blob: d9567ba2960bea58e679bd294ea150a609d537d7 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/inode.c
3 *
Steve French2dd29d32007-04-23 22:07:35 +00004 * Copyright (C) International Business Machines Corp., 2002,2007
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/stat.h>
23#include <linux/pagemap.h>
24#include <asm/div64.h>
25#include "cifsfs.h"
26#include "cifspdu.h"
27#include "cifsglob.h"
28#include "cifsproto.h"
29#include "cifs_debug.h"
30#include "cifs_fs_sb.h"
31
32int cifs_get_inode_info_unix(struct inode **pinode,
33 const unsigned char *search_path, struct super_block *sb, int xid)
34{
35 int rc = 0;
36 FILE_UNIX_BASIC_INFO findData;
37 struct cifsTconInfo *pTcon;
38 struct inode *inode;
39 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
40 char *tmp_path;
41
42 pTcon = cifs_sb->tcon;
Steve French26a21b92006-05-31 18:05:34 +000043 cFYI(1, ("Getting info on %s", search_path));
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 /* could have done a find first instead but this returns more info */
45 rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
Steve French737b7582005-04-28 22:41:06 -070046 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
47 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048/* dump_mem("\nUnixQPathInfo return data", &findData,
49 sizeof(findData)); */
50 if (rc) {
51 if (rc == -EREMOTE) {
52 tmp_path =
53 kmalloc(strnlen(pTcon->treeName,
54 MAX_TREE_SIZE + 1) +
55 strnlen(search_path, MAX_PATHCONF) + 1,
56 GFP_KERNEL);
Steve Frenchf6d09982008-01-08 23:18:22 +000057 if (tmp_path == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 return -ENOMEM;
Steve Frenchf6d09982008-01-08 23:18:22 +000059
Steve Frenchfb8c4b12007-07-10 01:16:18 +000060 /* have to skip first of the double backslash of
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 UNC name */
62 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
63 strncat(tmp_path, search_path, MAX_PATHCONF);
64 rc = connect_to_dfs_path(xid, pTcon->ses,
65 /* treename + */ tmp_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +000066 cifs_sb->local_nls,
67 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -070068 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 kfree(tmp_path);
70
71 /* BB fix up inode etc. */
72 } else if (rc) {
73 return rc;
74 }
75 } else {
76 struct cifsInodeInfo *cifsInfo;
77 __u32 type = le32_to_cpu(findData.Type);
78 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
79 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
80
81 /* get new inode */
82 if (*pinode == NULL) {
83 *pinode = new_inode(sb);
Steve Frenchfb8c4b12007-07-10 01:16:18 +000084 if (*pinode == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 return -ENOMEM;
86 /* Is an i_ino of zero legal? */
87 /* Are there sanity checks we can use to ensure that
88 the server is really filling in that field? */
Steve Frenchd0d2f2d2005-06-02 15:12:36 -070089 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 (*pinode)->i_ino =
91 (unsigned long)findData.UniqueId;
92 } /* note ino incremented to unique num in new_inode */
Steve French4523cc32007-04-30 20:13:06 +000093 if (sb->s_flags & MS_NOATIME)
Steve French1b2b2122007-02-17 04:30:54 +000094 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
Steve French50c2f752007-07-13 00:33:32 +000095
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 insert_inode_hash(*pinode);
97 }
98
99 inode = *pinode;
100 cifsInfo = CIFS_I(inode);
101
Steve French26a21b92006-05-31 18:05:34 +0000102 cFYI(1, ("Old time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 cifsInfo->time = jiffies;
Steve French26a21b92006-05-31 18:05:34 +0000104 cFYI(1, ("New time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 /* this is ok to set on every inode revalidate */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000106 atomic_set(&cifsInfo->inUse, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
108 inode->i_atime =
109 cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
110 inode->i_mtime =
111 cifs_NTtimeToUnix(le64_to_cpu
112 (findData.LastModificationTime));
113 inode->i_ctime =
114 cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
115 inode->i_mode = le64_to_cpu(findData.Permissions);
Steve French3020a1f2005-11-18 11:31:10 -0800116 /* since we set the inode type below we need to mask off
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000117 to avoid strange results if bits set above */
Steve French7f8ed422007-09-28 22:28:55 +0000118 inode->i_mode &= ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 if (type == UNIX_FILE) {
120 inode->i_mode |= S_IFREG;
121 } else if (type == UNIX_SYMLINK) {
122 inode->i_mode |= S_IFLNK;
123 } else if (type == UNIX_DIR) {
124 inode->i_mode |= S_IFDIR;
125 } else if (type == UNIX_CHARDEV) {
126 inode->i_mode |= S_IFCHR;
127 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
128 le64_to_cpu(findData.DevMinor) & MINORMASK);
129 } else if (type == UNIX_BLOCKDEV) {
130 inode->i_mode |= S_IFBLK;
131 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
132 le64_to_cpu(findData.DevMinor) & MINORMASK);
133 } else if (type == UNIX_FIFO) {
134 inode->i_mode |= S_IFIFO;
135 } else if (type == UNIX_SOCKET) {
136 inode->i_mode |= S_IFSOCK;
Steve French3020a1f2005-11-18 11:31:10 -0800137 } else {
138 /* safest to call it a file if we do not know */
139 inode->i_mode |= S_IFREG;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000140 cFYI(1, ("unknown type %d", type));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 }
Steve French50c2f752007-07-13 00:33:32 +0000142
Steve French4523cc32007-04-30 20:13:06 +0000143 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
144 inode->i_uid = cifs_sb->mnt_uid;
145 else
146 inode->i_uid = le64_to_cpu(findData.Uid);
147
148 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
149 inode->i_gid = cifs_sb->mnt_gid;
150 else
151 inode->i_gid = le64_to_cpu(findData.Gid);
Steve French50c2f752007-07-13 00:33:32 +0000152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 inode->i_nlink = le64_to_cpu(findData.Nlinks);
154
Steve French3677db12007-02-26 16:46:11 +0000155 spin_lock(&inode->i_lock);
Steve French7ba52632007-02-08 18:14:13 +0000156 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 /* can not safely change the file size here if the
158 client is writing to it due to potential races */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 i_size_write(inode, end_of_file);
160
161 /* blksize needs to be multiple of two. So safer to default to
162 blksize and blkbits set in superblock so 2**blkbits and blksize
163 will match rather than setting to:
164 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
165
166 /* This seems incredibly stupid but it turns out that i_blocks
167 is not related to (i_size / i_blksize), instead 512 byte size
168 is required for calculating num blocks */
169
170 /* 512 bytes (2**9) is the fake blocksize that must be used */
171 /* for this calculation */
172 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
173 }
Steve French3677db12007-02-26 16:46:11 +0000174 spin_unlock(&inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
176 if (num_of_bytes < end_of_file)
Steve French8b94bcb2005-11-11 11:41:00 -0800177 cFYI(1, ("allocation size less than end of file"));
Andrew Morton5515eff2006-03-26 01:37:53 -0800178 cFYI(1, ("Size %ld and blocks %llu",
179 (unsigned long) inode->i_size,
180 (unsigned long long)inode->i_blocks));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 if (S_ISREG(inode->i_mode)) {
Steve French8b94bcb2005-11-11 11:41:00 -0800182 cFYI(1, ("File inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 inode->i_op = &cifs_file_inode_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800184 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
185 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000186 inode->i_fop =
Steve French8b94bcb2005-11-11 11:41:00 -0800187 &cifs_file_direct_nobrl_ops;
188 else
189 inode->i_fop = &cifs_file_direct_ops;
Steve French4523cc32007-04-30 20:13:06 +0000190 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French8b94bcb2005-11-11 11:41:00 -0800191 inode->i_fop = &cifs_file_nobrl_ops;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000192 else /* not direct, send byte range locks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 inode->i_fop = &cifs_file_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800194
Steve Frenchbfa0d752005-08-31 21:50:37 -0700195 /* check if server can support readpages */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000196 if (pTcon->ses->server->maxBuf <
Dave Kleikamp273d81d2006-06-01 19:41:23 +0000197 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
198 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
199 else
200 inode->i_data.a_ops = &cifs_addr_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 } else if (S_ISDIR(inode->i_mode)) {
Steve French8b94bcb2005-11-11 11:41:00 -0800202 cFYI(1, ("Directory inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 inode->i_op = &cifs_dir_inode_ops;
204 inode->i_fop = &cifs_dir_ops;
205 } else if (S_ISLNK(inode->i_mode)) {
Steve French8b94bcb2005-11-11 11:41:00 -0800206 cFYI(1, ("Symbolic Link inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 inode->i_op = &cifs_symlink_inode_ops;
208 /* tmp_inode->i_fop = */ /* do not need to set to anything */
209 } else {
Steve French8b94bcb2005-11-11 11:41:00 -0800210 cFYI(1, ("Init special inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 init_special_inode(inode, inode->i_mode,
212 inode->i_rdev);
213 }
214 }
215 return rc;
216}
217
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000218static int decode_sfu_inode(struct inode *inode, __u64 size,
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800219 const unsigned char *path,
220 struct cifs_sb_info *cifs_sb, int xid)
221{
222 int rc;
223 int oplock = FALSE;
224 __u16 netfid;
225 struct cifsTconInfo *pTcon = cifs_sb->tcon;
Steve French86c96b42005-11-18 20:25:31 -0800226 char buf[24];
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800227 unsigned int bytes_read;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000228 char *pbuf;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800229
230 pbuf = buf;
231
Steve French4523cc32007-04-30 20:13:06 +0000232 if (size == 0) {
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800233 inode->i_mode |= S_IFIFO;
234 return 0;
235 } else if (size < 8) {
236 return -EINVAL; /* EOPNOTSUPP? */
237 }
Steve French50c2f752007-07-13 00:33:32 +0000238
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800239 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
240 CREATE_NOT_DIR, &netfid, &oplock, NULL,
241 cifs_sb->local_nls,
242 cifs_sb->mnt_cifs_flags &
243 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000244 if (rc == 0) {
Steve Frenchec637e32005-12-12 20:53:18 -0800245 int buf_type = CIFS_NO_BUFFER;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800246 /* Read header */
247 rc = CIFSSMBRead(xid, pTcon,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000248 netfid,
Steve French86c96b42005-11-18 20:25:31 -0800249 24 /* length */, 0 /* offset */,
Steve Frenchec637e32005-12-12 20:53:18 -0800250 &bytes_read, &pbuf, &buf_type);
Steve French4523cc32007-04-30 20:13:06 +0000251 if ((rc == 0) && (bytes_read >= 8)) {
252 if (memcmp("IntxBLK", pbuf, 8) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000253 cFYI(1, ("Block device"));
Steve French3020a1f2005-11-18 11:31:10 -0800254 inode->i_mode |= S_IFBLK;
Steve French4523cc32007-04-30 20:13:06 +0000255 if (bytes_read == 24) {
Steve French86c96b42005-11-18 20:25:31 -0800256 /* we have enough to decode dev num */
257 __u64 mjr; /* major */
258 __u64 mnr; /* minor */
259 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
260 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
261 inode->i_rdev = MKDEV(mjr, mnr);
262 }
Steve French4523cc32007-04-30 20:13:06 +0000263 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000264 cFYI(1, ("Char device"));
Steve French3020a1f2005-11-18 11:31:10 -0800265 inode->i_mode |= S_IFCHR;
Steve French4523cc32007-04-30 20:13:06 +0000266 if (bytes_read == 24) {
Steve French86c96b42005-11-18 20:25:31 -0800267 /* we have enough to decode dev num */
268 __u64 mjr; /* major */
269 __u64 mnr; /* minor */
270 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
271 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
272 inode->i_rdev = MKDEV(mjr, mnr);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000273 }
Steve French4523cc32007-04-30 20:13:06 +0000274 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000275 cFYI(1, ("Symlink"));
Steve French3020a1f2005-11-18 11:31:10 -0800276 inode->i_mode |= S_IFLNK;
Steve French86c96b42005-11-18 20:25:31 -0800277 } else {
278 inode->i_mode |= S_IFREG; /* file? */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000279 rc = -EOPNOTSUPP;
Steve French86c96b42005-11-18 20:25:31 -0800280 }
Steve French3020a1f2005-11-18 11:31:10 -0800281 } else {
282 inode->i_mode |= S_IFREG; /* then it is a file */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000283 rc = -EOPNOTSUPP; /* or some unknown SFU type */
284 }
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800285 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800286 }
287 return rc;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800288}
289
Steve French9e294f12005-11-17 16:59:21 -0800290#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
291
Steve French953f8682007-10-31 04:54:42 +0000292static int get_sfu_mode(struct inode *inode,
Steve French9e294f12005-11-17 16:59:21 -0800293 const unsigned char *path,
294 struct cifs_sb_info *cifs_sb, int xid)
295{
Steve French3020a1f2005-11-18 11:31:10 -0800296#ifdef CONFIG_CIFS_XATTR
Steve French9e294f12005-11-17 16:59:21 -0800297 ssize_t rc;
298 char ea_value[4];
299 __u32 mode;
300
301 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
302 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000303 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French4523cc32007-04-30 20:13:06 +0000304 if (rc < 0)
Steve French9e294f12005-11-17 16:59:21 -0800305 return (int)rc;
306 else if (rc > 3) {
307 mode = le32_to_cpu(*((__le32 *)ea_value));
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000308 inode->i_mode &= ~SFBITS_MASK;
309 cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
Steve French9e294f12005-11-17 16:59:21 -0800310 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000311 cFYI(1, ("special mode bits 0%o", mode));
Steve French9e294f12005-11-17 16:59:21 -0800312 return 0;
313 } else {
314 return 0;
315 }
Steve French3020a1f2005-11-18 11:31:10 -0800316#else
317 return -EOPNOTSUPP;
318#endif
Steve French9e294f12005-11-17 16:59:21 -0800319}
320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321int cifs_get_inode_info(struct inode **pinode,
322 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
323 struct super_block *sb, int xid)
324{
325 int rc = 0;
326 struct cifsTconInfo *pTcon;
327 struct inode *inode;
328 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
329 char *tmp_path;
330 char *buf = NULL;
Steve French8d6286f2006-11-16 22:48:25 +0000331 int adjustTZ = FALSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332
333 pTcon = cifs_sb->tcon;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000334 cFYI(1, ("Getting info on %s", search_path));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700336 if ((pfindData == NULL) && (*pinode != NULL)) {
337 if (CIFS_I(*pinode)->clientCanCacheRead) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000338 cFYI(1, ("No need to revalidate cached inode sizes"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 return rc;
340 }
341 }
342
343 /* if file info not passed in then get it from server */
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700344 if (pfindData == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700346 if (buf == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 return -ENOMEM;
348 pfindData = (FILE_ALL_INFO *)buf;
349 /* could do find first instead but this returns more info */
350 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000351 0 /* not legacy */,
Steve French6b8edfe2005-08-23 20:26:03 -0700352 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700353 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French6b8edfe2005-08-23 20:26:03 -0700354 /* BB optimize code so we do not make the above call
355 when server claims no NT SMB support and the above call
356 failed at least once - set flag in tcon or mount */
Steve French4523cc32007-04-30 20:13:06 +0000357 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
Steve French6b8edfe2005-08-23 20:26:03 -0700358 rc = SMBQueryInformation(xid, pTcon, search_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000359 pfindData, cifs_sb->local_nls,
Steve French6b8edfe2005-08-23 20:26:03 -0700360 cifs_sb->mnt_cifs_flags &
361 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French8d6286f2006-11-16 22:48:25 +0000362 adjustTZ = TRUE;
Steve French6b8edfe2005-08-23 20:26:03 -0700363 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 }
365 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
366 if (rc) {
367 if (rc == -EREMOTE) {
368 tmp_path =
369 kmalloc(strnlen
370 (pTcon->treeName,
371 MAX_TREE_SIZE + 1) +
372 strnlen(search_path, MAX_PATHCONF) + 1,
373 GFP_KERNEL);
374 if (tmp_path == NULL) {
375 kfree(buf);
376 return -ENOMEM;
377 }
378
379 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
380 strncat(tmp_path, search_path, MAX_PATHCONF);
381 rc = connect_to_dfs_path(xid, pTcon->ses,
382 /* treename + */ tmp_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000383 cifs_sb->local_nls,
384 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700385 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 kfree(tmp_path);
387 /* BB fix up inode etc. */
388 } else if (rc) {
389 kfree(buf);
390 return rc;
391 }
392 } else {
393 struct cifsInodeInfo *cifsInfo;
394 __u32 attr = le32_to_cpu(pfindData->Attributes);
395
396 /* get new inode */
397 if (*pinode == NULL) {
398 *pinode = new_inode(sb);
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000399 if (*pinode == NULL) {
400 kfree(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 return -ENOMEM;
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000402 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 /* Is an i_ino of zero legal? Can we use that to check
404 if the server supports returning inode numbers? Are
405 there other sanity checks we can use to ensure that
406 the server is really filling in that field? */
407
408 /* We can not use the IndexNumber field by default from
409 Windows or Samba (in ALL_INFO buf) but we can request
410 it explicitly. It may not be unique presumably if
411 the server has multiple devices mounted under one
412 share */
413
414 /* There may be higher info levels that work but are
415 there Windows server or network appliances for which
416 IndexNumber field is not guaranteed unique? */
417
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000418 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 int rc1 = 0;
420 __u64 inode_num;
421
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000422 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
423 search_path, &inode_num,
Steve French737b7582005-04-28 22:41:06 -0700424 cifs_sb->local_nls,
425 cifs_sb->mnt_cifs_flags &
426 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700427 if (rc1) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000428 cFYI(1, ("GetSrvInodeNum rc %d", rc1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 /* BB EOPNOSUPP disable SERVER_INUM? */
430 } else /* do we need cast or hash to ino? */
431 (*pinode)->i_ino = inode_num;
432 } /* else ino incremented to unique num in new_inode*/
Steve French4523cc32007-04-30 20:13:06 +0000433 if (sb->s_flags & MS_NOATIME)
Steve French1b2b2122007-02-17 04:30:54 +0000434 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 insert_inode_hash(*pinode);
436 }
437 inode = *pinode;
438 cifsInfo = CIFS_I(inode);
439 cifsInfo->cifsAttrs = attr;
Steve French26a21b92006-05-31 18:05:34 +0000440 cFYI(1, ("Old time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 cifsInfo->time = jiffies;
Steve French26a21b92006-05-31 18:05:34 +0000442 cFYI(1, ("New time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443
444 /* blksize needs to be multiple of two. So safer to default to
445 blksize and blkbits set in superblock so 2**blkbits and blksize
446 will match rather than setting to:
447 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
448
Steve French26a21b92006-05-31 18:05:34 +0000449 /* Linux can not store file creation time so ignore it */
Steve French4523cc32007-04-30 20:13:06 +0000450 if (pfindData->LastAccessTime)
Steve French1bd5bbc2006-09-28 03:35:57 +0000451 inode->i_atime = cifs_NTtimeToUnix
452 (le64_to_cpu(pfindData->LastAccessTime));
453 else /* do not need to use current_fs_time - time not stored */
454 inode->i_atime = CURRENT_TIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 inode->i_mtime =
456 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
457 inode->i_ctime =
458 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
Steve French26a21b92006-05-31 18:05:34 +0000459 cFYI(0, ("Attributes came in as 0x%x", attr));
Steve French4523cc32007-04-30 20:13:06 +0000460 if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
Steve French8d6286f2006-11-16 22:48:25 +0000461 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000462 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
Steve French8d6286f2006-11-16 22:48:25 +0000463 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
465 /* set default mode. will override for dirs below */
466 if (atomic_read(&cifsInfo->inUse) == 0)
467 /* new inode, can safely set these fields */
468 inode->i_mode = cifs_sb->mnt_file_mode;
Steve French3020a1f2005-11-18 11:31:10 -0800469 else /* since we set the inode type below we need to mask off
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000470 to avoid strange results if type changes and both
471 get orred in */
472 inode->i_mode &= ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473/* if (attr & ATTR_REPARSE) */
474 /* We no longer handle these as symlinks because we could not
475 follow them due to the absolute path with drive letter */
476 if (attr & ATTR_DIRECTORY) {
477 /* override default perms since we do not do byte range locking
478 on dirs */
479 inode->i_mode = cifs_sb->mnt_dir_mode;
480 inode->i_mode |= S_IFDIR;
Steve Frencheda3c0292005-07-21 15:20:28 -0700481 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
482 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
483 /* No need to le64 convert size of zero */
484 (pfindData->EndOfFile == 0)) {
485 inode->i_mode = cifs_sb->mnt_file_mode;
486 inode->i_mode |= S_IFIFO;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800487/* BB Finish for SFU style symlinks and devices */
488 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
489 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000490 if (decode_sfu_inode(inode,
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800491 le64_to_cpu(pfindData->EndOfFile),
492 search_path,
493 cifs_sb, xid)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000494 cFYI(1, ("Unrecognized sfu inode type"));
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800495 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000496 cFYI(1, ("sfu mode 0%o", inode->i_mode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 } else {
498 inode->i_mode |= S_IFREG;
499 /* treat the dos attribute of read-only as read-only
500 mode e.g. 555 */
501 if (cifsInfo->cifsAttrs & ATTR_READONLY)
502 inode->i_mode &= ~(S_IWUGO);
Alan Tysonf5c1e2e2007-03-10 06:05:14 +0000503 else if ((inode->i_mode & S_IWUGO) == 0)
504 /* the ATTR_READONLY flag may have been */
505 /* changed on server -- set any w bits */
506 /* allowed by mnt_file_mode */
507 inode->i_mode |= (S_IWUGO &
508 cifs_sb->mnt_file_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 /* BB add code here -
510 validate if device or weird share or device type? */
511 }
Steve French50c2f752007-07-13 00:33:32 +0000512
Steve French3677db12007-02-26 16:46:11 +0000513 spin_lock(&inode->i_lock);
Steve Frenchf6d09982008-01-08 23:18:22 +0000514 if (is_size_safe_to_change(cifsInfo,
515 le64_to_cpu(pfindData->EndOfFile))) {
Steve French7ba52632007-02-08 18:14:13 +0000516 /* can not safely shrink the file size here if the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 client is writing to it due to potential races */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000518 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519
520 /* 512 bytes (2**9) is the fake blocksize that must be
521 used for this calculation */
522 inode->i_blocks = (512 - 1 + le64_to_cpu(
523 pfindData->AllocationSize)) >> 9;
524 }
Steve French3677db12007-02-26 16:46:11 +0000525 spin_unlock(&inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
527 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
528
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000529 /* BB fill in uid and gid here? with help from winbind?
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 or retrieve from NTFS stream extended attribute */
Steve French4879b442007-10-19 21:57:39 +0000531#ifdef CONFIG_CIFS_EXPERIMENTAL
Steve French953f8682007-10-31 04:54:42 +0000532 /* fill in 0777 bits from ACL */
Steve French4879b442007-10-19 21:57:39 +0000533 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
534 cFYI(1, ("Getting mode bits from ACL"));
Steve French630f3f0c2007-10-25 21:17:17 +0000535 acl_to_uid_mode(inode, search_path);
Steve French4879b442007-10-19 21:57:39 +0000536 }
537#endif
Steve French4523cc32007-04-30 20:13:06 +0000538 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
Steve French953f8682007-10-31 04:54:42 +0000539 /* fill in remaining high mode bits e.g. SUID, VTX */
540 get_sfu_mode(inode, search_path, cifs_sb, xid);
Steve French9e294f12005-11-17 16:59:21 -0800541 } else if (atomic_read(&cifsInfo->inUse) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 inode->i_uid = cifs_sb->mnt_uid;
543 inode->i_gid = cifs_sb->mnt_gid;
544 /* set so we do not keep refreshing these fields with
545 bad data after user has changed them in memory */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000546 atomic_set(&cifsInfo->inUse, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 }
548
549 if (S_ISREG(inode->i_mode)) {
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800550 cFYI(1, ("File inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 inode->i_op = &cifs_file_inode_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800552 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
553 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
554 inode->i_fop =
555 &cifs_file_direct_nobrl_ops;
556 else
557 inode->i_fop = &cifs_file_direct_ops;
Steve French4523cc32007-04-30 20:13:06 +0000558 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French8b94bcb2005-11-11 11:41:00 -0800559 inode->i_fop = &cifs_file_nobrl_ops;
560 else /* not direct, send byte range locks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 inode->i_fop = &cifs_file_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800562
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000563 if (pTcon->ses->server->maxBuf <
Dave Kleikamp273d81d2006-06-01 19:41:23 +0000564 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
565 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
566 else
567 inode->i_data.a_ops = &cifs_addr_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 } else if (S_ISDIR(inode->i_mode)) {
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800569 cFYI(1, ("Directory inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 inode->i_op = &cifs_dir_inode_ops;
571 inode->i_fop = &cifs_dir_ops;
572 } else if (S_ISLNK(inode->i_mode)) {
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800573 cFYI(1, ("Symbolic Link inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 inode->i_op = &cifs_symlink_inode_ops;
575 } else {
576 init_special_inode(inode, inode->i_mode,
577 inode->i_rdev);
578 }
579 }
580 kfree(buf);
581 return rc;
582}
583
Steve French7f8ed422007-09-28 22:28:55 +0000584static const struct inode_operations cifs_ipc_inode_ops = {
585 .lookup = cifs_lookup,
586};
587
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588/* gets root inode */
589void cifs_read_inode(struct inode *inode)
590{
Steve French7f8ed422007-09-28 22:28:55 +0000591 int xid, rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 struct cifs_sb_info *cifs_sb;
593
594 cifs_sb = CIFS_SB(inode->i_sb);
595 xid = GetXid();
Steve Frenchc18c8422007-07-18 23:21:09 +0000596
597 if (cifs_sb->tcon->unix_ext)
Steve French7f8ed422007-09-28 22:28:55 +0000598 rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 else
Steve French7f8ed422007-09-28 22:28:55 +0000600 rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
601 if (rc && cifs_sb->tcon->ipc) {
602 cFYI(1, ("ipc connection - fake read inode"));
603 inode->i_mode |= S_IFDIR;
604 inode->i_nlink = 2;
605 inode->i_op = &cifs_ipc_inode_ops;
606 inode->i_fop = &simple_dir_operations;
607 inode->i_uid = cifs_sb->mnt_uid;
608 inode->i_gid = cifs_sb->mnt_gid;
609 }
610
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 /* can not call macro FreeXid here since in a void func */
612 _FreeXid(xid);
613}
614
615int cifs_unlink(struct inode *inode, struct dentry *direntry)
616{
617 int rc = 0;
618 int xid;
619 struct cifs_sb_info *cifs_sb;
620 struct cifsTconInfo *pTcon;
621 char *full_path = NULL;
622 struct cifsInodeInfo *cifsInode;
623 FILE_BASIC_INFO *pinfo_buf;
624
Steve French06bcfed2006-03-31 22:43:50 +0000625 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
627 xid = GetXid();
628
Steve French4523cc32007-04-30 20:13:06 +0000629 if (inode)
Steve French6910ab32006-03-31 03:37:08 +0000630 cifs_sb = CIFS_SB(inode->i_sb);
631 else
Steve French06bcfed2006-03-31 22:43:50 +0000632 cifs_sb = CIFS_SB(direntry->d_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 pTcon = cifs_sb->tcon;
634
635 /* Unlink can be called from rename so we can not grab the sem here
636 since we deadlock otherwise */
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800637/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
Steve French7f573562005-08-30 11:32:14 -0700638 full_path = build_path_from_dentry(direntry);
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800639/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 if (full_path == NULL) {
641 FreeXid(xid);
642 return -ENOMEM;
643 }
Steve French2d785a52007-07-15 01:48:57 +0000644
645 if ((pTcon->ses->capabilities & CAP_UNIX) &&
646 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
647 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
648 rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
649 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
650 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
651 cFYI(1, ("posix del rc %d", rc));
652 if ((rc == 0) || (rc == -ENOENT))
653 goto psx_del_no_retry;
654 }
655
Steve French737b7582005-04-28 22:41:06 -0700656 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
657 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French2d785a52007-07-15 01:48:57 +0000658psx_del_no_retry:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700660 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700661 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 } else if (rc == -ENOENT) {
663 d_drop(direntry);
664 } else if (rc == -ETXTBSY) {
665 int oplock = FALSE;
666 __u16 netfid;
667
668 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
669 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
Steve French737b7582005-04-28 22:41:06 -0700670 &netfid, &oplock, NULL, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000671 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700672 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000673 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000675 cifs_sb->local_nls,
676 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700677 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700679 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700680 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 }
682 } else if (rc == -EACCES) {
683 /* try only if r/o attribute set in local lookup data? */
Eric Sesterhenna048d7a2006-02-21 22:33:09 +0000684 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 if (pinfo_buf) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 /* ATTRS set to normal clears r/o bit */
687 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
688 if (!(pTcon->ses->flags & CIFS_SES_NT4))
689 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
690 pinfo_buf,
Steve French737b7582005-04-28 22:41:06 -0700691 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000692 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700693 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 else
695 rc = -EOPNOTSUPP;
696
697 if (rc == -EOPNOTSUPP) {
698 int oplock = FALSE;
699 __u16 netfid;
700 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
701 full_path,
702 (__u16)ATTR_NORMAL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000703 cifs_sb->local_nls);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 For some strange reason it seems that NT4 eats the
705 old setattr call without actually setting the
706 attributes so on to the third attempted workaround
707 */
708
709 /* BB could scan to see if we already have it open
710 and pass in pid of opener to function */
711 rc = CIFSSMBOpen(xid, pTcon, full_path,
712 FILE_OPEN, SYNCHRONIZE |
713 FILE_WRITE_ATTRIBUTES, 0,
714 &netfid, &oplock, NULL,
Steve French737b7582005-04-28 22:41:06 -0700715 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000716 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700717 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000718 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719 rc = CIFSSMBSetFileTimes(xid, pTcon,
720 pinfo_buf,
721 netfid);
722 CIFSSMBClose(xid, pTcon, netfid);
723 }
724 }
725 kfree(pinfo_buf);
726 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000727 if (rc == 0) {
728 rc = CIFSSMBDelFile(xid, pTcon, full_path,
729 cifs_sb->local_nls,
730 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700731 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700733 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700734 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 } else if (rc == -ETXTBSY) {
736 int oplock = FALSE;
737 __u16 netfid;
738
739 rc = CIFSSMBOpen(xid, pTcon, full_path,
740 FILE_OPEN, DELETE,
741 CREATE_NOT_DIR |
742 CREATE_DELETE_ON_CLOSE,
743 &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000744 cifs_sb->local_nls,
745 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700746 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000747 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 CIFSSMBRenameOpenFile(xid, pTcon,
749 netfid, NULL,
Steve French737b7582005-04-28 22:41:06 -0700750 cifs_sb->local_nls,
751 cifs_sb->mnt_cifs_flags &
752 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700754 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700755 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 }
757 /* BB if rc = -ETXTBUSY goto the rename logic BB */
758 }
759 }
760 }
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700761 if (direntry->d_inode) {
Steve Frenchb2aeb9d2005-05-17 13:16:18 -0500762 cifsInode = CIFS_I(direntry->d_inode);
763 cifsInode->time = 0; /* will force revalidate to get info
764 when needed */
765 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
766 }
Steve French4523cc32007-04-30 20:13:06 +0000767 if (inode) {
Steve French06bcfed2006-03-31 22:43:50 +0000768 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
769 cifsInode = CIFS_I(inode);
770 cifsInode->time = 0; /* force revalidate of dir as well */
771 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772
773 kfree(full_path);
774 FreeXid(xid);
775 return rc;
776}
777
Steve French2dd29d32007-04-23 22:07:35 +0000778static void posix_fill_in_inode(struct inode *tmp_inode,
779 FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
780{
781 loff_t local_size;
782 struct timespec local_mtime;
783
784 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
785 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
786
787 __u32 type = le32_to_cpu(pData->Type);
788 __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
789 __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
790 cifsInfo->time = jiffies;
791 atomic_inc(&cifsInfo->inUse);
792
793 /* save mtime and size */
794 local_mtime = tmp_inode->i_mtime;
795 local_size = tmp_inode->i_size;
796
797 tmp_inode->i_atime =
798 cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
799 tmp_inode->i_mtime =
800 cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
801 tmp_inode->i_ctime =
802 cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
803
804 tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
805 /* since we set the inode type below we need to mask off type
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000806 to avoid strange results if bits above were corrupt */
807 tmp_inode->i_mode &= ~S_IFMT;
Steve French2dd29d32007-04-23 22:07:35 +0000808 if (type == UNIX_FILE) {
809 *pobject_type = DT_REG;
810 tmp_inode->i_mode |= S_IFREG;
811 } else if (type == UNIX_SYMLINK) {
812 *pobject_type = DT_LNK;
813 tmp_inode->i_mode |= S_IFLNK;
814 } else if (type == UNIX_DIR) {
815 *pobject_type = DT_DIR;
816 tmp_inode->i_mode |= S_IFDIR;
817 } else if (type == UNIX_CHARDEV) {
818 *pobject_type = DT_CHR;
819 tmp_inode->i_mode |= S_IFCHR;
820 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
821 le64_to_cpu(pData->DevMinor) & MINORMASK);
822 } else if (type == UNIX_BLOCKDEV) {
823 *pobject_type = DT_BLK;
824 tmp_inode->i_mode |= S_IFBLK;
825 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
826 le64_to_cpu(pData->DevMinor) & MINORMASK);
827 } else if (type == UNIX_FIFO) {
828 *pobject_type = DT_FIFO;
829 tmp_inode->i_mode |= S_IFIFO;
830 } else if (type == UNIX_SOCKET) {
831 *pobject_type = DT_SOCK;
832 tmp_inode->i_mode |= S_IFSOCK;
833 } else {
834 /* safest to just call it a file */
835 *pobject_type = DT_REG;
836 tmp_inode->i_mode |= S_IFREG;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000837 cFYI(1, ("unknown inode type %d", type));
Steve French2dd29d32007-04-23 22:07:35 +0000838 }
839
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000840#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000841 cFYI(1, ("object type: %d", type));
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000842#endif
Steve French2dd29d32007-04-23 22:07:35 +0000843 tmp_inode->i_uid = le64_to_cpu(pData->Uid);
844 tmp_inode->i_gid = le64_to_cpu(pData->Gid);
845 tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
846
847 spin_lock(&tmp_inode->i_lock);
848 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000849 /* can not safely change the file size here if the
Steve French2dd29d32007-04-23 22:07:35 +0000850 client is writing to it due to potential races */
851 i_size_write(tmp_inode, end_of_file);
852
853 /* 512 bytes (2**9) is the fake blocksize that must be used */
854 /* for this calculation, not the real blocksize */
855 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
856 }
857 spin_unlock(&tmp_inode->i_lock);
858
859 if (S_ISREG(tmp_inode->i_mode)) {
860 cFYI(1, ("File inode"));
861 tmp_inode->i_op = &cifs_file_inode_ops;
862
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000863 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
864 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000865 tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
866 else
867 tmp_inode->i_fop = &cifs_file_direct_ops;
Steve French50c2f752007-07-13 00:33:32 +0000868
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000869 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000870 tmp_inode->i_fop = &cifs_file_nobrl_ops;
871 else
872 tmp_inode->i_fop = &cifs_file_ops;
873
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000874 if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
875 (cifs_sb->tcon->ses->server->maxBuf <
Steve French2dd29d32007-04-23 22:07:35 +0000876 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
877 tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
878 else
879 tmp_inode->i_data.a_ops = &cifs_addr_ops;
880
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000881 if (isNewInode)
882 return; /* No sense invalidating pages for new inode
883 since we we have not started caching
884 readahead file data yet */
Steve French2dd29d32007-04-23 22:07:35 +0000885
886 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
887 (local_size == tmp_inode->i_size)) {
888 cFYI(1, ("inode exists but unchanged"));
889 } else {
890 /* file may have changed on server */
891 cFYI(1, ("invalidate inode, readdir detected change"));
892 invalidate_remote_inode(tmp_inode);
893 }
894 } else if (S_ISDIR(tmp_inode->i_mode)) {
895 cFYI(1, ("Directory inode"));
896 tmp_inode->i_op = &cifs_dir_inode_ops;
897 tmp_inode->i_fop = &cifs_dir_ops;
898 } else if (S_ISLNK(tmp_inode->i_mode)) {
899 cFYI(1, ("Symbolic Link inode"));
900 tmp_inode->i_op = &cifs_symlink_inode_ops;
901/* tmp_inode->i_fop = *//* do not need to set to anything */
902 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000903 cFYI(1, ("Special inode"));
Steve French2dd29d32007-04-23 22:07:35 +0000904 init_special_inode(tmp_inode, tmp_inode->i_mode,
905 tmp_inode->i_rdev);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000906 }
Steve French2dd29d32007-04-23 22:07:35 +0000907}
908
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
910{
911 int rc = 0;
912 int xid;
913 struct cifs_sb_info *cifs_sb;
914 struct cifsTconInfo *pTcon;
915 char *full_path = NULL;
916 struct inode *newinode = NULL;
917
Steve French6473a552005-11-29 20:20:10 -0800918 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
920 xid = GetXid();
921
922 cifs_sb = CIFS_SB(inode->i_sb);
923 pTcon = cifs_sb->tcon;
924
Steve French7f573562005-08-30 11:32:14 -0700925 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 if (full_path == NULL) {
927 FreeXid(xid);
928 return -ENOMEM;
929 }
Steve French50c2f752007-07-13 00:33:32 +0000930
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000931 if ((pTcon->ses->capabilities & CAP_UNIX) &&
932 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
Steve French2dd29d32007-04-23 22:07:35 +0000933 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
934 u32 oplock = 0;
Steve Frenchf6d09982008-01-08 23:18:22 +0000935 FILE_UNIX_BASIC_INFO *pInfo =
Steve French2dd29d32007-04-23 22:07:35 +0000936 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000937 if (pInfo == NULL) {
Steve French2dd29d32007-04-23 22:07:35 +0000938 rc = -ENOMEM;
939 goto mkdir_out;
940 }
Steve French50c2f752007-07-13 00:33:32 +0000941
Jeffa8cd9252007-09-13 18:38:50 +0000942 mode &= ~current->fs->umask;
Steve French2dd29d32007-04-23 22:07:35 +0000943 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
944 mode, NULL /* netfid */, pInfo, &oplock,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000945 full_path, cifs_sb->local_nls,
946 cifs_sb->mnt_cifs_flags &
Steve French2dd29d32007-04-23 22:07:35 +0000947 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchc45d7072007-09-17 02:04:21 +0000948 if (rc == -EOPNOTSUPP) {
949 kfree(pInfo);
950 goto mkdir_retry_old;
951 } else if (rc) {
Steve French2dd29d32007-04-23 22:07:35 +0000952 cFYI(1, ("posix mkdir returned 0x%x", rc));
953 d_drop(direntry);
954 } else {
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000955 int obj_type;
Cyril Gorcunov8f2376a2007-10-14 17:58:43 +0000956 if (pInfo->Type == cpu_to_le32(-1)) {
957 /* no return info, go query for it */
Steve French5a07cdf2007-09-16 23:12:47 +0000958 kfree(pInfo);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000959 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000960 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000961/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
962 to set uid/gid */
Steve French2dd29d32007-04-23 22:07:35 +0000963 inc_nlink(inode);
964 if (pTcon->nocase)
965 direntry->d_op = &cifs_ci_dentry_ops;
966 else
967 direntry->d_op = &cifs_dentry_ops;
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000968
969 newinode = new_inode(inode->i_sb);
Steve French5a07cdf2007-09-16 23:12:47 +0000970 if (newinode == NULL) {
971 kfree(pInfo);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000972 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000973 }
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000974 /* Is an i_ino of zero legal? */
975 /* Are there sanity checks we can use to ensure that
976 the server is really filling in that field? */
977 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
978 newinode->i_ino =
979 (unsigned long)pInfo->UniqueId;
980 } /* note ino incremented to unique num in new_inode */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000981 if (inode->i_sb->s_flags & MS_NOATIME)
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000982 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
983 newinode->i_nlink = 2;
984
985 insert_inode_hash(newinode);
Steve French2dd29d32007-04-23 22:07:35 +0000986 d_instantiate(direntry, newinode);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000987
988 /* we already checked in POSIXCreate whether
989 frame was long enough */
990 posix_fill_in_inode(direntry->d_inode,
Steve French2dd29d32007-04-23 22:07:35 +0000991 pInfo, &obj_type, 1 /* NewInode */);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000992#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000993 cFYI(1, ("instantiated dentry %p %s to inode %p",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000994 direntry, direntry->d_name.name, newinode));
995
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000996 if (newinode->i_nlink != 2)
997 cFYI(1, ("unexpected number of links %d",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000998 newinode->i_nlink));
999#endif
Steve French2dd29d32007-04-23 22:07:35 +00001000 }
1001 kfree(pInfo);
1002 goto mkdir_out;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001003 }
Steve Frenchc45d7072007-09-17 02:04:21 +00001004mkdir_retry_old:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 /* BB add setting the equivalent of mode via CreateX w/ACLs */
Steve French737b7582005-04-28 22:41:06 -07001006 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
1007 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 if (rc) {
Steve French26a21b92006-05-31 18:05:34 +00001009 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 d_drop(direntry);
1011 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001012mkdir_get_info:
Dave Hansend8c76e62006-09-30 23:29:04 -07001013 inc_nlink(inode);
Steve Frenchc18c8422007-07-18 23:21:09 +00001014 if (pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015 rc = cifs_get_inode_info_unix(&newinode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001016 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 else
1018 rc = cifs_get_inode_info(&newinode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001019 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020
Steve Frenchb92327f2005-08-22 20:09:43 -07001021 if (pTcon->nocase)
1022 direntry->d_op = &cifs_ci_dentry_ops;
1023 else
1024 direntry->d_op = &cifs_dentry_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 d_instantiate(direntry, newinode);
Steve French2dd29d32007-04-23 22:07:35 +00001026 /* setting nlink not necessary except in cases where we
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001027 * failed to get it from the server or was set bogus */
Steve French2dd29d32007-04-23 22:07:35 +00001028 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001029 direntry->d_inode->i_nlink = 2;
Steve Frenchc18c8422007-07-18 23:21:09 +00001030 if (pTcon->unix_ext) {
Steve French3ce53fc2007-06-08 14:55:14 +00001031 mode &= ~current->fs->umask;
Steve Frenchd0d2f2d2005-06-02 15:12:36 -07001032 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1034 mode,
Steve French83451872005-12-01 17:12:59 -08001035 (__u64)current->fsuid,
1036 (__u64)current->fsgid,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001038 cifs_sb->local_nls,
1039 cifs_sb->mnt_cifs_flags &
1040 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 } else {
1042 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1043 mode, (__u64)-1,
1044 (__u64)-1, 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001045 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001046 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001047 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 }
Steve French3ce53fc2007-06-08 14:55:14 +00001049 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 /* BB to be implemented via Windows secrty descriptors
1051 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
1052 -1, -1, local_nls); */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001053 if (direntry->d_inode) {
Steve French6473a552005-11-29 20:20:10 -08001054 direntry->d_inode->i_mode = mode;
Steve French25741b32005-11-29 22:38:43 -08001055 direntry->d_inode->i_mode |= S_IFDIR;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001056 if (cifs_sb->mnt_cifs_flags &
Steve French6473a552005-11-29 20:20:10 -08001057 CIFS_MOUNT_SET_UID) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001058 direntry->d_inode->i_uid =
Steve French6473a552005-11-29 20:20:10 -08001059 current->fsuid;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001060 direntry->d_inode->i_gid =
Steve French6473a552005-11-29 20:20:10 -08001061 current->fsgid;
1062 }
1063 }
Steve French2a138ebb2005-11-29 21:22:19 -08001064 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001066mkdir_out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 kfree(full_path);
1068 FreeXid(xid);
1069 return rc;
1070}
1071
1072int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1073{
1074 int rc = 0;
1075 int xid;
1076 struct cifs_sb_info *cifs_sb;
1077 struct cifsTconInfo *pTcon;
1078 char *full_path = NULL;
1079 struct cifsInodeInfo *cifsInode;
1080
Steve French26a21b92006-05-31 18:05:34 +00001081 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082
1083 xid = GetXid();
1084
1085 cifs_sb = CIFS_SB(inode->i_sb);
1086 pTcon = cifs_sb->tcon;
1087
Steve French7f573562005-08-30 11:32:14 -07001088 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089 if (full_path == NULL) {
1090 FreeXid(xid);
1091 return -ENOMEM;
1092 }
1093
Steve French737b7582005-04-28 22:41:06 -07001094 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1095 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096
1097 if (!rc) {
Dave Hansen9a53c3a2006-09-30 23:29:03 -07001098 drop_nlink(inode);
Steve French3677db12007-02-26 16:46:11 +00001099 spin_lock(&direntry->d_inode->i_lock);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001100 i_size_write(direntry->d_inode, 0);
Dave Hansence71ec32006-09-30 23:29:06 -07001101 clear_nlink(direntry->d_inode);
Steve French3677db12007-02-26 16:46:11 +00001102 spin_unlock(&direntry->d_inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 }
1104
1105 cifsInode = CIFS_I(direntry->d_inode);
1106 cifsInode->time = 0; /* force revalidate to go get info when
1107 needed */
1108 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1109 current_fs_time(inode->i_sb);
1110
1111 kfree(full_path);
1112 FreeXid(xid);
1113 return rc;
1114}
1115
1116int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1117 struct inode *target_inode, struct dentry *target_direntry)
1118{
1119 char *fromName;
1120 char *toName;
1121 struct cifs_sb_info *cifs_sb_source;
1122 struct cifs_sb_info *cifs_sb_target;
1123 struct cifsTconInfo *pTcon;
1124 int xid;
1125 int rc = 0;
1126
1127 xid = GetXid();
1128
1129 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1130 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1131 pTcon = cifs_sb_source->tcon;
1132
1133 if (pTcon != cifs_sb_target->tcon) {
1134 FreeXid(xid);
1135 return -EXDEV; /* BB actually could be allowed if same server,
1136 but different share.
1137 Might eventually add support for this */
1138 }
1139
1140 /* we already have the rename sem so we do not need to grab it again
1141 here to protect the path integrity */
Steve French7f573562005-08-30 11:32:14 -07001142 fromName = build_path_from_dentry(source_direntry);
1143 toName = build_path_from_dentry(target_direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 if ((fromName == NULL) || (toName == NULL)) {
1145 rc = -ENOMEM;
1146 goto cifs_rename_exit;
1147 }
1148
1149 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
Steve French737b7582005-04-28 22:41:06 -07001150 cifs_sb_source->local_nls,
1151 cifs_sb_source->mnt_cifs_flags &
1152 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 if (rc == -EEXIST) {
1154 /* check if they are the same file because rename of hardlinked
1155 files is a noop */
1156 FILE_UNIX_BASIC_INFO *info_buf_source;
1157 FILE_UNIX_BASIC_INFO *info_buf_target;
1158
1159 info_buf_source =
1160 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1161 if (info_buf_source != NULL) {
1162 info_buf_target = info_buf_source + 1;
Steve Frenchc18c8422007-07-18 23:21:09 +00001163 if (pTcon->unix_ext)
Steve French8e87d4d2006-11-02 03:45:24 +00001164 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001165 info_buf_source,
Steve French8e87d4d2006-11-02 03:45:24 +00001166 cifs_sb_source->local_nls,
1167 cifs_sb_source->mnt_cifs_flags &
1168 CIFS_MOUNT_MAP_SPECIAL_CHR);
1169 /* else rc is still EEXIST so will fall through to
1170 unlink the target and retry rename */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 if (rc == 0) {
1172 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1173 info_buf_target,
Steve French737b7582005-04-28 22:41:06 -07001174 cifs_sb_target->local_nls,
1175 /* remap based on source sb */
1176 cifs_sb_source->mnt_cifs_flags &
1177 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178 }
1179 if ((rc == 0) &&
1180 (info_buf_source->UniqueId ==
1181 info_buf_target->UniqueId)) {
1182 /* do not rename since the files are hardlinked which
1183 is a noop */
1184 } else {
1185 /* we either can not tell the files are hardlinked
1186 (as with Windows servers) or files are not
1187 hardlinked so delete the target manually before
1188 renaming to follow POSIX rather than Windows
1189 semantics */
1190 cifs_unlink(target_inode, target_direntry);
1191 rc = CIFSSMBRename(xid, pTcon, fromName,
1192 toName,
Steve French737b7582005-04-28 22:41:06 -07001193 cifs_sb_source->local_nls,
1194 cifs_sb_source->mnt_cifs_flags
1195 & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 }
1197 kfree(info_buf_source);
1198 } /* if we can not get memory just leave rc as EEXIST */
1199 }
1200
1201 if (rc) {
1202 cFYI(1, ("rename rc %d", rc));
1203 }
1204
1205 if ((rc == -EIO) || (rc == -EEXIST)) {
1206 int oplock = FALSE;
1207 __u16 netfid;
1208
1209 /* BB FIXME Is Generic Read correct for rename? */
1210 /* if renaming directory - we should not say CREATE_NOT_DIR,
1211 need to test renaming open directory, also GENERIC_READ
1212 might not right be right access to request */
1213 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1214 CREATE_NOT_DIR, &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001215 cifs_sb_source->local_nls,
1216 cifs_sb_source->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001217 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001218 if (rc == 0) {
Steve French8e87d4d2006-11-02 03:45:24 +00001219 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001220 cifs_sb_source->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001221 cifs_sb_source->mnt_cifs_flags &
1222 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223 CIFSSMBClose(xid, pTcon, netfid);
1224 }
1225 }
1226
1227cifs_rename_exit:
1228 kfree(fromName);
1229 kfree(toName);
1230 FreeXid(xid);
1231 return rc;
1232}
1233
1234int cifs_revalidate(struct dentry *direntry)
1235{
1236 int xid;
Jeff Laytoncea21802007-11-20 23:19:03 +00001237 int rc = 0, wbrc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 char *full_path;
1239 struct cifs_sb_info *cifs_sb;
1240 struct cifsInodeInfo *cifsInode;
1241 loff_t local_size;
1242 struct timespec local_mtime;
1243 int invalidate_inode = FALSE;
1244
1245 if (direntry->d_inode == NULL)
1246 return -ENOENT;
1247
1248 cifsInode = CIFS_I(direntry->d_inode);
1249
1250 if (cifsInode == NULL)
1251 return -ENOENT;
1252
1253 /* no sense revalidating inode info on file that no one can write */
1254 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1255 return rc;
1256
1257 xid = GetXid();
1258
1259 cifs_sb = CIFS_SB(direntry->d_sb);
1260
1261 /* can not safely grab the rename sem here if rename calls revalidate
1262 since that would deadlock */
Steve French7f573562005-08-30 11:32:14 -07001263 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 if (full_path == NULL) {
1265 FreeXid(xid);
1266 return -ENOMEM;
1267 }
1268 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1269 "jiffies %ld", full_path, direntry->d_inode,
1270 direntry->d_inode->i_count.counter, direntry,
1271 direntry->d_time, jiffies));
1272
1273 if (cifsInode->time == 0) {
1274 /* was set to zero previously to force revalidate */
1275 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1276 lookupCacheEnabled) {
1277 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1278 (direntry->d_inode->i_nlink == 1)) {
1279 kfree(full_path);
1280 FreeXid(xid);
1281 return rc;
1282 } else {
1283 cFYI(1, ("Have to revalidate file due to hardlinks"));
1284 }
1285 }
1286
1287 /* save mtime and size */
1288 local_mtime = direntry->d_inode->i_mtime;
1289 local_size = direntry->d_inode->i_size;
1290
Steve Frenchc18c8422007-07-18 23:21:09 +00001291 if (cifs_sb->tcon->unix_ext) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001293 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294 if (rc) {
1295 cFYI(1, ("error on getting revalidate info %d", rc));
1296/* if (rc != -ENOENT)
1297 rc = 0; */ /* BB should we cache info on
1298 certain errors? */
1299 }
1300 } else {
1301 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001302 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303 if (rc) {
1304 cFYI(1, ("error on getting revalidate info %d", rc));
1305/* if (rc != -ENOENT)
1306 rc = 0; */ /* BB should we cache info on
1307 certain errors? */
1308 }
1309 }
1310 /* should we remap certain errors, access denied?, to zero */
1311
1312 /* if not oplocked, we invalidate inode pages if mtime or file size
1313 had changed on server */
1314
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001315 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 (local_size == direntry->d_inode->i_size)) {
1317 cFYI(1, ("cifs_revalidate - inode unchanged"));
1318 } else {
1319 /* file may have changed on server */
1320 if (cifsInode->clientCanCacheRead) {
1321 /* no need to invalidate inode pages since we were the
1322 only ones who could have modified the file and the
1323 server copy is staler than ours */
1324 } else {
1325 invalidate_inode = TRUE;
1326 }
1327 }
1328
1329 /* can not grab this sem since kernel filesys locking documentation
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001330 indicates i_mutex may be taken by the kernel on lookup and rename
1331 which could deadlock if we grab the i_mutex here as well */
1332/* mutex_lock(&direntry->d_inode->i_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 /* need to write out dirty pages here */
1334 if (direntry->d_inode->i_mapping) {
1335 /* do we need to lock inode until after invalidate completes
1336 below? */
Jeff Laytoncea21802007-11-20 23:19:03 +00001337 wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
1338 if (wbrc)
1339 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340 }
1341 if (invalidate_inode) {
Steve French3abb9272005-11-28 08:16:13 -08001342 /* shrink_dcache not necessary now that cifs dentry ops
1343 are exported for negative dentries */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001344/* if (S_ISDIR(direntry->d_inode->i_mode))
Steve French3abb9272005-11-28 08:16:13 -08001345 shrink_dcache_parent(direntry); */
1346 if (S_ISREG(direntry->d_inode->i_mode)) {
1347 if (direntry->d_inode->i_mapping)
Jeff Laytoncea21802007-11-20 23:19:03 +00001348 wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
1349 if (wbrc)
1350 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
Steve French3abb9272005-11-28 08:16:13 -08001351 /* may eventually have to do this for open files too */
1352 if (list_empty(&(cifsInode->openFileList))) {
1353 /* changed on server - flush read ahead pages */
1354 cFYI(1, ("Invalidating read ahead data on "
1355 "closed file"));
1356 invalidate_remote_inode(direntry->d_inode);
1357 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358 }
1359 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001360/* mutex_unlock(&direntry->d_inode->i_mutex); */
Steve French50c2f752007-07-13 00:33:32 +00001361
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 kfree(full_path);
1363 FreeXid(xid);
1364 return rc;
1365}
1366
1367int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1368 struct kstat *stat)
1369{
1370 int err = cifs_revalidate(dentry);
Steve French5fe14c82006-11-07 19:26:33 +00001371 if (!err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 generic_fillattr(dentry->d_inode, stat);
Steve French5fe14c82006-11-07 19:26:33 +00001373 stat->blksize = CIFS_MAX_MSGSIZE;
1374 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375 return err;
1376}
1377
1378static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1379{
1380 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1381 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1382 struct page *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 int rc = 0;
1384
1385 page = grab_cache_page(mapping, index);
1386 if (!page)
1387 return -ENOMEM;
1388
Steve French7e42ca82007-07-16 17:40:02 +00001389 zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, KM_USER0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 unlock_page(page);
1391 page_cache_release(page);
1392 return rc;
1393}
1394
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001395static int cifs_vmtruncate(struct inode *inode, loff_t offset)
Steve French3677db12007-02-26 16:46:11 +00001396{
1397 struct address_space *mapping = inode->i_mapping;
1398 unsigned long limit;
1399
Steve Frenchba6a46a2007-02-26 20:06:29 +00001400 spin_lock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001401 if (inode->i_size < offset)
1402 goto do_expand;
1403 /*
1404 * truncation of in-use swapfiles is disallowed - it would cause
1405 * subsequent swapout to scribble on the now-freed blocks.
1406 */
Steve Frenchba6a46a2007-02-26 20:06:29 +00001407 if (IS_SWAPFILE(inode)) {
1408 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001409 goto out_busy;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001410 }
Steve French3677db12007-02-26 16:46:11 +00001411 i_size_write(inode, offset);
1412 spin_unlock(&inode->i_lock);
Steve French8064ab42007-08-22 22:12:07 +00001413 /*
1414 * unmap_mapping_range is called twice, first simply for efficiency
1415 * so that truncate_inode_pages does fewer single-page unmaps. However
1416 * after this first call, and before truncate_inode_pages finishes,
1417 * it is possible for private pages to be COWed, which remain after
1418 * truncate_inode_pages finishes, hence the second unmap_mapping_range
1419 * call must be made for correctness.
1420 */
Steve French3677db12007-02-26 16:46:11 +00001421 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1422 truncate_inode_pages(mapping, offset);
Steve French8064ab42007-08-22 22:12:07 +00001423 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
Steve French3677db12007-02-26 16:46:11 +00001424 goto out_truncate;
1425
1426do_expand:
1427 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001428 if (limit != RLIM_INFINITY && offset > limit) {
1429 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001430 goto out_sig;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001431 }
1432 if (offset > inode->i_sb->s_maxbytes) {
1433 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001434 goto out_big;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001435 }
Steve French3677db12007-02-26 16:46:11 +00001436 i_size_write(inode, offset);
Steve Frenchba6a46a2007-02-26 20:06:29 +00001437 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001438out_truncate:
1439 if (inode->i_op && inode->i_op->truncate)
1440 inode->i_op->truncate(inode);
1441 return 0;
1442out_sig:
1443 send_sig(SIGXFSZ, current, 0);
1444out_big:
1445 return -EFBIG;
1446out_busy:
1447 return -ETXTBSY;
1448}
1449
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1451{
1452 int xid;
1453 struct cifs_sb_info *cifs_sb;
1454 struct cifsTconInfo *pTcon;
1455 char *full_path = NULL;
1456 int rc = -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 struct cifsFileInfo *open_file = NULL;
1458 FILE_BASIC_INFO time_buf;
1459 int set_time = FALSE;
Steve French066fcb02007-03-23 00:45:08 +00001460 int set_dosattr = FALSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1462 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1463 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1464 struct cifsInodeInfo *cifsInode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465
1466 xid = GetXid();
1467
Steve French39798772006-05-31 22:40:51 +00001468 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469 direntry->d_name.name, attrs->ia_valid));
Steve French6473a552005-11-29 20:20:10 -08001470
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1472 pTcon = cifs_sb->tcon;
1473
Steve French2a138ebb2005-11-29 21:22:19 -08001474 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
Steve French6473a552005-11-29 20:20:10 -08001475 /* check if we have permission to change attrs */
1476 rc = inode_change_ok(direntry->d_inode, attrs);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001477 if (rc < 0) {
Steve French6473a552005-11-29 20:20:10 -08001478 FreeXid(xid);
1479 return rc;
1480 } else
1481 rc = 0;
1482 }
Steve French50c2f752007-07-13 00:33:32 +00001483
Steve French7f573562005-08-30 11:32:14 -07001484 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 if (full_path == NULL) {
1486 FreeXid(xid);
1487 return -ENOMEM;
1488 }
1489 cifsInode = CIFS_I(direntry->d_inode);
1490
1491 /* BB check if we need to refresh inode from server now ? BB */
1492
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 if (attrs->ia_valid & ATTR_SIZE) {
Jeff Laytoncea21802007-11-20 23:19:03 +00001494 /*
1495 Flush data before changing file size on server. If the
1496 flush returns error, store it to report later and continue.
1497 BB: This should be smarter. Why bother flushing pages that
1498 will be truncated anyway? Also, should we error out here if
1499 the flush returns error?
1500 */
1501 rc = filemap_write_and_wait(direntry->d_inode->i_mapping);
1502 if (rc != 0) {
1503 CIFS_I(direntry->d_inode)->write_behind_rc = rc;
1504 rc = 0;
1505 }
1506
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507 /* To avoid spurious oplock breaks from server, in the case of
1508 inodes that we already have open, avoid doing path based
1509 setting of file size if we can do it by handle.
1510 This keeps our caching token (oplock) and avoids timeouts
1511 when the local oplock break takes longer to flush
1512 writebehind data than the SMB timeout for the SetPathInfo
1513 request would allow */
Steve French39798772006-05-31 22:40:51 +00001514
Steve French6148a742005-10-05 12:23:19 -07001515 open_file = find_writable_file(cifsInode);
1516 if (open_file) {
1517 __u16 nfid = open_file->netfid;
1518 __u32 npid = open_file->pid;
1519 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1520 nfid, npid, FALSE);
Steve French23e7dd72005-10-20 13:44:56 -07001521 atomic_dec(&open_file->wrtPending);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001522 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1523 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve French77159b42007-08-31 01:10:17 +00001524 unsigned int bytes_written;
Steve French6148a742005-10-05 12:23:19 -07001525 rc = CIFSSMBWrite(xid, pTcon,
1526 nfid, 0, attrs->ia_size,
1527 &bytes_written, NULL, NULL,
1528 1 /* 45 seconds */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001529 cFYI(1, ("Wrt seteof rc %d", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001531 } else
Steve French6473a552005-11-29 20:20:10 -08001532 rc = -EINVAL;
1533
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 if (rc != 0) {
1535 /* Set file size by pathname rather than by handle
1536 either because no valid, writeable file handle for
1537 it was found or because there was an error setting
1538 it by handle */
1539 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1540 attrs->ia_size, FALSE,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001541 cifs_sb->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001542 cifs_sb->mnt_cifs_flags &
1543 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenche30dcf32005-09-20 20:49:16 -07001544 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001545 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001546 __u16 netfid;
1547 int oplock = FALSE;
1548
1549 rc = SMBLegacyOpen(xid, pTcon, full_path,
1550 FILE_OPEN,
1551 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1552 CREATE_NOT_DIR, &netfid, &oplock,
1553 NULL, cifs_sb->local_nls,
1554 cifs_sb->mnt_cifs_flags &
1555 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001556 if (rc == 0) {
Steve French77159b42007-08-31 01:10:17 +00001557 unsigned int bytes_written;
Steve Frenche30dcf32005-09-20 20:49:16 -07001558 rc = CIFSSMBWrite(xid, pTcon,
1559 netfid, 0,
1560 attrs->ia_size,
1561 &bytes_written, NULL,
1562 NULL, 1 /* 45 sec */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001563 cFYI(1, ("wrt seteof rc %d", rc));
Steve Frenche30dcf32005-09-20 20:49:16 -07001564 CIFSSMBClose(xid, pTcon, netfid);
1565 }
1566
1567 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568 }
1569
1570 /* Server is ok setting allocation size implicitly - no need
1571 to call:
1572 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1573 cifs_sb->local_nls);
1574 */
1575
1576 if (rc == 0) {
Steve French3677db12007-02-26 16:46:11 +00001577 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 cifs_truncate_page(direntry->d_inode->i_mapping,
1579 direntry->d_inode->i_size);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001580 } else
Steve Frenche30dcf32005-09-20 20:49:16 -07001581 goto cifs_setattr_exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582 }
1583 if (attrs->ia_valid & ATTR_UID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001584 cFYI(1, ("UID changed to %d", attrs->ia_uid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585 uid = attrs->ia_uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 }
1587 if (attrs->ia_valid & ATTR_GID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001588 cFYI(1, ("GID changed to %d", attrs->ia_gid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589 gid = attrs->ia_gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001590 }
1591
1592 time_buf.Attributes = 0;
Jeff Laytond32c4f22007-10-18 03:05:22 -07001593
1594 /* skip mode change if it's just for clearing setuid/setgid */
1595 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
1596 attrs->ia_valid &= ~ATTR_MODE;
1597
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598 if (attrs->ia_valid & ATTR_MODE) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001599 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 mode = attrs->ia_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601 }
1602
Steve Frenchc18c8422007-07-18 23:21:09 +00001603 if ((pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001604 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1605 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
Steve French737b7582005-04-28 22:41:06 -07001606 0 /* dev_t */, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001607 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001608 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 else if (attrs->ia_valid & ATTR_MODE) {
Steve Frenchcdbce9c2005-11-19 21:04:52 -08001610 rc = 0;
Steve French97837582007-12-31 07:47:21 +00001611#ifdef CONFIG_CIFS_EXPERIMENTAL
1612 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1613 rc = mode_to_acl(direntry->d_inode, full_path, mode);
Steve Frenchf6d09982008-01-08 23:18:22 +00001614 else if ((mode & S_IWUGO) == 0) {
Steve French97837582007-12-31 07:47:21 +00001615#else
Steve Frenchf6d09982008-01-08 23:18:22 +00001616 if ((mode & S_IWUGO) == 0) {
Steve French97837582007-12-31 07:47:21 +00001617#endif
Steve Frenchf6d09982008-01-08 23:18:22 +00001618 /* not writeable */
Steve French066fcb02007-03-23 00:45:08 +00001619 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1620 set_dosattr = TRUE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621 time_buf.Attributes =
1622 cpu_to_le32(cifsInode->cifsAttrs |
1623 ATTR_READONLY);
Steve French066fcb02007-03-23 00:45:08 +00001624 }
Steve French5268df22007-04-06 19:28:16 +00001625 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1626 /* If file is readonly on server, we would
1627 not be able to write to it - so if any write
1628 bit is enabled for user or group or other we
1629 need to at least try to remove r/o dos attr */
1630 set_dosattr = TRUE;
1631 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1632 (~ATTR_READONLY));
1633 /* Windows ignores set to zero */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001634 if (time_buf.Attributes == 0)
Steve French5268df22007-04-06 19:28:16 +00001635 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636 }
Steve French97837582007-12-31 07:47:21 +00001637#ifdef CONFIG_CIFS_EXPERIMENTAL
1638 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1639 mode_to_acl(direntry->d_inode, full_path, mode);
1640#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641 }
1642
1643 if (attrs->ia_valid & ATTR_ATIME) {
1644 set_time = TRUE;
1645 time_buf.LastAccessTime =
1646 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1647 } else
1648 time_buf.LastAccessTime = 0;
1649
1650 if (attrs->ia_valid & ATTR_MTIME) {
1651 set_time = TRUE;
1652 time_buf.LastWriteTime =
1653 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1654 } else
1655 time_buf.LastWriteTime = 0;
Steve Frenche30dcf32005-09-20 20:49:16 -07001656 /* Do not set ctime explicitly unless other time
1657 stamps are changed explicitly (i.e. by utime()
1658 since we would then have a mix of client and
1659 server times */
Steve French50c2f752007-07-13 00:33:32 +00001660
Steve Frenche30dcf32005-09-20 20:49:16 -07001661 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001662 set_time = TRUE;
Steve Frenche30dcf32005-09-20 20:49:16 -07001663 /* Although Samba throws this field away
1664 it may be useful to Windows - but we do
1665 not want to set ctime unless some other
1666 timestamp is changing */
Steve French26a21b92006-05-31 18:05:34 +00001667 cFYI(1, ("CIFS - CTIME changed"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001668 time_buf.ChangeTime =
1669 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1670 } else
1671 time_buf.ChangeTime = 0;
1672
Steve French066fcb02007-03-23 00:45:08 +00001673 if (set_time || set_dosattr) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674 time_buf.CreationTime = 0; /* do not change */
1675 /* In the future we should experiment - try setting timestamps
1676 via Handle (SetFileInfo) instead of by path */
1677 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1678 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
Steve French737b7582005-04-28 22:41:06 -07001679 cifs_sb->local_nls,
1680 cifs_sb->mnt_cifs_flags &
1681 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001682 else
1683 rc = -EOPNOTSUPP;
1684
1685 if (rc == -EOPNOTSUPP) {
1686 int oplock = FALSE;
1687 __u16 netfid;
1688
1689 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1690 "times not supported by this server"));
1691 /* BB we could scan to see if we already have it open
1692 and pass in pid of opener to function */
1693 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1694 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1695 CREATE_NOT_DIR, &netfid, &oplock,
Steve French737b7582005-04-28 22:41:06 -07001696 NULL, cifs_sb->local_nls,
1697 cifs_sb->mnt_cifs_flags &
1698 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001699 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1701 netfid);
1702 CIFSSMBClose(xid, pTcon, netfid);
1703 } else {
1704 /* BB For even older servers we could convert time_buf
1705 into old DOS style which uses two second
1706 granularity */
1707
1708 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001709 &time_buf, cifs_sb->local_nls); */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710 }
1711 }
Steve Frenche30dcf32005-09-20 20:49:16 -07001712 /* Even if error on time set, no sense failing the call if
1713 the server would set the time to a reasonable value anyway,
1714 and this check ensures that we are not being called from
1715 sys_utimes in which case we ought to fail the call back to
1716 the user when the server rejects the call */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001717 if ((rc) && (attrs->ia_valid &
Steve Frenche30dcf32005-09-20 20:49:16 -07001718 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1719 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 }
1721
1722 /* do not need local check to inode_check_ok since the server does
1723 that */
1724 if (!rc)
1725 rc = inode_setattr(direntry->d_inode, attrs);
Steve Frenche30dcf32005-09-20 20:49:16 -07001726cifs_setattr_exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727 kfree(full_path);
1728 FreeXid(xid);
1729 return rc;
1730}
1731
Steve French99ee4db2007-02-27 05:35:17 +00001732#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733void cifs_delete_inode(struct inode *inode)
1734{
Steve French26a21b92006-05-31 18:05:34 +00001735 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 /* may have to add back in if and when safe distributed caching of
1737 directories added e.g. via FindNotify */
1738}
Steve French99ee4db2007-02-27 05:35:17 +00001739#endif