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> |
| 22 | #include <linux/buffer_head.h> |
| 23 | #include <linux/stat.h> |
| 24 | #include <linux/pagemap.h> |
| 25 | #include <asm/div64.h> |
| 26 | #include "cifsfs.h" |
| 27 | #include "cifspdu.h" |
| 28 | #include "cifsglob.h" |
| 29 | #include "cifsproto.h" |
| 30 | #include "cifs_debug.h" |
| 31 | #include "cifs_fs_sb.h" |
| 32 | |
| 33 | int cifs_get_inode_info_unix(struct inode **pinode, |
| 34 | const unsigned char *search_path, struct super_block *sb, int xid) |
| 35 | { |
| 36 | int rc = 0; |
| 37 | FILE_UNIX_BASIC_INFO findData; |
| 38 | struct cifsTconInfo *pTcon; |
| 39 | struct inode *inode; |
| 40 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 41 | char *tmp_path; |
| 42 | |
| 43 | pTcon = cifs_sb->tcon; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 44 | cFYI(1, ("Getting info on %s", search_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* could have done a find first instead but this returns more info */ |
| 46 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 47 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 48 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* dump_mem("\nUnixQPathInfo return data", &findData, |
| 50 | sizeof(findData)); */ |
| 51 | if (rc) { |
| 52 | if (rc == -EREMOTE) { |
| 53 | tmp_path = |
| 54 | kmalloc(strnlen(pTcon->treeName, |
| 55 | MAX_TREE_SIZE + 1) + |
| 56 | strnlen(search_path, MAX_PATHCONF) + 1, |
| 57 | GFP_KERNEL); |
| 58 | if (tmp_path == NULL) { |
| 59 | return -ENOMEM; |
| 60 | } |
| 61 | /* have to skip first of the double backslash of |
| 62 | UNC name */ |
| 63 | strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE); |
| 64 | strncat(tmp_path, search_path, MAX_PATHCONF); |
| 65 | rc = connect_to_dfs_path(xid, pTcon->ses, |
| 66 | /* treename + */ tmp_path, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 67 | cifs_sb->local_nls, |
| 68 | cifs_sb->mnt_cifs_flags & |
| 69 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | kfree(tmp_path); |
| 71 | |
| 72 | /* BB fix up inode etc. */ |
| 73 | } else if (rc) { |
| 74 | return rc; |
| 75 | } |
| 76 | } else { |
| 77 | struct cifsInodeInfo *cifsInfo; |
| 78 | __u32 type = le32_to_cpu(findData.Type); |
| 79 | __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes); |
| 80 | __u64 end_of_file = le64_to_cpu(findData.EndOfFile); |
| 81 | |
| 82 | /* get new inode */ |
| 83 | if (*pinode == NULL) { |
| 84 | *pinode = new_inode(sb); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 85 | if (*pinode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | return -ENOMEM; |
| 87 | /* Is an i_ino of zero legal? */ |
| 88 | /* Are there sanity checks we can use to ensure that |
| 89 | the server is really filling in that field? */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 90 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | (*pinode)->i_ino = |
| 92 | (unsigned long)findData.UniqueId; |
| 93 | } /* note ino incremented to unique num in new_inode */ |
| 94 | insert_inode_hash(*pinode); |
| 95 | } |
| 96 | |
| 97 | inode = *pinode; |
| 98 | cifsInfo = CIFS_I(inode); |
| 99 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 100 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | cifsInfo->time = jiffies; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 102 | cFYI(1, ("New time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | /* this is ok to set on every inode revalidate */ |
| 104 | atomic_set(&cifsInfo->inUse,1); |
| 105 | |
| 106 | inode->i_atime = |
| 107 | cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime)); |
| 108 | inode->i_mtime = |
| 109 | cifs_NTtimeToUnix(le64_to_cpu |
| 110 | (findData.LastModificationTime)); |
| 111 | inode->i_ctime = |
| 112 | cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange)); |
| 113 | inode->i_mode = le64_to_cpu(findData.Permissions); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 114 | /* since we set the inode type below we need to mask off |
| 115 | to avoid strange results if bits set above */ |
| 116 | inode->i_mode &= ~S_IFMT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (type == UNIX_FILE) { |
| 118 | inode->i_mode |= S_IFREG; |
| 119 | } else if (type == UNIX_SYMLINK) { |
| 120 | inode->i_mode |= S_IFLNK; |
| 121 | } else if (type == UNIX_DIR) { |
| 122 | inode->i_mode |= S_IFDIR; |
| 123 | } else if (type == UNIX_CHARDEV) { |
| 124 | inode->i_mode |= S_IFCHR; |
| 125 | inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor), |
| 126 | le64_to_cpu(findData.DevMinor) & MINORMASK); |
| 127 | } else if (type == UNIX_BLOCKDEV) { |
| 128 | inode->i_mode |= S_IFBLK; |
| 129 | inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor), |
| 130 | le64_to_cpu(findData.DevMinor) & MINORMASK); |
| 131 | } else if (type == UNIX_FIFO) { |
| 132 | inode->i_mode |= S_IFIFO; |
| 133 | } else if (type == UNIX_SOCKET) { |
| 134 | inode->i_mode |= S_IFSOCK; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 135 | } else { |
| 136 | /* safest to call it a file if we do not know */ |
| 137 | inode->i_mode |= S_IFREG; |
| 138 | cFYI(1,("unknown type %d",type)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | } |
| 140 | inode->i_uid = le64_to_cpu(findData.Uid); |
| 141 | inode->i_gid = le64_to_cpu(findData.Gid); |
| 142 | inode->i_nlink = le64_to_cpu(findData.Nlinks); |
| 143 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 144 | if (is_size_safe_to_change(cifsInfo)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* can not safely change the file size here if the |
| 146 | client is writing to it due to potential races */ |
| 147 | |
| 148 | i_size_write(inode, end_of_file); |
| 149 | |
| 150 | /* blksize needs to be multiple of two. So safer to default to |
| 151 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 152 | will match rather than setting to: |
| 153 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 154 | |
| 155 | /* This seems incredibly stupid but it turns out that i_blocks |
| 156 | is not related to (i_size / i_blksize), instead 512 byte size |
| 157 | is required for calculating num blocks */ |
| 158 | |
| 159 | /* 512 bytes (2**9) is the fake blocksize that must be used */ |
| 160 | /* for this calculation */ |
| 161 | inode->i_blocks = (512 - 1 + num_of_bytes) >> 9; |
| 162 | } |
| 163 | |
| 164 | if (num_of_bytes < end_of_file) |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 165 | cFYI(1, ("allocation size less than end of file")); |
Andrew Morton | 5515eff | 2006-03-26 01:37:53 -0800 | [diff] [blame] | 166 | cFYI(1, ("Size %ld and blocks %llu", |
| 167 | (unsigned long) inode->i_size, |
| 168 | (unsigned long long)inode->i_blocks)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | if (S_ISREG(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 170 | cFYI(1, ("File inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | inode->i_op = &cifs_file_inode_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 172 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 173 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 174 | inode->i_fop = |
| 175 | &cifs_file_direct_nobrl_ops; |
| 176 | else |
| 177 | inode->i_fop = &cifs_file_direct_ops; |
| 178 | } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 179 | inode->i_fop = &cifs_file_nobrl_ops; |
| 180 | else /* not direct, send byte range locks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | inode->i_fop = &cifs_file_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 182 | |
Steve French | bfa0d75 | 2005-08-31 21:50:37 -0700 | [diff] [blame] | 183 | /* check if server can support readpages */ |
| 184 | if(pTcon->ses->server->maxBuf < |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 185 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 186 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 187 | else |
| 188 | inode->i_data.a_ops = &cifs_addr_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } else if (S_ISDIR(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 190 | cFYI(1, ("Directory inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | inode->i_op = &cifs_dir_inode_ops; |
| 192 | inode->i_fop = &cifs_dir_ops; |
| 193 | } else if (S_ISLNK(inode->i_mode)) { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 194 | cFYI(1, ("Symbolic Link inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | inode->i_op = &cifs_symlink_inode_ops; |
| 196 | /* tmp_inode->i_fop = */ /* do not need to set to anything */ |
| 197 | } else { |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 198 | cFYI(1, ("Init special inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | init_special_inode(inode, inode->i_mode, |
| 200 | inode->i_rdev); |
| 201 | } |
| 202 | } |
| 203 | return rc; |
| 204 | } |
| 205 | |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 206 | static int decode_sfu_inode(struct inode * inode, __u64 size, |
| 207 | const unsigned char *path, |
| 208 | struct cifs_sb_info *cifs_sb, int xid) |
| 209 | { |
| 210 | int rc; |
| 211 | int oplock = FALSE; |
| 212 | __u16 netfid; |
| 213 | struct cifsTconInfo *pTcon = cifs_sb->tcon; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 214 | char buf[24]; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 215 | unsigned int bytes_read; |
| 216 | char * pbuf; |
| 217 | |
| 218 | pbuf = buf; |
| 219 | |
| 220 | if(size == 0) { |
| 221 | inode->i_mode |= S_IFIFO; |
| 222 | return 0; |
| 223 | } else if (size < 8) { |
| 224 | return -EINVAL; /* EOPNOTSUPP? */ |
| 225 | } |
| 226 | |
| 227 | rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ, |
| 228 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 229 | cifs_sb->local_nls, |
| 230 | cifs_sb->mnt_cifs_flags & |
| 231 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 232 | if (rc==0) { |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 233 | int buf_type = CIFS_NO_BUFFER; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 234 | /* Read header */ |
| 235 | rc = CIFSSMBRead(xid, pTcon, |
| 236 | netfid, |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 237 | 24 /* length */, 0 /* offset */, |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 238 | &bytes_read, &pbuf, &buf_type); |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 239 | if((rc == 0) && (bytes_read >= 8)) { |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 240 | if(memcmp("IntxBLK", pbuf, 8) == 0) { |
| 241 | cFYI(1,("Block device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 242 | inode->i_mode |= S_IFBLK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 243 | if(bytes_read == 24) { |
| 244 | /* we have enough to decode dev num */ |
| 245 | __u64 mjr; /* major */ |
| 246 | __u64 mnr; /* minor */ |
| 247 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 248 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 249 | inode->i_rdev = MKDEV(mjr, mnr); |
| 250 | } |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 251 | } else if(memcmp("IntxCHR", pbuf, 8) == 0) { |
| 252 | cFYI(1,("Char device")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 253 | inode->i_mode |= S_IFCHR; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 254 | if(bytes_read == 24) { |
| 255 | /* we have enough to decode dev num */ |
| 256 | __u64 mjr; /* major */ |
| 257 | __u64 mnr; /* minor */ |
| 258 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 259 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 260 | inode->i_rdev = MKDEV(mjr, mnr); |
| 261 | } |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 262 | } else if(memcmp("IntxLNK", pbuf, 7) == 0) { |
| 263 | cFYI(1,("Symlink")); |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 264 | inode->i_mode |= S_IFLNK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 265 | } else { |
| 266 | inode->i_mode |= S_IFREG; /* file? */ |
| 267 | rc = -EOPNOTSUPP; |
| 268 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 269 | } else { |
| 270 | inode->i_mode |= S_IFREG; /* then it is a file */ |
| 271 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 272 | } |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 273 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 274 | } |
| 275 | return rc; |
| 276 | |
| 277 | } |
| 278 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 279 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
| 280 | |
| 281 | static int get_sfu_uid_mode(struct inode * inode, |
| 282 | const unsigned char *path, |
| 283 | struct cifs_sb_info *cifs_sb, int xid) |
| 284 | { |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 285 | #ifdef CONFIG_CIFS_XATTR |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 286 | ssize_t rc; |
| 287 | char ea_value[4]; |
| 288 | __u32 mode; |
| 289 | |
| 290 | rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS", |
| 291 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
| 292 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 293 | if(rc < 0) |
| 294 | return (int)rc; |
| 295 | else if (rc > 3) { |
| 296 | mode = le32_to_cpu(*((__le32 *)ea_value)); |
Steve French | c119b87 | 2005-11-18 12:27:27 -0800 | [diff] [blame] | 297 | inode->i_mode &= ~SFBITS_MASK; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 298 | 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] | 299 | inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode; |
| 300 | cFYI(1,("special mode bits 0%o", mode)); |
| 301 | return 0; |
| 302 | } else { |
| 303 | return 0; |
| 304 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 305 | #else |
| 306 | return -EOPNOTSUPP; |
| 307 | #endif |
| 308 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 309 | |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | int cifs_get_inode_info(struct inode **pinode, |
| 313 | const unsigned char *search_path, FILE_ALL_INFO *pfindData, |
| 314 | struct super_block *sb, int xid) |
| 315 | { |
| 316 | int rc = 0; |
| 317 | struct cifsTconInfo *pTcon; |
| 318 | struct inode *inode; |
| 319 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 320 | char *tmp_path; |
| 321 | char *buf = NULL; |
| 322 | |
| 323 | pTcon = cifs_sb->tcon; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 324 | cFYI(1,("Getting info on %s", search_path)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 326 | if ((pfindData == NULL) && (*pinode != NULL)) { |
| 327 | if (CIFS_I(*pinode)->clientCanCacheRead) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | cFYI(1,("No need to revalidate cached inode sizes")); |
| 329 | return rc; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | /* if file info not passed in then get it from server */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 334 | if (pfindData == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 336 | if (buf == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | return -ENOMEM; |
| 338 | pfindData = (FILE_ALL_INFO *)buf; |
| 339 | /* could do find first instead but this returns more info */ |
| 340 | rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData, |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame^] | 341 | 0 /* not legacy */, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 342 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 343 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 344 | /* BB optimize code so we do not make the above call |
| 345 | when server claims no NT SMB support and the above call |
| 346 | failed at least once - set flag in tcon or mount */ |
| 347 | if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
| 348 | rc = SMBQueryInformation(xid, pTcon, search_path, |
| 349 | pfindData, cifs_sb->local_nls, |
| 350 | cifs_sb->mnt_cifs_flags & |
| 351 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 352 | } |
| 353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ |
| 356 | if (rc) { |
| 357 | if (rc == -EREMOTE) { |
| 358 | tmp_path = |
| 359 | kmalloc(strnlen |
| 360 | (pTcon->treeName, |
| 361 | MAX_TREE_SIZE + 1) + |
| 362 | strnlen(search_path, MAX_PATHCONF) + 1, |
| 363 | GFP_KERNEL); |
| 364 | if (tmp_path == NULL) { |
| 365 | kfree(buf); |
| 366 | return -ENOMEM; |
| 367 | } |
| 368 | |
| 369 | strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE); |
| 370 | strncat(tmp_path, search_path, MAX_PATHCONF); |
| 371 | rc = connect_to_dfs_path(xid, pTcon->ses, |
| 372 | /* treename + */ tmp_path, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 373 | cifs_sb->local_nls, |
| 374 | cifs_sb->mnt_cifs_flags & |
| 375 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | kfree(tmp_path); |
| 377 | /* BB fix up inode etc. */ |
| 378 | } else if (rc) { |
| 379 | kfree(buf); |
| 380 | return rc; |
| 381 | } |
| 382 | } else { |
| 383 | struct cifsInodeInfo *cifsInfo; |
| 384 | __u32 attr = le32_to_cpu(pfindData->Attributes); |
| 385 | |
| 386 | /* get new inode */ |
| 387 | if (*pinode == NULL) { |
| 388 | *pinode = new_inode(sb); |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame^] | 389 | if (*pinode == NULL) { |
| 390 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | return -ENOMEM; |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame^] | 392 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | /* Is an i_ino of zero legal? Can we use that to check |
| 394 | if the server supports returning inode numbers? Are |
| 395 | there other sanity checks we can use to ensure that |
| 396 | the server is really filling in that field? */ |
| 397 | |
| 398 | /* We can not use the IndexNumber field by default from |
| 399 | Windows or Samba (in ALL_INFO buf) but we can request |
| 400 | it explicitly. It may not be unique presumably if |
| 401 | the server has multiple devices mounted under one |
| 402 | share */ |
| 403 | |
| 404 | /* There may be higher info levels that work but are |
| 405 | there Windows server or network appliances for which |
| 406 | IndexNumber field is not guaranteed unique? */ |
| 407 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 408 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | int rc1 = 0; |
| 410 | __u64 inode_num; |
| 411 | |
| 412 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, |
| 413 | search_path, &inode_num, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 414 | cifs_sb->local_nls, |
| 415 | cifs_sb->mnt_cifs_flags & |
| 416 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 417 | if (rc1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | cFYI(1,("GetSrvInodeNum rc %d", rc1)); |
| 419 | /* BB EOPNOSUPP disable SERVER_INUM? */ |
| 420 | } else /* do we need cast or hash to ino? */ |
| 421 | (*pinode)->i_ino = inode_num; |
| 422 | } /* else ino incremented to unique num in new_inode*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | insert_inode_hash(*pinode); |
| 424 | } |
| 425 | inode = *pinode; |
| 426 | cifsInfo = CIFS_I(inode); |
| 427 | cifsInfo->cifsAttrs = attr; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 428 | cFYI(1, ("Old time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | cifsInfo->time = jiffies; |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 430 | cFYI(1, ("New time %ld", cifsInfo->time)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* blksize needs to be multiple of two. So safer to default to |
| 433 | blksize and blkbits set in superblock so 2**blkbits and blksize |
| 434 | will match rather than setting to: |
| 435 | (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ |
| 436 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 437 | /* Linux can not store file creation time so ignore it */ |
Steve French | 1bd5bbc | 2006-09-28 03:35:57 +0000 | [diff] [blame] | 438 | if(pfindData->LastAccessTime) |
| 439 | inode->i_atime = cifs_NTtimeToUnix |
| 440 | (le64_to_cpu(pfindData->LastAccessTime)); |
| 441 | else /* do not need to use current_fs_time - time not stored */ |
| 442 | inode->i_atime = CURRENT_TIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | inode->i_mtime = |
| 444 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); |
| 445 | inode->i_ctime = |
| 446 | cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 447 | cFYI(0, ("Attributes came in as 0x%x", attr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | /* set default mode. will override for dirs below */ |
| 450 | if (atomic_read(&cifsInfo->inUse) == 0) |
| 451 | /* new inode, can safely set these fields */ |
| 452 | inode->i_mode = cifs_sb->mnt_file_mode; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 453 | else /* since we set the inode type below we need to mask off |
| 454 | to avoid strange results if type changes and both get orred in */ |
| 455 | inode->i_mode &= ~S_IFMT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | /* if (attr & ATTR_REPARSE) */ |
| 457 | /* We no longer handle these as symlinks because we could not |
| 458 | follow them due to the absolute path with drive letter */ |
| 459 | if (attr & ATTR_DIRECTORY) { |
| 460 | /* override default perms since we do not do byte range locking |
| 461 | on dirs */ |
| 462 | inode->i_mode = cifs_sb->mnt_dir_mode; |
| 463 | inode->i_mode |= S_IFDIR; |
Steve French | eda3c02 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 464 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 465 | (cifsInfo->cifsAttrs & ATTR_SYSTEM) && |
| 466 | /* No need to le64 convert size of zero */ |
| 467 | (pfindData->EndOfFile == 0)) { |
| 468 | inode->i_mode = cifs_sb->mnt_file_mode; |
| 469 | inode->i_mode |= S_IFIFO; |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 470 | /* BB Finish for SFU style symlinks and devices */ |
| 471 | } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && |
| 472 | (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { |
| 473 | if (decode_sfu_inode(inode, |
| 474 | le64_to_cpu(pfindData->EndOfFile), |
| 475 | search_path, |
| 476 | cifs_sb, xid)) { |
| 477 | cFYI(1,("Unrecognized sfu inode type")); |
| 478 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 479 | cFYI(1,("sfu mode 0%o",inode->i_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | } else { |
| 481 | inode->i_mode |= S_IFREG; |
| 482 | /* treat the dos attribute of read-only as read-only |
| 483 | mode e.g. 555 */ |
| 484 | if (cifsInfo->cifsAttrs & ATTR_READONLY) |
| 485 | inode->i_mode &= ~(S_IWUGO); |
| 486 | /* BB add code here - |
| 487 | validate if device or weird share or device type? */ |
| 488 | } |
| 489 | if (is_size_safe_to_change(cifsInfo)) { |
| 490 | /* can not safely change the file size here if the |
| 491 | client is writing to it due to potential races */ |
| 492 | i_size_write(inode,le64_to_cpu(pfindData->EndOfFile)); |
| 493 | |
| 494 | /* 512 bytes (2**9) is the fake blocksize that must be |
| 495 | used for this calculation */ |
| 496 | inode->i_blocks = (512 - 1 + le64_to_cpu( |
| 497 | pfindData->AllocationSize)) >> 9; |
| 498 | } |
| 499 | |
| 500 | inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); |
| 501 | |
| 502 | /* BB fill in uid and gid here? with help from winbind? |
| 503 | or retrieve from NTFS stream extended attribute */ |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 504 | if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 505 | /* fill in uid, gid, mode from server ACL */ |
| 506 | get_sfu_uid_mode(inode, search_path, cifs_sb, xid); |
| 507 | } else if (atomic_read(&cifsInfo->inUse) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | inode->i_uid = cifs_sb->mnt_uid; |
| 509 | inode->i_gid = cifs_sb->mnt_gid; |
| 510 | /* set so we do not keep refreshing these fields with |
| 511 | bad data after user has changed them in memory */ |
| 512 | atomic_set(&cifsInfo->inUse,1); |
| 513 | } |
| 514 | |
| 515 | if (S_ISREG(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 516 | cFYI(1, ("File inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | inode->i_op = &cifs_file_inode_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 518 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 519 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 520 | inode->i_fop = |
| 521 | &cifs_file_direct_nobrl_ops; |
| 522 | else |
| 523 | inode->i_fop = &cifs_file_direct_ops; |
| 524 | } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 525 | inode->i_fop = &cifs_file_nobrl_ops; |
| 526 | else /* not direct, send byte range locks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | inode->i_fop = &cifs_file_ops; |
Steve French | 8b94bcb | 2005-11-11 11:41:00 -0800 | [diff] [blame] | 528 | |
Steve French | bfa0d75 | 2005-08-31 21:50:37 -0700 | [diff] [blame] | 529 | if(pTcon->ses->server->maxBuf < |
Dave Kleikamp | 273d81d | 2006-06-01 19:41:23 +0000 | [diff] [blame] | 530 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 531 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 532 | else |
| 533 | inode->i_data.a_ops = &cifs_addr_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | } else if (S_ISDIR(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 535 | cFYI(1, ("Directory inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | inode->i_op = &cifs_dir_inode_ops; |
| 537 | inode->i_fop = &cifs_dir_ops; |
| 538 | } else if (S_ISLNK(inode->i_mode)) { |
Steve French | d6e2f2a | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 539 | cFYI(1, ("Symbolic Link inode")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | inode->i_op = &cifs_symlink_inode_ops; |
| 541 | } else { |
| 542 | init_special_inode(inode, inode->i_mode, |
| 543 | inode->i_rdev); |
| 544 | } |
| 545 | } |
| 546 | kfree(buf); |
| 547 | return rc; |
| 548 | } |
| 549 | |
| 550 | /* gets root inode */ |
| 551 | void cifs_read_inode(struct inode *inode) |
| 552 | { |
| 553 | int xid; |
| 554 | struct cifs_sb_info *cifs_sb; |
| 555 | |
| 556 | cifs_sb = CIFS_SB(inode->i_sb); |
| 557 | xid = GetXid(); |
| 558 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
| 559 | cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid); |
| 560 | else |
| 561 | cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid); |
| 562 | /* can not call macro FreeXid here since in a void func */ |
| 563 | _FreeXid(xid); |
| 564 | } |
| 565 | |
| 566 | int cifs_unlink(struct inode *inode, struct dentry *direntry) |
| 567 | { |
| 568 | int rc = 0; |
| 569 | int xid; |
| 570 | struct cifs_sb_info *cifs_sb; |
| 571 | struct cifsTconInfo *pTcon; |
| 572 | char *full_path = NULL; |
| 573 | struct cifsInodeInfo *cifsInode; |
| 574 | FILE_BASIC_INFO *pinfo_buf; |
| 575 | |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 576 | cFYI(1, ("cifs_unlink, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
| 578 | xid = GetXid(); |
| 579 | |
Steve French | 6910ab3 | 2006-03-31 03:37:08 +0000 | [diff] [blame] | 580 | if(inode) |
| 581 | cifs_sb = CIFS_SB(inode->i_sb); |
| 582 | else |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 583 | cifs_sb = CIFS_SB(direntry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | pTcon = cifs_sb->tcon; |
| 585 | |
| 586 | /* Unlink can be called from rename so we can not grab the sem here |
| 587 | since we deadlock otherwise */ |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 588 | /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 589 | full_path = build_path_from_dentry(direntry); |
Arjan van de Ven | a11f3a0 | 2006-03-23 03:00:33 -0800 | [diff] [blame] | 590 | /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | if (full_path == NULL) { |
| 592 | FreeXid(xid); |
| 593 | return -ENOMEM; |
| 594 | } |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 595 | rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, |
| 596 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 599 | if (direntry->d_inode) |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 600 | direntry->d_inode->i_nlink--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | } else if (rc == -ENOENT) { |
| 602 | d_drop(direntry); |
| 603 | } else if (rc == -ETXTBSY) { |
| 604 | int oplock = FALSE; |
| 605 | __u16 netfid; |
| 606 | |
| 607 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, |
| 608 | CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 609 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
| 610 | cifs_sb->mnt_cifs_flags & |
| 611 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | if (rc==0) { |
| 613 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 614 | cifs_sb->local_nls, |
| 615 | cifs_sb->mnt_cifs_flags & |
| 616 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 618 | if (direntry->d_inode) |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 619 | direntry->d_inode->i_nlink--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | } |
| 621 | } else if (rc == -EACCES) { |
| 622 | /* try only if r/o attribute set in local lookup data? */ |
Eric Sesterhenn | a048d7a | 2006-02-21 22:33:09 +0000 | [diff] [blame] | 623 | pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | if (pinfo_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* ATTRS set to normal clears r/o bit */ |
| 626 | pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); |
| 627 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 628 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, |
| 629 | pinfo_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 630 | cifs_sb->local_nls, |
| 631 | cifs_sb->mnt_cifs_flags & |
| 632 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | else |
| 634 | rc = -EOPNOTSUPP; |
| 635 | |
| 636 | if (rc == -EOPNOTSUPP) { |
| 637 | int oplock = FALSE; |
| 638 | __u16 netfid; |
| 639 | /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, |
| 640 | full_path, |
| 641 | (__u16)ATTR_NORMAL, |
| 642 | cifs_sb->local_nls); |
| 643 | For some strange reason it seems that NT4 eats the |
| 644 | old setattr call without actually setting the |
| 645 | attributes so on to the third attempted workaround |
| 646 | */ |
| 647 | |
| 648 | /* BB could scan to see if we already have it open |
| 649 | and pass in pid of opener to function */ |
| 650 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 651 | FILE_OPEN, SYNCHRONIZE | |
| 652 | FILE_WRITE_ATTRIBUTES, 0, |
| 653 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 654 | cifs_sb->local_nls, |
| 655 | cifs_sb->mnt_cifs_flags & |
| 656 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | if (rc==0) { |
| 658 | rc = CIFSSMBSetFileTimes(xid, pTcon, |
| 659 | pinfo_buf, |
| 660 | netfid); |
| 661 | CIFSSMBClose(xid, pTcon, netfid); |
| 662 | } |
| 663 | } |
| 664 | kfree(pinfo_buf); |
| 665 | } |
| 666 | if (rc==0) { |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 667 | rc = CIFSSMBDelFile(xid, pTcon, full_path, |
| 668 | cifs_sb->local_nls, |
| 669 | cifs_sb->mnt_cifs_flags & |
| 670 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | if (!rc) { |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 672 | if (direntry->d_inode) |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 673 | direntry->d_inode->i_nlink--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | } else if (rc == -ETXTBSY) { |
| 675 | int oplock = FALSE; |
| 676 | __u16 netfid; |
| 677 | |
| 678 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 679 | FILE_OPEN, DELETE, |
| 680 | CREATE_NOT_DIR | |
| 681 | CREATE_DELETE_ON_CLOSE, |
| 682 | &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 683 | cifs_sb->local_nls, |
| 684 | cifs_sb->mnt_cifs_flags & |
| 685 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | if (rc==0) { |
| 687 | CIFSSMBRenameOpenFile(xid, pTcon, |
| 688 | netfid, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 689 | cifs_sb->local_nls, |
| 690 | cifs_sb->mnt_cifs_flags & |
| 691 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | CIFSSMBClose(xid, pTcon, netfid); |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 693 | if (direntry->d_inode) |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 694 | direntry->d_inode->i_nlink--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | } |
| 696 | /* BB if rc = -ETXTBUSY goto the rename logic BB */ |
| 697 | } |
| 698 | } |
| 699 | } |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 700 | if (direntry->d_inode) { |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 701 | cifsInode = CIFS_I(direntry->d_inode); |
| 702 | cifsInode->time = 0; /* will force revalidate to get info |
| 703 | when needed */ |
| 704 | direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); |
| 705 | } |
Steve French | 06bcfed | 2006-03-31 22:43:50 +0000 | [diff] [blame] | 706 | if(inode) { |
| 707 | inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); |
| 708 | cifsInode = CIFS_I(inode); |
| 709 | cifsInode->time = 0; /* force revalidate of dir as well */ |
| 710 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | |
| 712 | kfree(full_path); |
| 713 | FreeXid(xid); |
| 714 | return rc; |
| 715 | } |
| 716 | |
| 717 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
| 718 | { |
| 719 | int rc = 0; |
| 720 | int xid; |
| 721 | struct cifs_sb_info *cifs_sb; |
| 722 | struct cifsTconInfo *pTcon; |
| 723 | char *full_path = NULL; |
| 724 | struct inode *newinode = NULL; |
| 725 | |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 726 | 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] | 727 | |
| 728 | xid = GetXid(); |
| 729 | |
| 730 | cifs_sb = CIFS_SB(inode->i_sb); |
| 731 | pTcon = cifs_sb->tcon; |
| 732 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 733 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | if (full_path == NULL) { |
| 735 | FreeXid(xid); |
| 736 | return -ENOMEM; |
| 737 | } |
| 738 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 739 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 740 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | if (rc) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 742 | cFYI(1, ("cifs_mkdir returned 0x%x", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | d_drop(direntry); |
| 744 | } else { |
| 745 | inode->i_nlink++; |
| 746 | if (pTcon->ses->capabilities & CAP_UNIX) |
| 747 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
| 748 | inode->i_sb,xid); |
| 749 | else |
| 750 | rc = cifs_get_inode_info(&newinode, full_path, NULL, |
| 751 | inode->i_sb,xid); |
| 752 | |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 753 | if (pTcon->nocase) |
| 754 | direntry->d_op = &cifs_ci_dentry_ops; |
| 755 | else |
| 756 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | d_instantiate(direntry, newinode); |
| 758 | if (direntry->d_inode) |
| 759 | direntry->d_inode->i_nlink = 2; |
| 760 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 761 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 763 | mode, |
Steve French | 8345187 | 2005-12-01 17:12:59 -0800 | [diff] [blame] | 764 | (__u64)current->fsuid, |
| 765 | (__u64)current->fsgid, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 767 | cifs_sb->local_nls, |
| 768 | cifs_sb->mnt_cifs_flags & |
| 769 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | } else { |
| 771 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
| 772 | mode, (__u64)-1, |
| 773 | (__u64)-1, 0 /* dev_t */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 774 | cifs_sb->local_nls, |
| 775 | cifs_sb->mnt_cifs_flags & |
| 776 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
| 778 | else { |
| 779 | /* BB to be implemented via Windows secrty descriptors |
| 780 | eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, |
| 781 | -1, -1, local_nls); */ |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 782 | if(direntry->d_inode) { |
| 783 | direntry->d_inode->i_mode = mode; |
Steve French | 25741b3 | 2005-11-29 22:38:43 -0800 | [diff] [blame] | 784 | direntry->d_inode->i_mode |= S_IFDIR; |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 785 | if(cifs_sb->mnt_cifs_flags & |
| 786 | CIFS_MOUNT_SET_UID) { |
| 787 | direntry->d_inode->i_uid = |
| 788 | current->fsuid; |
| 789 | direntry->d_inode->i_gid = |
| 790 | current->fsgid; |
| 791 | } |
| 792 | } |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 793 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | } |
| 795 | kfree(full_path); |
| 796 | FreeXid(xid); |
| 797 | return rc; |
| 798 | } |
| 799 | |
| 800 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 801 | { |
| 802 | int rc = 0; |
| 803 | int xid; |
| 804 | struct cifs_sb_info *cifs_sb; |
| 805 | struct cifsTconInfo *pTcon; |
| 806 | char *full_path = NULL; |
| 807 | struct cifsInodeInfo *cifsInode; |
| 808 | |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 809 | cFYI(1, ("cifs_rmdir, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
| 811 | xid = GetXid(); |
| 812 | |
| 813 | cifs_sb = CIFS_SB(inode->i_sb); |
| 814 | pTcon = cifs_sb->tcon; |
| 815 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 816 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | if (full_path == NULL) { |
| 818 | FreeXid(xid); |
| 819 | return -ENOMEM; |
| 820 | } |
| 821 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 822 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 823 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
| 825 | if (!rc) { |
| 826 | inode->i_nlink--; |
| 827 | i_size_write(direntry->d_inode,0); |
| 828 | direntry->d_inode->i_nlink = 0; |
| 829 | } |
| 830 | |
| 831 | cifsInode = CIFS_I(direntry->d_inode); |
| 832 | cifsInode->time = 0; /* force revalidate to go get info when |
| 833 | needed */ |
| 834 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
| 835 | current_fs_time(inode->i_sb); |
| 836 | |
| 837 | kfree(full_path); |
| 838 | FreeXid(xid); |
| 839 | return rc; |
| 840 | } |
| 841 | |
| 842 | int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, |
| 843 | struct inode *target_inode, struct dentry *target_direntry) |
| 844 | { |
| 845 | char *fromName; |
| 846 | char *toName; |
| 847 | struct cifs_sb_info *cifs_sb_source; |
| 848 | struct cifs_sb_info *cifs_sb_target; |
| 849 | struct cifsTconInfo *pTcon; |
| 850 | int xid; |
| 851 | int rc = 0; |
| 852 | |
| 853 | xid = GetXid(); |
| 854 | |
| 855 | cifs_sb_target = CIFS_SB(target_inode->i_sb); |
| 856 | cifs_sb_source = CIFS_SB(source_inode->i_sb); |
| 857 | pTcon = cifs_sb_source->tcon; |
| 858 | |
| 859 | if (pTcon != cifs_sb_target->tcon) { |
| 860 | FreeXid(xid); |
| 861 | return -EXDEV; /* BB actually could be allowed if same server, |
| 862 | but different share. |
| 863 | Might eventually add support for this */ |
| 864 | } |
| 865 | |
| 866 | /* we already have the rename sem so we do not need to grab it again |
| 867 | here to protect the path integrity */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 868 | fromName = build_path_from_dentry(source_direntry); |
| 869 | toName = build_path_from_dentry(target_direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | if ((fromName == NULL) || (toName == NULL)) { |
| 871 | rc = -ENOMEM; |
| 872 | goto cifs_rename_exit; |
| 873 | } |
| 874 | |
| 875 | rc = CIFSSMBRename(xid, pTcon, fromName, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 876 | cifs_sb_source->local_nls, |
| 877 | cifs_sb_source->mnt_cifs_flags & |
| 878 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | if (rc == -EEXIST) { |
| 880 | /* check if they are the same file because rename of hardlinked |
| 881 | files is a noop */ |
| 882 | FILE_UNIX_BASIC_INFO *info_buf_source; |
| 883 | FILE_UNIX_BASIC_INFO *info_buf_target; |
| 884 | |
| 885 | info_buf_source = |
| 886 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
| 887 | if (info_buf_source != NULL) { |
| 888 | info_buf_target = info_buf_source + 1; |
| 889 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 890 | info_buf_source, cifs_sb_source->local_nls, |
| 891 | cifs_sb_source->mnt_cifs_flags & |
| 892 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | if (rc == 0) { |
| 894 | rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, |
| 895 | info_buf_target, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 896 | cifs_sb_target->local_nls, |
| 897 | /* remap based on source sb */ |
| 898 | cifs_sb_source->mnt_cifs_flags & |
| 899 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | } |
| 901 | if ((rc == 0) && |
| 902 | (info_buf_source->UniqueId == |
| 903 | info_buf_target->UniqueId)) { |
| 904 | /* do not rename since the files are hardlinked which |
| 905 | is a noop */ |
| 906 | } else { |
| 907 | /* we either can not tell the files are hardlinked |
| 908 | (as with Windows servers) or files are not |
| 909 | hardlinked so delete the target manually before |
| 910 | renaming to follow POSIX rather than Windows |
| 911 | semantics */ |
| 912 | cifs_unlink(target_inode, target_direntry); |
| 913 | rc = CIFSSMBRename(xid, pTcon, fromName, |
| 914 | toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 915 | cifs_sb_source->local_nls, |
| 916 | cifs_sb_source->mnt_cifs_flags |
| 917 | & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | } |
| 919 | kfree(info_buf_source); |
| 920 | } /* if we can not get memory just leave rc as EEXIST */ |
| 921 | } |
| 922 | |
| 923 | if (rc) { |
| 924 | cFYI(1, ("rename rc %d", rc)); |
| 925 | } |
| 926 | |
| 927 | if ((rc == -EIO) || (rc == -EEXIST)) { |
| 928 | int oplock = FALSE; |
| 929 | __u16 netfid; |
| 930 | |
| 931 | /* BB FIXME Is Generic Read correct for rename? */ |
| 932 | /* if renaming directory - we should not say CREATE_NOT_DIR, |
| 933 | need to test renaming open directory, also GENERIC_READ |
| 934 | might not right be right access to request */ |
| 935 | rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, |
| 936 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 937 | cifs_sb_source->local_nls, |
| 938 | cifs_sb_source->mnt_cifs_flags & |
| 939 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | if (rc==0) { |
| 941 | CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 942 | cifs_sb_source->local_nls, |
| 943 | cifs_sb_source->mnt_cifs_flags & |
| 944 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | CIFSSMBClose(xid, pTcon, netfid); |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | cifs_rename_exit: |
| 950 | kfree(fromName); |
| 951 | kfree(toName); |
| 952 | FreeXid(xid); |
| 953 | return rc; |
| 954 | } |
| 955 | |
| 956 | int cifs_revalidate(struct dentry *direntry) |
| 957 | { |
| 958 | int xid; |
| 959 | int rc = 0; |
| 960 | char *full_path; |
| 961 | struct cifs_sb_info *cifs_sb; |
| 962 | struct cifsInodeInfo *cifsInode; |
| 963 | loff_t local_size; |
| 964 | struct timespec local_mtime; |
| 965 | int invalidate_inode = FALSE; |
| 966 | |
| 967 | if (direntry->d_inode == NULL) |
| 968 | return -ENOENT; |
| 969 | |
| 970 | cifsInode = CIFS_I(direntry->d_inode); |
| 971 | |
| 972 | if (cifsInode == NULL) |
| 973 | return -ENOENT; |
| 974 | |
| 975 | /* no sense revalidating inode info on file that no one can write */ |
| 976 | if (CIFS_I(direntry->d_inode)->clientCanCacheRead) |
| 977 | return rc; |
| 978 | |
| 979 | xid = GetXid(); |
| 980 | |
| 981 | cifs_sb = CIFS_SB(direntry->d_sb); |
| 982 | |
| 983 | /* can not safely grab the rename sem here if rename calls revalidate |
| 984 | since that would deadlock */ |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 985 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | if (full_path == NULL) { |
| 987 | FreeXid(xid); |
| 988 | return -ENOMEM; |
| 989 | } |
| 990 | cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " |
| 991 | "jiffies %ld", full_path, direntry->d_inode, |
| 992 | direntry->d_inode->i_count.counter, direntry, |
| 993 | direntry->d_time, jiffies)); |
| 994 | |
| 995 | if (cifsInode->time == 0) { |
| 996 | /* was set to zero previously to force revalidate */ |
| 997 | } else if (time_before(jiffies, cifsInode->time + HZ) && |
| 998 | lookupCacheEnabled) { |
| 999 | if ((S_ISREG(direntry->d_inode->i_mode) == 0) || |
| 1000 | (direntry->d_inode->i_nlink == 1)) { |
| 1001 | kfree(full_path); |
| 1002 | FreeXid(xid); |
| 1003 | return rc; |
| 1004 | } else { |
| 1005 | cFYI(1, ("Have to revalidate file due to hardlinks")); |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | /* save mtime and size */ |
| 1010 | local_mtime = direntry->d_inode->i_mtime; |
| 1011 | local_size = direntry->d_inode->i_size; |
| 1012 | |
| 1013 | if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) { |
| 1014 | rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, |
| 1015 | direntry->d_sb,xid); |
| 1016 | if (rc) { |
| 1017 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1018 | /* if (rc != -ENOENT) |
| 1019 | rc = 0; */ /* BB should we cache info on |
| 1020 | certain errors? */ |
| 1021 | } |
| 1022 | } else { |
| 1023 | rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, |
| 1024 | direntry->d_sb,xid); |
| 1025 | if (rc) { |
| 1026 | cFYI(1, ("error on getting revalidate info %d", rc)); |
| 1027 | /* if (rc != -ENOENT) |
| 1028 | rc = 0; */ /* BB should we cache info on |
| 1029 | certain errors? */ |
| 1030 | } |
| 1031 | } |
| 1032 | /* should we remap certain errors, access denied?, to zero */ |
| 1033 | |
| 1034 | /* if not oplocked, we invalidate inode pages if mtime or file size |
| 1035 | had changed on server */ |
| 1036 | |
| 1037 | if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) && |
| 1038 | (local_size == direntry->d_inode->i_size)) { |
| 1039 | cFYI(1, ("cifs_revalidate - inode unchanged")); |
| 1040 | } else { |
| 1041 | /* file may have changed on server */ |
| 1042 | if (cifsInode->clientCanCacheRead) { |
| 1043 | /* no need to invalidate inode pages since we were the |
| 1044 | only ones who could have modified the file and the |
| 1045 | server copy is staler than ours */ |
| 1046 | } else { |
| 1047 | invalidate_inode = TRUE; |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | /* can not grab this sem since kernel filesys locking documentation |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1052 | indicates i_mutex may be taken by the kernel on lookup and rename |
| 1053 | which could deadlock if we grab the i_mutex here as well */ |
| 1054 | /* mutex_lock(&direntry->d_inode->i_mutex);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | /* need to write out dirty pages here */ |
| 1056 | if (direntry->d_inode->i_mapping) { |
| 1057 | /* do we need to lock inode until after invalidate completes |
| 1058 | below? */ |
| 1059 | filemap_fdatawrite(direntry->d_inode->i_mapping); |
| 1060 | } |
| 1061 | if (invalidate_inode) { |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 1062 | /* shrink_dcache not necessary now that cifs dentry ops |
| 1063 | are exported for negative dentries */ |
| 1064 | /* if(S_ISDIR(direntry->d_inode->i_mode)) |
| 1065 | shrink_dcache_parent(direntry); */ |
| 1066 | if (S_ISREG(direntry->d_inode->i_mode)) { |
| 1067 | if (direntry->d_inode->i_mapping) |
| 1068 | filemap_fdatawait(direntry->d_inode->i_mapping); |
| 1069 | /* may eventually have to do this for open files too */ |
| 1070 | if (list_empty(&(cifsInode->openFileList))) { |
| 1071 | /* changed on server - flush read ahead pages */ |
| 1072 | cFYI(1, ("Invalidating read ahead data on " |
| 1073 | "closed file")); |
| 1074 | invalidate_remote_inode(direntry->d_inode); |
| 1075 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | } |
| 1077 | } |
Jes Sorensen | 1b1dcc1 | 2006-01-09 15:59:24 -0800 | [diff] [blame] | 1078 | /* mutex_unlock(&direntry->d_inode->i_mutex); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
| 1080 | kfree(full_path); |
| 1081 | FreeXid(xid); |
| 1082 | return rc; |
| 1083 | } |
| 1084 | |
| 1085 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 1086 | struct kstat *stat) |
| 1087 | { |
| 1088 | int err = cifs_revalidate(dentry); |
| 1089 | if (!err) |
| 1090 | generic_fillattr(dentry->d_inode, stat); |
| 1091 | return err; |
| 1092 | } |
| 1093 | |
| 1094 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1095 | { |
| 1096 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1097 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1098 | struct page *page; |
| 1099 | char *kaddr; |
| 1100 | int rc = 0; |
| 1101 | |
| 1102 | page = grab_cache_page(mapping, index); |
| 1103 | if (!page) |
| 1104 | return -ENOMEM; |
| 1105 | |
| 1106 | kaddr = kmap_atomic(page, KM_USER0); |
| 1107 | memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); |
| 1108 | flush_dcache_page(page); |
| 1109 | kunmap_atomic(kaddr, KM_USER0); |
| 1110 | unlock_page(page); |
| 1111 | page_cache_release(page); |
| 1112 | return rc; |
| 1113 | } |
| 1114 | |
| 1115 | int cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 1116 | { |
| 1117 | int xid; |
| 1118 | struct cifs_sb_info *cifs_sb; |
| 1119 | struct cifsTconInfo *pTcon; |
| 1120 | char *full_path = NULL; |
| 1121 | int rc = -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | struct cifsFileInfo *open_file = NULL; |
| 1123 | FILE_BASIC_INFO time_buf; |
| 1124 | int set_time = FALSE; |
| 1125 | __u64 mode = 0xFFFFFFFFFFFFFFFFULL; |
| 1126 | __u64 uid = 0xFFFFFFFFFFFFFFFFULL; |
| 1127 | __u64 gid = 0xFFFFFFFFFFFFFFFFULL; |
| 1128 | struct cifsInodeInfo *cifsInode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
| 1130 | xid = GetXid(); |
| 1131 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1132 | cFYI(1, ("setattr on file %s attrs->iavalid 0x%x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | direntry->d_name.name, attrs->ia_valid)); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | cifs_sb = CIFS_SB(direntry->d_inode->i_sb); |
| 1136 | pTcon = cifs_sb->tcon; |
| 1137 | |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1138 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1139 | /* check if we have permission to change attrs */ |
| 1140 | rc = inode_change_ok(direntry->d_inode, attrs); |
| 1141 | if(rc < 0) { |
| 1142 | FreeXid(xid); |
| 1143 | return rc; |
| 1144 | } else |
| 1145 | rc = 0; |
| 1146 | } |
| 1147 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1148 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | if (full_path == NULL) { |
| 1150 | FreeXid(xid); |
| 1151 | return -ENOMEM; |
| 1152 | } |
| 1153 | cifsInode = CIFS_I(direntry->d_inode); |
| 1154 | |
| 1155 | /* BB check if we need to refresh inode from server now ? BB */ |
| 1156 | |
| 1157 | /* need to flush data before changing file size on server */ |
OGAWA Hirofumi | 28fd129 | 2006-01-08 01:02:14 -0800 | [diff] [blame] | 1158 | filemap_write_and_wait(direntry->d_inode->i_mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | |
| 1160 | if (attrs->ia_valid & ATTR_SIZE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | /* To avoid spurious oplock breaks from server, in the case of |
| 1162 | inodes that we already have open, avoid doing path based |
| 1163 | setting of file size if we can do it by handle. |
| 1164 | This keeps our caching token (oplock) and avoids timeouts |
| 1165 | when the local oplock break takes longer to flush |
| 1166 | writebehind data than the SMB timeout for the SetPathInfo |
| 1167 | request would allow */ |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 1168 | |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1169 | open_file = find_writable_file(cifsInode); |
| 1170 | if (open_file) { |
| 1171 | __u16 nfid = open_file->netfid; |
| 1172 | __u32 npid = open_file->pid; |
| 1173 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, |
| 1174 | nfid, npid, FALSE); |
Steve French | 23e7dd7 | 2005-10-20 13:44:56 -0700 | [diff] [blame] | 1175 | atomic_dec(&open_file->wrtPending); |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1176 | cFYI(1,("SetFSize for attrs rc = %d", rc)); |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1177 | if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | 6148a74 | 2005-10-05 12:23:19 -0700 | [diff] [blame] | 1178 | int bytes_written; |
| 1179 | rc = CIFSSMBWrite(xid, pTcon, |
| 1180 | nfid, 0, attrs->ia_size, |
| 1181 | &bytes_written, NULL, NULL, |
| 1182 | 1 /* 45 seconds */); |
| 1183 | cFYI(1,("Wrt seteof rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | } |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1185 | } else |
| 1186 | rc = -EINVAL; |
| 1187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | if (rc != 0) { |
| 1189 | /* Set file size by pathname rather than by handle |
| 1190 | either because no valid, writeable file handle for |
| 1191 | it was found or because there was an error setting |
| 1192 | it by handle */ |
| 1193 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, |
| 1194 | attrs->ia_size, FALSE, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1195 | cifs_sb->local_nls, |
| 1196 | cifs_sb->mnt_cifs_flags & |
| 1197 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1198 | cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); |
Steve French | 083d3a2 | 2006-03-03 09:53:36 +0000 | [diff] [blame] | 1199 | if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1200 | __u16 netfid; |
| 1201 | int oplock = FALSE; |
| 1202 | |
| 1203 | rc = SMBLegacyOpen(xid, pTcon, full_path, |
| 1204 | FILE_OPEN, |
| 1205 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1206 | CREATE_NOT_DIR, &netfid, &oplock, |
| 1207 | NULL, cifs_sb->local_nls, |
| 1208 | cifs_sb->mnt_cifs_flags & |
| 1209 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1210 | if (rc==0) { |
| 1211 | int bytes_written; |
| 1212 | rc = CIFSSMBWrite(xid, pTcon, |
| 1213 | netfid, 0, |
| 1214 | attrs->ia_size, |
| 1215 | &bytes_written, NULL, |
| 1216 | NULL, 1 /* 45 sec */); |
| 1217 | cFYI(1,("wrt seteof rc %d",rc)); |
| 1218 | CIFSSMBClose(xid, pTcon, netfid); |
| 1219 | } |
| 1220 | |
| 1221 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | } |
| 1223 | |
| 1224 | /* Server is ok setting allocation size implicitly - no need |
| 1225 | to call: |
| 1226 | CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE, |
| 1227 | cifs_sb->local_nls); |
| 1228 | */ |
| 1229 | |
| 1230 | if (rc == 0) { |
| 1231 | rc = vmtruncate(direntry->d_inode, attrs->ia_size); |
| 1232 | cifs_truncate_page(direntry->d_inode->i_mapping, |
| 1233 | direntry->d_inode->i_size); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1234 | } else |
| 1235 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } |
| 1237 | if (attrs->ia_valid & ATTR_UID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1238 | cFYI(1, ("UID changed to %d", attrs->ia_uid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | uid = attrs->ia_uid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | } |
| 1241 | if (attrs->ia_valid & ATTR_GID) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1242 | cFYI(1, ("GID changed to %d", attrs->ia_gid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | gid = attrs->ia_gid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | time_buf.Attributes = 0; |
| 1247 | if (attrs->ia_valid & ATTR_MODE) { |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1248 | cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | mode = attrs->ia_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX) |
| 1253 | && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) |
| 1254 | rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1255 | 0 /* dev_t */, cifs_sb->local_nls, |
| 1256 | cifs_sb->mnt_cifs_flags & |
| 1257 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | else if (attrs->ia_valid & ATTR_MODE) { |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 1259 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | if ((mode & S_IWUGO) == 0) /* not writeable */ { |
| 1261 | if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) |
| 1262 | time_buf.Attributes = |
| 1263 | cpu_to_le32(cifsInode->cifsAttrs | |
| 1264 | ATTR_READONLY); |
| 1265 | } else if ((mode & S_IWUGO) == S_IWUGO) { |
| 1266 | if (cifsInode->cifsAttrs & ATTR_READONLY) |
| 1267 | time_buf.Attributes = |
| 1268 | cpu_to_le32(cifsInode->cifsAttrs & |
| 1269 | (~ATTR_READONLY)); |
| 1270 | } |
| 1271 | /* BB to be implemented - |
| 1272 | via Windows security descriptors or streams */ |
| 1273 | /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid, |
| 1274 | cifs_sb->local_nls); */ |
| 1275 | } |
| 1276 | |
| 1277 | if (attrs->ia_valid & ATTR_ATIME) { |
| 1278 | set_time = TRUE; |
| 1279 | time_buf.LastAccessTime = |
| 1280 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 1281 | } else |
| 1282 | time_buf.LastAccessTime = 0; |
| 1283 | |
| 1284 | if (attrs->ia_valid & ATTR_MTIME) { |
| 1285 | set_time = TRUE; |
| 1286 | time_buf.LastWriteTime = |
| 1287 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 1288 | } else |
| 1289 | time_buf.LastWriteTime = 0; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1290 | /* Do not set ctime explicitly unless other time |
| 1291 | stamps are changed explicitly (i.e. by utime() |
| 1292 | since we would then have a mix of client and |
| 1293 | server times */ |
| 1294 | |
| 1295 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | set_time = TRUE; |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1297 | /* Although Samba throws this field away |
| 1298 | it may be useful to Windows - but we do |
| 1299 | not want to set ctime unless some other |
| 1300 | timestamp is changing */ |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1301 | cFYI(1, ("CIFS - CTIME changed")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | time_buf.ChangeTime = |
| 1303 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 1304 | } else |
| 1305 | time_buf.ChangeTime = 0; |
| 1306 | |
| 1307 | if (set_time || time_buf.Attributes) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | time_buf.CreationTime = 0; /* do not change */ |
| 1309 | /* In the future we should experiment - try setting timestamps |
| 1310 | via Handle (SetFileInfo) instead of by path */ |
| 1311 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) |
| 1312 | rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1313 | cifs_sb->local_nls, |
| 1314 | cifs_sb->mnt_cifs_flags & |
| 1315 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | else |
| 1317 | rc = -EOPNOTSUPP; |
| 1318 | |
| 1319 | if (rc == -EOPNOTSUPP) { |
| 1320 | int oplock = FALSE; |
| 1321 | __u16 netfid; |
| 1322 | |
| 1323 | cFYI(1, ("calling SetFileInfo since SetPathInfo for " |
| 1324 | "times not supported by this server")); |
| 1325 | /* BB we could scan to see if we already have it open |
| 1326 | and pass in pid of opener to function */ |
| 1327 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
| 1328 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1329 | CREATE_NOT_DIR, &netfid, &oplock, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1330 | NULL, 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 | if (rc==0) { |
| 1334 | rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf, |
| 1335 | netfid); |
| 1336 | CIFSSMBClose(xid, pTcon, netfid); |
| 1337 | } else { |
| 1338 | /* BB For even older servers we could convert time_buf |
| 1339 | into old DOS style which uses two second |
| 1340 | granularity */ |
| 1341 | |
| 1342 | /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, |
| 1343 | &time_buf, cifs_sb->local_nls); */ |
| 1344 | } |
| 1345 | } |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1346 | /* Even if error on time set, no sense failing the call if |
| 1347 | the server would set the time to a reasonable value anyway, |
| 1348 | and this check ensures that we are not being called from |
| 1349 | sys_utimes in which case we ought to fail the call back to |
| 1350 | the user when the server rejects the call */ |
| 1351 | if((rc) && (attrs->ia_valid && |
| 1352 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
| 1353 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | /* do not need local check to inode_check_ok since the server does |
| 1357 | that */ |
| 1358 | if (!rc) |
| 1359 | rc = inode_setattr(direntry->d_inode, attrs); |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 1360 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | kfree(full_path); |
| 1362 | FreeXid(xid); |
| 1363 | return rc; |
| 1364 | } |
| 1365 | |
| 1366 | void cifs_delete_inode(struct inode *inode) |
| 1367 | { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 1368 | cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | /* may have to add back in if and when safe distributed caching of |
| 1370 | directories added e.g. via FindNotify */ |
| 1371 | } |