Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/inode.c |
| 3 | * |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2007 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #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 | |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 32 | |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 33 | static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral) |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 34 | { |
| 35 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 36 | |
| 37 | switch (inode->i_mode & S_IFMT) { |
| 38 | case S_IFREG: |
| 39 | inode->i_op = &cifs_file_inode_ops; |
| 40 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 41 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 42 | inode->i_fop = &cifs_file_direct_nobrl_ops; |
| 43 | else |
| 44 | inode->i_fop = &cifs_file_direct_ops; |
| 45 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 46 | inode->i_fop = &cifs_file_nobrl_ops; |
| 47 | else { /* not direct, send byte range locks */ |
| 48 | inode->i_fop = &cifs_file_ops; |
| 49 | } |
| 50 | |
| 51 | |
| 52 | /* check if server can support readpages */ |
| 53 | if (cifs_sb->tcon->ses->server->maxBuf < |
| 54 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 55 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 56 | else |
| 57 | inode->i_data.a_ops = &cifs_addr_ops; |
| 58 | break; |
| 59 | case S_IFDIR: |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 60 | #ifdef CONFIG_CIFS_DFS_UPCALL |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 61 | if (is_dfs_referral) { |
| 62 | inode->i_op = &cifs_dfs_referral_inode_operations; |
| 63 | } else { |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 64 | #else /* NO DFS support, treat as a directory */ |
| 65 | { |
| 66 | #endif |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 67 | inode->i_op = &cifs_dir_inode_ops; |
| 68 | inode->i_fop = &cifs_dir_ops; |
| 69 | } |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 70 | break; |
| 71 | case S_IFLNK: |
| 72 | inode->i_op = &cifs_symlink_inode_ops; |
| 73 | break; |
| 74 | default: |
| 75 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 80 | static void cifs_unix_info_to_inode(struct inode *inode, |
| 81 | FILE_UNIX_BASIC_INFO *info, int force_uid_gid) |
| 82 | { |
| 83 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 84 | struct cifsInodeInfo *cifsInfo = CIFS_I(inode); |
| 85 | __u64 num_of_bytes = le64_to_cpu(info->NumOfBytes); |
| 86 | __u64 end_of_file = le64_to_cpu(info->EndOfFile); |
| 87 | |
| 88 | inode->i_atime = cifs_NTtimeToUnix(le64_to_cpu(info->LastAccessTime)); |
| 89 | inode->i_mtime = |
| 90 | cifs_NTtimeToUnix(le64_to_cpu(info->LastModificationTime)); |
| 91 | inode->i_ctime = cifs_NTtimeToUnix(le64_to_cpu(info->LastStatusChange)); |
| 92 | inode->i_mode = le64_to_cpu(info->Permissions); |
| 93 | |
| 94 | /* |
| 95 | * Since we set the inode type below we need to mask off |
| 96 | * to avoid strange results if bits set above. |
| 97 | */ |
| 98 | inode->i_mode &= ~S_IFMT; |
| 99 | switch (le32_to_cpu(info->Type)) { |
| 100 | case UNIX_FILE: |
| 101 | inode->i_mode |= S_IFREG; |
| 102 | break; |
| 103 | case UNIX_SYMLINK: |
| 104 | inode->i_mode |= S_IFLNK; |
| 105 | break; |
| 106 | case UNIX_DIR: |
| 107 | inode->i_mode |= S_IFDIR; |
| 108 | break; |
| 109 | case UNIX_CHARDEV: |
| 110 | inode->i_mode |= S_IFCHR; |
| 111 | inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 112 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 113 | break; |
| 114 | case UNIX_BLOCKDEV: |
| 115 | inode->i_mode |= S_IFBLK; |
| 116 | inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 117 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 118 | break; |
| 119 | case UNIX_FIFO: |
| 120 | inode->i_mode |= S_IFIFO; |
| 121 | break; |
| 122 | case UNIX_SOCKET: |
| 123 | inode->i_mode |= S_IFSOCK; |
| 124 | break; |
| 125 | default: |
| 126 | /* safest to call it a file if we do not know */ |
| 127 | inode->i_mode |= S_IFREG; |
| 128 | cFYI(1, ("unknown type %d", le32_to_cpu(info->Type))); |
| 129 | break; |
| 130 | } |
| 131 | |
| 132 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) && |
| 133 | !force_uid_gid) |
| 134 | inode->i_uid = cifs_sb->mnt_uid; |
| 135 | else |
| 136 | inode->i_uid = le64_to_cpu(info->Uid); |
| 137 | |
| 138 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) && |
| 139 | !force_uid_gid) |
| 140 | inode->i_gid = cifs_sb->mnt_gid; |
| 141 | else |
| 142 | inode->i_gid = le64_to_cpu(info->Gid); |
| 143 | |
| 144 | inode->i_nlink = le64_to_cpu(info->Nlinks); |
| 145 | |
| 146 | spin_lock(&inode->i_lock); |
| 147 | if (is_size_safe_to_change(cifsInfo, end_of_file)) { |
| 148 | /* |
| 149 | * We can not safely change the file size here if the client |
| 150 | * is writing to it due to potential races. |
| 151 | */ |
| 152 | i_size_write(inode, end_of_file); |
| 153 | |
| 154 | /* |
| 155 | * i_blocks is not related to (i_size / i_blksize), |
| 156 | * but instead 512 byte (2**9) size is required for |
| 157 | * calculating num blocks. |
| 158 | */ |
| 159 | inode->i_blocks = (512 - 1 + num_of_bytes) >> 9; |
| 160 | } |
| 161 | spin_unlock(&inode->i_lock); |
| 162 | } |
| 163 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 164 | |
| 165 | /* |
| 166 | * Needed to setup inode data for the directory which is the |
| 167 | * junction to the new submount (ie to setup the fake directory |
| 168 | * which represents a DFS referral) |
| 169 | */ |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 170 | static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat, |
| 171 | struct super_block *sb) |
| 172 | { |
| 173 | struct inode *pinode = NULL; |
| 174 | |
Dave Jones | 0a891ad | 2008-05-22 14:20:21 +0000 | [diff] [blame] | 175 | memset(pfnd_dat, 0, sizeof(FILE_UNIX_BASIC_INFO)); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 176 | |
| 177 | /* __le64 pfnd_dat->EndOfFile = cpu_to_le64(0); |
| 178 | __le64 pfnd_dat->NumOfBytes = cpu_to_le64(0); |
| 179 | __u64 UniqueId = 0; */ |
| 180 | pfnd_dat->LastStatusChange = |
| 181 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 182 | pfnd_dat->LastAccessTime = |
| 183 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 184 | pfnd_dat->LastModificationTime = |
| 185 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 186 | pfnd_dat->Type = cpu_to_le32(UNIX_DIR); |
| 187 | pfnd_dat->Permissions = cpu_to_le64(S_IXUGO | S_IRWXU); |
| 188 | pfnd_dat->Nlinks = cpu_to_le64(2); |
| 189 | if (sb->s_root) |
| 190 | pinode = sb->s_root->d_inode; |
| 191 | if (pinode == NULL) |
| 192 | return; |
| 193 | |
| 194 | /* fill in default values for the remaining based on root |
| 195 | inode since we can not query the server for this inode info */ |
| 196 | pfnd_dat->DevMajor = cpu_to_le64(MAJOR(pinode->i_rdev)); |
| 197 | pfnd_dat->DevMinor = cpu_to_le64(MINOR(pinode->i_rdev)); |
| 198 | pfnd_dat->Uid = cpu_to_le64(pinode->i_uid); |
| 199 | pfnd_dat->Gid = cpu_to_le64(pinode->i_gid); |
| 200 | } |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | int cifs_get_inode_info_unix(struct inode **pinode, |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 203 | const unsigned char *full_path, struct super_block *sb, int xid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
| 205 | int rc = 0; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 206 | FILE_UNIX_BASIC_INFO find_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | struct cifsTconInfo *pTcon; |
| 208 | struct inode *inode; |
| 209 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 210 | bool is_dfs_referral = false; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 211 | struct cifsInodeInfo *cifsInfo; |
| 212 | __u64 num_of_bytes; |
| 213 | __u64 end_of_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
| 215 | pTcon = cifs_sb->tcon; |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 216 | cFYI(1, ("Getting info on %s", full_path)); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* could have done a find first instead but this returns more info */ |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 219 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &find_data, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 220 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 221 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | if (rc) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 223 | if (rc == -EREMOTE && !is_dfs_referral) { |
| 224 | is_dfs_referral = true; |
Steve French | 397d71d | 2008-05-21 03:49:46 +0000 | [diff] [blame] | 225 | cFYI(DBG2, ("DFS ref")); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 226 | /* for DFS, server does not give us real inode data */ |
| 227 | fill_fake_finddataunix(&find_data, sb); |
| 228 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 231 | num_of_bytes = le64_to_cpu(find_data.NumOfBytes); |
| 232 | end_of_file = le64_to_cpu(find_data.EndOfFile); |
| 233 | |
| 234 | /* get new inode */ |
| 235 | if (*pinode == NULL) { |
| 236 | *pinode = new_inode(sb); |
| 237 | if (*pinode == NULL) { |
| 238 | rc = -ENOMEM; |
| 239 | goto cgiiu_exit; |
| 240 | } |
| 241 | /* Is an i_ino of zero legal? */ |
| 242 | /* note ino incremented to unique num in new_inode */ |
| 243 | /* Are there sanity checks we can use to ensure that |
| 244 | the server is really filling in that field? */ |
| 245 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
| 246 | (*pinode)->i_ino = (unsigned long)find_data.UniqueId; |
| 247 | |
| 248 | if (sb->s_flags & MS_NOATIME) |
| 249 | (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; |
| 250 | |
| 251 | insert_inode_hash(*pinode); |
| 252 | } |
| 253 | |
| 254 | inode = *pinode; |
| 255 | cifsInfo = CIFS_I(inode); |
| 256 | |
| 257 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
| 258 | cifsInfo->time = jiffies; |
| 259 | cFYI(1, ("New time %ld", cifsInfo->time)); |
| 260 | /* this is ok to set on every inode revalidate */ |
| 261 | atomic_set(&cifsInfo->inUse, 1); |
| 262 | |
| 263 | cifs_unix_info_to_inode(inode, &find_data, 0); |
| 264 | |
| 265 | if (num_of_bytes < end_of_file) |
| 266 | cFYI(1, ("allocation size less than end of file")); |
| 267 | cFYI(1, ("Size %ld and blocks %llu", |
| 268 | (unsigned long) inode->i_size, |
| 269 | (unsigned long long)inode->i_blocks)); |
| 270 | |
| 271 | cifs_set_ops(inode, is_dfs_referral); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 272 | cgiiu_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return rc; |
| 274 | } |
| 275 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 276 | static int decode_sfu_inode(struct inode *inode, __u64 size, |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 277 | const unsigned char *path, |
| 278 | struct cifs_sb_info *cifs_sb, int xid) |
| 279 | { |
| 280 | int rc; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 281 | int oplock = 0; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 282 | __u16 netfid; |
| 283 | struct cifsTconInfo *pTcon = cifs_sb->tcon; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 284 | char buf[24]; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 285 | unsigned int bytes_read; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 286 | char *pbuf; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 287 | |
| 288 | pbuf = buf; |
| 289 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 290 | if (size == 0) { |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 291 | inode->i_mode |= S_IFIFO; |
| 292 | return 0; |
| 293 | } else if (size < 8) { |
| 294 | return -EINVAL; /* EOPNOTSUPP? */ |
| 295 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 296 | |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 297 | rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ, |
| 298 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 299 | cifs_sb->local_nls, |
| 300 | cifs_sb->mnt_cifs_flags & |
| 301 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 302 | if (rc == 0) { |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 303 | int buf_type = CIFS_NO_BUFFER; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 304 | /* Read header */ |
| 305 | rc = CIFSSMBRead(xid, pTcon, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 306 | netfid, |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 307 | 24 /* length */, 0 /* offset */, |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 308 | &bytes_read, &pbuf, &buf_type); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 309 | if ((rc == 0) && (bytes_read >= 8)) { |
| 310 | if (memcmp("IntxBLK", pbuf, 8) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 311 | cFYI(1, ("Block device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 312 | inode->i_mode |= S_IFBLK; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 313 | if (bytes_read == 24) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 314 | /* we have enough to decode dev num */ |
| 315 | __u64 mjr; /* major */ |
| 316 | __u64 mnr; /* minor */ |
| 317 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 318 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 319 | inode->i_rdev = MKDEV(mjr, mnr); |
| 320 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 321 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 322 | cFYI(1, ("Char device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 323 | inode->i_mode |= S_IFCHR; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 324 | if (bytes_read == 24) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 325 | /* we have enough to decode dev num */ |
| 326 | __u64 mjr; /* major */ |
| 327 | __u64 mnr; /* minor */ |
| 328 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 329 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 330 | inode->i_rdev = MKDEV(mjr, mnr); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 331 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 332 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 333 | cFYI(1, ("Symlink")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 334 | inode->i_mode |= S_IFLNK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 335 | } else { |
| 336 | inode->i_mode |= S_IFREG; /* file? */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 337 | rc = -EOPNOTSUPP; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 338 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 339 | } else { |
| 340 | inode->i_mode |= S_IFREG; /* then it is a file */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 341 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
| 342 | } |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 343 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 344 | } |
| 345 | return rc; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 346 | } |
| 347 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 348 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
| 349 | |
Steve French | 953f868 | 2007-10-31 04:54:42 +0000 | [diff] [blame] | 350 | static int get_sfu_mode(struct inode *inode, |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 351 | const unsigned char *path, |
| 352 | struct cifs_sb_info *cifs_sb, int xid) |
| 353 | { |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 354 | #ifdef CONFIG_CIFS_XATTR |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 355 | ssize_t rc; |
| 356 | char ea_value[4]; |
| 357 | __u32 mode; |
| 358 | |
| 359 | rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS", |
| 360 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 361 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 362 | if (rc < 0) |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 363 | return (int)rc; |
| 364 | else if (rc > 3) { |
| 365 | mode = le32_to_cpu(*((__le32 *)ea_value)); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 366 | inode->i_mode &= ~SFBITS_MASK; |
| 367 | cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode)); |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 368 | inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 369 | cFYI(1, ("special mode bits 0%o", mode)); |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 370 | return 0; |
| 371 | } else { |
| 372 | return 0; |
| 373 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 374 | #else |
| 375 | return -EOPNOTSUPP; |
| 376 | #endif |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 377 | } |
| 378 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 379 | /* |
| 380 | * Needed to setup inode data for the directory which is the |
| 381 | * junction to the new submount (ie to setup the fake directory |
| 382 | * which represents a DFS referral) |
| 383 | */ |
| 384 | static void fill_fake_finddata(FILE_ALL_INFO *pfnd_dat, |
| 385 | struct super_block *sb) |
| 386 | { |
Dave Jones | 0a891ad | 2008-05-22 14:20:21 +0000 | [diff] [blame] | 387 | memset(pfnd_dat, 0, sizeof(FILE_ALL_INFO)); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 388 | |
| 389 | /* __le64 pfnd_dat->AllocationSize = cpu_to_le64(0); |
| 390 | __le64 pfnd_dat->EndOfFile = cpu_to_le64(0); |
| 391 | __u8 pfnd_dat->DeletePending = 0; |
| 392 | __u8 pfnd_data->Directory = 0; |
| 393 | __le32 pfnd_dat->EASize = 0; |
| 394 | __u64 pfnd_dat->IndexNumber = 0; |
| 395 | __u64 pfnd_dat->IndexNumber1 = 0; */ |
| 396 | pfnd_dat->CreationTime = |
| 397 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 398 | pfnd_dat->LastAccessTime = |
| 399 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 400 | pfnd_dat->LastWriteTime = |
| 401 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 402 | pfnd_dat->ChangeTime = |
| 403 | cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); |
| 404 | pfnd_dat->Attributes = cpu_to_le32(ATTR_DIRECTORY); |
| 405 | pfnd_dat->NumberOfLinks = cpu_to_le32(2); |
| 406 | } |
| 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | int cifs_get_inode_info(struct inode **pinode, |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 409 | const unsigned char *full_path, FILE_ALL_INFO *pfindData, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 410 | struct super_block *sb, int xid, const __u16 *pfid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | { |
| 412 | int rc = 0; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 413 | __u32 attr; |
| 414 | struct cifsInodeInfo *cifsInfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | struct cifsTconInfo *pTcon; |
| 416 | struct inode *inode; |
| 417 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | char *buf = NULL; |
Steve French | 5ade9de | 2008-05-02 20:56:23 +0000 | [diff] [blame] | 419 | bool adjustTZ = false; |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 420 | bool is_dfs_referral = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | pTcon = cifs_sb->tcon; |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 423 | cFYI(1, ("Getting info on %s", full_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 425 | if ((pfindData == NULL) && (*pinode != NULL)) { |
| 426 | if (CIFS_I(*pinode)->clientCanCacheRead) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 427 | cFYI(1, ("No need to revalidate cached inode sizes")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | return rc; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /* if file info not passed in then get it from server */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 433 | if (pfindData == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 435 | if (buf == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | return -ENOMEM; |
| 437 | pfindData = (FILE_ALL_INFO *)buf; |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | /* could do find first instead but this returns more info */ |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 440 | rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 441 | 0 /* not legacy */, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 442 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 443 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 444 | /* BB optimize code so we do not make the above call |
| 445 | when server claims no NT SMB support and the above call |
| 446 | failed at least once - set flag in tcon or mount */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 447 | if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 448 | rc = SMBQueryInformation(xid, pTcon, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 449 | pfindData, cifs_sb->local_nls, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 450 | cifs_sb->mnt_cifs_flags & |
| 451 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 452 | adjustTZ = true; |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 453 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | } |
| 455 | /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 456 | if (rc == -EREMOTE) { |
| 457 | is_dfs_referral = true; |
| 458 | fill_fake_finddata(pfindData, sb); |
| 459 | rc = 0; |
| 460 | } else if (rc) |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 461 | goto cgii_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 463 | attr = le32_to_cpu(pfindData->Attributes); |
| 464 | |
| 465 | /* get new inode */ |
| 466 | if (*pinode == NULL) { |
| 467 | *pinode = new_inode(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | if (*pinode == NULL) { |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 469 | rc = -ENOMEM; |
| 470 | goto cgii_exit; |
| 471 | } |
| 472 | /* Is an i_ino of zero legal? Can we use that to check |
| 473 | if the server supports returning inode numbers? Are |
| 474 | there other sanity checks we can use to ensure that |
| 475 | the server is really filling in that field? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 477 | /* We can not use the IndexNumber field by default from |
| 478 | Windows or Samba (in ALL_INFO buf) but we can request |
| 479 | it explicitly. It may not be unique presumably if |
| 480 | the server has multiple devices mounted under one share */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 482 | /* There may be higher info levels that work but are |
| 483 | there Windows server or network appliances for which |
| 484 | IndexNumber field is not guaranteed unique? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 486 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 487 | int rc1 = 0; |
| 488 | __u64 inode_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 490 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 491 | full_path, &inode_num, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 492 | cifs_sb->local_nls, |
| 493 | cifs_sb->mnt_cifs_flags & |
| 494 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 495 | if (rc1) { |
| 496 | cFYI(1, ("GetSrvInodeNum rc %d", rc1)); |
| 497 | /* BB EOPNOSUPP disable SERVER_INUM? */ |
| 498 | } else /* do we need cast or hash to ino? */ |
| 499 | (*pinode)->i_ino = inode_num; |
| 500 | } /* else ino incremented to unique num in new_inode*/ |
| 501 | if (sb->s_flags & MS_NOATIME) |
| 502 | (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; |
| 503 | insert_inode_hash(*pinode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 505 | inode = *pinode; |
| 506 | cifsInfo = CIFS_I(inode); |
| 507 | cifsInfo->cifsAttrs = attr; |
| 508 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
| 509 | cifsInfo->time = jiffies; |
| 510 | cFYI(1, ("New time %ld", cifsInfo->time)); |
| 511 | |
| 512 | /* blksize needs to be multiple of two. So safer to default to |
| 513 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 514 | will match rather than setting to: |
| 515 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 516 | |
| 517 | /* Linux can not store file creation time so ignore it */ |
| 518 | if (pfindData->LastAccessTime) |
| 519 | inode->i_atime = cifs_NTtimeToUnix |
| 520 | (le64_to_cpu(pfindData->LastAccessTime)); |
| 521 | else /* do not need to use current_fs_time - time not stored */ |
| 522 | inode->i_atime = CURRENT_TIME; |
| 523 | inode->i_mtime = |
| 524 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); |
| 525 | inode->i_ctime = |
| 526 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); |
| 527 | cFYI(DBG2, ("Attributes came in as 0x%x", attr)); |
| 528 | if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) { |
| 529 | inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj; |
| 530 | inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj; |
| 531 | } |
| 532 | |
| 533 | /* set default mode. will override for dirs below */ |
| 534 | if (atomic_read(&cifsInfo->inUse) == 0) |
| 535 | /* new inode, can safely set these fields */ |
| 536 | inode->i_mode = cifs_sb->mnt_file_mode; |
| 537 | else /* since we set the inode type below we need to mask off |
| 538 | to avoid strange results if type changes and both |
| 539 | get orred in */ |
| 540 | inode->i_mode &= ~S_IFMT; |
| 541 | /* if (attr & ATTR_REPARSE) */ |
| 542 | /* We no longer handle these as symlinks because we could not |
| 543 | follow them due to the absolute path with drive letter */ |
| 544 | if (attr & ATTR_DIRECTORY) { |
| 545 | /* override default perms since we do not do byte range locking |
| 546 | on dirs */ |
| 547 | inode->i_mode = cifs_sb->mnt_dir_mode; |
| 548 | inode->i_mode |= S_IFDIR; |
| 549 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 550 | (cifsInfo->cifsAttrs & ATTR_SYSTEM) && |
| 551 | /* No need to le64 convert size of zero */ |
| 552 | (pfindData->EndOfFile == 0)) { |
| 553 | inode->i_mode = cifs_sb->mnt_file_mode; |
| 554 | inode->i_mode |= S_IFIFO; |
| 555 | /* BB Finish for SFU style symlinks and devices */ |
| 556 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 557 | (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { |
| 558 | if (decode_sfu_inode(inode, le64_to_cpu(pfindData->EndOfFile), |
| 559 | full_path, cifs_sb, xid)) |
| 560 | cFYI(1, ("Unrecognized sfu inode type")); |
| 561 | |
| 562 | cFYI(1, ("sfu mode 0%o", inode->i_mode)); |
| 563 | } else { |
| 564 | inode->i_mode |= S_IFREG; |
| 565 | /* treat dos attribute of read-only as read-only mode eg 555 */ |
| 566 | if (cifsInfo->cifsAttrs & ATTR_READONLY) |
| 567 | inode->i_mode &= ~(S_IWUGO); |
| 568 | else if ((inode->i_mode & S_IWUGO) == 0) |
| 569 | /* the ATTR_READONLY flag may have been */ |
| 570 | /* changed on server -- set any w bits */ |
| 571 | /* allowed by mnt_file_mode */ |
| 572 | inode->i_mode |= (S_IWUGO & cifs_sb->mnt_file_mode); |
| 573 | /* BB add code to validate if device or weird share or device type? */ |
| 574 | } |
| 575 | |
| 576 | spin_lock(&inode->i_lock); |
| 577 | if (is_size_safe_to_change(cifsInfo, |
| 578 | le64_to_cpu(pfindData->EndOfFile))) { |
| 579 | /* can not safely shrink the file size here if the |
| 580 | client is writing to it due to potential races */ |
| 581 | i_size_write(inode, le64_to_cpu(pfindData->EndOfFile)); |
| 582 | |
| 583 | /* 512 bytes (2**9) is the fake blocksize that must be |
| 584 | used for this calculation */ |
| 585 | inode->i_blocks = (512 - 1 + le64_to_cpu( |
| 586 | pfindData->AllocationSize)) >> 9; |
| 587 | } |
| 588 | spin_unlock(&inode->i_lock); |
| 589 | |
| 590 | inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); |
| 591 | |
| 592 | /* BB fill in uid and gid here? with help from winbind? |
| 593 | or retrieve from NTFS stream extended attribute */ |
| 594 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 595 | /* fill in 0777 bits from ACL */ |
| 596 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
| 597 | cFYI(1, ("Getting mode bits from ACL")); |
| 598 | acl_to_uid_mode(inode, full_path, pfid); |
| 599 | } |
| 600 | #endif |
| 601 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 602 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
| 603 | get_sfu_mode(inode, full_path, cifs_sb, xid); |
| 604 | } else if (atomic_read(&cifsInfo->inUse) == 0) { |
| 605 | inode->i_uid = cifs_sb->mnt_uid; |
| 606 | inode->i_gid = cifs_sb->mnt_gid; |
| 607 | /* set so we do not keep refreshing these fields with |
| 608 | bad data after user has changed them in memory */ |
| 609 | atomic_set(&cifsInfo->inUse, 1); |
| 610 | } |
| 611 | |
| 612 | cifs_set_ops(inode, is_dfs_referral); |
| 613 | |
| 614 | |
| 615 | |
| 616 | |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 617 | cgii_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | kfree(buf); |
| 619 | return rc; |
| 620 | } |
| 621 | |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 622 | static const struct inode_operations cifs_ipc_inode_ops = { |
| 623 | .lookup = cifs_lookup, |
| 624 | }; |
| 625 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | /* gets root inode */ |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 627 | struct inode *cifs_iget(struct super_block *sb, unsigned long ino) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | { |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 629 | int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | struct cifs_sb_info *cifs_sb; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 631 | struct inode *inode; |
| 632 | long rc; |
| 633 | |
| 634 | inode = iget_locked(sb, ino); |
| 635 | if (!inode) |
| 636 | return ERR_PTR(-ENOMEM); |
| 637 | if (!(inode->i_state & I_NEW)) |
| 638 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
| 640 | cifs_sb = CIFS_SB(inode->i_sb); |
| 641 | xid = GetXid(); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 642 | |
| 643 | if (cifs_sb->tcon->unix_ext) |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 644 | rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | else |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 646 | rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid, |
| 647 | NULL); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 648 | if (rc && cifs_sb->tcon->ipc) { |
| 649 | cFYI(1, ("ipc connection - fake read inode")); |
| 650 | inode->i_mode |= S_IFDIR; |
| 651 | inode->i_nlink = 2; |
| 652 | inode->i_op = &cifs_ipc_inode_ops; |
| 653 | inode->i_fop = &simple_dir_operations; |
| 654 | inode->i_uid = cifs_sb->mnt_uid; |
| 655 | inode->i_gid = cifs_sb->mnt_gid; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 656 | _FreeXid(xid); |
| 657 | iget_failed(inode); |
| 658 | return ERR_PTR(rc); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 659 | } |
| 660 | |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 661 | unlock_new_inode(inode); |
| 662 | |
| 663 | /* can not call macro FreeXid here since in a void func |
| 664 | * TODO: This is no longer true |
| 665 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | _FreeXid(xid); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 667 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | int cifs_unlink(struct inode *inode, struct dentry *direntry) |
| 671 | { |
| 672 | int rc = 0; |
| 673 | int xid; |
| 674 | struct cifs_sb_info *cifs_sb; |
| 675 | struct cifsTconInfo *pTcon; |
| 676 | char *full_path = NULL; |
| 677 | struct cifsInodeInfo *cifsInode; |
| 678 | FILE_BASIC_INFO *pinfo_buf; |
| 679 | |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 680 | cFYI(1, ("cifs_unlink, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | xid = GetXid(); |
| 683 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 684 | if (inode) |
Steve French | 6910ab3 | 2006-03-31 03:37:08 +0000 | [diff] [blame] | 685 | cifs_sb = CIFS_SB(inode->i_sb); |
| 686 | else |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 687 | cifs_sb = CIFS_SB(direntry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | pTcon = cifs_sb->tcon; |
| 689 | |
| 690 | /* Unlink can be called from rename so we can not grab the sem here |
| 691 | since we deadlock otherwise */ |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 692 | /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 693 | full_path = build_path_from_dentry(direntry); |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 694 | /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | if (full_path == NULL) { |
| 696 | FreeXid(xid); |
| 697 | return -ENOMEM; |
| 698 | } |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 699 | |
| 700 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
| 701 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
| 702 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
| 703 | rc = CIFSPOSIXDelFile(xid, pTcon, full_path, |
| 704 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
| 705 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 706 | cFYI(1, ("posix del rc %d", rc)); |
| 707 | if ((rc == 0) || (rc == -ENOENT)) |
| 708 | goto psx_del_no_retry; |
| 709 | } |
| 710 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 711 | rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, |
| 712 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 713 | psx_del_no_retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 715 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 716 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | } else if (rc == -ENOENT) { |
| 718 | d_drop(direntry); |
| 719 | } else if (rc == -ETXTBSY) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 720 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | __u16 netfid; |
| 722 | |
| 723 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, |
| 724 | CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 725 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 726 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 727 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 728 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 730 | cifs_sb->local_nls, |
| 731 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 732 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 734 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 735 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
| 737 | } else if (rc == -EACCES) { |
| 738 | /* try only if r/o attribute set in local lookup data? */ |
Eric Sesterhenn | a048d7a | 2006-02-21 22:33:09 +0000 | [diff] [blame] | 739 | pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | if (pinfo_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | /* ATTRS set to normal clears r/o bit */ |
| 742 | pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); |
| 743 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 744 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, |
| 745 | pinfo_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 746 | cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 747 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 748 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | else |
| 750 | rc = -EOPNOTSUPP; |
| 751 | |
| 752 | if (rc == -EOPNOTSUPP) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 753 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | __u16 netfid; |
| 755 | /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, |
| 756 | full_path, |
| 757 | (__u16)ATTR_NORMAL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 758 | cifs_sb->local_nls); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | For some strange reason it seems that NT4 eats the |
| 760 | old setattr call without actually setting the |
| 761 | attributes so on to the third attempted workaround |
| 762 | */ |
| 763 | |
| 764 | /* BB could scan to see if we already have it open |
| 765 | and pass in pid of opener to function */ |
| 766 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 767 | FILE_OPEN, SYNCHRONIZE | |
| 768 | FILE_WRITE_ATTRIBUTES, 0, |
| 769 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 770 | cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 771 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 772 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 773 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | rc = CIFSSMBSetFileTimes(xid, pTcon, |
| 775 | pinfo_buf, |
| 776 | netfid); |
| 777 | CIFSSMBClose(xid, pTcon, netfid); |
| 778 | } |
| 779 | } |
| 780 | kfree(pinfo_buf); |
| 781 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 782 | if (rc == 0) { |
| 783 | rc = CIFSSMBDelFile(xid, pTcon, full_path, |
| 784 | cifs_sb->local_nls, |
| 785 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 786 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 788 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 789 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } else if (rc == -ETXTBSY) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 791 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | __u16 netfid; |
| 793 | |
| 794 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 795 | FILE_OPEN, DELETE, |
| 796 | CREATE_NOT_DIR | |
| 797 | CREATE_DELETE_ON_CLOSE, |
| 798 | &netfid, &oplock, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 799 | cifs_sb->local_nls, |
| 800 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 801 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 802 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | CIFSSMBRenameOpenFile(xid, pTcon, |
| 804 | netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 805 | cifs_sb->local_nls, |
| 806 | cifs_sb->mnt_cifs_flags & |
| 807 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 809 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 810 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | } |
| 812 | /* BB if rc = -ETXTBUSY goto the rename logic BB */ |
| 813 | } |
| 814 | } |
| 815 | } |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 816 | if (direntry->d_inode) { |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 817 | cifsInode = CIFS_I(direntry->d_inode); |
| 818 | cifsInode->time = 0; /* will force revalidate to get info |
| 819 | when needed */ |
| 820 | direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); |
| 821 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 822 | if (inode) { |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 823 | inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); |
| 824 | cifsInode = CIFS_I(inode); |
| 825 | cifsInode->time = 0; /* force revalidate of dir as well */ |
| 826 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | kfree(full_path); |
| 829 | FreeXid(xid); |
| 830 | return rc; |
| 831 | } |
| 832 | |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 833 | static void posix_fill_in_inode(struct inode *tmp_inode, |
Steve French | 0b442d2 | 2008-02-26 03:44:02 +0000 | [diff] [blame] | 834 | FILE_UNIX_BASIC_INFO *pData, int isNewInode) |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 835 | { |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 836 | struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 837 | loff_t local_size; |
| 838 | struct timespec local_mtime; |
| 839 | |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 840 | cifsInfo->time = jiffies; |
| 841 | atomic_inc(&cifsInfo->inUse); |
| 842 | |
| 843 | /* save mtime and size */ |
| 844 | local_mtime = tmp_inode->i_mtime; |
| 845 | local_size = tmp_inode->i_size; |
| 846 | |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 847 | cifs_unix_info_to_inode(tmp_inode, pData, 1); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 848 | cifs_set_ops(tmp_inode, false); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 849 | |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 850 | if (!S_ISREG(tmp_inode->i_mode)) |
| 851 | return; |
| 852 | |
| 853 | /* |
| 854 | * No sense invalidating pages for new inode |
| 855 | * since we we have not started caching |
| 856 | * readahead file data yet. |
| 857 | */ |
| 858 | if (isNewInode) |
| 859 | return; |
| 860 | |
| 861 | if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) && |
| 862 | (local_size == tmp_inode->i_size)) { |
| 863 | cFYI(1, ("inode exists but unchanged")); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 864 | } else { |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 865 | /* file may have changed on server */ |
| 866 | cFYI(1, ("invalidate inode, readdir detected change")); |
| 867 | invalidate_remote_inode(tmp_inode); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 868 | } |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 869 | } |
| 870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
| 872 | { |
| 873 | int rc = 0; |
| 874 | int xid; |
| 875 | struct cifs_sb_info *cifs_sb; |
| 876 | struct cifsTconInfo *pTcon; |
| 877 | char *full_path = NULL; |
| 878 | struct inode *newinode = NULL; |
| 879 | |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 880 | cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | xid = GetXid(); |
| 883 | |
| 884 | cifs_sb = CIFS_SB(inode->i_sb); |
| 885 | pTcon = cifs_sb->tcon; |
| 886 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 887 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | if (full_path == NULL) { |
| 889 | FreeXid(xid); |
| 890 | return -ENOMEM; |
| 891 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 892 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 893 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
| 894 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 895 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
| 896 | u32 oplock = 0; |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 897 | FILE_UNIX_BASIC_INFO *pInfo = |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 898 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 899 | if (pInfo == NULL) { |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 900 | rc = -ENOMEM; |
| 901 | goto mkdir_out; |
| 902 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 903 | |
Jeff | a8cd925 | 2007-09-13 18:38:50 +0000 | [diff] [blame] | 904 | mode &= ~current->fs->umask; |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 905 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
| 906 | mode, NULL /* netfid */, pInfo, &oplock, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 907 | full_path, cifs_sb->local_nls, |
| 908 | cifs_sb->mnt_cifs_flags & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 909 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 910 | if (rc == -EOPNOTSUPP) { |
| 911 | kfree(pInfo); |
| 912 | goto mkdir_retry_old; |
| 913 | } else if (rc) { |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 914 | cFYI(1, ("posix mkdir returned 0x%x", rc)); |
| 915 | d_drop(direntry); |
| 916 | } else { |
Cyril Gorcunov | 8f2376a | 2007-10-14 17:58:43 +0000 | [diff] [blame] | 917 | if (pInfo->Type == cpu_to_le32(-1)) { |
| 918 | /* no return info, go query for it */ |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 919 | kfree(pInfo); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 920 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 921 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 922 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need |
| 923 | to set uid/gid */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 924 | inc_nlink(inode); |
| 925 | if (pTcon->nocase) |
| 926 | direntry->d_op = &cifs_ci_dentry_ops; |
| 927 | else |
| 928 | direntry->d_op = &cifs_dentry_ops; |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 929 | |
| 930 | newinode = new_inode(inode->i_sb); |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 931 | if (newinode == NULL) { |
| 932 | kfree(pInfo); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 933 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 934 | } |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 935 | /* Is an i_ino of zero legal? */ |
| 936 | /* Are there sanity checks we can use to ensure that |
| 937 | the server is really filling in that field? */ |
| 938 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 939 | newinode->i_ino = |
| 940 | (unsigned long)pInfo->UniqueId; |
| 941 | } /* note ino incremented to unique num in new_inode */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 942 | if (inode->i_sb->s_flags & MS_NOATIME) |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 943 | newinode->i_flags |= S_NOATIME | S_NOCMTIME; |
| 944 | newinode->i_nlink = 2; |
| 945 | |
| 946 | insert_inode_hash(newinode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 947 | d_instantiate(direntry, newinode); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 948 | |
| 949 | /* we already checked in POSIXCreate whether |
| 950 | frame was long enough */ |
| 951 | posix_fill_in_inode(direntry->d_inode, |
Steve French | 0b442d2 | 2008-02-26 03:44:02 +0000 | [diff] [blame] | 952 | pInfo, 1 /* NewInode */); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 953 | #ifdef CONFIG_CIFS_DEBUG2 |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 954 | cFYI(1, ("instantiated dentry %p %s to inode %p", |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 955 | direntry, direntry->d_name.name, newinode)); |
| 956 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 957 | if (newinode->i_nlink != 2) |
| 958 | cFYI(1, ("unexpected number of links %d", |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 959 | newinode->i_nlink)); |
| 960 | #endif |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 961 | } |
| 962 | kfree(pInfo); |
| 963 | goto mkdir_out; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 964 | } |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 965 | mkdir_retry_old: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 967 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 968 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | if (rc) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 970 | cFYI(1, ("cifs_mkdir returned 0x%x", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | d_drop(direntry); |
| 972 | } else { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 973 | mkdir_get_info: |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 974 | inc_nlink(inode); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 975 | if (pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 977 | inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | else |
| 979 | rc = cifs_get_inode_info(&newinode, full_path, NULL, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 980 | inode->i_sb, xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 982 | if (pTcon->nocase) |
| 983 | direntry->d_op = &cifs_ci_dentry_ops; |
| 984 | else |
| 985 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | d_instantiate(direntry, newinode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 987 | /* setting nlink not necessary except in cases where we |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 988 | * failed to get it from the server or was set bogus */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 989 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 990 | direntry->d_inode->i_nlink = 2; |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 991 | mode &= ~current->fs->umask; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 992 | if (pTcon->unix_ext) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 993 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 995 | mode, |
Steve French | 8345187 | 2005-12-01 17:12:59 -0800 | [diff] [blame] | 996 | (__u64)current->fsuid, |
| 997 | (__u64)current->fsgid, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 999 | cifs_sb->local_nls, |
| 1000 | cifs_sb->mnt_cifs_flags & |
| 1001 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | } else { |
| 1003 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 1004 | mode, (__u64)-1, |
| 1005 | (__u64)-1, 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1006 | cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1007 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1008 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 1010 | } else { |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1011 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
| 1012 | (mode & S_IWUGO) == 0) { |
| 1013 | FILE_BASIC_INFO pInfo; |
| 1014 | memset(&pInfo, 0, sizeof(pInfo)); |
| 1015 | pInfo.Attributes = cpu_to_le32(ATTR_READONLY); |
| 1016 | CIFSSMBSetTimes(xid, pTcon, full_path, |
| 1017 | &pInfo, cifs_sb->local_nls, |
| 1018 | cifs_sb->mnt_cifs_flags & |
| 1019 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1020 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1021 | if (direntry->d_inode) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1022 | direntry->d_inode->i_mode = mode; |
Steve French | 25741b3 | 2005-11-29 22:38:43 -0800 | [diff] [blame] | 1023 | direntry->d_inode->i_mode |= S_IFDIR; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1024 | if (cifs_sb->mnt_cifs_flags & |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1025 | CIFS_MOUNT_SET_UID) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1026 | direntry->d_inode->i_uid = |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1027 | current->fsuid; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1028 | direntry->d_inode->i_gid = |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1029 | current->fsgid; |
| 1030 | } |
| 1031 | } |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1032 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1034 | mkdir_out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | kfree(full_path); |
| 1036 | FreeXid(xid); |
| 1037 | return rc; |
| 1038 | } |
| 1039 | |
| 1040 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 1041 | { |
| 1042 | int rc = 0; |
| 1043 | int xid; |
| 1044 | struct cifs_sb_info *cifs_sb; |
| 1045 | struct cifsTconInfo *pTcon; |
| 1046 | char *full_path = NULL; |
| 1047 | struct cifsInodeInfo *cifsInode; |
| 1048 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1049 | cFYI(1, ("cifs_rmdir, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | |
| 1051 | xid = GetXid(); |
| 1052 | |
| 1053 | cifs_sb = CIFS_SB(inode->i_sb); |
| 1054 | pTcon = cifs_sb->tcon; |
| 1055 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1056 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | if (full_path == NULL) { |
| 1058 | FreeXid(xid); |
| 1059 | return -ENOMEM; |
| 1060 | } |
| 1061 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1062 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 1063 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | |
| 1065 | if (!rc) { |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 1066 | drop_nlink(inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1067 | spin_lock(&direntry->d_inode->i_lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1068 | i_size_write(direntry->d_inode, 0); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 1069 | clear_nlink(direntry->d_inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1070 | spin_unlock(&direntry->d_inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | cifsInode = CIFS_I(direntry->d_inode); |
| 1074 | cifsInode->time = 0; /* force revalidate to go get info when |
| 1075 | needed */ |
| 1076 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
| 1077 | current_fs_time(inode->i_sb); |
| 1078 | |
| 1079 | kfree(full_path); |
| 1080 | FreeXid(xid); |
| 1081 | return rc; |
| 1082 | } |
| 1083 | |
| 1084 | int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, |
| 1085 | struct inode *target_inode, struct dentry *target_direntry) |
| 1086 | { |
| 1087 | char *fromName; |
| 1088 | char *toName; |
| 1089 | struct cifs_sb_info *cifs_sb_source; |
| 1090 | struct cifs_sb_info *cifs_sb_target; |
| 1091 | struct cifsTconInfo *pTcon; |
| 1092 | int xid; |
| 1093 | int rc = 0; |
| 1094 | |
| 1095 | xid = GetXid(); |
| 1096 | |
| 1097 | cifs_sb_target = CIFS_SB(target_inode->i_sb); |
| 1098 | cifs_sb_source = CIFS_SB(source_inode->i_sb); |
| 1099 | pTcon = cifs_sb_source->tcon; |
| 1100 | |
| 1101 | if (pTcon != cifs_sb_target->tcon) { |
| 1102 | FreeXid(xid); |
| 1103 | return -EXDEV; /* BB actually could be allowed if same server, |
| 1104 | but different share. |
| 1105 | Might eventually add support for this */ |
| 1106 | } |
| 1107 | |
| 1108 | /* we already have the rename sem so we do not need to grab it again |
| 1109 | here to protect the path integrity */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1110 | fromName = build_path_from_dentry(source_direntry); |
| 1111 | toName = build_path_from_dentry(target_direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | if ((fromName == NULL) || (toName == NULL)) { |
| 1113 | rc = -ENOMEM; |
| 1114 | goto cifs_rename_exit; |
| 1115 | } |
| 1116 | |
| 1117 | rc = CIFSSMBRename(xid, pTcon, fromName, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1118 | cifs_sb_source->local_nls, |
| 1119 | cifs_sb_source->mnt_cifs_flags & |
| 1120 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | if (rc == -EEXIST) { |
| 1122 | /* check if they are the same file because rename of hardlinked |
| 1123 | files is a noop */ |
| 1124 | FILE_UNIX_BASIC_INFO *info_buf_source; |
| 1125 | FILE_UNIX_BASIC_INFO *info_buf_target; |
| 1126 | |
| 1127 | info_buf_source = |
| 1128 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
| 1129 | if (info_buf_source != NULL) { |
| 1130 | info_buf_target = info_buf_source + 1; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1131 | if (pTcon->unix_ext) |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1132 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1133 | info_buf_source, |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1134 | cifs_sb_source->local_nls, |
| 1135 | cifs_sb_source->mnt_cifs_flags & |
| 1136 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1137 | /* else rc is still EEXIST so will fall through to |
| 1138 | unlink the target and retry rename */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | if (rc == 0) { |
| 1140 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, |
| 1141 | info_buf_target, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1142 | cifs_sb_target->local_nls, |
| 1143 | /* remap based on source sb */ |
| 1144 | cifs_sb_source->mnt_cifs_flags & |
| 1145 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | } |
| 1147 | if ((rc == 0) && |
| 1148 | (info_buf_source->UniqueId == |
| 1149 | info_buf_target->UniqueId)) { |
| 1150 | /* do not rename since the files are hardlinked which |
| 1151 | is a noop */ |
| 1152 | } else { |
| 1153 | /* we either can not tell the files are hardlinked |
| 1154 | (as with Windows servers) or files are not |
| 1155 | hardlinked so delete the target manually before |
| 1156 | renaming to follow POSIX rather than Windows |
| 1157 | semantics */ |
| 1158 | cifs_unlink(target_inode, target_direntry); |
| 1159 | rc = CIFSSMBRename(xid, pTcon, fromName, |
| 1160 | toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1161 | cifs_sb_source->local_nls, |
| 1162 | cifs_sb_source->mnt_cifs_flags |
| 1163 | & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | kfree(info_buf_source); |
| 1166 | } /* if we can not get memory just leave rc as EEXIST */ |
| 1167 | } |
| 1168 | |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 1169 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | cFYI(1, ("rename rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | |
| 1172 | if ((rc == -EIO) || (rc == -EEXIST)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1173 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | __u16 netfid; |
| 1175 | |
| 1176 | /* BB FIXME Is Generic Read correct for rename? */ |
| 1177 | /* if renaming directory - we should not say CREATE_NOT_DIR, |
| 1178 | need to test renaming open directory, also GENERIC_READ |
| 1179 | might not right be right access to request */ |
| 1180 | rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, |
| 1181 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1182 | cifs_sb_source->local_nls, |
| 1183 | cifs_sb_source->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1184 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1185 | if (rc == 0) { |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1186 | rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1187 | cifs_sb_source->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1188 | cifs_sb_source->mnt_cifs_flags & |
| 1189 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | CIFSSMBClose(xid, pTcon, netfid); |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | cifs_rename_exit: |
| 1195 | kfree(fromName); |
| 1196 | kfree(toName); |
| 1197 | FreeXid(xid); |
| 1198 | return rc; |
| 1199 | } |
| 1200 | |
| 1201 | int cifs_revalidate(struct dentry *direntry) |
| 1202 | { |
| 1203 | int xid; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1204 | int rc = 0, wbrc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | char *full_path; |
| 1206 | struct cifs_sb_info *cifs_sb; |
| 1207 | struct cifsInodeInfo *cifsInode; |
| 1208 | loff_t local_size; |
| 1209 | struct timespec local_mtime; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1210 | bool invalidate_inode = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | |
| 1212 | if (direntry->d_inode == NULL) |
| 1213 | return -ENOENT; |
| 1214 | |
| 1215 | cifsInode = CIFS_I(direntry->d_inode); |
| 1216 | |
| 1217 | if (cifsInode == NULL) |
| 1218 | return -ENOENT; |
| 1219 | |
| 1220 | /* no sense revalidating inode info on file that no one can write */ |
| 1221 | if (CIFS_I(direntry->d_inode)->clientCanCacheRead) |
| 1222 | return rc; |
| 1223 | |
| 1224 | xid = GetXid(); |
| 1225 | |
| 1226 | cifs_sb = CIFS_SB(direntry->d_sb); |
| 1227 | |
| 1228 | /* can not safely grab the rename sem here if rename calls revalidate |
| 1229 | since that would deadlock */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1230 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | if (full_path == NULL) { |
| 1232 | FreeXid(xid); |
| 1233 | return -ENOMEM; |
| 1234 | } |
| 1235 | cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " |
| 1236 | "jiffies %ld", full_path, direntry->d_inode, |
| 1237 | direntry->d_inode->i_count.counter, direntry, |
| 1238 | direntry->d_time, jiffies)); |
| 1239 | |
| 1240 | if (cifsInode->time == 0) { |
| 1241 | /* was set to zero previously to force revalidate */ |
| 1242 | } else if (time_before(jiffies, cifsInode->time + HZ) && |
| 1243 | lookupCacheEnabled) { |
| 1244 | if ((S_ISREG(direntry->d_inode->i_mode) == 0) || |
| 1245 | (direntry->d_inode->i_nlink == 1)) { |
| 1246 | kfree(full_path); |
| 1247 | FreeXid(xid); |
| 1248 | return rc; |
| 1249 | } else { |
| 1250 | cFYI(1, ("Have to revalidate file due to hardlinks")); |
| 1251 | } |
| 1252 | } |
| 1253 | |
| 1254 | /* save mtime and size */ |
| 1255 | local_mtime = direntry->d_inode->i_mtime; |
| 1256 | local_size = direntry->d_inode->i_size; |
| 1257 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1258 | if (cifs_sb->tcon->unix_ext) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1260 | direntry->d_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | if (rc) { |
| 1262 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1263 | /* if (rc != -ENOENT) |
| 1264 | rc = 0; */ /* BB should we cache info on |
| 1265 | certain errors? */ |
| 1266 | } |
| 1267 | } else { |
| 1268 | rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 1269 | direntry->d_sb, xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | if (rc) { |
| 1271 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1272 | /* if (rc != -ENOENT) |
| 1273 | rc = 0; */ /* BB should we cache info on |
| 1274 | certain errors? */ |
| 1275 | } |
| 1276 | } |
| 1277 | /* should we remap certain errors, access denied?, to zero */ |
| 1278 | |
| 1279 | /* if not oplocked, we invalidate inode pages if mtime or file size |
| 1280 | had changed on server */ |
| 1281 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1282 | if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | (local_size == direntry->d_inode->i_size)) { |
| 1284 | cFYI(1, ("cifs_revalidate - inode unchanged")); |
| 1285 | } else { |
| 1286 | /* file may have changed on server */ |
| 1287 | if (cifsInode->clientCanCacheRead) { |
| 1288 | /* no need to invalidate inode pages since we were the |
| 1289 | only ones who could have modified the file and the |
| 1290 | server copy is staler than ours */ |
| 1291 | } else { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1292 | invalidate_inode = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | } |
| 1294 | } |
| 1295 | |
| 1296 | /* can not grab this sem since kernel filesys locking documentation |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1297 | indicates i_mutex may be taken by the kernel on lookup and rename |
| 1298 | which could deadlock if we grab the i_mutex here as well */ |
| 1299 | /* mutex_lock(&direntry->d_inode->i_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | /* need to write out dirty pages here */ |
| 1301 | if (direntry->d_inode->i_mapping) { |
| 1302 | /* do we need to lock inode until after invalidate completes |
| 1303 | below? */ |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1304 | wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping); |
| 1305 | if (wbrc) |
| 1306 | CIFS_I(direntry->d_inode)->write_behind_rc = wbrc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | } |
| 1308 | if (invalidate_inode) { |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1309 | /* shrink_dcache not necessary now that cifs dentry ops |
| 1310 | are exported for negative dentries */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1311 | /* if (S_ISDIR(direntry->d_inode->i_mode)) |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1312 | shrink_dcache_parent(direntry); */ |
| 1313 | if (S_ISREG(direntry->d_inode->i_mode)) { |
| 1314 | if (direntry->d_inode->i_mapping) |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1315 | wbrc = filemap_fdatawait(direntry->d_inode->i_mapping); |
| 1316 | if (wbrc) |
| 1317 | CIFS_I(direntry->d_inode)->write_behind_rc = wbrc; |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1318 | /* may eventually have to do this for open files too */ |
| 1319 | if (list_empty(&(cifsInode->openFileList))) { |
| 1320 | /* changed on server - flush read ahead pages */ |
| 1321 | cFYI(1, ("Invalidating read ahead data on " |
| 1322 | "closed file")); |
| 1323 | invalidate_remote_inode(direntry->d_inode); |
| 1324 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | } |
| 1326 | } |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1327 | /* mutex_unlock(&direntry->d_inode->i_mutex); */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1328 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | kfree(full_path); |
| 1330 | FreeXid(xid); |
| 1331 | return rc; |
| 1332 | } |
| 1333 | |
| 1334 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 1335 | struct kstat *stat) |
| 1336 | { |
| 1337 | int err = cifs_revalidate(dentry); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1338 | if (!err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | generic_fillattr(dentry->d_inode, stat); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1340 | stat->blksize = CIFS_MAX_MSGSIZE; |
| 1341 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | return err; |
| 1343 | } |
| 1344 | |
| 1345 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1346 | { |
| 1347 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1348 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1349 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | int rc = 0; |
| 1351 | |
| 1352 | page = grab_cache_page(mapping, index); |
| 1353 | if (!page) |
| 1354 | return -ENOMEM; |
| 1355 | |
Christoph Lameter | eebd2aa | 2008-02-04 22:28:29 -0800 | [diff] [blame] | 1356 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | unlock_page(page); |
| 1358 | page_cache_release(page); |
| 1359 | return rc; |
| 1360 | } |
| 1361 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1362 | static int cifs_vmtruncate(struct inode *inode, loff_t offset) |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1363 | { |
| 1364 | struct address_space *mapping = inode->i_mapping; |
| 1365 | unsigned long limit; |
| 1366 | |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1367 | spin_lock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1368 | if (inode->i_size < offset) |
| 1369 | goto do_expand; |
| 1370 | /* |
| 1371 | * truncation of in-use swapfiles is disallowed - it would cause |
| 1372 | * subsequent swapout to scribble on the now-freed blocks. |
| 1373 | */ |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1374 | if (IS_SWAPFILE(inode)) { |
| 1375 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1376 | goto out_busy; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1377 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1378 | i_size_write(inode, offset); |
| 1379 | spin_unlock(&inode->i_lock); |
Steve French | 8064ab4 | 2007-08-22 22:12:07 +0000 | [diff] [blame] | 1380 | /* |
| 1381 | * unmap_mapping_range is called twice, first simply for efficiency |
| 1382 | * so that truncate_inode_pages does fewer single-page unmaps. However |
| 1383 | * after this first call, and before truncate_inode_pages finishes, |
| 1384 | * it is possible for private pages to be COWed, which remain after |
| 1385 | * truncate_inode_pages finishes, hence the second unmap_mapping_range |
| 1386 | * call must be made for correctness. |
| 1387 | */ |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1388 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); |
| 1389 | truncate_inode_pages(mapping, offset); |
Steve French | 8064ab4 | 2007-08-22 22:12:07 +0000 | [diff] [blame] | 1390 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1391 | goto out_truncate; |
| 1392 | |
| 1393 | do_expand: |
| 1394 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1395 | if (limit != RLIM_INFINITY && offset > limit) { |
| 1396 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1397 | goto out_sig; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1398 | } |
| 1399 | if (offset > inode->i_sb->s_maxbytes) { |
| 1400 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1401 | goto out_big; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1402 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1403 | i_size_write(inode, offset); |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1404 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1405 | out_truncate: |
| 1406 | if (inode->i_op && inode->i_op->truncate) |
| 1407 | inode->i_op->truncate(inode); |
| 1408 | return 0; |
| 1409 | out_sig: |
| 1410 | send_sig(SIGXFSZ, current, 0); |
| 1411 | out_big: |
| 1412 | return -EFBIG; |
| 1413 | out_busy: |
| 1414 | return -ETXTBSY; |
| 1415 | } |
| 1416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | int cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 1418 | { |
| 1419 | int xid; |
| 1420 | struct cifs_sb_info *cifs_sb; |
| 1421 | struct cifsTconInfo *pTcon; |
| 1422 | char *full_path = NULL; |
| 1423 | int rc = -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | struct cifsFileInfo *open_file = NULL; |
| 1425 | FILE_BASIC_INFO time_buf; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1426 | bool set_time = false; |
| 1427 | bool set_dosattr = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | __u64 mode = 0xFFFFFFFFFFFFFFFFULL; |
| 1429 | __u64 uid = 0xFFFFFFFFFFFFFFFFULL; |
| 1430 | __u64 gid = 0xFFFFFFFFFFFFFFFFULL; |
| 1431 | struct cifsInodeInfo *cifsInode; |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1432 | struct inode *inode = direntry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | |
| 1434 | xid = GetXid(); |
| 1435 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1436 | cFYI(1, ("setattr on file %s attrs->iavalid 0x%x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | direntry->d_name.name, attrs->ia_valid)); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1438 | |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1439 | cifs_sb = CIFS_SB(inode->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | pTcon = cifs_sb->tcon; |
| 1441 | |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1442 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1443 | /* check if we have permission to change attrs */ |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1444 | rc = inode_change_ok(inode, attrs); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1445 | if (rc < 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1446 | FreeXid(xid); |
| 1447 | return rc; |
| 1448 | } else |
| 1449 | rc = 0; |
| 1450 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1451 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1452 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | if (full_path == NULL) { |
| 1454 | FreeXid(xid); |
| 1455 | return -ENOMEM; |
| 1456 | } |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1457 | cifsInode = CIFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1459 | if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) { |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1460 | /* |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1461 | Flush data before changing file size or changing the last |
| 1462 | write time of the file on the server. If the |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1463 | flush returns error, store it to report later and continue. |
| 1464 | BB: This should be smarter. Why bother flushing pages that |
| 1465 | will be truncated anyway? Also, should we error out here if |
| 1466 | the flush returns error? |
| 1467 | */ |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1468 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1469 | if (rc != 0) { |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1470 | cifsInode->write_behind_rc = rc; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1471 | rc = 0; |
| 1472 | } |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1473 | } |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1474 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1475 | if (attrs->ia_valid & ATTR_SIZE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | /* To avoid spurious oplock breaks from server, in the case of |
| 1477 | inodes that we already have open, avoid doing path based |
| 1478 | setting of file size if we can do it by handle. |
| 1479 | This keeps our caching token (oplock) and avoids timeouts |
| 1480 | when the local oplock break takes longer to flush |
| 1481 | writebehind data than the SMB timeout for the SetPathInfo |
| 1482 | request would allow */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1483 | |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1484 | open_file = find_writable_file(cifsInode); |
| 1485 | if (open_file) { |
| 1486 | __u16 nfid = open_file->netfid; |
| 1487 | __u32 npid = open_file->pid; |
| 1488 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1489 | nfid, npid, false); |
Steve French | 23e7dd7 | 2005-10-20 13:44:56 -0700 | [diff] [blame] | 1490 | atomic_dec(&open_file->wrtPending); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1491 | cFYI(1, ("SetFSize for attrs rc = %d", rc)); |
| 1492 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | 77159b4 | 2007-08-31 01:10:17 +0000 | [diff] [blame] | 1493 | unsigned int bytes_written; |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1494 | rc = CIFSSMBWrite(xid, pTcon, |
| 1495 | nfid, 0, attrs->ia_size, |
| 1496 | &bytes_written, NULL, NULL, |
| 1497 | 1 /* 45 seconds */); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1498 | cFYI(1, ("Wrt seteof rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1500 | } else |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1501 | rc = -EINVAL; |
| 1502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | if (rc != 0) { |
| 1504 | /* Set file size by pathname rather than by handle |
| 1505 | either because no valid, writeable file handle for |
| 1506 | it was found or because there was an error setting |
| 1507 | it by handle */ |
| 1508 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1509 | attrs->ia_size, false, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1510 | cifs_sb->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1511 | cifs_sb->mnt_cifs_flags & |
| 1512 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1513 | cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1514 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1515 | __u16 netfid; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1516 | int oplock = 0; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1517 | |
| 1518 | rc = SMBLegacyOpen(xid, pTcon, full_path, |
Jeff Layton | 35fc37d | 2008-05-14 10:22:03 -0700 | [diff] [blame] | 1519 | FILE_OPEN, GENERIC_WRITE, |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1520 | CREATE_NOT_DIR, &netfid, &oplock, |
| 1521 | NULL, cifs_sb->local_nls, |
| 1522 | cifs_sb->mnt_cifs_flags & |
| 1523 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1524 | if (rc == 0) { |
Steve French | 77159b4 | 2007-08-31 01:10:17 +0000 | [diff] [blame] | 1525 | unsigned int bytes_written; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1526 | rc = CIFSSMBWrite(xid, pTcon, |
| 1527 | netfid, 0, |
| 1528 | attrs->ia_size, |
| 1529 | &bytes_written, NULL, |
| 1530 | NULL, 1 /* 45 sec */); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1531 | cFYI(1, ("wrt seteof rc %d", rc)); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1532 | CIFSSMBClose(xid, pTcon, netfid); |
| 1533 | } |
| 1534 | |
| 1535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | } |
| 1537 | |
| 1538 | /* Server is ok setting allocation size implicitly - no need |
| 1539 | to call: |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1540 | CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, true, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | cifs_sb->local_nls); |
| 1542 | */ |
| 1543 | |
| 1544 | if (rc == 0) { |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1545 | rc = cifs_vmtruncate(inode, attrs->ia_size); |
| 1546 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1547 | } else |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1548 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | } |
| 1550 | if (attrs->ia_valid & ATTR_UID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1551 | cFYI(1, ("UID changed to %d", attrs->ia_uid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | uid = attrs->ia_uid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | } |
| 1554 | if (attrs->ia_valid & ATTR_GID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1555 | cFYI(1, ("GID changed to %d", attrs->ia_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | gid = attrs->ia_gid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | time_buf.Attributes = 0; |
Jeff Layton | d32c4f2 | 2007-10-18 03:05:22 -0700 | [diff] [blame] | 1560 | |
| 1561 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 1562 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 1563 | attrs->ia_valid &= ~ATTR_MODE; |
| 1564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | if (attrs->ia_valid & ATTR_MODE) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1566 | cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | mode = attrs->ia_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | } |
| 1569 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1570 | if ((pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) |
| 1572 | rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1573 | 0 /* dev_t */, cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1574 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1575 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | else if (attrs->ia_valid & ATTR_MODE) { |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 1577 | rc = 0; |
Steve French | 9783758 | 2007-12-31 07:47:21 +0000 | [diff] [blame] | 1578 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 1579 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1580 | rc = mode_to_acl(inode, full_path, mode); |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 1581 | else if ((mode & S_IWUGO) == 0) { |
Steve French | 9783758 | 2007-12-31 07:47:21 +0000 | [diff] [blame] | 1582 | #else |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 1583 | if ((mode & S_IWUGO) == 0) { |
Steve French | 9783758 | 2007-12-31 07:47:21 +0000 | [diff] [blame] | 1584 | #endif |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 1585 | /* not writeable */ |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1586 | if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1587 | set_dosattr = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | time_buf.Attributes = |
| 1589 | cpu_to_le32(cifsInode->cifsAttrs | |
| 1590 | ATTR_READONLY); |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1591 | } |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1592 | } else if (cifsInode->cifsAttrs & ATTR_READONLY) { |
| 1593 | /* If file is readonly on server, we would |
| 1594 | not be able to write to it - so if any write |
| 1595 | bit is enabled for user or group or other we |
| 1596 | need to at least try to remove r/o dos attr */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1597 | set_dosattr = true; |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1598 | time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs & |
| 1599 | (~ATTR_READONLY)); |
| 1600 | /* Windows ignores set to zero */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1601 | if (time_buf.Attributes == 0) |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1602 | time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | } |
| 1605 | |
| 1606 | if (attrs->ia_valid & ATTR_ATIME) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1607 | set_time = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | time_buf.LastAccessTime = |
| 1609 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 1610 | } else |
| 1611 | time_buf.LastAccessTime = 0; |
| 1612 | |
| 1613 | if (attrs->ia_valid & ATTR_MTIME) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1614 | set_time = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | time_buf.LastWriteTime = |
| 1616 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 1617 | } else |
| 1618 | time_buf.LastWriteTime = 0; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1619 | /* Do not set ctime explicitly unless other time |
| 1620 | stamps are changed explicitly (i.e. by utime() |
| 1621 | since we would then have a mix of client and |
| 1622 | server times */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1623 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1624 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1625 | set_time = true; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1626 | /* Although Samba throws this field away |
| 1627 | it may be useful to Windows - but we do |
| 1628 | not want to set ctime unless some other |
| 1629 | timestamp is changing */ |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1630 | cFYI(1, ("CIFS - CTIME changed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | time_buf.ChangeTime = |
| 1632 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 1633 | } else |
| 1634 | time_buf.ChangeTime = 0; |
| 1635 | |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1636 | if (set_time || set_dosattr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | time_buf.CreationTime = 0; /* do not change */ |
| 1638 | /* In the future we should experiment - try setting timestamps |
| 1639 | via Handle (SetFileInfo) instead of by path */ |
| 1640 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 1641 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1642 | cifs_sb->local_nls, |
| 1643 | cifs_sb->mnt_cifs_flags & |
| 1644 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | else |
| 1646 | rc = -EOPNOTSUPP; |
| 1647 | |
| 1648 | if (rc == -EOPNOTSUPP) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1649 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | __u16 netfid; |
| 1651 | |
| 1652 | cFYI(1, ("calling SetFileInfo since SetPathInfo for " |
| 1653 | "times not supported by this server")); |
| 1654 | /* BB we could scan to see if we already have it open |
| 1655 | and pass in pid of opener to function */ |
| 1656 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
| 1657 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1658 | CREATE_NOT_DIR, &netfid, &oplock, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1659 | NULL, cifs_sb->local_nls, |
| 1660 | cifs_sb->mnt_cifs_flags & |
| 1661 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1662 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf, |
| 1664 | netfid); |
| 1665 | CIFSSMBClose(xid, pTcon, netfid); |
| 1666 | } else { |
| 1667 | /* BB For even older servers we could convert time_buf |
| 1668 | into old DOS style which uses two second |
| 1669 | granularity */ |
| 1670 | |
| 1671 | /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1672 | &time_buf, cifs_sb->local_nls); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | } |
| 1674 | } |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1675 | /* Even if error on time set, no sense failing the call if |
| 1676 | the server would set the time to a reasonable value anyway, |
| 1677 | and this check ensures that we are not being called from |
| 1678 | sys_utimes in which case we ought to fail the call back to |
| 1679 | the user when the server rejects the call */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1680 | if ((rc) && (attrs->ia_valid & |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1681 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
| 1682 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | } |
| 1684 | |
| 1685 | /* do not need local check to inode_check_ok since the server does |
| 1686 | that */ |
| 1687 | if (!rc) |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1688 | rc = inode_setattr(inode, attrs); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1689 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | kfree(full_path); |
| 1691 | FreeXid(xid); |
| 1692 | return rc; |
| 1693 | } |
| 1694 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1695 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | void cifs_delete_inode(struct inode *inode) |
| 1697 | { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1698 | cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | /* may have to add back in if and when safe distributed caching of |
| 1700 | directories added e.g. via FindNotify */ |
| 1701 | } |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1702 | #endif |