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); |
Jeff Layton | e911d0c | 2008-07-12 13:47:59 -0700 | [diff] [blame] | 222 | if (rc == -EREMOTE && !is_dfs_referral) { |
| 223 | is_dfs_referral = true; |
| 224 | cFYI(DBG2, ("DFS ref")); |
| 225 | /* for DFS, server does not give us real inode data */ |
| 226 | fill_fake_finddataunix(&find_data, sb); |
| 227 | rc = 0; |
| 228 | } else if (rc) |
| 229 | goto cgiiu_exit; |
| 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; |
Jeff Layton | e911d0c | 2008-07-12 13:47:59 -0700 | [diff] [blame] | 239 | goto cgiiu_exit; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 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; |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 421 | umode_t default_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
| 423 | pTcon = cifs_sb->tcon; |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 424 | cFYI(1, ("Getting info on %s", full_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 426 | if ((pfindData == NULL) && (*pinode != NULL)) { |
| 427 | if (CIFS_I(*pinode)->clientCanCacheRead) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 428 | cFYI(1, ("No need to revalidate cached inode sizes")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | return rc; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | /* if file info not passed in then get it from server */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 434 | if (pfindData == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 436 | if (buf == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | return -ENOMEM; |
| 438 | pfindData = (FILE_ALL_INFO *)buf; |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | /* could do find first instead but this returns more info */ |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 441 | rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 442 | 0 /* not legacy */, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 443 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 444 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 445 | /* BB optimize code so we do not make the above call |
| 446 | when server claims no NT SMB support and the above call |
| 447 | failed at least once - set flag in tcon or mount */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 448 | if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 449 | rc = SMBQueryInformation(xid, pTcon, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 450 | pfindData, cifs_sb->local_nls, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 451 | cifs_sb->mnt_cifs_flags & |
| 452 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 453 | adjustTZ = true; |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 454 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 457 | if (rc == -EREMOTE) { |
| 458 | is_dfs_referral = true; |
| 459 | fill_fake_finddata(pfindData, sb); |
| 460 | rc = 0; |
| 461 | } else if (rc) |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 462 | goto cgii_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 464 | attr = le32_to_cpu(pfindData->Attributes); |
| 465 | |
| 466 | /* get new inode */ |
| 467 | if (*pinode == NULL) { |
| 468 | *pinode = new_inode(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | if (*pinode == NULL) { |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 470 | rc = -ENOMEM; |
| 471 | goto cgii_exit; |
| 472 | } |
| 473 | /* Is an i_ino of zero legal? Can we use that to check |
| 474 | if the server supports returning inode numbers? Are |
| 475 | there other sanity checks we can use to ensure that |
| 476 | the server is really filling in that field? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 478 | /* We can not use the IndexNumber field by default from |
| 479 | Windows or Samba (in ALL_INFO buf) but we can request |
| 480 | it explicitly. It may not be unique presumably if |
| 481 | the server has multiple devices mounted under one share */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 483 | /* There may be higher info levels that work but are |
| 484 | there Windows server or network appliances for which |
| 485 | IndexNumber field is not guaranteed unique? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 487 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 488 | int rc1 = 0; |
| 489 | __u64 inode_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 491 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 492 | full_path, &inode_num, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 493 | cifs_sb->local_nls, |
| 494 | cifs_sb->mnt_cifs_flags & |
| 495 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 496 | if (rc1) { |
| 497 | cFYI(1, ("GetSrvInodeNum rc %d", rc1)); |
| 498 | /* BB EOPNOSUPP disable SERVER_INUM? */ |
| 499 | } else /* do we need cast or hash to ino? */ |
| 500 | (*pinode)->i_ino = inode_num; |
| 501 | } /* else ino incremented to unique num in new_inode*/ |
| 502 | if (sb->s_flags & MS_NOATIME) |
| 503 | (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; |
| 504 | insert_inode_hash(*pinode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 506 | inode = *pinode; |
| 507 | cifsInfo = CIFS_I(inode); |
| 508 | cifsInfo->cifsAttrs = attr; |
| 509 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
| 510 | cifsInfo->time = jiffies; |
| 511 | cFYI(1, ("New time %ld", cifsInfo->time)); |
| 512 | |
| 513 | /* blksize needs to be multiple of two. So safer to default to |
| 514 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 515 | will match rather than setting to: |
| 516 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 517 | |
| 518 | /* Linux can not store file creation time so ignore it */ |
| 519 | if (pfindData->LastAccessTime) |
| 520 | inode->i_atime = cifs_NTtimeToUnix |
| 521 | (le64_to_cpu(pfindData->LastAccessTime)); |
| 522 | else /* do not need to use current_fs_time - time not stored */ |
| 523 | inode->i_atime = CURRENT_TIME; |
| 524 | inode->i_mtime = |
| 525 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); |
| 526 | inode->i_ctime = |
| 527 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); |
| 528 | cFYI(DBG2, ("Attributes came in as 0x%x", attr)); |
| 529 | if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) { |
| 530 | inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj; |
| 531 | inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj; |
| 532 | } |
| 533 | |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 534 | /* get default inode mode */ |
| 535 | if (attr & ATTR_DIRECTORY) |
| 536 | default_mode = cifs_sb->mnt_dir_mode; |
| 537 | else |
| 538 | default_mode = cifs_sb->mnt_file_mode; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 539 | |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 540 | /* set permission bits */ |
| 541 | if (atomic_read(&cifsInfo->inUse) == 0 || |
| 542 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) |
| 543 | inode->i_mode = default_mode; |
| 544 | else { |
| 545 | /* just reenable write bits if !ATTR_READONLY */ |
| 546 | if ((inode->i_mode & S_IWUGO) == 0 && |
| 547 | (attr & ATTR_READONLY) == 0) |
| 548 | inode->i_mode |= (S_IWUGO & default_mode); |
| 549 | inode->i_mode &= ~S_IFMT; |
| 550 | } |
| 551 | /* clear write bits if ATTR_READONLY is set */ |
| 552 | if (attr & ATTR_READONLY) |
| 553 | inode->i_mode &= ~S_IWUGO; |
| 554 | |
| 555 | /* set inode type */ |
| 556 | if ((attr & ATTR_SYSTEM) && |
| 557 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) { |
| 558 | /* no need to fix endianness on 0 */ |
| 559 | if (pfindData->EndOfFile == 0) |
| 560 | inode->i_mode |= S_IFIFO; |
| 561 | else if (decode_sfu_inode(inode, |
| 562 | le64_to_cpu(pfindData->EndOfFile), |
| 563 | full_path, cifs_sb, xid)) |
| 564 | cFYI(1, ("unknown SFU file type\n")); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 565 | } else { |
Jeff Layton | 4468eb3 | 2008-05-22 09:31:40 -0400 | [diff] [blame] | 566 | if (attr & ATTR_DIRECTORY) |
| 567 | inode->i_mode |= S_IFDIR; |
| 568 | else |
| 569 | inode->i_mode |= S_IFREG; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | spin_lock(&inode->i_lock); |
| 573 | if (is_size_safe_to_change(cifsInfo, |
| 574 | le64_to_cpu(pfindData->EndOfFile))) { |
| 575 | /* can not safely shrink the file size here if the |
| 576 | client is writing to it due to potential races */ |
| 577 | i_size_write(inode, le64_to_cpu(pfindData->EndOfFile)); |
| 578 | |
| 579 | /* 512 bytes (2**9) is the fake blocksize that must be |
| 580 | used for this calculation */ |
| 581 | inode->i_blocks = (512 - 1 + le64_to_cpu( |
| 582 | pfindData->AllocationSize)) >> 9; |
| 583 | } |
| 584 | spin_unlock(&inode->i_lock); |
| 585 | |
| 586 | inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); |
| 587 | |
| 588 | /* BB fill in uid and gid here? with help from winbind? |
| 589 | or retrieve from NTFS stream extended attribute */ |
| 590 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 591 | /* fill in 0777 bits from ACL */ |
| 592 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
| 593 | cFYI(1, ("Getting mode bits from ACL")); |
| 594 | acl_to_uid_mode(inode, full_path, pfid); |
| 595 | } |
| 596 | #endif |
| 597 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 598 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
| 599 | get_sfu_mode(inode, full_path, cifs_sb, xid); |
| 600 | } else if (atomic_read(&cifsInfo->inUse) == 0) { |
| 601 | inode->i_uid = cifs_sb->mnt_uid; |
| 602 | inode->i_gid = cifs_sb->mnt_gid; |
| 603 | /* set so we do not keep refreshing these fields with |
| 604 | bad data after user has changed them in memory */ |
| 605 | atomic_set(&cifsInfo->inUse, 1); |
| 606 | } |
| 607 | |
| 608 | cifs_set_ops(inode, is_dfs_referral); |
| 609 | |
| 610 | |
| 611 | |
| 612 | |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 613 | cgii_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | kfree(buf); |
| 615 | return rc; |
| 616 | } |
| 617 | |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 618 | static const struct inode_operations cifs_ipc_inode_ops = { |
| 619 | .lookup = cifs_lookup, |
| 620 | }; |
| 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | /* gets root inode */ |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 623 | struct inode *cifs_iget(struct super_block *sb, unsigned long ino) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | { |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 625 | int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | struct cifs_sb_info *cifs_sb; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 627 | struct inode *inode; |
| 628 | long rc; |
| 629 | |
| 630 | inode = iget_locked(sb, ino); |
| 631 | if (!inode) |
| 632 | return ERR_PTR(-ENOMEM); |
| 633 | if (!(inode->i_state & I_NEW)) |
| 634 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
| 636 | cifs_sb = CIFS_SB(inode->i_sb); |
| 637 | xid = GetXid(); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 638 | |
| 639 | if (cifs_sb->tcon->unix_ext) |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 640 | rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | else |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 642 | rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid, |
| 643 | NULL); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 644 | if (rc && cifs_sb->tcon->ipc) { |
| 645 | cFYI(1, ("ipc connection - fake read inode")); |
| 646 | inode->i_mode |= S_IFDIR; |
| 647 | inode->i_nlink = 2; |
| 648 | inode->i_op = &cifs_ipc_inode_ops; |
| 649 | inode->i_fop = &simple_dir_operations; |
| 650 | inode->i_uid = cifs_sb->mnt_uid; |
| 651 | inode->i_gid = cifs_sb->mnt_gid; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 652 | _FreeXid(xid); |
| 653 | iget_failed(inode); |
| 654 | return ERR_PTR(rc); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 655 | } |
| 656 | |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 657 | unlock_new_inode(inode); |
| 658 | |
| 659 | /* can not call macro FreeXid here since in a void func |
| 660 | * TODO: This is no longer true |
| 661 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | _FreeXid(xid); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 663 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | int cifs_unlink(struct inode *inode, struct dentry *direntry) |
| 667 | { |
| 668 | int rc = 0; |
| 669 | int xid; |
| 670 | struct cifs_sb_info *cifs_sb; |
| 671 | struct cifsTconInfo *pTcon; |
| 672 | char *full_path = NULL; |
| 673 | struct cifsInodeInfo *cifsInode; |
| 674 | FILE_BASIC_INFO *pinfo_buf; |
| 675 | |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 676 | cFYI(1, ("cifs_unlink, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
| 678 | xid = GetXid(); |
| 679 | |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 680 | if (inode) |
Steve French | 6910ab3 | 2006-03-31 03:37:08 +0000 | [diff] [blame] | 681 | cifs_sb = CIFS_SB(inode->i_sb); |
| 682 | else |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 683 | cifs_sb = CIFS_SB(direntry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | pTcon = cifs_sb->tcon; |
| 685 | |
| 686 | /* Unlink can be called from rename so we can not grab the sem here |
| 687 | since we deadlock otherwise */ |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 688 | /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 689 | full_path = build_path_from_dentry(direntry); |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 690 | /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | if (full_path == NULL) { |
| 692 | FreeXid(xid); |
| 693 | return -ENOMEM; |
| 694 | } |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 695 | |
| 696 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
| 697 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
| 698 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
| 699 | rc = CIFSPOSIXDelFile(xid, pTcon, full_path, |
| 700 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
| 701 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 702 | cFYI(1, ("posix del rc %d", rc)); |
| 703 | if ((rc == 0) || (rc == -ENOENT)) |
| 704 | goto psx_del_no_retry; |
| 705 | } |
| 706 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 707 | rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, |
| 708 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 709 | psx_del_no_retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 711 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 712 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | } else if (rc == -ENOENT) { |
| 714 | d_drop(direntry); |
| 715 | } else if (rc == -ETXTBSY) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 716 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | __u16 netfid; |
| 718 | |
| 719 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, |
| 720 | CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 721 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 722 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 723 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 724 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 726 | cifs_sb->local_nls, |
| 727 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 728 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 730 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 731 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | } |
| 733 | } else if (rc == -EACCES) { |
| 734 | /* try only if r/o attribute set in local lookup data? */ |
Eric Sesterhenn | a048d7a | 2006-02-21 22:33:09 +0000 | [diff] [blame] | 735 | pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | if (pinfo_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | /* ATTRS set to normal clears r/o bit */ |
| 738 | pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); |
| 739 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
Jeff Layton | 6fc000e | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 740 | rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | pinfo_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 742 | cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 743 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 744 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | else |
| 746 | rc = -EOPNOTSUPP; |
| 747 | |
| 748 | if (rc == -EOPNOTSUPP) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 749 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | __u16 netfid; |
| 751 | /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, |
| 752 | full_path, |
| 753 | (__u16)ATTR_NORMAL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 754 | cifs_sb->local_nls); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | For some strange reason it seems that NT4 eats the |
| 756 | old setattr call without actually setting the |
| 757 | attributes so on to the third attempted workaround |
| 758 | */ |
| 759 | |
| 760 | /* BB could scan to see if we already have it open |
| 761 | and pass in pid of opener to function */ |
| 762 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 763 | FILE_OPEN, SYNCHRONIZE | |
| 764 | FILE_WRITE_ATTRIBUTES, 0, |
| 765 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 766 | cifs_sb->local_nls, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 767 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 768 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 769 | if (rc == 0) { |
Jeff Layton | 2dd2dfa | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 770 | rc = CIFSSMBSetFileInfo(xid, pTcon, |
| 771 | pinfo_buf, |
| 772 | netfid, |
| 773 | current->tgid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | CIFSSMBClose(xid, pTcon, netfid); |
| 775 | } |
| 776 | } |
| 777 | kfree(pinfo_buf); |
| 778 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 779 | if (rc == 0) { |
| 780 | rc = CIFSSMBDelFile(xid, pTcon, full_path, |
| 781 | cifs_sb->local_nls, |
| 782 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 783 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 785 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 786 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | } else if (rc == -ETXTBSY) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 788 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | __u16 netfid; |
| 790 | |
| 791 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 792 | FILE_OPEN, DELETE, |
| 793 | CREATE_NOT_DIR | |
| 794 | CREATE_DELETE_ON_CLOSE, |
| 795 | &netfid, &oplock, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 796 | cifs_sb->local_nls, |
| 797 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 798 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 799 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | CIFSSMBRenameOpenFile(xid, pTcon, |
| 801 | netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 802 | cifs_sb->local_nls, |
| 803 | cifs_sb->mnt_cifs_flags & |
| 804 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 806 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 807 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } |
| 809 | /* BB if rc = -ETXTBUSY goto the rename logic BB */ |
| 810 | } |
| 811 | } |
| 812 | } |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 813 | if (direntry->d_inode) { |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 814 | cifsInode = CIFS_I(direntry->d_inode); |
| 815 | cifsInode->time = 0; /* will force revalidate to get info |
| 816 | when needed */ |
| 817 | direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); |
| 818 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 819 | if (inode) { |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 820 | inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); |
| 821 | cifsInode = CIFS_I(inode); |
| 822 | cifsInode->time = 0; /* force revalidate of dir as well */ |
| 823 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
| 825 | kfree(full_path); |
| 826 | FreeXid(xid); |
| 827 | return rc; |
| 828 | } |
| 829 | |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 830 | static void posix_fill_in_inode(struct inode *tmp_inode, |
Steve French | 0b442d2 | 2008-02-26 03:44:02 +0000 | [diff] [blame] | 831 | FILE_UNIX_BASIC_INFO *pData, int isNewInode) |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 832 | { |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 833 | struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 834 | loff_t local_size; |
| 835 | struct timespec local_mtime; |
| 836 | |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 837 | cifsInfo->time = jiffies; |
| 838 | atomic_inc(&cifsInfo->inUse); |
| 839 | |
| 840 | /* save mtime and size */ |
| 841 | local_mtime = tmp_inode->i_mtime; |
| 842 | local_size = tmp_inode->i_size; |
| 843 | |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 844 | cifs_unix_info_to_inode(tmp_inode, pData, 1); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 845 | cifs_set_ops(tmp_inode, false); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 846 | |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 847 | if (!S_ISREG(tmp_inode->i_mode)) |
| 848 | return; |
| 849 | |
| 850 | /* |
| 851 | * No sense invalidating pages for new inode |
| 852 | * since we we have not started caching |
| 853 | * readahead file data yet. |
| 854 | */ |
| 855 | if (isNewInode) |
| 856 | return; |
| 857 | |
| 858 | if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) && |
| 859 | (local_size == tmp_inode->i_size)) { |
| 860 | cFYI(1, ("inode exists but unchanged")); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 861 | } else { |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 862 | /* file may have changed on server */ |
| 863 | cFYI(1, ("invalidate inode, readdir detected change")); |
| 864 | invalidate_remote_inode(tmp_inode); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 865 | } |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 866 | } |
| 867 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
| 869 | { |
| 870 | int rc = 0; |
| 871 | int xid; |
| 872 | struct cifs_sb_info *cifs_sb; |
| 873 | struct cifsTconInfo *pTcon; |
| 874 | char *full_path = NULL; |
| 875 | struct inode *newinode = NULL; |
| 876 | |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 877 | 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] | 878 | |
| 879 | xid = GetXid(); |
| 880 | |
| 881 | cifs_sb = CIFS_SB(inode->i_sb); |
| 882 | pTcon = cifs_sb->tcon; |
| 883 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 884 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | if (full_path == NULL) { |
| 886 | FreeXid(xid); |
| 887 | return -ENOMEM; |
| 888 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 889 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 890 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
| 891 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 892 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
| 893 | u32 oplock = 0; |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 894 | FILE_UNIX_BASIC_INFO *pInfo = |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 895 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 896 | if (pInfo == NULL) { |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 897 | rc = -ENOMEM; |
| 898 | goto mkdir_out; |
| 899 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 900 | |
Jeff | a8cd925 | 2007-09-13 18:38:50 +0000 | [diff] [blame] | 901 | mode &= ~current->fs->umask; |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 902 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
| 903 | mode, NULL /* netfid */, pInfo, &oplock, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 904 | full_path, cifs_sb->local_nls, |
| 905 | cifs_sb->mnt_cifs_flags & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 906 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 907 | if (rc == -EOPNOTSUPP) { |
| 908 | kfree(pInfo); |
| 909 | goto mkdir_retry_old; |
| 910 | } else if (rc) { |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 911 | cFYI(1, ("posix mkdir returned 0x%x", rc)); |
| 912 | d_drop(direntry); |
| 913 | } else { |
Cyril Gorcunov | 8f2376a | 2007-10-14 17:58:43 +0000 | [diff] [blame] | 914 | if (pInfo->Type == cpu_to_le32(-1)) { |
| 915 | /* no return info, go query for it */ |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 916 | kfree(pInfo); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 917 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 918 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 919 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need |
| 920 | to set uid/gid */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 921 | inc_nlink(inode); |
| 922 | if (pTcon->nocase) |
| 923 | direntry->d_op = &cifs_ci_dentry_ops; |
| 924 | else |
| 925 | direntry->d_op = &cifs_dentry_ops; |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 926 | |
| 927 | newinode = new_inode(inode->i_sb); |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 928 | if (newinode == NULL) { |
| 929 | kfree(pInfo); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 930 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 931 | } |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 932 | /* Is an i_ino of zero legal? */ |
| 933 | /* Are there sanity checks we can use to ensure that |
| 934 | the server is really filling in that field? */ |
| 935 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 936 | newinode->i_ino = |
| 937 | (unsigned long)pInfo->UniqueId; |
| 938 | } /* note ino incremented to unique num in new_inode */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 939 | if (inode->i_sb->s_flags & MS_NOATIME) |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 940 | newinode->i_flags |= S_NOATIME | S_NOCMTIME; |
| 941 | newinode->i_nlink = 2; |
| 942 | |
| 943 | insert_inode_hash(newinode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 944 | d_instantiate(direntry, newinode); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 945 | |
| 946 | /* we already checked in POSIXCreate whether |
| 947 | frame was long enough */ |
| 948 | posix_fill_in_inode(direntry->d_inode, |
Steve French | 0b442d2 | 2008-02-26 03:44:02 +0000 | [diff] [blame] | 949 | pInfo, 1 /* NewInode */); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 950 | #ifdef CONFIG_CIFS_DEBUG2 |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 951 | cFYI(1, ("instantiated dentry %p %s to inode %p", |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 952 | direntry, direntry->d_name.name, newinode)); |
| 953 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 954 | if (newinode->i_nlink != 2) |
| 955 | cFYI(1, ("unexpected number of links %d", |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 956 | newinode->i_nlink)); |
| 957 | #endif |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 958 | } |
| 959 | kfree(pInfo); |
| 960 | goto mkdir_out; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 961 | } |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 962 | mkdir_retry_old: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 964 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 965 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | if (rc) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 967 | cFYI(1, ("cifs_mkdir returned 0x%x", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | d_drop(direntry); |
| 969 | } else { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 970 | mkdir_get_info: |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 971 | inc_nlink(inode); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 972 | if (pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 974 | inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | else |
| 976 | rc = cifs_get_inode_info(&newinode, full_path, NULL, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 977 | inode->i_sb, xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 979 | if (pTcon->nocase) |
| 980 | direntry->d_op = &cifs_ci_dentry_ops; |
| 981 | else |
| 982 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | d_instantiate(direntry, newinode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 984 | /* setting nlink not necessary except in cases where we |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 985 | * failed to get it from the server or was set bogus */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 986 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 987 | direntry->d_inode->i_nlink = 2; |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame^] | 988 | |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 989 | mode &= ~current->fs->umask; |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame^] | 990 | /* must turn on setgid bit if parent dir has it */ |
| 991 | if (inode->i_mode & S_ISGID) |
| 992 | mode |= S_ISGID; |
| 993 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 994 | if (pTcon->unix_ext) { |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 995 | struct cifs_unix_set_info_args args = { |
| 996 | .mode = mode, |
| 997 | .ctime = NO_CHANGE_64, |
| 998 | .atime = NO_CHANGE_64, |
| 999 | .mtime = NO_CHANGE_64, |
| 1000 | .device = 0, |
| 1001 | }; |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 1002 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1003 | args.uid = (__u64)current->fsuid; |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame^] | 1004 | if (inode->i_mode & S_ISGID) |
| 1005 | args.gid = (__u64)inode->i_gid; |
| 1006 | else |
| 1007 | args.gid = (__u64)current->fsgid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | } else { |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1009 | args.uid = NO_CHANGE_64; |
| 1010 | args.gid = NO_CHANGE_64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1012 | CIFSSMBUnixSetInfo(xid, pTcon, full_path, &args, |
| 1013 | cifs_sb->local_nls, |
| 1014 | cifs_sb->mnt_cifs_flags & |
| 1015 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 1016 | } else { |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1017 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
| 1018 | (mode & S_IWUGO) == 0) { |
| 1019 | FILE_BASIC_INFO pInfo; |
| 1020 | memset(&pInfo, 0, sizeof(pInfo)); |
| 1021 | pInfo.Attributes = cpu_to_le32(ATTR_READONLY); |
Jeff Layton | 6fc000e | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1022 | CIFSSMBSetPathInfo(xid, pTcon, full_path, |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1023 | &pInfo, cifs_sb->local_nls, |
| 1024 | cifs_sb->mnt_cifs_flags & |
| 1025 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1026 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1027 | if (direntry->d_inode) { |
Jeff Layton | b0fd30d | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1028 | if (cifs_sb->mnt_cifs_flags & |
| 1029 | CIFS_MOUNT_DYNPERM) |
| 1030 | direntry->d_inode->i_mode = |
| 1031 | (mode | S_IFDIR); |
Steve French | 4e94a10 | 2008-05-23 18:22:46 +0000 | [diff] [blame] | 1032 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1033 | if (cifs_sb->mnt_cifs_flags & |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1034 | CIFS_MOUNT_SET_UID) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1035 | direntry->d_inode->i_uid = |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1036 | current->fsuid; |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame^] | 1037 | if (inode->i_mode & S_ISGID) |
| 1038 | direntry->d_inode->i_gid = |
| 1039 | inode->i_gid; |
| 1040 | else |
| 1041 | direntry->d_inode->i_gid = |
| 1042 | current->fsgid; |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1043 | } |
| 1044 | } |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1045 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1047 | mkdir_out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | kfree(full_path); |
| 1049 | FreeXid(xid); |
| 1050 | return rc; |
| 1051 | } |
| 1052 | |
| 1053 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 1054 | { |
| 1055 | int rc = 0; |
| 1056 | int xid; |
| 1057 | struct cifs_sb_info *cifs_sb; |
| 1058 | struct cifsTconInfo *pTcon; |
| 1059 | char *full_path = NULL; |
| 1060 | struct cifsInodeInfo *cifsInode; |
| 1061 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1062 | cFYI(1, ("cifs_rmdir, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
| 1064 | xid = GetXid(); |
| 1065 | |
| 1066 | cifs_sb = CIFS_SB(inode->i_sb); |
| 1067 | pTcon = cifs_sb->tcon; |
| 1068 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1069 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | if (full_path == NULL) { |
| 1071 | FreeXid(xid); |
| 1072 | return -ENOMEM; |
| 1073 | } |
| 1074 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1075 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 1076 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | |
| 1078 | if (!rc) { |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 1079 | drop_nlink(inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1080 | spin_lock(&direntry->d_inode->i_lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1081 | i_size_write(direntry->d_inode, 0); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 1082 | clear_nlink(direntry->d_inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1083 | spin_unlock(&direntry->d_inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | cifsInode = CIFS_I(direntry->d_inode); |
| 1087 | cifsInode->time = 0; /* force revalidate to go get info when |
| 1088 | needed */ |
| 1089 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
| 1090 | current_fs_time(inode->i_sb); |
| 1091 | |
| 1092 | kfree(full_path); |
| 1093 | FreeXid(xid); |
| 1094 | return rc; |
| 1095 | } |
| 1096 | |
| 1097 | int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, |
| 1098 | struct inode *target_inode, struct dentry *target_direntry) |
| 1099 | { |
| 1100 | char *fromName; |
| 1101 | char *toName; |
| 1102 | struct cifs_sb_info *cifs_sb_source; |
| 1103 | struct cifs_sb_info *cifs_sb_target; |
| 1104 | struct cifsTconInfo *pTcon; |
| 1105 | int xid; |
| 1106 | int rc = 0; |
| 1107 | |
| 1108 | xid = GetXid(); |
| 1109 | |
| 1110 | cifs_sb_target = CIFS_SB(target_inode->i_sb); |
| 1111 | cifs_sb_source = CIFS_SB(source_inode->i_sb); |
| 1112 | pTcon = cifs_sb_source->tcon; |
| 1113 | |
| 1114 | if (pTcon != cifs_sb_target->tcon) { |
| 1115 | FreeXid(xid); |
| 1116 | return -EXDEV; /* BB actually could be allowed if same server, |
| 1117 | but different share. |
| 1118 | Might eventually add support for this */ |
| 1119 | } |
| 1120 | |
| 1121 | /* we already have the rename sem so we do not need to grab it again |
| 1122 | here to protect the path integrity */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1123 | fromName = build_path_from_dentry(source_direntry); |
| 1124 | toName = build_path_from_dentry(target_direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | if ((fromName == NULL) || (toName == NULL)) { |
| 1126 | rc = -ENOMEM; |
| 1127 | goto cifs_rename_exit; |
| 1128 | } |
| 1129 | |
| 1130 | rc = CIFSSMBRename(xid, pTcon, fromName, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1131 | cifs_sb_source->local_nls, |
| 1132 | cifs_sb_source->mnt_cifs_flags & |
| 1133 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | if (rc == -EEXIST) { |
| 1135 | /* check if they are the same file because rename of hardlinked |
| 1136 | files is a noop */ |
| 1137 | FILE_UNIX_BASIC_INFO *info_buf_source; |
| 1138 | FILE_UNIX_BASIC_INFO *info_buf_target; |
| 1139 | |
| 1140 | info_buf_source = |
| 1141 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
| 1142 | if (info_buf_source != NULL) { |
| 1143 | info_buf_target = info_buf_source + 1; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1144 | if (pTcon->unix_ext) |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1145 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1146 | info_buf_source, |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1147 | cifs_sb_source->local_nls, |
| 1148 | cifs_sb_source->mnt_cifs_flags & |
| 1149 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1150 | /* else rc is still EEXIST so will fall through to |
| 1151 | unlink the target and retry rename */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | if (rc == 0) { |
| 1153 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, |
| 1154 | info_buf_target, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1155 | cifs_sb_target->local_nls, |
| 1156 | /* remap based on source sb */ |
| 1157 | cifs_sb_source->mnt_cifs_flags & |
| 1158 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
| 1160 | if ((rc == 0) && |
| 1161 | (info_buf_source->UniqueId == |
| 1162 | info_buf_target->UniqueId)) { |
| 1163 | /* do not rename since the files are hardlinked which |
| 1164 | is a noop */ |
| 1165 | } else { |
| 1166 | /* we either can not tell the files are hardlinked |
| 1167 | (as with Windows servers) or files are not |
| 1168 | hardlinked so delete the target manually before |
| 1169 | renaming to follow POSIX rather than Windows |
| 1170 | semantics */ |
| 1171 | cifs_unlink(target_inode, target_direntry); |
| 1172 | rc = CIFSSMBRename(xid, pTcon, fromName, |
| 1173 | toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1174 | cifs_sb_source->local_nls, |
| 1175 | cifs_sb_source->mnt_cifs_flags |
| 1176 | & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | } |
| 1178 | kfree(info_buf_source); |
| 1179 | } /* if we can not get memory just leave rc as EEXIST */ |
| 1180 | } |
| 1181 | |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 1182 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | cFYI(1, ("rename rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | |
| 1185 | if ((rc == -EIO) || (rc == -EEXIST)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1186 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | __u16 netfid; |
| 1188 | |
| 1189 | /* BB FIXME Is Generic Read correct for rename? */ |
| 1190 | /* if renaming directory - we should not say CREATE_NOT_DIR, |
| 1191 | need to test renaming open directory, also GENERIC_READ |
| 1192 | might not right be right access to request */ |
| 1193 | rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, |
| 1194 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1195 | cifs_sb_source->local_nls, |
| 1196 | cifs_sb_source->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1197 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1198 | if (rc == 0) { |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 1199 | rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1200 | cifs_sb_source->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1201 | cifs_sb_source->mnt_cifs_flags & |
| 1202 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | CIFSSMBClose(xid, pTcon, netfid); |
| 1204 | } |
| 1205 | } |
| 1206 | |
| 1207 | cifs_rename_exit: |
| 1208 | kfree(fromName); |
| 1209 | kfree(toName); |
| 1210 | FreeXid(xid); |
| 1211 | return rc; |
| 1212 | } |
| 1213 | |
| 1214 | int cifs_revalidate(struct dentry *direntry) |
| 1215 | { |
| 1216 | int xid; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1217 | int rc = 0, wbrc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | char *full_path; |
| 1219 | struct cifs_sb_info *cifs_sb; |
| 1220 | struct cifsInodeInfo *cifsInode; |
| 1221 | loff_t local_size; |
| 1222 | struct timespec local_mtime; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1223 | bool invalidate_inode = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
| 1225 | if (direntry->d_inode == NULL) |
| 1226 | return -ENOENT; |
| 1227 | |
| 1228 | cifsInode = CIFS_I(direntry->d_inode); |
| 1229 | |
| 1230 | if (cifsInode == NULL) |
| 1231 | return -ENOENT; |
| 1232 | |
| 1233 | /* no sense revalidating inode info on file that no one can write */ |
| 1234 | if (CIFS_I(direntry->d_inode)->clientCanCacheRead) |
| 1235 | return rc; |
| 1236 | |
| 1237 | xid = GetXid(); |
| 1238 | |
| 1239 | cifs_sb = CIFS_SB(direntry->d_sb); |
| 1240 | |
| 1241 | /* can not safely grab the rename sem here if rename calls revalidate |
| 1242 | since that would deadlock */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1243 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | if (full_path == NULL) { |
| 1245 | FreeXid(xid); |
| 1246 | return -ENOMEM; |
| 1247 | } |
| 1248 | cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " |
| 1249 | "jiffies %ld", full_path, direntry->d_inode, |
| 1250 | direntry->d_inode->i_count.counter, direntry, |
| 1251 | direntry->d_time, jiffies)); |
| 1252 | |
| 1253 | if (cifsInode->time == 0) { |
| 1254 | /* was set to zero previously to force revalidate */ |
| 1255 | } else if (time_before(jiffies, cifsInode->time + HZ) && |
| 1256 | lookupCacheEnabled) { |
| 1257 | if ((S_ISREG(direntry->d_inode->i_mode) == 0) || |
| 1258 | (direntry->d_inode->i_nlink == 1)) { |
| 1259 | kfree(full_path); |
| 1260 | FreeXid(xid); |
| 1261 | return rc; |
| 1262 | } else { |
| 1263 | cFYI(1, ("Have to revalidate file due to hardlinks")); |
| 1264 | } |
| 1265 | } |
| 1266 | |
| 1267 | /* save mtime and size */ |
| 1268 | local_mtime = direntry->d_inode->i_mtime; |
| 1269 | local_size = direntry->d_inode->i_size; |
| 1270 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1271 | if (cifs_sb->tcon->unix_ext) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1273 | direntry->d_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | if (rc) { |
| 1275 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1276 | /* if (rc != -ENOENT) |
| 1277 | rc = 0; */ /* BB should we cache info on |
| 1278 | certain errors? */ |
| 1279 | } |
| 1280 | } else { |
| 1281 | rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 1282 | direntry->d_sb, xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | if (rc) { |
| 1284 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1285 | /* if (rc != -ENOENT) |
| 1286 | rc = 0; */ /* BB should we cache info on |
| 1287 | certain errors? */ |
| 1288 | } |
| 1289 | } |
| 1290 | /* should we remap certain errors, access denied?, to zero */ |
| 1291 | |
| 1292 | /* if not oplocked, we invalidate inode pages if mtime or file size |
| 1293 | had changed on server */ |
| 1294 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1295 | if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | (local_size == direntry->d_inode->i_size)) { |
| 1297 | cFYI(1, ("cifs_revalidate - inode unchanged")); |
| 1298 | } else { |
| 1299 | /* file may have changed on server */ |
| 1300 | if (cifsInode->clientCanCacheRead) { |
| 1301 | /* no need to invalidate inode pages since we were the |
| 1302 | only ones who could have modified the file and the |
| 1303 | server copy is staler than ours */ |
| 1304 | } else { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1305 | invalidate_inode = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | /* can not grab this sem since kernel filesys locking documentation |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1310 | indicates i_mutex may be taken by the kernel on lookup and rename |
| 1311 | which could deadlock if we grab the i_mutex here as well */ |
| 1312 | /* mutex_lock(&direntry->d_inode->i_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | /* need to write out dirty pages here */ |
| 1314 | if (direntry->d_inode->i_mapping) { |
| 1315 | /* do we need to lock inode until after invalidate completes |
| 1316 | below? */ |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1317 | wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping); |
| 1318 | if (wbrc) |
| 1319 | CIFS_I(direntry->d_inode)->write_behind_rc = wbrc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | } |
| 1321 | if (invalidate_inode) { |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1322 | /* shrink_dcache not necessary now that cifs dentry ops |
| 1323 | are exported for negative dentries */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1324 | /* if (S_ISDIR(direntry->d_inode->i_mode)) |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1325 | shrink_dcache_parent(direntry); */ |
| 1326 | if (S_ISREG(direntry->d_inode->i_mode)) { |
Suresh Jayaraman | 9e96af8 | 2008-08-05 14:38:40 +0530 | [diff] [blame] | 1327 | if (direntry->d_inode->i_mapping) { |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1328 | wbrc = filemap_fdatawait(direntry->d_inode->i_mapping); |
| 1329 | if (wbrc) |
| 1330 | CIFS_I(direntry->d_inode)->write_behind_rc = wbrc; |
Suresh Jayaraman | 9e96af8 | 2008-08-05 14:38:40 +0530 | [diff] [blame] | 1331 | } |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1332 | /* may eventually have to do this for open files too */ |
| 1333 | if (list_empty(&(cifsInode->openFileList))) { |
| 1334 | /* changed on server - flush read ahead pages */ |
| 1335 | cFYI(1, ("Invalidating read ahead data on " |
| 1336 | "closed file")); |
| 1337 | invalidate_remote_inode(direntry->d_inode); |
| 1338 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
| 1340 | } |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1341 | /* mutex_unlock(&direntry->d_inode->i_mutex); */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1342 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | kfree(full_path); |
| 1344 | FreeXid(xid); |
| 1345 | return rc; |
| 1346 | } |
| 1347 | |
| 1348 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 1349 | struct kstat *stat) |
| 1350 | { |
| 1351 | int err = cifs_revalidate(dentry); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1352 | if (!err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | generic_fillattr(dentry->d_inode, stat); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1354 | stat->blksize = CIFS_MAX_MSGSIZE; |
| 1355 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | return err; |
| 1357 | } |
| 1358 | |
| 1359 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1360 | { |
| 1361 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1362 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1363 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | int rc = 0; |
| 1365 | |
| 1366 | page = grab_cache_page(mapping, index); |
| 1367 | if (!page) |
| 1368 | return -ENOMEM; |
| 1369 | |
Christoph Lameter | eebd2aa | 2008-02-04 22:28:29 -0800 | [diff] [blame] | 1370 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | unlock_page(page); |
| 1372 | page_cache_release(page); |
| 1373 | return rc; |
| 1374 | } |
| 1375 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1376 | static int cifs_vmtruncate(struct inode *inode, loff_t offset) |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1377 | { |
| 1378 | struct address_space *mapping = inode->i_mapping; |
| 1379 | unsigned long limit; |
| 1380 | |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1381 | spin_lock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1382 | if (inode->i_size < offset) |
| 1383 | goto do_expand; |
| 1384 | /* |
| 1385 | * truncation of in-use swapfiles is disallowed - it would cause |
| 1386 | * subsequent swapout to scribble on the now-freed blocks. |
| 1387 | */ |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1388 | if (IS_SWAPFILE(inode)) { |
| 1389 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1390 | goto out_busy; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1391 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1392 | i_size_write(inode, offset); |
| 1393 | spin_unlock(&inode->i_lock); |
Steve French | 8064ab4 | 2007-08-22 22:12:07 +0000 | [diff] [blame] | 1394 | /* |
| 1395 | * unmap_mapping_range is called twice, first simply for efficiency |
| 1396 | * so that truncate_inode_pages does fewer single-page unmaps. However |
| 1397 | * after this first call, and before truncate_inode_pages finishes, |
| 1398 | * it is possible for private pages to be COWed, which remain after |
| 1399 | * truncate_inode_pages finishes, hence the second unmap_mapping_range |
| 1400 | * call must be made for correctness. |
| 1401 | */ |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1402 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); |
| 1403 | truncate_inode_pages(mapping, offset); |
Steve French | 8064ab4 | 2007-08-22 22:12:07 +0000 | [diff] [blame] | 1404 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1405 | goto out_truncate; |
| 1406 | |
| 1407 | do_expand: |
| 1408 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1409 | if (limit != RLIM_INFINITY && offset > limit) { |
| 1410 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1411 | goto out_sig; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1412 | } |
| 1413 | if (offset > inode->i_sb->s_maxbytes) { |
| 1414 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1415 | goto out_big; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1416 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1417 | i_size_write(inode, offset); |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1418 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1419 | out_truncate: |
| 1420 | if (inode->i_op && inode->i_op->truncate) |
| 1421 | inode->i_op->truncate(inode); |
| 1422 | return 0; |
| 1423 | out_sig: |
| 1424 | send_sig(SIGXFSZ, current, 0); |
| 1425 | out_big: |
| 1426 | return -EFBIG; |
| 1427 | out_busy: |
| 1428 | return -ETXTBSY; |
| 1429 | } |
| 1430 | |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1431 | static int |
| 1432 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, |
| 1433 | int xid, char *full_path) |
| 1434 | { |
| 1435 | int rc; |
| 1436 | struct cifsFileInfo *open_file; |
| 1437 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 1438 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 1439 | struct cifsTconInfo *pTcon = cifs_sb->tcon; |
| 1440 | |
| 1441 | /* |
| 1442 | * To avoid spurious oplock breaks from server, in the case of |
| 1443 | * inodes that we already have open, avoid doing path based |
| 1444 | * setting of file size if we can do it by handle. |
| 1445 | * This keeps our caching token (oplock) and avoids timeouts |
| 1446 | * when the local oplock break takes longer to flush |
| 1447 | * writebehind data than the SMB timeout for the SetPathInfo |
| 1448 | * request would allow |
| 1449 | */ |
| 1450 | open_file = find_writable_file(cifsInode); |
| 1451 | if (open_file) { |
| 1452 | __u16 nfid = open_file->netfid; |
| 1453 | __u32 npid = open_file->pid; |
| 1454 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid, |
| 1455 | npid, false); |
| 1456 | atomic_dec(&open_file->wrtPending); |
| 1457 | cFYI(1, ("SetFSize for attrs rc = %d", rc)); |
| 1458 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 1459 | unsigned int bytes_written; |
| 1460 | rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size, |
| 1461 | &bytes_written, NULL, NULL, 1); |
| 1462 | cFYI(1, ("Wrt seteof rc %d", rc)); |
| 1463 | } |
| 1464 | } else |
| 1465 | rc = -EINVAL; |
| 1466 | |
| 1467 | if (rc != 0) { |
| 1468 | /* Set file size by pathname rather than by handle |
| 1469 | either because no valid, writeable file handle for |
| 1470 | it was found or because there was an error setting |
| 1471 | it by handle */ |
| 1472 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, |
| 1473 | false, cifs_sb->local_nls, |
| 1474 | cifs_sb->mnt_cifs_flags & |
| 1475 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1476 | cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); |
| 1477 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 1478 | __u16 netfid; |
| 1479 | int oplock = 0; |
| 1480 | |
| 1481 | rc = SMBLegacyOpen(xid, pTcon, full_path, |
| 1482 | FILE_OPEN, GENERIC_WRITE, |
| 1483 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 1484 | cifs_sb->local_nls, |
| 1485 | cifs_sb->mnt_cifs_flags & |
| 1486 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1487 | if (rc == 0) { |
| 1488 | unsigned int bytes_written; |
| 1489 | rc = CIFSSMBWrite(xid, pTcon, netfid, 0, |
| 1490 | attrs->ia_size, |
| 1491 | &bytes_written, NULL, |
| 1492 | NULL, 1); |
| 1493 | cFYI(1, ("wrt seteof rc %d", rc)); |
| 1494 | CIFSSMBClose(xid, pTcon, netfid); |
| 1495 | } |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | if (rc == 0) { |
| 1500 | rc = cifs_vmtruncate(inode, attrs->ia_size); |
| 1501 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
| 1502 | } |
| 1503 | |
| 1504 | return rc; |
| 1505 | } |
| 1506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | int cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 1508 | { |
| 1509 | int xid; |
| 1510 | struct cifs_sb_info *cifs_sb; |
| 1511 | struct cifsTconInfo *pTcon; |
| 1512 | char *full_path = NULL; |
| 1513 | int rc = -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | FILE_BASIC_INFO time_buf; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1515 | bool set_time = false; |
| 1516 | bool set_dosattr = false; |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1517 | __u64 mode = NO_CHANGE_64; |
| 1518 | __u64 uid = NO_CHANGE_64; |
| 1519 | __u64 gid = NO_CHANGE_64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | struct cifsInodeInfo *cifsInode; |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1521 | struct inode *inode = direntry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
| 1523 | xid = GetXid(); |
| 1524 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1525 | cFYI(1, ("setattr on file %s attrs->iavalid 0x%x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | direntry->d_name.name, attrs->ia_valid)); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1527 | |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1528 | cifs_sb = CIFS_SB(inode->i_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | pTcon = cifs_sb->tcon; |
| 1530 | |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1531 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1532 | /* check if we have permission to change attrs */ |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1533 | rc = inode_change_ok(inode, attrs); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1534 | if (rc < 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1535 | FreeXid(xid); |
| 1536 | return rc; |
| 1537 | } else |
| 1538 | rc = 0; |
| 1539 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1540 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1541 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | if (full_path == NULL) { |
| 1543 | FreeXid(xid); |
| 1544 | return -ENOMEM; |
| 1545 | } |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1546 | cifsInode = CIFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1548 | if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) { |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1549 | /* |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1550 | Flush data before changing file size or changing the last |
| 1551 | write time of the file on the server. If the |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1552 | flush returns error, store it to report later and continue. |
| 1553 | BB: This should be smarter. Why bother flushing pages that |
| 1554 | will be truncated anyway? Also, should we error out here if |
| 1555 | the flush returns error? |
| 1556 | */ |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1557 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1558 | if (rc != 0) { |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1559 | cifsInode->write_behind_rc = rc; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1560 | rc = 0; |
| 1561 | } |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1562 | } |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 1563 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 1564 | if (attrs->ia_valid & ATTR_SIZE) { |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1565 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
| 1566 | if (rc != 0) |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1567 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | } |
Jeff Layton | 4ca691a | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1569 | |
| 1570 | /* |
| 1571 | * Without unix extensions we can't send ownership changes to the |
| 1572 | * server, so silently ignore them. This is consistent with how |
| 1573 | * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With |
| 1574 | * CIFSACL support + proper Windows to Unix idmapping, we may be |
| 1575 | * able to support this in the future. |
| 1576 | */ |
| 1577 | if (!pTcon->unix_ext && |
| 1578 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) { |
| 1579 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
| 1580 | } else { |
| 1581 | if (attrs->ia_valid & ATTR_UID) { |
| 1582 | cFYI(1, ("UID changed to %d", attrs->ia_uid)); |
| 1583 | uid = attrs->ia_uid; |
| 1584 | } |
| 1585 | if (attrs->ia_valid & ATTR_GID) { |
| 1586 | cFYI(1, ("GID changed to %d", attrs->ia_gid)); |
| 1587 | gid = attrs->ia_gid; |
| 1588 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | } |
| 1590 | |
| 1591 | time_buf.Attributes = 0; |
Jeff Layton | d32c4f2 | 2007-10-18 03:05:22 -0700 | [diff] [blame] | 1592 | |
| 1593 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 1594 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 1595 | attrs->ia_valid &= ~ATTR_MODE; |
| 1596 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | if (attrs->ia_valid & ATTR_MODE) { |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1598 | cFYI(1, ("Mode changed to 0%o", attrs->ia_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | mode = attrs->ia_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | } |
| 1601 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1602 | if ((pTcon->unix_ext) |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1603 | && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) { |
| 1604 | struct cifs_unix_set_info_args args = { |
| 1605 | .mode = mode, |
| 1606 | .uid = uid, |
| 1607 | .gid = gid, |
| 1608 | .ctime = NO_CHANGE_64, |
| 1609 | .atime = NO_CHANGE_64, |
| 1610 | .mtime = NO_CHANGE_64, |
| 1611 | .device = 0, |
| 1612 | }; |
| 1613 | rc = CIFSSMBUnixSetInfo(xid, pTcon, full_path, &args, |
| 1614 | cifs_sb->local_nls, |
| 1615 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1616 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1617 | } else if (attrs->ia_valid & ATTR_MODE) { |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 1618 | rc = 0; |
Steve French | 9783758 | 2007-12-31 07:47:21 +0000 | [diff] [blame] | 1619 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 1620 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1621 | rc = mode_to_acl(inode, full_path, mode); |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1622 | else |
Steve French | 9783758 | 2007-12-31 07:47:21 +0000 | [diff] [blame] | 1623 | #endif |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1624 | if (((mode & S_IWUGO) == 0) && |
| 1625 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
| 1626 | set_dosattr = true; |
| 1627 | time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs | |
| 1628 | ATTR_READONLY); |
| 1629 | /* fix up mode if we're not using dynperm */ |
| 1630 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) |
| 1631 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; |
| 1632 | } else if ((mode & S_IWUGO) && |
| 1633 | (cifsInode->cifsAttrs & ATTR_READONLY)) { |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1634 | /* If file is readonly on server, we would |
| 1635 | not be able to write to it - so if any write |
| 1636 | bit is enabled for user or group or other we |
| 1637 | need to at least try to remove r/o dos attr */ |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1638 | set_dosattr = true; |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1639 | time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs & |
| 1640 | (~ATTR_READONLY)); |
| 1641 | /* Windows ignores set to zero */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1642 | if (time_buf.Attributes == 0) |
Steve French | 5268df2 | 2007-04-06 19:28:16 +0000 | [diff] [blame] | 1643 | time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL); |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1644 | |
| 1645 | /* reset local inode permissions to normal */ |
| 1646 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 1647 | attrs->ia_mode &= ~(S_IALLUGO); |
| 1648 | if (S_ISDIR(inode->i_mode)) |
| 1649 | attrs->ia_mode |= |
| 1650 | cifs_sb->mnt_dir_mode; |
| 1651 | else |
| 1652 | attrs->ia_mode |= |
| 1653 | cifs_sb->mnt_file_mode; |
| 1654 | } |
| 1655 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 1656 | /* ignore mode change - ATTR_READONLY hasn't changed */ |
| 1657 | attrs->ia_valid &= ~ATTR_MODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | } |
| 1660 | |
| 1661 | if (attrs->ia_valid & ATTR_ATIME) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1662 | set_time = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | time_buf.LastAccessTime = |
| 1664 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 1665 | } else |
| 1666 | time_buf.LastAccessTime = 0; |
| 1667 | |
| 1668 | if (attrs->ia_valid & ATTR_MTIME) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1669 | set_time = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | time_buf.LastWriteTime = |
| 1671 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 1672 | } else |
| 1673 | time_buf.LastWriteTime = 0; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1674 | /* Do not set ctime explicitly unless other time |
| 1675 | stamps are changed explicitly (i.e. by utime() |
| 1676 | since we would then have a mix of client and |
| 1677 | server times */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1678 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1679 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1680 | set_time = true; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1681 | /* Although Samba throws this field away |
| 1682 | it may be useful to Windows - but we do |
| 1683 | not want to set ctime unless some other |
| 1684 | timestamp is changing */ |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1685 | cFYI(1, ("CIFS - CTIME changed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | time_buf.ChangeTime = |
| 1687 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 1688 | } else |
| 1689 | time_buf.ChangeTime = 0; |
| 1690 | |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1691 | if (set_time || set_dosattr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | time_buf.CreationTime = 0; /* do not change */ |
| 1693 | /* In the future we should experiment - try setting timestamps |
| 1694 | via Handle (SetFileInfo) instead of by path */ |
| 1695 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
Jeff Layton | 6fc000e | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1696 | rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, |
| 1697 | &time_buf, cifs_sb->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1698 | cifs_sb->mnt_cifs_flags & |
| 1699 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | else |
| 1701 | rc = -EOPNOTSUPP; |
| 1702 | |
| 1703 | if (rc == -EOPNOTSUPP) { |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 1704 | int oplock = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | __u16 netfid; |
| 1706 | |
| 1707 | cFYI(1, ("calling SetFileInfo since SetPathInfo for " |
| 1708 | "times not supported by this server")); |
| 1709 | /* BB we could scan to see if we already have it open |
| 1710 | and pass in pid of opener to function */ |
| 1711 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
| 1712 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1713 | CREATE_NOT_DIR, &netfid, &oplock, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1714 | NULL, cifs_sb->local_nls, |
| 1715 | cifs_sb->mnt_cifs_flags & |
| 1716 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1717 | if (rc == 0) { |
Jeff Layton | 2dd2dfa | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1718 | rc = CIFSSMBSetFileInfo(xid, pTcon, &time_buf, |
| 1719 | netfid, current->tgid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | CIFSSMBClose(xid, pTcon, netfid); |
| 1721 | } else { |
| 1722 | /* BB For even older servers we could convert time_buf |
| 1723 | into old DOS style which uses two second |
| 1724 | granularity */ |
| 1725 | |
| 1726 | /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1727 | &time_buf, cifs_sb->local_nls); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | } |
| 1729 | } |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1730 | /* Even if error on time set, no sense failing the call if |
| 1731 | the server would set the time to a reasonable value anyway, |
| 1732 | and this check ensures that we are not being called from |
| 1733 | sys_utimes in which case we ought to fail the call back to |
| 1734 | the user when the server rejects the call */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1735 | if ((rc) && (attrs->ia_valid & |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1736 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
| 1737 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | |
| 1740 | /* do not need local check to inode_check_ok since the server does |
| 1741 | that */ |
| 1742 | if (!rc) |
Jeff Layton | 02eadef | 2008-05-09 21:26:11 +0000 | [diff] [blame] | 1743 | rc = inode_setattr(inode, attrs); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1744 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | kfree(full_path); |
| 1746 | FreeXid(xid); |
| 1747 | return rc; |
| 1748 | } |
| 1749 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1750 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | void cifs_delete_inode(struct inode *inode) |
| 1752 | { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1753 | cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | /* may have to add back in if and when safe distributed caching of |
| 1755 | directories added e.g. via FindNotify */ |
| 1756 | } |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1757 | #endif |