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; |