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> |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 39 | #include <linux/random.h> |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 40 | #include <net/ipv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "cifsfs.h" |
| 42 | #include "cifspdu.h" |
| 43 | #define DECLARE_GLOBALS_HERE |
| 44 | #include "cifsglob.h" |
| 45 | #include "cifsproto.h" |
| 46 | #include "cifs_debug.h" |
| 47 | #include "cifs_fs_sb.h" |
| 48 | #include <linux/mm.h> |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 49 | #include <linux/key-type.h> |
Jeff Layton | e545937 | 2007-11-03 05:11:06 +0000 | [diff] [blame] | 50 | #include "cifs_spnego.h" |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 51 | #include "fscache.h" |
Pavel Shilovsky | 3792c17 | 2012-01-12 22:40:50 +0400 | [diff] [blame] | 52 | #ifdef CONFIG_CIFS_SMB2 |
| 53 | #include "smb2pdu.h" |
| 54 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | int cifsFYI = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | int traceSMB = 0; |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 58 | bool enable_oplocks = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | unsigned int linuxExtEnabled = 1; |
| 60 | unsigned int lookupCacheEnabled = 1; |
Jeff Layton | 04912d6 | 2010-04-24 07:57:45 -0400 | [diff] [blame] | 61 | unsigned int global_secflags = CIFSSEC_DEF; |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 62 | /* unsigned int ntlmv2_support = 0; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | unsigned int sign_CIFS_PDUs = 1; |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 64 | static const struct super_operations cifs_super_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 66 | module_param(CIFSMaxBufSize, uint, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 67 | MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header). " |
| 68 | "Default: 16384 Range: 8192 to 130048"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL; |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 70 | module_param(cifs_min_rcv, uint, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 71 | MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: " |
| 72 | "1 to 64"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | unsigned int cifs_min_small = 30; |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 74 | module_param(cifs_min_small, uint, 0); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 75 | MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 " |
| 76 | "Range: 2 to 256"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | unsigned int cifs_max_pending = CIFS_MAX_REQ; |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 78 | module_param(cifs_max_pending, uint, 0444); |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 79 | MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. " |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 80 | "Default: 32767 Range: 2 to 32767."); |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 81 | module_param(enable_oplocks, bool, 0644); |
Jeff Layton | 60654ce | 2012-11-25 08:00:34 -0500 | [diff] [blame] | 82 | MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1"); |
Steve French | e750473 | 2011-10-12 17:47:03 -0500 | [diff] [blame] | 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 | |
Mateusz Guzik | 24261fc | 2013-03-08 16:30:03 +0100 | [diff] [blame] | 90 | /* |
| 91 | * Bumps refcount for cifs super block. |
| 92 | * Note that it should be only called if a referece to VFS super block is |
| 93 | * already held, e.g. in open-type syscalls context. Otherwise it can race with |
| 94 | * atomic_dec_and_test in deactivate_locked_super. |
| 95 | */ |
| 96 | void |
| 97 | cifs_sb_active(struct super_block *sb) |
| 98 | { |
| 99 | struct cifs_sb_info *server = CIFS_SB(sb); |
| 100 | |
| 101 | if (atomic_inc_return(&server->active) == 1) |
| 102 | atomic_inc(&sb->s_active); |
| 103 | } |
| 104 | |
| 105 | void |
| 106 | cifs_sb_deactive(struct super_block *sb) |
| 107 | { |
| 108 | struct cifs_sb_info *server = CIFS_SB(sb); |
| 109 | |
| 110 | if (atomic_dec_and_test(&server->active)) |
| 111 | deactivate_super(sb); |
| 112 | } |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | static int |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 115 | cifs_read_super(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | { |
| 117 | struct inode *inode; |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 118 | struct cifs_sb_info *cifs_sb; |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 119 | struct cifs_tcon *tcon; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | int rc = 0; |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 121 | |
Pavel Shilovsky | b2e5cd3 | 2011-05-25 13:35:34 +0400 | [diff] [blame] | 122 | cifs_sb = CIFS_SB(sb); |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 123 | tcon = cifs_sb_master_tcon(cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 125 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL) |
| 126 | sb->s_flags |= MS_POSIXACL; |
| 127 | |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 128 | if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files) |
Al Viro | 2c6292a | 2011-06-17 09:05:48 -0400 | [diff] [blame] | 129 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 130 | else |
| 131 | sb->s_maxbytes = MAX_NON_LFS; |
| 132 | |
| 133 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
| 134 | sb->s_time_gran = 100; |
| 135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | sb->s_magic = CIFS_MAGIC_NUMBER; |
| 137 | sb->s_op = &cifs_super_ops; |
Jens Axboe | 8044f7f | 2010-04-22 12:09:48 +0200 | [diff] [blame] | 138 | sb->s_bdi = &cifs_sb->bdi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | sb->s_blocksize = CIFS_MAX_MSGSIZE; |
| 140 | sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */ |
Shirish Pargaonkar | 9b6763e | 2011-02-21 23:56:59 -0600 | [diff] [blame] | 141 | inode = cifs_root_iget(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 143 | if (IS_ERR(inode)) { |
| 144 | rc = PTR_ERR(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | goto out_no_root; |
| 146 | } |
| 147 | |
Jan Klos | 2f6c947 | 2013-10-06 21:08:20 +0200 | [diff] [blame] | 148 | if (tcon->nocase) |
Jeff Layton | 66ffd11 | 2013-07-30 11:38:44 -0400 | [diff] [blame] | 149 | sb->s_d_op = &cifs_ci_dentry_ops; |
| 150 | else |
| 151 | sb->s_d_op = &cifs_dentry_ops; |
| 152 | |
Al Viro | 48fde70 | 2012-01-08 22:15:13 -0500 | [diff] [blame] | 153 | sb->s_root = d_make_root(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | if (!sb->s_root) { |
| 155 | rc = -ENOMEM; |
| 156 | goto out_no_root; |
| 157 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 158 | |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 159 | #ifdef CONFIG_CIFS_NFSD_EXPORT |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 160 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 161 | cifs_dbg(FYI, "export ops supported\n"); |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 162 | sb->s_export_op = &cifs_export_ops; |
| 163 | } |
Paul Bolle | f3a6a60 | 2011-10-12 14:14:04 +0200 | [diff] [blame] | 164 | #endif /* CONFIG_CIFS_NFSD_EXPORT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | return 0; |
| 167 | |
| 168 | out_no_root: |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 169 | cifs_dbg(VFS, "%s: get root inode failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | return rc; |
| 171 | } |
| 172 | |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 173 | static void cifs_kill_sb(struct super_block *sb) |
| 174 | { |
| 175 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 176 | kill_anon_super(sb); |
Al Viro | 98ab494 | 2011-06-17 09:32:10 -0400 | [diff] [blame] | 177 | cifs_umount(cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | static int |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 181 | cifs_statfs(struct dentry *dentry, struct kstatfs *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 183 | struct super_block *sb = dentry->d_sb; |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 184 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 185 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 186 | struct TCP_Server_Info *server = tcon->ses->server; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 187 | unsigned int xid; |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 188 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 190 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 192 | /* |
| 193 | * PATH_MAX may be too long - it would presumably be total path, |
| 194 | * but note that some servers (includinng Samba 3) have a shorter |
| 195 | * maximum path. |
| 196 | * |
| 197 | * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. |
| 198 | */ |
| 199 | buf->f_namelen = PATH_MAX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | buf->f_files = 0; /* undefined */ |
| 201 | buf->f_ffree = 0; /* unlimited */ |
| 202 | |
Pavel Shilovsky | 76ec5e3 | 2012-09-18 16:20:33 -0700 | [diff] [blame] | 203 | if (server->ops->queryfs) |
| 204 | rc = server->ops->queryfs(xid, tcon, buf); |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 205 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 206 | free_xid(xid); |
Steve French | 39da984 | 2008-04-28 04:04:34 +0000 | [diff] [blame] | 207 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | } |
| 209 | |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 210 | static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len) |
| 211 | { |
Al Viro | 7119e22 | 2014-10-22 00:25:12 -0400 | [diff] [blame] | 212 | struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 213 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
| 214 | struct TCP_Server_Info *server = tcon->ses->server; |
| 215 | |
| 216 | if (server->ops->fallocate) |
| 217 | return server->ops->fallocate(file, tcon, mode, off, len); |
| 218 | |
| 219 | return -EOPNOTSUPP; |
| 220 | } |
| 221 | |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 222 | static int cifs_permission(struct inode *inode, int mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
| 224 | struct cifs_sb_info *cifs_sb; |
| 225 | |
| 226 | cifs_sb = CIFS_SB(inode->i_sb); |
| 227 | |
Miklos Szeredi | f696a36 | 2008-07-31 13:41:58 +0200 | [diff] [blame] | 228 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) { |
| 229 | if ((mask & MAY_EXEC) && !execute_ok(inode)) |
| 230 | return -EACCES; |
| 231 | else |
| 232 | return 0; |
| 233 | } else /* file mode might have been restricted at mount time |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 234 | on the client (above and beyond ACL on servers) for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | servers which do not support setting and viewing mode bits, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 236 | so allowing client to check permissions is useful */ |
Al Viro | 2830ba7 | 2011-06-20 19:16:29 -0400 | [diff] [blame] | 237 | return generic_permission(inode, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | } |
| 239 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 240 | static struct kmem_cache *cifs_inode_cachep; |
| 241 | static struct kmem_cache *cifs_req_cachep; |
| 242 | static struct kmem_cache *cifs_mid_cachep; |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 243 | static struct kmem_cache *cifs_sm_req_cachep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | mempool_t *cifs_sm_req_poolp; |
| 245 | mempool_t *cifs_req_poolp; |
| 246 | mempool_t *cifs_mid_poolp; |
| 247 | |
| 248 | static struct inode * |
| 249 | cifs_alloc_inode(struct super_block *sb) |
| 250 | { |
| 251 | struct cifsInodeInfo *cifs_inode; |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 252 | cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | if (!cifs_inode) |
| 254 | return NULL; |
| 255 | cifs_inode->cifsAttrs = 0x20; /* default */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | cifs_inode->time = 0; |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 257 | /* |
| 258 | * Until the file is open and we have gotten oplock info back from the |
| 259 | * server, can not assume caching of file data or metadata. |
| 260 | */ |
Pavel Shilovsky | c672362 | 2010-11-03 10:58:57 +0300 | [diff] [blame] | 261 | cifs_set_oplock_level(cifs_inode, 0); |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 262 | cifs_inode->flags = 0; |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 263 | spin_lock_init(&cifs_inode->writers_lock); |
| 264 | cifs_inode->writers = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ |
Jeff Layton | fbec9ab | 2009-04-03 13:44:00 -0400 | [diff] [blame] | 266 | cifs_inode->server_eof = 0; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 267 | cifs_inode->uniqueid = 0; |
| 268 | cifs_inode->createtime = 0; |
Pavel Shilovsky | 42873b0 | 2013-09-05 21:30:16 +0400 | [diff] [blame] | 269 | cifs_inode->epoch = 0; |
Pavel Shilovsky | b8c32db | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 270 | #ifdef CONFIG_CIFS_SMB2 |
| 271 | get_random_bytes(cifs_inode->lease_key, SMB2_LEASE_KEY_SIZE); |
| 272 | #endif |
| 273 | /* |
| 274 | * Can not set i_flags here - they get immediately overwritten to zero |
| 275 | * by the VFS. |
| 276 | */ |
| 277 | /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | INIT_LIST_HEAD(&cifs_inode->openFileList); |
Pavel Shilovsky | f45d341 | 2012-09-19 06:22:43 -0700 | [diff] [blame] | 279 | INIT_LIST_HEAD(&cifs_inode->llist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | return &cifs_inode->vfs_inode; |
| 281 | } |
| 282 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 283 | static void cifs_i_callback(struct rcu_head *head) |
| 284 | { |
| 285 | struct inode *inode = container_of(head, struct inode, i_rcu); |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 286 | kmem_cache_free(cifs_inode_cachep, CIFS_I(inode)); |
| 287 | } |
| 288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | static void |
| 290 | cifs_destroy_inode(struct inode *inode) |
| 291 | { |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 292 | call_rcu(&inode->i_rcu, cifs_i_callback); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | } |
| 294 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 295 | static void |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 296 | cifs_evict_inode(struct inode *inode) |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 297 | { |
Johannes Weiner | 91b0abe | 2014-04-03 14:47:49 -0700 | [diff] [blame] | 298 | truncate_inode_pages_final(&inode->i_data); |
Jan Kara | dbd5768 | 2012-05-03 14:48:02 +0200 | [diff] [blame] | 299 | clear_inode(inode); |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 300 | cifs_fscache_release_inode_cookie(inode); |
| 301 | } |
| 302 | |
| 303 | static void |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 304 | cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server) |
| 305 | { |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 306 | struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr; |
| 307 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr; |
| 308 | |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 309 | seq_puts(s, ",addr="); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 310 | |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 311 | switch (server->dstaddr.ss_family) { |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 312 | case AF_INET: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 313 | seq_printf(s, "%pI4", &sa->sin_addr.s_addr); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 314 | break; |
| 315 | case AF_INET6: |
Pavel Shilovsky | a9f1b85 | 2010-12-13 19:08:35 +0300 | [diff] [blame] | 316 | seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr); |
| 317 | if (sa6->sin6_scope_id) |
| 318 | seq_printf(s, "%%%u", sa6->sin6_scope_id); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 319 | break; |
| 320 | default: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 321 | seq_puts(s, "(unknown)"); |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 322 | } |
| 323 | } |
| 324 | |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 325 | static void |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 326 | cifs_show_security(struct seq_file *s, struct cifs_ses *ses) |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 327 | { |
Steve French | eda2116 | 2015-09-11 19:24:19 -0500 | [diff] [blame] | 328 | if (ses->sectype == Unspecified) { |
| 329 | if (ses->user_name == NULL) |
| 330 | seq_puts(s, ",sec=none"); |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 331 | return; |
Steve French | eda2116 | 2015-09-11 19:24:19 -0500 | [diff] [blame] | 332 | } |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 333 | |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 334 | seq_puts(s, ",sec="); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 335 | |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 336 | switch (ses->sectype) { |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 337 | case LANMAN: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 338 | seq_puts(s, "lanman"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 339 | break; |
| 340 | case NTLMv2: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 341 | seq_puts(s, "ntlmv2"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 342 | break; |
| 343 | case NTLM: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 344 | seq_puts(s, "ntlm"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 345 | break; |
| 346 | case Kerberos: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 347 | seq_puts(s, "krb5"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 348 | break; |
| 349 | case RawNTLMSSP: |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 350 | seq_puts(s, "ntlmssp"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 351 | break; |
| 352 | default: |
| 353 | /* shouldn't ever happen */ |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 354 | seq_puts(s, "unknown"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 355 | break; |
| 356 | } |
| 357 | |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 358 | if (ses->sign) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 359 | seq_puts(s, "i"); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 360 | } |
| 361 | |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 362 | static void |
| 363 | cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb) |
| 364 | { |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 365 | seq_puts(s, ",cache="); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 366 | |
| 367 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 368 | seq_puts(s, "strict"); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 369 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 370 | seq_puts(s, "none"); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 371 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 372 | seq_puts(s, "loose"); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 373 | } |
| 374 | |
Jeff Layton | 3ae35cd | 2013-07-30 13:34:40 -0400 | [diff] [blame] | 375 | static void |
| 376 | cifs_show_nls(struct seq_file *s, struct nls_table *cur) |
| 377 | { |
| 378 | struct nls_table *def; |
| 379 | |
| 380 | /* Display iocharset= option if it's not default charset */ |
| 381 | def = load_nls_default(); |
| 382 | if (def != cur) |
| 383 | seq_printf(s, ",iocharset=%s", cur->charset); |
| 384 | unload_nls(def); |
| 385 | } |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | /* |
| 388 | * cifs_show_options() is for displaying mount options in /proc/mounts. |
| 389 | * Not all settable options are displayed but most of the important |
| 390 | * ones are. |
| 391 | */ |
| 392 | static int |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 393 | cifs_show_options(struct seq_file *s, struct dentry *root) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | { |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 395 | struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 396 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 397 | struct sockaddr *srcaddr; |
| 398 | srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 400 | seq_show_option(s, "vers", tcon->ses->server->vals->version_string); |
Jeff Layton | 28e11bd | 2013-05-26 07:01:00 -0400 | [diff] [blame] | 401 | cifs_show_security(s, tcon->ses); |
Jeff Layton | d06b505 | 2012-05-16 07:53:01 -0400 | [diff] [blame] | 402 | cifs_show_cache_flavor(s, cifs_sb); |
Jeff Layton | 3e71551 | 2011-06-13 11:50:41 -0400 | [diff] [blame] | 403 | |
Jeff Layton | 29e07c8 | 2010-09-29 19:51:12 -0400 | [diff] [blame] | 404 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 405 | seq_puts(s, ",multiuser"); |
Steve French | 8727c8a | 2011-02-25 01:11:56 -0600 | [diff] [blame] | 406 | else if (tcon->ses->user_name) |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 407 | seq_show_option(s, "username", tcon->ses->user_name); |
Jeff Layton | 29e07c8 | 2010-09-29 19:51:12 -0400 | [diff] [blame] | 408 | |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 409 | if (tcon->ses->domainName) |
Kees Cook | a068acf | 2015-09-04 15:44:57 -0700 | [diff] [blame] | 410 | seq_show_option(s, "domain", tcon->ses->domainName); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 411 | |
Ben Greear | 3eb9a88 | 2010-09-01 17:06:02 -0700 | [diff] [blame] | 412 | if (srcaddr->sa_family != AF_UNSPEC) { |
| 413 | struct sockaddr_in *saddr4; |
| 414 | struct sockaddr_in6 *saddr6; |
| 415 | saddr4 = (struct sockaddr_in *)srcaddr; |
| 416 | saddr6 = (struct sockaddr_in6 *)srcaddr; |
| 417 | if (srcaddr->sa_family == AF_INET6) |
| 418 | seq_printf(s, ",srcaddr=%pI6c", |
| 419 | &saddr6->sin6_addr); |
| 420 | else if (srcaddr->sa_family == AF_INET) |
| 421 | seq_printf(s, ",srcaddr=%pI4", |
| 422 | &saddr4->sin_addr.s_addr); |
| 423 | else |
| 424 | seq_printf(s, ",srcaddr=BAD-AF:%i", |
| 425 | (int)(srcaddr->sa_family)); |
| 426 | } |
| 427 | |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 428 | seq_printf(s, ",uid=%u", |
| 429 | from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid)); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 430 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 431 | seq_puts(s, ",forceuid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 432 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 433 | seq_puts(s, ",noforceuid"); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 434 | |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 435 | seq_printf(s, ",gid=%u", |
| 436 | from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid)); |
Jeff Layton | 340481a3 | 2009-06-11 10:27:29 -0400 | [diff] [blame] | 437 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 438 | seq_puts(s, ",forcegid"); |
Jeff Layton | 4486d6e | 2009-08-03 12:45:10 -0400 | [diff] [blame] | 439 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 440 | seq_puts(s, ",noforcegid"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 441 | |
Jeff Layton | 61f98ff | 2009-06-11 10:27:32 -0400 | [diff] [blame] | 442 | cifs_show_address(s, tcon->ses->server); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 443 | |
| 444 | if (!tcon->unix_ext) |
Al Viro | 5206efd | 2011-07-26 03:22:14 -0400 | [diff] [blame] | 445 | seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho", |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 446 | cifs_sb->mnt_file_mode, |
| 447 | cifs_sb->mnt_dir_mode); |
Jeff Layton | 3ae35cd | 2013-07-30 13:34:40 -0400 | [diff] [blame] | 448 | |
| 449 | cifs_show_nls(s, cifs_sb->local_nls); |
| 450 | |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 451 | if (tcon->seal) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 452 | seq_puts(s, ",seal"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 453 | if (tcon->nocase) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 454 | seq_puts(s, ",nocase"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 455 | if (tcon->retry) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 456 | seq_puts(s, ",hard"); |
Steve French | f16dfa7 | 2015-09-30 21:07:59 -0500 | [diff] [blame] | 457 | if (tcon->use_persistent) |
| 458 | seq_puts(s, ",persistenthandles"); |
Steve French | 592fafe | 2015-11-03 10:08:53 -0600 | [diff] [blame] | 459 | else if (tcon->use_resilient) |
| 460 | seq_puts(s, ",resilienthandles"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 461 | if (tcon->unix_ext) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 462 | seq_puts(s, ",unix"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 463 | else |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 464 | seq_puts(s, ",nounix"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 465 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 466 | seq_puts(s, ",posixpaths"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 467 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 468 | seq_puts(s, ",setuids"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 469 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 470 | seq_puts(s, ",serverino"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 471 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 472 | seq_puts(s, ",rwpidforward"); |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 473 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 474 | seq_puts(s, ",forcemand"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 475 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 476 | seq_puts(s, ",nouser_xattr"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 477 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 478 | seq_puts(s, ",mapchars"); |
Nakajima Akira | bc8ebdc4 | 2015-02-13 15:35:58 +0900 | [diff] [blame] | 479 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR) |
| 480 | seq_puts(s, ",mapposix"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 481 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 482 | seq_puts(s, ",sfu"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 483 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 484 | seq_puts(s, ",nobrl"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 485 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 486 | seq_puts(s, ",cifsacl"); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 487 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 488 | seq_puts(s, ",dynperm"); |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 489 | if (root->d_sb->s_flags & MS_POSIXACL) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 490 | seq_puts(s, ",acl"); |
Stefan Metzmacher | 736a332 | 2010-07-30 14:56:00 +0200 | [diff] [blame] | 491 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 492 | seq_puts(s, ",mfsymlinks"); |
Suresh Jayaraman | 476428f | 2010-11-24 17:49:07 +0530 | [diff] [blame] | 493 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 494 | seq_puts(s, ",fsc"); |
Steve French | 71c424b | 2011-10-19 20:44:48 -0500 | [diff] [blame] | 495 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 496 | seq_puts(s, ",nostrictsync"); |
Steve French | 71c424b | 2011-10-19 20:44:48 -0500 | [diff] [blame] | 497 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
Fabian Frederick | 571d597 | 2014-05-13 18:04:17 +0200 | [diff] [blame] | 498 | seq_puts(s, ",noperm"); |
Sachin Prabhu | 3c7c87f | 2012-04-24 15:28:14 +0100 | [diff] [blame] | 499 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 500 | seq_printf(s, ",backupuid=%u", |
| 501 | from_kuid_munged(&init_user_ns, |
| 502 | cifs_sb->mnt_backupuid)); |
Sachin Prabhu | 3c7c87f | 2012-04-24 15:28:14 +0100 | [diff] [blame] | 503 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) |
Eric W. Biederman | 1f68233 | 2013-02-06 01:20:20 -0800 | [diff] [blame] | 504 | seq_printf(s, ",backupgid=%u", |
| 505 | from_kgid_munged(&init_user_ns, |
| 506 | cifs_sb->mnt_backupgid)); |
Steve French | 2b280fa | 2008-05-17 03:12:45 +0000 | [diff] [blame] | 507 | |
Sachin Prabhu | 28f8881 | 2012-04-24 15:28:30 +0100 | [diff] [blame] | 508 | seq_printf(s, ",rsize=%u", cifs_sb->rsize); |
| 509 | seq_printf(s, ",wsize=%u", cifs_sb->wsize); |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 510 | /* convert actimeo and display it in seconds */ |
Sachin Prabhu | 156d179 | 2012-04-25 12:10:14 +0100 | [diff] [blame] | 511 | seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); |
Jeff Layton | 8616e0f | 2009-06-11 10:27:28 -0400 | [diff] [blame] | 512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return 0; |
| 514 | } |
| 515 | |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 516 | static void cifs_umount_begin(struct super_block *sb) |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 517 | { |
Al Viro | 42faad9 | 2008-04-24 07:21:56 -0400 | [diff] [blame] | 518 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 519 | struct cifs_tcon *tcon; |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 520 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 521 | if (cifs_sb == NULL) |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 522 | return; |
| 523 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 524 | tcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | f1987b4 | 2008-11-15 11:12:47 -0500 | [diff] [blame] | 525 | |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 526 | spin_lock(&cifs_tcp_ses_lock); |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 527 | if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) { |
| 528 | /* we have other mounts to same share or we have |
| 529 | already tried to force umount this and woken up |
| 530 | all waiting network requests, nothing to do */ |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 531 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | ad8034f | 2009-06-26 03:25:49 +0000 | [diff] [blame] | 532 | return; |
| 533 | } else if (tcon->tc_count == 1) |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 534 | tcon->tidStatus = CifsExiting; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 535 | spin_unlock(&cifs_tcp_ses_lock); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 536 | |
Steve French | 3a5ff61 | 2006-07-14 22:37:11 +0000 | [diff] [blame] | 537 | /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */ |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 538 | /* cancel_notify_requests(tcon); */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 539 | if (tcon->ses && tcon->ses->server) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 540 | cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n"); |
Steve French | 9e2e85f | 2005-10-10 14:28:38 -0700 | [diff] [blame] | 541 | wake_up_all(&tcon->ses->server->request_q); |
Steve French | 6ab16d2 | 2005-11-29 20:55:11 -0800 | [diff] [blame] | 542 | wake_up_all(&tcon->ses->server->response_q); |
| 543 | msleep(1); /* yield */ |
| 544 | /* we have to kick the requests once more */ |
| 545 | wake_up_all(&tcon->ses->server->response_q); |
| 546 | msleep(1); |
Steve French | 5e1253b | 2005-10-10 14:06:37 -0700 | [diff] [blame] | 547 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 548 | |
| 549 | return; |
| 550 | } |
Steve French | 68058e7 | 2005-10-10 10:34:22 -0700 | [diff] [blame] | 551 | |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 552 | #ifdef CONFIG_CIFS_STATS2 |
Al Viro | 6413237 | 2011-12-08 20:51:13 -0500 | [diff] [blame] | 553 | static int cifs_show_stats(struct seq_file *s, struct dentry *root) |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 554 | { |
| 555 | /* BB FIXME */ |
| 556 | return 0; |
| 557 | } |
| 558 | #endif |
| 559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | static int cifs_remount(struct super_block *sb, int *flags, char *data) |
| 561 | { |
Theodore Ts'o | 02b9984 | 2014-03-13 10:14:33 -0400 | [diff] [blame] | 562 | sync_filesystem(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | *flags |= MS_NODIRATIME; |
| 564 | return 0; |
| 565 | } |
| 566 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 567 | static int cifs_drop_inode(struct inode *inode) |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 568 | { |
| 569 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 570 | |
Al Viro | 45321ac | 2010-06-07 13:43:19 -0400 | [diff] [blame] | 571 | /* no serverino => unconditional eviction */ |
| 572 | return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) || |
| 573 | generic_drop_inode(inode); |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 574 | } |
| 575 | |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 576 | static const struct super_operations cifs_super_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | .statfs = cifs_statfs, |
| 578 | .alloc_inode = cifs_alloc_inode, |
| 579 | .destroy_inode = cifs_destroy_inode, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 580 | .drop_inode = cifs_drop_inode, |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 581 | .evict_inode = cifs_evict_inode, |
Jeff Layton | 12420ac | 2010-06-01 14:47:40 -0400 | [diff] [blame] | 582 | /* .delete_inode = cifs_delete_inode, */ /* Do not need above |
| 583 | function unless later we add lazy close of inodes or unless the |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 584 | kernel forgets to call us with the same number of releases (closes) |
| 585 | as opens */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | .show_options = cifs_show_options, |
Steve French | 7b7abfe | 2005-11-09 15:21:09 -0800 | [diff] [blame] | 587 | .umount_begin = cifs_umount_begin, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | .remount_fs = cifs_remount, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 589 | #ifdef CONFIG_CIFS_STATS2 |
Steve French | f46d3e1 | 2006-09-30 01:08:55 +0000 | [diff] [blame] | 590 | .show_stats = cifs_show_stats, |
Steve French | bf97d28 | 2006-09-28 21:34:06 +0000 | [diff] [blame] | 591 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | }; |
| 593 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 594 | /* |
| 595 | * Get root dentry from superblock according to prefix path mount option. |
| 596 | * Return dentry with refcount + 1 on success and NULL otherwise. |
| 597 | */ |
| 598 | static struct dentry * |
| 599 | cifs_get_root(struct smb_vol *vol, struct super_block *sb) |
| 600 | { |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 601 | struct dentry *dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 602 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 603 | char *full_path = NULL; |
| 604 | char *s, *p; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 605 | char sep; |
| 606 | |
Steve French | 6d3ea7e | 2012-11-28 22:34:41 -0600 | [diff] [blame] | 607 | full_path = cifs_build_path_to_root(vol, cifs_sb, |
| 608 | cifs_sb_master_tcon(cifs_sb)); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 609 | if (full_path == NULL) |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 610 | return ERR_PTR(-ENOMEM); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 611 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 612 | cifs_dbg(FYI, "Get root dentry for %s\n", full_path); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 613 | |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 614 | sep = CIFS_DIR_SEP(cifs_sb); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 615 | dentry = dget(sb->s_root); |
| 616 | p = s = full_path; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 617 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 618 | do { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 619 | struct inode *dir = d_inode(dentry); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 620 | struct dentry *child; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 621 | |
Pavel Shilovsky | 5b980b0 | 2011-08-21 19:30:15 +0400 | [diff] [blame] | 622 | if (!dir) { |
| 623 | dput(dentry); |
| 624 | dentry = ERR_PTR(-ENOENT); |
| 625 | break; |
| 626 | } |
Jeff Layton | ce2ac52 | 2013-02-01 15:11:01 -0500 | [diff] [blame] | 627 | if (!S_ISDIR(dir->i_mode)) { |
| 628 | dput(dentry); |
| 629 | dentry = ERR_PTR(-ENOTDIR); |
| 630 | break; |
| 631 | } |
Pavel Shilovsky | 5b980b0 | 2011-08-21 19:30:15 +0400 | [diff] [blame] | 632 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 633 | /* skip separators */ |
| 634 | while (*s == sep) |
| 635 | s++; |
| 636 | if (!*s) |
| 637 | break; |
| 638 | p = s++; |
| 639 | /* next separator */ |
| 640 | while (*s && *s != sep) |
| 641 | s++; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 642 | |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 643 | mutex_lock(&dir->i_mutex); |
| 644 | child = lookup_one_len(p, dentry, s - p); |
| 645 | mutex_unlock(&dir->i_mutex); |
| 646 | dput(dentry); |
| 647 | dentry = child; |
| 648 | } while (!IS_ERR(dentry)); |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 649 | kfree(full_path); |
Al Viro | fec11dd | 2011-07-18 13:50:40 -0400 | [diff] [blame] | 650 | return dentry; |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 651 | } |
| 652 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 653 | static int cifs_set_super(struct super_block *sb, void *data) |
| 654 | { |
| 655 | struct cifs_mnt_data *mnt_data = data; |
| 656 | sb->s_fs_info = mnt_data->cifs_sb; |
| 657 | return set_anon_super(sb, NULL); |
| 658 | } |
| 659 | |
Al Viro | d753ed9 | 2010-07-26 12:52:33 +0400 | [diff] [blame] | 660 | static struct dentry * |
| 661 | cifs_do_mount(struct file_system_type *fs_type, |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 662 | int flags, const char *dev_name, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | { |
| 664 | int rc; |
Jan Blunck | db71922 | 2010-08-15 22:51:10 +0200 | [diff] [blame] | 665 | struct super_block *sb; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 666 | struct cifs_sb_info *cifs_sb; |
| 667 | struct smb_vol *volume_info; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 668 | struct cifs_mnt_data mnt_data; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 669 | struct dentry *root; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 671 | cifs_dbg(FYI, "Devname: %s flags: %d\n", dev_name, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
Jeff Layton | 04db79b | 2011-07-06 08:10:38 -0400 | [diff] [blame] | 673 | volume_info = cifs_get_volume_info((char *)data, dev_name); |
| 674 | if (IS_ERR(volume_info)) |
| 675 | return ERR_CAST(volume_info); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 676 | |
| 677 | cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL); |
| 678 | if (cifs_sb == NULL) { |
| 679 | root = ERR_PTR(-ENOMEM); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 680 | goto out_nls; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 681 | } |
| 682 | |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 683 | cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL); |
| 684 | if (cifs_sb->mountdata == NULL) { |
| 685 | root = ERR_PTR(-ENOMEM); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 686 | goto out_cifs_sb; |
Al Viro | 5d3bc60 | 2011-06-17 09:17:28 -0400 | [diff] [blame] | 687 | } |
| 688 | |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 689 | cifs_setup_cifs_sb(volume_info, cifs_sb); |
| 690 | |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 691 | rc = cifs_mount(cifs_sb, volume_info); |
| 692 | if (rc) { |
| 693 | if (!(flags & MS_SILENT)) |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 694 | cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n", |
| 695 | rc); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 696 | root = ERR_PTR(rc); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 697 | goto out_mountdata; |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 698 | } |
| 699 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 700 | mnt_data.vol = volume_info; |
| 701 | mnt_data.cifs_sb = cifs_sb; |
| 702 | mnt_data.flags = flags; |
| 703 | |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 704 | /* BB should we make this contingent on mount parm? */ |
| 705 | flags |= MS_NODIRATIME | MS_NOATIME; |
| 706 | |
| 707 | sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 708 | if (IS_ERR(sb)) { |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 709 | root = ERR_CAST(sb); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 710 | cifs_umount(cifs_sb); |
Al Viro | d757d71 | 2011-06-17 09:42:43 -0400 | [diff] [blame] | 711 | goto out; |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 712 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
Al Viro | ee01a14 | 2011-06-17 09:47:23 -0400 | [diff] [blame] | 714 | if (sb->s_root) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 715 | cifs_dbg(FYI, "Use existing superblock\n"); |
Al Viro | 97d1152 | 2011-06-17 09:29:57 -0400 | [diff] [blame] | 716 | cifs_umount(cifs_sb); |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 717 | } else { |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 718 | rc = cifs_read_super(sb); |
| 719 | if (rc) { |
| 720 | root = ERR_PTR(rc); |
| 721 | goto out_super; |
| 722 | } |
| 723 | |
| 724 | sb->s_flags |= MS_ACTIVE; |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 725 | } |
| 726 | |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 727 | root = cifs_get_root(volume_info, sb); |
Al Viro | 9403c9c | 2011-06-17 10:02:59 -0400 | [diff] [blame] | 728 | if (IS_ERR(root)) |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 729 | goto out_super; |
Al Viro | fa18f1b | 2011-06-17 09:50:44 -0400 | [diff] [blame] | 730 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 731 | cifs_dbg(FYI, "dentry root is: %p\n", root); |
Pavel Shilovsky | 25c7f41 | 2011-05-26 23:35:47 +0400 | [diff] [blame] | 732 | goto out; |
| 733 | |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 734 | out_super: |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 735 | deactivate_locked_super(sb); |
Pavel Shilovsky | 641a58d | 2011-05-26 00:02:16 +0400 | [diff] [blame] | 736 | out: |
Jeff Layton | f9e59bc | 2011-07-06 08:10:37 -0400 | [diff] [blame] | 737 | cifs_cleanup_volume_info(volume_info); |
Pavel Shilovsky | 724d9f1 | 2011-05-05 09:55:12 +0000 | [diff] [blame] | 738 | return root; |
Al Viro | 5c4f1ad | 2011-06-17 09:56:55 -0400 | [diff] [blame] | 739 | |
| 740 | out_mountdata: |
| 741 | kfree(cifs_sb->mountdata); |
| 742 | out_cifs_sb: |
| 743 | kfree(cifs_sb); |
| 744 | out_nls: |
| 745 | unload_nls(volume_info->local_nls); |
| 746 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } |
| 748 | |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 749 | static ssize_t |
| 750 | cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter) |
| 751 | { |
| 752 | ssize_t rc; |
| 753 | struct inode *inode = file_inode(iocb->ki_filp); |
| 754 | |
| 755 | rc = cifs_revalidate_mapping(inode); |
| 756 | if (rc) |
| 757 | return rc; |
| 758 | |
| 759 | return generic_file_read_iter(iocb, iter); |
| 760 | } |
| 761 | |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 762 | static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 763 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 764 | struct inode *inode = file_inode(iocb->ki_filp); |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 765 | struct cifsInodeInfo *cinode = CIFS_I(inode); |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 766 | ssize_t written; |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 767 | int rc; |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 768 | |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 769 | written = cifs_get_writer(cinode); |
| 770 | if (written) |
| 771 | return written; |
| 772 | |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 773 | written = generic_file_write_iter(iocb, from); |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 774 | |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 775 | if (CIFS_CACHE_WRITE(CIFS_I(inode))) |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 776 | goto out; |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 777 | |
| 778 | rc = filemap_fdatawrite(inode->i_mapping); |
| 779 | if (rc) |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 780 | cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n", |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 781 | rc, inode); |
Pavel Shilovsky | 72432ff | 2011-01-24 14:16:35 -0500 | [diff] [blame] | 782 | |
Sachin Prabhu | c11f1df | 2014-03-11 16:11:47 +0000 | [diff] [blame] | 783 | out: |
| 784 | cifs_put_writer(cinode); |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 785 | return written; |
| 786 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 788 | static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 789 | { |
Josef Bacik | 06222e4 | 2011-07-18 13:21:38 -0400 | [diff] [blame] | 790 | /* |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 791 | * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate |
Josef Bacik | 06222e4 | 2011-07-18 13:21:38 -0400 | [diff] [blame] | 792 | * the cached file length |
| 793 | */ |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 794 | if (whence != SEEK_SET && whence != SEEK_CUR) { |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 795 | int rc; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 796 | struct inode *inode = file_inode(file); |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 797 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 798 | /* |
| 799 | * We need to be sure that all dirty pages are written and the |
| 800 | * server has the newest file length. |
| 801 | */ |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 802 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 803 | inode->i_mapping->nrpages != 0) { |
| 804 | rc = filemap_fdatawait(inode->i_mapping); |
Steve French | 156ecb2 | 2011-05-20 17:00:01 +0000 | [diff] [blame] | 805 | if (rc) { |
| 806 | mapping_set_error(inode->i_mapping, rc); |
| 807 | return rc; |
| 808 | } |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 809 | } |
| 810 | /* |
| 811 | * Some applications poll for the file length in this strange |
| 812 | * way so we must seek to end on non-oplocked files by |
| 813 | * setting the revalidate time to zero. |
| 814 | */ |
| 815 | CIFS_I(inode)->time = 0; |
Steve French | 030e9d8 | 2007-02-01 04:27:59 +0000 | [diff] [blame] | 816 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 817 | rc = cifs_revalidate_file_attr(file); |
| 818 | if (rc < 0) |
| 819 | return (loff_t)rc; |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 820 | } |
Andrew Morton | 965c8e5 | 2012-12-17 15:59:39 -0800 | [diff] [blame] | 821 | return generic_file_llseek(file, offset, whence); |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 822 | } |
| 823 | |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 824 | static int |
| 825 | cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 826 | { |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 827 | /* |
| 828 | * Note that this is called by vfs setlease with i_lock held to |
| 829 | * protect *lease from going away. |
| 830 | */ |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 831 | struct inode *inode = file_inode(file); |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 832 | struct cifsFileInfo *cfile = file->private_data; |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 833 | |
| 834 | if (!(S_ISREG(inode->i_mode))) |
| 835 | return -EINVAL; |
| 836 | |
Jeff Layton | 0244080 | 2014-08-09 10:16:44 -0400 | [diff] [blame] | 837 | /* Check if file is oplocked if this is request for new lease */ |
| 838 | if (arg == F_UNLCK || |
| 839 | ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) || |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 840 | ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode)))) |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 841 | return generic_setlease(file, arg, lease, priv); |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 842 | else if (tlink_tcon(cfile->tlink)->local_lease && |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 843 | !CIFS_CACHE_READ(CIFS_I(inode))) |
| 844 | /* |
| 845 | * If the server claims to support oplock on this file, then we |
| 846 | * still need to check oplock even if the local_lease mount |
| 847 | * option is set, but there are servers which do not support |
| 848 | * oplock for which this mount option may be useful if the user |
| 849 | * knows that the file won't be changed on the server by anyone |
| 850 | * else. |
| 851 | */ |
Jeff Layton | e6f5c78 | 2014-08-22 10:40:25 -0400 | [diff] [blame] | 852 | return generic_setlease(file, arg, lease, priv); |
Christoph Hellwig | 51ee4b8 | 2010-10-31 08:35:10 -0400 | [diff] [blame] | 853 | else |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 854 | return -EAGAIN; |
| 855 | } |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 856 | |
Igor Mammedov | e6ab158 | 2008-01-11 01:49:48 +0000 | [diff] [blame] | 857 | struct file_system_type cifs_fs_type = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | .owner = THIS_MODULE, |
| 859 | .name = "cifs", |
Al Viro | d753ed9 | 2010-07-26 12:52:33 +0400 | [diff] [blame] | 860 | .mount = cifs_do_mount, |
Al Viro | 6d68617 | 2011-06-17 08:34:57 -0400 | [diff] [blame] | 861 | .kill_sb = cifs_kill_sb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | /* .fs_flags */ |
| 863 | }; |
Eric W. Biederman | 3e64fe5 | 2013-03-11 07:05:42 -0700 | [diff] [blame] | 864 | MODULE_ALIAS_FS("cifs"); |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 865 | const struct inode_operations cifs_dir_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | .create = cifs_create, |
Miklos Szeredi | d2c1271 | 2012-06-05 15:10:23 +0200 | [diff] [blame] | 867 | .atomic_open = cifs_atomic_open, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | .lookup = cifs_lookup, |
| 869 | .getattr = cifs_getattr, |
| 870 | .unlink = cifs_unlink, |
| 871 | .link = cifs_hardlink, |
| 872 | .mkdir = cifs_mkdir, |
| 873 | .rmdir = cifs_rmdir, |
Miklos Szeredi | 7c33d59 | 2014-07-23 15:15:36 +0200 | [diff] [blame] | 874 | .rename2 = cifs_rename2, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | .permission = cifs_permission, |
| 876 | /* revalidate:cifs_revalidate, */ |
| 877 | .setattr = cifs_setattr, |
| 878 | .symlink = cifs_symlink, |
| 879 | .mknod = cifs_mknod, |
| 880 | #ifdef CONFIG_CIFS_XATTR |
| 881 | .setxattr = cifs_setxattr, |
| 882 | .getxattr = cifs_getxattr, |
| 883 | .listxattr = cifs_listxattr, |
| 884 | .removexattr = cifs_removexattr, |
| 885 | #endif |
| 886 | }; |
| 887 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 888 | const struct inode_operations cifs_file_inode_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | /* revalidate:cifs_revalidate, */ |
| 890 | .setattr = cifs_setattr, |
| 891 | .getattr = cifs_getattr, /* do we need this anymore? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | .permission = cifs_permission, |
| 893 | #ifdef CONFIG_CIFS_XATTR |
| 894 | .setxattr = cifs_setxattr, |
| 895 | .getxattr = cifs_getxattr, |
| 896 | .listxattr = cifs_listxattr, |
| 897 | .removexattr = cifs_removexattr, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 898 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | }; |
| 900 | |
Arjan van de Ven | 754661f | 2007-02-12 00:55:38 -0800 | [diff] [blame] | 901 | const struct inode_operations cifs_symlink_inode_ops = { |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 902 | .readlink = generic_readlink, |
Al Viro | 6b25539 | 2015-11-17 10:20:54 -0500 | [diff] [blame] | 903 | .get_link = cifs_get_link, |
Al Viro | 87dc800 | 2013-09-16 10:30:04 -0400 | [diff] [blame] | 904 | .put_link = kfree_put_link, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | .permission = cifs_permission, |
| 906 | /* BB add the following two eventually */ |
| 907 | /* revalidate: cifs_revalidate, |
| 908 | setattr: cifs_notify_change, *//* BB do we need notify change */ |
| 909 | #ifdef CONFIG_CIFS_XATTR |
| 910 | .setxattr = cifs_setxattr, |
| 911 | .getxattr = cifs_getxattr, |
| 912 | .listxattr = cifs_listxattr, |
| 913 | .removexattr = cifs_removexattr, |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 914 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | }; |
| 916 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 917 | const struct file_operations cifs_file_ops = { |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 918 | .read_iter = cifs_loose_read_iter, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 919 | .write_iter = cifs_file_write_iter, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | .open = cifs_open, |
| 921 | .release = cifs_close, |
| 922 | .lock = cifs_lock, |
| 923 | .fsync = cifs_fsync, |
| 924 | .flush = cifs_flush, |
| 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 | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 927 | .llseek = cifs_llseek, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 928 | .unlocked_ioctl = cifs_ioctl, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 929 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 930 | .fallocate = cifs_fallocate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | }; |
| 932 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 933 | const struct file_operations cifs_file_strict_ops = { |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 934 | .read_iter = cifs_strict_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 935 | .write_iter = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 936 | .open = cifs_open, |
| 937 | .release = cifs_close, |
| 938 | .lock = cifs_lock, |
| 939 | .fsync = cifs_strict_fsync, |
| 940 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 941 | .mmap = cifs_file_strict_mmap, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 942 | .splice_read = generic_file_splice_read, |
| 943 | .llseek = cifs_llseek, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 944 | .unlocked_ioctl = cifs_ioctl, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 945 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 946 | .fallocate = cifs_fallocate, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 947 | }; |
| 948 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 949 | const struct file_operations cifs_file_direct_ops = { |
Pavel Shilovsky | 0b81c1c | 2011-03-10 10:11:05 +0300 | [diff] [blame] | 950 | /* BB reevaluate whether they can be done with directio, no cache */ |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 951 | .read_iter = cifs_user_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 952 | .write_iter = cifs_user_writev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | .open = cifs_open, |
| 954 | .release = cifs_close, |
| 955 | .lock = cifs_lock, |
| 956 | .fsync = cifs_fsync, |
| 957 | .flush = cifs_flush, |
Steve French | a994b8f | 2009-12-07 05:44:46 +0000 | [diff] [blame] | 958 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 959 | .splice_read = generic_file_splice_read, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 960 | .unlocked_ioctl = cifs_ioctl, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 961 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 962 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 963 | .fallocate = cifs_fallocate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | }; |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 965 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 966 | const struct file_operations cifs_file_nobrl_ops = { |
Jeff Layton | 08bc035 | 2014-05-23 06:50:21 -0400 | [diff] [blame] | 967 | .read_iter = cifs_loose_read_iter, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 968 | .write_iter = cifs_file_write_iter, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 969 | .open = cifs_open, |
| 970 | .release = cifs_close, |
| 971 | .fsync = cifs_fsync, |
| 972 | .flush = cifs_flush, |
| 973 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 974 | .splice_read = generic_file_splice_read, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 975 | .llseek = cifs_llseek, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 976 | .unlocked_ioctl = cifs_ioctl, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 977 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 978 | .fallocate = cifs_fallocate, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 979 | }; |
| 980 | |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 981 | const struct file_operations cifs_file_strict_nobrl_ops = { |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 982 | .read_iter = cifs_strict_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 983 | .write_iter = cifs_strict_writev, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 984 | .open = cifs_open, |
| 985 | .release = cifs_close, |
| 986 | .fsync = cifs_strict_fsync, |
| 987 | .flush = cifs_flush, |
Pavel Shilovsky | 7a6a19b | 2010-12-14 11:29:51 +0300 | [diff] [blame] | 988 | .mmap = cifs_file_strict_mmap, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 989 | .splice_read = generic_file_splice_read, |
| 990 | .llseek = cifs_llseek, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 991 | .unlocked_ioctl = cifs_ioctl, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 992 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 993 | .fallocate = cifs_fallocate, |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 994 | }; |
| 995 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 996 | const struct file_operations cifs_file_direct_nobrl_ops = { |
Pavel Shilovsky | 0b81c1c | 2011-03-10 10:11:05 +0300 | [diff] [blame] | 997 | /* BB reevaluate whether they can be done with directio, no cache */ |
Al Viro | e6a7bcb | 2014-04-02 19:53:36 -0400 | [diff] [blame] | 998 | .read_iter = cifs_user_readv, |
Al Viro | 3dae875 | 2014-04-03 12:05:17 -0400 | [diff] [blame] | 999 | .write_iter = cifs_user_writev, |
Steve French | 87c89dd | 2005-11-17 17:03:00 -0800 | [diff] [blame] | 1000 | .open = cifs_open, |
| 1001 | .release = cifs_close, |
| 1002 | .fsync = cifs_fsync, |
| 1003 | .flush = cifs_flush, |
Pavel Shilovsky | 810627a0 | 2010-03-27 02:00:49 +0000 | [diff] [blame] | 1004 | .mmap = cifs_file_mmap, |
Jens Axboe | 5ffc4ef | 2007-06-01 11:49:19 +0200 | [diff] [blame] | 1005 | .splice_read = generic_file_splice_read, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1006 | .unlocked_ioctl = cifs_ioctl, |
Steve French | c32a0b6 | 2006-01-12 14:41:28 -0800 | [diff] [blame] | 1007 | .llseek = cifs_llseek, |
Steve French | 84210e9 | 2008-10-23 04:42:37 +0000 | [diff] [blame] | 1008 | .setlease = cifs_setlease, |
Steve French | 31742c5 | 2014-08-17 08:38:47 -0500 | [diff] [blame] | 1009 | .fallocate = cifs_fallocate, |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 1010 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 1012 | const struct file_operations cifs_dir_ops = { |
Al Viro | be4ccdc | 2013-05-22 16:17:25 -0400 | [diff] [blame] | 1013 | .iterate = cifs_readdir, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | .release = cifs_closedir, |
| 1015 | .read = generic_read_dir, |
Steve French | f9ddcca | 2008-05-15 05:51:55 +0000 | [diff] [blame] | 1016 | .unlocked_ioctl = cifs_ioctl, |
Christoph Hellwig | 3222a3e | 2008-09-03 21:53:01 +0200 | [diff] [blame] | 1017 | .llseek = generic_file_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | }; |
| 1019 | |
| 1020 | static void |
Alexey Dobriyan | 51cc506 | 2008-07-25 19:45:34 -0700 | [diff] [blame] | 1021 | cifs_init_once(void *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | { |
| 1023 | struct cifsInodeInfo *cifsi = inode; |
| 1024 | |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 1025 | inode_init_once(&cifsi->vfs_inode); |
Pavel Shilovsky | 1b4b55a | 2012-09-19 06:22:44 -0700 | [diff] [blame] | 1026 | init_rwsem(&cifsi->lock_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | } |
| 1028 | |
Fabian Frederick | 9ee108b | 2014-04-03 14:46:30 -0700 | [diff] [blame] | 1029 | static int __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | cifs_init_inodecache(void) |
| 1031 | { |
| 1032 | cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 1033 | sizeof(struct cifsInodeInfo), |
Paul Jackson | fffb60f | 2006-03-24 03:16:06 -0800 | [diff] [blame] | 1034 | 0, (SLAB_RECLAIM_ACCOUNT| |
| 1035 | SLAB_MEM_SPREAD), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1036 | cifs_init_once); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | if (cifs_inode_cachep == NULL) |
| 1038 | return -ENOMEM; |
| 1039 | |
| 1040 | return 0; |
| 1041 | } |
| 1042 | |
| 1043 | static void |
| 1044 | cifs_destroy_inodecache(void) |
| 1045 | { |
Kirill A. Shutemov | 8c0a853 | 2012-09-26 11:33:07 +1000 | [diff] [blame] | 1046 | /* |
| 1047 | * Make sure all delayed rcu free inodes are flushed before we |
| 1048 | * destroy cache. |
| 1049 | */ |
| 1050 | rcu_barrier(); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1051 | kmem_cache_destroy(cifs_inode_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | static int |
| 1055 | cifs_init_request_bufs(void) |
| 1056 | { |
Pavel Shilovsky | 3792c17 | 2012-01-12 22:40:50 +0400 | [diff] [blame] | 1057 | size_t max_hdr_size = MAX_CIFS_HDR_SIZE; |
| 1058 | #ifdef CONFIG_CIFS_SMB2 |
| 1059 | /* |
| 1060 | * SMB2 maximum header size is bigger than CIFS one - no problems to |
| 1061 | * allocate some more bytes for CIFS. |
| 1062 | */ |
| 1063 | max_hdr_size = MAX_SMB2_HDR_SIZE; |
| 1064 | #endif |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1065 | if (CIFSMaxBufSize < 8192) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | /* Buffer size can not be smaller than 2 * PATH_MAX since maximum |
| 1067 | Unicode path name has to fit in any SMB/CIFS path based frames */ |
| 1068 | CIFSMaxBufSize = 8192; |
| 1069 | } else if (CIFSMaxBufSize > 1024*127) { |
| 1070 | CIFSMaxBufSize = 1024 * 127; |
| 1071 | } else { |
| 1072 | CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/ |
| 1073 | } |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1074 | /* |
| 1075 | cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n", |
| 1076 | CIFSMaxBufSize, CIFSMaxBufSize); |
| 1077 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | cifs_req_cachep = kmem_cache_create("cifs_request", |
Pavel Shilovsky | 3792c17 | 2012-01-12 22:40:50 +0400 | [diff] [blame] | 1079 | CIFSMaxBufSize + max_hdr_size, 0, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1080 | SLAB_HWCACHE_ALIGN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | if (cifs_req_cachep == NULL) |
| 1082 | return -ENOMEM; |
| 1083 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1084 | if (cifs_min_rcv < 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | cifs_min_rcv = 1; |
| 1086 | else if (cifs_min_rcv > 64) { |
| 1087 | cifs_min_rcv = 64; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1088 | cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | } |
| 1090 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1091 | cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv, |
| 1092 | cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1094 | if (cifs_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | kmem_cache_destroy(cifs_req_cachep); |
| 1096 | return -ENOMEM; |
| 1097 | } |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 1098 | /* 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] | 1099 | almost all handle based requests (but not write response, nor is it |
| 1100 | sufficient for path based requests). A smaller size would have |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1101 | been more efficient (compacting multiple slab items on one 4k page) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | for the case in which debug was on, but this larger size allows |
| 1103 | more SMBs to use small buffer alloc and is still much more |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1104 | 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] | 1105 | alloc of large cifs buffers even when page debugging is on */ |
| 1106 | cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq", |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1107 | MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1108 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | if (cifs_sm_req_cachep == NULL) { |
| 1110 | mempool_destroy(cifs_req_poolp); |
| 1111 | kmem_cache_destroy(cifs_req_cachep); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1112 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } |
| 1114 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1115 | if (cifs_min_small < 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | cifs_min_small = 2; |
| 1117 | else if (cifs_min_small > 256) { |
| 1118 | cifs_min_small = 256; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1119 | cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | } |
| 1121 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1122 | cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small, |
| 1123 | cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1125 | if (cifs_sm_req_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | mempool_destroy(cifs_req_poolp); |
| 1127 | kmem_cache_destroy(cifs_req_cachep); |
| 1128 | kmem_cache_destroy(cifs_sm_req_cachep); |
| 1129 | return -ENOMEM; |
| 1130 | } |
| 1131 | |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | static void |
| 1136 | cifs_destroy_request_bufs(void) |
| 1137 | { |
| 1138 | mempool_destroy(cifs_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1139 | kmem_cache_destroy(cifs_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | mempool_destroy(cifs_sm_req_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1141 | kmem_cache_destroy(cifs_sm_req_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | } |
| 1143 | |
| 1144 | static int |
| 1145 | cifs_init_mids(void) |
| 1146 | { |
| 1147 | cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids", |
Steve French | 26f5736 | 2007-08-30 22:09:15 +0000 | [diff] [blame] | 1148 | sizeof(struct mid_q_entry), 0, |
| 1149 | SLAB_HWCACHE_ALIGN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | if (cifs_mid_cachep == NULL) |
| 1151 | return -ENOMEM; |
| 1152 | |
Matthew Dobson | 93d2341 | 2006-03-26 01:37:50 -0800 | [diff] [blame] | 1153 | /* 3 is a reasonable minimum number of simultaneous operations */ |
| 1154 | cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1155 | if (cifs_mid_poolp == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | kmem_cache_destroy(cifs_mid_cachep); |
| 1157 | return -ENOMEM; |
| 1158 | } |
| 1159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | static void |
| 1164 | cifs_destroy_mids(void) |
| 1165 | { |
| 1166 | mempool_destroy(cifs_mid_poolp); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1167 | kmem_cache_destroy(cifs_mid_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | } |
| 1169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | static int __init |
| 1171 | init_cifs(void) |
| 1172 | { |
| 1173 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | cifs_proc_init(); |
Jeff Layton | e7ddee9 | 2008-11-14 13:44:38 -0500 | [diff] [blame] | 1175 | INIT_LIST_HEAD(&cifs_tcp_ses_list); |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1176 | #ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */ |
Steve French | 4ca9c19 | 2005-10-10 19:52:13 -0700 | [diff] [blame] | 1177 | INIT_LIST_HEAD(&GlobalDnotifyReqList); |
| 1178 | INIT_LIST_HEAD(&GlobalDnotifyRsp_Q); |
Steve French | 0eff0e2 | 2011-02-24 05:39:23 +0000 | [diff] [blame] | 1179 | #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] | 1180 | /* |
| 1181 | * Initialize Global counters |
| 1182 | */ |
| 1183 | atomic_set(&sesInfoAllocCount, 0); |
| 1184 | atomic_set(&tconInfoAllocCount, 0); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1185 | atomic_set(&tcpSesAllocCount, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | atomic_set(&tcpSesReconnectCount, 0); |
| 1187 | atomic_set(&tconInfoReconnectCount, 0); |
| 1188 | |
| 1189 | atomic_set(&bufAllocCount, 0); |
Steve French | 4498eed5 | 2005-12-03 13:58:57 -0800 | [diff] [blame] | 1190 | atomic_set(&smBufAllocCount, 0); |
| 1191 | #ifdef CONFIG_CIFS_STATS2 |
| 1192 | atomic_set(&totBufAllocCount, 0); |
| 1193 | atomic_set(&totSmBufAllocCount, 0); |
| 1194 | #endif /* CONFIG_CIFS_STATS2 */ |
| 1195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | atomic_set(&midCount, 0); |
| 1197 | GlobalCurrentXid = 0; |
| 1198 | GlobalTotalActiveXid = 0; |
| 1199 | GlobalMaxActiveXid = 0; |
Suresh Jayaraman | 3f9bcca | 2010-10-18 23:29:37 +0530 | [diff] [blame] | 1200 | spin_lock_init(&cifs_tcp_ses_lock); |
Jeff Layton | 4477288 | 2010-10-15 15:34:03 -0400 | [diff] [blame] | 1201 | spin_lock_init(&cifs_file_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | spin_lock_init(&GlobalMid_Lock); |
| 1203 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 1204 | if (cifs_max_pending < 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | cifs_max_pending = 2; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1206 | cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); |
Pavel Shilovsky | 10b9b98 | 2012-03-20 12:55:09 +0300 | [diff] [blame] | 1207 | } else if (cifs_max_pending > CIFS_MAX_REQ) { |
| 1208 | cifs_max_pending = CIFS_MAX_REQ; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1209 | cifs_dbg(FYI, "cifs_max_pending set to max of %u\n", |
| 1210 | CIFS_MAX_REQ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | } |
| 1212 | |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1213 | cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); |
| 1214 | if (!cifsiod_wq) { |
| 1215 | rc = -ENOMEM; |
| 1216 | goto out_clean_proc; |
| 1217 | } |
| 1218 | |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1219 | rc = cifs_fscache_register(); |
| 1220 | if (rc) |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1221 | goto out_destroy_wq; |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | rc = cifs_init_inodecache(); |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1224 | if (rc) |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1225 | goto out_unreg_fscache; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1226 | |
| 1227 | rc = cifs_init_mids(); |
| 1228 | if (rc) |
| 1229 | goto out_destroy_inodecache; |
| 1230 | |
| 1231 | rc = cifs_init_request_bufs(); |
| 1232 | if (rc) |
| 1233 | goto out_destroy_mids; |
| 1234 | |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1235 | #ifdef CONFIG_CIFS_UPCALL |
| 1236 | rc = register_key_type(&cifs_spnego_key_type); |
| 1237 | if (rc) |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1238 | goto out_destroy_request_bufs; |
| 1239 | #endif /* CONFIG_CIFS_UPCALL */ |
| 1240 | |
| 1241 | #ifdef CONFIG_CIFS_ACL |
| 1242 | rc = init_cifs_idmap(); |
| 1243 | if (rc) |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1244 | goto out_register_key_type; |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1245 | #endif /* CONFIG_CIFS_ACL */ |
| 1246 | |
| 1247 | rc = register_filesystem(&cifs_fs_type); |
| 1248 | if (rc) |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1249 | goto out_init_cifs_idmap; |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1250 | |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1251 | return 0; |
| 1252 | |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1253 | out_init_cifs_idmap: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1254 | #ifdef CONFIG_CIFS_ACL |
| 1255 | exit_cifs_idmap(); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1256 | out_register_key_type: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1257 | #endif |
| 1258 | #ifdef CONFIG_CIFS_UPCALL |
| 1259 | unregister_key_type(&cifs_spnego_key_type); |
Shirish Pargaonkar | c4aca0c | 2011-05-06 02:35:00 -0500 | [diff] [blame] | 1260 | out_destroy_request_bufs: |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1261 | #endif |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1262 | cifs_destroy_request_bufs(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1263 | out_destroy_mids: |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1264 | cifs_destroy_mids(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1265 | out_destroy_inodecache: |
Steve French | 45af7a0 | 2006-04-21 22:52:25 +0000 | [diff] [blame] | 1266 | cifs_destroy_inodecache(); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1267 | out_unreg_fscache: |
Suresh Jayaraman | f579cf3 | 2010-07-05 18:11:50 +0530 | [diff] [blame] | 1268 | cifs_fscache_unregister(); |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1269 | out_destroy_wq: |
| 1270 | destroy_workqueue(cifsiod_wq); |
Steve French | d3bf522 | 2010-09-22 19:15:36 +0000 | [diff] [blame] | 1271 | out_clean_proc: |
| 1272 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | return rc; |
| 1274 | } |
| 1275 | |
| 1276 | static void __exit |
| 1277 | exit_cifs(void) |
| 1278 | { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1279 | cifs_dbg(NOISY, "exit_cifs\n"); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1280 | unregister_filesystem(&cifs_fs_type); |
Igor Mammedov | 78d31a3 | 2008-04-24 12:56:07 +0400 | [diff] [blame] | 1281 | cifs_dfs_release_automount_timer(); |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1282 | #ifdef CONFIG_CIFS_ACL |
Shirish Pargaonkar | 4d79dba | 2011-04-27 23:34:35 -0500 | [diff] [blame] | 1283 | exit_cifs_idmap(); |
| 1284 | #endif |
Jeff Layton | 84a15b9 | 2007-11-03 05:02:24 +0000 | [diff] [blame] | 1285 | #ifdef CONFIG_CIFS_UPCALL |
| 1286 | unregister_key_type(&cifs_spnego_key_type); |
| 1287 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | cifs_destroy_request_bufs(); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1289 | cifs_destroy_mids(); |
| 1290 | cifs_destroy_inodecache(); |
| 1291 | cifs_fscache_unregister(); |
Jeff Layton | da472fc | 2012-03-23 14:40:53 -0400 | [diff] [blame] | 1292 | destroy_workqueue(cifsiod_wq); |
Jeff Layton | 3dd9330 | 2012-03-21 06:27:55 -0400 | [diff] [blame] | 1293 | cifs_proc_clean(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | } |
| 1295 | |
| 1296 | MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>"); |
Steve French | 6dc0f87 | 2007-07-06 23:13:06 +0000 | [diff] [blame] | 1297 | MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | MODULE_DESCRIPTION |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 1299 | ("VFS to access servers complying with the SNIA CIFS Specification " |
| 1300 | "e.g. Samba and Windows"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | MODULE_VERSION(CIFS_VERSION); |
| 1302 | module_init(init_cifs) |
| 1303 | module_exit(exit_cifs) |