Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/inode.c |
| 3 | * |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/stat.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 23 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/pagemap.h> |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 25 | #include <linux/freezer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <asm/div64.h> |
| 27 | #include "cifsfs.h" |
| 28 | #include "cifspdu.h" |
| 29 | #include "cifsglob.h" |
| 30 | #include "cifsproto.h" |
| 31 | #include "cifs_debug.h" |
| 32 | #include "cifs_fs_sb.h" |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 33 | #include "cifs_unicode.h" |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 34 | #include "fscache.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 36 | |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 37 | static void cifs_set_ops(struct inode *inode) |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 38 | { |
| 39 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 40 | |
| 41 | switch (inode->i_mode & S_IFMT) { |
| 42 | case S_IFREG: |
| 43 | inode->i_op = &cifs_file_inode_ops; |
| 44 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 45 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 46 | inode->i_fop = &cifs_file_direct_nobrl_ops; |
| 47 | else |
| 48 | inode->i_fop = &cifs_file_direct_ops; |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 49 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { |
| 50 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 51 | inode->i_fop = &cifs_file_strict_nobrl_ops; |
| 52 | else |
| 53 | inode->i_fop = &cifs_file_strict_ops; |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 54 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 55 | inode->i_fop = &cifs_file_nobrl_ops; |
| 56 | else { /* not direct, send byte range locks */ |
| 57 | inode->i_fop = &cifs_file_ops; |
| 58 | } |
| 59 | |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 60 | /* check if server can support readpages */ |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 61 | if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf < |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 62 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 63 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 64 | else |
| 65 | inode->i_data.a_ops = &cifs_addr_ops; |
| 66 | break; |
| 67 | case S_IFDIR: |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 68 | #ifdef CONFIG_CIFS_DFS_UPCALL |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 69 | if (IS_AUTOMOUNT(inode)) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 70 | inode->i_op = &cifs_dfs_referral_inode_operations; |
| 71 | } else { |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 72 | #else /* NO DFS support, treat as a directory */ |
| 73 | { |
| 74 | #endif |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 75 | inode->i_op = &cifs_dir_inode_ops; |
| 76 | inode->i_fop = &cifs_dir_ops; |
| 77 | } |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 78 | break; |
| 79 | case S_IFLNK: |
| 80 | inode->i_op = &cifs_symlink_inode_ops; |
| 81 | break; |
| 82 | default: |
| 83 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 84 | break; |
| 85 | } |
| 86 | } |
| 87 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 88 | /* check inode attributes against fattr. If they don't match, tag the |
| 89 | * inode for cache invalidation |
| 90 | */ |
| 91 | static void |
| 92 | cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) |
| 93 | { |
| 94 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
| 95 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 96 | cifs_dbg(FYI, "%s: revalidating inode %llu\n", |
| 97 | __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 98 | |
| 99 | if (inode->i_state & I_NEW) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 100 | cifs_dbg(FYI, "%s: inode %llu is new\n", |
| 101 | __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 102 | return; |
| 103 | } |
| 104 | |
| 105 | /* don't bother with revalidation if we have an oplock */ |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 106 | if (CIFS_CACHE_READ(cifs_i)) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 107 | cifs_dbg(FYI, "%s: inode %llu is oplocked\n", |
| 108 | __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 109 | return; |
| 110 | } |
| 111 | |
| 112 | /* revalidate if mtime or size have changed */ |
| 113 | if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) && |
| 114 | cifs_i->server_eof == fattr->cf_eof) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 115 | cifs_dbg(FYI, "%s: inode %llu is unchanged\n", |
| 116 | __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 117 | return; |
| 118 | } |
| 119 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 120 | cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n", |
| 121 | __func__, cifs_i->uniqueid); |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 122 | set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 123 | } |
| 124 | |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 125 | /* |
| 126 | * copy nlink to the inode, unless it wasn't provided. Provide |
| 127 | * sane values if we don't have an existing one and none was provided |
| 128 | */ |
| 129 | static void |
| 130 | cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) |
| 131 | { |
| 132 | /* |
| 133 | * if we're in a situation where we can't trust what we |
| 134 | * got from the server (readdir, some non-unix cases) |
| 135 | * fake reasonable values |
| 136 | */ |
| 137 | if (fattr->cf_flags & CIFS_FATTR_UNKNOWN_NLINK) { |
| 138 | /* only provide fake values on a new inode */ |
| 139 | if (inode->i_state & I_NEW) { |
| 140 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) |
| 141 | set_nlink(inode, 2); |
| 142 | else |
| 143 | set_nlink(inode, 1); |
| 144 | } |
| 145 | return; |
| 146 | } |
| 147 | |
| 148 | /* we trust the server, so update it */ |
| 149 | set_nlink(inode, fattr->cf_nlink); |
| 150 | } |
| 151 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 152 | /* populate an inode with info from a cifs_fattr struct */ |
| 153 | void |
| 154 | cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 155 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 156 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 157 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 158 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 159 | cifs_revalidate_cache(inode, fattr); |
| 160 | |
Steve French | b7ca692 | 2012-08-03 08:43:01 -0500 | [diff] [blame] | 161 | spin_lock(&inode->i_lock); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 162 | inode->i_atime = fattr->cf_atime; |
| 163 | inode->i_mtime = fattr->cf_mtime; |
| 164 | inode->i_ctime = fattr->cf_ctime; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 165 | inode->i_rdev = fattr->cf_rdev; |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 166 | cifs_nlink_fattr_to_inode(inode, fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 167 | inode->i_uid = fattr->cf_uid; |
| 168 | inode->i_gid = fattr->cf_gid; |
| 169 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 170 | /* if dynperm is set, don't clobber existing mode */ |
| 171 | if (inode->i_state & I_NEW || |
| 172 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) |
| 173 | inode->i_mode = fattr->cf_mode; |
| 174 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 175 | cifs_i->cifsAttrs = fattr->cf_cifsattrs; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 176 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 177 | if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL) |
| 178 | cifs_i->time = 0; |
| 179 | else |
| 180 | cifs_i->time = jiffies; |
| 181 | |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 182 | if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING) |
| 183 | set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags); |
| 184 | else |
| 185 | clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 186 | |
Jeff Layton | 835a36c | 2010-02-10 16:21:33 -0500 | [diff] [blame] | 187 | cifs_i->server_eof = fattr->cf_eof; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 188 | /* |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 189 | * Can't safely change the file size here if the client is writing to |
| 190 | * it due to potential races. |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 191 | */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 192 | if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) { |
| 193 | i_size_write(inode, fattr->cf_eof); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 194 | |
| 195 | /* |
| 196 | * i_blocks is not related to (i_size / i_blksize), |
| 197 | * but instead 512 byte (2**9) size is required for |
| 198 | * calculating num blocks. |
| 199 | */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 200 | inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 201 | } |
| 202 | spin_unlock(&inode->i_lock); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 203 | |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 204 | if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) |
| 205 | inode->i_flags |= S_AUTOMOUNT; |
Jeff Layton | c2b93e0 | 2013-05-07 11:28:31 -0400 | [diff] [blame] | 206 | if (inode->i_state & I_NEW) |
| 207 | cifs_set_ops(inode); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 208 | } |
| 209 | |
Jeff Layton | 4065c80 | 2010-05-17 07:18:58 -0400 | [diff] [blame] | 210 | void |
| 211 | cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr) |
| 212 | { |
| 213 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 214 | |
| 215 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
| 216 | return; |
| 217 | |
| 218 | fattr->cf_uniqueid = iunique(sb, ROOT_I); |
| 219 | } |
| 220 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 221 | /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */ |
| 222 | void |
| 223 | cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, |
| 224 | struct cifs_sb_info *cifs_sb) |
| 225 | { |
| 226 | memset(fattr, 0, sizeof(*fattr)); |
| 227 | fattr->cf_uniqueid = le64_to_cpu(info->UniqueId); |
| 228 | fattr->cf_bytes = le64_to_cpu(info->NumOfBytes); |
| 229 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); |
| 230 | |
| 231 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); |
| 232 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime); |
| 233 | fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange); |
| 234 | fattr->cf_mode = le64_to_cpu(info->Permissions); |
| 235 | |
| 236 | /* |
| 237 | * Since we set the inode type below we need to mask off |
| 238 | * to avoid strange results if bits set above. |
| 239 | */ |
| 240 | fattr->cf_mode &= ~S_IFMT; |
| 241 | switch (le32_to_cpu(info->Type)) { |
| 242 | case UNIX_FILE: |
| 243 | fattr->cf_mode |= S_IFREG; |
| 244 | fattr->cf_dtype = DT_REG; |
| 245 | break; |
| 246 | case UNIX_SYMLINK: |
| 247 | fattr->cf_mode |= S_IFLNK; |
| 248 | fattr->cf_dtype = DT_LNK; |
| 249 | break; |
| 250 | case UNIX_DIR: |
| 251 | fattr->cf_mode |= S_IFDIR; |
| 252 | fattr->cf_dtype = DT_DIR; |
| 253 | break; |
| 254 | case UNIX_CHARDEV: |
| 255 | fattr->cf_mode |= S_IFCHR; |
| 256 | fattr->cf_dtype = DT_CHR; |
| 257 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 258 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 259 | break; |
| 260 | case UNIX_BLOCKDEV: |
| 261 | fattr->cf_mode |= S_IFBLK; |
| 262 | fattr->cf_dtype = DT_BLK; |
| 263 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 264 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 265 | break; |
| 266 | case UNIX_FIFO: |
| 267 | fattr->cf_mode |= S_IFIFO; |
| 268 | fattr->cf_dtype = DT_FIFO; |
| 269 | break; |
| 270 | case UNIX_SOCKET: |
| 271 | fattr->cf_mode |= S_IFSOCK; |
| 272 | fattr->cf_dtype = DT_SOCK; |
| 273 | break; |
| 274 | default: |
| 275 | /* safest to call it a file if we do not know */ |
| 276 | fattr->cf_mode |= S_IFREG; |
| 277 | fattr->cf_dtype = DT_REG; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 278 | cifs_dbg(FYI, "unknown type %d\n", le32_to_cpu(info->Type)); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 279 | break; |
| 280 | } |
| 281 | |
Eric W. Biederman | 46bbc25 | 2013-02-05 23:55:44 -0800 | [diff] [blame] | 282 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 283 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) { |
| 284 | u64 id = le64_to_cpu(info->Uid); |
Eric W. Biederman | 4a2c8cf | 2013-02-06 01:53:25 -0800 | [diff] [blame] | 285 | if (id < ((uid_t)-1)) { |
| 286 | kuid_t uid = make_kuid(&init_user_ns, id); |
| 287 | if (uid_valid(uid)) |
| 288 | fattr->cf_uid = uid; |
| 289 | } |
Eric W. Biederman | 46bbc25 | 2013-02-05 23:55:44 -0800 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | fattr->cf_gid = cifs_sb->mnt_gid; |
| 293 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) { |
| 294 | u64 id = le64_to_cpu(info->Gid); |
Eric W. Biederman | 4a2c8cf | 2013-02-06 01:53:25 -0800 | [diff] [blame] | 295 | if (id < ((gid_t)-1)) { |
| 296 | kgid_t gid = make_kgid(&init_user_ns, id); |
| 297 | if (gid_valid(gid)) |
| 298 | fattr->cf_gid = gid; |
| 299 | } |
Eric W. Biederman | 46bbc25 | 2013-02-05 23:55:44 -0800 | [diff] [blame] | 300 | } |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 301 | |
| 302 | fattr->cf_nlink = le64_to_cpu(info->Nlinks); |
| 303 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 304 | |
| 305 | /* |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 306 | * Fill a cifs_fattr struct with fake inode info. |
| 307 | * |
| 308 | * Needed to setup cifs_fattr data for the directory which is the |
| 309 | * junction to the new submount (ie to setup the fake directory |
| 310 | * which represents a DFS referral). |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 311 | */ |
Steve French | f1230c9 | 2009-07-22 23:13:01 +0000 | [diff] [blame] | 312 | static void |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 313 | cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 314 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 315 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 316 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 317 | cifs_dbg(FYI, "creating fake fattr for DFS referral\n"); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 318 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 319 | memset(fattr, 0, sizeof(*fattr)); |
| 320 | fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; |
| 321 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 322 | fattr->cf_gid = cifs_sb->mnt_gid; |
| 323 | fattr->cf_atime = CURRENT_TIME; |
| 324 | fattr->cf_ctime = CURRENT_TIME; |
| 325 | fattr->cf_mtime = CURRENT_TIME; |
| 326 | fattr->cf_nlink = 2; |
| 327 | fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 328 | } |
| 329 | |
Pavel Shilovsky | 4ad6504 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 330 | static int |
| 331 | cifs_get_file_info_unix(struct file *filp) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 332 | { |
| 333 | int rc; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 334 | unsigned int xid; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 335 | FILE_UNIX_BASIC_INFO find_data; |
| 336 | struct cifs_fattr fattr; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 337 | struct inode *inode = file_inode(filp); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 338 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Joe Perches | c21dfb6 | 2010-07-12 13:50:14 -0700 | [diff] [blame] | 339 | struct cifsFileInfo *cfile = filp->private_data; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 340 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 341 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 342 | xid = get_xid(); |
Pavel Shilovsky | 4b4de76 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 343 | rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->fid.netfid, &find_data); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 344 | if (!rc) { |
| 345 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); |
| 346 | } else if (rc == -EREMOTE) { |
| 347 | cifs_create_dfs_fattr(&fattr, inode->i_sb); |
| 348 | rc = 0; |
| 349 | } |
| 350 | |
| 351 | cifs_fattr_to_inode(inode, &fattr); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 352 | free_xid(xid); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 353 | return rc; |
| 354 | } |
| 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | int cifs_get_inode_info_unix(struct inode **pinode, |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 357 | const unsigned char *full_path, |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 358 | struct super_block *sb, unsigned int xid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 360 | int rc; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 361 | FILE_UNIX_BASIC_INFO find_data; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 362 | struct cifs_fattr fattr; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 363 | struct cifs_tcon *tcon; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 364 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 367 | cifs_dbg(FYI, "Getting info on %s\n", full_path); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 368 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 369 | tlink = cifs_sb_tlink(cifs_sb); |
| 370 | if (IS_ERR(tlink)) |
| 371 | return PTR_ERR(tlink); |
| 372 | tcon = tlink_tcon(tlink); |
| 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | /* could have done a find first instead but this returns more info */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 375 | rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 376 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 377 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 378 | cifs_put_tlink(tlink); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 379 | |
| 380 | if (!rc) { |
| 381 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); |
| 382 | } else if (rc == -EREMOTE) { |
| 383 | cifs_create_dfs_fattr(&fattr, sb); |
Jeff Layton | e911d0c | 2008-07-12 13:47:59 -0700 | [diff] [blame] | 384 | rc = 0; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 385 | } else { |
| 386 | return rc; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 387 | } |
| 388 | |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 389 | /* check for Minshall+French symlinks */ |
| 390 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { |
Sachin Prabhu | cb084b1 | 2013-11-25 17:09:50 +0000 | [diff] [blame] | 391 | int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, |
| 392 | full_path); |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 393 | if (tmprc) |
Sachin Prabhu | cb084b1 | 2013-11-25 17:09:50 +0000 | [diff] [blame] | 394 | cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 395 | } |
| 396 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 397 | if (*pinode == NULL) { |
| 398 | /* get new inode */ |
Jeff Layton | 4065c80 | 2010-05-17 07:18:58 -0400 | [diff] [blame] | 399 | cifs_fill_uniqueid(sb, &fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 400 | *pinode = cifs_iget(sb, &fattr); |
| 401 | if (!*pinode) |
| 402 | rc = -ENOMEM; |
| 403 | } else { |
| 404 | /* we already have inode, update it */ |
| 405 | cifs_fattr_to_inode(*pinode, &fattr); |
| 406 | } |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | return rc; |
| 409 | } |
| 410 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 411 | static int |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 412 | cifs_sfu_type(struct cifs_fattr *fattr, const char *path, |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 413 | struct cifs_sb_info *cifs_sb, unsigned int xid) |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 414 | { |
| 415 | int rc; |
Steve French | db8b631 | 2014-09-22 05:13:55 -0500 | [diff] [blame] | 416 | __u32 oplock; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 417 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 418 | struct cifs_tcon *tcon; |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 419 | struct cifs_fid fid; |
| 420 | struct cifs_open_parms oparms; |
Pavel Shilovsky | d4ffff1 | 2011-05-26 06:02:00 +0000 | [diff] [blame] | 421 | struct cifs_io_parms io_parms; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 422 | char buf[24]; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 423 | unsigned int bytes_read; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 424 | char *pbuf; |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 425 | int buf_type = CIFS_NO_BUFFER; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 426 | |
| 427 | pbuf = buf; |
| 428 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 429 | fattr->cf_mode &= ~S_IFMT; |
| 430 | |
| 431 | if (fattr->cf_eof == 0) { |
| 432 | fattr->cf_mode |= S_IFIFO; |
| 433 | fattr->cf_dtype = DT_FIFO; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 434 | return 0; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 435 | } else if (fattr->cf_eof < 8) { |
| 436 | fattr->cf_mode |= S_IFREG; |
| 437 | fattr->cf_dtype = DT_REG; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 438 | return -EINVAL; /* EOPNOTSUPP? */ |
| 439 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 440 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 441 | tlink = cifs_sb_tlink(cifs_sb); |
| 442 | if (IS_ERR(tlink)) |
| 443 | return PTR_ERR(tlink); |
| 444 | tcon = tlink_tcon(tlink); |
| 445 | |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 446 | oparms.tcon = tcon; |
| 447 | oparms.cifs_sb = cifs_sb; |
| 448 | oparms.desired_access = GENERIC_READ; |
| 449 | oparms.create_options = CREATE_NOT_DIR; |
| 450 | oparms.disposition = FILE_OPEN; |
| 451 | oparms.path = path; |
| 452 | oparms.fid = &fid; |
| 453 | oparms.reconnect = false; |
| 454 | |
Steve French | db8b631 | 2014-09-22 05:13:55 -0500 | [diff] [blame] | 455 | if (tcon->ses->server->oplocks) |
| 456 | oplock = REQ_OPLOCK; |
| 457 | else |
| 458 | oplock = 0; |
| 459 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, NULL); |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 460 | if (rc) { |
Steve French | db8b631 | 2014-09-22 05:13:55 -0500 | [diff] [blame] | 461 | cifs_dbg(FYI, "check sfu type of %s, open rc = %d\n", path, rc); |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 462 | cifs_put_tlink(tlink); |
| 463 | return rc; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 464 | } |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 465 | |
| 466 | /* Read header */ |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 467 | io_parms.netfid = fid.netfid; |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 468 | io_parms.pid = current->tgid; |
| 469 | io_parms.tcon = tcon; |
| 470 | io_parms.offset = 0; |
| 471 | io_parms.length = 24; |
| 472 | |
Steve French | db8b631 | 2014-09-22 05:13:55 -0500 | [diff] [blame] | 473 | rc = tcon->ses->server->ops->sync_read(xid, &fid, &io_parms, |
| 474 | &bytes_read, &pbuf, &buf_type); |
Pavel Shilovsky | 0360d60 | 2014-01-16 15:53:35 +0400 | [diff] [blame] | 475 | if ((rc == 0) && (bytes_read >= 8)) { |
| 476 | if (memcmp("IntxBLK", pbuf, 8) == 0) { |
| 477 | cifs_dbg(FYI, "Block device\n"); |
| 478 | fattr->cf_mode |= S_IFBLK; |
| 479 | fattr->cf_dtype = DT_BLK; |
| 480 | if (bytes_read == 24) { |
| 481 | /* we have enough to decode dev num */ |
| 482 | __u64 mjr; /* major */ |
| 483 | __u64 mnr; /* minor */ |
| 484 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 485 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 486 | fattr->cf_rdev = MKDEV(mjr, mnr); |
| 487 | } |
| 488 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
| 489 | cifs_dbg(FYI, "Char device\n"); |
| 490 | fattr->cf_mode |= S_IFCHR; |
| 491 | fattr->cf_dtype = DT_CHR; |
| 492 | if (bytes_read == 24) { |
| 493 | /* we have enough to decode dev num */ |
| 494 | __u64 mjr; /* major */ |
| 495 | __u64 mnr; /* minor */ |
| 496 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 497 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
| 498 | fattr->cf_rdev = MKDEV(mjr, mnr); |
| 499 | } |
| 500 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
| 501 | cifs_dbg(FYI, "Symlink\n"); |
| 502 | fattr->cf_mode |= S_IFLNK; |
| 503 | fattr->cf_dtype = DT_LNK; |
| 504 | } else { |
| 505 | fattr->cf_mode |= S_IFREG; /* file? */ |
| 506 | fattr->cf_dtype = DT_REG; |
| 507 | rc = -EOPNOTSUPP; |
| 508 | } |
| 509 | } else { |
| 510 | fattr->cf_mode |= S_IFREG; /* then it is a file */ |
| 511 | fattr->cf_dtype = DT_REG; |
| 512 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
| 513 | } |
Steve French | db8b631 | 2014-09-22 05:13:55 -0500 | [diff] [blame] | 514 | |
| 515 | tcon->ses->server->ops->close(xid, tcon, &fid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 516 | cifs_put_tlink(tlink); |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 517 | return rc; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 518 | } |
| 519 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 520 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
| 521 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 522 | /* |
| 523 | * Fetch mode bits as provided by SFU. |
| 524 | * |
| 525 | * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? |
| 526 | */ |
| 527 | static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 528 | struct cifs_sb_info *cifs_sb, unsigned int xid) |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 529 | { |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 530 | #ifdef CONFIG_CIFS_XATTR |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 531 | ssize_t rc; |
| 532 | char ea_value[4]; |
| 533 | __u32 mode; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 534 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 535 | struct cifs_tcon *tcon; |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 536 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 537 | tlink = cifs_sb_tlink(cifs_sb); |
| 538 | if (IS_ERR(tlink)) |
| 539 | return PTR_ERR(tlink); |
| 540 | tcon = tlink_tcon(tlink); |
| 541 | |
Steve French | d979f3b | 2014-02-01 23:27:18 -0600 | [diff] [blame] | 542 | if (tcon->ses->server->ops->query_all_EAs == NULL) { |
| 543 | cifs_put_tlink(tlink); |
| 544 | return -EOPNOTSUPP; |
| 545 | } |
| 546 | |
| 547 | rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path, |
| 548 | "SETFILEBITS", ea_value, 4 /* size of buf */, |
| 549 | cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 550 | cifs_remap(cifs_sb)); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 551 | cifs_put_tlink(tlink); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 552 | if (rc < 0) |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 553 | return (int)rc; |
| 554 | else if (rc > 3) { |
| 555 | mode = le32_to_cpu(*((__le32 *)ea_value)); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 556 | fattr->cf_mode &= ~SFBITS_MASK; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 557 | cifs_dbg(FYI, "special bits 0%o org mode 0%o\n", |
| 558 | mode, fattr->cf_mode); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 559 | fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 560 | cifs_dbg(FYI, "special mode bits 0%o\n", mode); |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 561 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 562 | |
| 563 | return 0; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 564 | #else |
| 565 | return -EOPNOTSUPP; |
| 566 | #endif |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 567 | } |
| 568 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 569 | /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ |
Steve French | f1230c9 | 2009-07-22 23:13:01 +0000 | [diff] [blame] | 570 | static void |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 571 | cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 572 | struct cifs_sb_info *cifs_sb, bool adjust_tz, |
| 573 | bool symlink) |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 574 | { |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 575 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 576 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 577 | memset(fattr, 0, sizeof(*fattr)); |
| 578 | fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); |
| 579 | if (info->DeletePending) |
| 580 | fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 581 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 582 | if (info->LastAccessTime) |
| 583 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); |
| 584 | else |
| 585 | fattr->cf_atime = CURRENT_TIME; |
| 586 | |
| 587 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); |
| 588 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); |
| 589 | |
| 590 | if (adjust_tz) { |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 591 | fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; |
| 592 | fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); |
| 596 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 597 | fattr->cf_createtime = le64_to_cpu(info->CreationTime); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 598 | |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 599 | fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 600 | |
| 601 | if (symlink) { |
| 602 | fattr->cf_mode = S_IFLNK; |
| 603 | fattr->cf_dtype = DT_LNK; |
| 604 | } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 605 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; |
| 606 | fattr->cf_dtype = DT_DIR; |
Pavel Shilovsky | 6de2ce4 | 2012-02-17 16:13:30 +0300 | [diff] [blame] | 607 | /* |
| 608 | * Server can return wrong NumberOfLinks value for directories |
| 609 | * when Unix extensions are disabled - fake it. |
| 610 | */ |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 611 | if (!tcon->unix_ext) |
| 612 | fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 613 | } else { |
| 614 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; |
| 615 | fattr->cf_dtype = DT_REG; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 616 | |
Jeff Layton | d0c280d | 2009-07-09 01:46:44 -0400 | [diff] [blame] | 617 | /* clear write bits if ATTR_READONLY is set */ |
| 618 | if (fattr->cf_cifsattrs & ATTR_READONLY) |
| 619 | fattr->cf_mode &= ~(S_IWUGO); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 620 | |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 621 | /* |
| 622 | * Don't accept zero nlink from non-unix servers unless |
| 623 | * delete is pending. Instead mark it as unknown. |
| 624 | */ |
| 625 | if ((fattr->cf_nlink < 1) && !tcon->unix_ext && |
| 626 | !info->DeletePending) { |
| 627 | cifs_dbg(1, "bogus file nlink value %u\n", |
Steve French | 6658b9f | 2013-07-04 14:38:48 -0500 | [diff] [blame] | 628 | fattr->cf_nlink); |
Jim McDonough | 74d290d | 2013-09-21 10:36:10 -0500 | [diff] [blame] | 629 | fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK; |
Steve French | 6658b9f | 2013-07-04 14:38:48 -0500 | [diff] [blame] | 630 | } |
Pavel Shilovsky | 6de2ce4 | 2012-02-17 16:13:30 +0300 | [diff] [blame] | 631 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 632 | |
| 633 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 634 | fattr->cf_gid = cifs_sb->mnt_gid; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 635 | } |
| 636 | |
Pavel Shilovsky | 4ad6504 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 637 | static int |
| 638 | cifs_get_file_info(struct file *filp) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 639 | { |
| 640 | int rc; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 641 | unsigned int xid; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 642 | FILE_ALL_INFO find_data; |
| 643 | struct cifs_fattr fattr; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 644 | struct inode *inode = file_inode(filp); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 645 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Joe Perches | c21dfb6 | 2010-07-12 13:50:14 -0700 | [diff] [blame] | 646 | struct cifsFileInfo *cfile = filp->private_data; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 647 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
Pavel Shilovsky | 4ad6504 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 648 | struct TCP_Server_Info *server = tcon->ses->server; |
| 649 | |
| 650 | if (!server->ops->query_file_info) |
| 651 | return -ENOSYS; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 652 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 653 | xid = get_xid(); |
Pavel Shilovsky | 4ad6504 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 654 | rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data); |
Pavel Shilovsky | 42274bb | 2011-10-22 14:37:50 +0400 | [diff] [blame] | 655 | switch (rc) { |
| 656 | case 0: |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 657 | cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false, |
| 658 | false); |
Pavel Shilovsky | 42274bb | 2011-10-22 14:37:50 +0400 | [diff] [blame] | 659 | break; |
| 660 | case -EREMOTE: |
| 661 | cifs_create_dfs_fattr(&fattr, inode->i_sb); |
| 662 | rc = 0; |
| 663 | break; |
| 664 | case -EOPNOTSUPP: |
| 665 | case -EINVAL: |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 666 | /* |
| 667 | * FIXME: legacy server -- fall back to path-based call? |
Steve French | ff215713 | 2010-03-09 20:30:42 +0000 | [diff] [blame] | 668 | * for now, just skip revalidating and mark inode for |
| 669 | * immediate reval. |
| 670 | */ |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 671 | rc = 0; |
| 672 | CIFS_I(inode)->time = 0; |
Pavel Shilovsky | 42274bb | 2011-10-22 14:37:50 +0400 | [diff] [blame] | 673 | default: |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 674 | goto cgfi_exit; |
Pavel Shilovsky | 42274bb | 2011-10-22 14:37:50 +0400 | [diff] [blame] | 675 | } |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 676 | |
| 677 | /* |
| 678 | * don't bother with SFU junk here -- just mark inode as needing |
| 679 | * revalidation. |
| 680 | */ |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 681 | fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; |
| 682 | fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; |
| 683 | cifs_fattr_to_inode(inode, &fattr); |
| 684 | cgfi_exit: |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 685 | free_xid(xid); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 686 | return rc; |
| 687 | } |
| 688 | |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 689 | int |
| 690 | cifs_get_inode_info(struct inode **inode, const char *full_path, |
| 691 | FILE_ALL_INFO *data, struct super_block *sb, int xid, |
Steve French | 42eacf9 | 2014-02-10 14:08:16 -0600 | [diff] [blame] | 692 | const struct cifs_fid *fid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | { |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 694 | bool validinum = false; |
| 695 | __u16 srchflgs; |
| 696 | int rc = 0, tmprc = ENOSYS; |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 697 | struct cifs_tcon *tcon; |
| 698 | struct TCP_Server_Info *server; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 699 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | char *buf = NULL; |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 702 | bool adjust_tz = false; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 703 | struct cifs_fattr fattr; |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 704 | struct cifs_search_info *srchinf = NULL; |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 705 | bool symlink = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 707 | tlink = cifs_sb_tlink(cifs_sb); |
| 708 | if (IS_ERR(tlink)) |
| 709 | return PTR_ERR(tlink); |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 710 | tcon = tlink_tcon(tlink); |
| 711 | server = tcon->ses->server; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 712 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 713 | cifs_dbg(FYI, "Getting info on %s\n", full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 715 | if ((data == NULL) && (*inode != NULL)) { |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 716 | if (CIFS_CACHE_READ(CIFS_I(*inode))) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 717 | cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 718 | goto cgii_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | } |
| 720 | } |
| 721 | |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 722 | /* if inode info is not passed, get it from server */ |
| 723 | if (data == NULL) { |
| 724 | if (!server->ops->query_path_info) { |
| 725 | rc = -ENOSYS; |
| 726 | goto cgii_exit; |
| 727 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 729 | if (buf == NULL) { |
| 730 | rc = -ENOMEM; |
| 731 | goto cgii_exit; |
| 732 | } |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 733 | data = (FILE_ALL_INFO *)buf; |
| 734 | rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path, |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 735 | data, &adjust_tz, &symlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 737 | |
| 738 | if (!rc) { |
Pavel Shilovsky | eb85d94b | 2013-10-23 17:49:47 +0400 | [diff] [blame] | 739 | cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz, |
| 740 | symlink); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 741 | } else if (rc == -EREMOTE) { |
| 742 | cifs_create_dfs_fattr(&fattr, sb); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 743 | rc = 0; |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 744 | } else if (rc == -EACCES && backup_cred(cifs_sb)) { |
| 745 | srchinf = kzalloc(sizeof(struct cifs_search_info), |
| 746 | GFP_KERNEL); |
| 747 | if (srchinf == NULL) { |
| 748 | rc = -ENOMEM; |
| 749 | goto cgii_exit; |
| 750 | } |
| 751 | |
| 752 | srchinf->endOfSearch = false; |
| 753 | srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO; |
| 754 | |
| 755 | srchflgs = CIFS_SEARCH_CLOSE_ALWAYS | |
| 756 | CIFS_SEARCH_CLOSE_AT_END | |
| 757 | CIFS_SEARCH_BACKUP_SEARCH; |
| 758 | |
| 759 | rc = CIFSFindFirst(xid, tcon, full_path, |
| 760 | cifs_sb, NULL, srchflgs, srchinf, false); |
| 761 | if (!rc) { |
| 762 | data = |
| 763 | (FILE_ALL_INFO *)srchinf->srch_entries_start; |
| 764 | |
| 765 | cifs_dir_info_to_fattr(&fattr, |
| 766 | (FILE_DIRECTORY_INFO *)data, cifs_sb); |
| 767 | fattr.cf_uniqueid = le64_to_cpu( |
| 768 | ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId); |
| 769 | validinum = true; |
| 770 | |
| 771 | cifs_buf_release(srchinf->ntwrk_buf_start); |
| 772 | } |
| 773 | kfree(srchinf); |
Steve French | 4c5930e | 2015-03-30 22:03:06 -0500 | [diff] [blame] | 774 | if (rc) |
| 775 | goto cgii_exit; |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 776 | } else |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 777 | goto cgii_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 779 | /* |
| 780 | * If an inode wasn't passed in, then get the inode number |
| 781 | * |
| 782 | * Is an i_ino of zero legal? Can we use that to check if the server |
| 783 | * supports returning inode numbers? Are there other sanity checks we |
| 784 | * can use to ensure that the server is really filling in that field? |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 785 | */ |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 786 | if (*inode == NULL) { |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 787 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 788 | if (validinum == false) { |
| 789 | if (server->ops->get_srv_inum) |
| 790 | tmprc = server->ops->get_srv_inum(xid, |
| 791 | tcon, cifs_sb, full_path, |
| 792 | &fattr.cf_uniqueid, data); |
| 793 | if (tmprc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 794 | cifs_dbg(FYI, "GetSrvInodeNum rc %d\n", |
| 795 | tmprc); |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 796 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
| 797 | cifs_autodisable_serverino(cifs_sb); |
| 798 | } |
Jeff Layton | 132ac7b | 2009-02-10 07:33:57 -0500 | [diff] [blame] | 799 | } |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 800 | } else |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 801 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
Shirish Pargaonkar | c052e2b | 2012-09-28 12:21:14 -0500 | [diff] [blame] | 802 | } else |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 803 | fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 804 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 805 | /* query for SFU type info if supported and needed */ |
| 806 | if (fattr.cf_cifsattrs & ATTR_SYSTEM && |
| 807 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 808 | tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); |
| 809 | if (tmprc) |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 810 | cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 811 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 812 | |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 813 | #ifdef CONFIG_CIFS_ACL |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 814 | /* fill in 0777 bits from ACL */ |
| 815 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 816 | rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid); |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 817 | if (rc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 818 | cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n", |
| 819 | __func__, rc); |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 820 | goto cgii_exit; |
| 821 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 822 | } |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 823 | #endif /* CONFIG_CIFS_ACL */ |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 824 | |
| 825 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
| 826 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
| 827 | cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); |
| 828 | |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 829 | /* check for Minshall+French symlinks */ |
| 830 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { |
Sachin Prabhu | cb084b1 | 2013-11-25 17:09:50 +0000 | [diff] [blame] | 831 | tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, |
| 832 | full_path); |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 833 | if (tmprc) |
Sachin Prabhu | cb084b1 | 2013-11-25 17:09:50 +0000 | [diff] [blame] | 834 | cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 835 | } |
| 836 | |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 837 | if (!*inode) { |
| 838 | *inode = cifs_iget(sb, &fattr); |
| 839 | if (!*inode) |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 840 | rc = -ENOMEM; |
| 841 | } else { |
Pavel Shilovsky | 1208ef1 | 2012-05-27 17:34:43 +0400 | [diff] [blame] | 842 | cifs_fattr_to_inode(*inode, &fattr); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 843 | } |
| 844 | |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 845 | cgii_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | kfree(buf); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 847 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | return rc; |
| 849 | } |
| 850 | |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 851 | static const struct inode_operations cifs_ipc_inode_ops = { |
| 852 | .lookup = cifs_lookup, |
| 853 | }; |
| 854 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 855 | static int |
| 856 | cifs_find_inode(struct inode *inode, void *opaque) |
| 857 | { |
| 858 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; |
| 859 | |
Jeff Layton | f30b9c1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 860 | /* don't match inode with different uniqueid */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 861 | if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) |
| 862 | return 0; |
| 863 | |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 864 | /* use createtime like an i_generation field */ |
| 865 | if (CIFS_I(inode)->createtime != fattr->cf_createtime) |
| 866 | return 0; |
| 867 | |
Jeff Layton | f30b9c1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 868 | /* don't match inode of different type */ |
| 869 | if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) |
| 870 | return 0; |
| 871 | |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 872 | /* if it's not a directory or has no dentries, then flag it */ |
Al Viro | b3d9b7a | 2012-06-09 13:51:19 -0400 | [diff] [blame] | 873 | if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry)) |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 874 | fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 875 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 876 | return 1; |
| 877 | } |
| 878 | |
| 879 | static int |
| 880 | cifs_init_inode(struct inode *inode, void *opaque) |
| 881 | { |
| 882 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; |
| 883 | |
| 884 | CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 885 | CIFS_I(inode)->createtime = fattr->cf_createtime; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 886 | return 0; |
| 887 | } |
| 888 | |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 889 | /* |
| 890 | * walk dentry list for an inode and report whether it has aliases that |
| 891 | * are hashed. We use this to determine if a directory inode can actually |
| 892 | * be used. |
| 893 | */ |
| 894 | static bool |
| 895 | inode_has_hashed_dentries(struct inode *inode) |
| 896 | { |
| 897 | struct dentry *dentry; |
| 898 | |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 899 | spin_lock(&inode->i_lock); |
Al Viro | 946e51f | 2014-10-26 19:19:16 -0400 | [diff] [blame] | 900 | hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) { |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 901 | if (!d_unhashed(dentry) || IS_ROOT(dentry)) { |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 902 | spin_unlock(&inode->i_lock); |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 903 | return true; |
| 904 | } |
| 905 | } |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 906 | spin_unlock(&inode->i_lock); |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 907 | return false; |
| 908 | } |
| 909 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 910 | /* Given fattrs, get a corresponding inode */ |
| 911 | struct inode * |
| 912 | cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) |
| 913 | { |
| 914 | unsigned long hash; |
| 915 | struct inode *inode; |
| 916 | |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 917 | retry_iget5_locked: |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 918 | cifs_dbg(FYI, "looking for uniqueid=%llu\n", fattr->cf_uniqueid); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 919 | |
| 920 | /* hash down to 32-bits on 32-bit arch */ |
| 921 | hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); |
| 922 | |
| 923 | inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 924 | if (inode) { |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 925 | /* was there a potentially problematic inode collision? */ |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 926 | if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 927 | fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 928 | |
| 929 | if (inode_has_hashed_dentries(inode)) { |
| 930 | cifs_autodisable_serverino(CIFS_SB(sb)); |
| 931 | iput(inode); |
| 932 | fattr->cf_uniqueid = iunique(sb, ROOT_I); |
| 933 | goto retry_iget5_locked; |
| 934 | } |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 935 | } |
| 936 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 937 | cifs_fattr_to_inode(inode, fattr); |
| 938 | if (sb->s_flags & MS_NOATIME) |
| 939 | inode->i_flags |= S_NOATIME | S_NOCMTIME; |
| 940 | if (inode->i_state & I_NEW) { |
| 941 | inode->i_ino = hash; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 942 | #ifdef CONFIG_CIFS_FSCACHE |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 943 | /* initialize per-inode cache cookie pointer */ |
| 944 | CIFS_I(inode)->fscache = NULL; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 945 | #endif |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 946 | unlock_new_inode(inode); |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | return inode; |
| 951 | } |
| 952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | /* gets root inode */ |
Shirish Pargaonkar | 9b6763e | 2011-02-21 23:56:59 -0600 | [diff] [blame] | 954 | struct inode *cifs_root_iget(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | { |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 956 | unsigned int xid; |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 957 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 958 | struct inode *inode = NULL; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 959 | long rc; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 960 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 961 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 962 | xid = get_xid(); |
Steve French | b5b374ea | 2014-10-06 01:01:03 -0500 | [diff] [blame] | 963 | if (tcon->unix_ext) { |
Steve French | f87d39d | 2011-05-27 03:50:55 +0000 | [diff] [blame] | 964 | rc = cifs_get_inode_info_unix(&inode, "", sb, xid); |
Steve French | b5b374ea | 2014-10-06 01:01:03 -0500 | [diff] [blame] | 965 | /* some servers mistakenly claim POSIX support */ |
| 966 | if (rc != -EOPNOTSUPP) |
| 967 | goto iget_no_retry; |
| 968 | cifs_dbg(VFS, "server does not support POSIX extensions"); |
| 969 | tcon->unix_ext = false; |
| 970 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 971 | |
Steve French | b5b374ea | 2014-10-06 01:01:03 -0500 | [diff] [blame] | 972 | rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); |
| 973 | |
| 974 | iget_no_retry: |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 975 | if (!inode) { |
| 976 | inode = ERR_PTR(rc); |
| 977 | goto out; |
| 978 | } |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 979 | |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 980 | #ifdef CONFIG_CIFS_FSCACHE |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 981 | /* populate tcon->resource_id */ |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 982 | tcon->resource_id = CIFS_I(inode)->uniqueid; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 983 | #endif |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 984 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 985 | if (rc && tcon->ipc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 986 | cifs_dbg(FYI, "ipc connection - fake read inode\n"); |
Steve French | b7ca692 | 2012-08-03 08:43:01 -0500 | [diff] [blame] | 987 | spin_lock(&inode->i_lock); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 988 | inode->i_mode |= S_IFDIR; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 989 | set_nlink(inode, 2); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 990 | inode->i_op = &cifs_ipc_inode_ops; |
| 991 | inode->i_fop = &simple_dir_operations; |
| 992 | inode->i_uid = cifs_sb->mnt_uid; |
| 993 | inode->i_gid = cifs_sb->mnt_gid; |
Steve French | b7ca692 | 2012-08-03 08:43:01 -0500 | [diff] [blame] | 994 | spin_unlock(&inode->i_lock); |
Steve French | ad66133 | 2008-08-12 14:14:40 +0000 | [diff] [blame] | 995 | } else if (rc) { |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 996 | iget_failed(inode); |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 997 | inode = ERR_PTR(rc); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 998 | } |
| 999 | |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 1000 | out: |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1001 | /* can not call macro free_xid here since in a void func |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 1002 | * TODO: This is no longer true |
| 1003 | */ |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1004 | _free_xid(xid); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 1005 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | } |
| 1007 | |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1008 | int |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1009 | cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid, |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1010 | char *full_path, __u32 dosattr) |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1011 | { |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1012 | bool set_time = false; |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1013 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Pavel Shilovsky | 6bdf6db | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 1014 | struct TCP_Server_Info *server; |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1015 | FILE_BASIC_INFO info_buf; |
| 1016 | |
Steve French | 1adcb71 | 2009-02-25 14:19:56 +0000 | [diff] [blame] | 1017 | if (attrs == NULL) |
| 1018 | return -EINVAL; |
| 1019 | |
Pavel Shilovsky | 6bdf6db | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 1020 | server = cifs_sb_master_tcon(cifs_sb)->ses->server; |
| 1021 | if (!server->ops->set_file_info) |
| 1022 | return -ENOSYS; |
| 1023 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1024 | if (attrs->ia_valid & ATTR_ATIME) { |
| 1025 | set_time = true; |
| 1026 | info_buf.LastAccessTime = |
| 1027 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 1028 | } else |
| 1029 | info_buf.LastAccessTime = 0; |
| 1030 | |
| 1031 | if (attrs->ia_valid & ATTR_MTIME) { |
| 1032 | set_time = true; |
| 1033 | info_buf.LastWriteTime = |
| 1034 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 1035 | } else |
| 1036 | info_buf.LastWriteTime = 0; |
| 1037 | |
| 1038 | /* |
| 1039 | * Samba throws this field away, but windows may actually use it. |
| 1040 | * Do not set ctime unless other time stamps are changed explicitly |
| 1041 | * (i.e. by utimes()) since we would then have a mix of client and |
| 1042 | * server times. |
| 1043 | */ |
| 1044 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1045 | cifs_dbg(FYI, "CIFS - CTIME changed\n"); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1046 | info_buf.ChangeTime = |
| 1047 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 1048 | } else |
| 1049 | info_buf.ChangeTime = 0; |
| 1050 | |
| 1051 | info_buf.CreationTime = 0; /* don't change */ |
| 1052 | info_buf.Attributes = cpu_to_le32(dosattr); |
| 1053 | |
Pavel Shilovsky | 6bdf6db | 2012-09-18 16:20:32 -0700 | [diff] [blame] | 1054 | return server->ops->set_file_info(inode, full_path, &info_buf, xid); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1055 | } |
| 1056 | |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1057 | /* |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1058 | * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1059 | * and rename it to a random name that hopefully won't conflict with |
| 1060 | * anything else. |
| 1061 | */ |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1062 | int |
| 1063 | cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, |
| 1064 | const unsigned int xid) |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1065 | { |
| 1066 | int oplock = 0; |
| 1067 | int rc; |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1068 | struct cifs_fid fid; |
| 1069 | struct cifs_open_parms oparms; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1070 | struct inode *inode = d_inode(dentry); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1071 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 1072 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1073 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1074 | struct cifs_tcon *tcon; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1075 | __u32 dosattr, origattr; |
| 1076 | FILE_BASIC_INFO *info_buf = NULL; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1077 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1078 | tlink = cifs_sb_tlink(cifs_sb); |
| 1079 | if (IS_ERR(tlink)) |
| 1080 | return PTR_ERR(tlink); |
| 1081 | tcon = tlink_tcon(tlink); |
| 1082 | |
Sachin Prabhu | c483a98 | 2013-03-05 19:25:56 +0000 | [diff] [blame] | 1083 | /* |
| 1084 | * We cannot rename the file if the server doesn't support |
| 1085 | * CAP_INFOLEVEL_PASSTHRU |
| 1086 | */ |
| 1087 | if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) { |
| 1088 | rc = -EBUSY; |
| 1089 | goto out; |
| 1090 | } |
| 1091 | |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1092 | oparms.tcon = tcon; |
| 1093 | oparms.cifs_sb = cifs_sb; |
| 1094 | oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES; |
| 1095 | oparms.create_options = CREATE_NOT_DIR; |
| 1096 | oparms.disposition = FILE_OPEN; |
| 1097 | oparms.path = full_path; |
| 1098 | oparms.fid = &fid; |
| 1099 | oparms.reconnect = false; |
| 1100 | |
| 1101 | rc = CIFS_open(xid, &oparms, &oplock, NULL); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1102 | if (rc != 0) |
| 1103 | goto out; |
| 1104 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1105 | origattr = cifsInode->cifsAttrs; |
| 1106 | if (origattr == 0) |
| 1107 | origattr |= ATTR_NORMAL; |
| 1108 | |
| 1109 | dosattr = origattr & ~ATTR_READONLY; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1110 | if (dosattr == 0) |
| 1111 | dosattr |= ATTR_NORMAL; |
| 1112 | dosattr |= ATTR_HIDDEN; |
| 1113 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1114 | /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */ |
| 1115 | if (dosattr != origattr) { |
| 1116 | info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL); |
| 1117 | if (info_buf == NULL) { |
| 1118 | rc = -ENOMEM; |
| 1119 | goto out_close; |
| 1120 | } |
| 1121 | info_buf->Attributes = cpu_to_le32(dosattr); |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1122 | rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid, |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1123 | current->tgid); |
| 1124 | /* although we would like to mark the file hidden |
| 1125 | if that fails we will still try to rename it */ |
Sachin Prabhu | 72d282d | 2013-03-05 19:25:55 +0000 | [diff] [blame] | 1126 | if (!rc) |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1127 | cifsInode->cifsAttrs = dosattr; |
| 1128 | else |
| 1129 | dosattr = origattr; /* since not able to change them */ |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1130 | } |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1131 | |
Jeff Layton | dd1db2d | 2008-10-16 19:27:12 -0400 | [diff] [blame] | 1132 | /* rename the file */ |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1133 | rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL, |
| 1134 | cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1135 | cifs_remap(cifs_sb)); |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1136 | if (rc != 0) { |
Sachin Prabhu | 47c78f4 | 2013-03-11 13:08:49 +0000 | [diff] [blame] | 1137 | rc = -EBUSY; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1138 | goto undo_setattr; |
| 1139 | } |
Jeff Layton | 6d22f09 | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1140 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1141 | /* try to set DELETE_ON_CLOSE */ |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 1142 | if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) { |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1143 | rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid, |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1144 | current->tgid); |
| 1145 | /* |
| 1146 | * some samba versions return -ENOENT when we try to set the |
| 1147 | * file disposition here. Likely a samba bug, but work around |
| 1148 | * it for now. This means that some cifsXXX files may hang |
| 1149 | * around after they shouldn't. |
| 1150 | * |
| 1151 | * BB: remove this hack after more servers have the fix |
| 1152 | */ |
| 1153 | if (rc == -ENOENT) |
| 1154 | rc = 0; |
| 1155 | else if (rc != 0) { |
Sachin Prabhu | 47c78f4 | 2013-03-11 13:08:49 +0000 | [diff] [blame] | 1156 | rc = -EBUSY; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1157 | goto undo_rename; |
| 1158 | } |
Jeff Layton | aff8d5c | 2014-04-30 09:31:45 -0400 | [diff] [blame] | 1159 | set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags); |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1160 | } |
Jeff Layton | 7ce86d5 | 2008-09-24 11:32:59 -0400 | [diff] [blame] | 1161 | |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1162 | out_close: |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1163 | CIFSSMBClose(xid, tcon, fid.netfid); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1164 | out: |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1165 | kfree(info_buf); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1166 | cifs_put_tlink(tlink); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1167 | return rc; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1168 | |
| 1169 | /* |
| 1170 | * reset everything back to the original state. Don't bother |
| 1171 | * dealing with errors here since we can't do anything about |
| 1172 | * them anyway. |
| 1173 | */ |
| 1174 | undo_rename: |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1175 | CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1176 | cifs_sb->local_nls, cifs_remap(cifs_sb)); |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1177 | undo_setattr: |
| 1178 | if (dosattr != origattr) { |
| 1179 | info_buf->Attributes = cpu_to_le32(origattr); |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1180 | if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid, |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1181 | current->tgid)) |
| 1182 | cifsInode->cifsAttrs = origattr; |
| 1183 | } |
| 1184 | |
| 1185 | goto out_close; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1186 | } |
| 1187 | |
Steve French | b7ca692 | 2012-08-03 08:43:01 -0500 | [diff] [blame] | 1188 | /* copied from fs/nfs/dir.c with small changes */ |
| 1189 | static void |
| 1190 | cifs_drop_nlink(struct inode *inode) |
| 1191 | { |
| 1192 | spin_lock(&inode->i_lock); |
| 1193 | if (inode->i_nlink > 0) |
| 1194 | drop_nlink(inode); |
| 1195 | spin_unlock(&inode->i_lock); |
| 1196 | } |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1197 | |
| 1198 | /* |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1199 | * If d_inode(dentry) is null (usually meaning the cached dentry |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1200 | * is a negative dentry) then we would attempt a standard SMB delete, but |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1201 | * if that fails we can not attempt the fall back mechanisms on EACCESS |
| 1202 | * but will return the EACCESS to the caller. Note that the VFS does not call |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1203 | * unlink on negative dentries currently. |
| 1204 | */ |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1205 | int cifs_unlink(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | { |
| 1207 | int rc = 0; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1208 | unsigned int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | char *full_path = NULL; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1210 | struct inode *inode = d_inode(dentry); |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1211 | struct cifsInodeInfo *cifs_inode; |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1212 | struct super_block *sb = dir->i_sb; |
| 1213 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1214 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1215 | struct cifs_tcon *tcon; |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1216 | struct TCP_Server_Info *server; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1217 | struct iattr *attrs = NULL; |
| 1218 | __u32 dosattr = 0, origattr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1220 | cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1222 | tlink = cifs_sb_tlink(cifs_sb); |
| 1223 | if (IS_ERR(tlink)) |
| 1224 | return PTR_ERR(tlink); |
| 1225 | tcon = tlink_tcon(tlink); |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1226 | server = tcon->ses->server; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1227 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1228 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1230 | /* Unlink can be called from rename so we can not take the |
| 1231 | * sb->s_vfs_rename_mutex here */ |
| 1232 | full_path = build_path_from_dentry(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1234 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1235 | goto unlink_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | } |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1237 | |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 1238 | if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
| 1239 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1240 | rc = CIFSPOSIXDelFile(xid, tcon, full_path, |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1241 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1242 | cifs_remap(cifs_sb)); |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1243 | cifs_dbg(FYI, "posix del rc %d\n", rc); |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1244 | if ((rc == 0) || (rc == -ENOENT)) |
| 1245 | goto psx_del_no_retry; |
| 1246 | } |
| 1247 | |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1248 | retry_std_delete: |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1249 | if (!server->ops->unlink) { |
| 1250 | rc = -ENOSYS; |
| 1251 | goto psx_del_no_retry; |
| 1252 | } |
| 1253 | |
| 1254 | rc = server->ops->unlink(xid, tcon, full_path, cifs_sb); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1255 | |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1256 | psx_del_no_retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | if (!rc) { |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1258 | if (inode) |
Steve French | b7ca692 | 2012-08-03 08:43:01 -0500 | [diff] [blame] | 1259 | cifs_drop_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | } else if (rc == -ENOENT) { |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1261 | d_drop(dentry); |
Sachin Prabhu | 47c78f4 | 2013-03-11 13:08:49 +0000 | [diff] [blame] | 1262 | } else if (rc == -EBUSY) { |
Pavel Shilovsky | ed6875e | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 1263 | if (server->ops->rename_pending_delete) { |
| 1264 | rc = server->ops->rename_pending_delete(full_path, |
| 1265 | dentry, xid); |
| 1266 | if (rc == 0) |
| 1267 | cifs_drop_nlink(inode); |
| 1268 | } |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1269 | } else if ((rc == -EACCES) && (dosattr == 0) && inode) { |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1270 | attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); |
| 1271 | if (attrs == NULL) { |
| 1272 | rc = -ENOMEM; |
| 1273 | goto out_reval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | } |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1275 | |
| 1276 | /* try to reset dos attributes */ |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1277 | cifs_inode = CIFS_I(inode); |
| 1278 | origattr = cifs_inode->cifsAttrs; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1279 | if (origattr == 0) |
| 1280 | origattr |= ATTR_NORMAL; |
| 1281 | dosattr = origattr & ~ATTR_READONLY; |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1282 | if (dosattr == 0) |
| 1283 | dosattr |= ATTR_NORMAL; |
| 1284 | dosattr |= ATTR_HIDDEN; |
| 1285 | |
| 1286 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1287 | if (rc != 0) |
| 1288 | goto out_reval; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1289 | |
| 1290 | goto retry_std_delete; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | } |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1292 | |
| 1293 | /* undo the setattr if we errored out and it's needed */ |
| 1294 | if (rc != 0 && dosattr != 0) |
| 1295 | cifs_set_file_info(inode, attrs, xid, full_path, origattr); |
| 1296 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1297 | out_reval: |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1298 | if (inode) { |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1299 | cifs_inode = CIFS_I(inode); |
| 1300 | cifs_inode->time = 0; /* will force revalidate to get info |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 1301 | when needed */ |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1302 | inode->i_ctime = current_fs_time(sb); |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 1303 | } |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1304 | dir->i_ctime = dir->i_mtime = current_fs_time(sb); |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1305 | cifs_inode = CIFS_I(dir); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1306 | CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1307 | unlink_out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | kfree(full_path); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1309 | kfree(attrs); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1310 | free_xid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1311 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | return rc; |
| 1313 | } |
| 1314 | |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1315 | static int |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1316 | cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode, |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1317 | const char *full_path, struct cifs_sb_info *cifs_sb, |
| 1318 | struct cifs_tcon *tcon, const unsigned int xid) |
| 1319 | { |
| 1320 | int rc = 0; |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1321 | struct inode *inode = NULL; |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1322 | |
| 1323 | if (tcon->unix_ext) |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1324 | rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb, |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1325 | xid); |
| 1326 | else |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1327 | rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb, |
| 1328 | xid, NULL); |
| 1329 | |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1330 | if (rc) |
| 1331 | return rc; |
| 1332 | |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1333 | /* |
| 1334 | * setting nlink not necessary except in cases where we failed to get it |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1335 | * from the server or was set bogus. Also, since this is a brand new |
| 1336 | * inode, no need to grab the i_lock before setting the i_nlink. |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1337 | */ |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1338 | if (inode->i_nlink < 2) |
| 1339 | set_nlink(inode, 2); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1340 | mode &= ~current_umask(); |
| 1341 | /* must turn on setgid bit if parent dir has it */ |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1342 | if (parent->i_mode & S_ISGID) |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1343 | mode |= S_ISGID; |
| 1344 | |
| 1345 | if (tcon->unix_ext) { |
| 1346 | struct cifs_unix_set_info_args args = { |
| 1347 | .mode = mode, |
| 1348 | .ctime = NO_CHANGE_64, |
| 1349 | .atime = NO_CHANGE_64, |
| 1350 | .mtime = NO_CHANGE_64, |
| 1351 | .device = 0, |
| 1352 | }; |
| 1353 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 1354 | args.uid = current_fsuid(); |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1355 | if (parent->i_mode & S_ISGID) |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 1356 | args.gid = parent->i_gid; |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1357 | else |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 1358 | args.gid = current_fsgid(); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1359 | } else { |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 1360 | args.uid = INVALID_UID; /* no change */ |
| 1361 | args.gid = INVALID_GID; /* no change */ |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1362 | } |
| 1363 | CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args, |
| 1364 | cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1365 | cifs_remap(cifs_sb)); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1366 | } else { |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1367 | struct TCP_Server_Info *server = tcon->ses->server; |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1368 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1369 | (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo) |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1370 | server->ops->mkdir_setinfo(inode, full_path, cifs_sb, |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1371 | tcon, xid); |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1372 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
| 1373 | inode->i_mode = (mode | S_IFDIR); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1374 | |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1375 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
| 1376 | inode->i_uid = current_fsuid(); |
| 1377 | if (inode->i_mode & S_ISGID) |
| 1378 | inode->i_gid = parent->i_gid; |
| 1379 | else |
| 1380 | inode->i_gid = current_fsgid(); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1381 | } |
| 1382 | } |
Jeff Layton | 101b92d | 2012-09-19 06:22:45 -0700 | [diff] [blame] | 1383 | d_instantiate(dentry, inode); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1384 | return rc; |
| 1385 | } |
| 1386 | |
| 1387 | static int |
| 1388 | cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode, |
| 1389 | const char *full_path, struct cifs_sb_info *cifs_sb, |
| 1390 | struct cifs_tcon *tcon, const unsigned int xid) |
| 1391 | { |
| 1392 | int rc = 0; |
| 1393 | u32 oplock = 0; |
| 1394 | FILE_UNIX_BASIC_INFO *info = NULL; |
| 1395 | struct inode *newinode = NULL; |
| 1396 | struct cifs_fattr fattr; |
| 1397 | |
| 1398 | info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
| 1399 | if (info == NULL) { |
| 1400 | rc = -ENOMEM; |
| 1401 | goto posix_mkdir_out; |
| 1402 | } |
| 1403 | |
| 1404 | mode &= ~current_umask(); |
| 1405 | rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode, |
| 1406 | NULL /* netfid */, info, &oplock, full_path, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1407 | cifs_sb->local_nls, cifs_remap(cifs_sb)); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1408 | if (rc == -EOPNOTSUPP) |
| 1409 | goto posix_mkdir_out; |
| 1410 | else if (rc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1411 | cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1412 | d_drop(dentry); |
| 1413 | goto posix_mkdir_out; |
| 1414 | } |
| 1415 | |
| 1416 | if (info->Type == cpu_to_le32(-1)) |
| 1417 | /* no return info, go query for it */ |
| 1418 | goto posix_mkdir_get_info; |
| 1419 | /* |
| 1420 | * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if |
| 1421 | * need to set uid/gid. |
| 1422 | */ |
| 1423 | |
| 1424 | cifs_unix_basic_to_fattr(&fattr, info, cifs_sb); |
| 1425 | cifs_fill_uniqueid(inode->i_sb, &fattr); |
| 1426 | newinode = cifs_iget(inode->i_sb, &fattr); |
| 1427 | if (!newinode) |
| 1428 | goto posix_mkdir_get_info; |
| 1429 | |
| 1430 | d_instantiate(dentry, newinode); |
| 1431 | |
| 1432 | #ifdef CONFIG_CIFS_DEBUG2 |
Al Viro | 35c265e | 2014-08-19 20:25:34 -0400 | [diff] [blame] | 1433 | cifs_dbg(FYI, "instantiated dentry %p %pd to inode %p\n", |
| 1434 | dentry, dentry, newinode); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1435 | |
| 1436 | if (newinode->i_nlink != 2) |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1437 | cifs_dbg(FYI, "unexpected number of links %d\n", |
| 1438 | newinode->i_nlink); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1439 | #endif |
| 1440 | |
| 1441 | posix_mkdir_out: |
| 1442 | kfree(info); |
| 1443 | return rc; |
| 1444 | posix_mkdir_get_info: |
| 1445 | rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon, |
| 1446 | xid); |
| 1447 | goto posix_mkdir_out; |
| 1448 | } |
| 1449 | |
Al Viro | 18bb1db | 2011-07-26 01:41:39 -0400 | [diff] [blame] | 1450 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | { |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1452 | int rc = 0; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1453 | unsigned int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1455 | struct tcon_link *tlink; |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 1456 | struct cifs_tcon *tcon; |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1457 | struct TCP_Server_Info *server; |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1458 | char *full_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1460 | cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n", |
| 1461 | mode, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1464 | tlink = cifs_sb_tlink(cifs_sb); |
| 1465 | if (IS_ERR(tlink)) |
| 1466 | return PTR_ERR(tlink); |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 1467 | tcon = tlink_tcon(tlink); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1468 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1469 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1471 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1473 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1474 | goto mkdir_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1476 | |
Pavel Shilovsky | 29e20f9 | 2012-07-13 13:58:14 +0400 | [diff] [blame] | 1477 | if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
| 1478 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1479 | rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb, |
| 1480 | tcon, xid); |
| 1481 | if (rc != -EOPNOTSUPP) |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1482 | goto mkdir_out; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1483 | } |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1484 | |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1485 | server = tcon->ses->server; |
| 1486 | |
| 1487 | if (!server->ops->mkdir) { |
| 1488 | rc = -ENOSYS; |
| 1489 | goto mkdir_out; |
| 1490 | } |
| 1491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Pavel Shilovsky | f436720 | 2012-03-17 11:41:12 +0300 | [diff] [blame] | 1493 | rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | if (rc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1495 | cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | d_drop(direntry); |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1497 | goto mkdir_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | } |
Pavel Shilovsky | ff691e9 | 2012-07-13 14:04:46 +0400 | [diff] [blame] | 1499 | |
| 1500 | rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon, |
| 1501 | xid); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1502 | mkdir_out: |
Pavel Shilovsky | 6de2ce4 | 2012-02-17 16:13:30 +0300 | [diff] [blame] | 1503 | /* |
| 1504 | * Force revalidate to get parent dir info when needed since cached |
| 1505 | * attributes are invalid now. |
| 1506 | */ |
| 1507 | CIFS_I(inode)->time = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | kfree(full_path); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1509 | free_xid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1510 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | return rc; |
| 1512 | } |
| 1513 | |
| 1514 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 1515 | { |
| 1516 | int rc = 0; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1517 | unsigned int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1519 | struct tcon_link *tlink; |
Pavel Shilovsky | f958ca5 | 2012-07-10 16:14:18 +0400 | [diff] [blame] | 1520 | struct cifs_tcon *tcon; |
| 1521 | struct TCP_Server_Info *server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | char *full_path = NULL; |
| 1523 | struct cifsInodeInfo *cifsInode; |
| 1524 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1525 | cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1527 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1529 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1531 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1532 | goto rmdir_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | } |
| 1534 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1535 | cifs_sb = CIFS_SB(inode->i_sb); |
| 1536 | tlink = cifs_sb_tlink(cifs_sb); |
| 1537 | if (IS_ERR(tlink)) { |
| 1538 | rc = PTR_ERR(tlink); |
| 1539 | goto rmdir_exit; |
| 1540 | } |
Pavel Shilovsky | f958ca5 | 2012-07-10 16:14:18 +0400 | [diff] [blame] | 1541 | tcon = tlink_tcon(tlink); |
| 1542 | server = tcon->ses->server; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1543 | |
Pavel Shilovsky | f958ca5 | 2012-07-10 16:14:18 +0400 | [diff] [blame] | 1544 | if (!server->ops->rmdir) { |
| 1545 | rc = -ENOSYS; |
| 1546 | cifs_put_tlink(tlink); |
| 1547 | goto rmdir_exit; |
| 1548 | } |
| 1549 | |
| 1550 | rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1551 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | |
| 1553 | if (!rc) { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1554 | spin_lock(&d_inode(direntry)->i_lock); |
| 1555 | i_size_write(d_inode(direntry), 0); |
| 1556 | clear_nlink(d_inode(direntry)); |
| 1557 | spin_unlock(&d_inode(direntry)->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | } |
| 1559 | |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1560 | cifsInode = CIFS_I(d_inode(direntry)); |
Pavel Shilovsky | 6de2ce4 | 2012-02-17 16:13:30 +0300 | [diff] [blame] | 1561 | /* force revalidate to go get info when needed */ |
| 1562 | cifsInode->time = 0; |
Steve French | 42c2454 | 2009-01-13 22:03:55 +0000 | [diff] [blame] | 1563 | |
| 1564 | cifsInode = CIFS_I(inode); |
Pavel Shilovsky | 6de2ce4 | 2012-02-17 16:13:30 +0300 | [diff] [blame] | 1565 | /* |
| 1566 | * Force revalidate to get parent dir info when needed since cached |
| 1567 | * attributes are invalid now. |
| 1568 | */ |
| 1569 | cifsInode->time = 0; |
Steve French | 42c2454 | 2009-01-13 22:03:55 +0000 | [diff] [blame] | 1570 | |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1571 | d_inode(direntry)->i_ctime = inode->i_ctime = inode->i_mtime = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | current_fs_time(inode->i_sb); |
| 1573 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1574 | rmdir_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | kfree(full_path); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1576 | free_xid(xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | return rc; |
| 1578 | } |
| 1579 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1580 | static int |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1581 | cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, |
| 1582 | const char *from_path, struct dentry *to_dentry, |
| 1583 | const char *to_path) |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1584 | { |
| 1585 | struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1586 | struct tcon_link *tlink; |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1587 | struct cifs_tcon *tcon; |
| 1588 | struct TCP_Server_Info *server; |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1589 | struct cifs_fid fid; |
| 1590 | struct cifs_open_parms oparms; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1591 | int oplock, rc; |
| 1592 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1593 | tlink = cifs_sb_tlink(cifs_sb); |
| 1594 | if (IS_ERR(tlink)) |
| 1595 | return PTR_ERR(tlink); |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1596 | tcon = tlink_tcon(tlink); |
| 1597 | server = tcon->ses->server; |
| 1598 | |
| 1599 | if (!server->ops->rename) |
| 1600 | return -ENOSYS; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1601 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1602 | /* try path-based rename first */ |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1603 | rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1604 | |
| 1605 | /* |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1606 | * Don't bother with rename by filehandle unless file is busy and |
| 1607 | * source. Note that cross directory moves do not work with |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1608 | * rename by filehandle to various Windows servers. |
| 1609 | */ |
Sachin Prabhu | 47c78f4 | 2013-03-11 13:08:49 +0000 | [diff] [blame] | 1610 | if (rc == 0 || rc != -EBUSY) |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1611 | goto do_rename_exit; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1612 | |
Jeff Layton | ed0e3ac | 2010-06-01 16:21:01 -0400 | [diff] [blame] | 1613 | /* open-file renames don't work across directories */ |
| 1614 | if (to_dentry->d_parent != from_dentry->d_parent) |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1615 | goto do_rename_exit; |
Jeff Layton | ed0e3ac | 2010-06-01 16:21:01 -0400 | [diff] [blame] | 1616 | |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1617 | oparms.tcon = tcon; |
| 1618 | oparms.cifs_sb = cifs_sb; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1619 | /* open the file to be renamed -- we need DELETE perms */ |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1620 | oparms.desired_access = DELETE; |
| 1621 | oparms.create_options = CREATE_NOT_DIR; |
| 1622 | oparms.disposition = FILE_OPEN; |
| 1623 | oparms.path = from_path; |
| 1624 | oparms.fid = &fid; |
| 1625 | oparms.reconnect = false; |
| 1626 | |
| 1627 | rc = CIFS_open(xid, &oparms, &oplock, NULL); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1628 | if (rc == 0) { |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1629 | rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1630 | (const char *) to_dentry->d_name.name, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1631 | cifs_sb->local_nls, cifs_remap(cifs_sb)); |
Pavel Shilovsky | d81b8a4 | 2014-01-16 15:53:36 +0400 | [diff] [blame] | 1632 | CIFSSMBClose(xid, tcon, fid.netfid); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1633 | } |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1634 | do_rename_exit: |
| 1635 | cifs_put_tlink(tlink); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1636 | return rc; |
| 1637 | } |
| 1638 | |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1639 | int |
Miklos Szeredi | 7c33d59 | 2014-07-23 15:15:36 +0200 | [diff] [blame] | 1640 | cifs_rename2(struct inode *source_dir, struct dentry *source_dentry, |
| 1641 | struct inode *target_dir, struct dentry *target_dentry, |
| 1642 | unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | { |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1644 | char *from_name = NULL; |
| 1645 | char *to_name = NULL; |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1646 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1647 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1648 | struct cifs_tcon *tcon; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1649 | FILE_UNIX_BASIC_INFO *info_buf_source = NULL; |
| 1650 | FILE_UNIX_BASIC_INFO *info_buf_target; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1651 | unsigned int xid; |
| 1652 | int rc, tmprc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | |
Miklos Szeredi | 7c33d59 | 2014-07-23 15:15:36 +0200 | [diff] [blame] | 1654 | if (flags & ~RENAME_NOREPLACE) |
| 1655 | return -EINVAL; |
| 1656 | |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1657 | cifs_sb = CIFS_SB(source_dir->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1658 | tlink = cifs_sb_tlink(cifs_sb); |
| 1659 | if (IS_ERR(tlink)) |
| 1660 | return PTR_ERR(tlink); |
| 1661 | tcon = tlink_tcon(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1663 | xid = get_xid(); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1664 | |
| 1665 | /* |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1666 | * we already have the rename sem so we do not need to |
| 1667 | * grab it again here to protect the path integrity |
| 1668 | */ |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1669 | from_name = build_path_from_dentry(source_dentry); |
| 1670 | if (from_name == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | rc = -ENOMEM; |
| 1672 | goto cifs_rename_exit; |
| 1673 | } |
| 1674 | |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1675 | to_name = build_path_from_dentry(target_dentry); |
| 1676 | if (to_name == NULL) { |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1677 | rc = -ENOMEM; |
| 1678 | goto cifs_rename_exit; |
| 1679 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1681 | rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry, |
| 1682 | to_name); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1683 | |
Miklos Szeredi | 7c33d59 | 2014-07-23 15:15:36 +0200 | [diff] [blame] | 1684 | /* |
| 1685 | * No-replace is the natural behavior for CIFS, so skip unlink hacks. |
| 1686 | */ |
| 1687 | if (flags & RENAME_NOREPLACE) |
| 1688 | goto cifs_rename_exit; |
| 1689 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1690 | if (rc == -EEXIST && tcon->unix_ext) { |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1691 | /* |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1692 | * Are src and dst hardlinks of same inode? We can only tell |
| 1693 | * with unix extensions enabled. |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1694 | */ |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1695 | info_buf_source = |
| 1696 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), |
| 1697 | GFP_KERNEL); |
| 1698 | if (info_buf_source == NULL) { |
| 1699 | rc = -ENOMEM; |
| 1700 | goto cifs_rename_exit; |
| 1701 | } |
| 1702 | |
| 1703 | info_buf_target = info_buf_source + 1; |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1704 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name, |
| 1705 | info_buf_source, |
| 1706 | cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1707 | cifs_remap(cifs_sb)); |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1708 | if (tmprc != 0) |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1709 | goto unlink_target; |
| 1710 | |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1711 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name, |
| 1712 | info_buf_target, |
| 1713 | cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 1714 | cifs_remap(cifs_sb)); |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1715 | |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1716 | if (tmprc == 0 && (info_buf_source->UniqueId == |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1717 | info_buf_target->UniqueId)) { |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1718 | /* same file, POSIX says that this is a noop */ |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1719 | rc = 0; |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1720 | goto cifs_rename_exit; |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1721 | } |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1722 | } |
| 1723 | /* |
| 1724 | * else ... BB we could add the same check for Windows by |
| 1725 | * checking the UniqueId via FILE_INTERNAL_INFO |
| 1726 | */ |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1727 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1728 | unlink_target: |
Jeff Layton | fc6f394 | 2009-04-17 11:45:30 -0400 | [diff] [blame] | 1729 | /* Try unlinking the target dentry if it's not negative */ |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1730 | if (d_really_is_positive(target_dentry) && (rc == -EACCES || rc == -EEXIST)) { |
Pavel Shilovsky | a07d322 | 2014-08-22 13:32:09 +0400 | [diff] [blame] | 1731 | if (d_is_dir(target_dentry)) |
| 1732 | tmprc = cifs_rmdir(target_dir, target_dentry); |
| 1733 | else |
| 1734 | tmprc = cifs_unlink(target_dir, target_dentry); |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1735 | if (tmprc) |
| 1736 | goto cifs_rename_exit; |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1737 | rc = cifs_do_rename(xid, source_dentry, from_name, |
| 1738 | target_dentry, to_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | } |
| 1740 | |
Pavel Shilovsky | b46799a | 2014-08-18 20:49:58 +0400 | [diff] [blame] | 1741 | /* force revalidate to go get info when needed */ |
| 1742 | CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0; |
| 1743 | |
| 1744 | source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime = |
| 1745 | target_dir->i_mtime = current_fs_time(source_dir->i_sb); |
| 1746 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | cifs_rename_exit: |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1748 | kfree(info_buf_source); |
Pavel Shilovsky | 8ceb984 | 2012-09-18 16:20:30 -0700 | [diff] [blame] | 1749 | kfree(from_name); |
| 1750 | kfree(to_name); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1751 | free_xid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1752 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | return rc; |
| 1754 | } |
| 1755 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1756 | static bool |
| 1757 | cifs_inode_needs_reval(struct inode *inode) |
| 1758 | { |
| 1759 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1760 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1761 | |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1762 | if (CIFS_CACHE_READ(cifs_i)) |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1763 | return false; |
| 1764 | |
| 1765 | if (!lookupCacheEnabled) |
| 1766 | return true; |
| 1767 | |
| 1768 | if (cifs_i->time == 0) |
| 1769 | return true; |
| 1770 | |
Jeff Layton | a87c9ad | 2014-03-26 07:24:23 -0700 | [diff] [blame] | 1771 | if (!cifs_sb->actimeo) |
| 1772 | return true; |
| 1773 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1774 | if (!time_in_range(jiffies, cifs_i->time, |
| 1775 | cifs_i->time + cifs_sb->actimeo)) |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1776 | return true; |
| 1777 | |
Jeff Layton | db19272 | 2010-05-17 14:51:49 -0400 | [diff] [blame] | 1778 | /* hardlinked files w/ noserverino get "special" treatment */ |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1779 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && |
Jeff Layton | db19272 | 2010-05-17 14:51:49 -0400 | [diff] [blame] | 1780 | S_ISREG(inode->i_mode) && inode->i_nlink != 1) |
| 1781 | return true; |
| 1782 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1783 | return false; |
| 1784 | } |
| 1785 | |
Suresh Jayaraman | 523fb8c | 2010-11-29 22:39:47 +0530 | [diff] [blame] | 1786 | /* |
| 1787 | * Zap the cache. Called when invalid_mapping flag is set. |
| 1788 | */ |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1789 | int |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1790 | cifs_invalidate_mapping(struct inode *inode) |
| 1791 | { |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1792 | int rc = 0; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1793 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1794 | if (inode->i_mapping && inode->i_mapping->nrpages != 0) { |
Pavel Shilovsky | 257fb1f | 2011-03-16 01:55:32 +0300 | [diff] [blame] | 1795 | rc = invalidate_inode_pages2(inode->i_mapping); |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1796 | if (rc) |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1797 | cifs_dbg(VFS, "%s: could not invalidate inode %p\n", |
| 1798 | __func__, inode); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1799 | } |
Pavel Shilovsky | 257fb1f | 2011-03-16 01:55:32 +0300 | [diff] [blame] | 1800 | |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 1801 | cifs_fscache_reset_inode_cookie(inode); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1802 | return rc; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1803 | } |
| 1804 | |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1805 | /** |
| 1806 | * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks |
| 1807 | * @word: long word containing the bit lock |
| 1808 | */ |
| 1809 | static int |
NeilBrown | c122132 | 2014-07-07 15:16:04 +1000 | [diff] [blame] | 1810 | cifs_wait_bit_killable(struct wait_bit_key *key) |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1811 | { |
| 1812 | if (fatal_signal_pending(current)) |
| 1813 | return -ERESTARTSYS; |
| 1814 | freezable_schedule_unsafe(); |
| 1815 | return 0; |
| 1816 | } |
| 1817 | |
Jeff Layton | e284e53 | 2014-04-30 09:31:46 -0400 | [diff] [blame] | 1818 | int |
| 1819 | cifs_revalidate_mapping(struct inode *inode) |
| 1820 | { |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1821 | int rc; |
| 1822 | unsigned long *flags = &CIFS_I(inode)->flags; |
| 1823 | |
NeilBrown | 7431620 | 2014-07-07 15:16:04 +1000 | [diff] [blame] | 1824 | rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable, |
| 1825 | TASK_KILLABLE); |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1826 | if (rc) |
| 1827 | return rc; |
| 1828 | |
| 1829 | if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) { |
| 1830 | rc = cifs_invalidate_mapping(inode); |
| 1831 | if (rc) |
| 1832 | set_bit(CIFS_INO_INVALID_MAPPING, flags); |
| 1833 | } |
| 1834 | |
| 1835 | clear_bit_unlock(CIFS_INO_LOCK, flags); |
Linus Torvalds | b1cce80 | 2014-06-09 19:08:43 -0700 | [diff] [blame] | 1836 | smp_mb__after_atomic(); |
Jeff Layton | 4f73c7d | 2014-04-30 09:31:47 -0400 | [diff] [blame] | 1837 | wake_up_bit(flags, CIFS_INO_LOCK); |
| 1838 | |
| 1839 | return rc; |
| 1840 | } |
| 1841 | |
| 1842 | int |
| 1843 | cifs_zap_mapping(struct inode *inode) |
| 1844 | { |
| 1845 | set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags); |
| 1846 | return cifs_revalidate_mapping(inode); |
Jeff Layton | e284e53 | 2014-04-30 09:31:46 -0400 | [diff] [blame] | 1847 | } |
| 1848 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1849 | int cifs_revalidate_file_attr(struct file *filp) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1850 | { |
| 1851 | int rc = 0; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1852 | struct inode *inode = file_inode(filp); |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1853 | struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1854 | |
| 1855 | if (!cifs_inode_needs_reval(inode)) |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1856 | return rc; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1857 | |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1858 | if (tlink_tcon(cfile->tlink)->unix_ext) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1859 | rc = cifs_get_file_info_unix(filp); |
| 1860 | else |
| 1861 | rc = cifs_get_file_info(filp); |
| 1862 | |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1863 | return rc; |
| 1864 | } |
| 1865 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1866 | int cifs_revalidate_dentry_attr(struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | { |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1868 | unsigned int xid; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1869 | int rc = 0; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1870 | struct inode *inode = d_inode(dentry); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1871 | struct super_block *sb = dentry->d_sb; |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1872 | char *full_path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1874 | if (inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | return -ENOENT; |
| 1876 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1877 | if (!cifs_inode_needs_reval(inode)) |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1878 | return rc; |
| 1879 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1880 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
| 1882 | /* can not safely grab the rename sem here if rename calls revalidate |
| 1883 | since that would deadlock */ |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1884 | full_path = build_path_from_dentry(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1886 | rc = -ENOMEM; |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1887 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | } |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1889 | |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 1890 | cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n", |
| 1891 | full_path, inode, inode->i_count.counter, |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 1892 | dentry, dentry->d_time, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 1894 | if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1895 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
| 1896 | else |
| 1897 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, |
| 1898 | xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1900 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | kfree(full_path); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 1902 | free_xid(xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | return rc; |
| 1904 | } |
| 1905 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1906 | int cifs_revalidate_file(struct file *filp) |
| 1907 | { |
| 1908 | int rc; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1909 | struct inode *inode = file_inode(filp); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1910 | |
| 1911 | rc = cifs_revalidate_file_attr(filp); |
| 1912 | if (rc) |
| 1913 | return rc; |
| 1914 | |
Jeff Layton | e284e53 | 2014-04-30 09:31:46 -0400 | [diff] [blame] | 1915 | return cifs_revalidate_mapping(inode); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1916 | } |
| 1917 | |
| 1918 | /* revalidate a dentry's inode attributes */ |
| 1919 | int cifs_revalidate_dentry(struct dentry *dentry) |
| 1920 | { |
| 1921 | int rc; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1922 | struct inode *inode = d_inode(dentry); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1923 | |
| 1924 | rc = cifs_revalidate_dentry_attr(dentry); |
| 1925 | if (rc) |
| 1926 | return rc; |
| 1927 | |
Jeff Layton | e284e53 | 2014-04-30 09:31:46 -0400 | [diff] [blame] | 1928 | return cifs_revalidate_mapping(inode); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1929 | } |
| 1930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
Jeff Layton | 1c45601 | 2010-10-12 11:32:42 -0400 | [diff] [blame] | 1932 | struct kstat *stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | { |
Jeff Layton | 3aa1c8c | 2010-10-07 14:46:28 -0400 | [diff] [blame] | 1934 | struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 1935 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1936 | struct inode *inode = d_inode(dentry); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1937 | int rc; |
Jeff Layton | 3aa1c8c | 2010-10-07 14:46:28 -0400 | [diff] [blame] | 1938 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1939 | /* |
| 1940 | * We need to be sure that all dirty pages are written and the server |
| 1941 | * has actual ctime, mtime and file length. |
| 1942 | */ |
Pavel Shilovsky | 18cceb6 | 2013-09-05 13:01:06 +0400 | [diff] [blame] | 1943 | if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping && |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1944 | inode->i_mapping->nrpages != 0) { |
| 1945 | rc = filemap_fdatawait(inode->i_mapping); |
Steve French | 156ecb2 | 2011-05-20 17:00:01 +0000 | [diff] [blame] | 1946 | if (rc) { |
| 1947 | mapping_set_error(inode->i_mapping, rc); |
| 1948 | return rc; |
| 1949 | } |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1950 | } |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1951 | |
| 1952 | rc = cifs_revalidate_dentry_attr(dentry); |
| 1953 | if (rc) |
| 1954 | return rc; |
| 1955 | |
| 1956 | generic_fillattr(inode, stat); |
| 1957 | stat->blksize = CIFS_MAX_MSGSIZE; |
| 1958 | stat->ino = CIFS_I(inode)->uniqueid; |
| 1959 | |
| 1960 | /* |
Jeff Layton | d3d1fce | 2012-11-25 08:00:40 -0500 | [diff] [blame] | 1961 | * If on a multiuser mount without unix extensions or cifsacl being |
| 1962 | * enabled, and the admin hasn't overridden them, set the ownership |
| 1963 | * to the fsuid/fsgid of the current process. |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1964 | */ |
| 1965 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) && |
Jeff Layton | d3d1fce | 2012-11-25 08:00:40 -0500 | [diff] [blame] | 1966 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1967 | !tcon->unix_ext) { |
| 1968 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) |
| 1969 | stat->uid = current_fsuid(); |
| 1970 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) |
| 1971 | stat->gid = current_fsgid(); |
| 1972 | } |
| 1973 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | } |
| 1975 | |
| 1976 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1977 | { |
| 1978 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1979 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1980 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | int rc = 0; |
| 1982 | |
| 1983 | page = grab_cache_page(mapping, index); |
| 1984 | if (!page) |
| 1985 | return -ENOMEM; |
| 1986 | |
Christoph Lameter | eebd2aa | 2008-02-04 22:28:29 -0800 | [diff] [blame] | 1987 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | unlock_page(page); |
| 1989 | page_cache_release(page); |
| 1990 | return rc; |
| 1991 | } |
| 1992 | |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 1993 | static void cifs_setsize(struct inode *inode, loff_t offset) |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1994 | { |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1995 | spin_lock(&inode->i_lock); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1996 | i_size_write(inode, offset); |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1997 | spin_unlock(&inode->i_lock); |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 1998 | |
Kirill A. Shutemov | 7caef26 | 2013-09-12 15:13:56 -0700 | [diff] [blame] | 1999 | truncate_pagecache(inode, offset); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 2000 | } |
| 2001 | |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2002 | static int |
| 2003 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2004 | unsigned int xid, char *full_path) |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2005 | { |
| 2006 | int rc; |
| 2007 | struct cifsFileInfo *open_file; |
| 2008 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 2009 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2010 | struct tcon_link *tlink = NULL; |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2011 | struct cifs_tcon *tcon = NULL; |
| 2012 | struct TCP_Server_Info *server; |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 2013 | struct cifs_io_parms io_parms; |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2014 | |
| 2015 | /* |
| 2016 | * To avoid spurious oplock breaks from server, in the case of |
| 2017 | * inodes that we already have open, avoid doing path based |
| 2018 | * setting of file size if we can do it by handle. |
| 2019 | * This keeps our caching token (oplock) and avoids timeouts |
| 2020 | * when the local oplock break takes longer to flush |
| 2021 | * writebehind data than the SMB timeout for the SetPathInfo |
| 2022 | * request would allow |
| 2023 | */ |
Jeff Layton | 6508d90 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2024 | open_file = find_writable_file(cifsInode, true); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2025 | if (open_file) { |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2026 | tcon = tlink_tcon(open_file->tlink); |
| 2027 | server = tcon->ses->server; |
| 2028 | if (server->ops->set_file_size) |
| 2029 | rc = server->ops->set_file_size(xid, tcon, open_file, |
| 2030 | attrs->ia_size, false); |
| 2031 | else |
| 2032 | rc = -ENOSYS; |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 2033 | cifsFileInfo_put(open_file); |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2034 | cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2035 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 2036 | unsigned int bytes_written; |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 2037 | |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2038 | io_parms.netfid = open_file->fid.netfid; |
| 2039 | io_parms.pid = open_file->pid; |
| 2040 | io_parms.tcon = tcon; |
Pavel Shilovsky | fa2989f | 2011-05-26 10:01:59 +0400 | [diff] [blame] | 2041 | io_parms.offset = 0; |
| 2042 | io_parms.length = attrs->ia_size; |
| 2043 | rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, |
| 2044 | NULL, NULL, 1); |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2045 | cifs_dbg(FYI, "Wrt seteof rc %d\n", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2046 | } |
| 2047 | } else |
| 2048 | rc = -EINVAL; |
| 2049 | |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2050 | if (!rc) |
| 2051 | goto set_size_out; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 2052 | |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2053 | if (tcon == NULL) { |
| 2054 | tlink = cifs_sb_tlink(cifs_sb); |
| 2055 | if (IS_ERR(tlink)) |
| 2056 | return PTR_ERR(tlink); |
| 2057 | tcon = tlink_tcon(tlink); |
| 2058 | server = tcon->ses->server; |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2059 | } |
| 2060 | |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2061 | /* |
| 2062 | * Set file size by pathname rather than by handle either because no |
| 2063 | * valid, writeable file handle for it was found or because there was |
| 2064 | * an error setting it by handle. |
| 2065 | */ |
| 2066 | if (server->ops->set_path_size) |
| 2067 | rc = server->ops->set_path_size(xid, tcon, full_path, |
| 2068 | attrs->ia_size, cifs_sb, false); |
| 2069 | else |
| 2070 | rc = -ENOSYS; |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2071 | cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc); |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2072 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 2073 | __u16 netfid; |
| 2074 | int oplock = 0; |
| 2075 | |
| 2076 | rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN, |
| 2077 | GENERIC_WRITE, CREATE_NOT_DIR, &netfid, |
| 2078 | &oplock, NULL, cifs_sb->local_nls, |
Steve French | 2baa268 | 2014-09-27 02:19:01 -0500 | [diff] [blame] | 2079 | cifs_remap(cifs_sb)); |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2080 | if (rc == 0) { |
| 2081 | unsigned int bytes_written; |
| 2082 | |
| 2083 | io_parms.netfid = netfid; |
| 2084 | io_parms.pid = current->tgid; |
| 2085 | io_parms.tcon = tcon; |
| 2086 | io_parms.offset = 0; |
| 2087 | io_parms.length = attrs->ia_size; |
| 2088 | rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL, |
| 2089 | NULL, 1); |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2090 | cifs_dbg(FYI, "wrt seteof rc %d\n", rc); |
Pavel Shilovsky | d143341 | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 2091 | CIFSSMBClose(xid, tcon, netfid); |
| 2092 | } |
| 2093 | } |
| 2094 | if (tlink) |
| 2095 | cifs_put_tlink(tlink); |
| 2096 | |
| 2097 | set_size_out: |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2098 | if (rc == 0) { |
Jeff Layton | fbec9ab | 2009-04-03 13:44:00 -0400 | [diff] [blame] | 2099 | cifsInode->server_eof = attrs->ia_size; |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 2100 | cifs_setsize(inode, attrs->ia_size); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2101 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
| 2102 | } |
| 2103 | |
| 2104 | return rc; |
| 2105 | } |
| 2106 | |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2107 | static int |
| 2108 | cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) |
| 2109 | { |
| 2110 | int rc; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2111 | unsigned int xid; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2112 | char *full_path = NULL; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 2113 | struct inode *inode = d_inode(direntry); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2114 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 2115 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2116 | struct tcon_link *tlink; |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2117 | struct cifs_tcon *pTcon; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2118 | struct cifs_unix_set_info_args *args = NULL; |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2119 | struct cifsFileInfo *open_file; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2120 | |
Al Viro | 35c265e | 2014-08-19 20:25:34 -0400 | [diff] [blame] | 2121 | cifs_dbg(FYI, "setattr_unix on file %pd attrs->ia_valid=0x%x\n", |
| 2122 | direntry, attrs->ia_valid); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2123 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2124 | xid = get_xid(); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2125 | |
Christoph Hellwig | db78b87 | 2010-06-04 11:30:03 +0200 | [diff] [blame] | 2126 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
| 2127 | attrs->ia_valid |= ATTR_FORCE; |
| 2128 | |
| 2129 | rc = inode_change_ok(inode, attrs); |
| 2130 | if (rc < 0) |
| 2131 | goto out; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2132 | |
| 2133 | full_path = build_path_from_dentry(direntry); |
| 2134 | if (full_path == NULL) { |
| 2135 | rc = -ENOMEM; |
| 2136 | goto out; |
| 2137 | } |
| 2138 | |
Jeff Layton | 0f4d634 | 2009-03-26 13:35:37 -0400 | [diff] [blame] | 2139 | /* |
| 2140 | * Attempt to flush data before changing attributes. We need to do |
| 2141 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the |
| 2142 | * ownership or mode then we may also need to do this. Here, we take |
| 2143 | * the safe way out and just do the flush on all setattr requests. If |
| 2144 | * the flush returns error, store it to report later and continue. |
| 2145 | * |
| 2146 | * BB: This should be smarter. Why bother flushing pages that |
| 2147 | * will be truncated anyway? Also, should we error out here if |
| 2148 | * the flush returns error? |
| 2149 | */ |
| 2150 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | eb4b756 | 2010-10-22 14:52:29 -0400 | [diff] [blame] | 2151 | mapping_set_error(inode->i_mapping, rc); |
| 2152 | rc = 0; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2153 | |
| 2154 | if (attrs->ia_valid & ATTR_SIZE) { |
| 2155 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
| 2156 | if (rc != 0) |
| 2157 | goto out; |
| 2158 | } |
| 2159 | |
| 2160 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 2161 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 2162 | attrs->ia_valid &= ~ATTR_MODE; |
| 2163 | |
| 2164 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
| 2165 | if (args == NULL) { |
| 2166 | rc = -ENOMEM; |
| 2167 | goto out; |
| 2168 | } |
| 2169 | |
| 2170 | /* set up the struct */ |
| 2171 | if (attrs->ia_valid & ATTR_MODE) |
| 2172 | args->mode = attrs->ia_mode; |
| 2173 | else |
| 2174 | args->mode = NO_CHANGE_64; |
| 2175 | |
| 2176 | if (attrs->ia_valid & ATTR_UID) |
| 2177 | args->uid = attrs->ia_uid; |
| 2178 | else |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 2179 | args->uid = INVALID_UID; /* no change */ |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2180 | |
| 2181 | if (attrs->ia_valid & ATTR_GID) |
| 2182 | args->gid = attrs->ia_gid; |
| 2183 | else |
Eric W. Biederman | 49418b2 | 2013-02-06 00:57:56 -0800 | [diff] [blame] | 2184 | args->gid = INVALID_GID; /* no change */ |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2185 | |
| 2186 | if (attrs->ia_valid & ATTR_ATIME) |
| 2187 | args->atime = cifs_UnixTimeToNT(attrs->ia_atime); |
| 2188 | else |
| 2189 | args->atime = NO_CHANGE_64; |
| 2190 | |
| 2191 | if (attrs->ia_valid & ATTR_MTIME) |
| 2192 | args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime); |
| 2193 | else |
| 2194 | args->mtime = NO_CHANGE_64; |
| 2195 | |
| 2196 | if (attrs->ia_valid & ATTR_CTIME) |
| 2197 | args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime); |
| 2198 | else |
| 2199 | args->ctime = NO_CHANGE_64; |
| 2200 | |
| 2201 | args->device = 0; |
Jeff Layton | 6508d90 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2202 | open_file = find_writable_file(cifsInode, true); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2203 | if (open_file) { |
Pavel Shilovsky | 4b4de76 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 2204 | u16 nfid = open_file->fid.netfid; |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2205 | u32 npid = open_file->pid; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2206 | pTcon = tlink_tcon(open_file->tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2207 | rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid); |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 2208 | cifsFileInfo_put(open_file); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2209 | } else { |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2210 | tlink = cifs_sb_tlink(cifs_sb); |
| 2211 | if (IS_ERR(tlink)) { |
| 2212 | rc = PTR_ERR(tlink); |
| 2213 | goto out; |
| 2214 | } |
| 2215 | pTcon = tlink_tcon(tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2216 | rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args, |
Jeff Layton | 01ea95e | 2009-07-09 20:02:49 -0400 | [diff] [blame] | 2217 | cifs_sb->local_nls, |
| 2218 | cifs_sb->mnt_cifs_flags & |
| 2219 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2220 | cifs_put_tlink(tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2221 | } |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2222 | |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2223 | if (rc) |
| 2224 | goto out; |
Steve French | ccd4bb1 | 2010-02-08 17:39:58 +0000 | [diff] [blame] | 2225 | |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2226 | if ((attrs->ia_valid & ATTR_SIZE) && |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 2227 | attrs->ia_size != i_size_read(inode)) |
| 2228 | truncate_setsize(inode, attrs->ia_size); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2229 | |
| 2230 | setattr_copy(inode, attrs); |
| 2231 | mark_inode_dirty(inode); |
| 2232 | |
| 2233 | /* force revalidate when any of these times are set since some |
| 2234 | of the fs types (eg ext3, fat) do not have fine enough |
| 2235 | time granularity to match protocol, and we do not have a |
| 2236 | a way (yet) to query the server fs's time granularity (and |
| 2237 | whether it rounds times down). |
| 2238 | */ |
| 2239 | if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)) |
| 2240 | cifsInode->time = 0; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2241 | out: |
| 2242 | kfree(args); |
| 2243 | kfree(full_path); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2244 | free_xid(xid); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2245 | return rc; |
| 2246 | } |
| 2247 | |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2248 | static int |
| 2249 | cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | { |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2251 | unsigned int xid; |
Eric W. Biederman | 8abf277 | 2013-02-06 00:33:17 -0800 | [diff] [blame] | 2252 | kuid_t uid = INVALID_UID; |
| 2253 | kgid_t gid = INVALID_GID; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 2254 | struct inode *inode = d_inode(direntry); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2255 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2256 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | char *full_path = NULL; |
| 2258 | int rc = -EACCES; |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2259 | __u32 dosattr = 0; |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2260 | __u64 mode = NO_CHANGE_64; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2261 | |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2262 | xid = get_xid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | |
Al Viro | 35c265e | 2014-08-19 20:25:34 -0400 | [diff] [blame] | 2264 | cifs_dbg(FYI, "setattr on file %pd attrs->iavalid 0x%x\n", |
| 2265 | direntry, attrs->ia_valid); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 2266 | |
Christoph Hellwig | db78b87 | 2010-06-04 11:30:03 +0200 | [diff] [blame] | 2267 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
| 2268 | attrs->ia_valid |= ATTR_FORCE; |
| 2269 | |
| 2270 | rc = inode_change_ok(inode, attrs); |
| 2271 | if (rc < 0) { |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2272 | free_xid(xid); |
Christoph Hellwig | db78b87 | 2010-06-04 11:30:03 +0200 | [diff] [blame] | 2273 | return rc; |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 2274 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2275 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 2276 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2277 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 2278 | rc = -ENOMEM; |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2279 | free_xid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 2280 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
Jeff Layton | 0f4d634 | 2009-03-26 13:35:37 -0400 | [diff] [blame] | 2283 | /* |
| 2284 | * Attempt to flush data before changing attributes. We need to do |
| 2285 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the |
| 2286 | * ownership or mode then we may also need to do this. Here, we take |
| 2287 | * the safe way out and just do the flush on all setattr requests. If |
| 2288 | * the flush returns error, store it to report later and continue. |
| 2289 | * |
| 2290 | * BB: This should be smarter. Why bother flushing pages that |
| 2291 | * will be truncated anyway? Also, should we error out here if |
| 2292 | * the flush returns error? |
| 2293 | */ |
| 2294 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | eb4b756 | 2010-10-22 14:52:29 -0400 | [diff] [blame] | 2295 | mapping_set_error(inode->i_mapping, rc); |
| 2296 | rc = 0; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 2297 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 2298 | if (attrs->ia_valid & ATTR_SIZE) { |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2299 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
| 2300 | if (rc != 0) |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2301 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | } |
Jeff Layton | 4ca691a | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2303 | |
Shirish Pargaonkar | a5ff376 | 2011-10-13 10:26:03 -0500 | [diff] [blame] | 2304 | if (attrs->ia_valid & ATTR_UID) |
| 2305 | uid = attrs->ia_uid; |
| 2306 | |
| 2307 | if (attrs->ia_valid & ATTR_GID) |
| 2308 | gid = attrs->ia_gid; |
| 2309 | |
| 2310 | #ifdef CONFIG_CIFS_ACL |
| 2311 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
Eric W. Biederman | 8abf277 | 2013-02-06 00:33:17 -0800 | [diff] [blame] | 2312 | if (uid_valid(uid) || gid_valid(gid)) { |
Shirish Pargaonkar | a5ff376 | 2011-10-13 10:26:03 -0500 | [diff] [blame] | 2313 | rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64, |
| 2314 | uid, gid); |
| 2315 | if (rc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2316 | cifs_dbg(FYI, "%s: Setting id failed with error: %d\n", |
| 2317 | __func__, rc); |
Shirish Pargaonkar | a5ff376 | 2011-10-13 10:26:03 -0500 | [diff] [blame] | 2318 | goto cifs_setattr_exit; |
| 2319 | } |
| 2320 | } |
| 2321 | } else |
| 2322 | #endif /* CONFIG_CIFS_ACL */ |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2323 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) |
Jeff Layton | 4ca691a | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2324 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | |
Jeff Layton | d32c4f2 | 2007-10-18 03:05:22 -0700 | [diff] [blame] | 2326 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 2327 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 2328 | attrs->ia_valid &= ~ATTR_MODE; |
| 2329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2330 | if (attrs->ia_valid & ATTR_MODE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | mode = attrs->ia_mode; |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 2332 | rc = 0; |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 2333 | #ifdef CONFIG_CIFS_ACL |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 2334 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
Shirish Pargaonkar | a5ff376 | 2011-10-13 10:26:03 -0500 | [diff] [blame] | 2335 | rc = id_mode_to_cifs_acl(inode, full_path, mode, |
Eric W. Biederman | 8abf277 | 2013-02-06 00:33:17 -0800 | [diff] [blame] | 2336 | INVALID_UID, INVALID_GID); |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 2337 | if (rc) { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2338 | cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n", |
| 2339 | __func__, rc); |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 2340 | goto cifs_setattr_exit; |
| 2341 | } |
| 2342 | } else |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 2343 | #endif /* CONFIG_CIFS_ACL */ |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2344 | if (((mode & S_IWUGO) == 0) && |
| 2345 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2346 | |
| 2347 | dosattr = cifsInode->cifsAttrs | ATTR_READONLY; |
| 2348 | |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2349 | /* fix up mode if we're not using dynperm */ |
| 2350 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) |
| 2351 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; |
| 2352 | } else if ((mode & S_IWUGO) && |
| 2353 | (cifsInode->cifsAttrs & ATTR_READONLY)) { |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2354 | |
| 2355 | dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; |
| 2356 | /* Attributes of 0 are ignored */ |
| 2357 | if (dosattr == 0) |
| 2358 | dosattr |= ATTR_NORMAL; |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2359 | |
| 2360 | /* reset local inode permissions to normal */ |
| 2361 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 2362 | attrs->ia_mode &= ~(S_IALLUGO); |
| 2363 | if (S_ISDIR(inode->i_mode)) |
| 2364 | attrs->ia_mode |= |
| 2365 | cifs_sb->mnt_dir_mode; |
| 2366 | else |
| 2367 | attrs->ia_mode |= |
| 2368 | cifs_sb->mnt_file_mode; |
| 2369 | } |
| 2370 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 2371 | /* ignore mode change - ATTR_READONLY hasn't changed */ |
| 2372 | attrs->ia_valid &= ~ATTR_MODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2373 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | } |
| 2375 | |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2376 | if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) || |
| 2377 | ((attrs->ia_valid & ATTR_MODE) && dosattr)) { |
| 2378 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); |
| 2379 | /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2381 | /* Even if error on time set, no sense failing the call if |
| 2382 | the server would set the time to a reasonable value anyway, |
| 2383 | and this check ensures that we are not being called from |
| 2384 | sys_utimes in which case we ought to fail the call back to |
| 2385 | the user when the server rejects the call */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2386 | if ((rc) && (attrs->ia_valid & |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2387 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2388 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | } |
| 2390 | |
| 2391 | /* do not need local check to inode_check_ok since the server does |
| 2392 | that */ |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2393 | if (rc) |
| 2394 | goto cifs_setattr_exit; |
| 2395 | |
| 2396 | if ((attrs->ia_valid & ATTR_SIZE) && |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 2397 | attrs->ia_size != i_size_read(inode)) |
| 2398 | truncate_setsize(inode, attrs->ia_size); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2399 | |
| 2400 | setattr_copy(inode, attrs); |
| 2401 | mark_inode_dirty(inode); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2402 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2403 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | kfree(full_path); |
Pavel Shilovsky | 6d5786a | 2012-06-20 11:21:16 +0400 | [diff] [blame] | 2405 | free_xid(xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | return rc; |
| 2407 | } |
| 2408 | |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2409 | int |
| 2410 | cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 2411 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 2412 | struct inode *inode = d_inode(direntry); |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2413 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Steve French | 96daf2b | 2011-05-27 04:34:02 +0000 | [diff] [blame] | 2414 | struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2415 | |
| 2416 | if (pTcon->unix_ext) |
| 2417 | return cifs_setattr_unix(direntry, attrs); |
| 2418 | |
| 2419 | return cifs_setattr_nounix(direntry, attrs); |
| 2420 | |
| 2421 | /* BB: add cifs_setattr_legacy for really old servers */ |
| 2422 | } |
| 2423 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 2424 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2425 | void cifs_delete_inode(struct inode *inode) |
| 2426 | { |
Joe Perches | f96637b | 2013-05-04 22:12:25 -0500 | [diff] [blame] | 2427 | cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | /* may have to add back in if and when safe distributed caching of |
| 2429 | directories added e.g. via FindNotify */ |
| 2430 | } |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 2431 | #endif |