Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/inode.c |
| 3 | * |
| 4 | * Copyright (C) International Business Machines Corp., 2002,2005 |
| 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 | |
| 32 | int cifs_get_inode_info_unix(struct inode **pinode, |
| 33 | const unsigned char *search_path, struct super_block *sb, int xid) |
| 34 | { |
| 35 | int rc = 0; |
| 36 | FILE_UNIX_BASIC_INFO findData; |
| 37 | struct cifsTconInfo *pTcon; |
| 38 | struct inode *inode; |
| 39 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 40 | char *tmp_path; |
| 41 | |
| 42 | pTcon = cifs_sb->tcon; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 43 | cFYI(1, ("Getting info on %s", search_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | /* could have done a find first instead but this returns more info */ |
| 45 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 46 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 47 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* dump_mem("\nUnixQPathInfo return data", &findData, |
| 49 | sizeof(findData)); */ |
| 50 | if (rc) { |
| 51 | if (rc == -EREMOTE) { |
| 52 | tmp_path = |
| 53 | kmalloc(strnlen(pTcon->treeName, |
| 54 | MAX_TREE_SIZE + 1) + |
| 55 | strnlen(search_path, MAX_PATHCONF) + 1, |
| 56 | GFP_KERNEL); |
| 57 | if (tmp_path == NULL) { |
| 58 | return -ENOMEM; |
| 59 | } |
| 60 | /* have to skip first of the double backslash of |
| 61 | UNC name */ |
| 62 | strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE); |
| 63 | strncat(tmp_path, search_path, MAX_PATHCONF); |
| 64 | rc = connect_to_dfs_path(xid, pTcon->ses, |
| 65 | /* treename + */ tmp_path, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 66 | cifs_sb->local_nls, |
| 67 | cifs_sb->mnt_cifs_flags & |
| 68 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | kfree(tmp_path); |
| 70 | |
| 71 | /* BB fix up inode etc. */ |
| 72 | } else if (rc) { |
| 73 | return rc; |
| 74 | } |
| 75 | } else { |
| 76 | struct cifsInodeInfo *cifsInfo; |
| 77 | __u32 type = le32_to_cpu(findData.Type); |
| 78 | __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes); |
| 79 | __u64 end_of_file = le64_to_cpu(findData.EndOfFile); |
| 80 | |
| 81 | /* get new inode */ |
| 82 | if (*pinode == NULL) { |
| 83 | *pinode = new_inode(sb); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 84 | if (*pinode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | return -ENOMEM; |
| 86 | /* Is an i_ino of zero legal? */ |
| 87 | /* Are there sanity checks we can use to ensure that |
| 88 | the server is really filling in that field? */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 89 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | (*pinode)->i_ino = |
| 91 | (unsigned long)findData.UniqueId; |
| 92 | } /* note ino incremented to unique num in new_inode */ |
Steve French | 1b2b212 | 2007-02-17 04:30:54 +0000 | [diff] [blame] | 93 | if(sb->s_flags & MS_NOATIME) |
| 94 | (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | insert_inode_hash(*pinode); |
| 97 | } |
| 98 | |
| 99 | inode = *pinode; |
| 100 | cifsInfo = CIFS_I(inode); |
| 101 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 102 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | cifsInfo->time = jiffies; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 104 | cFYI(1, ("New time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | /* this is ok to set on every inode revalidate */ |
| 106 | atomic_set(&cifsInfo->inUse,1); |
| 107 | |
| 108 | inode->i_atime = |
| 109 | cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime)); |
| 110 | inode->i_mtime = |
| 111 | cifs_NTtimeToUnix(le64_to_cpu |
| 112 | (findData.LastModificationTime)); |
| 113 | inode->i_ctime = |
| 114 | cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange)); |
| 115 | inode->i_mode = le64_to_cpu(findData.Permissions); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 116 | /* since we set the inode type below we need to mask off |
| 117 | to avoid strange results if bits set above */ |
| 118 | inode->i_mode &= ~S_IFMT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | if (type == UNIX_FILE) { |
| 120 | inode->i_mode |= S_IFREG; |
| 121 | } else if (type == UNIX_SYMLINK) { |
| 122 | inode->i_mode |= S_IFLNK; |
| 123 | } else if (type == UNIX_DIR) { |
| 124 | inode->i_mode |= S_IFDIR; |
| 125 | } else if (type == UNIX_CHARDEV) { |
| 126 | inode->i_mode |= S_IFCHR; |
| 127 | inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor), |
| 128 | le64_to_cpu(findData.DevMinor) & MINORMASK); |
| 129 | } else if (type == UNIX_BLOCKDEV) { |
| 130 | inode->i_mode |= S_IFBLK; |
| 131 | inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor), |
| 132 | le64_to_cpu(findData.DevMinor) & MINORMASK); |
| 133 | } else if (type == UNIX_FIFO) { |
| 134 | inode->i_mode |= S_IFIFO; |
| 135 | } else if (type == UNIX_SOCKET) { |
| 136 | inode->i_mode |= S_IFSOCK; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 137 | } else { |
| 138 | /* safest to call it a file if we do not know */ |
| 139 | inode->i_mode |= S_IFREG; |
| 140 | cFYI(1,("unknown type %d",type)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | } |
| 142 | inode->i_uid = le64_to_cpu(findData.Uid); |
| 143 | inode->i_gid = le64_to_cpu(findData.Gid); |
| 144 | inode->i_nlink = le64_to_cpu(findData.Nlinks); |
| 145 | |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 146 | spin_lock(&inode->i_lock); |
Steve French | 7ba5263 | 2007-02-08 18:14:13 +0000 | [diff] [blame] | 147 | if (is_size_safe_to_change(cifsInfo, end_of_file)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | /* can not safely change the file size here if the |
| 149 | client is writing to it due to potential races */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | i_size_write(inode, end_of_file); |
| 151 | |
| 152 | /* blksize needs to be multiple of two. So safer to default to |
| 153 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 154 | will match rather than setting to: |
| 155 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 156 | |
| 157 | /* This seems incredibly stupid but it turns out that i_blocks |
| 158 | is not related to (i_size / i_blksize), instead 512 byte size |
| 159 | is required for calculating num blocks */ |
| 160 | |
| 161 | /* 512 bytes (2**9) is the fake blocksize that must be used */ |
| 162 | /* for this calculation */ |
| 163 | inode->i_blocks = (512 - 1 + num_of_bytes) >> 9; |
| 164 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 165 | spin_unlock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
| 167 | if (num_of_bytes < end_of_file) |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 168 | cFYI(1, ("allocation size less than end of file")); |
Andrew Morton | 5515eff | 2006-03-26 01:37:53 -0800 | [diff] [blame] | 169 | cFYI(1, ("Size %ld and blocks %llu", |
| 170 | (unsigned long) inode->i_size, |
| 171 | (unsigned long long)inode->i_blocks)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | if (S_ISREG(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 173 | cFYI(1, ("File inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | inode->i_op = &cifs_file_inode_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 175 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 176 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 177 | inode->i_fop = |
| 178 | &cifs_file_direct_nobrl_ops; |
| 179 | else |
| 180 | inode->i_fop = &cifs_file_direct_ops; |
| 181 | } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 182 | inode->i_fop = &cifs_file_nobrl_ops; |
| 183 | else /* not direct, send byte range locks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | inode->i_fop = &cifs_file_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 185 | |
Steve French | bfa0d75 | 2005-08-31 21:50:37 -0700 | [diff] [blame] | 186 | /* check if server can support readpages */ |
| 187 | if(pTcon->ses->server->maxBuf < |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 188 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 189 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 190 | else |
| 191 | inode->i_data.a_ops = &cifs_addr_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | } else if (S_ISDIR(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 193 | cFYI(1, ("Directory inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | inode->i_op = &cifs_dir_inode_ops; |
| 195 | inode->i_fop = &cifs_dir_ops; |
| 196 | } else if (S_ISLNK(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 197 | cFYI(1, ("Symbolic Link inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | inode->i_op = &cifs_symlink_inode_ops; |
| 199 | /* tmp_inode->i_fop = */ /* do not need to set to anything */ |
| 200 | } else { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 201 | cFYI(1, ("Init special inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | init_special_inode(inode, inode->i_mode, |
| 203 | inode->i_rdev); |
| 204 | } |
| 205 | } |
| 206 | return rc; |
| 207 | } |
| 208 | |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 209 | static int decode_sfu_inode(struct inode * inode, __u64 size, |
| 210 | const unsigned char *path, |
| 211 | struct cifs_sb_info *cifs_sb, int xid) |
| 212 | { |
| 213 | int rc; |
| 214 | int oplock = FALSE; |
| 215 | __u16 netfid; |
| 216 | struct cifsTconInfo *pTcon = cifs_sb->tcon; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 217 | char buf[24]; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 218 | unsigned int bytes_read; |
| 219 | char * pbuf; |
| 220 | |
| 221 | pbuf = buf; |
| 222 | |
| 223 | if(size == 0) { |
| 224 | inode->i_mode |= S_IFIFO; |
| 225 | return 0; |
| 226 | } else if (size < 8) { |
| 227 | return -EINVAL; /* EOPNOTSUPP? */ |
| 228 | } |
| 229 | |
| 230 | rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ, |
| 231 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 232 | cifs_sb->local_nls, |
| 233 | cifs_sb->mnt_cifs_flags & |
| 234 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 235 | if (rc==0) { |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 236 | int buf_type = CIFS_NO_BUFFER; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 237 | /* Read header */ |
| 238 | rc = CIFSSMBRead(xid, pTcon, |
| 239 | netfid, |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 240 | 24 /* length */, 0 /* offset */, |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 241 | &bytes_read, &pbuf, &buf_type); |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 242 | if((rc == 0) && (bytes_read >= 8)) { |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 243 | if(memcmp("IntxBLK", pbuf, 8) == 0) { |
| 244 | cFYI(1,("Block device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 245 | inode->i_mode |= S_IFBLK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 246 | if(bytes_read == 24) { |
| 247 | /* we have enough to decode dev num */ |
| 248 | __u64 mjr; /* major */ |
| 249 | __u64 mnr; /* minor */ |
| 250 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 251 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 252 | inode->i_rdev = MKDEV(mjr, mnr); |
| 253 | } |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 254 | } else if(memcmp("IntxCHR", pbuf, 8) == 0) { |
| 255 | cFYI(1,("Char device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 256 | inode->i_mode |= S_IFCHR; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 257 | if(bytes_read == 24) { |
| 258 | /* we have enough to decode dev num */ |
| 259 | __u64 mjr; /* major */ |
| 260 | __u64 mnr; /* minor */ |
| 261 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 262 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 263 | inode->i_rdev = MKDEV(mjr, mnr); |
| 264 | } |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 265 | } else if(memcmp("IntxLNK", pbuf, 7) == 0) { |
| 266 | cFYI(1,("Symlink")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 267 | inode->i_mode |= S_IFLNK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 268 | } else { |
| 269 | inode->i_mode |= S_IFREG; /* file? */ |
| 270 | rc = -EOPNOTSUPP; |
| 271 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 272 | } else { |
| 273 | inode->i_mode |= S_IFREG; /* then it is a file */ |
| 274 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 275 | } |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 276 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 277 | } |
| 278 | return rc; |
| 279 | |
| 280 | } |
| 281 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 282 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
| 283 | |
| 284 | static int get_sfu_uid_mode(struct inode * inode, |
| 285 | const unsigned char *path, |
| 286 | struct cifs_sb_info *cifs_sb, int xid) |
| 287 | { |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 288 | #ifdef CONFIG_CIFS_XATTR |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 289 | ssize_t rc; |
| 290 | char ea_value[4]; |
| 291 | __u32 mode; |
| 292 | |
| 293 | rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS", |
| 294 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
| 295 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 296 | if(rc < 0) |
| 297 | return (int)rc; |
| 298 | else if (rc > 3) { |
| 299 | mode = le32_to_cpu(*((__le32 *)ea_value)); |
Steve French | c119b87 | 2005-11-18 12:27:27 -0800 | [diff] [blame] | 300 | inode->i_mode &= ~SFBITS_MASK; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 301 | 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] | 302 | inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode; |
| 303 | cFYI(1,("special mode bits 0%o", mode)); |
| 304 | return 0; |
| 305 | } else { |
| 306 | return 0; |
| 307 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 308 | #else |
| 309 | return -EOPNOTSUPP; |
| 310 | #endif |
| 311 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 312 | |
| 313 | } |
| 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | int cifs_get_inode_info(struct inode **pinode, |
| 316 | const unsigned char *search_path, FILE_ALL_INFO *pfindData, |
| 317 | struct super_block *sb, int xid) |
| 318 | { |
| 319 | int rc = 0; |
| 320 | struct cifsTconInfo *pTcon; |
| 321 | struct inode *inode; |
| 322 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 323 | char *tmp_path; |
| 324 | char *buf = NULL; |
Steve French | 8d6286f | 2006-11-16 22:48:25 +0000 | [diff] [blame] | 325 | int adjustTZ = FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | pTcon = cifs_sb->tcon; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 328 | cFYI(1,("Getting info on %s", search_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 330 | if ((pfindData == NULL) && (*pinode != NULL)) { |
| 331 | if (CIFS_I(*pinode)->clientCanCacheRead) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | cFYI(1,("No need to revalidate cached inode sizes")); |
| 333 | return rc; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | /* if file info not passed in then get it from server */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 338 | if (pfindData == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 340 | if (buf == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | return -ENOMEM; |
| 342 | pfindData = (FILE_ALL_INFO *)buf; |
| 343 | /* could do find first instead but this returns more info */ |
| 344 | rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData, |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 345 | 0 /* not legacy */, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 346 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 347 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 348 | /* BB optimize code so we do not make the above call |
| 349 | when server claims no NT SMB support and the above call |
| 350 | failed at least once - set flag in tcon or mount */ |
| 351 | if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
| 352 | rc = SMBQueryInformation(xid, pTcon, search_path, |
| 353 | pfindData, cifs_sb->local_nls, |
| 354 | cifs_sb->mnt_cifs_flags & |
| 355 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 8d6286f | 2006-11-16 22:48:25 +0000 | [diff] [blame] | 356 | adjustTZ = TRUE; |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 357 | } |
| 358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } |
| 360 | /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ |
| 361 | if (rc) { |
| 362 | if (rc == -EREMOTE) { |
| 363 | tmp_path = |
| 364 | kmalloc(strnlen |
| 365 | (pTcon->treeName, |
| 366 | MAX_TREE_SIZE + 1) + |
| 367 | strnlen(search_path, MAX_PATHCONF) + 1, |
| 368 | GFP_KERNEL); |
| 369 | if (tmp_path == NULL) { |
| 370 | kfree(buf); |
| 371 | return -ENOMEM; |
| 372 | } |
| 373 | |
| 374 | strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE); |
| 375 | strncat(tmp_path, search_path, MAX_PATHCONF); |
| 376 | rc = connect_to_dfs_path(xid, pTcon->ses, |
| 377 | /* treename + */ tmp_path, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 378 | cifs_sb->local_nls, |
| 379 | cifs_sb->mnt_cifs_flags & |
| 380 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | kfree(tmp_path); |
| 382 | /* BB fix up inode etc. */ |
| 383 | } else if (rc) { |
| 384 | kfree(buf); |
| 385 | return rc; |
| 386 | } |
| 387 | } else { |
| 388 | struct cifsInodeInfo *cifsInfo; |
| 389 | __u32 attr = le32_to_cpu(pfindData->Attributes); |
| 390 | |
| 391 | /* get new inode */ |
| 392 | if (*pinode == NULL) { |
| 393 | *pinode = new_inode(sb); |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 394 | if (*pinode == NULL) { |
| 395 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | return -ENOMEM; |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 397 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | /* Is an i_ino of zero legal? Can we use that to check |
| 399 | if the server supports returning inode numbers? Are |
| 400 | there other sanity checks we can use to ensure that |
| 401 | the server is really filling in that field? */ |
| 402 | |
| 403 | /* We can not use the IndexNumber field by default from |
| 404 | Windows or Samba (in ALL_INFO buf) but we can request |
| 405 | it explicitly. It may not be unique presumably if |
| 406 | the server has multiple devices mounted under one |
| 407 | share */ |
| 408 | |
| 409 | /* There may be higher info levels that work but are |
| 410 | there Windows server or network appliances for which |
| 411 | IndexNumber field is not guaranteed unique? */ |
| 412 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 413 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | int rc1 = 0; |
| 415 | __u64 inode_num; |
| 416 | |
| 417 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, |
| 418 | search_path, &inode_num, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 419 | cifs_sb->local_nls, |
| 420 | cifs_sb->mnt_cifs_flags & |
| 421 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 422 | if (rc1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | cFYI(1,("GetSrvInodeNum rc %d", rc1)); |
| 424 | /* BB EOPNOSUPP disable SERVER_INUM? */ |
| 425 | } else /* do we need cast or hash to ino? */ |
| 426 | (*pinode)->i_ino = inode_num; |
| 427 | } /* else ino incremented to unique num in new_inode*/ |
Steve French | 1b2b212 | 2007-02-17 04:30:54 +0000 | [diff] [blame] | 428 | if(sb->s_flags & MS_NOATIME) |
| 429 | (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | insert_inode_hash(*pinode); |
| 431 | } |
| 432 | inode = *pinode; |
| 433 | cifsInfo = CIFS_I(inode); |
| 434 | cifsInfo->cifsAttrs = attr; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 435 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | cifsInfo->time = jiffies; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 437 | cFYI(1, ("New time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | /* blksize needs to be multiple of two. So safer to default to |
| 440 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 441 | will match rather than setting to: |
| 442 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 443 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 444 | /* Linux can not store file creation time so ignore it */ |
Steve French | 1bd5bbc | 2006-09-28 03:35:57 +0000 | [diff] [blame] | 445 | if(pfindData->LastAccessTime) |
| 446 | inode->i_atime = cifs_NTtimeToUnix |
| 447 | (le64_to_cpu(pfindData->LastAccessTime)); |
| 448 | else /* do not need to use current_fs_time - time not stored */ |
| 449 | inode->i_atime = CURRENT_TIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | inode->i_mtime = |
| 451 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); |
| 452 | inode->i_ctime = |
| 453 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 454 | cFYI(0, ("Attributes came in as 0x%x", attr)); |
Steve French | 8d6286f | 2006-11-16 22:48:25 +0000 | [diff] [blame] | 455 | if(adjustTZ && (pTcon->ses) && (pTcon->ses->server)) { |
| 456 | inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj; |
| 457 | inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj; |
| 458 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
| 460 | /* set default mode. will override for dirs below */ |
| 461 | if (atomic_read(&cifsInfo->inUse) == 0) |
| 462 | /* new inode, can safely set these fields */ |
| 463 | inode->i_mode = cifs_sb->mnt_file_mode; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 464 | else /* since we set the inode type below we need to mask off |
| 465 | to avoid strange results if type changes and both get orred in */ |
| 466 | inode->i_mode &= ~S_IFMT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | /* if (attr & ATTR_REPARSE) */ |
| 468 | /* We no longer handle these as symlinks because we could not |
| 469 | follow them due to the absolute path with drive letter */ |
| 470 | if (attr & ATTR_DIRECTORY) { |
| 471 | /* override default perms since we do not do byte range locking |
| 472 | on dirs */ |
| 473 | inode->i_mode = cifs_sb->mnt_dir_mode; |
| 474 | inode->i_mode |= S_IFDIR; |
Steve French | eda3c02 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 475 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 476 | (cifsInfo->cifsAttrs & ATTR_SYSTEM) && |
| 477 | /* No need to le64 convert size of zero */ |
| 478 | (pfindData->EndOfFile == 0)) { |
| 479 | inode->i_mode = cifs_sb->mnt_file_mode; |
| 480 | inode->i_mode |= S_IFIFO; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 481 | /* BB Finish for SFU style symlinks and devices */ |
| 482 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 483 | (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { |
| 484 | if (decode_sfu_inode(inode, |
| 485 | le64_to_cpu(pfindData->EndOfFile), |
| 486 | search_path, |
| 487 | cifs_sb, xid)) { |
| 488 | cFYI(1,("Unrecognized sfu inode type")); |
| 489 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 490 | cFYI(1,("sfu mode 0%o",inode->i_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | } else { |
| 492 | inode->i_mode |= S_IFREG; |
| 493 | /* treat the dos attribute of read-only as read-only |
| 494 | mode e.g. 555 */ |
| 495 | if (cifsInfo->cifsAttrs & ATTR_READONLY) |
| 496 | inode->i_mode &= ~(S_IWUGO); |
Alan Tyson | f5c1e2e | 2007-03-10 06:05:14 +0000 | [diff] [blame] | 497 | else if ((inode->i_mode & S_IWUGO) == 0) |
| 498 | /* the ATTR_READONLY flag may have been */ |
| 499 | /* changed on server -- set any w bits */ |
| 500 | /* allowed by mnt_file_mode */ |
| 501 | inode->i_mode |= (S_IWUGO & |
| 502 | cifs_sb->mnt_file_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | /* BB add code here - |
| 504 | validate if device or weird share or device type? */ |
| 505 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 506 | |
| 507 | spin_lock(&inode->i_lock); |
Steve French | 7ba5263 | 2007-02-08 18:14:13 +0000 | [diff] [blame] | 508 | if (is_size_safe_to_change(cifsInfo, le64_to_cpu(pfindData->EndOfFile))) { |
| 509 | /* can not safely shrink the file size here if the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | client is writing to it due to potential races */ |
| 511 | i_size_write(inode,le64_to_cpu(pfindData->EndOfFile)); |
| 512 | |
| 513 | /* 512 bytes (2**9) is the fake blocksize that must be |
| 514 | used for this calculation */ |
| 515 | inode->i_blocks = (512 - 1 + le64_to_cpu( |
| 516 | pfindData->AllocationSize)) >> 9; |
| 517 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 518 | spin_unlock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
| 520 | inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); |
| 521 | |
| 522 | /* BB fill in uid and gid here? with help from winbind? |
| 523 | or retrieve from NTFS stream extended attribute */ |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 524 | if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 525 | /* fill in uid, gid, mode from server ACL */ |
| 526 | get_sfu_uid_mode(inode, search_path, cifs_sb, xid); |
| 527 | } else if (atomic_read(&cifsInfo->inUse) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | inode->i_uid = cifs_sb->mnt_uid; |
| 529 | inode->i_gid = cifs_sb->mnt_gid; |
| 530 | /* set so we do not keep refreshing these fields with |
| 531 | bad data after user has changed them in memory */ |
| 532 | atomic_set(&cifsInfo->inUse,1); |
| 533 | } |
| 534 | |
| 535 | if (S_ISREG(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 536 | cFYI(1, ("File inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | inode->i_op = &cifs_file_inode_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 538 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 539 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 540 | inode->i_fop = |
| 541 | &cifs_file_direct_nobrl_ops; |
| 542 | else |
| 543 | inode->i_fop = &cifs_file_direct_ops; |
| 544 | } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 545 | inode->i_fop = &cifs_file_nobrl_ops; |
| 546 | else /* not direct, send byte range locks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | inode->i_fop = &cifs_file_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 548 | |
Steve French | bfa0d75 | 2005-08-31 21:50:37 -0700 | [diff] [blame] | 549 | if(pTcon->ses->server->maxBuf < |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 550 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 551 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 552 | else |
| 553 | inode->i_data.a_ops = &cifs_addr_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } else if (S_ISDIR(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 555 | cFYI(1, ("Directory inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | inode->i_op = &cifs_dir_inode_ops; |
| 557 | inode->i_fop = &cifs_dir_ops; |
| 558 | } else if (S_ISLNK(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 559 | cFYI(1, ("Symbolic Link inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | inode->i_op = &cifs_symlink_inode_ops; |
| 561 | } else { |
| 562 | init_special_inode(inode, inode->i_mode, |
| 563 | inode->i_rdev); |
| 564 | } |
| 565 | } |
| 566 | kfree(buf); |
| 567 | return rc; |
| 568 | } |
| 569 | |
| 570 | /* gets root inode */ |
| 571 | void cifs_read_inode(struct inode *inode) |
| 572 | { |
| 573 | int xid; |
| 574 | struct cifs_sb_info *cifs_sb; |
| 575 | |
| 576 | cifs_sb = CIFS_SB(inode->i_sb); |
| 577 | xid = GetXid(); |
| 578 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
| 579 | cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid); |
| 580 | else |
| 581 | cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid); |
| 582 | /* can not call macro FreeXid here since in a void func */ |
| 583 | _FreeXid(xid); |
| 584 | } |
| 585 | |
| 586 | int cifs_unlink(struct inode *inode, struct dentry *direntry) |
| 587 | { |
| 588 | int rc = 0; |
| 589 | int xid; |
| 590 | struct cifs_sb_info *cifs_sb; |
| 591 | struct cifsTconInfo *pTcon; |
| 592 | char *full_path = NULL; |
| 593 | struct cifsInodeInfo *cifsInode; |
| 594 | FILE_BASIC_INFO *pinfo_buf; |
| 595 | |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 596 | cFYI(1, ("cifs_unlink, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | xid = GetXid(); |
| 599 | |
Steve French | 6910ab3 | 2006-03-31 03:37:08 +0000 | [diff] [blame] | 600 | if(inode) |
| 601 | cifs_sb = CIFS_SB(inode->i_sb); |
| 602 | else |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 603 | cifs_sb = CIFS_SB(direntry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | pTcon = cifs_sb->tcon; |
| 605 | |
| 606 | /* Unlink can be called from rename so we can not grab the sem here |
| 607 | since we deadlock otherwise */ |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 608 | /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 609 | full_path = build_path_from_dentry(direntry); |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 610 | /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | if (full_path == NULL) { |
| 612 | FreeXid(xid); |
| 613 | return -ENOMEM; |
| 614 | } |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 615 | rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, |
| 616 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
| 618 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 619 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 620 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | } else if (rc == -ENOENT) { |
| 622 | d_drop(direntry); |
| 623 | } else if (rc == -ETXTBSY) { |
| 624 | int oplock = FALSE; |
| 625 | __u16 netfid; |
| 626 | |
| 627 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, |
| 628 | CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 629 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
| 630 | cifs_sb->mnt_cifs_flags & |
| 631 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if (rc==0) { |
| 633 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 634 | cifs_sb->local_nls, |
| 635 | cifs_sb->mnt_cifs_flags & |
| 636 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 638 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 639 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | } |
| 641 | } else if (rc == -EACCES) { |
| 642 | /* try only if r/o attribute set in local lookup data? */ |
Eric Sesterhenn | a048d7a | 2006-02-21 22:33:09 +0000 | [diff] [blame] | 643 | pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | if (pinfo_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | /* ATTRS set to normal clears r/o bit */ |
| 646 | pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); |
| 647 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 648 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, |
| 649 | pinfo_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 650 | cifs_sb->local_nls, |
| 651 | cifs_sb->mnt_cifs_flags & |
| 652 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | else |
| 654 | rc = -EOPNOTSUPP; |
| 655 | |
| 656 | if (rc == -EOPNOTSUPP) { |
| 657 | int oplock = FALSE; |
| 658 | __u16 netfid; |
| 659 | /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, |
| 660 | full_path, |
| 661 | (__u16)ATTR_NORMAL, |
| 662 | cifs_sb->local_nls); |
| 663 | For some strange reason it seems that NT4 eats the |
| 664 | old setattr call without actually setting the |
| 665 | attributes so on to the third attempted workaround |
| 666 | */ |
| 667 | |
| 668 | /* BB could scan to see if we already have it open |
| 669 | and pass in pid of opener to function */ |
| 670 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 671 | FILE_OPEN, SYNCHRONIZE | |
| 672 | FILE_WRITE_ATTRIBUTES, 0, |
| 673 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 674 | cifs_sb->local_nls, |
| 675 | cifs_sb->mnt_cifs_flags & |
| 676 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | if (rc==0) { |
| 678 | rc = CIFSSMBSetFileTimes(xid, pTcon, |
| 679 | pinfo_buf, |
| 680 | netfid); |
| 681 | CIFSSMBClose(xid, pTcon, netfid); |
| 682 | } |
| 683 | } |
| 684 | kfree(pinfo_buf); |
| 685 | } |
| 686 | if (rc==0) { |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 687 | rc = CIFSSMBDelFile(xid, pTcon, full_path, |
| 688 | cifs_sb->local_nls, |
| 689 | cifs_sb->mnt_cifs_flags & |
| 690 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 692 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 693 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } else if (rc == -ETXTBSY) { |
| 695 | int oplock = FALSE; |
| 696 | __u16 netfid; |
| 697 | |
| 698 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 699 | FILE_OPEN, DELETE, |
| 700 | CREATE_NOT_DIR | |
| 701 | CREATE_DELETE_ON_CLOSE, |
| 702 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 703 | cifs_sb->local_nls, |
| 704 | cifs_sb->mnt_cifs_flags & |
| 705 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | if (rc==0) { |
| 707 | CIFSSMBRenameOpenFile(xid, pTcon, |
| 708 | netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 709 | cifs_sb->local_nls, |
| 710 | cifs_sb->mnt_cifs_flags & |
| 711 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 713 | if (direntry->d_inode) |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 714 | drop_nlink(direntry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | /* BB if rc = -ETXTBUSY goto the rename logic BB */ |
| 717 | } |
| 718 | } |
| 719 | } |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 720 | if (direntry->d_inode) { |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 721 | cifsInode = CIFS_I(direntry->d_inode); |
| 722 | cifsInode->time = 0; /* will force revalidate to get info |
| 723 | when needed */ |
| 724 | direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); |
| 725 | } |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 726 | if(inode) { |
| 727 | inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); |
| 728 | cifsInode = CIFS_I(inode); |
| 729 | cifsInode->time = 0; /* force revalidate of dir as well */ |
| 730 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
| 732 | kfree(full_path); |
| 733 | FreeXid(xid); |
| 734 | return rc; |
| 735 | } |
| 736 | |
| 737 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
| 738 | { |
| 739 | int rc = 0; |
| 740 | int xid; |
| 741 | struct cifs_sb_info *cifs_sb; |
| 742 | struct cifsTconInfo *pTcon; |
| 743 | char *full_path = NULL; |
| 744 | struct inode *newinode = NULL; |
| 745 | |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 746 | 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] | 747 | |
| 748 | xid = GetXid(); |
| 749 | |
| 750 | cifs_sb = CIFS_SB(inode->i_sb); |
| 751 | pTcon = cifs_sb->tcon; |
| 752 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 753 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | if (full_path == NULL) { |
| 755 | FreeXid(xid); |
| 756 | return -ENOMEM; |
| 757 | } |
| 758 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 759 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 760 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | if (rc) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 762 | cFYI(1, ("cifs_mkdir returned 0x%x", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | d_drop(direntry); |
| 764 | } else { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 765 | inc_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | if (pTcon->ses->capabilities & CAP_UNIX) |
| 767 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
| 768 | inode->i_sb,xid); |
| 769 | else |
| 770 | rc = cifs_get_inode_info(&newinode, full_path, NULL, |
| 771 | inode->i_sb,xid); |
| 772 | |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 773 | if (pTcon->nocase) |
| 774 | direntry->d_op = &cifs_ci_dentry_ops; |
| 775 | else |
| 776 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | d_instantiate(direntry, newinode); |
| 778 | if (direntry->d_inode) |
| 779 | direntry->d_inode->i_nlink = 2; |
| 780 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 781 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 783 | mode, |
Steve French | 8345187 | 2005-12-01 17:12:59 -0800 | [diff] [blame] | 784 | (__u64)current->fsuid, |
| 785 | (__u64)current->fsgid, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 787 | cifs_sb->local_nls, |
| 788 | cifs_sb->mnt_cifs_flags & |
| 789 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } else { |
| 791 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 792 | mode, (__u64)-1, |
| 793 | (__u64)-1, 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 794 | cifs_sb->local_nls, |
| 795 | cifs_sb->mnt_cifs_flags & |
| 796 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | } |
| 798 | else { |
| 799 | /* BB to be implemented via Windows secrty descriptors |
| 800 | eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, |
| 801 | -1, -1, local_nls); */ |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 802 | if(direntry->d_inode) { |
| 803 | direntry->d_inode->i_mode = mode; |
Steve French | 25741b3 | 2005-11-29 22:38:43 -0800 | [diff] [blame] | 804 | direntry->d_inode->i_mode |= S_IFDIR; |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 805 | if(cifs_sb->mnt_cifs_flags & |
| 806 | CIFS_MOUNT_SET_UID) { |
| 807 | direntry->d_inode->i_uid = |
| 808 | current->fsuid; |
| 809 | direntry->d_inode->i_gid = |
| 810 | current->fsgid; |
| 811 | } |
| 812 | } |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 813 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
| 815 | kfree(full_path); |
| 816 | FreeXid(xid); |
| 817 | return rc; |
| 818 | } |
| 819 | |
| 820 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 821 | { |
| 822 | int rc = 0; |
| 823 | int xid; |
| 824 | struct cifs_sb_info *cifs_sb; |
| 825 | struct cifsTconInfo *pTcon; |
| 826 | char *full_path = NULL; |
| 827 | struct cifsInodeInfo *cifsInode; |
| 828 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 829 | cFYI(1, ("cifs_rmdir, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | |
| 831 | xid = GetXid(); |
| 832 | |
| 833 | cifs_sb = CIFS_SB(inode->i_sb); |
| 834 | pTcon = cifs_sb->tcon; |
| 835 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 836 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | if (full_path == NULL) { |
| 838 | FreeXid(xid); |
| 839 | return -ENOMEM; |
| 840 | } |
| 841 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 842 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 843 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | |
| 845 | if (!rc) { |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 846 | drop_nlink(inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 847 | spin_lock(&direntry->d_inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | i_size_write(direntry->d_inode,0); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 849 | clear_nlink(direntry->d_inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 850 | spin_unlock(&direntry->d_inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | cifsInode = CIFS_I(direntry->d_inode); |
| 854 | cifsInode->time = 0; /* force revalidate to go get info when |
| 855 | needed */ |
| 856 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
| 857 | current_fs_time(inode->i_sb); |
| 858 | |
| 859 | kfree(full_path); |
| 860 | FreeXid(xid); |
| 861 | return rc; |
| 862 | } |
| 863 | |
| 864 | int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, |
| 865 | struct inode *target_inode, struct dentry *target_direntry) |
| 866 | { |
| 867 | char *fromName; |
| 868 | char *toName; |
| 869 | struct cifs_sb_info *cifs_sb_source; |
| 870 | struct cifs_sb_info *cifs_sb_target; |
| 871 | struct cifsTconInfo *pTcon; |
| 872 | int xid; |
| 873 | int rc = 0; |
| 874 | |
| 875 | xid = GetXid(); |
| 876 | |
| 877 | cifs_sb_target = CIFS_SB(target_inode->i_sb); |
| 878 | cifs_sb_source = CIFS_SB(source_inode->i_sb); |
| 879 | pTcon = cifs_sb_source->tcon; |
| 880 | |
| 881 | if (pTcon != cifs_sb_target->tcon) { |
| 882 | FreeXid(xid); |
| 883 | return -EXDEV; /* BB actually could be allowed if same server, |
| 884 | but different share. |
| 885 | Might eventually add support for this */ |
| 886 | } |
| 887 | |
| 888 | /* we already have the rename sem so we do not need to grab it again |
| 889 | here to protect the path integrity */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 890 | fromName = build_path_from_dentry(source_direntry); |
| 891 | toName = build_path_from_dentry(target_direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | if ((fromName == NULL) || (toName == NULL)) { |
| 893 | rc = -ENOMEM; |
| 894 | goto cifs_rename_exit; |
| 895 | } |
| 896 | |
| 897 | rc = CIFSSMBRename(xid, pTcon, fromName, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 898 | cifs_sb_source->local_nls, |
| 899 | cifs_sb_source->mnt_cifs_flags & |
| 900 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | if (rc == -EEXIST) { |
| 902 | /* check if they are the same file because rename of hardlinked |
| 903 | files is a noop */ |
| 904 | FILE_UNIX_BASIC_INFO *info_buf_source; |
| 905 | FILE_UNIX_BASIC_INFO *info_buf_target; |
| 906 | |
| 907 | info_buf_source = |
| 908 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
| 909 | if (info_buf_source != NULL) { |
| 910 | info_buf_target = info_buf_source + 1; |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 911 | if (pTcon->ses->capabilities & CAP_UNIX) |
| 912 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, |
| 913 | info_buf_source, |
| 914 | cifs_sb_source->local_nls, |
| 915 | cifs_sb_source->mnt_cifs_flags & |
| 916 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 917 | /* else rc is still EEXIST so will fall through to |
| 918 | unlink the target and retry rename */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | if (rc == 0) { |
| 920 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, |
| 921 | info_buf_target, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 922 | cifs_sb_target->local_nls, |
| 923 | /* remap based on source sb */ |
| 924 | cifs_sb_source->mnt_cifs_flags & |
| 925 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | if ((rc == 0) && |
| 928 | (info_buf_source->UniqueId == |
| 929 | info_buf_target->UniqueId)) { |
| 930 | /* do not rename since the files are hardlinked which |
| 931 | is a noop */ |
| 932 | } else { |
| 933 | /* we either can not tell the files are hardlinked |
| 934 | (as with Windows servers) or files are not |
| 935 | hardlinked so delete the target manually before |
| 936 | renaming to follow POSIX rather than Windows |
| 937 | semantics */ |
| 938 | cifs_unlink(target_inode, target_direntry); |
| 939 | rc = CIFSSMBRename(xid, pTcon, fromName, |
| 940 | toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 941 | cifs_sb_source->local_nls, |
| 942 | cifs_sb_source->mnt_cifs_flags |
| 943 | & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | } |
| 945 | kfree(info_buf_source); |
| 946 | } /* if we can not get memory just leave rc as EEXIST */ |
| 947 | } |
| 948 | |
| 949 | if (rc) { |
| 950 | cFYI(1, ("rename rc %d", rc)); |
| 951 | } |
| 952 | |
| 953 | if ((rc == -EIO) || (rc == -EEXIST)) { |
| 954 | int oplock = FALSE; |
| 955 | __u16 netfid; |
| 956 | |
| 957 | /* BB FIXME Is Generic Read correct for rename? */ |
| 958 | /* if renaming directory - we should not say CREATE_NOT_DIR, |
| 959 | need to test renaming open directory, also GENERIC_READ |
| 960 | might not right be right access to request */ |
| 961 | rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, |
| 962 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 963 | cifs_sb_source->local_nls, |
| 964 | cifs_sb_source->mnt_cifs_flags & |
| 965 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | if (rc==0) { |
Steve French | 8e87d4d | 2006-11-02 03:45:24 +0000 | [diff] [blame] | 967 | rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 968 | cifs_sb_source->local_nls, |
| 969 | cifs_sb_source->mnt_cifs_flags & |
| 970 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | CIFSSMBClose(xid, pTcon, netfid); |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | cifs_rename_exit: |
| 976 | kfree(fromName); |
| 977 | kfree(toName); |
| 978 | FreeXid(xid); |
| 979 | return rc; |
| 980 | } |
| 981 | |
| 982 | int cifs_revalidate(struct dentry *direntry) |
| 983 | { |
| 984 | int xid; |
| 985 | int rc = 0; |
| 986 | char *full_path; |
| 987 | struct cifs_sb_info *cifs_sb; |
| 988 | struct cifsInodeInfo *cifsInode; |
| 989 | loff_t local_size; |
| 990 | struct timespec local_mtime; |
| 991 | int invalidate_inode = FALSE; |
| 992 | |
| 993 | if (direntry->d_inode == NULL) |
| 994 | return -ENOENT; |
| 995 | |
| 996 | cifsInode = CIFS_I(direntry->d_inode); |
| 997 | |
| 998 | if (cifsInode == NULL) |
| 999 | return -ENOENT; |
| 1000 | |
| 1001 | /* no sense revalidating inode info on file that no one can write */ |
| 1002 | if (CIFS_I(direntry->d_inode)->clientCanCacheRead) |
| 1003 | return rc; |
| 1004 | |
| 1005 | xid = GetXid(); |
| 1006 | |
| 1007 | cifs_sb = CIFS_SB(direntry->d_sb); |
| 1008 | |
| 1009 | /* can not safely grab the rename sem here if rename calls revalidate |
| 1010 | since that would deadlock */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1011 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | if (full_path == NULL) { |
| 1013 | FreeXid(xid); |
| 1014 | return -ENOMEM; |
| 1015 | } |
| 1016 | cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " |
| 1017 | "jiffies %ld", full_path, direntry->d_inode, |
| 1018 | direntry->d_inode->i_count.counter, direntry, |
| 1019 | direntry->d_time, jiffies)); |
| 1020 | |
| 1021 | if (cifsInode->time == 0) { |
| 1022 | /* was set to zero previously to force revalidate */ |
| 1023 | } else if (time_before(jiffies, cifsInode->time + HZ) && |
| 1024 | lookupCacheEnabled) { |
| 1025 | if ((S_ISREG(direntry->d_inode->i_mode) == 0) || |
| 1026 | (direntry->d_inode->i_nlink == 1)) { |
| 1027 | kfree(full_path); |
| 1028 | FreeXid(xid); |
| 1029 | return rc; |
| 1030 | } else { |
| 1031 | cFYI(1, ("Have to revalidate file due to hardlinks")); |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | /* save mtime and size */ |
| 1036 | local_mtime = direntry->d_inode->i_mtime; |
| 1037 | local_size = direntry->d_inode->i_size; |
| 1038 | |
| 1039 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) { |
| 1040 | rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, |
| 1041 | direntry->d_sb,xid); |
| 1042 | if (rc) { |
| 1043 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1044 | /* if (rc != -ENOENT) |
| 1045 | rc = 0; */ /* BB should we cache info on |
| 1046 | certain errors? */ |
| 1047 | } |
| 1048 | } else { |
| 1049 | rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, |
| 1050 | direntry->d_sb,xid); |
| 1051 | if (rc) { |
| 1052 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1053 | /* if (rc != -ENOENT) |
| 1054 | rc = 0; */ /* BB should we cache info on |
| 1055 | certain errors? */ |
| 1056 | } |
| 1057 | } |
| 1058 | /* should we remap certain errors, access denied?, to zero */ |
| 1059 | |
| 1060 | /* if not oplocked, we invalidate inode pages if mtime or file size |
| 1061 | had changed on server */ |
| 1062 | |
| 1063 | if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) && |
| 1064 | (local_size == direntry->d_inode->i_size)) { |
| 1065 | cFYI(1, ("cifs_revalidate - inode unchanged")); |
| 1066 | } else { |
| 1067 | /* file may have changed on server */ |
| 1068 | if (cifsInode->clientCanCacheRead) { |
| 1069 | /* no need to invalidate inode pages since we were the |
| 1070 | only ones who could have modified the file and the |
| 1071 | server copy is staler than ours */ |
| 1072 | } else { |
| 1073 | invalidate_inode = TRUE; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | /* can not grab this sem since kernel filesys locking documentation |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1078 | indicates i_mutex may be taken by the kernel on lookup and rename |
| 1079 | which could deadlock if we grab the i_mutex here as well */ |
| 1080 | /* mutex_lock(&direntry->d_inode->i_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | /* need to write out dirty pages here */ |
| 1082 | if (direntry->d_inode->i_mapping) { |
| 1083 | /* do we need to lock inode until after invalidate completes |
| 1084 | below? */ |
| 1085 | filemap_fdatawrite(direntry->d_inode->i_mapping); |
| 1086 | } |
| 1087 | if (invalidate_inode) { |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1088 | /* shrink_dcache not necessary now that cifs dentry ops |
| 1089 | are exported for negative dentries */ |
| 1090 | /* if(S_ISDIR(direntry->d_inode->i_mode)) |
| 1091 | shrink_dcache_parent(direntry); */ |
| 1092 | if (S_ISREG(direntry->d_inode->i_mode)) { |
| 1093 | if (direntry->d_inode->i_mapping) |
| 1094 | filemap_fdatawait(direntry->d_inode->i_mapping); |
| 1095 | /* may eventually have to do this for open files too */ |
| 1096 | if (list_empty(&(cifsInode->openFileList))) { |
| 1097 | /* changed on server - flush read ahead pages */ |
| 1098 | cFYI(1, ("Invalidating read ahead data on " |
| 1099 | "closed file")); |
| 1100 | invalidate_remote_inode(direntry->d_inode); |
| 1101 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | } |
| 1103 | } |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1104 | /* mutex_unlock(&direntry->d_inode->i_mutex); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | |
| 1106 | kfree(full_path); |
| 1107 | FreeXid(xid); |
| 1108 | return rc; |
| 1109 | } |
| 1110 | |
| 1111 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 1112 | struct kstat *stat) |
| 1113 | { |
| 1114 | int err = cifs_revalidate(dentry); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1115 | if (!err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | generic_fillattr(dentry->d_inode, stat); |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1117 | stat->blksize = CIFS_MAX_MSGSIZE; |
| 1118 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | return err; |
| 1120 | } |
| 1121 | |
| 1122 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1123 | { |
| 1124 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1125 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1126 | struct page *page; |
| 1127 | char *kaddr; |
| 1128 | int rc = 0; |
| 1129 | |
| 1130 | page = grab_cache_page(mapping, index); |
| 1131 | if (!page) |
| 1132 | return -ENOMEM; |
| 1133 | |
| 1134 | kaddr = kmap_atomic(page, KM_USER0); |
| 1135 | memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); |
| 1136 | flush_dcache_page(page); |
| 1137 | kunmap_atomic(kaddr, KM_USER0); |
| 1138 | unlock_page(page); |
| 1139 | page_cache_release(page); |
| 1140 | return rc; |
| 1141 | } |
| 1142 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1143 | static int cifs_vmtruncate(struct inode * inode, loff_t offset) |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1144 | { |
| 1145 | struct address_space *mapping = inode->i_mapping; |
| 1146 | unsigned long limit; |
| 1147 | |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1148 | spin_lock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1149 | if (inode->i_size < offset) |
| 1150 | goto do_expand; |
| 1151 | /* |
| 1152 | * truncation of in-use swapfiles is disallowed - it would cause |
| 1153 | * subsequent swapout to scribble on the now-freed blocks. |
| 1154 | */ |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1155 | if (IS_SWAPFILE(inode)) { |
| 1156 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1157 | goto out_busy; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1158 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1159 | i_size_write(inode, offset); |
| 1160 | spin_unlock(&inode->i_lock); |
| 1161 | unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); |
| 1162 | truncate_inode_pages(mapping, offset); |
| 1163 | goto out_truncate; |
| 1164 | |
| 1165 | do_expand: |
| 1166 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1167 | if (limit != RLIM_INFINITY && offset > limit) { |
| 1168 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1169 | goto out_sig; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1170 | } |
| 1171 | if (offset > inode->i_sb->s_maxbytes) { |
| 1172 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1173 | goto out_big; |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1174 | } |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1175 | i_size_write(inode, offset); |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1176 | spin_unlock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1177 | out_truncate: |
| 1178 | if (inode->i_op && inode->i_op->truncate) |
| 1179 | inode->i_op->truncate(inode); |
| 1180 | return 0; |
| 1181 | out_sig: |
| 1182 | send_sig(SIGXFSZ, current, 0); |
| 1183 | out_big: |
| 1184 | return -EFBIG; |
| 1185 | out_busy: |
| 1186 | return -ETXTBSY; |
| 1187 | } |
| 1188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | int cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 1190 | { |
| 1191 | int xid; |
| 1192 | struct cifs_sb_info *cifs_sb; |
| 1193 | struct cifsTconInfo *pTcon; |
| 1194 | char *full_path = NULL; |
| 1195 | int rc = -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | struct cifsFileInfo *open_file = NULL; |
| 1197 | FILE_BASIC_INFO time_buf; |
| 1198 | int set_time = FALSE; |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1199 | int set_dosattr = FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | __u64 mode = 0xFFFFFFFFFFFFFFFFULL; |
| 1201 | __u64 uid = 0xFFFFFFFFFFFFFFFFULL; |
| 1202 | __u64 gid = 0xFFFFFFFFFFFFFFFFULL; |
| 1203 | struct cifsInodeInfo *cifsInode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
| 1205 | xid = GetXid(); |
| 1206 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1207 | cFYI(1, ("setattr on file %s attrs->iavalid 0x%x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | direntry->d_name.name, attrs->ia_valid)); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1209 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | cifs_sb = CIFS_SB(direntry->d_inode->i_sb); |
| 1211 | pTcon = cifs_sb->tcon; |
| 1212 | |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1213 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1214 | /* check if we have permission to change attrs */ |
| 1215 | rc = inode_change_ok(direntry->d_inode, attrs); |
| 1216 | if(rc < 0) { |
| 1217 | FreeXid(xid); |
| 1218 | return rc; |
| 1219 | } else |
| 1220 | rc = 0; |
| 1221 | } |
| 1222 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1223 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | if (full_path == NULL) { |
| 1225 | FreeXid(xid); |
| 1226 | return -ENOMEM; |
| 1227 | } |
| 1228 | cifsInode = CIFS_I(direntry->d_inode); |
| 1229 | |
| 1230 | /* BB check if we need to refresh inode from server now ? BB */ |
| 1231 | |
| 1232 | /* need to flush data before changing file size on server */ |
OGAWA Hirofumi | 28fd129 | 2006-01-08 01:02:14 -0800 | [diff] [blame] | 1233 | filemap_write_and_wait(direntry->d_inode->i_mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
| 1235 | if (attrs->ia_valid & ATTR_SIZE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | /* To avoid spurious oplock breaks from server, in the case of |
| 1237 | inodes that we already have open, avoid doing path based |
| 1238 | setting of file size if we can do it by handle. |
| 1239 | This keeps our caching token (oplock) and avoids timeouts |
| 1240 | when the local oplock break takes longer to flush |
| 1241 | writebehind data than the SMB timeout for the SetPathInfo |
| 1242 | request would allow */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1243 | |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1244 | open_file = find_writable_file(cifsInode); |
| 1245 | if (open_file) { |
| 1246 | __u16 nfid = open_file->netfid; |
| 1247 | __u32 npid = open_file->pid; |
| 1248 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, |
| 1249 | nfid, npid, FALSE); |
Steve French | 23e7dd7 | 2005-10-20 13:44:56 -0700 | [diff] [blame] | 1250 | atomic_dec(&open_file->wrtPending); |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1251 | cFYI(1,("SetFSize for attrs rc = %d", rc)); |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1252 | if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1253 | int bytes_written; |
| 1254 | rc = CIFSSMBWrite(xid, pTcon, |
| 1255 | nfid, 0, attrs->ia_size, |
| 1256 | &bytes_written, NULL, NULL, |
| 1257 | 1 /* 45 seconds */); |
| 1258 | cFYI(1,("Wrt seteof rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | } |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1260 | } else |
| 1261 | rc = -EINVAL; |
| 1262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | if (rc != 0) { |
| 1264 | /* Set file size by pathname rather than by handle |
| 1265 | either because no valid, writeable file handle for |
| 1266 | it was found or because there was an error setting |
| 1267 | it by handle */ |
| 1268 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, |
| 1269 | attrs->ia_size, FALSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1270 | cifs_sb->local_nls, |
| 1271 | cifs_sb->mnt_cifs_flags & |
| 1272 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1273 | cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1274 | if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1275 | __u16 netfid; |
| 1276 | int oplock = FALSE; |
| 1277 | |
| 1278 | rc = SMBLegacyOpen(xid, pTcon, full_path, |
| 1279 | FILE_OPEN, |
| 1280 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1281 | CREATE_NOT_DIR, &netfid, &oplock, |
| 1282 | NULL, cifs_sb->local_nls, |
| 1283 | cifs_sb->mnt_cifs_flags & |
| 1284 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1285 | if (rc==0) { |
| 1286 | int bytes_written; |
| 1287 | rc = CIFSSMBWrite(xid, pTcon, |
| 1288 | netfid, 0, |
| 1289 | attrs->ia_size, |
| 1290 | &bytes_written, NULL, |
| 1291 | NULL, 1 /* 45 sec */); |
| 1292 | cFYI(1,("wrt seteof rc %d",rc)); |
| 1293 | CIFSSMBClose(xid, pTcon, netfid); |
| 1294 | } |
| 1295 | |
| 1296 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | } |
| 1298 | |
| 1299 | /* Server is ok setting allocation size implicitly - no need |
| 1300 | to call: |
| 1301 | CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE, |
| 1302 | cifs_sb->local_nls); |
| 1303 | */ |
| 1304 | |
| 1305 | if (rc == 0) { |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1306 | rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | cifs_truncate_page(direntry->d_inode->i_mapping, |
| 1308 | direntry->d_inode->i_size); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1309 | } else |
| 1310 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | } |
| 1312 | if (attrs->ia_valid & ATTR_UID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1313 | cFYI(1, ("UID changed to %d", attrs->ia_uid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | uid = attrs->ia_uid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | } |
| 1316 | if (attrs->ia_valid & ATTR_GID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1317 | cFYI(1, ("GID changed to %d", attrs->ia_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | gid = attrs->ia_gid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | } |
| 1320 | |
| 1321 | time_buf.Attributes = 0; |
| 1322 | if (attrs->ia_valid & ATTR_MODE) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1323 | cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | mode = attrs->ia_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | } |
| 1326 | |
| 1327 | if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
| 1328 | && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) |
| 1329 | rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1330 | 0 /* dev_t */, cifs_sb->local_nls, |
| 1331 | cifs_sb->mnt_cifs_flags & |
| 1332 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | else if (attrs->ia_valid & ATTR_MODE) { |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 1334 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | if ((mode & S_IWUGO) == 0) /* not writeable */ { |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1336 | if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
| 1337 | set_dosattr = TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | time_buf.Attributes = |
| 1339 | cpu_to_le32(cifsInode->cifsAttrs | |
| 1340 | ATTR_READONLY); |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1341 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | } else if ((mode & S_IWUGO) == S_IWUGO) { |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1343 | if (cifsInode->cifsAttrs & ATTR_READONLY) { |
| 1344 | set_dosattr = TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | time_buf.Attributes = |
| 1346 | cpu_to_le32(cifsInode->cifsAttrs & |
| 1347 | (~ATTR_READONLY)); |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1348 | /* Windows ignores set to zero */ |
| 1349 | if(time_buf.Attributes == 0) |
| 1350 | time_buf.Attributes |= |
| 1351 | cpu_to_le32(ATTR_NORMAL); |
| 1352 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | } |
| 1354 | /* BB to be implemented - |
| 1355 | via Windows security descriptors or streams */ |
| 1356 | /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid, |
| 1357 | cifs_sb->local_nls); */ |
| 1358 | } |
| 1359 | |
| 1360 | if (attrs->ia_valid & ATTR_ATIME) { |
| 1361 | set_time = TRUE; |
| 1362 | time_buf.LastAccessTime = |
| 1363 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 1364 | } else |
| 1365 | time_buf.LastAccessTime = 0; |
| 1366 | |
| 1367 | if (attrs->ia_valid & ATTR_MTIME) { |
| 1368 | set_time = TRUE; |
| 1369 | time_buf.LastWriteTime = |
| 1370 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 1371 | } else |
| 1372 | time_buf.LastWriteTime = 0; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1373 | /* Do not set ctime explicitly unless other time |
| 1374 | stamps are changed explicitly (i.e. by utime() |
| 1375 | since we would then have a mix of client and |
| 1376 | server times */ |
| 1377 | |
| 1378 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | set_time = TRUE; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1380 | /* Although Samba throws this field away |
| 1381 | it may be useful to Windows - but we do |
| 1382 | not want to set ctime unless some other |
| 1383 | timestamp is changing */ |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1384 | cFYI(1, ("CIFS - CTIME changed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | time_buf.ChangeTime = |
| 1386 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 1387 | } else |
| 1388 | time_buf.ChangeTime = 0; |
| 1389 | |
Steve French | 066fcb0 | 2007-03-23 00:45:08 +0000 | [diff] [blame] | 1390 | if (set_time || set_dosattr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | time_buf.CreationTime = 0; /* do not change */ |
| 1392 | /* In the future we should experiment - try setting timestamps |
| 1393 | via Handle (SetFileInfo) instead of by path */ |
| 1394 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 1395 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1396 | cifs_sb->local_nls, |
| 1397 | cifs_sb->mnt_cifs_flags & |
| 1398 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | else |
| 1400 | rc = -EOPNOTSUPP; |
| 1401 | |
| 1402 | if (rc == -EOPNOTSUPP) { |
| 1403 | int oplock = FALSE; |
| 1404 | __u16 netfid; |
| 1405 | |
| 1406 | cFYI(1, ("calling SetFileInfo since SetPathInfo for " |
| 1407 | "times not supported by this server")); |
| 1408 | /* BB we could scan to see if we already have it open |
| 1409 | and pass in pid of opener to function */ |
| 1410 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
| 1411 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1412 | CREATE_NOT_DIR, &netfid, &oplock, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1413 | NULL, cifs_sb->local_nls, |
| 1414 | cifs_sb->mnt_cifs_flags & |
| 1415 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | if (rc==0) { |
| 1417 | rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf, |
| 1418 | netfid); |
| 1419 | CIFSSMBClose(xid, pTcon, netfid); |
| 1420 | } else { |
| 1421 | /* BB For even older servers we could convert time_buf |
| 1422 | into old DOS style which uses two second |
| 1423 | granularity */ |
| 1424 | |
| 1425 | /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, |
| 1426 | &time_buf, cifs_sb->local_nls); */ |
| 1427 | } |
| 1428 | } |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1429 | /* Even if error on time set, no sense failing the call if |
| 1430 | the server would set the time to a reasonable value anyway, |
| 1431 | and this check ensures that we are not being called from |
| 1432 | sys_utimes in which case we ought to fail the call back to |
| 1433 | the user when the server rejects the call */ |
Steve French | c14e894 | 2007-02-15 01:33:18 +0000 | [diff] [blame] | 1434 | if((rc) && (attrs->ia_valid & |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1435 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
| 1436 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | /* do not need local check to inode_check_ok since the server does |
| 1440 | that */ |
| 1441 | if (!rc) |
| 1442 | rc = inode_setattr(direntry->d_inode, attrs); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1443 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | kfree(full_path); |
| 1445 | FreeXid(xid); |
| 1446 | return rc; |
| 1447 | } |
| 1448 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1449 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | void cifs_delete_inode(struct inode *inode) |
| 1451 | { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1452 | cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | /* may have to add back in if and when safe distributed caching of |
| 1454 | directories added e.g. via FindNotify */ |
| 1455 | } |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 1456 | #endif |