Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/dir.c |
| 3 | * |
| 4 | * vfs operations that deal with dentries |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 5 | * |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 6 | * Copyright (C) International Business Machines Corp., 2002,2007 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Lesser General Public License as published |
| 11 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public License |
| 20 | * along with this library; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | #include <linux/fs.h> |
| 24 | #include <linux/stat.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/namei.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" |
| 33 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 34 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | renew_parental_timestamps(struct dentry *direntry) |
| 36 | { |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 37 | /* BB check if there is a way to get the kernel to do this or if we |
| 38 | really need this */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | do { |
| 40 | direntry->d_time = jiffies; |
| 41 | direntry = direntry->d_parent; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 42 | } while (!IS_ROOT(direntry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | /* Note: caller must free return buffer */ |
| 46 | char * |
| 47 | build_path_from_dentry(struct dentry *direntry) |
| 48 | { |
| 49 | struct dentry *temp; |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 50 | int namelen; |
| 51 | int pplen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | char *full_path; |
Steve French | 8827481 | 2006-03-09 22:21:45 +0000 | [diff] [blame] | 53 | char dirsep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 55 | if (direntry == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | return NULL; /* not much we can do if dentry is freed and |
| 57 | we need to reopen the file after it was closed implicitly |
| 58 | when the server crashed */ |
| 59 | |
Steve French | 8827481 | 2006-03-09 22:21:45 +0000 | [diff] [blame] | 60 | dirsep = CIFS_DIR_SEP(CIFS_SB(direntry->d_sb)); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 61 | pplen = CIFS_SB(direntry->d_sb)->prepathlen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | cifs_bp_rename_retry: |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 63 | namelen = pplen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | for (temp = direntry; !IS_ROOT(temp);) { |
| 65 | namelen += (1 + temp->d_name.len); |
| 66 | temp = temp->d_parent; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 67 | if (temp == NULL) { |
| 68 | cERROR(1, ("corrupt dentry")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | return NULL; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | full_path = kmalloc(namelen+1, GFP_KERNEL); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 74 | if (full_path == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | return full_path; |
| 76 | full_path[namelen] = 0; /* trailing null */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | for (temp = direntry; !IS_ROOT(temp);) { |
| 78 | namelen -= 1 + temp->d_name.len; |
| 79 | if (namelen < 0) { |
| 80 | break; |
| 81 | } else { |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 82 | full_path[namelen] = dirsep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | strncpy(full_path + namelen + 1, temp->d_name.name, |
| 84 | temp->d_name.len); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 85 | cFYI(0, ("name: %s", full_path + namelen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | } |
| 87 | temp = temp->d_parent; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 88 | if (temp == NULL) { |
| 89 | cERROR(1, ("corrupt dentry")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | kfree(full_path); |
| 91 | return NULL; |
| 92 | } |
| 93 | } |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 94 | if (namelen != pplen) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | cERROR(1, |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 96 | ("did not end path lookup where expected namelen is %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | namelen)); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 98 | /* presumably this is only possible if racing with a rename |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | of one of the parent directories (we can not lock the dentries |
| 100 | above us to prevent this, but retrying should be harmless) */ |
| 101 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | goto cifs_bp_rename_retry; |
| 103 | } |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 104 | /* DIR_SEP already set for byte 0 / vs \ but not for |
| 105 | subsequent slashes in prepath which currently must |
| 106 | be entered the right way - not sure if there is an alternative |
| 107 | since the '\' is a valid posix character so we can not switch |
| 108 | those safely to '/' if any are found in the middle of the prepath */ |
| 109 | /* BB test paths to Windows with '/' in the midst of prepath */ |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 110 | strncpy(full_path, CIFS_SB(direntry->d_sb)->prepath, pplen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | return full_path; |
| 112 | } |
| 113 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 114 | /* char * build_wildcard_path_from_dentry(struct dentry *direntry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | if(full_path == NULL) |
| 117 | return full_path; |
| 118 | |
| 119 | full_path[namelen] = '\\'; |
| 120 | full_path[namelen+1] = '*'; |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 121 | full_path[namelen+2] = 0; |
| 122 | BB remove above eight lines BB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Steve French | 3979877 | 2006-05-31 22:40:51 +0000 | [diff] [blame] | 124 | /* Inode operations in similar order to how they appear in Linux file fs.h */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | int |
| 127 | cifs_create(struct inode *inode, struct dentry *direntry, int mode, |
| 128 | struct nameidata *nd) |
| 129 | { |
| 130 | int rc = -ENOENT; |
| 131 | int xid; |
| 132 | int oplock = 0; |
| 133 | int desiredAccess = GENERIC_READ | GENERIC_WRITE; |
| 134 | __u16 fileHandle; |
| 135 | struct cifs_sb_info *cifs_sb; |
| 136 | struct cifsTconInfo *pTcon; |
| 137 | char *full_path = NULL; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 138 | FILE_ALL_INFO *buf = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | struct inode *newinode = NULL; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 140 | struct cifsFileInfo *pCifsFile = NULL; |
| 141 | struct cifsInodeInfo *pCifsInode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | int disposition = FILE_OVERWRITE_IF; |
| 143 | int write_only = FALSE; |
| 144 | |
| 145 | xid = GetXid(); |
| 146 | |
| 147 | cifs_sb = CIFS_SB(inode->i_sb); |
| 148 | pTcon = cifs_sb->tcon; |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | full_path = build_path_from_dentry(direntry); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 151 | if (full_path == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | FreeXid(xid); |
| 153 | return -ENOMEM; |
| 154 | } |
| 155 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 156 | if (nd && (nd->flags & LOOKUP_OPEN)) { |
Miklos Szeredi | e08fc04 | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 157 | int oflags = nd->intent.open.flags; |
| 158 | |
| 159 | desiredAccess = 0; |
| 160 | if (oflags & FMODE_READ) |
| 161 | desiredAccess |= GENERIC_READ; |
| 162 | if (oflags & FMODE_WRITE) { |
| 163 | desiredAccess |= GENERIC_WRITE; |
| 164 | if (!(oflags & FMODE_READ)) |
| 165 | write_only = TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 168 | if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | disposition = FILE_CREATE; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 170 | else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | disposition = FILE_OVERWRITE_IF; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 172 | else if ((oflags & O_CREAT) == O_CREAT) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | disposition = FILE_OPEN_IF; |
| 174 | else { |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 175 | cFYI(1, ("Create flag not set in create function")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | } |
| 178 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 179 | /* BB add processing to set equivalent of mode - e.g. via CreateX with |
| 180 | ACLs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (oplockEnabled) |
| 182 | oplock = REQ_OPLOCK; |
| 183 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 184 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
| 185 | if (buf == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | kfree(full_path); |
| 187 | FreeXid(xid); |
| 188 | return -ENOMEM; |
| 189 | } |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 190 | if (cifs_sb->tcon->ses->capabilities & CAP_NT_SMBS) |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 191 | rc = CIFSSMBOpen(xid, pTcon, full_path, disposition, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | desiredAccess, CREATE_NOT_DIR, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 193 | &fileHandle, &oplock, buf, cifs_sb->local_nls, |
| 194 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 195 | else |
| 196 | rc = -EIO; /* no NT SMB support fall into legacy open below */ |
| 197 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 198 | if (rc == -EIO) { |
Steve French | a9d02ad | 2005-08-24 23:06:05 -0700 | [diff] [blame] | 199 | /* old server, retry the open legacy style */ |
| 200 | rc = SMBLegacyOpen(xid, pTcon, full_path, disposition, |
| 201 | desiredAccess, CREATE_NOT_DIR, |
| 202 | &fileHandle, &oplock, buf, cifs_sb->local_nls, |
| 203 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 204 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | if (rc) { |
Steve French | 26a21b9 | 2006-05-31 18:05:34 +0000 | [diff] [blame] | 206 | cFYI(1, ("cifs_create returned 0x%x", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } else { |
| 208 | /* If Open reported that we actually created a file |
| 209 | then we now have to set the mode if possible */ |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 210 | if ((pTcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) { |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 211 | mode &= ~current->fs->umask; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 212 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, |
Steve French | 8345187 | 2005-12-01 17:12:59 -0800 | [diff] [blame] | 214 | (__u64)current->fsuid, |
| 215 | (__u64)current->fsgid, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | 0 /* dev */, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 217 | cifs_sb->local_nls, |
| 218 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 219 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } else { |
| 221 | CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, |
| 222 | (__u64)-1, |
| 223 | (__u64)-1, |
| 224 | 0 /* dev */, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 225 | cifs_sb->local_nls, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 226 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 227 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 229 | } else { |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 230 | /* BB implement mode setting via Windows security |
| 231 | descriptors e.g. */ |
| 232 | /* CIFSSMBWinSetPerms(xid,pTcon,path,mode,-1,-1,nls);*/ |
| 233 | |
| 234 | /* Could set r/o dos attribute if mode & 0222 == 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | } |
| 236 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 237 | /* server might mask mode so we have to query for it */ |
| 238 | if (pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 240 | inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | else { |
| 242 | rc = cifs_get_inode_info(&newinode, full_path, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 243 | buf, inode->i_sb, xid); |
| 244 | if (newinode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | newinode->i_mode = mode; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 246 | if ((oplock & CIFS_CREATE_ACTION) && |
| 247 | (cifs_sb->mnt_cifs_flags & |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 248 | CIFS_MOUNT_SET_UID)) { |
| 249 | newinode->i_uid = current->fsuid; |
| 250 | newinode->i_gid = current->fsgid; |
| 251 | } |
| 252 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | if (rc != 0) { |
Steve French | 4a6d87f | 2005-08-13 08:15:54 -0700 | [diff] [blame] | 256 | cFYI(1, |
| 257 | ("Create worked but get_inode_info failed rc = %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | rc)); |
| 259 | } else { |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 260 | if (pTcon->nocase) |
| 261 | direntry->d_op = &cifs_ci_dentry_ops; |
| 262 | else |
| 263 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | d_instantiate(direntry, newinode); |
| 265 | } |
Steve French | 7521a3c | 2007-07-11 18:30:34 +0000 | [diff] [blame] | 266 | if ((nd == NULL /* nfsd case - nfs srv does not set nd */) || |
| 267 | ((nd->flags & LOOKUP_OPEN) == FALSE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | /* mknod case - do not leave file open */ |
| 269 | CIFSSMBClose(xid, pTcon, fileHandle); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 270 | } else if (newinode) { |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 271 | pCifsFile = |
Steve French | 92ad9b9 | 2007-09-29 05:21:58 +0000 | [diff] [blame] | 272 | kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL); |
Steve French | 221601c | 2007-06-05 20:35:06 +0000 | [diff] [blame] | 273 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 274 | if (pCifsFile == NULL) |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 275 | goto cifs_create_out; |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 276 | pCifsFile->netfid = fileHandle; |
| 277 | pCifsFile->pid = current->tgid; |
| 278 | pCifsFile->pInode = newinode; |
| 279 | pCifsFile->invalidHandle = FALSE; |
| 280 | pCifsFile->closePend = FALSE; |
| 281 | init_MUTEX(&pCifsFile->fh_sem); |
Roland Dreier | 796e566 | 2007-05-03 04:33:45 +0000 | [diff] [blame] | 282 | mutex_init(&pCifsFile->lock_mutex); |
Steve French | e466e48 | 2006-08-15 13:07:18 +0000 | [diff] [blame] | 283 | INIT_LIST_HEAD(&pCifsFile->llist); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 284 | atomic_set(&pCifsFile->wrtPending, 0); |
Steve French | e466e48 | 2006-08-15 13:07:18 +0000 | [diff] [blame] | 285 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 286 | /* set the following in open now |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 287 | pCifsFile->pfile = file; */ |
| 288 | write_lock(&GlobalSMBSeslock); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 289 | list_add(&pCifsFile->tlist, &pTcon->openFileList); |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 290 | pCifsInode = CIFS_I(newinode); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 291 | if (pCifsInode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | /* if readable file instance put first in list*/ |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 293 | if (write_only == TRUE) { |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 294 | list_add_tail(&pCifsFile->flist, |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 295 | &pCifsInode->openFileList); |
| 296 | } else { |
| 297 | list_add(&pCifsFile->flist, |
| 298 | &pCifsInode->openFileList); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | } |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 300 | if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) { |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 301 | pCifsInode->clientCanCacheAll = TRUE; |
| 302 | pCifsInode->clientCanCacheRead = TRUE; |
Steve French | 221601c | 2007-06-05 20:35:06 +0000 | [diff] [blame] | 303 | cFYI(1, ("Exclusive Oplock inode %p", |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 304 | newinode)); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 305 | } else if ((oplock & 0xF) == OPLOCK_READ) |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 306 | pCifsInode->clientCanCacheRead = TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | } |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 308 | write_unlock(&GlobalSMBSeslock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | } |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 310 | } |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 311 | cifs_create_out: |
| 312 | kfree(buf); |
| 313 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | FreeXid(xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | return rc; |
| 316 | } |
| 317 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 318 | int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, |
| 319 | dev_t device_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
| 321 | int rc = -EPERM; |
| 322 | int xid; |
| 323 | struct cifs_sb_info *cifs_sb; |
| 324 | struct cifsTconInfo *pTcon; |
| 325 | char *full_path = NULL; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 326 | struct inode *newinode = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
| 328 | if (!old_valid_dev(device_number)) |
| 329 | return -EINVAL; |
| 330 | |
| 331 | xid = GetXid(); |
| 332 | |
| 333 | cifs_sb = CIFS_SB(inode->i_sb); |
| 334 | pTcon = cifs_sb->tcon; |
| 335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | full_path = build_path_from_dentry(direntry); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 337 | if (full_path == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | rc = -ENOMEM; |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 339 | else if (pTcon->unix_ext) { |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 340 | mode &= ~current->fs->umask; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 341 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 343 | mode, (__u64)current->fsuid, |
| 344 | (__u64)current->fsgid, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 345 | device_number, cifs_sb->local_nls, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 346 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 347 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } else { |
| 349 | rc = CIFSSMBUnixSetPerms(xid, pTcon, |
| 350 | full_path, mode, (__u64)-1, (__u64)-1, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 351 | device_number, cifs_sb->local_nls, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 352 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 353 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 356 | if (!rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 358 | inode->i_sb, xid); |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 359 | if (pTcon->nocase) |
| 360 | direntry->d_op = &cifs_ci_dentry_ops; |
| 361 | else |
| 362 | direntry->d_op = &cifs_dentry_ops; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 363 | if (rc == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | d_instantiate(direntry, newinode); |
| 365 | } |
Steve French | d7245c2 | 2005-07-14 18:25:12 -0500 | [diff] [blame] | 366 | } else { |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 367 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 368 | int oplock = 0; |
| 369 | u16 fileHandle; |
| 370 | FILE_ALL_INFO * buf; |
Steve French | d7245c2 | 2005-07-14 18:25:12 -0500 | [diff] [blame] | 371 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 372 | cFYI(1, ("sfu compat create special file")); |
Steve French | d7245c2 | 2005-07-14 18:25:12 -0500 | [diff] [blame] | 373 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 374 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
| 375 | if (buf == NULL) { |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 376 | kfree(full_path); |
| 377 | FreeXid(xid); |
| 378 | return -ENOMEM; |
| 379 | } |
| 380 | |
| 381 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 382 | FILE_CREATE, /* fail if exists */ |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 383 | GENERIC_WRITE /* BB would |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 384 | WRITE_OWNER | WRITE_DAC be better? */, |
| 385 | /* Create a file and set the |
| 386 | file attribute to SYSTEM */ |
| 387 | CREATE_NOT_DIR | CREATE_OPTION_SPECIAL, |
| 388 | &fileHandle, &oplock, buf, |
| 389 | cifs_sb->local_nls, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 390 | cifs_sb->mnt_cifs_flags & |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 391 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 392 | |
Steve French | 5bafd76 | 2006-06-07 00:18:43 +0000 | [diff] [blame] | 393 | /* BB FIXME - add handling for backlevel servers |
| 394 | which need legacy open and check for all |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 395 | calls to SMBOpen for fallback to SMBLeagcyOpen */ |
| 396 | if (!rc) { |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 397 | /* BB Do not bother to decode buf since no |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 398 | local inode yet to put timestamps in, |
| 399 | but we can reuse it safely */ |
Steve French | 77159b4 | 2007-08-31 01:10:17 +0000 | [diff] [blame] | 400 | unsigned int bytes_written; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 401 | struct win_dev *pdev; |
| 402 | pdev = (struct win_dev *)buf; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 403 | if (S_ISCHR(mode)) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 404 | memcpy(pdev->type, "IntxCHR", 8); |
| 405 | pdev->major = |
| 406 | cpu_to_le64(MAJOR(device_number)); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 407 | pdev->minor = |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 408 | cpu_to_le64(MINOR(device_number)); |
| 409 | rc = CIFSSMBWrite(xid, pTcon, |
| 410 | fileHandle, |
| 411 | sizeof(struct win_dev), |
| 412 | 0, &bytes_written, (char *)pdev, |
| 413 | NULL, 0); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 414 | } else if (S_ISBLK(mode)) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 415 | memcpy(pdev->type, "IntxBLK", 8); |
| 416 | pdev->major = |
| 417 | cpu_to_le64(MAJOR(device_number)); |
| 418 | pdev->minor = |
| 419 | cpu_to_le64(MINOR(device_number)); |
| 420 | rc = CIFSSMBWrite(xid, pTcon, |
| 421 | fileHandle, |
| 422 | sizeof(struct win_dev), |
| 423 | 0, &bytes_written, (char *)pdev, |
| 424 | NULL, 0); |
| 425 | } /* else if(S_ISFIFO */ |
Steve French | eda3c029 | 2005-07-21 15:20:28 -0700 | [diff] [blame] | 426 | CIFSSMBClose(xid, pTcon, fileHandle); |
| 427 | d_drop(direntry); |
| 428 | } |
| 429 | kfree(buf); |
Steve French | d7245c2 | 2005-07-14 18:25:12 -0500 | [diff] [blame] | 430 | /* add code here to set EAs */ |
| 431 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | } |
| 433 | |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 434 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | FreeXid(xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | return rc; |
| 437 | } |
| 438 | |
| 439 | |
| 440 | struct dentry * |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 441 | cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, |
| 442 | struct nameidata *nd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | { |
| 444 | int xid; |
| 445 | int rc = 0; /* to get around spurious gcc warning, set to zero here */ |
| 446 | struct cifs_sb_info *cifs_sb; |
| 447 | struct cifsTconInfo *pTcon; |
| 448 | struct inode *newInode = NULL; |
| 449 | char *full_path = NULL; |
| 450 | |
| 451 | xid = GetXid(); |
| 452 | |
Steve French | 92ad9b9 | 2007-09-29 05:21:58 +0000 | [diff] [blame] | 453 | cFYI(1, (" parent inode = 0x%p name is: %s and dentry = 0x%p", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | parent_dir_inode, direntry->d_name.name, direntry)); |
| 455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | /* check whether path exists */ |
| 457 | |
| 458 | cifs_sb = CIFS_SB(parent_dir_inode->i_sb); |
| 459 | pTcon = cifs_sb->tcon; |
| 460 | |
Steve French | 296034f | 2006-04-21 18:18:37 +0000 | [diff] [blame] | 461 | /* |
| 462 | * Don't allow the separator character in a path component. |
| 463 | * The VFS will not allow "/", but "\" is allowed by posix. |
| 464 | */ |
| 465 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) { |
| 466 | int i; |
| 467 | for (i = 0; i < direntry->d_name.len; i++) |
| 468 | if (direntry->d_name.name[i] == '\\') { |
| 469 | cFYI(1, ("Invalid file name")); |
| 470 | FreeXid(xid); |
| 471 | return ERR_PTR(-EINVAL); |
| 472 | } |
| 473 | } |
| 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | /* can not grab the rename sem here since it would |
| 476 | deadlock in the cases (beginning of sys_rename itself) |
| 477 | in which we already have the sb rename sem */ |
| 478 | full_path = build_path_from_dentry(direntry); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 479 | if (full_path == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | FreeXid(xid); |
| 481 | return ERR_PTR(-ENOMEM); |
| 482 | } |
| 483 | |
| 484 | if (direntry->d_inode != NULL) { |
| 485 | cFYI(1, (" non-NULL inode in lookup")); |
| 486 | } else { |
| 487 | cFYI(1, (" NULL inode in lookup")); |
| 488 | } |
| 489 | cFYI(1, |
| 490 | (" Full path: %s inode = 0x%p", full_path, direntry->d_inode)); |
| 491 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 492 | if (pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | rc = cifs_get_inode_info_unix(&newInode, full_path, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 494 | parent_dir_inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | else |
| 496 | rc = cifs_get_inode_info(&newInode, full_path, NULL, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 497 | parent_dir_inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | if ((rc == 0) && (newInode != NULL)) { |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 500 | if (pTcon->nocase) |
| 501 | direntry->d_op = &cifs_ci_dentry_ops; |
| 502 | else |
| 503 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | d_add(direntry, newInode); |
| 505 | |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 506 | /* since paths are not looked up by component - the parent |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 507 | directories are presumed to be good here */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | renew_parental_timestamps(direntry); |
| 509 | |
| 510 | } else if (rc == -ENOENT) { |
| 511 | rc = 0; |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 512 | direntry->d_time = jiffies; |
| 513 | if (pTcon->nocase) |
| 514 | direntry->d_op = &cifs_ci_dentry_ops; |
| 515 | else |
| 516 | direntry->d_op = &cifs_dentry_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | d_add(direntry, NULL); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 518 | /* if it was once a directory (but how can we tell?) we could do |
| 519 | shrink_dcache_parent(direntry); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | } else { |
Steve French | 221601c | 2007-06-05 20:35:06 +0000 | [diff] [blame] | 521 | cERROR(1, ("Error 0x%x on cifs_get_inode_info in lookup of %s", |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 522 | rc, full_path)); |
| 523 | /* BB special case check for Access Denied - watch security |
| 524 | exposure of returning dir info implicitly via different rc |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | if file exists or not but no access BB */ |
| 526 | } |
| 527 | |
Steve French | d14537f1 | 2005-04-28 22:41:05 -0700 | [diff] [blame] | 528 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | FreeXid(xid); |
| 530 | return ERR_PTR(rc); |
| 531 | } |
| 532 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | static int |
| 534 | cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd) |
| 535 | { |
| 536 | int isValid = 1; |
| 537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | if (direntry->d_inode) { |
| 539 | if (cifs_revalidate(direntry)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | return 0; |
| 541 | } |
| 542 | } else { |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 543 | cFYI(1, ("neg dentry 0x%p name = %s", |
| 544 | direntry, direntry->d_name.name)); |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 545 | if (time_after(jiffies, direntry->d_time + HZ) || |
Steve French | 3abb927 | 2005-11-28 08:16:13 -0800 | [diff] [blame] | 546 | !lookupCacheEnabled) { |
| 547 | d_drop(direntry); |
| 548 | isValid = 0; |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 549 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | return isValid; |
| 553 | } |
| 554 | |
| 555 | /* static int cifs_d_delete(struct dentry *direntry) |
| 556 | { |
| 557 | int rc = 0; |
| 558 | |
| 559 | cFYI(1, ("In cifs d_delete, name = %s", direntry->d_name.name)); |
| 560 | |
| 561 | return rc; |
| 562 | } */ |
| 563 | |
| 564 | struct dentry_operations cifs_dentry_ops = { |
| 565 | .d_revalidate = cifs_d_revalidate, |
Steve French | 5fdae1f | 2007-06-05 18:30:44 +0000 | [diff] [blame] | 566 | /* d_delete: cifs_d_delete, */ /* not needed except for debugging */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | }; |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 568 | |
| 569 | static int cifs_ci_hash(struct dentry *dentry, struct qstr *q) |
| 570 | { |
| 571 | struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls; |
| 572 | unsigned long hash; |
| 573 | int i; |
| 574 | |
| 575 | hash = init_name_hash(); |
| 576 | for (i = 0; i < q->len; i++) |
| 577 | hash = partial_name_hash(nls_tolower(codepage, q->name[i]), |
| 578 | hash); |
| 579 | q->hash = end_name_hash(hash); |
| 580 | |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int cifs_ci_compare(struct dentry *dentry, struct qstr *a, |
| 585 | struct qstr *b) |
| 586 | { |
| 587 | struct nls_table *codepage = CIFS_SB(dentry->d_inode->i_sb)->local_nls; |
| 588 | |
| 589 | if ((a->len == b->len) && |
| 590 | (nls_strnicmp(codepage, a->name, b->name, a->len) == 0)) { |
| 591 | /* |
| 592 | * To preserve case, don't let an existing negative dentry's |
| 593 | * case take precedence. If a is not a negative dentry, this |
| 594 | * should have no side effects |
| 595 | */ |
Steve French | 44093ca | 2007-10-23 21:22:55 +0000 | [diff] [blame] | 596 | memcpy(a->name, b->name, a->len); |
Steve French | b92327f | 2005-08-22 20:09:43 -0700 | [diff] [blame] | 597 | return 0; |
| 598 | } |
| 599 | return 1; |
| 600 | } |
| 601 | |
| 602 | struct dentry_operations cifs_ci_dentry_ops = { |
| 603 | .d_revalidate = cifs_d_revalidate, |
| 604 | .d_hash = cifs_ci_hash, |
| 605 | .d_compare = cifs_ci_compare, |
| 606 | }; |