blob: 5e8b388be3b672a7130e9e26f8bb954ed8321534 [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);
57 if (tmp_path == NULL) {
58 return -ENOMEM;
59 }
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 Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 16:43:39 -0800227 unsigned int bytes_read;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000228 char *pbuf;
Steve Frenchd6e2f2a2005-11-15 16:43:39 -0800229
230 pbuf = buf;
231
Steve French4523cc32007-04-30 20:13:06 +0000232 if (size == 0) {
Steve Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 16:43:39 -0800285 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd6e2f2a2005-11-15 16:43:39 -0800286 }
287 return rc;
Steve Frenchd6e2f2a2005-11-15 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 Frenchfb8c4b12007-07-10 01:16:18 +0000292static int get_sfu_uid_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 Frencheda3c022005-07-21 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 Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 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 Frenchd6e2f2a2005-11-15 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 French7ba52632007-02-08 18:14:13 +0000514 if (is_size_safe_to_change(cifsInfo, le64_to_cpu(pfindData->EndOfFile))) {
515 /* can not safely shrink the file size here if the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 client is writing to it due to potential races */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000517 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519 /* 512 bytes (2**9) is the fake blocksize that must be
520 used for this calculation */
521 inode->i_blocks = (512 - 1 + le64_to_cpu(
522 pfindData->AllocationSize)) >> 9;
523 }
Steve French3677db12007-02-26 16:46:11 +0000524 spin_unlock(&inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
526 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
527
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000528 /* BB fill in uid and gid here? with help from winbind?
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 or retrieve from NTFS stream extended attribute */
Steve French4523cc32007-04-30 20:13:06 +0000530 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
Steve French9e294f12005-11-17 16:59:21 -0800531 /* fill in uid, gid, mode from server ACL */
Steve French4523cc32007-04-30 20:13:06 +0000532 /* BB FIXME this should also take into account the
533 * default uid specified on mount if present */
Steve French9e294f12005-11-17 16:59:21 -0800534 get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
535 } else if (atomic_read(&cifsInfo->inUse) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 inode->i_uid = cifs_sb->mnt_uid;
537 inode->i_gid = cifs_sb->mnt_gid;
538 /* set so we do not keep refreshing these fields with
539 bad data after user has changed them in memory */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000540 atomic_set(&cifsInfo->inUse, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 }
542
543 if (S_ISREG(inode->i_mode)) {
Steve Frenchd6e2f2a2005-11-15 16:43:39 -0800544 cFYI(1, ("File inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 inode->i_op = &cifs_file_inode_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800546 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
547 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
548 inode->i_fop =
549 &cifs_file_direct_nobrl_ops;
550 else
551 inode->i_fop = &cifs_file_direct_ops;
Steve French4523cc32007-04-30 20:13:06 +0000552 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French8b94bcb2005-11-11 11:41:00 -0800553 inode->i_fop = &cifs_file_nobrl_ops;
554 else /* not direct, send byte range locks */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 inode->i_fop = &cifs_file_ops;
Steve French8b94bcb2005-11-11 11:41:00 -0800556
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000557 if (pTcon->ses->server->maxBuf <
Dave Kleikamp273d81d2006-06-01 19:41:23 +0000558 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
559 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
560 else
561 inode->i_data.a_ops = &cifs_addr_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 } else if (S_ISDIR(inode->i_mode)) {
Steve Frenchd6e2f2a2005-11-15 16:43:39 -0800563 cFYI(1, ("Directory inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 inode->i_op = &cifs_dir_inode_ops;
565 inode->i_fop = &cifs_dir_ops;
566 } else if (S_ISLNK(inode->i_mode)) {
Steve Frenchd6e2f2a2005-11-15 16:43:39 -0800567 cFYI(1, ("Symbolic Link inode"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 inode->i_op = &cifs_symlink_inode_ops;
569 } else {
570 init_special_inode(inode, inode->i_mode,
571 inode->i_rdev);
572 }
573 }
574 kfree(buf);
575 return rc;
576}
577
Steve French7f8ed422007-09-28 22:28:55 +0000578static const struct inode_operations cifs_ipc_inode_ops = {
579 .lookup = cifs_lookup,
580};
581
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582/* gets root inode */
583void cifs_read_inode(struct inode *inode)
584{
Steve French7f8ed422007-09-28 22:28:55 +0000585 int xid, rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 struct cifs_sb_info *cifs_sb;
587
588 cifs_sb = CIFS_SB(inode->i_sb);
589 xid = GetXid();
Steve Frenchc18c8422007-07-18 23:21:09 +0000590
591 if (cifs_sb->tcon->unix_ext)
Steve French7f8ed422007-09-28 22:28:55 +0000592 rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 else
Steve French7f8ed422007-09-28 22:28:55 +0000594 rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
595 if (rc && cifs_sb->tcon->ipc) {
596 cFYI(1, ("ipc connection - fake read inode"));
597 inode->i_mode |= S_IFDIR;
598 inode->i_nlink = 2;
599 inode->i_op = &cifs_ipc_inode_ops;
600 inode->i_fop = &simple_dir_operations;
601 inode->i_uid = cifs_sb->mnt_uid;
602 inode->i_gid = cifs_sb->mnt_gid;
603 }
604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 /* can not call macro FreeXid here since in a void func */
606 _FreeXid(xid);
607}
608
609int cifs_unlink(struct inode *inode, struct dentry *direntry)
610{
611 int rc = 0;
612 int xid;
613 struct cifs_sb_info *cifs_sb;
614 struct cifsTconInfo *pTcon;
615 char *full_path = NULL;
616 struct cifsInodeInfo *cifsInode;
617 FILE_BASIC_INFO *pinfo_buf;
618
Steve French06bcfed2006-03-31 22:43:50 +0000619 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
621 xid = GetXid();
622
Steve French4523cc32007-04-30 20:13:06 +0000623 if (inode)
Steve French6910ab32006-03-31 03:37:08 +0000624 cifs_sb = CIFS_SB(inode->i_sb);
625 else
Steve French06bcfed2006-03-31 22:43:50 +0000626 cifs_sb = CIFS_SB(direntry->d_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 pTcon = cifs_sb->tcon;
628
629 /* Unlink can be called from rename so we can not grab the sem here
630 since we deadlock otherwise */
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800631/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
Steve French7f573562005-08-30 11:32:14 -0700632 full_path = build_path_from_dentry(direntry);
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800633/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 if (full_path == NULL) {
635 FreeXid(xid);
636 return -ENOMEM;
637 }
Steve French2d785a52007-07-15 01:48:57 +0000638
639 if ((pTcon->ses->capabilities & CAP_UNIX) &&
640 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
641 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
642 rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
643 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
644 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
645 cFYI(1, ("posix del rc %d", rc));
646 if ((rc == 0) || (rc == -ENOENT))
647 goto psx_del_no_retry;
648 }
649
Steve French737b7582005-04-28 22:41:06 -0700650 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
651 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French2d785a52007-07-15 01:48:57 +0000652psx_del_no_retry:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700654 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700655 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 } else if (rc == -ENOENT) {
657 d_drop(direntry);
658 } else if (rc == -ETXTBSY) {
659 int oplock = FALSE;
660 __u16 netfid;
661
662 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
663 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
Steve French737b7582005-04-28 22:41:06 -0700664 &netfid, &oplock, NULL, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000665 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700666 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000667 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000669 cifs_sb->local_nls,
670 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700671 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700673 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700674 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 }
676 } else if (rc == -EACCES) {
677 /* try only if r/o attribute set in local lookup data? */
Eric Sesterhenna048d7a2006-02-21 22:33:09 +0000678 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 if (pinfo_buf) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 /* ATTRS set to normal clears r/o bit */
681 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
682 if (!(pTcon->ses->flags & CIFS_SES_NT4))
683 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
684 pinfo_buf,
Steve French737b7582005-04-28 22:41:06 -0700685 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000686 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700687 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 else
689 rc = -EOPNOTSUPP;
690
691 if (rc == -EOPNOTSUPP) {
692 int oplock = FALSE;
693 __u16 netfid;
694 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
695 full_path,
696 (__u16)ATTR_NORMAL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000697 cifs_sb->local_nls);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 For some strange reason it seems that NT4 eats the
699 old setattr call without actually setting the
700 attributes so on to the third attempted workaround
701 */
702
703 /* BB could scan to see if we already have it open
704 and pass in pid of opener to function */
705 rc = CIFSSMBOpen(xid, pTcon, full_path,
706 FILE_OPEN, SYNCHRONIZE |
707 FILE_WRITE_ATTRIBUTES, 0,
708 &netfid, &oplock, NULL,
Steve French737b7582005-04-28 22:41:06 -0700709 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000710 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700711 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000712 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 rc = CIFSSMBSetFileTimes(xid, pTcon,
714 pinfo_buf,
715 netfid);
716 CIFSSMBClose(xid, pTcon, netfid);
717 }
718 }
719 kfree(pinfo_buf);
720 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000721 if (rc == 0) {
722 rc = CIFSSMBDelFile(xid, pTcon, full_path,
723 cifs_sb->local_nls,
724 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700725 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700727 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700728 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 } else if (rc == -ETXTBSY) {
730 int oplock = FALSE;
731 __u16 netfid;
732
733 rc = CIFSSMBOpen(xid, pTcon, full_path,
734 FILE_OPEN, DELETE,
735 CREATE_NOT_DIR |
736 CREATE_DELETE_ON_CLOSE,
737 &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000738 cifs_sb->local_nls,
739 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700740 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000741 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 CIFSSMBRenameOpenFile(xid, pTcon,
743 netfid, NULL,
Steve French737b7582005-04-28 22:41:06 -0700744 cifs_sb->local_nls,
745 cifs_sb->mnt_cifs_flags &
746 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700748 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700749 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 }
751 /* BB if rc = -ETXTBUSY goto the rename logic BB */
752 }
753 }
754 }
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700755 if (direntry->d_inode) {
Steve Frenchb2aeb9d2005-05-17 13:16:18 -0500756 cifsInode = CIFS_I(direntry->d_inode);
757 cifsInode->time = 0; /* will force revalidate to get info
758 when needed */
759 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
760 }
Steve French4523cc32007-04-30 20:13:06 +0000761 if (inode) {
Steve French06bcfed2006-03-31 22:43:50 +0000762 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
763 cifsInode = CIFS_I(inode);
764 cifsInode->time = 0; /* force revalidate of dir as well */
765 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766
767 kfree(full_path);
768 FreeXid(xid);
769 return rc;
770}
771
Steve French2dd29d32007-04-23 22:07:35 +0000772static void posix_fill_in_inode(struct inode *tmp_inode,
773 FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
774{
775 loff_t local_size;
776 struct timespec local_mtime;
777
778 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
779 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
780
781 __u32 type = le32_to_cpu(pData->Type);
782 __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
783 __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
784 cifsInfo->time = jiffies;
785 atomic_inc(&cifsInfo->inUse);
786
787 /* save mtime and size */
788 local_mtime = tmp_inode->i_mtime;
789 local_size = tmp_inode->i_size;
790
791 tmp_inode->i_atime =
792 cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
793 tmp_inode->i_mtime =
794 cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
795 tmp_inode->i_ctime =
796 cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
797
798 tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
799 /* since we set the inode type below we need to mask off type
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000800 to avoid strange results if bits above were corrupt */
801 tmp_inode->i_mode &= ~S_IFMT;
Steve French2dd29d32007-04-23 22:07:35 +0000802 if (type == UNIX_FILE) {
803 *pobject_type = DT_REG;
804 tmp_inode->i_mode |= S_IFREG;
805 } else if (type == UNIX_SYMLINK) {
806 *pobject_type = DT_LNK;
807 tmp_inode->i_mode |= S_IFLNK;
808 } else if (type == UNIX_DIR) {
809 *pobject_type = DT_DIR;
810 tmp_inode->i_mode |= S_IFDIR;
811 } else if (type == UNIX_CHARDEV) {
812 *pobject_type = DT_CHR;
813 tmp_inode->i_mode |= S_IFCHR;
814 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
815 le64_to_cpu(pData->DevMinor) & MINORMASK);
816 } else if (type == UNIX_BLOCKDEV) {
817 *pobject_type = DT_BLK;
818 tmp_inode->i_mode |= S_IFBLK;
819 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
820 le64_to_cpu(pData->DevMinor) & MINORMASK);
821 } else if (type == UNIX_FIFO) {
822 *pobject_type = DT_FIFO;
823 tmp_inode->i_mode |= S_IFIFO;
824 } else if (type == UNIX_SOCKET) {
825 *pobject_type = DT_SOCK;
826 tmp_inode->i_mode |= S_IFSOCK;
827 } else {
828 /* safest to just call it a file */
829 *pobject_type = DT_REG;
830 tmp_inode->i_mode |= S_IFREG;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000831 cFYI(1, ("unknown inode type %d", type));
Steve French2dd29d32007-04-23 22:07:35 +0000832 }
833
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000834#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000835 cFYI(1, ("object type: %d", type));
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000836#endif
Steve French2dd29d32007-04-23 22:07:35 +0000837 tmp_inode->i_uid = le64_to_cpu(pData->Uid);
838 tmp_inode->i_gid = le64_to_cpu(pData->Gid);
839 tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
840
841 spin_lock(&tmp_inode->i_lock);
842 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000843 /* can not safely change the file size here if the
Steve French2dd29d32007-04-23 22:07:35 +0000844 client is writing to it due to potential races */
845 i_size_write(tmp_inode, end_of_file);
846
847 /* 512 bytes (2**9) is the fake blocksize that must be used */
848 /* for this calculation, not the real blocksize */
849 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
850 }
851 spin_unlock(&tmp_inode->i_lock);
852
853 if (S_ISREG(tmp_inode->i_mode)) {
854 cFYI(1, ("File inode"));
855 tmp_inode->i_op = &cifs_file_inode_ops;
856
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000857 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
858 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000859 tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
860 else
861 tmp_inode->i_fop = &cifs_file_direct_ops;
Steve French50c2f752007-07-13 00:33:32 +0000862
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000863 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000864 tmp_inode->i_fop = &cifs_file_nobrl_ops;
865 else
866 tmp_inode->i_fop = &cifs_file_ops;
867
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000868 if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
869 (cifs_sb->tcon->ses->server->maxBuf <
Steve French2dd29d32007-04-23 22:07:35 +0000870 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
871 tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
872 else
873 tmp_inode->i_data.a_ops = &cifs_addr_ops;
874
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000875 if (isNewInode)
876 return; /* No sense invalidating pages for new inode
877 since we we have not started caching
878 readahead file data yet */
Steve French2dd29d32007-04-23 22:07:35 +0000879
880 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
881 (local_size == tmp_inode->i_size)) {
882 cFYI(1, ("inode exists but unchanged"));
883 } else {
884 /* file may have changed on server */
885 cFYI(1, ("invalidate inode, readdir detected change"));
886 invalidate_remote_inode(tmp_inode);
887 }
888 } else if (S_ISDIR(tmp_inode->i_mode)) {
889 cFYI(1, ("Directory inode"));
890 tmp_inode->i_op = &cifs_dir_inode_ops;
891 tmp_inode->i_fop = &cifs_dir_ops;
892 } else if (S_ISLNK(tmp_inode->i_mode)) {
893 cFYI(1, ("Symbolic Link inode"));
894 tmp_inode->i_op = &cifs_symlink_inode_ops;
895/* tmp_inode->i_fop = *//* do not need to set to anything */
896 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000897 cFYI(1, ("Special inode"));
Steve French2dd29d32007-04-23 22:07:35 +0000898 init_special_inode(tmp_inode, tmp_inode->i_mode,
899 tmp_inode->i_rdev);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000900 }
Steve French2dd29d32007-04-23 22:07:35 +0000901}
902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
904{
905 int rc = 0;
906 int xid;
907 struct cifs_sb_info *cifs_sb;
908 struct cifsTconInfo *pTcon;
909 char *full_path = NULL;
910 struct inode *newinode = NULL;
911
Steve French6473a552005-11-29 20:20:10 -0800912 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
914 xid = GetXid();
915
916 cifs_sb = CIFS_SB(inode->i_sb);
917 pTcon = cifs_sb->tcon;
918
Steve French7f573562005-08-30 11:32:14 -0700919 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 if (full_path == NULL) {
921 FreeXid(xid);
922 return -ENOMEM;
923 }
Steve French50c2f752007-07-13 00:33:32 +0000924
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000925 if ((pTcon->ses->capabilities & CAP_UNIX) &&
926 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
Steve French2dd29d32007-04-23 22:07:35 +0000927 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
928 u32 oplock = 0;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000929 FILE_UNIX_BASIC_INFO * pInfo =
Steve French2dd29d32007-04-23 22:07:35 +0000930 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000931 if (pInfo == NULL) {
Steve French2dd29d32007-04-23 22:07:35 +0000932 rc = -ENOMEM;
933 goto mkdir_out;
934 }
Steve French50c2f752007-07-13 00:33:32 +0000935
Jeffa8cd9252007-09-13 18:38:50 +0000936 mode &= ~current->fs->umask;
Steve French2dd29d32007-04-23 22:07:35 +0000937 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
938 mode, NULL /* netfid */, pInfo, &oplock,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000939 full_path, cifs_sb->local_nls,
940 cifs_sb->mnt_cifs_flags &
Steve French2dd29d32007-04-23 22:07:35 +0000941 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchc45d7072007-09-17 02:04:21 +0000942 if (rc == -EOPNOTSUPP) {
943 kfree(pInfo);
944 goto mkdir_retry_old;
945 } else if (rc) {
Steve French2dd29d32007-04-23 22:07:35 +0000946 cFYI(1, ("posix mkdir returned 0x%x", rc));
947 d_drop(direntry);
948 } else {
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000949 int obj_type;
Cyril Gorcunov8f2376a2007-10-14 17:58:43 +0000950 if (pInfo->Type == cpu_to_le32(-1)) {
951 /* no return info, go query for it */
Steve French5a07cdf2007-09-16 23:12:47 +0000952 kfree(pInfo);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000953 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000954 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000955/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
956 to set uid/gid */
Steve French2dd29d32007-04-23 22:07:35 +0000957 inc_nlink(inode);
958 if (pTcon->nocase)
959 direntry->d_op = &cifs_ci_dentry_ops;
960 else
961 direntry->d_op = &cifs_dentry_ops;
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000962
963 newinode = new_inode(inode->i_sb);
Steve French5a07cdf2007-09-16 23:12:47 +0000964 if (newinode == NULL) {
965 kfree(pInfo);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000966 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000967 }
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000968 /* Is an i_ino of zero legal? */
969 /* Are there sanity checks we can use to ensure that
970 the server is really filling in that field? */
971 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
972 newinode->i_ino =
973 (unsigned long)pInfo->UniqueId;
974 } /* note ino incremented to unique num in new_inode */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000975 if (inode->i_sb->s_flags & MS_NOATIME)
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000976 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
977 newinode->i_nlink = 2;
978
979 insert_inode_hash(newinode);
Steve French2dd29d32007-04-23 22:07:35 +0000980 d_instantiate(direntry, newinode);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000981
982 /* we already checked in POSIXCreate whether
983 frame was long enough */
984 posix_fill_in_inode(direntry->d_inode,
Steve French2dd29d32007-04-23 22:07:35 +0000985 pInfo, &obj_type, 1 /* NewInode */);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000986#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000987 cFYI(1, ("instantiated dentry %p %s to inode %p",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000988 direntry, direntry->d_name.name, newinode));
989
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000990 if (newinode->i_nlink != 2)
991 cFYI(1, ("unexpected number of links %d",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000992 newinode->i_nlink));
993#endif
Steve French2dd29d32007-04-23 22:07:35 +0000994 }
995 kfree(pInfo);
996 goto mkdir_out;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000997 }
Steve Frenchc45d7072007-09-17 02:04:21 +0000998mkdir_retry_old:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 /* BB add setting the equivalent of mode via CreateX w/ACLs */
Steve French737b7582005-04-28 22:41:06 -07001000 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
1001 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 if (rc) {
Steve French26a21b92006-05-31 18:05:34 +00001003 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 d_drop(direntry);
1005 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001006mkdir_get_info:
Dave Hansend8c76e62006-09-30 23:29:04 -07001007 inc_nlink(inode);
Steve Frenchc18c8422007-07-18 23:21:09 +00001008 if (pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 rc = cifs_get_inode_info_unix(&newinode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001010 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 else
1012 rc = cifs_get_inode_info(&newinode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001013 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014
Steve Frenchb92327f2005-08-22 20:09:43 -07001015 if (pTcon->nocase)
1016 direntry->d_op = &cifs_ci_dentry_ops;
1017 else
1018 direntry->d_op = &cifs_dentry_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 d_instantiate(direntry, newinode);
Steve French2dd29d32007-04-23 22:07:35 +00001020 /* setting nlink not necessary except in cases where we
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001021 * failed to get it from the server or was set bogus */
Steve French2dd29d32007-04-23 22:07:35 +00001022 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001023 direntry->d_inode->i_nlink = 2;
Steve Frenchc18c8422007-07-18 23:21:09 +00001024 if (pTcon->unix_ext) {
Steve French3ce53fc2007-06-08 14:55:14 +00001025 mode &= ~current->fs->umask;
Steve Frenchd0d2f2d2005-06-02 15:12:36 -07001026 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1028 mode,
Steve French83451872005-12-01 17:12:59 -08001029 (__u64)current->fsuid,
1030 (__u64)current->fsgid,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001032 cifs_sb->local_nls,
1033 cifs_sb->mnt_cifs_flags &
1034 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 } else {
1036 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1037 mode, (__u64)-1,
1038 (__u64)-1, 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001039 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001040 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001041 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 }
Steve French3ce53fc2007-06-08 14:55:14 +00001043 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 /* BB to be implemented via Windows secrty descriptors
1045 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
1046 -1, -1, local_nls); */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001047 if (direntry->d_inode) {
Steve French6473a552005-11-29 20:20:10 -08001048 direntry->d_inode->i_mode = mode;
Steve French25741b32005-11-29 22:38:43 -08001049 direntry->d_inode->i_mode |= S_IFDIR;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001050 if (cifs_sb->mnt_cifs_flags &
Steve French6473a552005-11-29 20:20:10 -08001051 CIFS_MOUNT_SET_UID) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001052 direntry->d_inode->i_uid =
Steve French6473a552005-11-29 20:20:10 -08001053 current->fsuid;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001054 direntry->d_inode->i_gid =
Steve French6473a552005-11-29 20:20:10 -08001055 current->fsgid;
1056 }
1057 }
Steve French2a138ebb2005-11-29 21:22:19 -08001058 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001060mkdir_out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 kfree(full_path);
1062 FreeXid(xid);
1063 return rc;
1064}
1065
1066int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1067{
1068 int rc = 0;
1069 int xid;
1070 struct cifs_sb_info *cifs_sb;
1071 struct cifsTconInfo *pTcon;
1072 char *full_path = NULL;
1073 struct cifsInodeInfo *cifsInode;
1074
Steve French26a21b92006-05-31 18:05:34 +00001075 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076
1077 xid = GetXid();
1078
1079 cifs_sb = CIFS_SB(inode->i_sb);
1080 pTcon = cifs_sb->tcon;
1081
Steve French7f573562005-08-30 11:32:14 -07001082 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 if (full_path == NULL) {
1084 FreeXid(xid);
1085 return -ENOMEM;
1086 }
1087
Steve French737b7582005-04-28 22:41:06 -07001088 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1089 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090
1091 if (!rc) {
Dave Hansen9a53c3a2006-09-30 23:29:03 -07001092 drop_nlink(inode);
Steve French3677db12007-02-26 16:46:11 +00001093 spin_lock(&direntry->d_inode->i_lock);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001094 i_size_write(direntry->d_inode, 0);
Dave Hansence71ec32006-09-30 23:29:06 -07001095 clear_nlink(direntry->d_inode);
Steve French3677db12007-02-26 16:46:11 +00001096 spin_unlock(&direntry->d_inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 }
1098
1099 cifsInode = CIFS_I(direntry->d_inode);
1100 cifsInode->time = 0; /* force revalidate to go get info when
1101 needed */
1102 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1103 current_fs_time(inode->i_sb);
1104
1105 kfree(full_path);
1106 FreeXid(xid);
1107 return rc;
1108}
1109
1110int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1111 struct inode *target_inode, struct dentry *target_direntry)
1112{
1113 char *fromName;
1114 char *toName;
1115 struct cifs_sb_info *cifs_sb_source;
1116 struct cifs_sb_info *cifs_sb_target;
1117 struct cifsTconInfo *pTcon;
1118 int xid;
1119 int rc = 0;
1120
1121 xid = GetXid();
1122
1123 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1124 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1125 pTcon = cifs_sb_source->tcon;
1126
1127 if (pTcon != cifs_sb_target->tcon) {
1128 FreeXid(xid);
1129 return -EXDEV; /* BB actually could be allowed if same server,
1130 but different share.
1131 Might eventually add support for this */
1132 }
1133
1134 /* we already have the rename sem so we do not need to grab it again
1135 here to protect the path integrity */
Steve French7f573562005-08-30 11:32:14 -07001136 fromName = build_path_from_dentry(source_direntry);
1137 toName = build_path_from_dentry(target_direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 if ((fromName == NULL) || (toName == NULL)) {
1139 rc = -ENOMEM;
1140 goto cifs_rename_exit;
1141 }
1142
1143 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
Steve French737b7582005-04-28 22:41:06 -07001144 cifs_sb_source->local_nls,
1145 cifs_sb_source->mnt_cifs_flags &
1146 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 if (rc == -EEXIST) {
1148 /* check if they are the same file because rename of hardlinked
1149 files is a noop */
1150 FILE_UNIX_BASIC_INFO *info_buf_source;
1151 FILE_UNIX_BASIC_INFO *info_buf_target;
1152
1153 info_buf_source =
1154 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1155 if (info_buf_source != NULL) {
1156 info_buf_target = info_buf_source + 1;
Steve Frenchc18c8422007-07-18 23:21:09 +00001157 if (pTcon->unix_ext)
Steve French8e87d4d2006-11-02 03:45:24 +00001158 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001159 info_buf_source,
Steve French8e87d4d2006-11-02 03:45:24 +00001160 cifs_sb_source->local_nls,
1161 cifs_sb_source->mnt_cifs_flags &
1162 CIFS_MOUNT_MAP_SPECIAL_CHR);
1163 /* else rc is still EEXIST so will fall through to
1164 unlink the target and retry rename */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 if (rc == 0) {
1166 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1167 info_buf_target,
Steve French737b7582005-04-28 22:41:06 -07001168 cifs_sb_target->local_nls,
1169 /* remap based on source sb */
1170 cifs_sb_source->mnt_cifs_flags &
1171 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172 }
1173 if ((rc == 0) &&
1174 (info_buf_source->UniqueId ==
1175 info_buf_target->UniqueId)) {
1176 /* do not rename since the files are hardlinked which
1177 is a noop */
1178 } else {
1179 /* we either can not tell the files are hardlinked
1180 (as with Windows servers) or files are not
1181 hardlinked so delete the target manually before
1182 renaming to follow POSIX rather than Windows
1183 semantics */
1184 cifs_unlink(target_inode, target_direntry);
1185 rc = CIFSSMBRename(xid, pTcon, fromName,
1186 toName,
Steve French737b7582005-04-28 22:41:06 -07001187 cifs_sb_source->local_nls,
1188 cifs_sb_source->mnt_cifs_flags
1189 & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190 }
1191 kfree(info_buf_source);
1192 } /* if we can not get memory just leave rc as EEXIST */
1193 }
1194
1195 if (rc) {
1196 cFYI(1, ("rename rc %d", rc));
1197 }
1198
1199 if ((rc == -EIO) || (rc == -EEXIST)) {
1200 int oplock = FALSE;
1201 __u16 netfid;
1202
1203 /* BB FIXME Is Generic Read correct for rename? */
1204 /* if renaming directory - we should not say CREATE_NOT_DIR,
1205 need to test renaming open directory, also GENERIC_READ
1206 might not right be right access to request */
1207 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1208 CREATE_NOT_DIR, &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001209 cifs_sb_source->local_nls,
1210 cifs_sb_source->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001211 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001212 if (rc == 0) {
Steve French8e87d4d2006-11-02 03:45:24 +00001213 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001214 cifs_sb_source->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001215 cifs_sb_source->mnt_cifs_flags &
1216 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 CIFSSMBClose(xid, pTcon, netfid);
1218 }
1219 }
1220
1221cifs_rename_exit:
1222 kfree(fromName);
1223 kfree(toName);
1224 FreeXid(xid);
1225 return rc;
1226}
1227
1228int cifs_revalidate(struct dentry *direntry)
1229{
1230 int xid;
1231 int rc = 0;
1232 char *full_path;
1233 struct cifs_sb_info *cifs_sb;
1234 struct cifsInodeInfo *cifsInode;
1235 loff_t local_size;
1236 struct timespec local_mtime;
1237 int invalidate_inode = FALSE;
1238
1239 if (direntry->d_inode == NULL)
1240 return -ENOENT;
1241
1242 cifsInode = CIFS_I(direntry->d_inode);
1243
1244 if (cifsInode == NULL)
1245 return -ENOENT;
1246
1247 /* no sense revalidating inode info on file that no one can write */
1248 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1249 return rc;
1250
1251 xid = GetXid();
1252
1253 cifs_sb = CIFS_SB(direntry->d_sb);
1254
1255 /* can not safely grab the rename sem here if rename calls revalidate
1256 since that would deadlock */
Steve French7f573562005-08-30 11:32:14 -07001257 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 if (full_path == NULL) {
1259 FreeXid(xid);
1260 return -ENOMEM;
1261 }
1262 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1263 "jiffies %ld", full_path, direntry->d_inode,
1264 direntry->d_inode->i_count.counter, direntry,
1265 direntry->d_time, jiffies));
1266
1267 if (cifsInode->time == 0) {
1268 /* was set to zero previously to force revalidate */
1269 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1270 lookupCacheEnabled) {
1271 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1272 (direntry->d_inode->i_nlink == 1)) {
1273 kfree(full_path);
1274 FreeXid(xid);
1275 return rc;
1276 } else {
1277 cFYI(1, ("Have to revalidate file due to hardlinks"));
1278 }
1279 }
1280
1281 /* save mtime and size */
1282 local_mtime = direntry->d_inode->i_mtime;
1283 local_size = direntry->d_inode->i_size;
1284
Steve Frenchc18c8422007-07-18 23:21:09 +00001285 if (cifs_sb->tcon->unix_ext) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001287 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 if (rc) {
1289 cFYI(1, ("error on getting revalidate info %d", rc));
1290/* if (rc != -ENOENT)
1291 rc = 0; */ /* BB should we cache info on
1292 certain errors? */
1293 }
1294 } else {
1295 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001296 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 if (rc) {
1298 cFYI(1, ("error on getting revalidate info %d", rc));
1299/* if (rc != -ENOENT)
1300 rc = 0; */ /* BB should we cache info on
1301 certain errors? */
1302 }
1303 }
1304 /* should we remap certain errors, access denied?, to zero */
1305
1306 /* if not oplocked, we invalidate inode pages if mtime or file size
1307 had changed on server */
1308
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001309 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 (local_size == direntry->d_inode->i_size)) {
1311 cFYI(1, ("cifs_revalidate - inode unchanged"));
1312 } else {
1313 /* file may have changed on server */
1314 if (cifsInode->clientCanCacheRead) {
1315 /* no need to invalidate inode pages since we were the
1316 only ones who could have modified the file and the
1317 server copy is staler than ours */
1318 } else {
1319 invalidate_inode = TRUE;
1320 }
1321 }
1322
1323 /* can not grab this sem since kernel filesys locking documentation
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001324 indicates i_mutex may be taken by the kernel on lookup and rename
1325 which could deadlock if we grab the i_mutex here as well */
1326/* mutex_lock(&direntry->d_inode->i_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 /* need to write out dirty pages here */
1328 if (direntry->d_inode->i_mapping) {
1329 /* do we need to lock inode until after invalidate completes
1330 below? */
1331 filemap_fdatawrite(direntry->d_inode->i_mapping);
1332 }
1333 if (invalidate_inode) {
Steve French3abb9272005-11-28 08:16:13 -08001334 /* shrink_dcache not necessary now that cifs dentry ops
1335 are exported for negative dentries */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001336/* if (S_ISDIR(direntry->d_inode->i_mode))
Steve French3abb9272005-11-28 08:16:13 -08001337 shrink_dcache_parent(direntry); */
1338 if (S_ISREG(direntry->d_inode->i_mode)) {
1339 if (direntry->d_inode->i_mapping)
1340 filemap_fdatawait(direntry->d_inode->i_mapping);
1341 /* may eventually have to do this for open files too */
1342 if (list_empty(&(cifsInode->openFileList))) {
1343 /* changed on server - flush read ahead pages */
1344 cFYI(1, ("Invalidating read ahead data on "
1345 "closed file"));
1346 invalidate_remote_inode(direntry->d_inode);
1347 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 }
1349 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001350/* mutex_unlock(&direntry->d_inode->i_mutex); */
Steve French50c2f752007-07-13 00:33:32 +00001351
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352 kfree(full_path);
1353 FreeXid(xid);
1354 return rc;
1355}
1356
1357int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1358 struct kstat *stat)
1359{
1360 int err = cifs_revalidate(dentry);
Steve French5fe14c82006-11-07 19:26:33 +00001361 if (!err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 generic_fillattr(dentry->d_inode, stat);
Steve French5fe14c82006-11-07 19:26:33 +00001363 stat->blksize = CIFS_MAX_MSGSIZE;
1364 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 return err;
1366}
1367
1368static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1369{
1370 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1371 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1372 struct page *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 int rc = 0;
1374
1375 page = grab_cache_page(mapping, index);
1376 if (!page)
1377 return -ENOMEM;
1378
Steve French7e42ca82007-07-16 17:40:02 +00001379 zero_user_page(page, offset, PAGE_CACHE_SIZE - offset, KM_USER0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 unlock_page(page);
1381 page_cache_release(page);
1382 return rc;
1383}
1384
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001385static int cifs_vmtruncate(struct inode *inode, loff_t offset)
Steve French3677db12007-02-26 16:46:11 +00001386{
1387 struct address_space *mapping = inode->i_mapping;
1388 unsigned long limit;
1389
Steve Frenchba6a46a2007-02-26 20:06:29 +00001390 spin_lock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001391 if (inode->i_size < offset)
1392 goto do_expand;
1393 /*
1394 * truncation of in-use swapfiles is disallowed - it would cause
1395 * subsequent swapout to scribble on the now-freed blocks.
1396 */
Steve Frenchba6a46a2007-02-26 20:06:29 +00001397 if (IS_SWAPFILE(inode)) {
1398 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001399 goto out_busy;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001400 }
Steve French3677db12007-02-26 16:46:11 +00001401 i_size_write(inode, offset);
1402 spin_unlock(&inode->i_lock);
Steve French8064ab42007-08-22 22:12:07 +00001403 /*
1404 * unmap_mapping_range is called twice, first simply for efficiency
1405 * so that truncate_inode_pages does fewer single-page unmaps. However
1406 * after this first call, and before truncate_inode_pages finishes,
1407 * it is possible for private pages to be COWed, which remain after
1408 * truncate_inode_pages finishes, hence the second unmap_mapping_range
1409 * call must be made for correctness.
1410 */
Steve French3677db12007-02-26 16:46:11 +00001411 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1412 truncate_inode_pages(mapping, offset);
Steve French8064ab42007-08-22 22:12:07 +00001413 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
Steve French3677db12007-02-26 16:46:11 +00001414 goto out_truncate;
1415
1416do_expand:
1417 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001418 if (limit != RLIM_INFINITY && offset > limit) {
1419 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001420 goto out_sig;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001421 }
1422 if (offset > inode->i_sb->s_maxbytes) {
1423 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001424 goto out_big;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001425 }
Steve French3677db12007-02-26 16:46:11 +00001426 i_size_write(inode, offset);
Steve Frenchba6a46a2007-02-26 20:06:29 +00001427 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001428out_truncate:
1429 if (inode->i_op && inode->i_op->truncate)
1430 inode->i_op->truncate(inode);
1431 return 0;
1432out_sig:
1433 send_sig(SIGXFSZ, current, 0);
1434out_big:
1435 return -EFBIG;
1436out_busy:
1437 return -ETXTBSY;
1438}
1439
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1441{
1442 int xid;
1443 struct cifs_sb_info *cifs_sb;
1444 struct cifsTconInfo *pTcon;
1445 char *full_path = NULL;
1446 int rc = -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 struct cifsFileInfo *open_file = NULL;
1448 FILE_BASIC_INFO time_buf;
1449 int set_time = FALSE;
Steve French066fcb02007-03-23 00:45:08 +00001450 int set_dosattr = FALSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1452 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1453 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1454 struct cifsInodeInfo *cifsInode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455
1456 xid = GetXid();
1457
Steve French39798772006-05-31 22:40:51 +00001458 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 direntry->d_name.name, attrs->ia_valid));
Steve French6473a552005-11-29 20:20:10 -08001460
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1462 pTcon = cifs_sb->tcon;
1463
Steve French2a138ebb2005-11-29 21:22:19 -08001464 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
Steve French6473a552005-11-29 20:20:10 -08001465 /* check if we have permission to change attrs */
1466 rc = inode_change_ok(direntry->d_inode, attrs);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001467 if (rc < 0) {
Steve French6473a552005-11-29 20:20:10 -08001468 FreeXid(xid);
1469 return rc;
1470 } else
1471 rc = 0;
1472 }
Steve French50c2f752007-07-13 00:33:32 +00001473
Steve French7f573562005-08-30 11:32:14 -07001474 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 if (full_path == NULL) {
1476 FreeXid(xid);
1477 return -ENOMEM;
1478 }
1479 cifsInode = CIFS_I(direntry->d_inode);
1480
1481 /* BB check if we need to refresh inode from server now ? BB */
1482
1483 /* need to flush data before changing file size on server */
OGAWA Hirofumi28fd1292006-01-08 01:02:14 -08001484 filemap_write_and_wait(direntry->d_inode->i_mapping);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485
1486 if (attrs->ia_valid & ATTR_SIZE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 /* To avoid spurious oplock breaks from server, in the case of
1488 inodes that we already have open, avoid doing path based
1489 setting of file size if we can do it by handle.
1490 This keeps our caching token (oplock) and avoids timeouts
1491 when the local oplock break takes longer to flush
1492 writebehind data than the SMB timeout for the SetPathInfo
1493 request would allow */
Steve French39798772006-05-31 22:40:51 +00001494
Steve French6148a742005-10-05 12:23:19 -07001495 open_file = find_writable_file(cifsInode);
1496 if (open_file) {
1497 __u16 nfid = open_file->netfid;
1498 __u32 npid = open_file->pid;
1499 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1500 nfid, npid, FALSE);
Steve French23e7dd72005-10-20 13:44:56 -07001501 atomic_dec(&open_file->wrtPending);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001502 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1503 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve French77159b42007-08-31 01:10:17 +00001504 unsigned int bytes_written;
Steve French6148a742005-10-05 12:23:19 -07001505 rc = CIFSSMBWrite(xid, pTcon,
1506 nfid, 0, attrs->ia_size,
1507 &bytes_written, NULL, NULL,
1508 1 /* 45 seconds */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001509 cFYI(1, ("Wrt seteof rc %d", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001511 } else
Steve French6473a552005-11-29 20:20:10 -08001512 rc = -EINVAL;
1513
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 if (rc != 0) {
1515 /* Set file size by pathname rather than by handle
1516 either because no valid, writeable file handle for
1517 it was found or because there was an error setting
1518 it by handle */
1519 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1520 attrs->ia_size, FALSE,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001521 cifs_sb->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001522 cifs_sb->mnt_cifs_flags &
1523 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenche30dcf32005-09-20 20:49:16 -07001524 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001525 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001526 __u16 netfid;
1527 int oplock = FALSE;
1528
1529 rc = SMBLegacyOpen(xid, pTcon, full_path,
1530 FILE_OPEN,
1531 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1532 CREATE_NOT_DIR, &netfid, &oplock,
1533 NULL, cifs_sb->local_nls,
1534 cifs_sb->mnt_cifs_flags &
1535 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001536 if (rc == 0) {
Steve French77159b42007-08-31 01:10:17 +00001537 unsigned int bytes_written;
Steve Frenche30dcf32005-09-20 20:49:16 -07001538 rc = CIFSSMBWrite(xid, pTcon,
1539 netfid, 0,
1540 attrs->ia_size,
1541 &bytes_written, NULL,
1542 NULL, 1 /* 45 sec */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001543 cFYI(1, ("wrt seteof rc %d", rc));
Steve Frenche30dcf32005-09-20 20:49:16 -07001544 CIFSSMBClose(xid, pTcon, netfid);
1545 }
1546
1547 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 }
1549
1550 /* Server is ok setting allocation size implicitly - no need
1551 to call:
1552 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1553 cifs_sb->local_nls);
1554 */
1555
1556 if (rc == 0) {
Steve French3677db12007-02-26 16:46:11 +00001557 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558 cifs_truncate_page(direntry->d_inode->i_mapping,
1559 direntry->d_inode->i_size);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001560 } else
Steve Frenche30dcf32005-09-20 20:49:16 -07001561 goto cifs_setattr_exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 }
1563 if (attrs->ia_valid & ATTR_UID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001564 cFYI(1, ("UID changed to %d", attrs->ia_uid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 uid = attrs->ia_uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001566 }
1567 if (attrs->ia_valid & ATTR_GID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001568 cFYI(1, ("GID changed to %d", attrs->ia_gid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569 gid = attrs->ia_gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570 }
1571
1572 time_buf.Attributes = 0;
Jeff Laytond32c4f22007-10-18 03:05:22 -07001573
1574 /* skip mode change if it's just for clearing setuid/setgid */
1575 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
1576 attrs->ia_valid &= ~ATTR_MODE;
1577
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 if (attrs->ia_valid & ATTR_MODE) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001579 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001580 mode = attrs->ia_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001581 }
1582
Steve Frenchc18c8422007-07-18 23:21:09 +00001583 if ((pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001584 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1585 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
Steve French737b7582005-04-28 22:41:06 -07001586 0 /* dev_t */, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001587 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001588 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589 else if (attrs->ia_valid & ATTR_MODE) {
Steve Frenchcdbce9c2005-11-19 21:04:52 -08001590 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591 if ((mode & S_IWUGO) == 0) /* not writeable */ {
Steve French066fcb02007-03-23 00:45:08 +00001592 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1593 set_dosattr = TRUE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594 time_buf.Attributes =
1595 cpu_to_le32(cifsInode->cifsAttrs |
1596 ATTR_READONLY);
Steve French066fcb02007-03-23 00:45:08 +00001597 }
Steve French5268df22007-04-06 19:28:16 +00001598 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1599 /* If file is readonly on server, we would
1600 not be able to write to it - so if any write
1601 bit is enabled for user or group or other we
1602 need to at least try to remove r/o dos attr */
1603 set_dosattr = TRUE;
1604 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1605 (~ATTR_READONLY));
1606 /* Windows ignores set to zero */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001607 if (time_buf.Attributes == 0)
Steve French5268df22007-04-06 19:28:16 +00001608 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 }
1610 /* BB to be implemented -
1611 via Windows security descriptors or streams */
1612 /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
1613 cifs_sb->local_nls); */
1614 }
1615
1616 if (attrs->ia_valid & ATTR_ATIME) {
1617 set_time = TRUE;
1618 time_buf.LastAccessTime =
1619 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1620 } else
1621 time_buf.LastAccessTime = 0;
1622
1623 if (attrs->ia_valid & ATTR_MTIME) {
1624 set_time = TRUE;
1625 time_buf.LastWriteTime =
1626 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1627 } else
1628 time_buf.LastWriteTime = 0;
Steve Frenche30dcf32005-09-20 20:49:16 -07001629 /* Do not set ctime explicitly unless other time
1630 stamps are changed explicitly (i.e. by utime()
1631 since we would then have a mix of client and
1632 server times */
Steve French50c2f752007-07-13 00:33:32 +00001633
Steve Frenche30dcf32005-09-20 20:49:16 -07001634 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635 set_time = TRUE;
Steve Frenche30dcf32005-09-20 20:49:16 -07001636 /* Although Samba throws this field away
1637 it may be useful to Windows - but we do
1638 not want to set ctime unless some other
1639 timestamp is changing */
Steve French26a21b92006-05-31 18:05:34 +00001640 cFYI(1, ("CIFS - CTIME changed"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641 time_buf.ChangeTime =
1642 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1643 } else
1644 time_buf.ChangeTime = 0;
1645
Steve French066fcb02007-03-23 00:45:08 +00001646 if (set_time || set_dosattr) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647 time_buf.CreationTime = 0; /* do not change */
1648 /* In the future we should experiment - try setting timestamps
1649 via Handle (SetFileInfo) instead of by path */
1650 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1651 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
Steve French737b7582005-04-28 22:41:06 -07001652 cifs_sb->local_nls,
1653 cifs_sb->mnt_cifs_flags &
1654 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 else
1656 rc = -EOPNOTSUPP;
1657
1658 if (rc == -EOPNOTSUPP) {
1659 int oplock = FALSE;
1660 __u16 netfid;
1661
1662 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1663 "times not supported by this server"));
1664 /* BB we could scan to see if we already have it open
1665 and pass in pid of opener to function */
1666 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1667 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1668 CREATE_NOT_DIR, &netfid, &oplock,
Steve French737b7582005-04-28 22:41:06 -07001669 NULL, cifs_sb->local_nls,
1670 cifs_sb->mnt_cifs_flags &
1671 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001672 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1674 netfid);
1675 CIFSSMBClose(xid, pTcon, netfid);
1676 } else {
1677 /* BB For even older servers we could convert time_buf
1678 into old DOS style which uses two second
1679 granularity */
1680
1681 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001682 &time_buf, cifs_sb->local_nls); */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 }
1684 }
Steve Frenche30dcf32005-09-20 20:49:16 -07001685 /* Even if error on time set, no sense failing the call if
1686 the server would set the time to a reasonable value anyway,
1687 and this check ensures that we are not being called from
1688 sys_utimes in which case we ought to fail the call back to
1689 the user when the server rejects the call */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001690 if ((rc) && (attrs->ia_valid &
Steve Frenche30dcf32005-09-20 20:49:16 -07001691 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1692 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693 }
1694
1695 /* do not need local check to inode_check_ok since the server does
1696 that */
1697 if (!rc)
1698 rc = inode_setattr(direntry->d_inode, attrs);
Steve Frenche30dcf32005-09-20 20:49:16 -07001699cifs_setattr_exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700 kfree(full_path);
1701 FreeXid(xid);
1702 return rc;
1703}
1704
Steve French99ee4db2007-02-27 05:35:17 +00001705#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706void cifs_delete_inode(struct inode *inode)
1707{
Steve French26a21b92006-05-31 18:05:34 +00001708 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 /* may have to add back in if and when safe distributed caching of
1710 directories added e.g. via FindNotify */
1711}
Steve French99ee4db2007-02-27 05:35:17 +00001712#endif