Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/cifsfs.c |
| 3 | * |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * Common Internet FileSystem (CIFS) client |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Lesser General Public License as published |
| 11 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public License |
| 20 | * along with this library; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | /* Note that BB means BUGBUG (ie something to fix eventually) */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/fs.h> |
| 28 | #include <linux/mount.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/list.h> |
| 32 | #include <linux/seq_file.h> |
| 33 | #include <linux/vfs.h> |
| 34 | #include <linux/mempool.h> |
Steve French | 6ab16d2 | 2005-11-29 20:55:11 -0800 | [diff] [blame] | 35 | #include <linux/delay.h> |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 36 | #include <linux/kthread.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 37 | #include <linux/freezer.h> |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 38 | #include <linux/namei.h> |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 39 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "cifsfs.h" |
| 41 | #include "cifspdu.h" |
| 42 | #define DECLARE_GLOBALS_HERE |
| 43 | #include "cifsglob.h" |
| 44 | #include "cifsproto.h" |
| 45 | #include "cifs_debug.h" |
| 46 | #include "cifs_fs_sb.h" |
| 47 | #include <linux/mm.h> |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 48 | #include <linux/key-type.h> |
Jeff Layton | e545937 | 2007-11-03 05:11:06 +0000 | [diff] [blame] | 49 | #include "cifs_spnego.h" |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 50 | #include "fscache.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */ |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | int cifsFYI = 0; |
| 54 | int cifsERROR = 1; |
| 55 | int traceSMB = 0; |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 56 | bool enable_oplocks = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | unsigned int linuxExtEnabled = 1; |
| 58 | unsigned int lookupCacheEnabled = 1; |
| 59 | unsigned int multiuser_mount = 0; |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 60 | unsigned int global_secflags = CIFSSEC_DEF; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 61 | /* unsigned int ntlmv2_support = 0; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | unsigned int sign_CIFS_PDUs = 1; |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 63 | static const struct super_operations cifs_super_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
| 65 | module_param(CIFSMaxBufSize, int, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 66 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
| 67 | "Default: 16384 Range: 8192 to 130048"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
| 69 | module_param(cifs_min_rcv, int, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 70 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
| 71 | "1 to 64"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | unsigned int cifs_min_small = 30; |
| 73 | module_param(cifs_min_small, int, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 74 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
| 75 | "Range: 2 to 256"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
Jeff Layton | fef33df | 2011-10-19 15:30:37 -0400 | [diff] [blame] | 77 | module_param(cifs_max_pending, int, 0444); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 78 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 79 | "Default: 32767 Range: 2 to 32767."); |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 80 | module_param(enable_oplocks, bool, 0644); |
| 81 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks (bool). Default:" |
| 82 | "y/Y/1"); |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | extern mempool_t *cifs_sm_req_poolp; |
| 85 | extern mempool_t *cifs_req_poolp; |
| 86 | extern mempool_t *cifs_mid_poolp; |
| 87 | |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 88 | struct workqueue_struct *cifsiod_wq; |
| 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | static int |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 91 | cifs_read_super(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
| 93 | struct inode *inode; |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 94 | struct cifs_sb_info *cifs_sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | int rc = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 96 | |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 97 | cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 99 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
| 100 | sb->s_flags |= MS_POSIXACL; |
| 101 | |
| 102 | if (cifs_sb_master_tcon(cifs_sb)->ses->capabilities & CAP_LARGE_FILES) |
| 103 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 104 | else |
| 105 | sb->s_maxbytes = MAX_NON_LFS; |
| 106 | |
| 107 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
| 108 | sb->s_time_gran = 100; |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | sb->s_magic = CIFS_MAGIC_NUMBER; |
| 111 | sb->s_op = &cifs_super_ops; |
Jens Axboe | 8044f7f | 2010-04-22 12:09:48 +0200 | [diff] [blame] | 112 | sb->s_bdi = &cifs_sb->bdi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
| 114 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ |
Shirish Pargaonkar | 9b6763e | 2011-02-21 23:56:59 -0600 | [diff] [blame] | 115 | inode = cifs_root_iget(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 117 | if (IS_ERR(inode)) { |
| 118 | rc = PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | goto out_no_root; |
| 120 | } |
| 121 | |
Al Viro | 48fde70 | 2012-01-08 22:15:13 -0500 | [diff] [blame] | 122 | sb->s_root = d_make_root(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | if (!sb->s_root) { |
| 124 | rc = -ENOMEM; |
| 125 | goto out_no_root; |
| 126 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 127 | |
Al Viro | 1c929cf | 2010-12-18 11:43:51 -0500 | [diff] [blame] | 128 | /* do that *after* d_alloc_root() - we want NULL ->d_op for root here */ |
| 129 | if (cifs_sb_master_tcon(cifs_sb)->nocase) |
| 130 | sb->s_d_op = &cifs_ci_dentry_ops; |
| 131 | else |
| 132 | sb->s_d_op = &cifs_dentry_ops; |
| 133 | |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 134 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 135 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 136 | cFYI(1, "export ops supported"); |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 137 | sb->s_export_op = &cifs_export_ops; |
| 138 | } |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 139 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
| 141 | return 0; |
| 142 | |
| 143 | out_no_root: |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 144 | cERROR(1, "cifs_read_super: get root inode failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | return rc; |
| 146 | } |
| 147 | |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 148 | static void cifs_kill_sb(struct super_block *sb) |
| 149 | { |
| 150 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 151 | kill_anon_super(sb); |
Al Viro | 98ab494 | 2011-06-17 09:32:10 -0400 | [diff] [blame] | 152 | cifs_umount(cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | static int |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 156 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 158 | struct super_block *sb = dentry->d_sb; |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 159 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 160 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Steve French | c81156d | 2005-04-28 22:41:07 -0700 | [diff] [blame] | 161 | int rc = -EOPNOTSUPP; |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 162 | int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
| 164 | xid = GetXid(); |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | buf->f_type = CIFS_MAGIC_NUMBER; |
| 167 | |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 168 | /* |
| 169 | * PATH_MAX may be too long - it would presumably be total path, |
| 170 | * but note that some servers (includinng Samba 3) have a shorter |
| 171 | * maximum path. |
| 172 | * |
| 173 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. |
| 174 | */ |
| 175 | buf->f_namelen = PATH_MAX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | buf->f_files = 0; /* undefined */ |
| 177 | buf->f_ffree = 0; /* unlimited */ |
| 178 | |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 179 | /* |
| 180 | * We could add a second check for a QFS Unix capability bit |
| 181 | */ |
| 182 | if ((tcon->ses->capabilities & CAP_UNIX) && |
| 183 | (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability))) |
| 184 | rc = CIFSSMBQFSPosixInfo(xid, tcon, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 186 | /* |
| 187 | * Only need to call the old QFSInfo if failed on newer one, |
| 188 | * e.g. by OS/2. |
| 189 | **/ |
| 190 | if (rc && (tcon->ses->capabilities & CAP_NT_SMBS)) |
| 191 | rc = CIFSSMBQFSInfo(xid, tcon, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 193 | /* |
| 194 | * Some old Windows servers also do not support level 103, retry with |
| 195 | * older level one if old server failed the previous call or we |
| 196 | * bypassed it because we detected that this was an older LANMAN sess |
| 197 | */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 198 | if (rc) |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 199 | rc = SMBOldQFSInfo(xid, tcon, buf); |
| 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | FreeXid(xid); |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 202 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | } |
| 204 | |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 205 | static int cifs_permission(struct inode *inode, int mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
| 207 | struct cifs_sb_info *cifs_sb; |
| 208 | |
| 209 | cifs_sb = CIFS_SB(inode->i_sb); |
| 210 | |
Miklos Szeredi | f696a36 | 2008-07-31 13:41:58 +0200 | [diff] [blame] | 211 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
| 212 | if ((mask & MAY_EXEC) && !execute_ok(inode)) |
| 213 | return -EACCES; |
| 214 | else |
| 215 | return 0; |
| 216 | } else /* file mode might have been restricted at mount time |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 217 | on the client (above and beyond ACL on servers) for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | servers which do not support setting and viewing mode bits, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 219 | so allowing client to check permissions is useful */ |
Al Viro | 2830ba7 | 2011-06-20 19:16:29 -0400 | [diff] [blame] | 220 | return generic_permission(inode, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 223 | static struct kmem_cache *cifs_inode_cachep; |
| 224 | static struct kmem_cache *cifs_req_cachep; |
| 225 | static struct kmem_cache *cifs_mid_cachep; |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 226 | static struct kmem_cache *cifs_sm_req_cachep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | mempool_t *cifs_sm_req_poolp; |
| 228 | mempool_t *cifs_req_poolp; |
| 229 | mempool_t *cifs_mid_poolp; |
| 230 | |
| 231 | static struct inode * |
| 232 | cifs_alloc_inode(struct super_block *sb) |
| 233 | { |
| 234 | struct cifsInodeInfo *cifs_inode; |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 235 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (!cifs_inode) |
| 237 | return NULL; |
| 238 | cifs_inode->cifsAttrs = 0x20; /* default */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | cifs_inode->time = 0; |
| 240 | /* Until the file is open and we have gotten oplock |
| 241 | info back from the server, can not assume caching of |
| 242 | file data or metadata */ |
Pavel Shilovsky | c672362 | 2010-11-03 10:58:57 +0300 | [diff] [blame] | 243 | cifs_set_oplock_level(cifs_inode, 0); |
Jeff Layton | 9a8165f | 2008-10-17 21:03:20 -0400 | [diff] [blame] | 244 | cifs_inode->delete_pending = false; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 245 | cifs_inode->invalid_mapping = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
Jeff Layton | fbec9ab | 2009-04-03 13:44:00 -0400 | [diff] [blame] | 247 | cifs_inode->server_eof = 0; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 248 | cifs_inode->uniqueid = 0; |
| 249 | cifs_inode->createtime = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 250 | |
Steve French | 1b2b212 | 2007-02-17 04:30:54 +0000 | [diff] [blame] | 251 | /* Can not set i_flags here - they get immediately overwritten |
| 252 | to zero by the VFS */ |
| 253 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME;*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
| 255 | return &cifs_inode->vfs_inode; |
| 256 | } |
| 257 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 258 | static void cifs_i_callback(struct rcu_head *head) |
| 259 | { |
| 260 | struct inode *inode = container_of(head, struct inode, i_rcu); |
| 261 | INIT_LIST_HEAD(&inode->i_dentry); |
| 262 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); |
| 263 | } |
| 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | static void |
| 266 | cifs_destroy_inode(struct inode *inode) |
| 267 | { |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 268 | call_rcu(&inode->i_rcu, cifs_i_callback); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 271 | static void |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 272 | cifs_evict_inode(struct inode *inode) |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 273 | { |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 274 | truncate_inode_pages(&inode->i_data, 0); |
| 275 | end_writeback(inode); |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 276 | cifs_fscache_release_inode_cookie(inode); |
| 277 | } |
| 278 | |
| 279 | static void |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 280 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) |
| 281 | { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 282 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
| 283 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; |
| 284 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 285 | seq_printf(s, ",addr="); |
| 286 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 287 | switch (server->dstaddr.ss_family) { |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 288 | case AF_INET: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 289 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 290 | break; |
| 291 | case AF_INET6: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 292 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
| 293 | if (sa6->sin6_scope_id) |
| 294 | seq_printf(s, "%%%u", sa6->sin6_scope_id); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 295 | break; |
| 296 | default: |
| 297 | seq_printf(s, "(unknown)"); |
| 298 | } |
| 299 | } |
| 300 | |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 301 | static void |
| 302 | cifs_show_security(struct seq_file *s, struct TCP_Server_Info *server) |
| 303 | { |
| 304 | seq_printf(s, ",sec="); |
| 305 | |
| 306 | switch (server->secType) { |
| 307 | case LANMAN: |
| 308 | seq_printf(s, "lanman"); |
| 309 | break; |
| 310 | case NTLMv2: |
| 311 | seq_printf(s, "ntlmv2"); |
| 312 | break; |
| 313 | case NTLM: |
| 314 | seq_printf(s, "ntlm"); |
| 315 | break; |
| 316 | case Kerberos: |
| 317 | seq_printf(s, "krb5"); |
| 318 | break; |
| 319 | case RawNTLMSSP: |
| 320 | seq_printf(s, "ntlmssp"); |
| 321 | break; |
| 322 | default: |
| 323 | /* shouldn't ever happen */ |
| 324 | seq_printf(s, "unknown"); |
| 325 | break; |
| 326 | } |
| 327 | |
| 328 | if (server->sec_mode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
| 329 | seq_printf(s, "i"); |
| 330 | } |
| 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | /* |
| 333 | * cifs_show_options() is for displaying mount options in /proc/mounts. |
| 334 | * Not all settable options are displayed but most of the important |
| 335 | * ones are. |
| 336 | */ |
| 337 | static int |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 338 | cifs_show_options(struct seq_file *s, struct dentry *root) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 340 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 341 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 342 | struct sockaddr *srcaddr; |
| 343 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 345 | cifs_show_security(s, tcon->ses->server); |
| 346 | |
Jeff Layton | 8e047d0 | 2009-08-28 10:11:10 -0400 | [diff] [blame] | 347 | seq_printf(s, ",unc=%s", tcon->treeName); |
Jeff Layton | 29e07c8 | 2010-09-29 19:51:12 -0400 | [diff] [blame] | 348 | |
| 349 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) |
| 350 | seq_printf(s, ",multiuser"); |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 351 | else if (tcon->ses->user_name) |
| 352 | seq_printf(s, ",username=%s", tcon->ses->user_name); |
Jeff Layton | 29e07c8 | 2010-09-29 19:51:12 -0400 | [diff] [blame] | 353 | |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 354 | if (tcon->ses->domainName) |
| 355 | seq_printf(s, ",domain=%s", tcon->ses->domainName); |
| 356 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 357 | if (srcaddr->sa_family != AF_UNSPEC) { |
| 358 | struct sockaddr_in *saddr4; |
| 359 | struct sockaddr_in6 *saddr6; |
| 360 | saddr4 = (struct sockaddr_in *)srcaddr; |
| 361 | saddr6 = (struct sockaddr_in6 *)srcaddr; |
| 362 | if (srcaddr->sa_family == AF_INET6) |
| 363 | seq_printf(s, ",srcaddr=%pI6c", |
| 364 | &saddr6->sin6_addr); |
| 365 | else if (srcaddr->sa_family == AF_INET) |
| 366 | seq_printf(s, ",srcaddr=%pI4", |
| 367 | &saddr4->sin_addr.s_addr); |
| 368 | else |
| 369 | seq_printf(s, ",srcaddr=BAD-AF:%i", |
| 370 | (int)(srcaddr->sa_family)); |
| 371 | } |
| 372 | |
Sachin Prabhu | 28f8881 | 2012-04-24 15:28:30 +0100 | [diff] [blame] | 373 | seq_printf(s, ",uid=%u", cifs_sb->mnt_uid); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 374 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
| 375 | seq_printf(s, ",forceuid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 376 | else |
| 377 | seq_printf(s, ",noforceuid"); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 378 | |
Sachin Prabhu | 28f8881 | 2012-04-24 15:28:30 +0100 | [diff] [blame] | 379 | seq_printf(s, ",gid=%u", cifs_sb->mnt_gid); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 380 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
| 381 | seq_printf(s, ",forcegid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 382 | else |
| 383 | seq_printf(s, ",noforcegid"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 384 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 385 | cifs_show_address(s, tcon->ses->server); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 386 | |
| 387 | if (!tcon->unix_ext) |
Al Viro | 5206efd | 2011-07-26 03:22:14 -0400 | [diff] [blame] | 388 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 389 | cifs_sb->mnt_file_mode, |
| 390 | cifs_sb->mnt_dir_mode); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 391 | if (tcon->seal) |
| 392 | seq_printf(s, ",seal"); |
| 393 | if (tcon->nocase) |
| 394 | seq_printf(s, ",nocase"); |
| 395 | if (tcon->retry) |
| 396 | seq_printf(s, ",hard"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 397 | if (tcon->unix_ext) |
| 398 | seq_printf(s, ",unix"); |
| 399 | else |
| 400 | seq_printf(s, ",nounix"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 401 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
| 402 | seq_printf(s, ",posixpaths"); |
| 403 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
| 404 | seq_printf(s, ",setuids"); |
| 405 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
| 406 | seq_printf(s, ",serverino"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 407 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
| 408 | seq_printf(s, ",rwpidforward"); |
| 409 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
| 410 | seq_printf(s, ",forcemand"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 411 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
| 412 | seq_printf(s, ",directio"); |
| 413 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
| 414 | seq_printf(s, ",nouser_xattr"); |
| 415 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
| 416 | seq_printf(s, ",mapchars"); |
| 417 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
| 418 | seq_printf(s, ",sfu"); |
| 419 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 420 | seq_printf(s, ",nobrl"); |
| 421 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
| 422 | seq_printf(s, ",cifsacl"); |
| 423 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
| 424 | seq_printf(s, ",dynperm"); |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 425 | if (root->d_sb->s_flags & MS_POSIXACL) |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 426 | seq_printf(s, ",acl"); |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 427 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
| 428 | seq_printf(s, ",mfsymlinks"); |
Suresh Jayaraman | 476428f | 2010-11-24 17:49:07 +0530 | [diff] [blame] | 429 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
| 430 | seq_printf(s, ",fsc"); |
Steve French | 71c424b | 2011-10-19 20:44:48 -0500 | [diff] [blame] | 431 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
| 432 | seq_printf(s, ",nostrictsync"); |
| 433 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
| 434 | seq_printf(s, ",noperm"); |
Sachin Prabhu | 875cd04 | 2011-10-11 13:43:50 +0100 | [diff] [blame] | 435 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) |
| 436 | seq_printf(s, ",strictcache"); |
Sachin Prabhu | 3c7c87f | 2012-04-24 15:28:14 +0100 | [diff] [blame] | 437 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
| 438 | seq_printf(s, ",backupuid=%u", cifs_sb->mnt_backupuid); |
| 439 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
| 440 | seq_printf(s, ",backupgid=%u", cifs_sb->mnt_backupgid); |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 441 | |
Sachin Prabhu | 28f8881 | 2012-04-24 15:28:30 +0100 | [diff] [blame] | 442 | seq_printf(s, ",rsize=%u", cifs_sb->rsize); |
| 443 | seq_printf(s, ",wsize=%u", cifs_sb->wsize); |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 444 | /* convert actimeo and display it in seconds */ |
Sachin Prabhu | 156d179 | 2012-04-25 12:10:14 +0100 | [diff] [blame] | 445 | seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 446 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | return 0; |
| 448 | } |
| 449 | |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 450 | static void cifs_umount_begin(struct super_block *sb) |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 451 | { |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 452 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 453 | struct cifs_tcon *tcon; |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 454 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 455 | if (cifs_sb == NULL) |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 456 | return; |
| 457 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 458 | tcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 459 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 460 | spin_lock(&cifs_tcp_ses_lock); |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 461 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
| 462 | /* we have other mounts to same share or we have |
| 463 | already tried to force umount this and woken up |
| 464 | all waiting network requests, nothing to do */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 465 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 466 | return; |
| 467 | } else if (tcon->tc_count == 1) |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 468 | tcon->tidStatus = CifsExiting; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 469 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 470 | |
Steve French | 3a5ff61 | 2006-07-14 22:37:11 +0000 | [diff] [blame] | 471 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 472 | /* cancel_notify_requests(tcon); */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 473 | if (tcon->ses && tcon->ses->server) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 474 | cFYI(1, "wake up tasks now - umount begin not complete"); |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 475 | wake_up_all(&tcon->ses->server->request_q); |
Steve French | 6ab16d2 | 2005-11-29 20:55:11 -0800 | [diff] [blame] | 476 | wake_up_all(&tcon->ses->server->response_q); |
| 477 | msleep(1); /* yield */ |
| 478 | /* we have to kick the requests once more */ |
| 479 | wake_up_all(&tcon->ses->server->response_q); |
| 480 | msleep(1); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 481 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 482 | |
| 483 | return; |
| 484 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 485 | |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 486 | #ifdef CONFIG_CIFS_STATS2 |
Al Viro | 6413237 | 2011-12-08 20:51:13 -0500 | [diff] [blame] | 487 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 488 | { |
| 489 | /* BB FIXME */ |
| 490 | return 0; |
| 491 | } |
| 492 | #endif |
| 493 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
| 495 | { |
| 496 | *flags |= MS_NODIRATIME; |
| 497 | return 0; |
| 498 | } |
| 499 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 500 | static int cifs_drop_inode(struct inode *inode) |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 501 | { |
| 502 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 503 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 504 | /* no serverino => unconditional eviction */ |
| 505 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || |
| 506 | generic_drop_inode(inode); |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 507 | } |
| 508 | |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 509 | static const struct super_operations cifs_super_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | .statfs = cifs_statfs, |
| 511 | .alloc_inode = cifs_alloc_inode, |
| 512 | .destroy_inode = cifs_destroy_inode, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 513 | .drop_inode = cifs_drop_inode, |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 514 | .evict_inode = cifs_evict_inode, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 515 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
| 516 | function unless later we add lazy close of inodes or unless the |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 517 | kernel forgets to call us with the same number of releases (closes) |
| 518 | as opens */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | .show_options = cifs_show_options, |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 520 | .umount_begin = cifs_umount_begin, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | .remount_fs = cifs_remount, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 522 | #ifdef CONFIG_CIFS_STATS2 |
Steve French | f46d3e1 | 2006-09-30 01:08:55 +0000 | [diff] [blame] | 523 | .show_stats = cifs_show_stats, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 524 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | }; |
| 526 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 527 | /* |
| 528 | * Get root dentry from superblock according to prefix path mount option. |
| 529 | * Return dentry with refcount + 1 on success and NULL otherwise. |
| 530 | */ |
| 531 | static struct dentry * |
| 532 | cifs_get_root(struct smb_vol *vol, struct super_block *sb) |
| 533 | { |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 534 | struct dentry *dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 535 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 536 | char *full_path = NULL; |
| 537 | char *s, *p; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 538 | char sep; |
| 539 | |
| 540 | full_path = cifs_build_path_to_root(vol, cifs_sb, |
| 541 | cifs_sb_master_tcon(cifs_sb)); |
| 542 | if (full_path == NULL) |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 543 | return ERR_PTR(-ENOMEM); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 544 | |
| 545 | cFYI(1, "Get root dentry for %s", full_path); |
| 546 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 547 | sep = CIFS_DIR_SEP(cifs_sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 548 | dentry = dget(sb->s_root); |
| 549 | p = s = full_path; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 550 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 551 | do { |
| 552 | struct inode *dir = dentry->d_inode; |
| 553 | struct dentry *child; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 554 | |
Pavel Shilovsky | 5b980b0 | 2011-08-21 19:30:15 +0400 | [diff] [blame] | 555 | if (!dir) { |
| 556 | dput(dentry); |
| 557 | dentry = ERR_PTR(-ENOENT); |
| 558 | break; |
| 559 | } |
| 560 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 561 | /* skip separators */ |
| 562 | while (*s == sep) |
| 563 | s++; |
| 564 | if (!*s) |
| 565 | break; |
| 566 | p = s++; |
| 567 | /* next separator */ |
| 568 | while (*s && *s != sep) |
| 569 | s++; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 570 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 571 | mutex_lock(&dir->i_mutex); |
| 572 | child = lookup_one_len(p, dentry, s - p); |
| 573 | mutex_unlock(&dir->i_mutex); |
| 574 | dput(dentry); |
| 575 | dentry = child; |
| 576 | } while (!IS_ERR(dentry)); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 577 | kfree(full_path); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 578 | return dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 579 | } |
| 580 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 581 | static int cifs_set_super(struct super_block *sb, void *data) |
| 582 | { |
| 583 | struct cifs_mnt_data *mnt_data = data; |
| 584 | sb->s_fs_info = mnt_data->cifs_sb; |
| 585 | return set_anon_super(sb, NULL); |
| 586 | } |
| 587 | |
Al Viro | d753ed9 | 2010-07-26 12:52:33 +0400 | [diff] [blame] | 588 | static struct dentry * |
| 589 | cifs_do_mount(struct file_system_type *fs_type, |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 590 | int flags, const char *dev_name, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
| 592 | int rc; |
Jan Blunck | db71922 | 2010-08-15 22:51:10 +0200 | [diff] [blame] | 593 | struct super_block *sb; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 594 | struct cifs_sb_info *cifs_sb; |
| 595 | struct smb_vol *volume_info; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 596 | struct cifs_mnt_data mnt_data; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 597 | struct dentry *root; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 599 | cFYI(1, "Devname: %s flags: %d ", dev_name, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 601 | volume_info = cifs_get_volume_info((char *)data, dev_name); |
| 602 | if (IS_ERR(volume_info)) |
| 603 | return ERR_CAST(volume_info); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 604 | |
| 605 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
| 606 | if (cifs_sb == NULL) { |
| 607 | root = ERR_PTR(-ENOMEM); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 608 | goto out_nls; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 609 | } |
| 610 | |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 611 | cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL); |
| 612 | if (cifs_sb->mountdata == NULL) { |
| 613 | root = ERR_PTR(-ENOMEM); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 614 | goto out_cifs_sb; |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 615 | } |
| 616 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 617 | cifs_setup_cifs_sb(volume_info, cifs_sb); |
| 618 | |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 619 | rc = cifs_mount(cifs_sb, volume_info); |
| 620 | if (rc) { |
| 621 | if (!(flags & MS_SILENT)) |
| 622 | cERROR(1, "cifs_mount failed w/return code = %d", rc); |
| 623 | root = ERR_PTR(rc); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 624 | goto out_mountdata; |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 625 | } |
| 626 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 627 | mnt_data.vol = volume_info; |
| 628 | mnt_data.cifs_sb = cifs_sb; |
| 629 | mnt_data.flags = flags; |
| 630 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 631 | sb = sget(fs_type, cifs_match_super, cifs_set_super, &mnt_data); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 632 | if (IS_ERR(sb)) { |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 633 | root = ERR_CAST(sb); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 634 | cifs_umount(cifs_sb); |
Al Viro | d757d71 | 2011-06-17 09:42:43 -0400 | [diff] [blame] | 635 | goto out; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 636 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 638 | if (sb->s_root) { |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 639 | cFYI(1, "Use existing superblock"); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 640 | cifs_umount(cifs_sb); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 641 | } else { |
| 642 | sb->s_flags = flags; |
| 643 | /* BB should we make this contingent on mount parm? */ |
| 644 | sb->s_flags |= MS_NODIRATIME | MS_NOATIME; |
| 645 | |
| 646 | rc = cifs_read_super(sb); |
| 647 | if (rc) { |
| 648 | root = ERR_PTR(rc); |
| 649 | goto out_super; |
| 650 | } |
| 651 | |
| 652 | sb->s_flags |= MS_ACTIVE; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 653 | } |
| 654 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 655 | root = cifs_get_root(volume_info, sb); |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 656 | if (IS_ERR(root)) |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 657 | goto out_super; |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 658 | |
| 659 | cFYI(1, "dentry root is: %p", root); |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 660 | goto out; |
| 661 | |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 662 | out_super: |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 663 | deactivate_locked_super(sb); |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 664 | out: |
Jeff Layton | f9e59bc | 2011-07-06 08:10:37 -0400 | [diff] [blame] | 665 | cifs_cleanup_volume_info(volume_info); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 666 | return root; |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 667 | |
| 668 | out_mountdata: |
| 669 | kfree(cifs_sb->mountdata); |
| 670 | out_cifs_sb: |
| 671 | kfree(cifs_sb); |
| 672 | out_nls: |
| 673 | unload_nls(volume_info->local_nls); |
| 674 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | } |
| 676 | |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 677 | static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, |
| 678 | unsigned long nr_segs, loff_t pos) |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 679 | { |
Josef "Jeff" Sipek | e6a0029 | 2006-12-08 02:36:48 -0800 | [diff] [blame] | 680 | struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode; |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 681 | ssize_t written; |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 682 | int rc; |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 683 | |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 684 | written = generic_file_aio_write(iocb, iov, nr_segs, pos); |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 685 | |
| 686 | if (CIFS_I(inode)->clientCanCacheAll) |
| 687 | return written; |
| 688 | |
| 689 | rc = filemap_fdatawrite(inode->i_mapping); |
| 690 | if (rc) |
| 691 | cFYI(1, "cifs_file_aio_write: %d rc on %p inode", rc, inode); |
| 692 | |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 693 | return written; |
| 694 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 696 | static loff_t cifs_llseek(struct file *file, loff_t offset, int origin) |
| 697 | { |
Josef Bacik | 06222e4 | 2011-07-18 13:21:38 -0400 | [diff] [blame] | 698 | /* |
| 699 | * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
| 700 | * the cached file length |
| 701 | */ |
| 702 | if (origin != SEEK_SET || origin != SEEK_CUR) { |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 703 | int rc; |
| 704 | struct inode *inode = file->f_path.dentry->d_inode; |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 705 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 706 | /* |
| 707 | * We need to be sure that all dirty pages are written and the |
| 708 | * server has the newest file length. |
| 709 | */ |
| 710 | if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping && |
| 711 | inode->i_mapping->nrpages != 0) { |
| 712 | rc = filemap_fdatawait(inode->i_mapping); |
Steve French | 156ecb2 | 2011-05-20 17:00:01 +0000 | [diff] [blame] | 713 | if (rc) { |
| 714 | mapping_set_error(inode->i_mapping, rc); |
| 715 | return rc; |
| 716 | } |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 717 | } |
| 718 | /* |
| 719 | * Some applications poll for the file length in this strange |
| 720 | * way so we must seek to end on non-oplocked files by |
| 721 | * setting the revalidate time to zero. |
| 722 | */ |
| 723 | CIFS_I(inode)->time = 0; |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 724 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 725 | rc = cifs_revalidate_file_attr(file); |
| 726 | if (rc < 0) |
| 727 | return (loff_t)rc; |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 728 | } |
Andi Kleen | ef3d0fd | 2011-09-15 16:06:48 -0700 | [diff] [blame] | 729 | return generic_file_llseek(file, offset, origin); |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 730 | } |
| 731 | |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 732 | static int cifs_setlease(struct file *file, long arg, struct file_lock **lease) |
| 733 | { |
Arnd Bergmann | b89f432 | 2010-09-18 15:09:31 +0200 | [diff] [blame] | 734 | /* note that this is called by vfs setlease with lock_flocks held |
| 735 | to protect *lease from going away */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 736 | struct inode *inode = file->f_path.dentry->d_inode; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 737 | struct cifsFileInfo *cfile = file->private_data; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 738 | |
| 739 | if (!(S_ISREG(inode->i_mode))) |
| 740 | return -EINVAL; |
| 741 | |
| 742 | /* check if file is oplocked */ |
| 743 | if (((arg == F_RDLCK) && |
| 744 | (CIFS_I(inode)->clientCanCacheRead)) || |
| 745 | ((arg == F_WRLCK) && |
| 746 | (CIFS_I(inode)->clientCanCacheAll))) |
| 747 | return generic_setlease(file, arg, lease); |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 748 | else if (tlink_tcon(cfile->tlink)->local_lease && |
| 749 | !CIFS_I(inode)->clientCanCacheRead) |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 750 | /* If the server claims to support oplock on this |
| 751 | file, then we still need to check oplock even |
| 752 | if the local_lease mount option is set, but there |
| 753 | are servers which do not support oplock for which |
| 754 | this mount option may be useful if the user |
| 755 | knows that the file won't be changed on the server |
| 756 | by anyone else */ |
| 757 | return generic_setlease(file, arg, lease); |
Christoph Hellwig | 51ee4b8 | 2010-10-31 08:35:10 -0400 | [diff] [blame] | 758 | else |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 759 | return -EAGAIN; |
| 760 | } |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 761 | |
Igor Mammedov | e6ab158 | 2008-01-11 01:49:48 +0000 | [diff] [blame] | 762 | struct file_system_type cifs_fs_type = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | .owner = THIS_MODULE, |
| 764 | .name = "cifs", |
Al Viro | d753ed9 | 2010-07-26 12:52:33 +0400 | [diff] [blame] | 765 | .mount = cifs_do_mount, |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 766 | .kill_sb = cifs_kill_sb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | /* .fs_flags */ |
| 768 | }; |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 769 | const struct inode_operations cifs_dir_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | .create = cifs_create, |
| 771 | .lookup = cifs_lookup, |
| 772 | .getattr = cifs_getattr, |
| 773 | .unlink = cifs_unlink, |
| 774 | .link = cifs_hardlink, |
| 775 | .mkdir = cifs_mkdir, |
| 776 | .rmdir = cifs_rmdir, |
| 777 | .rename = cifs_rename, |
| 778 | .permission = cifs_permission, |
| 779 | /* revalidate:cifs_revalidate, */ |
| 780 | .setattr = cifs_setattr, |
| 781 | .symlink = cifs_symlink, |
| 782 | .mknod = cifs_mknod, |
| 783 | #ifdef CONFIG_CIFS_XATTR |
| 784 | .setxattr = cifs_setxattr, |
| 785 | .getxattr = cifs_getxattr, |
| 786 | .listxattr = cifs_listxattr, |
| 787 | .removexattr = cifs_removexattr, |
| 788 | #endif |
| 789 | }; |
| 790 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 791 | const struct inode_operations cifs_file_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | /* revalidate:cifs_revalidate, */ |
| 793 | .setattr = cifs_setattr, |
| 794 | .getattr = cifs_getattr, /* do we need this anymore? */ |
| 795 | .rename = cifs_rename, |
| 796 | .permission = cifs_permission, |
| 797 | #ifdef CONFIG_CIFS_XATTR |
| 798 | .setxattr = cifs_setxattr, |
| 799 | .getxattr = cifs_getxattr, |
| 800 | .listxattr = cifs_listxattr, |
| 801 | .removexattr = cifs_removexattr, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 802 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | }; |
| 804 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 805 | const struct inode_operations cifs_symlink_inode_ops = { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 806 | .readlink = generic_readlink, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | .follow_link = cifs_follow_link, |
| 808 | .put_link = cifs_put_link, |
| 809 | .permission = cifs_permission, |
| 810 | /* BB add the following two eventually */ |
| 811 | /* revalidate: cifs_revalidate, |
| 812 | setattr: cifs_notify_change, *//* BB do we need notify change */ |
| 813 | #ifdef CONFIG_CIFS_XATTR |
| 814 | .setxattr = cifs_setxattr, |
| 815 | .getxattr = cifs_getxattr, |
| 816 | .listxattr = cifs_listxattr, |
| 817 | .removexattr = cifs_removexattr, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 818 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | }; |
| 820 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 821 | const struct file_operations cifs_file_ops = { |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 822 | .read = do_sync_read, |
| 823 | .write = do_sync_write, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 824 | .aio_read = generic_file_aio_read, |
| 825 | .aio_write = cifs_file_aio_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | .open = cifs_open, |
| 827 | .release = cifs_close, |
| 828 | .lock = cifs_lock, |
| 829 | .fsync = cifs_fsync, |
| 830 | .flush = cifs_flush, |
| 831 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 832 | .splice_read = generic_file_splice_read, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 833 | .llseek = cifs_llseek, |
Steve French | c67593a | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 834 | #ifdef CONFIG_CIFS_POSIX |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 835 | .unlocked_ioctl = cifs_ioctl, |
Steve French | c67593a | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 836 | #endif /* CONFIG_CIFS_POSIX */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 837 | .setlease = cifs_setlease, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | }; |
| 839 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 840 | const struct file_operations cifs_file_strict_ops = { |
| 841 | .read = do_sync_read, |
| 842 | .write = do_sync_write, |
Pavel Shilovsky | a70307e | 2010-12-14 11:50:41 +0300 | [diff] [blame] | 843 | .aio_read = cifs_strict_readv, |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 844 | .aio_write = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 845 | .open = cifs_open, |
| 846 | .release = cifs_close, |
| 847 | .lock = cifs_lock, |
| 848 | .fsync = cifs_strict_fsync, |
| 849 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 850 | .mmap = cifs_file_strict_mmap, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 851 | .splice_read = generic_file_splice_read, |
| 852 | .llseek = cifs_llseek, |
| 853 | #ifdef CONFIG_CIFS_POSIX |
| 854 | .unlocked_ioctl = cifs_ioctl, |
| 855 | #endif /* CONFIG_CIFS_POSIX */ |
| 856 | .setlease = cifs_setlease, |
| 857 | }; |
| 858 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 859 | const struct file_operations cifs_file_direct_ops = { |
Pavel Shilovsky | 0b81c1c | 2011-03-10 10:11:05 +0300 | [diff] [blame] | 860 | /* BB reevaluate whether they can be done with directio, no cache */ |
| 861 | .read = do_sync_read, |
| 862 | .write = do_sync_write, |
| 863 | .aio_read = cifs_user_readv, |
| 864 | .aio_write = cifs_user_writev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | .open = cifs_open, |
| 866 | .release = cifs_close, |
| 867 | .lock = cifs_lock, |
| 868 | .fsync = cifs_fsync, |
| 869 | .flush = cifs_flush, |
Steve French | a994b8f | 2009-12-07 05:44:46 +0000 | [diff] [blame] | 870 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 871 | .splice_read = generic_file_splice_read, |
Steve French | c67593a | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 872 | #ifdef CONFIG_CIFS_POSIX |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 873 | .unlocked_ioctl = cifs_ioctl, |
Steve French | c67593a | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 874 | #endif /* CONFIG_CIFS_POSIX */ |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 875 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 876 | .setlease = cifs_setlease, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | }; |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 878 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 879 | const struct file_operations cifs_file_nobrl_ops = { |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 880 | .read = do_sync_read, |
| 881 | .write = do_sync_write, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 882 | .aio_read = generic_file_aio_read, |
| 883 | .aio_write = cifs_file_aio_write, |
| 884 | .open = cifs_open, |
| 885 | .release = cifs_close, |
| 886 | .fsync = cifs_fsync, |
| 887 | .flush = cifs_flush, |
| 888 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 889 | .splice_read = generic_file_splice_read, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 890 | .llseek = cifs_llseek, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 891 | #ifdef CONFIG_CIFS_POSIX |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 892 | .unlocked_ioctl = cifs_ioctl, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 893 | #endif /* CONFIG_CIFS_POSIX */ |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 894 | .setlease = cifs_setlease, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 895 | }; |
| 896 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 897 | const struct file_operations cifs_file_strict_nobrl_ops = { |
| 898 | .read = do_sync_read, |
| 899 | .write = do_sync_write, |
Pavel Shilovsky | a70307e | 2010-12-14 11:50:41 +0300 | [diff] [blame] | 900 | .aio_read = cifs_strict_readv, |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 901 | .aio_write = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 902 | .open = cifs_open, |
| 903 | .release = cifs_close, |
| 904 | .fsync = cifs_strict_fsync, |
| 905 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 906 | .mmap = cifs_file_strict_mmap, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 907 | .splice_read = generic_file_splice_read, |
| 908 | .llseek = cifs_llseek, |
| 909 | #ifdef CONFIG_CIFS_POSIX |
| 910 | .unlocked_ioctl = cifs_ioctl, |
| 911 | #endif /* CONFIG_CIFS_POSIX */ |
| 912 | .setlease = cifs_setlease, |
| 913 | }; |
| 914 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 915 | const struct file_operations cifs_file_direct_nobrl_ops = { |
Pavel Shilovsky | 0b81c1c | 2011-03-10 10:11:05 +0300 | [diff] [blame] | 916 | /* BB reevaluate whether they can be done with directio, no cache */ |
| 917 | .read = do_sync_read, |
| 918 | .write = do_sync_write, |
| 919 | .aio_read = cifs_user_readv, |
| 920 | .aio_write = cifs_user_writev, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 921 | .open = cifs_open, |
| 922 | .release = cifs_close, |
| 923 | .fsync = cifs_fsync, |
| 924 | .flush = cifs_flush, |
Pavel Shilovsky | 810627a0 | 2010-03-27 02:00:49 +0000 | [diff] [blame] | 925 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 926 | .splice_read = generic_file_splice_read, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 927 | #ifdef CONFIG_CIFS_POSIX |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 928 | .unlocked_ioctl = cifs_ioctl, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 929 | #endif /* CONFIG_CIFS_POSIX */ |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 930 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 931 | .setlease = cifs_setlease, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 932 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 934 | const struct file_operations cifs_dir_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | .readdir = cifs_readdir, |
| 936 | .release = cifs_closedir, |
| 937 | .read = generic_read_dir, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 938 | .unlocked_ioctl = cifs_ioctl, |
Christoph Hellwig | 3222a3e | 2008-09-03 21:53:01 +0200 | [diff] [blame] | 939 | .llseek = generic_file_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | }; |
| 941 | |
| 942 | static void |
Alexey Dobriyan | 51cc506 | 2008-07-25 19:45:34 -0700 | [diff] [blame] | 943 | cifs_init_once(void *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | { |
| 945 | struct cifsInodeInfo *cifsi = inode; |
| 946 | |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 947 | inode_init_once(&cifsi->vfs_inode); |
Pavel Shilovsky | d59dad2 | 2011-09-22 09:53:59 +0400 | [diff] [blame] | 948 | INIT_LIST_HEAD(&cifsi->llist); |
| 949 | mutex_init(&cifsi->lock_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | static int |
| 953 | cifs_init_inodecache(void) |
| 954 | { |
| 955 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 956 | sizeof(struct cifsInodeInfo), |
Paul Jackson | fffb60f | 2006-03-24 03:16:06 -0800 | [diff] [blame] | 957 | 0, (SLAB_RECLAIM_ACCOUNT| |
| 958 | SLAB_MEM_SPREAD), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 959 | cifs_init_once); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | if (cifs_inode_cachep == NULL) |
| 961 | return -ENOMEM; |
| 962 | |
| 963 | return 0; |
| 964 | } |
| 965 | |
| 966 | static void |
| 967 | cifs_destroy_inodecache(void) |
| 968 | { |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 969 | kmem_cache_destroy(cifs_inode_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } |
| 971 | |
| 972 | static int |
| 973 | cifs_init_request_bufs(void) |
| 974 | { |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 975 | if (CIFSMaxBufSize < 8192) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
| 977 | Unicode path name has to fit in any SMB/CIFS path based frames */ |
| 978 | CIFSMaxBufSize = 8192; |
| 979 | } else if (CIFSMaxBufSize > 1024*127) { |
| 980 | CIFSMaxBufSize = 1024 * 127; |
| 981 | } else { |
| 982 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ |
| 983 | } |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 984 | /* cERROR(1, "CIFSMaxBufSize %d 0x%x",CIFSMaxBufSize,CIFSMaxBufSize); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | cifs_req_cachep = kmem_cache_create("cifs_request", |
| 986 | CIFSMaxBufSize + |
| 987 | MAX_CIFS_HDR_SIZE, 0, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 988 | SLAB_HWCACHE_ALIGN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | if (cifs_req_cachep == NULL) |
| 990 | return -ENOMEM; |
| 991 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 992 | if (cifs_min_rcv < 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | cifs_min_rcv = 1; |
| 994 | else if (cifs_min_rcv > 64) { |
| 995 | cifs_min_rcv = 64; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 996 | cERROR(1, "cifs_min_rcv set to maximum (64)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | } |
| 998 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 999 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
| 1000 | cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1002 | if (cifs_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | kmem_cache_destroy(cifs_req_cachep); |
| 1004 | return -ENOMEM; |
| 1005 | } |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 1006 | /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | almost all handle based requests (but not write response, nor is it |
| 1008 | sufficient for path based requests). A smaller size would have |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1009 | been more efficient (compacting multiple slab items on one 4k page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | for the case in which debug was on, but this larger size allows |
| 1011 | more SMBs to use small buffer alloc and is still much more |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1012 | efficient to alloc 1 per page off the slab compared to 17K (5page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | alloc of large cifs buffers even when page debugging is on */ |
| 1014 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1015 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1016 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | if (cifs_sm_req_cachep == NULL) { |
| 1018 | mempool_destroy(cifs_req_poolp); |
| 1019 | kmem_cache_destroy(cifs_req_cachep); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1020 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | } |
| 1022 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1023 | if (cifs_min_small < 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | cifs_min_small = 2; |
| 1025 | else if (cifs_min_small > 256) { |
| 1026 | cifs_min_small = 256; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1027 | cFYI(1, "cifs_min_small set to maximum (256)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | } |
| 1029 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1030 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
| 1031 | cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1033 | if (cifs_sm_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | mempool_destroy(cifs_req_poolp); |
| 1035 | kmem_cache_destroy(cifs_req_cachep); |
| 1036 | kmem_cache_destroy(cifs_sm_req_cachep); |
| 1037 | return -ENOMEM; |
| 1038 | } |
| 1039 | |
| 1040 | return 0; |
| 1041 | } |
| 1042 | |
| 1043 | static void |
| 1044 | cifs_destroy_request_bufs(void) |
| 1045 | { |
| 1046 | mempool_destroy(cifs_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1047 | kmem_cache_destroy(cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | mempool_destroy(cifs_sm_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1049 | kmem_cache_destroy(cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | static int |
| 1053 | cifs_init_mids(void) |
| 1054 | { |
| 1055 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 1056 | sizeof(struct mid_q_entry), 0, |
| 1057 | SLAB_HWCACHE_ALIGN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | if (cifs_mid_cachep == NULL) |
| 1059 | return -ENOMEM; |
| 1060 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1061 | /* 3 is a reasonable minimum number of simultaneous operations */ |
| 1062 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1063 | if (cifs_mid_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | kmem_cache_destroy(cifs_mid_cachep); |
| 1065 | return -ENOMEM; |
| 1066 | } |
| 1067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | return 0; |
| 1069 | } |
| 1070 | |
| 1071 | static void |
| 1072 | cifs_destroy_mids(void) |
| 1073 | { |
| 1074 | mempool_destroy(cifs_mid_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1075 | kmem_cache_destroy(cifs_mid_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | } |
| 1077 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | static int __init |
| 1079 | init_cifs(void) |
| 1080 | { |
| 1081 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | cifs_proc_init(); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1083 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1084 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
Steve French | 4ca9c19 | 2005-10-10 19:52:13 -0700 | [diff] [blame] | 1085 | INIT_LIST_HEAD(&GlobalDnotifyReqList); |
| 1086 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1087 | #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | /* |
| 1089 | * Initialize Global counters |
| 1090 | */ |
| 1091 | atomic_set(&sesInfoAllocCount, 0); |
| 1092 | atomic_set(&tconInfoAllocCount, 0); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1093 | atomic_set(&tcpSesAllocCount, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | atomic_set(&tcpSesReconnectCount, 0); |
| 1095 | atomic_set(&tconInfoReconnectCount, 0); |
| 1096 | |
| 1097 | atomic_set(&bufAllocCount, 0); |
Steve French | 4498eed5 | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 1098 | atomic_set(&smBufAllocCount, 0); |
| 1099 | #ifdef CONFIG_CIFS_STATS2 |
| 1100 | atomic_set(&totBufAllocCount, 0); |
| 1101 | atomic_set(&totSmBufAllocCount, 0); |
| 1102 | #endif /* CONFIG_CIFS_STATS2 */ |
| 1103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | atomic_set(&midCount, 0); |
| 1105 | GlobalCurrentXid = 0; |
| 1106 | GlobalTotalActiveXid = 0; |
| 1107 | GlobalMaxActiveXid = 0; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1108 | spin_lock_init(&cifs_tcp_ses_lock); |
Jeff Layton | 4477288 | 2010-10-15 15:34:03 -0400 | [diff] [blame] | 1109 | spin_lock_init(&cifs_file_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | spin_lock_init(&GlobalMid_Lock); |
| 1111 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1112 | if (cifs_max_pending < 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | cifs_max_pending = 2; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1114 | cFYI(1, "cifs_max_pending set to min of 2"); |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 1115 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
| 1116 | cifs_max_pending = CIFS_MAX_REQ; |
| 1117 | cFYI(1, "cifs_max_pending set to max of %u", CIFS_MAX_REQ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | } |
| 1119 | |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1120 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1121 | if (!cifsiod_wq) { |
| 1122 | rc = -ENOMEM; |
| 1123 | goto out_clean_proc; |
| 1124 | } |
| 1125 | |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1126 | rc = cifs_fscache_register(); |
| 1127 | if (rc) |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1128 | goto out_destroy_wq; |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | rc = cifs_init_inodecache(); |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1131 | if (rc) |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1132 | goto out_unreg_fscache; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1133 | |
| 1134 | rc = cifs_init_mids(); |
| 1135 | if (rc) |
| 1136 | goto out_destroy_inodecache; |
| 1137 | |
| 1138 | rc = cifs_init_request_bufs(); |
| 1139 | if (rc) |
| 1140 | goto out_destroy_mids; |
| 1141 | |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1142 | #ifdef CONFIG_CIFS_UPCALL |
| 1143 | rc = register_key_type(&cifs_spnego_key_type); |
| 1144 | if (rc) |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1145 | goto out_destroy_request_bufs; |
| 1146 | #endif /* CONFIG_CIFS_UPCALL */ |
| 1147 | |
| 1148 | #ifdef CONFIG_CIFS_ACL |
| 1149 | rc = init_cifs_idmap(); |
| 1150 | if (rc) |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1151 | goto out_register_key_type; |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1152 | #endif /* CONFIG_CIFS_ACL */ |
| 1153 | |
| 1154 | rc = register_filesystem(&cifs_fs_type); |
| 1155 | if (rc) |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1156 | goto out_init_cifs_idmap; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1157 | |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1158 | return 0; |
| 1159 | |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1160 | out_init_cifs_idmap: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1161 | #ifdef CONFIG_CIFS_ACL |
| 1162 | exit_cifs_idmap(); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1163 | out_register_key_type: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1164 | #endif |
| 1165 | #ifdef CONFIG_CIFS_UPCALL |
| 1166 | unregister_key_type(&cifs_spnego_key_type); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1167 | out_destroy_request_bufs: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1168 | #endif |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1169 | cifs_destroy_request_bufs(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1170 | out_destroy_mids: |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1171 | cifs_destroy_mids(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1172 | out_destroy_inodecache: |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1173 | cifs_destroy_inodecache(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1174 | out_unreg_fscache: |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1175 | cifs_fscache_unregister(); |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1176 | out_destroy_wq: |
| 1177 | destroy_workqueue(cifsiod_wq); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1178 | out_clean_proc: |
| 1179 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | return rc; |
| 1181 | } |
| 1182 | |
| 1183 | static void __exit |
| 1184 | exit_cifs(void) |
| 1185 | { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1186 | cFYI(DBG2, "exit_cifs"); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1187 | unregister_filesystem(&cifs_fs_type); |
Igor Mammedov | 78d31a3 | 2008-04-24 12:56:07 +0400 | [diff] [blame] | 1188 | cifs_dfs_release_automount_timer(); |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1189 | #ifdef CONFIG_CIFS_ACL |
| 1190 | cifs_destroy_idmaptrees(); |
| 1191 | exit_cifs_idmap(); |
| 1192 | #endif |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1193 | #ifdef CONFIG_CIFS_UPCALL |
| 1194 | unregister_key_type(&cifs_spnego_key_type); |
| 1195 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | cifs_destroy_request_bufs(); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1197 | cifs_destroy_mids(); |
| 1198 | cifs_destroy_inodecache(); |
| 1199 | cifs_fscache_unregister(); |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1200 | destroy_workqueue(cifsiod_wq); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1201 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1205 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | MODULE_DESCRIPTION |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1207 | ("VFS to access servers complying with the SNIA CIFS Specification " |
| 1208 | "e.g. Samba and Windows"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | MODULE_VERSION(CIFS_VERSION); |
| 1210 | module_init(init_cifs) |
| 1211 | module_exit(exit_cifs) |