diff options
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 66 |
1 files changed, 37 insertions, 29 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 38c06f826575..302ea15f02e6 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c | |||
| @@ -130,10 +130,6 @@ static inline int cifs_posix_open_inode_helper(struct inode *inode, | |||
| 130 | struct cifsFileInfo *pCifsFile, int oplock, u16 netfid) | 130 | struct cifsFileInfo *pCifsFile, int oplock, u16 netfid) |
| 131 | { | 131 | { |
| 132 | 132 | ||
| 133 | file->private_data = kmalloc(sizeof(struct cifsFileInfo), GFP_KERNEL); | ||
| 134 | if (file->private_data == NULL) | ||
| 135 | return -ENOMEM; | ||
| 136 | pCifsFile = cifs_init_private(file->private_data, inode, file, netfid); | ||
| 137 | write_lock(&GlobalSMBSeslock); | 133 | write_lock(&GlobalSMBSeslock); |
| 138 | 134 | ||
| 139 | pCifsInode = CIFS_I(file->f_path.dentry->d_inode); | 135 | pCifsInode = CIFS_I(file->f_path.dentry->d_inode); |
| @@ -184,6 +180,38 @@ psx_client_can_cache: | |||
| 184 | return 0; | 180 | return 0; |
| 185 | } | 181 | } |
| 186 | 182 | ||
| 183 | static struct cifsFileInfo * | ||
| 184 | cifs_fill_filedata(struct file *file) | ||
| 185 | { | ||
| 186 | struct list_head *tmp; | ||
| 187 | struct cifsFileInfo *pCifsFile = NULL; | ||
| 188 | struct cifsInodeInfo *pCifsInode = NULL; | ||
| 189 | |||
| 190 | /* search inode for this file and fill in file->private_data */ | ||
| 191 | pCifsInode = CIFS_I(file->f_path.dentry->d_inode); | ||
| 192 | read_lock(&GlobalSMBSeslock); | ||
| 193 | list_for_each(tmp, &pCifsInode->openFileList) { | ||
| 194 | pCifsFile = list_entry(tmp, struct cifsFileInfo, flist); | ||
| 195 | if ((pCifsFile->pfile == NULL) && | ||
| 196 | (pCifsFile->pid == current->tgid)) { | ||
| 197 | /* mode set in cifs_create */ | ||
| 198 | |||
| 199 | /* needed for writepage */ | ||
| 200 | pCifsFile->pfile = file; | ||
| 201 | file->private_data = pCifsFile; | ||
| 202 | break; | ||
| 203 | } | ||
| 204 | } | ||
| 205 | read_unlock(&GlobalSMBSeslock); | ||
| 206 | |||
| 207 | if (file->private_data != NULL) { | ||
| 208 | return pCifsFile; | ||
| 209 | } else if ((file->f_flags & O_CREAT) && (file->f_flags & O_EXCL)) | ||
| 210 | cERROR(1, ("could not find file instance for " | ||
| 211 | "new file %p", file)); | ||
| 212 | return NULL; | ||
| 213 | } | ||
| 214 | |||
| 187 | /* all arguments to this function must be checked for validity in caller */ | 215 | /* all arguments to this function must be checked for validity in caller */ |
| 188 | static inline int cifs_open_inode_helper(struct inode *inode, struct file *file, | 216 | static inline int cifs_open_inode_helper(struct inode *inode, struct file *file, |
| 189 | struct cifsInodeInfo *pCifsInode, struct cifsFileInfo *pCifsFile, | 217 | struct cifsInodeInfo *pCifsInode, struct cifsFileInfo *pCifsFile, |
| @@ -258,7 +286,6 @@ int cifs_open(struct inode *inode, struct file *file) | |||
| 258 | struct cifsTconInfo *tcon; | 286 | struct cifsTconInfo *tcon; |
| 259 | struct cifsFileInfo *pCifsFile; | 287 | struct cifsFileInfo *pCifsFile; |
| 260 | struct cifsInodeInfo *pCifsInode; | 288 | struct cifsInodeInfo *pCifsInode; |
| 261 | struct list_head *tmp; | ||
| 262 | char *full_path = NULL; | 289 | char *full_path = NULL; |
| 263 | int desiredAccess; | 290 | int desiredAccess; |
| 264 | int disposition; | 291 | int disposition; |
| @@ -270,32 +297,12 @@ int cifs_open(struct inode *inode, struct file *file) | |||
| 270 | cifs_sb = CIFS_SB(inode->i_sb); | 297 | cifs_sb = CIFS_SB(inode->i_sb); |
| 271 | tcon = cifs_sb->tcon; | 298 | tcon = cifs_sb->tcon; |
| 272 | 299 | ||
| 273 | /* search inode for this file and fill in file->private_data */ | ||
| 274 | pCifsInode = CIFS_I(file->f_path.dentry->d_inode); | 300 | pCifsInode = CIFS_I(file->f_path.dentry->d_inode); |
| 275 | read_lock(&GlobalSMBSeslock); | 301 | pCifsFile = cifs_fill_filedata(file); |
| 276 | list_for_each(tmp, &pCifsInode->openFileList) { | 302 | if (pCifsFile) { |
| 277 | pCifsFile = list_entry(tmp, struct cifsFileInfo, | ||
| 278 | flist); | ||
| 279 | if ((pCifsFile->pfile == NULL) && | ||
| 280 | (pCifsFile->pid == current->tgid)) { | ||
| 281 | /* mode set in cifs_create */ | ||
| 282 | |||
| 283 | /* needed for writepage */ | ||
| 284 | pCifsFile->pfile = file; | ||
| 285 | |||
| 286 | file->private_data = pCifsFile; | ||
| 287 | break; | ||
| 288 | } | ||
| 289 | } | ||
| 290 | read_unlock(&GlobalSMBSeslock); | ||
| 291 | |||
| 292 | if (file->private_data != NULL) { | ||
| 293 | rc = 0; | ||
| 294 | FreeXid(xid); | 303 | FreeXid(xid); |
| 295 | return rc; | 304 | return 0; |
| 296 | } else if ((file->f_flags & O_CREAT) && (file->f_flags & O_EXCL)) | 305 | } |
| 297 | cERROR(1, ("could not find file instance for " | ||
| 298 | "new file %p", file)); | ||
| 299 | 306 | ||
| 300 | full_path = build_path_from_dentry(file->f_path.dentry); | 307 | full_path = build_path_from_dentry(file->f_path.dentry); |
| 301 | if (full_path == NULL) { | 308 | if (full_path == NULL) { |
| @@ -325,6 +332,7 @@ int cifs_open(struct inode *inode, struct file *file) | |||
| 325 | /* no need for special case handling of setting mode | 332 | /* no need for special case handling of setting mode |
| 326 | on read only files needed here */ | 333 | on read only files needed here */ |
| 327 | 334 | ||
| 335 | pCifsFile = cifs_fill_filedata(file); | ||
| 328 | cifs_posix_open_inode_helper(inode, file, pCifsInode, | 336 | cifs_posix_open_inode_helper(inode, file, pCifsInode, |
| 329 | pCifsFile, oplock, netfid); | 337 | pCifsFile, oplock, netfid); |
| 330 | goto out; | 338 | goto out; |
