blob: 39e51dcf796fd1eae451fb2c383b66d26acc9564 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/cifsfs.c
3 *
Steve French2b280fa2008-05-17 03:12:45 +00004 * Copyright (C) International Business Machines Corp., 2002,2008
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * 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 French6ab16d22005-11-29 20:55:11 -080035#include <linux/delay.h>
Steve French45af7a02006-04-21 22:52:25 +000036#include <linux/kthread.h>
Nigel Cunningham7dfb7102006-12-06 20:34:23 -080037#include <linux/freezer.h>
Al Virofec11dd2011-07-18 13:50:40 -040038#include <linux/namei.h>
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -070039#include <linux/random.h>
Andrew Lunnc6e970a2017-03-28 23:45:06 +020040#include <linux/uuid.h>
Andreas Gruenbachera9ae0082016-04-22 12:11:38 +020041#include <linux/xattr.h>
Ben Greear3eb9a882010-09-01 17:06:02 -070042#include <net/ipv6.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include "cifsfs.h"
44#include "cifspdu.h"
45#define DECLARE_GLOBALS_HERE
46#include "cifsglob.h"
47#include "cifsproto.h"
48#include "cifs_debug.h"
49#include "cifs_fs_sb.h"
50#include <linux/mm.h>
Jeff Layton84a15b92007-11-03 05:02:24 +000051#include <linux/key-type.h>
Jeff Laytone5459372007-11-03 05:11:06 +000052#include "cifs_spnego.h"
Suresh Jayaramanf579cf32010-07-05 18:11:50 +053053#include "fscache.h"
Pavel Shilovsky3792c172012-01-12 22:40:50 +040054#include "smb2pdu.h"
Paulo Alcantara1c780222018-11-14 16:24:03 -020055#ifdef CONFIG_CIFS_DFS_UPCALL
56#include "dfs_cache.h"
57#endif
Samuel Cabrero06f08da2020-11-30 19:02:49 +010058#ifdef CONFIG_CIFS_SWN_UPCALL
59#include "netlink.h"
60#endif
Ronnie Sahlberg3fa1c6d2020-12-09 23:07:12 -060061#include "fs_context.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Deepa Dinamanicb7a69e2019-03-22 14:32:35 -070063/*
64 * DOS dates from 1980/1/1 through 2107/12/31
65 * Protocol specifications indicate the range should be to 119, which
66 * limits maximum year to 2099. But this range has not been checked.
67 */
68#define SMB_DATE_MAX (127<<9 | 12<<5 | 31)
69#define SMB_DATE_MIN (0<<9 | 1<<5 | 1)
70#define SMB_TIME_MAX (23<<11 | 59<<5 | 29)
71
Linus Torvalds1da177e2005-04-16 15:20:36 -070072int cifsFYI = 0;
Kees Cook14042972016-03-17 14:22:54 -070073bool traceSMB;
Steve Frenche7504732011-10-12 17:47:03 -050074bool enable_oplocks = true;
Kees Cook14042972016-03-17 14:22:54 -070075bool linuxExtEnabled = true;
76bool lookupCacheEnabled = true;
Steve Frenchf92a7202018-05-24 04:11:07 -050077bool disable_legacy_dialects; /* false by default */
Steve French29e27922020-10-14 20:24:09 -050078bool enable_gcm_256; /* false by default, change when more servers support it */
Steve Frenchfbfd0b42020-09-11 16:19:28 -050079bool require_gcm_256; /* false by default */
Jeff Layton04912d62010-04-24 07:57:45 -040080unsigned int global_secflags = CIFSSEC_DEF;
Steve French39798772006-05-31 22:40:51 +000081/* unsigned int ntlmv2_support = 0; */
Linus Torvalds1da177e2005-04-16 15:20:36 -070082unsigned int sign_CIFS_PDUs = 1;
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -080083static const struct super_operations cifs_super_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070084unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
Germano Percossicb978ac2016-09-30 21:25:24 -050085module_param(CIFSMaxBufSize, uint, 0444);
Steve French11911b92018-05-24 02:09:20 -050086MODULE_PARM_DESC(CIFSMaxBufSize, "Network buffer size (not including header) "
87 "for CIFS requests. "
Steve French63135e02007-07-17 17:34:02 +000088 "Default: 16384 Range: 8192 to 130048");
Linus Torvalds1da177e2005-04-16 15:20:36 -070089unsigned int cifs_min_rcv = CIFS_MIN_RCV_POOL;
Germano Percossicb978ac2016-09-30 21:25:24 -050090module_param(cifs_min_rcv, uint, 0444);
Steve French63135e02007-07-17 17:34:02 +000091MODULE_PARM_DESC(cifs_min_rcv, "Network buffers in pool. Default: 4 Range: "
92 "1 to 64");
Linus Torvalds1da177e2005-04-16 15:20:36 -070093unsigned int cifs_min_small = 30;
Germano Percossicb978ac2016-09-30 21:25:24 -050094module_param(cifs_min_small, uint, 0444);
Steve French63135e02007-07-17 17:34:02 +000095MODULE_PARM_DESC(cifs_min_small, "Small network buffers in pool. Default: 30 "
96 "Range: 2 to 256");
Linus Torvalds1da177e2005-04-16 15:20:36 -070097unsigned int cifs_max_pending = CIFS_MAX_REQ;
Jeff Layton60654ce2012-11-25 08:00:34 -050098module_param(cifs_max_pending, uint, 0444);
Steve French11911b92018-05-24 02:09:20 -050099MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server for "
100 "CIFS/SMB1 dialect (N/A for SMB3) "
Pavel Shilovsky10b9b982012-03-20 12:55:09 +0300101 "Default: 32767 Range: 2 to 32767.");
Steve French00778e22018-09-18 14:05:18 -0500102#ifdef CONFIG_CIFS_STATS2
103unsigned int slow_rsp_threshold = 1;
104module_param(slow_rsp_threshold, uint, 0644);
105MODULE_PARM_DESC(slow_rsp_threshold, "Amount of time (in seconds) to wait "
106 "before logging that a response is delayed. "
107 "Default: 1 (if set to 0 disables msg).");
108#endif /* STATS2 */
109
Steve Frenche7504732011-10-12 17:47:03 -0500110module_param(enable_oplocks, bool, 0644);
Jeff Layton60654ce2012-11-25 08:00:34 -0500111MODULE_PARM_DESC(enable_oplocks, "Enable or disable oplocks. Default: y/Y/1");
Steve Frenche7504732011-10-12 17:47:03 -0500112
Steve French29e27922020-10-14 20:24:09 -0500113module_param(enable_gcm_256, bool, 0644);
114MODULE_PARM_DESC(enable_gcm_256, "Enable requesting strongest (256 bit) GCM encryption. Default: n/N/0");
115
Steve Frenchfbfd0b42020-09-11 16:19:28 -0500116module_param(require_gcm_256, bool, 0644);
117MODULE_PARM_DESC(require_gcm_256, "Require strongest (256 bit) GCM encryption. Default: n/N/0");
118
Steve Frenchf92a7202018-05-24 04:11:07 -0500119module_param(disable_legacy_dialects, bool, 0644);
120MODULE_PARM_DESC(disable_legacy_dialects, "To improve security it may be "
121 "helpful to restrict the ability to "
122 "override the default dialects (SMB2.1, "
123 "SMB3 and SMB3.02) on mount with old "
124 "dialects (CIFS/SMB1 and SMB2) since "
125 "vers=1.0 (CIFS/SMB1) and vers=2.0 are weaker"
126 " and less secure. Default: n/N/0");
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128extern mempool_t *cifs_sm_req_poolp;
129extern mempool_t *cifs_req_poolp;
130extern mempool_t *cifs_mid_poolp;
131
Jeff Laytonda472fc2012-03-23 14:40:53 -0400132struct workqueue_struct *cifsiod_wq;
Steve French35cf94a2019-09-07 01:09:49 -0500133struct workqueue_struct *decrypt_wq;
Ronnie Sahlberg32546a92019-11-03 13:06:37 +1000134struct workqueue_struct *fileinfo_put_wq;
Rabin Vincent3998e6b82017-05-03 17:54:01 +0200135struct workqueue_struct *cifsoplockd_wq;
Jeff Layton3d224622016-05-24 06:27:44 -0400136__u32 cifs_lock_secret;
Jeff Laytonda472fc2012-03-23 14:40:53 -0400137
Mateusz Guzik24261fc2013-03-08 16:30:03 +0100138/*
139 * Bumps refcount for cifs super block.
140 * Note that it should be only called if a referece to VFS super block is
141 * already held, e.g. in open-type syscalls context. Otherwise it can race with
142 * atomic_dec_and_test in deactivate_locked_super.
143 */
144void
145cifs_sb_active(struct super_block *sb)
146{
147 struct cifs_sb_info *server = CIFS_SB(sb);
148
149 if (atomic_inc_return(&server->active) == 1)
150 atomic_inc(&sb->s_active);
151}
152
153void
154cifs_sb_deactive(struct super_block *sb)
155{
156 struct cifs_sb_info *server = CIFS_SB(sb);
157
158 if (atomic_dec_and_test(&server->active))
159 deactivate_super(sb);
160}
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162static int
Al Viro97d11522011-06-17 09:29:57 -0400163cifs_read_super(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{
165 struct inode *inode;
Pavel Shilovskyb2e5cd32011-05-25 13:35:34 +0400166 struct cifs_sb_info *cifs_sb;
Jan Klos2f6c9472013-10-06 21:08:20 +0200167 struct cifs_tcon *tcon;
Deepa Dinamanicb7a69e2019-03-22 14:32:35 -0700168 struct timespec64 ts;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 int rc = 0;
Steve French50c2f752007-07-13 00:33:32 +0000170
Pavel Shilovskyb2e5cd32011-05-25 13:35:34 +0400171 cifs_sb = CIFS_SB(sb);
Jan Klos2f6c9472013-10-06 21:08:20 +0200172 tcon = cifs_sb_master_tcon(cifs_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
Al Viro2c6292a2011-06-17 09:05:48 -0400174 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
Linus Torvalds1751e8a2017-11-27 13:05:09 -0800175 sb->s_flags |= SB_POSIXACL;
Al Viro2c6292a2011-06-17 09:05:48 -0400176
Steve French8a69e962018-06-29 16:06:15 -0500177 if (tcon->snapshot_time)
178 sb->s_flags |= SB_RDONLY;
179
Jan Klos2f6c9472013-10-06 21:08:20 +0200180 if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files)
Al Viro2c6292a2011-06-17 09:05:48 -0400181 sb->s_maxbytes = MAX_LFS_FILESIZE;
182 else
183 sb->s_maxbytes = MAX_NON_LFS;
184
Steve French553292a2019-10-11 17:36:13 -0700185 /*
186 * Some very old servers like DOS and OS/2 used 2 second granularity
187 * (while all current servers use 100ns granularity - see MS-DTYP)
188 * but 1 second is the maximum allowed granularity for the VFS
189 * so for old servers set time granularity to 1 second while for
190 * everything else (current servers) set it to 100ns.
191 */
Steve Frenchd4cfbf02019-10-08 00:27:14 -0500192 if ((tcon->ses->server->vals->protocol_id == SMB10_PROT_ID) &&
193 ((tcon->ses->capabilities &
194 tcon->ses->server->vals->cap_nt_find) == 0) &&
195 !tcon->unix_ext) {
196 sb->s_time_gran = 1000000000; /* 1 second is max allowed gran */
197 ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MIN), 0, 0);
198 sb->s_time_min = ts.tv_sec;
199 ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MAX),
200 cpu_to_le16(SMB_TIME_MAX), 0);
201 sb->s_time_max = ts.tv_sec;
202 } else {
203 /*
204 * Almost every server, including all SMB2+, uses DCE TIME
205 * ie 100 nanosecond units, since 1601. See MS-DTYP and MS-FSCC
206 */
207 sb->s_time_gran = 100;
Deepa Dinamanicb7a69e2019-03-22 14:32:35 -0700208 ts = cifs_NTtimeToUnix(0);
209 sb->s_time_min = ts.tv_sec;
210 ts = cifs_NTtimeToUnix(cpu_to_le64(S64_MAX));
211 sb->s_time_max = ts.tv_sec;
Deepa Dinamanicb7a69e2019-03-22 14:32:35 -0700212 }
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 sb->s_magic = CIFS_MAGIC_NUMBER;
215 sb->s_op = &cifs_super_ops;
Andreas Gruenbachera9ae0082016-04-22 12:11:38 +0200216 sb->s_xattr = cifs_xattr_handlers;
Jan Kara851ea082017-04-12 12:24:34 +0200217 rc = super_setup_bdi(sb);
218 if (rc)
219 goto out_no_root;
220 /* tune readahead according to rsize */
Ronnie Sahlberg522aa3b2020-12-14 16:40:17 +1000221 sb->s_bdi->ra_pages = cifs_sb->ctx->rsize / PAGE_SIZE;
Jan Kara851ea082017-04-12 12:24:34 +0200222
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 sb->s_blocksize = CIFS_MAX_MSGSIZE;
224 sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
Shirish Pargaonkar9b6763e2011-02-21 23:56:59 -0600225 inode = cifs_root_iget(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
David Howellsce634ab2008-02-07 00:15:33 -0800227 if (IS_ERR(inode)) {
228 rc = PTR_ERR(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 goto out_no_root;
230 }
231
Jan Klos2f6c9472013-10-06 21:08:20 +0200232 if (tcon->nocase)
Jeff Layton66ffd112013-07-30 11:38:44 -0400233 sb->s_d_op = &cifs_ci_dentry_ops;
234 else
235 sb->s_d_op = &cifs_dentry_ops;
236
Al Viro48fde702012-01-08 22:15:13 -0500237 sb->s_root = d_make_root(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 if (!sb->s_root) {
239 rc = -ENOMEM;
240 goto out_no_root;
241 }
Steve French50c2f752007-07-13 00:33:32 +0000242
Paul Bollef3a6a602011-10-12 14:14:04 +0200243#ifdef CONFIG_CIFS_NFSD_EXPORT
Steve French7521a3c2007-07-11 18:30:34 +0000244 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500245 cifs_dbg(FYI, "export ops supported\n");
Steve French7521a3c2007-07-11 18:30:34 +0000246 sb->s_export_op = &cifs_export_ops;
247 }
Paul Bollef3a6a602011-10-12 14:14:04 +0200248#endif /* CONFIG_CIFS_NFSD_EXPORT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
250 return 0;
251
252out_no_root:
Joe Perchesf96637b2013-05-04 22:12:25 -0500253 cifs_dbg(VFS, "%s: get root inode failed\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 return rc;
255}
256
Al Viro6d686172011-06-17 08:34:57 -0400257static void cifs_kill_sb(struct super_block *sb)
258{
259 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
260 kill_anon_super(sb);
Al Viro98ab4942011-06-17 09:32:10 -0400261 cifs_umount(cifs_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262}
263
264static int
David Howells726c3342006-06-23 02:02:58 -0700265cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266{
David Howells726c3342006-06-23 02:02:58 -0700267 struct super_block *sb = dentry->d_sb;
Steve French39da9842008-04-28 04:04:34 +0000268 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
Steve French96daf2b2011-05-27 04:34:02 +0000269 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -0700270 struct TCP_Server_Info *server = tcon->ses->server;
Pavel Shilovsky6d5786a2012-06-20 11:21:16 +0400271 unsigned int xid;
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -0700272 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Pavel Shilovsky6d5786a2012-06-20 11:21:16 +0400274 xid = get_xid();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
Steve French21ba3842018-06-24 23:18:52 -0500276 if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0)
277 buf->f_namelen =
278 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength);
279 else
280 buf->f_namelen = PATH_MAX;
281
282 buf->f_fsid.val[0] = tcon->vol_serial_number;
283 /* are using part of create time for more randomness, see man statfs */
284 buf->f_fsid.val[1] = (int)le64_to_cpu(tcon->vol_create_time);
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 buf->f_files = 0; /* undefined */
287 buf->f_ffree = 0; /* unlimited */
288
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -0700289 if (server->ops->queryfs)
Amir Goldstein0f060932020-02-03 21:46:43 +0200290 rc = server->ops->queryfs(xid, tcon, cifs_sb, buf);
Steve French39da9842008-04-28 04:04:34 +0000291
Pavel Shilovsky6d5786a2012-06-20 11:21:16 +0400292 free_xid(xid);
Steve French39da9842008-04-28 04:04:34 +0000293 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294}
295
Steve French31742c52014-08-17 08:38:47 -0500296static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len)
297{
Al Viro7119e222014-10-22 00:25:12 -0400298 struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
Steve French31742c52014-08-17 08:38:47 -0500299 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
300 struct TCP_Server_Info *server = tcon->ses->server;
301
302 if (server->ops->fallocate)
303 return server->ops->fallocate(file, tcon, mode, off, len);
304
305 return -EOPNOTSUPP;
306}
307
Christian Brauner549c7292021-01-21 14:19:43 +0100308static int cifs_permission(struct user_namespace *mnt_userns,
309 struct inode *inode, int mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310{
311 struct cifs_sb_info *cifs_sb;
312
313 cifs_sb = CIFS_SB(inode->i_sb);
314
Miklos Szeredif696a362008-07-31 13:41:58 +0200315 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) {
316 if ((mask & MAY_EXEC) && !execute_ok(inode))
317 return -EACCES;
318 else
319 return 0;
320 } else /* file mode might have been restricted at mount time
Steve French50c2f752007-07-13 00:33:32 +0000321 on the client (above and beyond ACL on servers) for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 servers which do not support setting and viewing mode bits,
Steve French50c2f752007-07-13 00:33:32 +0000323 so allowing client to check permissions is useful */
Christian Brauner47291ba2021-01-21 14:19:24 +0100324 return generic_permission(&init_user_ns, inode, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325}
326
Christoph Lametere18b8902006-12-06 20:33:20 -0800327static struct kmem_cache *cifs_inode_cachep;
328static struct kmem_cache *cifs_req_cachep;
329static struct kmem_cache *cifs_mid_cachep;
Christoph Lametere18b8902006-12-06 20:33:20 -0800330static struct kmem_cache *cifs_sm_req_cachep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331mempool_t *cifs_sm_req_poolp;
332mempool_t *cifs_req_poolp;
333mempool_t *cifs_mid_poolp;
334
335static struct inode *
336cifs_alloc_inode(struct super_block *sb)
337{
338 struct cifsInodeInfo *cifs_inode;
Christoph Lametere94b1762006-12-06 20:33:17 -0800339 cifs_inode = kmem_cache_alloc(cifs_inode_cachep, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 if (!cifs_inode)
341 return NULL;
342 cifs_inode->cifsAttrs = 0x20; /* default */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 cifs_inode->time = 0;
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700344 /*
345 * Until the file is open and we have gotten oplock info back from the
346 * server, can not assume caching of file data or metadata.
347 */
Pavel Shilovskyc6723622010-11-03 10:58:57 +0300348 cifs_set_oplock_level(cifs_inode, 0);
Jeff Laytonaff8d5c2014-04-30 09:31:45 -0400349 cifs_inode->flags = 0;
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000350 spin_lock_init(&cifs_inode->writers_lock);
351 cifs_inode->writers = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
Jeff Laytonfbec9ab2009-04-03 13:44:00 -0400353 cifs_inode->server_eof = 0;
Jeff Layton20054bd2011-01-07 11:30:27 -0500354 cifs_inode->uniqueid = 0;
355 cifs_inode->createtime = 0;
Pavel Shilovsky42873b02013-09-05 21:30:16 +0400356 cifs_inode->epoch = 0;
Ronnie Sahlberg487317c2019-06-05 10:38:38 +1000357 spin_lock_init(&cifs_inode->open_file_lock);
Steve Frenchfa70b872016-09-22 00:39:34 -0500358 generate_random_uuid(cifs_inode->lease_key);
Steve French2a38e122017-07-08 18:48:15 -0500359
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700360 /*
361 * Can not set i_flags here - they get immediately overwritten to zero
362 * by the VFS.
363 */
364 /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 INIT_LIST_HEAD(&cifs_inode->openFileList);
Pavel Shilovskyf45d3412012-09-19 06:22:43 -0700366 INIT_LIST_HEAD(&cifs_inode->llist);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 return &cifs_inode->vfs_inode;
368}
369
370static void
Al Viroc2e68022019-04-14 23:18:35 -0400371cifs_free_inode(struct inode *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372{
Al Viroc2e68022019-04-14 23:18:35 -0400373 kmem_cache_free(cifs_inode_cachep, CIFS_I(inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374}
375
Jeff Layton61f98ff2009-06-11 10:27:32 -0400376static void
Al Virob57922d2010-06-07 14:34:48 -0400377cifs_evict_inode(struct inode *inode)
Suresh Jayaraman9451a9a2010-07-05 18:12:45 +0530378{
Johannes Weiner91b0abe2014-04-03 14:47:49 -0700379 truncate_inode_pages_final(&inode->i_data);
Jan Karadbd57682012-05-03 14:48:02 +0200380 clear_inode(inode);
Suresh Jayaraman9451a9a2010-07-05 18:12:45 +0530381 cifs_fscache_release_inode_cookie(inode);
382}
383
384static void
Jeff Layton61f98ff2009-06-11 10:27:32 -0400385cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
386{
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300387 struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
388 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
389
Fabian Frederick571d5972014-05-13 18:04:17 +0200390 seq_puts(s, ",addr=");
Jeff Layton61f98ff2009-06-11 10:27:32 -0400391
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300392 switch (server->dstaddr.ss_family) {
Jeff Layton61f98ff2009-06-11 10:27:32 -0400393 case AF_INET:
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300394 seq_printf(s, "%pI4", &sa->sin_addr.s_addr);
Jeff Layton61f98ff2009-06-11 10:27:32 -0400395 break;
396 case AF_INET6:
Pavel Shilovskya9f1b852010-12-13 19:08:35 +0300397 seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr);
398 if (sa6->sin6_scope_id)
399 seq_printf(s, "%%%u", sa6->sin6_scope_id);
Jeff Layton61f98ff2009-06-11 10:27:32 -0400400 break;
401 default:
Fabian Frederick571d5972014-05-13 18:04:17 +0200402 seq_puts(s, "(unknown)");
Jeff Layton61f98ff2009-06-11 10:27:32 -0400403 }
Long Li8339dd32017-11-07 01:54:55 -0700404 if (server->rdma)
405 seq_puts(s, ",rdma");
Jeff Layton61f98ff2009-06-11 10:27:32 -0400406}
407
Jeff Layton3e715512011-06-13 11:50:41 -0400408static void
Jeff Layton28e11bd2013-05-26 07:01:00 -0400409cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
Jeff Layton3e715512011-06-13 11:50:41 -0400410{
Steve Frencheda21162015-09-11 19:24:19 -0500411 if (ses->sectype == Unspecified) {
412 if (ses->user_name == NULL)
413 seq_puts(s, ",sec=none");
Jeff Layton28e11bd2013-05-26 07:01:00 -0400414 return;
Steve Frencheda21162015-09-11 19:24:19 -0500415 }
Jeff Layton28e11bd2013-05-26 07:01:00 -0400416
Fabian Frederick571d5972014-05-13 18:04:17 +0200417 seq_puts(s, ",sec=");
Jeff Layton3e715512011-06-13 11:50:41 -0400418
Jeff Layton28e11bd2013-05-26 07:01:00 -0400419 switch (ses->sectype) {
Jeff Layton3e715512011-06-13 11:50:41 -0400420 case LANMAN:
Fabian Frederick571d5972014-05-13 18:04:17 +0200421 seq_puts(s, "lanman");
Jeff Layton3e715512011-06-13 11:50:41 -0400422 break;
423 case NTLMv2:
Fabian Frederick571d5972014-05-13 18:04:17 +0200424 seq_puts(s, "ntlmv2");
Jeff Layton3e715512011-06-13 11:50:41 -0400425 break;
426 case NTLM:
Fabian Frederick571d5972014-05-13 18:04:17 +0200427 seq_puts(s, "ntlm");
Jeff Layton3e715512011-06-13 11:50:41 -0400428 break;
429 case Kerberos:
Petr Pavlu3f6166a2020-02-10 10:38:14 +0100430 seq_puts(s, "krb5");
Jeff Layton3e715512011-06-13 11:50:41 -0400431 break;
432 case RawNTLMSSP:
Fabian Frederick571d5972014-05-13 18:04:17 +0200433 seq_puts(s, "ntlmssp");
Jeff Layton3e715512011-06-13 11:50:41 -0400434 break;
435 default:
436 /* shouldn't ever happen */
Fabian Frederick571d5972014-05-13 18:04:17 +0200437 seq_puts(s, "unknown");
Jeff Layton3e715512011-06-13 11:50:41 -0400438 break;
439 }
440
Jeff Layton28e11bd2013-05-26 07:01:00 -0400441 if (ses->sign)
Fabian Frederick571d5972014-05-13 18:04:17 +0200442 seq_puts(s, "i");
Petr Pavlu3f6166a2020-02-10 10:38:14 +0100443
444 if (ses->sectype == Kerberos)
445 seq_printf(s, ",cruid=%u",
446 from_kuid_munged(&init_user_ns, ses->cred_uid));
Jeff Layton3e715512011-06-13 11:50:41 -0400447}
448
Jeff Laytond06b5052012-05-16 07:53:01 -0400449static void
450cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
451{
Fabian Frederick571d5972014-05-13 18:04:17 +0200452 seq_puts(s, ",cache=");
Jeff Laytond06b5052012-05-16 07:53:01 -0400453
454 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO)
Fabian Frederick571d5972014-05-13 18:04:17 +0200455 seq_puts(s, "strict");
Jeff Laytond06b5052012-05-16 07:53:01 -0400456 else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
Fabian Frederick571d5972014-05-13 18:04:17 +0200457 seq_puts(s, "none");
Steve French41e033f2019-08-30 02:12:41 -0500458 else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)
459 seq_puts(s, "singleclient"); /* assume only one client access */
Steve French83bbfa72019-08-27 23:58:54 -0500460 else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)
461 seq_puts(s, "ro"); /* read only caching assumed */
Jeff Laytond06b5052012-05-16 07:53:01 -0400462 else
Fabian Frederick571d5972014-05-13 18:04:17 +0200463 seq_puts(s, "loose");
Jeff Laytond06b5052012-05-16 07:53:01 -0400464}
465
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466/*
Steve French653a5ef2020-12-14 20:08:10 -0600467 * cifs_show_devname() is used so we show the mount device name with correct
468 * format (e.g. forward slashes vs. back slashes) in /proc/mounts
469 */
470static int cifs_show_devname(struct seq_file *m, struct dentry *root)
471{
472 struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
473 char *devname = kstrdup(cifs_sb->ctx->UNC, GFP_KERNEL);
474
475 if (devname == NULL)
476 seq_puts(m, "none");
477 else {
478 convert_delimiter(devname, '/');
479 seq_puts(m, devname);
480 kfree(devname);
481 }
482 return 0;
483}
484
485/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 * cifs_show_options() is for displaying mount options in /proc/mounts.
487 * Not all settable options are displayed but most of the important
488 * ones are.
489 */
490static int
Al Viro34c80b12011-12-08 21:32:45 -0500491cifs_show_options(struct seq_file *s, struct dentry *root)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492{
Al Viro34c80b12011-12-08 21:32:45 -0500493 struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
Steve French96daf2b2011-05-27 04:34:02 +0000494 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
Ben Greear3eb9a882010-09-01 17:06:02 -0700495 struct sockaddr *srcaddr;
496 srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Kees Cooka068acf2015-09-04 15:44:57 -0700498 seq_show_option(s, "vers", tcon->ses->server->vals->version_string);
Jeff Layton28e11bd2013-05-26 07:01:00 -0400499 cifs_show_security(s, tcon->ses);
Jeff Laytond06b5052012-05-16 07:53:01 -0400500 cifs_show_cache_flavor(s, cifs_sb);
Jeff Layton3e715512011-06-13 11:50:41 -0400501
Steve French3e7a02d2019-09-11 21:46:20 -0500502 if (tcon->no_lease)
503 seq_puts(s, ",nolease");
Ronnie Sahlberg9ccecae2020-12-14 16:40:19 +1000504 if (cifs_sb->ctx->multiuser)
Fabian Frederick571d5972014-05-13 18:04:17 +0200505 seq_puts(s, ",multiuser");
Steve French8727c8a2011-02-25 01:11:56 -0600506 else if (tcon->ses->user_name)
Kees Cooka068acf2015-09-04 15:44:57 -0700507 seq_show_option(s, "username", tcon->ses->user_name);
Jeff Layton29e07c82010-09-29 19:51:12 -0400508
Ronnie Sahlberge55954a2018-08-10 11:31:10 +1000509 if (tcon->ses->domainName && tcon->ses->domainName[0] != 0)
Kees Cooka068acf2015-09-04 15:44:57 -0700510 seq_show_option(s, "domain", tcon->ses->domainName);
Jeff Layton8616e0f2009-06-11 10:27:28 -0400511
Ben Greear3eb9a882010-09-01 17:06:02 -0700512 if (srcaddr->sa_family != AF_UNSPEC) {
513 struct sockaddr_in *saddr4;
514 struct sockaddr_in6 *saddr6;
515 saddr4 = (struct sockaddr_in *)srcaddr;
516 saddr6 = (struct sockaddr_in6 *)srcaddr;
517 if (srcaddr->sa_family == AF_INET6)
518 seq_printf(s, ",srcaddr=%pI6c",
519 &saddr6->sin6_addr);
520 else if (srcaddr->sa_family == AF_INET)
521 seq_printf(s, ",srcaddr=%pI4",
522 &saddr4->sin_addr.s_addr);
523 else
524 seq_printf(s, ",srcaddr=BAD-AF:%i",
525 (int)(srcaddr->sa_family));
526 }
527
Eric W. Biederman1f682332013-02-06 01:20:20 -0800528 seq_printf(s, ",uid=%u",
Ronnie Sahlberg8401e932020-12-12 13:40:50 -0600529 from_kuid_munged(&init_user_ns, cifs_sb->ctx->linux_uid));
Jeff Layton340481a32009-06-11 10:27:29 -0400530 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
Fabian Frederick571d5972014-05-13 18:04:17 +0200531 seq_puts(s, ",forceuid");
Jeff Layton4486d6e2009-08-03 12:45:10 -0400532 else
Fabian Frederick571d5972014-05-13 18:04:17 +0200533 seq_puts(s, ",noforceuid");
Jeff Layton340481a32009-06-11 10:27:29 -0400534
Eric W. Biederman1f682332013-02-06 01:20:20 -0800535 seq_printf(s, ",gid=%u",
Ronnie Sahlberg8401e932020-12-12 13:40:50 -0600536 from_kgid_munged(&init_user_ns, cifs_sb->ctx->linux_gid));
Jeff Layton340481a32009-06-11 10:27:29 -0400537 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
Fabian Frederick571d5972014-05-13 18:04:17 +0200538 seq_puts(s, ",forcegid");
Jeff Layton4486d6e2009-08-03 12:45:10 -0400539 else
Fabian Frederick571d5972014-05-13 18:04:17 +0200540 seq_puts(s, ",noforcegid");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400541
Jeff Layton61f98ff2009-06-11 10:27:32 -0400542 cifs_show_address(s, tcon->ses->server);
Jeff Layton8616e0f2009-06-11 10:27:28 -0400543
544 if (!tcon->unix_ext)
Al Viro5206efd2011-07-26 03:22:14 -0400545 seq_printf(s, ",file_mode=0%ho,dir_mode=0%ho",
Ronnie Sahlberg8401e932020-12-12 13:40:50 -0600546 cifs_sb->ctx->file_mode,
547 cifs_sb->ctx->dir_mode);
Ronnie Sahlberg7c7ee622020-12-14 16:40:22 +1000548 if (cifs_sb->ctx->iocharset)
549 seq_printf(s, ",iocharset=%s", cifs_sb->ctx->iocharset);
Jeff Layton8616e0f2009-06-11 10:27:28 -0400550 if (tcon->seal)
Fabian Frederick571d5972014-05-13 18:04:17 +0200551 seq_puts(s, ",seal");
Steve Frenchec570102020-02-19 23:59:32 -0600552 else if (tcon->ses->server->ignore_signature)
553 seq_puts(s, ",signloosely");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400554 if (tcon->nocase)
Fabian Frederick571d5972014-05-13 18:04:17 +0200555 seq_puts(s, ",nocase");
Steve French82e93672020-05-19 03:06:57 -0500556 if (tcon->nodelete)
557 seq_puts(s, ",nodelete");
Kenneth D'souzac8b6ac12019-01-21 11:51:59 +1000558 if (tcon->local_lease)
559 seq_puts(s, ",locallease");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400560 if (tcon->retry)
Fabian Frederick571d5972014-05-13 18:04:17 +0200561 seq_puts(s, ",hard");
Ronnie Sahlberg6e82e922017-09-20 13:09:23 +1000562 else
563 seq_puts(s, ",soft");
Steve Frenchf16dfa72015-09-30 21:07:59 -0500564 if (tcon->use_persistent)
565 seq_puts(s, ",persistenthandles");
Steve French592fafe2015-11-03 10:08:53 -0600566 else if (tcon->use_resilient)
567 seq_puts(s, ",resilienthandles");
Steve Frenchb3266142018-05-20 23:41:10 -0500568 if (tcon->posix_extensions)
569 seq_puts(s, ",posix");
570 else if (tcon->unix_ext)
571 seq_puts(s, ",unix");
572 else
573 seq_puts(s, ",nounix");
Aurelien Aptel83930722018-09-20 18:10:25 -0700574 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)
575 seq_puts(s, ",nodfs");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400576 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
Fabian Frederick571d5972014-05-13 18:04:17 +0200577 seq_puts(s, ",posixpaths");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400578 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)
Fabian Frederick571d5972014-05-13 18:04:17 +0200579 seq_puts(s, ",setuids");
Steve French95932652016-09-23 01:36:34 -0500580 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UID_FROM_ACL)
581 seq_puts(s, ",idsfromsid");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400582 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
Fabian Frederick571d5972014-05-13 18:04:17 +0200583 seq_puts(s, ",serverino");
Pavel Shilovskyd4ffff12011-05-26 06:02:00 +0000584 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
Fabian Frederick571d5972014-05-13 18:04:17 +0200585 seq_puts(s, ",rwpidforward");
Pavel Shilovskyd4ffff12011-05-26 06:02:00 +0000586 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL)
Fabian Frederick571d5972014-05-13 18:04:17 +0200587 seq_puts(s, ",forcemand");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400588 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
Fabian Frederick571d5972014-05-13 18:04:17 +0200589 seq_puts(s, ",nouser_xattr");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400590 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
Fabian Frederick571d5972014-05-13 18:04:17 +0200591 seq_puts(s, ",mapchars");
Nakajima Akirabc8ebdc42015-02-13 15:35:58 +0900592 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR)
593 seq_puts(s, ",mapposix");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400594 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
Fabian Frederick571d5972014-05-13 18:04:17 +0200595 seq_puts(s, ",sfu");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400596 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Fabian Frederick571d5972014-05-13 18:04:17 +0200597 seq_puts(s, ",nobrl");
Steve French3d4ef9a2018-04-25 22:19:09 -0500598 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_HANDLE_CACHE)
599 seq_puts(s, ",nohandlecache");
Steve French412094a2019-06-24 02:01:42 -0500600 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID)
601 seq_puts(s, ",modefromsid");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400602 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
Fabian Frederick571d5972014-05-13 18:04:17 +0200603 seq_puts(s, ",cifsacl");
Jeff Layton8616e0f2009-06-11 10:27:28 -0400604 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
Fabian Frederick571d5972014-05-13 18:04:17 +0200605 seq_puts(s, ",dynperm");
Linus Torvalds1751e8a2017-11-27 13:05:09 -0800606 if (root->d_sb->s_flags & SB_POSIXACL)
Fabian Frederick571d5972014-05-13 18:04:17 +0200607 seq_puts(s, ",acl");
Stefan Metzmacher736a33202010-07-30 14:56:00 +0200608 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
Fabian Frederick571d5972014-05-13 18:04:17 +0200609 seq_puts(s, ",mfsymlinks");
Suresh Jayaraman476428f2010-11-24 17:49:07 +0530610 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE)
Fabian Frederick571d5972014-05-13 18:04:17 +0200611 seq_puts(s, ",fsc");
Steve French71c424b2011-10-19 20:44:48 -0500612 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)
Fabian Frederick571d5972014-05-13 18:04:17 +0200613 seq_puts(s, ",nostrictsync");
Steve French71c424b2011-10-19 20:44:48 -0500614 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
Fabian Frederick571d5972014-05-13 18:04:17 +0200615 seq_puts(s, ",noperm");
Sachin Prabhu3c7c87f2012-04-24 15:28:14 +0100616 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
Eric W. Biederman1f682332013-02-06 01:20:20 -0800617 seq_printf(s, ",backupuid=%u",
618 from_kuid_munged(&init_user_ns,
Ronnie Sahlberg8401e932020-12-12 13:40:50 -0600619 cifs_sb->ctx->backupuid));
Sachin Prabhu3c7c87f2012-04-24 15:28:14 +0100620 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID)
Eric W. Biederman1f682332013-02-06 01:20:20 -0800621 seq_printf(s, ",backupgid=%u",
622 from_kgid_munged(&init_user_ns,
Ronnie Sahlberg8401e932020-12-12 13:40:50 -0600623 cifs_sb->ctx->backupgid));
Steve French2b280fa2008-05-17 03:12:45 +0000624
Steve French0c2b5f72020-12-15 13:28:50 -0600625 seq_printf(s, ",rsize=%u", cifs_sb->ctx->rsize);
626 seq_printf(s, ",wsize=%u", cifs_sb->ctx->wsize);
627 seq_printf(s, ",bsize=%u", cifs_sb->ctx->bsize);
Steve French563317e2019-09-08 23:22:02 -0500628 if (tcon->ses->server->min_offload)
629 seq_printf(s, ",esize=%u", tcon->ses->server->min_offload);
Steve Frenchadfeb3e2015-12-18 12:31:36 -0600630 seq_printf(s, ",echo_interval=%lu",
631 tcon->ses->server->echo_interval / HZ);
Steve Frenchdc179262019-06-17 17:34:57 -0500632
633 /* Only display max_credits if it was overridden on mount */
634 if (tcon->ses->server->max_credits != SMB2_MAX_CREDITS_AVAILABLE)
635 seq_printf(s, ",max_credits=%u", tcon->ses->server->max_credits);
636
Steve French8a69e962018-06-29 16:06:15 -0500637 if (tcon->snapshot_time)
638 seq_printf(s, ",snapshot=%llu", tcon->snapshot_time);
Steve Frenchca567eb2019-03-29 16:31:07 -0500639 if (tcon->handle_timeout)
640 seq_printf(s, ",handletimeout=%u", tcon->handle_timeout);
Suresh Jayaraman6d20e842010-12-01 14:42:28 +0530641 /* convert actimeo and display it in seconds */
Ronnie Sahlbergaf1e40d2020-11-10 12:34:48 +1000642 seq_printf(s, ",actimeo=%lu", cifs_sb->ctx->actimeo / HZ);
Jeff Layton8616e0f2009-06-11 10:27:28 -0400643
Aurelien Aptelbcc88802019-09-20 04:32:20 +0200644 if (tcon->ses->chan_max > 1)
Steve French7866c172020-06-09 19:50:40 -0500645 seq_printf(s, ",multichannel,max_channels=%zu",
Aurelien Aptelbcc88802019-09-20 04:32:20 +0200646 tcon->ses->chan_max);
647
Samuel Cabrero0ac4e292020-12-11 22:59:29 -0600648#ifdef CONFIG_CIFS_SWN_UPCALL
649 if (tcon->use_witness)
650 seq_puts(s, ",witness");
651#endif
652
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 return 0;
654}
655
Al Viro42faad92008-04-24 07:21:56 -0400656static void cifs_umount_begin(struct super_block *sb)
Steve French68058e72005-10-10 10:34:22 -0700657{
Al Viro42faad92008-04-24 07:21:56 -0400658 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
Steve French96daf2b2011-05-27 04:34:02 +0000659 struct cifs_tcon *tcon;
Steve French68058e72005-10-10 10:34:22 -0700660
Steve French4523cc32007-04-30 20:13:06 +0000661 if (cifs_sb == NULL)
Steve French9e2e85f2005-10-10 14:28:38 -0700662 return;
663
Jeff Layton0d424ad2010-09-20 16:01:35 -0700664 tcon = cifs_sb_master_tcon(cifs_sb);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500665
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530666 spin_lock(&cifs_tcp_ses_lock);
Steve Frenchad8034f2009-06-26 03:25:49 +0000667 if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) {
668 /* we have other mounts to same share or we have
669 already tried to force umount this and woken up
670 all waiting network requests, nothing to do */
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530671 spin_unlock(&cifs_tcp_ses_lock);
Steve Frenchad8034f2009-06-26 03:25:49 +0000672 return;
673 } else if (tcon->tc_count == 1)
Steve French5e1253b2005-10-10 14:06:37 -0700674 tcon->tidStatus = CifsExiting;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530675 spin_unlock(&cifs_tcp_ses_lock);
Steve French5e1253b2005-10-10 14:06:37 -0700676
Steve French3a5ff612006-07-14 22:37:11 +0000677 /* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
Steve French7b7abfe2005-11-09 15:21:09 -0800678 /* cancel_notify_requests(tcon); */
Steve French50c2f752007-07-13 00:33:32 +0000679 if (tcon->ses && tcon->ses->server) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500680 cifs_dbg(FYI, "wake up tasks now - umount begin not complete\n");
Steve French9e2e85f2005-10-10 14:28:38 -0700681 wake_up_all(&tcon->ses->server->request_q);
Steve French6ab16d22005-11-29 20:55:11 -0800682 wake_up_all(&tcon->ses->server->response_q);
683 msleep(1); /* yield */
684 /* we have to kick the requests once more */
685 wake_up_all(&tcon->ses->server->response_q);
686 msleep(1);
Steve French5e1253b2005-10-10 14:06:37 -0700687 }
Steve French68058e72005-10-10 10:34:22 -0700688
689 return;
690}
Steve French68058e72005-10-10 10:34:22 -0700691
Steve Frenchbf97d282006-09-28 21:34:06 +0000692#ifdef CONFIG_CIFS_STATS2
Al Viro64132372011-12-08 20:51:13 -0500693static int cifs_show_stats(struct seq_file *s, struct dentry *root)
Steve Frenchbf97d282006-09-28 21:34:06 +0000694{
695 /* BB FIXME */
696 return 0;
697}
698#endif
699
Al Viro45321ac2010-06-07 13:43:19 -0400700static int cifs_drop_inode(struct inode *inode)
Jeff Layton12420ac2010-06-01 14:47:40 -0400701{
702 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
703
Al Viro45321ac2010-06-07 13:43:19 -0400704 /* no serverino => unconditional eviction */
705 return !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) ||
706 generic_drop_inode(inode);
Jeff Layton12420ac2010-06-01 14:47:40 -0400707}
708
Josef 'Jeff' Sipekee9b6d62007-02-12 00:55:41 -0800709static const struct super_operations cifs_super_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 .statfs = cifs_statfs,
711 .alloc_inode = cifs_alloc_inode,
Al Viroc2e68022019-04-14 23:18:35 -0400712 .free_inode = cifs_free_inode,
Jeff Layton12420ac2010-06-01 14:47:40 -0400713 .drop_inode = cifs_drop_inode,
Al Virob57922d2010-06-07 14:34:48 -0400714 .evict_inode = cifs_evict_inode,
Steve French653a5ef2020-12-14 20:08:10 -0600715/* .show_path = cifs_show_path, */ /* Would we ever need show path? */
716 .show_devname = cifs_show_devname,
Jeff Layton12420ac2010-06-01 14:47:40 -0400717/* .delete_inode = cifs_delete_inode, */ /* Do not need above
718 function unless later we add lazy close of inodes or unless the
Steve French50c2f752007-07-13 00:33:32 +0000719 kernel forgets to call us with the same number of releases (closes)
720 as opens */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 .show_options = cifs_show_options,
Steve French7b7abfe2005-11-09 15:21:09 -0800722 .umount_begin = cifs_umount_begin,
Steve Frenchbf97d282006-09-28 21:34:06 +0000723#ifdef CONFIG_CIFS_STATS2
Steve Frenchf46d3e12006-09-30 01:08:55 +0000724 .show_stats = cifs_show_stats,
Steve Frenchbf97d282006-09-28 21:34:06 +0000725#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726};
727
Steve Frenchf87d39d2011-05-27 03:50:55 +0000728/*
729 * Get root dentry from superblock according to prefix path mount option.
730 * Return dentry with refcount + 1 on success and NULL otherwise.
731 */
732static struct dentry *
Ronnie Sahlberg3fa1c6d2020-12-09 23:07:12 -0600733cifs_get_root(struct smb3_fs_context *ctx, struct super_block *sb)
Steve Frenchf87d39d2011-05-27 03:50:55 +0000734{
Al Virofec11dd2011-07-18 13:50:40 -0400735 struct dentry *dentry;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000736 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
Al Virofec11dd2011-07-18 13:50:40 -0400737 char *full_path = NULL;
738 char *s, *p;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000739 char sep;
740
Sachin Prabhu348c1bf2016-07-29 22:38:21 +0100741 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
742 return dget(sb->s_root);
743
Ronnie Sahlberg3fa1c6d2020-12-09 23:07:12 -0600744 full_path = cifs_build_path_to_root(ctx, cifs_sb,
Sachin Prabhu374402a2016-12-15 12:31:19 +0530745 cifs_sb_master_tcon(cifs_sb), 0);
Steve Frenchf87d39d2011-05-27 03:50:55 +0000746 if (full_path == NULL)
Al Viro9403c9c2011-06-17 10:02:59 -0400747 return ERR_PTR(-ENOMEM);
Steve Frenchf87d39d2011-05-27 03:50:55 +0000748
Joe Perchesf96637b2013-05-04 22:12:25 -0500749 cifs_dbg(FYI, "Get root dentry for %s\n", full_path);
Steve Frenchf87d39d2011-05-27 03:50:55 +0000750
Steve Frenchf87d39d2011-05-27 03:50:55 +0000751 sep = CIFS_DIR_SEP(cifs_sb);
Al Virofec11dd2011-07-18 13:50:40 -0400752 dentry = dget(sb->s_root);
753 p = s = full_path;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000754
Al Virofec11dd2011-07-18 13:50:40 -0400755 do {
David Howells2b0143b2015-03-17 22:25:59 +0000756 struct inode *dir = d_inode(dentry);
Al Virofec11dd2011-07-18 13:50:40 -0400757 struct dentry *child;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000758
Jeff Laytonce2ac522013-02-01 15:11:01 -0500759 if (!S_ISDIR(dir->i_mode)) {
760 dput(dentry);
761 dentry = ERR_PTR(-ENOTDIR);
762 break;
763 }
Pavel Shilovsky5b980b02011-08-21 19:30:15 +0400764
Al Virofec11dd2011-07-18 13:50:40 -0400765 /* skip separators */
766 while (*s == sep)
767 s++;
768 if (!*s)
769 break;
770 p = s++;
771 /* next separator */
772 while (*s && *s != sep)
773 s++;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000774
Al Viro6c2d47982019-10-31 01:21:58 -0400775 child = lookup_positive_unlocked(p, dentry, s - p);
Al Virofec11dd2011-07-18 13:50:40 -0400776 dput(dentry);
777 dentry = child;
778 } while (!IS_ERR(dentry));
Steve Frenchf87d39d2011-05-27 03:50:55 +0000779 kfree(full_path);
Al Virofec11dd2011-07-18 13:50:40 -0400780 return dentry;
Steve Frenchf87d39d2011-05-27 03:50:55 +0000781}
782
Al Viroee01a142011-06-17 09:47:23 -0400783static int cifs_set_super(struct super_block *sb, void *data)
784{
785 struct cifs_mnt_data *mnt_data = data;
786 sb->s_fs_info = mnt_data->cifs_sb;
787 return set_anon_super(sb, NULL);
788}
789
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -0600790struct dentry *
Steve Frenchc7c137b2018-06-06 17:59:29 -0500791cifs_smb3_do_mount(struct file_system_type *fs_type,
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -0600792 int flags, struct smb3_fs_context *old_ctx)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793{
794 int rc;
Jan Blunckdb719222010-08-15 22:51:10 +0200795 struct super_block *sb;
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000796 struct cifs_sb_info *cifs_sb = NULL;
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400797 struct cifs_mnt_data mnt_data;
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000798 struct dentry *root;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799
Steve French8c1beb92018-10-07 13:52:18 -0500800 /*
801 * Prints in Kernel / CIFS log the attempted mount operation
802 * If CIFS_DEBUG && cifs_FYI
803 */
Rodrigo Freiref80eaed2018-10-07 12:21:26 -0300804 if (cifsFYI)
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -0600805 cifs_dbg(FYI, "Devname: %s flags: %d\n", old_ctx->UNC, flags);
Rodrigo Freiref80eaed2018-10-07 12:21:26 -0300806 else
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -0600807 cifs_info("Attempting to mount %s\n", old_ctx->UNC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000809 cifs_sb = kzalloc(sizeof(struct cifs_sb_info), GFP_KERNEL);
810 if (cifs_sb == NULL) {
811 root = ERR_PTR(-ENOMEM);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000812 goto out;
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000813 }
814
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000815 cifs_sb->ctx = kzalloc(sizeof(struct smb3_fs_context), GFP_KERNEL);
816 if (!cifs_sb->ctx) {
Al Viro5d3bc602011-06-17 09:17:28 -0400817 root = ERR_PTR(-ENOMEM);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000818 goto out;
Al Viro5d3bc602011-06-17 09:17:28 -0400819 }
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000820 rc = smb3_fs_context_dup(cifs_sb->ctx, old_ctx);
Sachin Prabhu4214ebf2016-07-29 22:38:19 +0100821 if (rc) {
822 root = ERR_PTR(rc);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000823 goto out;
Aurelien Aptela6b50582016-05-25 19:59:09 +0200824 }
825
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000826 rc = cifs_setup_volume_info(cifs_sb->ctx);
827 if (rc) {
828 root = ERR_PTR(rc);
829 goto out;
830 }
831
Ronnie Sahlberg51acd202020-12-14 16:40:24 +1000832 rc = cifs_setup_cifs_sb(cifs_sb);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000833 if (rc) {
834 root = ERR_PTR(rc);
835 goto out;
836 }
837
838 rc = cifs_mount(cifs_sb, cifs_sb->ctx);
Al Viro97d11522011-06-17 09:29:57 -0400839 if (rc) {
Linus Torvalds1751e8a2017-11-27 13:05:09 -0800840 if (!(flags & SB_SILENT))
Joe Perchesf96637b2013-05-04 22:12:25 -0500841 cifs_dbg(VFS, "cifs_mount failed w/return code = %d\n",
842 rc);
Al Viro97d11522011-06-17 09:29:57 -0400843 root = ERR_PTR(rc);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000844 goto out;
Al Viro97d11522011-06-17 09:29:57 -0400845 }
846
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000847 mnt_data.ctx = cifs_sb->ctx;
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400848 mnt_data.cifs_sb = cifs_sb;
849 mnt_data.flags = flags;
850
David Howells9249e172012-06-25 12:55:37 +0100851 /* BB should we make this contingent on mount parm? */
Linus Torvalds1751e8a2017-11-27 13:05:09 -0800852 flags |= SB_NODIRATIME | SB_NOATIME;
David Howells9249e172012-06-25 12:55:37 +0100853
854 sb = sget(fs_type, cifs_match_super, cifs_set_super, flags, &mnt_data);
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000855 if (IS_ERR(sb)) {
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000856 root = ERR_CAST(sb);
Al Viro97d11522011-06-17 09:29:57 -0400857 cifs_umount(cifs_sb);
Ronnie Sahlberg6cf5abb2020-12-16 08:51:33 +1000858 cifs_sb = NULL;
Al Virod757d712011-06-17 09:42:43 -0400859 goto out;
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000860 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
Al Viroee01a142011-06-17 09:47:23 -0400862 if (sb->s_root) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500863 cifs_dbg(FYI, "Use existing superblock\n");
Al Viro97d11522011-06-17 09:29:57 -0400864 cifs_umount(cifs_sb);
Ronnie Sahlberg6cf5abb2020-12-16 08:51:33 +1000865 cifs_sb = NULL;
Al Viro5c4f1ad2011-06-17 09:56:55 -0400866 } else {
Al Viro5c4f1ad2011-06-17 09:56:55 -0400867 rc = cifs_read_super(sb);
868 if (rc) {
869 root = ERR_PTR(rc);
870 goto out_super;
871 }
872
Linus Torvalds1751e8a2017-11-27 13:05:09 -0800873 sb->s_flags |= SB_ACTIVE;
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400874 }
875
Ronnie Sahlberg6cf5abb2020-12-16 08:51:33 +1000876 root = cifs_get_root(cifs_sb ? cifs_sb->ctx : old_ctx, sb);
Al Viro9403c9c2011-06-17 10:02:59 -0400877 if (IS_ERR(root))
Al Virofa18f1b2011-06-17 09:50:44 -0400878 goto out_super;
Al Virofa18f1b2011-06-17 09:50:44 -0400879
Joe Perchesf96637b2013-05-04 22:12:25 -0500880 cifs_dbg(FYI, "dentry root is: %p\n", root);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000881 return root;
Pavel Shilovsky25c7f412011-05-26 23:35:47 +0400882
Pavel Shilovsky641a58d2011-05-26 00:02:16 +0400883out_super:
Pavel Shilovsky641a58d2011-05-26 00:02:16 +0400884 deactivate_locked_super(sb);
Pavel Shilovsky641a58d2011-05-26 00:02:16 +0400885out:
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000886 if (cifs_sb) {
887 kfree(cifs_sb->prepath);
Ronnie Sahlbergc741cba2020-12-14 16:40:16 +1000888 smb3_cleanup_fs_context(cifs_sb->ctx);
Ronnie Sahlbergd17abdf72020-11-10 08:59:26 +1000889 kfree(cifs_sb);
890 }
Pavel Shilovsky724d9f12011-05-05 09:55:12 +0000891 return root;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892}
893
Steve Frenchc7c137b2018-06-06 17:59:29 -0500894
Jeff Layton08bc0352014-05-23 06:50:21 -0400895static ssize_t
896cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
897{
898 ssize_t rc;
899 struct inode *inode = file_inode(iocb->ki_filp);
900
Ross Lagerwall882137c2015-12-02 14:46:07 +0000901 if (iocb->ki_filp->f_flags & O_DIRECT)
902 return cifs_user_readv(iocb, iter);
903
Jeff Layton08bc0352014-05-23 06:50:21 -0400904 rc = cifs_revalidate_mapping(inode);
905 if (rc)
906 return rc;
907
908 return generic_file_read_iter(iocb, iter);
909}
910
Al Viro3dae8752014-04-03 12:05:17 -0400911static ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
Steve French87c89dd2005-11-17 17:03:00 -0800912{
Al Viro496ad9a2013-01-23 17:07:38 -0500913 struct inode *inode = file_inode(iocb->ki_filp);
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000914 struct cifsInodeInfo *cinode = CIFS_I(inode);
Steve French87c89dd2005-11-17 17:03:00 -0800915 ssize_t written;
Pavel Shilovsky72432ff2011-01-24 14:16:35 -0500916 int rc;
Steve French87c89dd2005-11-17 17:03:00 -0800917
Ross Lagerwall882137c2015-12-02 14:46:07 +0000918 if (iocb->ki_filp->f_flags & O_DIRECT) {
919 written = cifs_user_writev(iocb, from);
920 if (written > 0 && CIFS_CACHE_READ(cinode)) {
921 cifs_zap_mapping(inode);
922 cifs_dbg(FYI,
923 "Set no oplock for inode=%p after a write operation\n",
924 inode);
925 cinode->oplock = 0;
926 }
927 return written;
928 }
929
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000930 written = cifs_get_writer(cinode);
931 if (written)
932 return written;
933
Al Viro3dae8752014-04-03 12:05:17 -0400934 written = generic_file_write_iter(iocb, from);
Pavel Shilovsky72432ff2011-01-24 14:16:35 -0500935
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400936 if (CIFS_CACHE_WRITE(CIFS_I(inode)))
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000937 goto out;
Pavel Shilovsky72432ff2011-01-24 14:16:35 -0500938
939 rc = filemap_fdatawrite(inode->i_mapping);
940 if (rc)
Al Viro3dae8752014-04-03 12:05:17 -0400941 cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n",
Joe Perchesf96637b2013-05-04 22:12:25 -0500942 rc, inode);
Pavel Shilovsky72432ff2011-01-24 14:16:35 -0500943
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000944out:
945 cifs_put_writer(cinode);
Steve French87c89dd2005-11-17 17:03:00 -0800946 return written;
947}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948
Andrew Morton965c8e52012-12-17 15:59:39 -0800949static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
Steve Frenchc32a0b62006-01-12 14:41:28 -0800950{
Ronnie Sahlbergdece44e2019-05-15 07:17:02 +1000951 struct cifsFileInfo *cfile = file->private_data;
952 struct cifs_tcon *tcon;
953
Josef Bacik06222e42011-07-18 13:21:38 -0400954 /*
Andrew Morton965c8e52012-12-17 15:59:39 -0800955 * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
Josef Bacik06222e42011-07-18 13:21:38 -0400956 * the cached file length
957 */
Andrew Morton965c8e52012-12-17 15:59:39 -0800958 if (whence != SEEK_SET && whence != SEEK_CUR) {
Pavel Shilovsky6feb9892011-04-07 18:18:11 +0400959 int rc;
Al Viro496ad9a2013-01-23 17:07:38 -0500960 struct inode *inode = file_inode(file);
Steve French030e9d82007-02-01 04:27:59 +0000961
Pavel Shilovsky6feb9892011-04-07 18:18:11 +0400962 /*
963 * We need to be sure that all dirty pages are written and the
964 * server has the newest file length.
965 */
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400966 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
Pavel Shilovsky6feb9892011-04-07 18:18:11 +0400967 inode->i_mapping->nrpages != 0) {
968 rc = filemap_fdatawait(inode->i_mapping);
Steve French156ecb22011-05-20 17:00:01 +0000969 if (rc) {
970 mapping_set_error(inode->i_mapping, rc);
971 return rc;
972 }
Pavel Shilovsky6feb9892011-04-07 18:18:11 +0400973 }
974 /*
975 * Some applications poll for the file length in this strange
976 * way so we must seek to end on non-oplocked files by
977 * setting the revalidate time to zero.
978 */
979 CIFS_I(inode)->time = 0;
Steve French030e9d82007-02-01 04:27:59 +0000980
Pavel Shilovsky6feb9892011-04-07 18:18:11 +0400981 rc = cifs_revalidate_file_attr(file);
982 if (rc < 0)
983 return (loff_t)rc;
Steve Frenchc32a0b62006-01-12 14:41:28 -0800984 }
Ronnie Sahlbergdece44e2019-05-15 07:17:02 +1000985 if (cfile && cfile->tlink) {
986 tcon = tlink_tcon(cfile->tlink);
987 if (tcon->ses->server->ops->llseek)
988 return tcon->ses->server->ops->llseek(file, tcon,
989 offset, whence);
990 }
Andrew Morton965c8e52012-12-17 15:59:39 -0800991 return generic_file_llseek(file, offset, whence);
Steve Frenchc32a0b62006-01-12 14:41:28 -0800992}
993
Jeff Laytone6f5c782014-08-22 10:40:25 -0400994static int
995cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv)
Steve French84210e92008-10-23 04:42:37 +0000996{
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400997 /*
998 * Note that this is called by vfs setlease with i_lock held to
999 * protect *lease from going away.
1000 */
Al Viro496ad9a2013-01-23 17:07:38 -05001001 struct inode *inode = file_inode(file);
Jeff Laytonba00ba642010-09-20 16:01:31 -07001002 struct cifsFileInfo *cfile = file->private_data;
Steve French84210e92008-10-23 04:42:37 +00001003
1004 if (!(S_ISREG(inode->i_mode)))
1005 return -EINVAL;
1006
Jeff Layton02440802014-08-09 10:16:44 -04001007 /* Check if file is oplocked if this is request for new lease */
1008 if (arg == F_UNLCK ||
1009 ((arg == F_RDLCK) && CIFS_CACHE_READ(CIFS_I(inode))) ||
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001010 ((arg == F_WRLCK) && CIFS_CACHE_WRITE(CIFS_I(inode))))
Jeff Laytone6f5c782014-08-22 10:40:25 -04001011 return generic_setlease(file, arg, lease, priv);
Jeff Layton13cfb732010-09-29 19:51:11 -04001012 else if (tlink_tcon(cfile->tlink)->local_lease &&
Pavel Shilovsky18cceb62013-09-05 13:01:06 +04001013 !CIFS_CACHE_READ(CIFS_I(inode)))
1014 /*
1015 * If the server claims to support oplock on this file, then we
1016 * still need to check oplock even if the local_lease mount
1017 * option is set, but there are servers which do not support
1018 * oplock for which this mount option may be useful if the user
1019 * knows that the file won't be changed on the server by anyone
1020 * else.
1021 */
Jeff Laytone6f5c782014-08-22 10:40:25 -04001022 return generic_setlease(file, arg, lease, priv);
Christoph Hellwig51ee4b82010-10-31 08:35:10 -04001023 else
Steve French84210e92008-10-23 04:42:37 +00001024 return -EAGAIN;
1025}
Steve French84210e92008-10-23 04:42:37 +00001026
Igor Mammedove6ab1582008-01-11 01:49:48 +00001027struct file_system_type cifs_fs_type = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 .owner = THIS_MODULE,
1029 .name = "cifs",
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -06001030 .init_fs_context = smb3_init_fs_context,
1031 .parameters = smb3_fs_parameters,
Al Viro6d686172011-06-17 08:34:57 -04001032 .kill_sb = cifs_kill_sb,
Steve Frenchc7e9f782020-02-25 18:08:54 -06001033 .fs_flags = FS_RENAME_DOES_D_MOVE,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034};
Eric W. Biederman3e64fe52013-03-11 07:05:42 -07001035MODULE_ALIAS_FS("cifs");
Steve French49218b42018-05-23 21:44:53 -05001036
1037static struct file_system_type smb3_fs_type = {
1038 .owner = THIS_MODULE,
1039 .name = "smb3",
Ronnie Sahlberg24e0a1e2020-12-10 00:06:02 -06001040 .init_fs_context = smb3_init_fs_context,
1041 .parameters = smb3_fs_parameters,
Steve French49218b42018-05-23 21:44:53 -05001042 .kill_sb = cifs_kill_sb,
Steve Frenchc7e9f782020-02-25 18:08:54 -06001043 .fs_flags = FS_RENAME_DOES_D_MOVE,
Steve French49218b42018-05-23 21:44:53 -05001044};
1045MODULE_ALIAS_FS("smb3");
1046MODULE_ALIAS("smb3");
1047
Arjan van de Ven754661f2007-02-12 00:55:38 -08001048const struct inode_operations cifs_dir_inode_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049 .create = cifs_create,
Miklos Szeredid2c12712012-06-05 15:10:23 +02001050 .atomic_open = cifs_atomic_open,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 .lookup = cifs_lookup,
1052 .getattr = cifs_getattr,
1053 .unlink = cifs_unlink,
1054 .link = cifs_hardlink,
1055 .mkdir = cifs_mkdir,
1056 .rmdir = cifs_rmdir,
Miklos Szeredi2773bf02016-09-27 11:03:58 +02001057 .rename = cifs_rename2,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 .permission = cifs_permission,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 .setattr = cifs_setattr,
1060 .symlink = cifs_symlink,
1061 .mknod = cifs_mknod,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001062 .listxattr = cifs_listxattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063};
1064
Arjan van de Ven754661f2007-02-12 00:55:38 -08001065const struct inode_operations cifs_file_inode_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 .setattr = cifs_setattr,
Steve French48a77aa2016-05-18 20:48:32 -05001067 .getattr = cifs_getattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 .permission = cifs_permission,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069 .listxattr = cifs_listxattr,
Ronnie Sahlberg2f3ebab2019-04-25 16:45:29 +10001070 .fiemap = cifs_fiemap,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071};
1072
Arjan van de Ven754661f2007-02-12 00:55:38 -08001073const struct inode_operations cifs_symlink_inode_ops = {
Al Viro6b255392015-11-17 10:20:54 -05001074 .get_link = cifs_get_link,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075 .permission = cifs_permission,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076 .listxattr = cifs_listxattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077};
1078
Darrick J. Wong42ec3d42018-10-30 10:41:49 +11001079static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
1080 struct file *dst_file, loff_t destoff, loff_t len,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001081 unsigned int remap_flags)
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001082{
1083 struct inode *src_inode = file_inode(src_file);
1084 struct inode *target_inode = file_inode(dst_file);
1085 struct cifsFileInfo *smb_file_src = src_file->private_data;
Colin Ian King8c6c9bed82018-11-01 13:14:30 +00001086 struct cifsFileInfo *smb_file_target;
1087 struct cifs_tcon *target_tcon;
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001088 unsigned int xid;
1089 int rc;
1090
Xiaoli Fengb073a082019-03-16 12:11:54 +08001091 if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001092 return -EINVAL;
1093
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001094 cifs_dbg(FYI, "clone range\n");
1095
1096 xid = get_xid();
1097
1098 if (!src_file->private_data || !dst_file->private_data) {
1099 rc = -EBADF;
1100 cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
1101 goto out;
1102 }
1103
Colin Ian King8c6c9bed82018-11-01 13:14:30 +00001104 smb_file_target = dst_file->private_data;
1105 target_tcon = tlink_tcon(smb_file_target->tlink);
1106
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001107 /*
1108 * Note: cifs case is easier than btrfs since server responsible for
1109 * checks for proper open modes and file type and if it wants
1110 * server could even support copy of range where source = target
1111 */
1112 lock_two_nondirectories(target_inode, src_inode);
1113
1114 if (len == 0)
1115 len = src_inode->i_size - off;
1116
1117 cifs_dbg(FYI, "about to flush pages\n");
1118 /* should we flush first and last page first */
1119 truncate_inode_pages_range(&target_inode->i_data, destoff,
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001120 PAGE_ALIGN(destoff + len)-1);
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001121
1122 if (target_tcon->ses->server->ops->duplicate_extents)
1123 rc = target_tcon->ses->server->ops->duplicate_extents(xid,
1124 smb_file_src, smb_file_target, off, len, destoff);
1125 else
1126 rc = -EOPNOTSUPP;
1127
1128 /* force revalidate of size and timestamps of target file now
1129 that target is updated on the server */
1130 CIFS_I(target_inode)->time = 0;
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001131 /* although unlocking in the reverse order from locking is not
1132 strictly necessary here it is a little cleaner to be consistent */
1133 unlock_two_nondirectories(src_inode, target_inode);
1134out:
1135 free_xid(xid);
Darrick J. Wong42ec3d42018-10-30 10:41:49 +11001136 return rc < 0 ? rc : len;
Christoph Hellwig04b38d62015-12-03 12:59:50 +01001137}
1138
Sachin Prabhu620d8742017-02-10 16:03:51 +05301139ssize_t cifs_file_copychunk_range(unsigned int xid,
1140 struct file *src_file, loff_t off,
1141 struct file *dst_file, loff_t destoff,
1142 size_t len, unsigned int flags)
1143{
1144 struct inode *src_inode = file_inode(src_file);
1145 struct inode *target_inode = file_inode(dst_file);
1146 struct cifsFileInfo *smb_file_src;
1147 struct cifsFileInfo *smb_file_target;
1148 struct cifs_tcon *src_tcon;
1149 struct cifs_tcon *target_tcon;
1150 ssize_t rc;
1151
1152 cifs_dbg(FYI, "copychunk range\n");
1153
Sachin Prabhu620d8742017-02-10 16:03:51 +05301154 if (!src_file->private_data || !dst_file->private_data) {
1155 rc = -EBADF;
1156 cifs_dbg(VFS, "missing cifsFileInfo on copy range src file\n");
1157 goto out;
1158 }
1159
1160 rc = -EXDEV;
1161 smb_file_target = dst_file->private_data;
1162 smb_file_src = src_file->private_data;
1163 src_tcon = tlink_tcon(smb_file_src->tlink);
1164 target_tcon = tlink_tcon(smb_file_target->tlink);
1165
1166 if (src_tcon->ses != target_tcon->ses) {
1167 cifs_dbg(VFS, "source and target of copy not on same server\n");
1168 goto out;
1169 }
1170
Amir Goldsteinbf3c90e2019-06-10 20:36:57 +03001171 rc = -EOPNOTSUPP;
1172 if (!target_tcon->ses->server->ops->copychunk_range)
1173 goto out;
1174
Sachin Prabhu620d8742017-02-10 16:03:51 +05301175 /*
1176 * Note: cifs case is easier than btrfs since server responsible for
1177 * checks for proper open modes and file type and if it wants
1178 * server could even support copy of range where source = target
1179 */
1180 lock_two_nondirectories(target_inode, src_inode);
1181
1182 cifs_dbg(FYI, "about to flush pages\n");
1183 /* should we flush first and last page first */
1184 truncate_inode_pages(&target_inode->i_data, 0);
1185
Amir Goldsteinbf3c90e2019-06-10 20:36:57 +03001186 rc = file_modified(dst_file);
1187 if (!rc)
Sachin Prabhu620d8742017-02-10 16:03:51 +05301188 rc = target_tcon->ses->server->ops->copychunk_range(xid,
1189 smb_file_src, smb_file_target, off, len, destoff);
Amir Goldsteinbf3c90e2019-06-10 20:36:57 +03001190
1191 file_accessed(src_file);
Sachin Prabhu620d8742017-02-10 16:03:51 +05301192
1193 /* force revalidate of size and timestamps of target file now
1194 * that target is updated on the server
1195 */
1196 CIFS_I(target_inode)->time = 0;
1197 /* although unlocking in the reverse order from locking is not
1198 * strictly necessary here it is a little cleaner to be consistent
1199 */
1200 unlock_two_nondirectories(src_inode, target_inode);
1201
1202out:
1203 return rc;
1204}
1205
Steve French6e70c262018-05-10 10:59:37 -05001206/*
1207 * Directory operations under CIFS/SMB2/SMB3 are synchronous, so fsync()
1208 * is a dummy operation.
1209 */
1210static int cifs_dir_fsync(struct file *file, loff_t start, loff_t end, int datasync)
1211{
1212 cifs_dbg(FYI, "Sync directory - name: %pD datasync: 0x%x\n",
1213 file, datasync);
1214
1215 return 0;
1216}
1217
Sachin Prabhu620d8742017-02-10 16:03:51 +05301218static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off,
1219 struct file *dst_file, loff_t destoff,
1220 size_t len, unsigned int flags)
1221{
1222 unsigned int xid = get_xid();
1223 ssize_t rc;
Steve French4e8aea32020-04-09 21:42:18 -05001224 struct cifsFileInfo *cfile = dst_file->private_data;
1225
1226 if (cfile->swapfile)
1227 return -EOPNOTSUPP;
Sachin Prabhu620d8742017-02-10 16:03:51 +05301228
1229 rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff,
1230 len, flags);
1231 free_xid(xid);
Dave Chinner64bf5ff2019-06-05 08:04:47 -07001232
Amir Goldstein5dae2222019-06-05 08:04:50 -07001233 if (rc == -EOPNOTSUPP || rc == -EXDEV)
Dave Chinner64bf5ff2019-06-05 08:04:47 -07001234 rc = generic_copy_file_range(src_file, off, dst_file,
1235 destoff, len, flags);
Sachin Prabhu620d8742017-02-10 16:03:51 +05301236 return rc;
1237}
1238
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -08001239const struct file_operations cifs_file_ops = {
Jeff Layton08bc0352014-05-23 06:50:21 -04001240 .read_iter = cifs_loose_read_iter,
Al Viro3dae8752014-04-03 12:05:17 -04001241 .write_iter = cifs_file_write_iter,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242 .open = cifs_open,
1243 .release = cifs_close,
1244 .lock = cifs_lock,
Steve Frenchd0677992019-07-16 18:55:38 -05001245 .flock = cifs_flock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 .fsync = cifs_fsync,
1247 .flush = cifs_flush,
1248 .mmap = cifs_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +02001249 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001250 .splice_write = iter_file_splice_write,
Steve Frenchc32a0b62006-01-12 14:41:28 -08001251 .llseek = cifs_llseek,
Steve Frenchf9ddcca2008-05-15 05:51:55 +00001252 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301253 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001254 .remap_file_range = cifs_remap_file_range,
Steve French84210e92008-10-23 04:42:37 +00001255 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001256 .fallocate = cifs_fallocate,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257};
1258
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001259const struct file_operations cifs_file_strict_ops = {
Al Viroe6a7bcb2014-04-02 19:53:36 -04001260 .read_iter = cifs_strict_readv,
Al Viro3dae8752014-04-03 12:05:17 -04001261 .write_iter = cifs_strict_writev,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001262 .open = cifs_open,
1263 .release = cifs_close,
1264 .lock = cifs_lock,
Steve Frenchd0677992019-07-16 18:55:38 -05001265 .flock = cifs_flock,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001266 .fsync = cifs_strict_fsync,
1267 .flush = cifs_flush,
Pavel Shilovsky7a6a19b2010-12-14 11:29:51 +03001268 .mmap = cifs_file_strict_mmap,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001269 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001270 .splice_write = iter_file_splice_write,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001271 .llseek = cifs_llseek,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001272 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301273 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001274 .remap_file_range = cifs_remap_file_range,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001275 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001276 .fallocate = cifs_fallocate,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001277};
1278
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -08001279const struct file_operations cifs_file_direct_ops = {
Long Libe4eb682018-10-31 22:13:11 +00001280 .read_iter = cifs_direct_readv,
1281 .write_iter = cifs_direct_writev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 .open = cifs_open,
1283 .release = cifs_close,
1284 .lock = cifs_lock,
Steve Frenchd0677992019-07-16 18:55:38 -05001285 .flock = cifs_flock,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286 .fsync = cifs_fsync,
1287 .flush = cifs_flush,
Steve Frencha994b8f2009-12-07 05:44:46 +00001288 .mmap = cifs_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +02001289 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001290 .splice_write = iter_file_splice_write,
Steve Frenchf9ddcca2008-05-15 05:51:55 +00001291 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301292 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001293 .remap_file_range = cifs_remap_file_range,
Steve Frenchc32a0b62006-01-12 14:41:28 -08001294 .llseek = cifs_llseek,
Steve French84210e92008-10-23 04:42:37 +00001295 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001296 .fallocate = cifs_fallocate,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297};
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001298
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -08001299const struct file_operations cifs_file_nobrl_ops = {
Jeff Layton08bc0352014-05-23 06:50:21 -04001300 .read_iter = cifs_loose_read_iter,
Al Viro3dae8752014-04-03 12:05:17 -04001301 .write_iter = cifs_file_write_iter,
Steve French87c89dd2005-11-17 17:03:00 -08001302 .open = cifs_open,
1303 .release = cifs_close,
1304 .fsync = cifs_fsync,
1305 .flush = cifs_flush,
1306 .mmap = cifs_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +02001307 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001308 .splice_write = iter_file_splice_write,
Steve Frenchc32a0b62006-01-12 14:41:28 -08001309 .llseek = cifs_llseek,
Steve Frenchf9ddcca2008-05-15 05:51:55 +00001310 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301311 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001312 .remap_file_range = cifs_remap_file_range,
Steve French84210e92008-10-23 04:42:37 +00001313 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001314 .fallocate = cifs_fallocate,
Steve French8b94bcb2005-11-11 11:41:00 -08001315};
1316
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001317const struct file_operations cifs_file_strict_nobrl_ops = {
Al Viroe6a7bcb2014-04-02 19:53:36 -04001318 .read_iter = cifs_strict_readv,
Al Viro3dae8752014-04-03 12:05:17 -04001319 .write_iter = cifs_strict_writev,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001320 .open = cifs_open,
1321 .release = cifs_close,
1322 .fsync = cifs_strict_fsync,
1323 .flush = cifs_flush,
Pavel Shilovsky7a6a19b2010-12-14 11:29:51 +03001324 .mmap = cifs_file_strict_mmap,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001325 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001326 .splice_write = iter_file_splice_write,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001327 .llseek = cifs_llseek,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001328 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301329 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001330 .remap_file_range = cifs_remap_file_range,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001331 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001332 .fallocate = cifs_fallocate,
Pavel Shilovsky8be7e6b2010-12-12 13:11:13 +03001333};
1334
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -08001335const struct file_operations cifs_file_direct_nobrl_ops = {
Long Libe4eb682018-10-31 22:13:11 +00001336 .read_iter = cifs_direct_readv,
1337 .write_iter = cifs_direct_writev,
Steve French87c89dd2005-11-17 17:03:00 -08001338 .open = cifs_open,
1339 .release = cifs_close,
1340 .fsync = cifs_fsync,
1341 .flush = cifs_flush,
Pavel Shilovsky810627a02010-03-27 02:00:49 +00001342 .mmap = cifs_file_mmap,
Jens Axboe5ffc4ef2007-06-01 11:49:19 +02001343 .splice_read = generic_file_splice_read,
Andrés Soutocd1aca22017-12-28 14:23:08 +01001344 .splice_write = iter_file_splice_write,
Steve Frenchf9ddcca2008-05-15 05:51:55 +00001345 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301346 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001347 .remap_file_range = cifs_remap_file_range,
Steve Frenchc32a0b62006-01-12 14:41:28 -08001348 .llseek = cifs_llseek,
Steve French84210e92008-10-23 04:42:37 +00001349 .setlease = cifs_setlease,
Steve French31742c52014-08-17 08:38:47 -05001350 .fallocate = cifs_fallocate,
Steve French8b94bcb2005-11-11 11:41:00 -08001351};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -08001353const struct file_operations cifs_dir_ops = {
Al Viro3125d262016-04-20 17:40:47 -04001354 .iterate_shared = cifs_readdir,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 .release = cifs_closedir,
1356 .read = generic_read_dir,
Steve Frenchf9ddcca2008-05-15 05:51:55 +00001357 .unlocked_ioctl = cifs_ioctl,
Sachin Prabhu620d8742017-02-10 16:03:51 +05301358 .copy_file_range = cifs_copy_file_range,
Darrick J. Wong2e5dfc92018-10-30 10:41:21 +11001359 .remap_file_range = cifs_remap_file_range,
Christoph Hellwig3222a3e2008-09-03 21:53:01 +02001360 .llseek = generic_file_llseek,
Steve French6e70c262018-05-10 10:59:37 -05001361 .fsync = cifs_dir_fsync,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362};
1363
1364static void
Alexey Dobriyan51cc5062008-07-25 19:45:34 -07001365cifs_init_once(void *inode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366{
1367 struct cifsInodeInfo *cifsi = inode;
1368
Christoph Lametera35afb82007-05-16 22:10:57 -07001369 inode_init_once(&cifsi->vfs_inode);
Pavel Shilovsky1b4b55a2012-09-19 06:22:44 -07001370 init_rwsem(&cifsi->lock_sem);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001371}
1372
Fabian Frederick9ee108b2014-04-03 14:46:30 -07001373static int __init
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374cifs_init_inodecache(void)
1375{
1376 cifs_inode_cachep = kmem_cache_create("cifs_inode_cache",
Steve French26f57362007-08-30 22:09:15 +00001377 sizeof(struct cifsInodeInfo),
Paul Jacksonfffb60f2006-03-24 03:16:06 -08001378 0, (SLAB_RECLAIM_ACCOUNT|
Vladimir Davydov5d097052016-01-14 15:18:21 -08001379 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
Paul Mundt20c2df82007-07-20 10:11:58 +09001380 cifs_init_once);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381 if (cifs_inode_cachep == NULL)
1382 return -ENOMEM;
1383
1384 return 0;
1385}
1386
1387static void
1388cifs_destroy_inodecache(void)
1389{
Kirill A. Shutemov8c0a8532012-09-26 11:33:07 +10001390 /*
1391 * Make sure all delayed rcu free inodes are flushed before we
1392 * destroy cache.
1393 */
1394 rcu_barrier();
Alexey Dobriyan1a1d92c2006-09-27 01:49:40 -07001395 kmem_cache_destroy(cifs_inode_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396}
1397
1398static int
1399cifs_init_request_bufs(void)
1400{
Pavel Shilovsky3792c172012-01-12 22:40:50 +04001401 /*
1402 * SMB2 maximum header size is bigger than CIFS one - no problems to
1403 * allocate some more bytes for CIFS.
1404 */
Steve French2a38e122017-07-08 18:48:15 -05001405 size_t max_hdr_size = MAX_SMB2_HDR_SIZE;
1406
Steve French4523cc32007-04-30 20:13:06 +00001407 if (CIFSMaxBufSize < 8192) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408 /* Buffer size can not be smaller than 2 * PATH_MAX since maximum
1409 Unicode path name has to fit in any SMB/CIFS path based frames */
1410 CIFSMaxBufSize = 8192;
1411 } else if (CIFSMaxBufSize > 1024*127) {
1412 CIFSMaxBufSize = 1024 * 127;
1413 } else {
1414 CIFSMaxBufSize &= 0x1FE00; /* Round size to even 512 byte mult*/
1415 }
Joe Perchesf96637b2013-05-04 22:12:25 -05001416/*
1417 cifs_dbg(VFS, "CIFSMaxBufSize %d 0x%x\n",
1418 CIFSMaxBufSize, CIFSMaxBufSize);
1419*/
David Windsorde046442017-06-10 22:50:33 -04001420 cifs_req_cachep = kmem_cache_create_usercopy("cifs_request",
Pavel Shilovsky3792c172012-01-12 22:40:50 +04001421 CIFSMaxBufSize + max_hdr_size, 0,
David Windsorde046442017-06-10 22:50:33 -04001422 SLAB_HWCACHE_ALIGN, 0,
1423 CIFSMaxBufSize + max_hdr_size,
1424 NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 if (cifs_req_cachep == NULL)
1426 return -ENOMEM;
1427
Steve French4523cc32007-04-30 20:13:06 +00001428 if (cifs_min_rcv < 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 cifs_min_rcv = 1;
1430 else if (cifs_min_rcv > 64) {
1431 cifs_min_rcv = 64;
Joe Perchesf96637b2013-05-04 22:12:25 -05001432 cifs_dbg(VFS, "cifs_min_rcv set to maximum (64)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 }
1434
Matthew Dobson93d23412006-03-26 01:37:50 -08001435 cifs_req_poolp = mempool_create_slab_pool(cifs_min_rcv,
1436 cifs_req_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437
Steve French4523cc32007-04-30 20:13:06 +00001438 if (cifs_req_poolp == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 kmem_cache_destroy(cifs_req_cachep);
1440 return -ENOMEM;
1441 }
Steve Frenchec637e32005-12-12 20:53:18 -08001442 /* MAX_CIFS_SMALL_BUFFER_SIZE bytes is enough for most SMB responses and
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 almost all handle based requests (but not write response, nor is it
1444 sufficient for path based requests). A smaller size would have
Steve French50c2f752007-07-13 00:33:32 +00001445 been more efficient (compacting multiple slab items on one 4k page)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001446 for the case in which debug was on, but this larger size allows
1447 more SMBs to use small buffer alloc and is still much more
Steve French6dc0f872007-07-06 23:13:06 +00001448 efficient to alloc 1 per page off the slab compared to 17K (5page)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 alloc of large cifs buffers even when page debugging is on */
David Windsorde046442017-06-10 22:50:33 -04001450 cifs_sm_req_cachep = kmem_cache_create_usercopy("cifs_small_rq",
Steve French6dc0f872007-07-06 23:13:06 +00001451 MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
David Windsorde046442017-06-10 22:50:33 -04001452 0, MAX_CIFS_SMALL_BUFFER_SIZE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453 if (cifs_sm_req_cachep == NULL) {
1454 mempool_destroy(cifs_req_poolp);
1455 kmem_cache_destroy(cifs_req_cachep);
Steve French6dc0f872007-07-06 23:13:06 +00001456 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 }
1458
Steve French4523cc32007-04-30 20:13:06 +00001459 if (cifs_min_small < 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460 cifs_min_small = 2;
1461 else if (cifs_min_small > 256) {
1462 cifs_min_small = 256;
Joe Perchesf96637b2013-05-04 22:12:25 -05001463 cifs_dbg(FYI, "cifs_min_small set to maximum (256)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 }
1465
Matthew Dobson93d23412006-03-26 01:37:50 -08001466 cifs_sm_req_poolp = mempool_create_slab_pool(cifs_min_small,
1467 cifs_sm_req_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468
Steve French4523cc32007-04-30 20:13:06 +00001469 if (cifs_sm_req_poolp == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 mempool_destroy(cifs_req_poolp);
1471 kmem_cache_destroy(cifs_req_cachep);
1472 kmem_cache_destroy(cifs_sm_req_cachep);
1473 return -ENOMEM;
1474 }
1475
1476 return 0;
1477}
1478
1479static void
1480cifs_destroy_request_bufs(void)
1481{
1482 mempool_destroy(cifs_req_poolp);
Alexey Dobriyan1a1d92c2006-09-27 01:49:40 -07001483 kmem_cache_destroy(cifs_req_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484 mempool_destroy(cifs_sm_req_poolp);
Alexey Dobriyan1a1d92c2006-09-27 01:49:40 -07001485 kmem_cache_destroy(cifs_sm_req_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486}
1487
1488static int
1489cifs_init_mids(void)
1490{
1491 cifs_mid_cachep = kmem_cache_create("cifs_mpx_ids",
Steve French26f57362007-08-30 22:09:15 +00001492 sizeof(struct mid_q_entry), 0,
1493 SLAB_HWCACHE_ALIGN, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 if (cifs_mid_cachep == NULL)
1495 return -ENOMEM;
1496
Matthew Dobson93d23412006-03-26 01:37:50 -08001497 /* 3 is a reasonable minimum number of simultaneous operations */
1498 cifs_mid_poolp = mempool_create_slab_pool(3, cifs_mid_cachep);
Steve French4523cc32007-04-30 20:13:06 +00001499 if (cifs_mid_poolp == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500 kmem_cache_destroy(cifs_mid_cachep);
1501 return -ENOMEM;
1502 }
1503
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 return 0;
1505}
1506
1507static void
1508cifs_destroy_mids(void)
1509{
1510 mempool_destroy(cifs_mid_poolp);
Alexey Dobriyan1a1d92c2006-09-27 01:49:40 -07001511 kmem_cache_destroy(cifs_mid_cachep);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001512}
1513
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514static int __init
1515init_cifs(void)
1516{
1517 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518 cifs_proc_init();
Jeff Laytone7ddee92008-11-14 13:44:38 -05001519 INIT_LIST_HEAD(&cifs_tcp_ses_list);
Steve French0eff0e22011-02-24 05:39:23 +00001520#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
Steve French4ca9c192005-10-10 19:52:13 -07001521 INIT_LIST_HEAD(&GlobalDnotifyReqList);
1522 INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
Steve French0eff0e22011-02-24 05:39:23 +00001523#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524/*
1525 * Initialize Global counters
1526 */
1527 atomic_set(&sesInfoAllocCount, 0);
1528 atomic_set(&tconInfoAllocCount, 0);
Steve French6dc0f872007-07-06 23:13:06 +00001529 atomic_set(&tcpSesAllocCount, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530 atomic_set(&tcpSesReconnectCount, 0);
1531 atomic_set(&tconInfoReconnectCount, 0);
1532
1533 atomic_set(&bufAllocCount, 0);
Steve French4498eed52005-12-03 13:58:57 -08001534 atomic_set(&smBufAllocCount, 0);
1535#ifdef CONFIG_CIFS_STATS2
1536 atomic_set(&totBufAllocCount, 0);
1537 atomic_set(&totSmBufAllocCount, 0);
Steve French00778e22018-09-18 14:05:18 -05001538 if (slow_rsp_threshold < 1)
1539 cifs_dbg(FYI, "slow_response_threshold msgs disabled\n");
1540 else if (slow_rsp_threshold > 32767)
1541 cifs_dbg(VFS,
1542 "slow response threshold set higher than recommended (0 to 32767)\n");
Steve French4498eed52005-12-03 13:58:57 -08001543#endif /* CONFIG_CIFS_STATS2 */
1544
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545 atomic_set(&midCount, 0);
1546 GlobalCurrentXid = 0;
1547 GlobalTotalActiveXid = 0;
1548 GlobalMaxActiveXid = 0;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +05301549 spin_lock_init(&cifs_tcp_ses_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001550 spin_lock_init(&GlobalMid_Lock);
1551
Jason A. Donenfeld51b08172017-06-07 20:42:50 -04001552 cifs_lock_secret = get_random_u32();
Jeff Layton3d224622016-05-24 06:27:44 -04001553
Steve French4523cc32007-04-30 20:13:06 +00001554 if (cifs_max_pending < 2) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555 cifs_max_pending = 2;
Joe Perchesf96637b2013-05-04 22:12:25 -05001556 cifs_dbg(FYI, "cifs_max_pending set to min of 2\n");
Pavel Shilovsky10b9b982012-03-20 12:55:09 +03001557 } else if (cifs_max_pending > CIFS_MAX_REQ) {
1558 cifs_max_pending = CIFS_MAX_REQ;
Joe Perchesf96637b2013-05-04 22:12:25 -05001559 cifs_dbg(FYI, "cifs_max_pending set to max of %u\n",
1560 CIFS_MAX_REQ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001561 }
1562
Jeff Laytonda472fc2012-03-23 14:40:53 -04001563 cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
1564 if (!cifsiod_wq) {
1565 rc = -ENOMEM;
1566 goto out_clean_proc;
1567 }
1568
Steve French35cf94a2019-09-07 01:09:49 -05001569 /*
Steve French10328c42019-09-09 13:30:15 -05001570 * Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3)
1571 * so that we don't launch too many worker threads but
Mauro Carvalho Chehab0ac624f2019-09-24 10:01:28 -03001572 * Documentation/core-api/workqueue.rst recommends setting it to 0
Steve French35cf94a2019-09-07 01:09:49 -05001573 */
Steve French10328c42019-09-09 13:30:15 -05001574
1575 /* WQ_UNBOUND allows decrypt tasks to run on any CPU */
Steve French35cf94a2019-09-07 01:09:49 -05001576 decrypt_wq = alloc_workqueue("smb3decryptd",
Steve French10328c42019-09-09 13:30:15 -05001577 WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
Steve French35cf94a2019-09-07 01:09:49 -05001578 if (!decrypt_wq) {
1579 rc = -ENOMEM;
1580 goto out_destroy_cifsiod_wq;
1581 }
1582
Ronnie Sahlberg32546a92019-11-03 13:06:37 +10001583 fileinfo_put_wq = alloc_workqueue("cifsfileinfoput",
1584 WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
1585 if (!fileinfo_put_wq) {
1586 rc = -ENOMEM;
1587 goto out_destroy_decrypt_wq;
1588 }
1589
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001590 cifsoplockd_wq = alloc_workqueue("cifsoplockd",
1591 WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
1592 if (!cifsoplockd_wq) {
1593 rc = -ENOMEM;
Ronnie Sahlberg32546a92019-11-03 13:06:37 +10001594 goto out_destroy_fileinfo_put_wq;
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001595 }
1596
Suresh Jayaramanf579cf32010-07-05 18:11:50 +05301597 rc = cifs_fscache_register();
1598 if (rc)
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001599 goto out_destroy_cifsoplockd_wq;
Suresh Jayaramanf579cf32010-07-05 18:11:50 +05301600
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601 rc = cifs_init_inodecache();
Steve French45af7a02006-04-21 22:52:25 +00001602 if (rc)
Steve Frenchd3bf5222010-09-22 19:15:36 +00001603 goto out_unreg_fscache;
Steve French45af7a02006-04-21 22:52:25 +00001604
1605 rc = cifs_init_mids();
1606 if (rc)
1607 goto out_destroy_inodecache;
1608
1609 rc = cifs_init_request_bufs();
1610 if (rc)
1611 goto out_destroy_mids;
1612
Paulo Alcantara1c780222018-11-14 16:24:03 -02001613#ifdef CONFIG_CIFS_DFS_UPCALL
1614 rc = dfs_cache_init();
1615 if (rc)
1616 goto out_destroy_request_bufs;
1617#endif /* CONFIG_CIFS_DFS_UPCALL */
Jeff Layton84a15b92007-11-03 05:02:24 +00001618#ifdef CONFIG_CIFS_UPCALL
Sachin Prabhub74cb9a2016-05-17 18:20:13 -05001619 rc = init_cifs_spnego();
Jeff Layton84a15b92007-11-03 05:02:24 +00001620 if (rc)
Paulo Alcantara1c780222018-11-14 16:24:03 -02001621 goto out_destroy_dfs_cache;
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001622#endif /* CONFIG_CIFS_UPCALL */
Samuel Cabrero06f08da2020-11-30 19:02:49 +01001623#ifdef CONFIG_CIFS_SWN_UPCALL
1624 rc = cifs_genl_init();
1625 if (rc)
1626 goto out_register_key_type;
1627#endif /* CONFIG_CIFS_SWN_UPCALL */
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001628
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001629 rc = init_cifs_idmap();
1630 if (rc)
Samuel Cabrero06f08da2020-11-30 19:02:49 +01001631 goto out_cifs_swn_init;
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001632
1633 rc = register_filesystem(&cifs_fs_type);
1634 if (rc)
Shirish Pargaonkarc4aca0c2011-05-06 02:35:00 -05001635 goto out_init_cifs_idmap;
Steve French45af7a02006-04-21 22:52:25 +00001636
Steve French49218b42018-05-23 21:44:53 -05001637 rc = register_filesystem(&smb3_fs_type);
1638 if (rc) {
1639 unregister_filesystem(&cifs_fs_type);
1640 goto out_init_cifs_idmap;
1641 }
1642
Steve French45af7a02006-04-21 22:52:25 +00001643 return 0;
1644
Shirish Pargaonkarc4aca0c2011-05-06 02:35:00 -05001645out_init_cifs_idmap:
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001646 exit_cifs_idmap();
Samuel Cabrero06f08da2020-11-30 19:02:49 +01001647out_cifs_swn_init:
1648#ifdef CONFIG_CIFS_SWN_UPCALL
1649 cifs_genl_exit();
Shirish Pargaonkarc4aca0c2011-05-06 02:35:00 -05001650out_register_key_type:
Samuel Cabrero06f08da2020-11-30 19:02:49 +01001651#endif
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001652#ifdef CONFIG_CIFS_UPCALL
Sachin Prabhub74cb9a2016-05-17 18:20:13 -05001653 exit_cifs_spnego();
Paulo Alcantara1c780222018-11-14 16:24:03 -02001654out_destroy_dfs_cache:
1655#endif
1656#ifdef CONFIG_CIFS_DFS_UPCALL
1657 dfs_cache_destroy();
Shirish Pargaonkarc4aca0c2011-05-06 02:35:00 -05001658out_destroy_request_bufs:
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001659#endif
Steve French45af7a02006-04-21 22:52:25 +00001660 cifs_destroy_request_bufs();
Steve Frenchd3bf5222010-09-22 19:15:36 +00001661out_destroy_mids:
Steve French45af7a02006-04-21 22:52:25 +00001662 cifs_destroy_mids();
Steve Frenchd3bf5222010-09-22 19:15:36 +00001663out_destroy_inodecache:
Steve French45af7a02006-04-21 22:52:25 +00001664 cifs_destroy_inodecache();
Steve Frenchd3bf5222010-09-22 19:15:36 +00001665out_unreg_fscache:
Suresh Jayaramanf579cf32010-07-05 18:11:50 +05301666 cifs_fscache_unregister();
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001667out_destroy_cifsoplockd_wq:
1668 destroy_workqueue(cifsoplockd_wq);
Ronnie Sahlberg32546a92019-11-03 13:06:37 +10001669out_destroy_fileinfo_put_wq:
1670 destroy_workqueue(fileinfo_put_wq);
Steve French35cf94a2019-09-07 01:09:49 -05001671out_destroy_decrypt_wq:
1672 destroy_workqueue(decrypt_wq);
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001673out_destroy_cifsiod_wq:
Jeff Laytonda472fc2012-03-23 14:40:53 -04001674 destroy_workqueue(cifsiod_wq);
Steve Frenchd3bf5222010-09-22 19:15:36 +00001675out_clean_proc:
1676 cifs_proc_clean();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677 return rc;
1678}
1679
1680static void __exit
1681exit_cifs(void)
1682{
Steve French49218b42018-05-23 21:44:53 -05001683 cifs_dbg(NOISY, "exit_smb3\n");
Jeff Layton3dd93302012-03-21 06:27:55 -04001684 unregister_filesystem(&cifs_fs_type);
Steve French49218b42018-05-23 21:44:53 -05001685 unregister_filesystem(&smb3_fs_type);
Igor Mammedov78d31a32008-04-24 12:56:07 +04001686 cifs_dfs_release_automount_timer();
Shirish Pargaonkar4d79dba2011-04-27 23:34:35 -05001687 exit_cifs_idmap();
Samuel Cabrero06f08da2020-11-30 19:02:49 +01001688#ifdef CONFIG_CIFS_SWN_UPCALL
1689 cifs_genl_exit();
1690#endif
Jeff Layton84a15b92007-11-03 05:02:24 +00001691#ifdef CONFIG_CIFS_UPCALL
Shu Wang94183332017-09-07 16:03:27 +08001692 exit_cifs_spnego();
Jeff Layton84a15b92007-11-03 05:02:24 +00001693#endif
Paulo Alcantara1c780222018-11-14 16:24:03 -02001694#ifdef CONFIG_CIFS_DFS_UPCALL
1695 dfs_cache_destroy();
1696#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 cifs_destroy_request_bufs();
Jeff Layton3dd93302012-03-21 06:27:55 -04001698 cifs_destroy_mids();
1699 cifs_destroy_inodecache();
1700 cifs_fscache_unregister();
Rabin Vincent3998e6b82017-05-03 17:54:01 +02001701 destroy_workqueue(cifsoplockd_wq);
Steve French35cf94a2019-09-07 01:09:49 -05001702 destroy_workqueue(decrypt_wq);
Ronnie Sahlberg32546a92019-11-03 13:06:37 +10001703 destroy_workqueue(fileinfo_put_wq);
Jeff Laytonda472fc2012-03-23 14:40:53 -04001704 destroy_workqueue(cifsiod_wq);
Jeff Layton3dd93302012-03-21 06:27:55 -04001705 cifs_proc_clean();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706}
1707
Steve French1c3a13a2018-09-18 04:07:45 -05001708MODULE_AUTHOR("Steve French");
Steve French6dc0f872007-07-06 23:13:06 +00001709MODULE_LICENSE("GPL"); /* combination of LGPL + GPL source behaves as GPL */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710MODULE_DESCRIPTION
Steve French1c3a13a2018-09-18 04:07:45 -05001711 ("VFS to access SMB3 servers e.g. Samba, Macs, Azure and Windows (and "
1712 "also older servers complying with the SNIA CIFS Specification)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713MODULE_VERSION(CIFS_VERSION);
Ronnie Sahlberg3591bb82019-10-31 13:55:14 +10001714MODULE_SOFTDEP("ecb");
1715MODULE_SOFTDEP("hmac");
1716MODULE_SOFTDEP("md4");
1717MODULE_SOFTDEP("md5");
1718MODULE_SOFTDEP("nls");
1719MODULE_SOFTDEP("aes");
1720MODULE_SOFTDEP("cmac");
1721MODULE_SOFTDEP("sha256");
1722MODULE_SOFTDEP("sha512");
1723MODULE_SOFTDEP("aead2");
1724MODULE_SOFTDEP("ccm");
1725MODULE_SOFTDEP("gcm");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726module_init(init_cifs)
1727module_exit(exit_cifs)