
| 1795 | * the default. sock_setsockopt not used because it expects |
| 1796 | * user space buffer |
| 1797 | */ |
| 1798 | socket->sk->sk_rcvtimeo = 7 * HZ; |
Steve French | da505c3 | 2009-01-19 03:49:35 +0000 | [diff] [blame] | 1799 | socket->sk->sk_sndtimeo = 5 * HZ; |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1800 | |
Steve French | b387eae | 2005-10-10 14:21:15 -0700 | [diff] [blame] | 1801 | /* make the bufsizes depend on wsize/rsize and max requests */ |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1802 | if (server->noautotune) { |
| 1803 | if (socket->sk->sk_sndbuf < (200 * 1024)) |
| 1804 | socket->sk->sk_sndbuf = 200 * 1024; |
| 1805 | if (socket->sk->sk_rcvbuf < (140 * 1024)) |
| 1806 | socket->sk->sk_rcvbuf = 140 * 1024; |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1807 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1809 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
| 1810 | socket->sk->sk_sndbuf, |
| 1811 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); |
| 1812 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | /* send RFC1001 sessinit */ |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1814 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | /* some servers require RFC1001 sessinit before sending |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1816 | negprot - BB check reconnection in case where second |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | sessinit is sent but no second negprot */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1818 | struct rfc1002_session_packet *ses_init_buf; |
| 1819 | struct smb_hdr *smb_buf; |
| 1820 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), |
| 1821 | GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1822 | if (ses_init_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | ses_init_buf->trailer.session_req.called_len = 32; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1824 | if (server->server_RFC1001_name && |
| 1825 | server->server_RFC1001_name[0] != 0) |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1826 | rfc1002mangle(ses_init_buf->trailer. |
| 1827 | session_req.called_name, |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1828 | server->server_RFC1001_name, |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1829 | RFC1001_NAME_LEN_WITH_NULL); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1830 | else |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1831 | rfc1002mangle(ses_init_buf->trailer. |
| 1832 | session_req.called_name, |
| 1833 | DEFAULT_CIFS_CALLED_NAME, |
| 1834 | RFC1001_NAME_LEN_WITH_NULL); |
Steve French | a10faeb2 | 2005-08-22 21:38:31 -0700 | [diff] [blame] | 1835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | ses_init_buf->trailer.session_req.calling_len = 32; |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | /* calling name ends in null (byte 16) from old smb |
| 1839 | convention. */ |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1840 | if (server->workstation_RFC1001_name && |
| 1841 | server->workstation_RFC1001_name[0] != 0) |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1842 | rfc1002mangle(ses_init_buf->trailer. |
| 1843 | session_req.calling_name, |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1844 | server->workstation_RFC1001_name, |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1845 | RFC1001_NAME_LEN_WITH_NULL); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1846 | else |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 1847 | rfc1002mangle(ses_init_buf->trailer. |
| 1848 | session_req.calling_name, |
| 1849 | "LINUX_CIFS_CLNT", |
| 1850 | RFC1001_NAME_LEN_WITH_NULL); |
Jeff Layton | bcf4b10 | 2008-12-01 18:42:15 -0500 | [diff] [blame] | 1851 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | ses_init_buf->trailer.session_req.scope1 = 0; |
| 1853 | ses_init_buf->trailer.session_req.scope2 = 0; |
| 1854 | smb_buf = (struct smb_hdr *)ses_init_buf; |
| 1855 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ |
| 1856 | smb_buf->smb_buf_length = 0x81000044; |
Jeff Layton | 0496e02 | 2008-12-30 12:39:16 -0500 | [diff] [blame] | 1857 | rc = smb_send(server, smb_buf, 0x44); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | kfree(ses_init_buf); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1859 | msleep(1); /* RFC1001 layer in at least one server |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1860 | requires very short break before negprot |
| 1861 | presumably because not expecting negprot |
| 1862 | to follow so fast. This is a simple |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1863 | solution that works without |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1864 | complicating the code and causes no |
| 1865 | significant slowing down on mount |
| 1866 | for everyone else */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1868 | /* else the negprot may still work without this |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | even though malloc failed */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1872 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | return rc; |
| 1874 | } |
| 1875 | |
| 1876 | static int |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1877 | ipv6_connect(struct TCP_Server_Info *server) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | { |
| 1879 | int rc = 0; |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1880 | bool connected = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | __be16 orig_port = 0; |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1882 | struct socket *socket = server->ssocket; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1884 | if (socket == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1885 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1886 | IPPROTO_TCP, &socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | if (rc < 0) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1888 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1889 | socket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | } |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1892 | |
| 1893 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
| 1894 | cFYI(1, ("ipv6 Socket created")); |
| 1895 | server->ssocket = socket; |
| 1896 | socket->sk->sk_allocation = GFP_NOFS; |
| 1897 | cifs_reclassify_socket6(socket); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | } |
| 1899 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1900 | /* user overrode default port */ |
| 1901 | if (server->addr.sockAddr6.sin6_port) { |
| 1902 | rc = socket->ops->connect(socket, |
| 1903 | (struct sockaddr *) &server->addr.sockAddr6, |
Cyrill Gorcunov | 6345a3a | 2007-10-16 17:57:55 +0000 | [diff] [blame] | 1904 | sizeof(struct sockaddr_in6), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | if (rc >= 0) |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1906 | connected = true; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1909 | if (!connected) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1910 | /* save original port so we can retry user specified port |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | later if fall back ports fail this time */ |
| 1912 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1913 | orig_port = server->addr.sockAddr6.sin6_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | /* do not retry on the same port we just failed on */ |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1915 | if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { |
| 1916 | server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); |
| 1917 | rc = socket->ops->connect(socket, (struct sockaddr *) |
| 1918 | &server->addr.sockAddr6, |
Cyrill Gorcunov | 6345a3a | 2007-10-16 17:57:55 +0000 | [diff] [blame] | 1919 | sizeof(struct sockaddr_in6), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | if (rc >= 0) |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1921 | connected = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | } |
| 1923 | } |
| 1924 | if (!connected) { |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1925 | server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); |
| 1926 | rc = socket->ops->connect(socket, (struct sockaddr *) |
| 1927 | &server->addr.sockAddr6, |
| 1928 | sizeof(struct sockaddr_in6), 0); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1929 | if (rc >= 0) |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1930 | connected = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | } |
| 1932 | |
| 1933 | /* give up here - unless we want to retry on different |
| 1934 | protocol families some day */ |
| 1935 | if (!connected) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1936 | if (orig_port) |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1937 | server->addr.sockAddr6.sin6_port = orig_port; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1938 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1939 | sock_release(socket); |
| 1940 | server->ssocket = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | return rc; |
| 1942 | } |
Steve French | edf1ae4 | 2008-10-29 00:47:57 +0000 | [diff] [blame] | 1943 | |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1944 | /* |
| 1945 | * Eventually check for other socket options to change from |
| 1946 | * the default. sock_setsockopt not used because it expects |
| 1947 | * user space buffer |
| 1948 | */ |
| 1949 | socket->sk->sk_rcvtimeo = 7 * HZ; |
Steve French | da505c3 | 2009-01-19 03:49:35 +0000 | [diff] [blame] | 1950 | socket->sk->sk_sndtimeo = 5 * HZ; |
Jeff Layton | d5c5605 | 2008-12-01 18:42:33 -0500 | [diff] [blame] | 1951 | server->ssocket = socket; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | return rc; |
| 1954 | } |
| 1955 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1956 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
| 1957 | struct super_block *sb, struct smb_vol *vol_info) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 1958 | { |
| 1959 | /* if we are reconnecting then should we check to see if |
| 1960 | * any requested capabilities changed locally e.g. via |
| 1961 | * remount but we can not do much about it here |
| 1962 | * if they have (even if we could detect it by the following) |
| 1963 | * Perhaps we could add a backpointer to array of sb from tcon |
| 1964 | * or if we change to make all sb to same share the same |
| 1965 | * sb as NFS - then we only have one backpointer to sb. |
| 1966 | * What if we wanted to mount the server share twice once with |
| 1967 | * and once without posixacls or posix paths? */ |
| 1968 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1969 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1970 | if (vol_info && vol_info->no_linux_ext) { |
| 1971 | tcon->fsUnixInfo.Capability = 0; |
| 1972 | tcon->unix_ext = 0; /* Unix Extensions disabled */ |
| 1973 | cFYI(1, ("Linux protocol extensions disabled")); |
| 1974 | return; |
| 1975 | } else if (vol_info) |
| 1976 | tcon->unix_ext = 1; /* Unix Extensions supported */ |
| 1977 | |
| 1978 | if (tcon->unix_ext == 0) { |
| 1979 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); |
| 1980 | return; |
| 1981 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1982 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1983 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 1984 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1985 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 1986 | /* check for reconnect case in which we do not |
| 1987 | want to change the mount behavior if we can avoid it */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1988 | if (vol_info == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1989 | /* turn off POSIX ACL and PATHNAMES if not set |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 1990 | originally at mount time */ |
| 1991 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) |
| 1992 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 1993 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
| 1994 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
| 1995 | cERROR(1, ("POSIXPATH support change")); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 1996 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Igor Mammedov | 11b6d64 | 2008-02-15 19:06:04 +0000 | [diff] [blame] | 1997 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
| 1998 | cERROR(1, ("possible reconnect error")); |
| 1999 | cERROR(1, |
| 2000 | ("server disabled POSIX path support")); |
| 2001 | } |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2002 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2003 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2004 | cap &= CIFS_UNIX_CAP_MASK; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2005 | if (vol_info && vol_info->no_psx_acl) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2006 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2007 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2008 | cFYI(1, ("negotiated posix acl support")); |
| 2009 | if (sb) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2010 | sb->s_flags |= MS_POSIXACL; |
| 2011 | } |
| 2012 | |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2013 | if (vol_info && vol_info->posix_paths == 0) |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2014 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2015 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2016 | cFYI(1, ("negotiate posix pathnames")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2017 | if (sb) |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2018 | CIFS_SB(sb)->mnt_cifs_flags |= |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2019 | CIFS_MOUNT_POSIX_PATHS; |
| 2020 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2021 | |
Steve French | 984acfe | 2007-04-26 16:42:50 +0000 | [diff] [blame] | 2022 | /* We might be setting the path sep back to a different |
| 2023 | form if we are reconnecting and the server switched its |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2024 | posix path capability for this share */ |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2025 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
Steve French | 984acfe | 2007-04-26 16:42:50 +0000 | [diff] [blame] | 2026 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2027 | |
| 2028 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { |
| 2029 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { |
| 2030 | CIFS_SB(sb)->rsize = 127 * 1024; |
Steve French | 90c81e0 | 2008-02-12 20:32:36 +0000 | [diff] [blame] | 2031 | cFYI(DBG2, |
| 2032 | ("larger reads not supported by srv")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2033 | } |
| 2034 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2035 | |
| 2036 | |
| 2037 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2038 | #ifdef CONFIG_CIFS_DEBUG2 |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2039 | if (cap & CIFS_UNIX_FCNTL_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2040 | cFYI(1, ("FCNTL cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2041 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2042 | cFYI(1, ("EXTATTR cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2043 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2044 | cFYI(1, ("POSIX path cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2045 | if (cap & CIFS_UNIX_XATTR_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2046 | cFYI(1, ("XATTR cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2047 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2048 | cFYI(1, ("POSIX ACL cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2049 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2050 | cFYI(1, ("very large read cap")); |
Steve French | 75865f8 | 2007-06-24 18:30:48 +0000 | [diff] [blame] | 2051 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2052 | cFYI(1, ("very large write cap")); |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2053 | #endif /* CIFS_DEBUG2 */ |
| 2054 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2055 | if (vol_info == NULL) { |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2056 | cFYI(1, ("resetting capabilities failed")); |
Steve French | 442aa31 | 2007-09-24 20:25:46 +0000 | [diff] [blame] | 2057 | } else |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2058 | cERROR(1, ("Negotiating Unix capabilities " |
| 2059 | "with the server failed. Consider " |
| 2060 | "mounting with the Unix Extensions\n" |
| 2061 | "disabled, if problems are found, " |
| 2062 | "by specifying the nounix mount " |
Steve French | 2224f4e | 2007-09-20 15:37:29 +0000 | [diff] [blame] | 2063 | "option.")); |
Steve French | 5a44b31 | 2007-09-20 15:16:24 +0000 | [diff] [blame] | 2064 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2065 | } |
| 2066 | } |
| 2067 | } |
| 2068 | |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2069 | static void |
| 2070 | convert_delimiter(char *path, char delim) |
| 2071 | { |
| 2072 | int i; |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2073 | char old_delim; |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2074 | |
| 2075 | if (path == NULL) |
| 2076 | return; |
| 2077 | |
Steve French | 582d21e | 2008-05-13 04:54:12 +0000 | [diff] [blame] | 2078 | if (delim == '/') |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2079 | old_delim = '\\'; |
| 2080 | else |
| 2081 | old_delim = '/'; |
| 2082 | |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2083 | for (i = 0; path[i] != '\0'; i++) { |
Steve French | c2d68ea | 2008-02-15 19:20:18 +0000 | [diff] [blame] | 2084 | if (path[i] == old_delim) |
Steve French | 03a143c | 2008-02-14 06:38:30 +0000 | [diff] [blame] | 2085 | path[i] = delim; |
| 2086 | } |
| 2087 | } |
| 2088 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2089 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
| 2090 | struct cifs_sb_info *cifs_sb) |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2091 | { |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2092 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
| 2093 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
| 2094 | pvolume_info->rsize)); |
| 2095 | cifs_sb->rsize = CIFSMaxBufSize; |
| 2096 | } else if ((pvolume_info->rsize) && |
| 2097 | (pvolume_info->rsize <= CIFSMaxBufSize)) |
| 2098 | cifs_sb->rsize = pvolume_info->rsize; |
| 2099 | else /* default */ |
| 2100 | cifs_sb->rsize = CIFSMaxBufSize; |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2101 | |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2102 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
| 2103 | cERROR(1, ("wsize %d too large, using 4096 instead", |
| 2104 | pvolume_info->wsize)); |
| 2105 | cifs_sb->wsize = 4096; |
| 2106 | } else if (pvolume_info->wsize) |
| 2107 | cifs_sb->wsize = pvolume_info->wsize; |
| 2108 | else |
| 2109 | cifs_sb->wsize = min_t(const int, |
| 2110 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
| 2111 | 127*1024); |
| 2112 | /* old default of CIFSMaxBufSize was too small now |
| 2113 | that SMB Write2 can send multiple pages in kvec. |
| 2114 | RFC1001 does not describe what happens when frame |
| 2115 | bigger than 128K is sent so use that as max in |
| 2116 | conjunction with 52K kvec constraint on arch with 4K |
| 2117 | page size */ |
| 2118 | |
| 2119 | if (cifs_sb->rsize < 2048) { |
| 2120 | cifs_sb->rsize = 2048; |
| 2121 | /* Windows ME may prefer this */ |
| 2122 | cFYI(1, ("readsize set to minimum: 2048")); |
| 2123 | } |
| 2124 | /* calculate prepath */ |
| 2125 | cifs_sb->prepath = pvolume_info->prepath; |
| 2126 | if (cifs_sb->prepath) { |
| 2127 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
| 2128 | /* we can not convert the / to \ in the path |
| 2129 | separators in the prefixpath yet because we do not |
| 2130 | know (until reset_cifs_unix_caps is called later) |
| 2131 | whether POSIX PATH CAP is available. We normalize |
| 2132 | the / to \ after reset_cifs_unix_caps is called */ |
| 2133 | pvolume_info->prepath = NULL; |
| 2134 | } else |
| 2135 | cifs_sb->prepathlen = 0; |
| 2136 | cifs_sb->mnt_uid = pvolume_info->linux_uid; |
| 2137 | cifs_sb->mnt_gid = pvolume_info->linux_gid; |
| 2138 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; |
| 2139 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; |
| 2140 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
| 2141 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); |
| 2142 | |
| 2143 | if (pvolume_info->noperm) |
| 2144 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
| 2145 | if (pvolume_info->setuids) |
| 2146 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
| 2147 | if (pvolume_info->server_ino) |
| 2148 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
| 2149 | if (pvolume_info->remap) |
| 2150 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
| 2151 | if (pvolume_info->no_xattr) |
| 2152 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
| 2153 | if (pvolume_info->sfu_emul) |
| 2154 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
| 2155 | if (pvolume_info->nobrl) |
| 2156 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
Steve French | be65244 | 2009-02-23 15:21:59 +0000 | [diff] [blame] | 2157 | if (pvolume_info->nostrictsync) |
Steve French | 4717bed | 2009-02-24 14:44:19 +0000 | [diff] [blame] | 2158 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC; |
Steve French | 13a6e42 | 2008-12-02 17:24:33 +0000 | [diff] [blame] | 2159 | if (pvolume_info->mand_lock) |
| 2160 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2161 | if (pvolume_info->cifs_acl) |
| 2162 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
| 2163 | if (pvolume_info->override_uid) |
| 2164 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; |
| 2165 | if (pvolume_info->override_gid) |
| 2166 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; |
| 2167 | if (pvolume_info->dynperm) |
| 2168 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; |
| 2169 | if (pvolume_info->direct_io) { |
| 2170 | cFYI(1, ("mounting share using direct i/o")); |
| 2171 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
| 2172 | } |
| 2173 | |
| 2174 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) |
| 2175 | cERROR(1, ("mount option dynperm ignored if cifsacl " |
| 2176 | "mount option supported")); |
Jeff Layton | b1c8d2b | 2008-10-22 13:57:07 -0400 | [diff] [blame] | 2177 | } |
| 2178 | |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2179 | static int |
| 2180 | is_path_accessible(int xid, struct cifsTconInfo *tcon, |
| 2181 | struct cifs_sb_info *cifs_sb, const char *full_path) |
| 2182 | { |
| 2183 | int rc; |
| 2184 | __u64 inode_num; |
| 2185 | FILE_ALL_INFO *pfile_info; |
| 2186 | |
| 2187 | rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num, |
| 2188 | cifs_sb->local_nls, |
| 2189 | cifs_sb->mnt_cifs_flags & |
| 2190 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2191 | if (rc != -EOPNOTSUPP) |
| 2192 | return rc; |
| 2193 | |
| 2194 | pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
| 2195 | if (pfile_info == NULL) |
| 2196 | return -ENOMEM; |
| 2197 | |
| 2198 | rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, |
| 2199 | 0 /* not legacy */, cifs_sb->local_nls, |
| 2200 | cifs_sb->mnt_cifs_flags & |
| 2201 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2202 | kfree(pfile_info); |
| 2203 | return rc; |
| 2204 | } |
| 2205 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2206 | static void |
| 2207 | cleanup_volume_info(struct smb_vol **pvolume_info) |
| 2208 | { |
| 2209 | struct smb_vol *volume_info; |
| 2210 | |
| 2211 | if (!pvolume_info && !*pvolume_info) |
| 2212 | return; |
| 2213 | |
| 2214 | volume_info = *pvolume_info; |
| 2215 | kzfree(volume_info->password); |
| 2216 | kfree(volume_info->UNC); |
| 2217 | kfree(volume_info->prepath); |
| 2218 | kfree(volume_info); |
| 2219 | *pvolume_info = NULL; |
| 2220 | return; |
| 2221 | } |
| 2222 | |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2223 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2224 | /* build_path_to_root returns full path to root when |
| 2225 | * we do not have an exiting connection (tcon) */ |
| 2226 | static char * |
| 2227 | build_unc_path_to_root(const struct smb_vol *volume_info, |
| 2228 | const struct cifs_sb_info *cifs_sb) |
| 2229 | { |
| 2230 | char *full_path; |
| 2231 | |
| 2232 | int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1); |
| 2233 | full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL); |
| 2234 | if (full_path == NULL) |
| 2235 | return ERR_PTR(-ENOMEM); |
| 2236 | |
| 2237 | strncpy(full_path, volume_info->UNC, unc_len); |
| 2238 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { |
| 2239 | int i; |
| 2240 | for (i = 0; i < unc_len; i++) { |
| 2241 | if (full_path[i] == '\\') |
| 2242 | full_path[i] = '/'; |
| 2243 | } |
| 2244 | } |
| 2245 | |
| 2246 | if (cifs_sb->prepathlen) |
| 2247 | strncpy(full_path + unc_len, cifs_sb->prepath, |
| 2248 | cifs_sb->prepathlen); |
| 2249 | |
| 2250 | full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */ |
| 2251 | return full_path; |
| 2252 | } |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2253 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | int |
| 2256 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2257 | char *mount_data_global, const char *devname) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | { |
| 2259 | int rc = 0; |
| 2260 | int xid; |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2261 | struct smb_vol *volume_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | struct cifsSesInfo *pSesInfo = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | struct cifsTconInfo *tcon = NULL; |
| 2264 | struct TCP_Server_Info *srvTcp = NULL; |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2265 | char *full_path; |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2266 | char *mount_data = mount_data_global; |
| 2267 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2268 | struct dfs_info3_param *referrals = NULL; |
| 2269 | unsigned int num_referrals = 0; |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2270 | int referral_walks_count = 0; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2271 | try_mount_again: |
Steve French | 2d6d589 | 2009-04-09 00:36:44 +0000 | [diff] [blame] | 2272 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2273 | full_path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | |
| 2275 | xid = GetXid(); |
| 2276 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2277 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
| 2278 | if (!volume_info) { |
| 2279 | rc = -ENOMEM; |
| 2280 | goto out; |
| 2281 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2282 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2283 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2284 | rc = -EINVAL; |
| 2285 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2286 | } |
| 2287 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2288 | if (volume_info->nullauth) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2289 | cFYI(1, ("null user")); |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2290 | volume_info->username = ""; |
| 2291 | } else if (volume_info->username) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | /* BB fixme parse for domain name here */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2293 | cFYI(1, ("Username: %s", volume_info->username)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | } else { |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 2295 | cifserror("No username specified"); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2296 | /* In userspace mount helper we can get user name from alternate |
| 2297 | locations such as env variables and files on disk */ |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2298 | rc = -EINVAL; |
| 2299 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | } |
| 2301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | |
| 2303 | /* this is needed for ASCII cp to Unicode converts */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2304 | if (volume_info->iocharset == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | cifs_sb->local_nls = load_nls_default(); |
| 2306 | /* load_nls_default can not return null */ |
| 2307 | } else { |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2308 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2309 | if (cifs_sb->local_nls == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2310 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2311 | volume_info->iocharset)); |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2312 | rc = -ELIBACC; |
| 2313 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | } |
| 2315 | } |
| 2316 | |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 2317 | /* get a reference to a tcp session */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2318 | srvTcp = cifs_get_tcp_session(volume_info); |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 2319 | if (IS_ERR(srvTcp)) { |
| 2320 | rc = PTR_ERR(srvTcp); |
| 2321 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | } |
| 2323 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2324 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2325 | if (pSesInfo) { |
Jeff Layton | 1d9a885 | 2007-12-31 01:37:11 +0000 | [diff] [blame] | 2326 | cFYI(1, ("Existing smb sess found (status=%d)", |
| 2327 | pSesInfo->status)); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2328 | /* |
| 2329 | * The existing SMB session already has a reference to srvTcp, |
| 2330 | * so we can put back the extra one we got before |
| 2331 | */ |
| 2332 | cifs_put_tcp_session(srvTcp); |
| 2333 | |
Steve French | 88e7d70 | 2008-01-03 17:37:09 +0000 | [diff] [blame] | 2334 | down(&pSesInfo->sesSem); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2335 | if (pSesInfo->need_reconnect) { |
Jeff Layton | 1d9a885 | 2007-12-31 01:37:11 +0000 | [diff] [blame] | 2336 | cFYI(1, ("Session needs reconnect")); |
Jeff Layton | 1d9a885 | 2007-12-31 01:37:11 +0000 | [diff] [blame] | 2337 | rc = cifs_setup_session(xid, pSesInfo, |
| 2338 | cifs_sb->local_nls); |
Jeff Layton | 1d9a885 | 2007-12-31 01:37:11 +0000 | [diff] [blame] | 2339 | } |
Steve French | 88e7d70 | 2008-01-03 17:37:09 +0000 | [diff] [blame] | 2340 | up(&pSesInfo->sesSem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | } else if (!rc) { |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 2342 | cFYI(1, ("Existing smb sess not found")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | pSesInfo = sesInfoAlloc(); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2344 | if (pSesInfo == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | rc = -ENOMEM; |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2346 | goto mount_fail_check; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | } |
| 2348 | |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2349 | /* new SMB session uses our srvTcp ref */ |
| 2350 | pSesInfo->server = srvTcp; |
Jeff Layton | 63c038c | 2008-12-01 18:41:46 -0500 | [diff] [blame] | 2351 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
Linus Torvalds | 0191b62 | 2008-12-28 12:49:40 -0800 | [diff] [blame] | 2352 | sprintf(pSesInfo->serverName, "%pI6", |
| 2353 | &srvTcp->addr.sockAddr6.sin6_addr); |
Jeff Layton | 8ecaf67 | 2008-12-01 15:23:50 -0500 | [diff] [blame] | 2354 | else |
Linus Torvalds | 0191b62 | 2008-12-28 12:49:40 -0800 | [diff] [blame] | 2355 | sprintf(pSesInfo->serverName, "%pI4", |
| 2356 | &srvTcp->addr.sockAddr.sin_addr.s_addr); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2357 | |
| 2358 | write_lock(&cifs_tcp_ses_lock); |
| 2359 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); |
| 2360 | write_unlock(&cifs_tcp_ses_lock); |
| 2361 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2362 | /* volume_info->password freed at unmount */ |
| 2363 | if (volume_info->password) { |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2364 | pSesInfo->password = kstrdup(volume_info->password, |
| 2365 | GFP_KERNEL); |
| 2366 | if (!pSesInfo->password) { |
| 2367 | rc = -ENOMEM; |
| 2368 | goto mount_fail_check; |
| 2369 | } |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2370 | } |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2371 | if (volume_info->username) |
| 2372 | strncpy(pSesInfo->userName, volume_info->username, |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2373 | MAX_USERNAME_SIZE); |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2374 | if (volume_info->domainname) { |
| 2375 | int len = strlen(volume_info->domainname); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2376 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
| 2377 | if (pSesInfo->domainName) |
| 2378 | strcpy(pSesInfo->domainName, |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2379 | volume_info->domainname); |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2380 | } |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2381 | pSesInfo->linux_uid = volume_info->linux_uid; |
| 2382 | pSesInfo->overrideSecFlg = volume_info->secFlg; |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2383 | down(&pSesInfo->sesSem); |
| 2384 | |
| 2385 | /* BB FIXME need to pass vol->secFlgs BB */ |
| 2386 | rc = cifs_setup_session(xid, pSesInfo, |
| 2387 | cifs_sb->local_nls); |
| 2388 | up(&pSesInfo->sesSem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | /* search for existing tcon to this server share */ |
| 2392 | if (!rc) { |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2393 | setup_cifs_sb(volume_info, cifs_sb); |
Steve French | 0ae0efa | 2005-10-10 10:57:19 -0700 | [diff] [blame] | 2394 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2395 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | if (tcon) { |
Steve French | bf82067 | 2005-12-01 22:32:42 -0800 | [diff] [blame] | 2397 | cFYI(1, ("Found match on UNC path")); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2398 | /* existing tcon already has a reference */ |
| 2399 | cifs_put_smb_ses(pSesInfo); |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2400 | if (tcon->seal != volume_info->seal) |
Steve French | 95b1cb9 | 2008-05-15 16:44:38 +0000 | [diff] [blame] | 2401 | cERROR(1, ("transport encryption setting " |
| 2402 | "conflicts with existing tid")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2403 | } else { |
| 2404 | tcon = tconInfoAlloc(); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2405 | if (tcon == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | rc = -ENOMEM; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2407 | goto mount_fail_check; |
| 2408 | } |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2409 | |
Steve French | ab3f992 | 2008-11-17 16:03:00 +0000 | [diff] [blame] | 2410 | tcon->ses = pSesInfo; |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2411 | if (volume_info->password) { |
| 2412 | tcon->password = kstrdup(volume_info->password, |
| 2413 | GFP_KERNEL); |
| 2414 | if (!tcon->password) { |
| 2415 | rc = -ENOMEM; |
| 2416 | goto mount_fail_check; |
| 2417 | } |
| 2418 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2420 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
| 2421 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2422 | cERROR(1, ("Missing share name")); |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2423 | rc = -ENODEV; |
| 2424 | goto mount_fail_check; |
| 2425 | } else { |
| 2426 | /* BB Do we need to wrap sesSem around |
| 2427 | * this TCon call and Unix SetFS as |
| 2428 | * we do on SessSetup and reconnect? */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2429 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2430 | tcon, cifs_sb->local_nls); |
| 2431 | cFYI(1, ("CIFS Tcon rc = %d", rc)); |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2432 | if (volume_info->nodfs) { |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2433 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
| 2434 | cFYI(1, ("DFS disabled (%d)", |
| 2435 | tcon->Flags)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | } |
| 2437 | } |
Jeff Layton | 14fbf50 | 2008-11-14 13:53:46 -0500 | [diff] [blame] | 2438 | if (rc) |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2439 | goto remote_path_check; |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2440 | tcon->seal = volume_info->seal; |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2441 | write_lock(&cifs_tcp_ses_lock); |
| 2442 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); |
| 2443 | write_unlock(&cifs_tcp_ses_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | } |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2445 | |
| 2446 | /* we can have only one retry value for a connection |
| 2447 | to a share so for resources mounted more than once |
| 2448 | to the same server share the last value passed in |
| 2449 | for the retry flag is used */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2450 | tcon->retry = volume_info->retry; |
| 2451 | tcon->nocase = volume_info->nocase; |
| 2452 | tcon->local_lease = volume_info->local_lease; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 2454 | if (pSesInfo) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2455 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
| 2456 | sb->s_maxbytes = (u64) 1 << 63; |
| 2457 | } else |
| 2458 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ |
| 2459 | } |
| 2460 | |
Steve French | 8af1897 | 2007-02-14 04:42:51 +0000 | [diff] [blame] | 2461 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | sb->s_time_gran = 100; |
| 2463 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2464 | if (rc) |
| 2465 | goto remote_path_check; |
| 2466 | |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2467 | cifs_sb->tcon = tcon; |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2468 | |
| 2469 | /* do not care if following two calls succeed - informational */ |
| 2470 | if (!tcon->ipc) { |
| 2471 | CIFSSMBQFSDeviceInfo(xid, tcon); |
| 2472 | CIFSSMBQFSAttributeInfo(xid, tcon); |
| 2473 | } |
| 2474 | |
| 2475 | /* tell server which Unix caps we support */ |
| 2476 | if (tcon->ses->capabilities & CAP_UNIX) |
| 2477 | /* reset of caps checks mount to see if unix extensions |
| 2478 | disabled for just this mount */ |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2479 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
Steve French | d82c2df | 2008-11-15 00:07:26 +0000 | [diff] [blame] | 2480 | else |
| 2481 | tcon->unix_ext = 0; /* server does not support them */ |
| 2482 | |
| 2483 | /* convert forward to back slashes in prepath here if needed */ |
| 2484 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
| 2485 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); |
| 2486 | |
| 2487 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
| 2488 | cifs_sb->rsize = 1024 * 127; |
| 2489 | cFYI(DBG2, ("no very large read support, rsize now 127K")); |
| 2490 | } |
| 2491 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
| 2492 | cifs_sb->wsize = min(cifs_sb->wsize, |
| 2493 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); |
| 2494 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
| 2495 | cifs_sb->rsize = min(cifs_sb->rsize, |
| 2496 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2498 | remote_path_check: |
| 2499 | /* check if a whole path (including prepath) is not remote */ |
| 2500 | if (!rc && cifs_sb->prepathlen && tcon) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2501 | /* build_path_to_root works only when we have a valid tcon */ |
| 2502 | full_path = cifs_build_path_to_root(cifs_sb); |
| 2503 | if (full_path == NULL) { |
| 2504 | rc = -ENOMEM; |
| 2505 | goto mount_fail_check; |
| 2506 | } |
| 2507 | rc = is_path_accessible(xid, tcon, cifs_sb, full_path); |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2508 | if (rc != -EREMOTE) { |
Igor Mammedov | e4cce94 | 2009-02-10 14:10:26 +0300 | [diff] [blame] | 2509 | kfree(full_path); |
| 2510 | goto mount_fail_check; |
| 2511 | } |
| 2512 | kfree(full_path); |
| 2513 | } |
| 2514 | |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2515 | /* get referral if needed */ |
| 2516 | if (rc == -EREMOTE) { |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 2517 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2518 | if (referral_walks_count > MAX_NESTED_LINKS) { |
| 2519 | /* |
| 2520 | * BB: when we implement proper loop detection, |
| 2521 | * we will remove this check. But now we need it |
| 2522 | * to prevent an indefinite loop if 'DFS tree' is |
| 2523 | * misconfigured (i.e. has loops). |
| 2524 | */ |
| 2525 | rc = -ELOOP; |
| 2526 | goto mount_fail_check; |
| 2527 | } |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2528 | /* convert forward to back slashes in prepath here if needed */ |
| 2529 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
| 2530 | convert_delimiter(cifs_sb->prepath, |
| 2531 | CIFS_DIR_SEP(cifs_sb)); |
| 2532 | full_path = build_unc_path_to_root(volume_info, cifs_sb); |
| 2533 | if (IS_ERR(full_path)) { |
| 2534 | rc = PTR_ERR(full_path); |
| 2535 | goto mount_fail_check; |
| 2536 | } |
| 2537 | |
| 2538 | cFYI(1, ("Getting referral for: %s", full_path)); |
| 2539 | rc = get_dfs_path(xid, pSesInfo , full_path + 1, |
| 2540 | cifs_sb->local_nls, &num_referrals, &referrals, |
| 2541 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 2542 | if (!rc && num_referrals > 0) { |
| 2543 | char *fake_devname = NULL; |
| 2544 | |
| 2545 | if (mount_data != mount_data_global) |
| 2546 | kfree(mount_data); |
| 2547 | mount_data = cifs_compose_mount_options( |
| 2548 | cifs_sb->mountdata, full_path + 1, |
| 2549 | referrals, &fake_devname); |
| 2550 | kfree(fake_devname); |
| 2551 | free_dfs_info_array(referrals, num_referrals); |
| 2552 | |
| 2553 | if (tcon) |
| 2554 | cifs_put_tcon(tcon); |
| 2555 | else if (pSesInfo) |
| 2556 | cifs_put_smb_ses(pSesInfo); |
| 2557 | |
| 2558 | cleanup_volume_info(&volume_info); |
| 2559 | FreeXid(xid); |
| 2560 | kfree(full_path); |
Igor Mammedov | 5c2503a | 2009-04-21 19:31:05 +0400 | [diff] [blame] | 2561 | referral_walks_count++; |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2562 | goto try_mount_again; |
| 2563 | } |
Steve French | d036f50 | 2009-04-03 03:12:08 +0000 | [diff] [blame] | 2564 | #else /* No DFS support, return error on mount */ |
| 2565 | rc = -EOPNOTSUPP; |
| 2566 | #endif |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2567 | } |
| 2568 | |
| 2569 | mount_fail_check: |
| 2570 | /* on error free sesinfo and tcon struct if needed */ |
| 2571 | if (rc) { |
| 2572 | if (mount_data != mount_data_global) |
| 2573 | kfree(mount_data); |
| 2574 | /* If find_unc succeeded then rc == 0 so we can not end */ |
| 2575 | /* up accidently freeing someone elses tcon struct */ |
| 2576 | if (tcon) |
| 2577 | cifs_put_tcon(tcon); |
| 2578 | else if (pSesInfo) |
| 2579 | cifs_put_smb_ses(pSesInfo); |
| 2580 | else |
| 2581 | cifs_put_tcp_session(srvTcp); |
| 2582 | goto out; |
| 2583 | } |
| 2584 | |
Jeff Layton | 7586b76 | 2008-12-01 18:41:49 -0500 | [diff] [blame] | 2585 | /* volume_info->password is freed above when existing session found |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | (in which case it is not needed anymore) but when new sesion is created |
| 2587 | the password ptr is put in the new session structure (in which case the |
| 2588 | password will be freed at unmount time) */ |
Jeff Layton | 70fe7dc | 2007-11-16 22:21:07 +0000 | [diff] [blame] | 2589 | out: |
| 2590 | /* zero out password before freeing */ |
Igor Mammedov | 1bfe73c | 2009-04-01 17:54:42 +0400 | [diff] [blame] | 2591 | cleanup_volume_info(&volume_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2592 | FreeXid(xid); |
| 2593 | return rc; |
| 2594 | } |
| 2595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | int |
| 2597 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, |
| 2598 | const char *tree, struct cifsTconInfo *tcon, |
| 2599 | const struct nls_table *nls_codepage) |
| 2600 | { |
| 2601 | struct smb_hdr *smb_buffer; |
| 2602 | struct smb_hdr *smb_buffer_response; |
| 2603 | TCONX_REQ *pSMB; |
| 2604 | TCONX_RSP *pSMBr; |
| 2605 | unsigned char *bcc_ptr; |
| 2606 | int rc = 0; |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2607 | int length, bytes_left; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | __u16 count; |
| 2609 | |
| 2610 | if (ses == NULL) |
| 2611 | return -EIO; |
| 2612 | |
| 2613 | smb_buffer = cifs_buf_get(); |
| 2614 | if (smb_buffer == NULL) { |
| 2615 | return -ENOMEM; |
| 2616 | } |
| 2617 | smb_buffer_response = smb_buffer; |
| 2618 | |
| 2619 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, |
| 2620 | NULL /*no tid */ , 4 /*wct */ ); |
Steve French | 1982c34 | 2005-08-17 12:38:22 -0700 | [diff] [blame] | 2621 | |
| 2622 | smb_buffer->Mid = GetNextMid(ses->server); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2623 | smb_buffer->Uid = ses->Suid; |
| 2624 | pSMB = (TCONX_REQ *) smb_buffer; |
| 2625 | pSMBr = (TCONX_RSP *) smb_buffer_response; |
| 2626 | |
| 2627 | pSMB->AndXCommand = 0xFF; |
| 2628 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | bcc_ptr = &pSMB->Password[0]; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2630 | if ((ses->server->secMode) & SECMODE_USER) { |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2631 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2632 | *bcc_ptr = 0; /* password is null byte */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2633 | bcc_ptr++; /* skip password */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2634 | /* already aligned so no need to do it below */ |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2635 | } else { |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2636 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2637 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
| 2638 | specified as required (when that support is added to |
| 2639 | the vfs in the future) as only NTLM or the much |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2640 | weaker LANMAN (which we do not send by default) is accepted |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2641 | by Samba (not sure whether other servers allow |
| 2642 | NTLMv2 password here) */ |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2643 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2644 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2645 | (ses->server->secType == LANMAN)) |
| 2646 | calc_lanman_hash(tcon->password, ses->server->cryptKey, |
Jeff Layton | 4e53a3f | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2647 | ses->server->secMode & |
| 2648 | SECMODE_PW_ENCRYPT ? true : false, |
| 2649 | bcc_ptr); |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2650 | else |
| 2651 | #endif /* CIFS_WEAK_PW_HASH */ |
Jeff Layton | 00e485b | 2008-12-05 20:41:21 -0500 | [diff] [blame] | 2652 | SMBNTencrypt(tcon->password, ses->server->cryptKey, |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2653 | bcc_ptr); |
| 2654 | |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2655 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2656 | if (ses->capabilities & CAP_UNICODE) { |
Steve French | 7c7b25b | 2006-06-01 19:20:10 +0000 | [diff] [blame] | 2657 | /* must align unicode strings */ |
| 2658 | *bcc_ptr = 0; /* null byte password */ |
| 2659 | bcc_ptr++; |
| 2660 | } |
Steve French | eeac804 | 2006-01-13 21:34:58 -0800 | [diff] [blame] | 2661 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2662 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2663 | if (ses->server->secMode & |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 2664 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2665 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
| 2666 | |
| 2667 | if (ses->capabilities & CAP_STATUS32) { |
| 2668 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
| 2669 | } |
| 2670 | if (ses->capabilities & CAP_DFS) { |
| 2671 | smb_buffer->Flags2 |= SMBFLG2_DFS; |
| 2672 | } |
| 2673 | if (ses->capabilities & CAP_UNICODE) { |
| 2674 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; |
| 2675 | length = |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2676 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
| 2677 | 6 /* max utf8 char length in bytes */ * |
Steve French | a878fb2 | 2006-05-30 18:04:19 +0000 | [diff] [blame] | 2678 | (/* server len*/ + 256 /* share len */), nls_codepage); |
| 2679 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | bcc_ptr += 2; /* skip trailing null */ |
| 2681 | } else { /* ASCII */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | strcpy(bcc_ptr, tree); |
| 2683 | bcc_ptr += strlen(tree) + 1; |
| 2684 | } |
| 2685 | strcpy(bcc_ptr, "?????"); |
| 2686 | bcc_ptr += strlen("?????"); |
| 2687 | bcc_ptr += 1; |
| 2688 | count = bcc_ptr - &pSMB->Password[0]; |
| 2689 | pSMB->hdr.smb_buf_length += count; |
| 2690 | pSMB->ByteCount = cpu_to_le16(count); |
| 2691 | |
Steve French | 133672e | 2007-11-13 22:41:37 +0000 | [diff] [blame] | 2692 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
| 2693 | CIFS_STD_OP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2695 | /* above now done in SendReceive */ |
| 2696 | if ((rc == 0) && (tcon != NULL)) { |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 2697 | bool is_unicode; |
| 2698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | tcon->tidStatus = CifsGood; |
Steve French | 3b79521 | 2008-11-13 19:45:32 +0000 | [diff] [blame] | 2700 | tcon->need_reconnect = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | tcon->tid = smb_buffer_response->Tid; |
| 2702 | bcc_ptr = pByteArea(smb_buffer_response); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2703 | bytes_left = BCC(smb_buffer_response); |
| 2704 | length = strnlen(bcc_ptr, bytes_left - 2); |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 2705 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) |
| 2706 | is_unicode = true; |
| 2707 | else |
| 2708 | is_unicode = false; |
| 2709 | |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2710 | |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2711 | /* skip service field (NB: this field is always ASCII) */ |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 2712 | if (length == 3) { |
| 2713 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && |
| 2714 | (bcc_ptr[2] == 'C')) { |
| 2715 | cFYI(1, ("IPC connection")); |
| 2716 | tcon->ipc = 1; |
| 2717 | } |
| 2718 | } else if (length == 2) { |
| 2719 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { |
| 2720 | /* the most common case */ |
| 2721 | cFYI(1, ("disk share connection")); |
| 2722 | } |
| 2723 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2724 | bcc_ptr += length + 1; |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2725 | bytes_left -= (length + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2727 | |
| 2728 | /* mostly informational -- no need to fail on error here */ |
Steve French | d185cda | 2009-04-30 17:45:10 +0000 | [diff] [blame] | 2729 | tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr, |
Steve French | 0e0d2cf | 2009-05-01 05:27:32 +0000 | [diff] [blame] | 2730 | bytes_left, is_unicode, |
Jeff Layton | cc20c03 | 2009-04-30 07:16:21 -0400 | [diff] [blame] | 2731 | nls_codepage); |
| 2732 | |
| 2733 | cFYI(1, ("nativeFileSystem=%s", tcon->nativeFileSystem)); |
| 2734 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2735 | if ((smb_buffer_response->WordCount == 3) || |
Steve French | 1a4e15a | 2006-10-12 21:33:51 +0000 | [diff] [blame] | 2736 | (smb_buffer_response->WordCount == 7)) |
| 2737 | /* field is in same location */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 2738 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
| 2739 | else |
| 2740 | tcon->Flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
| 2742 | } else if ((rc == 0) && tcon == NULL) { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2743 | /* all we need to save for IPC$ connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2744 | ses->ipc_tid = smb_buffer_response->Tid; |
| 2745 | } |
| 2746 | |
Mariusz Kozlowski | a8a11d3 | 2007-10-03 16:41:24 +0000 | [diff] [blame] | 2747 | cifs_buf_release(smb_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | return rc; |
| 2749 | } |
| 2750 | |
| 2751 | int |
| 2752 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) |
| 2753 | { |
| 2754 | int rc = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2755 | char *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2756 | |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 2757 | if (cifs_sb->tcon) |
| 2758 | cifs_put_tcon(cifs_sb->tcon); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2759 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | cifs_sb->tcon = NULL; |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 2761 | tmp = cifs_sb->prepath; |
| 2762 | cifs_sb->prepathlen = 0; |
| 2763 | cifs_sb->prepath = NULL; |
| 2764 | kfree(tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | |
Steve French | 88e7d70 | 2008-01-03 17:37:09 +0000 | [diff] [blame] | 2766 | return rc; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2767 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | |
| 2769 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2770 | struct nls_table *nls_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2771 | { |
| 2772 | int rc = 0; |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 2773 | int first_time = 0; |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2774 | struct TCP_Server_Info *server = pSesInfo->server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | |
| 2776 | /* what if server changes its buffer size after dropping the session? */ |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2777 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2779 | if (rc == -EAGAIN) { |
| 2780 | /* retry only once on 1st time connection */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2781 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2782 | if (rc == -EAGAIN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2783 | rc = -EHOSTDOWN; |
| 2784 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2785 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2786 | spin_lock(&GlobalMid_Lock); |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2787 | if (server->tcpStatus != CifsExiting) |
| 2788 | server->tcpStatus = CifsGood; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | else |
| 2790 | rc = -EHOSTDOWN; |
| 2791 | spin_unlock(&GlobalMid_Lock); |
| 2792 | |
| 2793 | } |
Steve French | ad009ac | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 2794 | first_time = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | } |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 2796 | |
| 2797 | if (rc) |
| 2798 | goto ss_err_exit; |
| 2799 | |
| 2800 | pSesInfo->flags = 0; |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2801 | pSesInfo->capabilities = server->capabilities; |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 2802 | if (linuxExtEnabled == 0) |
| 2803 | pSesInfo->capabilities &= (~CAP_UNIX); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 2804 | |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 2805 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
Jeff Layton | cb7691b | 2008-08-18 15:41:05 -0400 | [diff] [blame] | 2806 | server->secMode, server->capabilities, server->timeAdj)); |
| 2807 | |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 2808 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 2809 | if (rc) { |
| 2810 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
| 2811 | } else { |
| 2812 | cFYI(1, ("CIFS Session Established successfully")); |
Steve French | 20418ac | 2009-04-30 16:13:32 +0000 | [diff] [blame] | 2813 | spin_lock(&GlobalMid_Lock); |
| 2814 | pSesInfo->status = CifsGood; |
| 2815 | pSesInfo->need_reconnect = false; |
| 2816 | spin_unlock(&GlobalMid_Lock); |
Steve French | 26b994f | 2008-08-06 05:11:33 +0000 | [diff] [blame] | 2817 | } |
| 2818 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2819 | ss_err_exit: |
| 2820 | return rc; |
| 2821 | } |
| 2822 | |