diff options
| -rw-r--r-- | fs/namei.c | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/fs/namei.c b/fs/namei.c index e213e7bf028a..8311dce1c649 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3027,9 +3027,9 @@ static int may_o_create(const struct path *dir, struct dentry *dentry, umode_t m * Returns 0 if successful. The file will have been created and attached to * @file by the filesystem calling finish_open(). * - * Returns 1 if the file was looked up only or didn't need creating. The - * caller will need to perform the open themselves. @path will have been - * updated to point to the new dentry. This may be negative. + * If the file was looked up only or didn't need creating, FMODE_OPENED won't + * be set. The caller will need to perform the open themselves. @path will + * have been updated to point to the new dentry. This may be negative. * * Returns an error code otherwise. */ @@ -3082,7 +3082,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, } else { path->dentry = dentry; path->mnt = nd->path.mnt; - return 1; + return 0; } } } @@ -3093,17 +3093,17 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, /* * Look up and maybe create and open the last component. * - * Must be called with i_mutex held on parent. - * - * Returns 0 if the file was successfully atomically created (if necessary) and - * opened. In this case the file will be returned attached to @file. + * Must be called with parent locked (exclusive in O_CREAT case). * - * Returns 1 if the file was not completely opened at this time, though lookups - * and creations will have been performed and the dentry returned in @path will - * be positive upon return if O_CREAT was specified. If O_CREAT wasn't - * specified then a negative dentry may be returned. + * Returns 0 on success, that is, if + * the file was successfully atomically created (if necessary) and opened, or + * the file was not completely opened at this time, though lookups and + * creations were performed. + * These case are distinguished by presence of FMODE_OPENED on file->f_mode. + * In the latter case dentry returned in @path might be negative if O_CREAT + * hadn't been specified. * - * An error code is returned otherwise. + * An error code is returned on failure. */ static int lookup_open(struct nameidata *nd, struct path *path, struct file *file, @@ -3225,7 +3225,7 @@ no_open: out_no_open: path->dentry = dentry; path->mnt = nd->path.mnt; - return 1; + return 0; out_dput: dput(dentry); @@ -3308,10 +3308,10 @@ static int do_last(struct nameidata *nd, else inode_unlock_shared(dir->d_inode); - if (error <= 0) { - if (error) - goto out; + if (error) + goto out; + if (file->f_mode & FMODE_OPENED) { if ((file->f_mode & FMODE_CREATED) || !S_ISREG(file_inode(file)->i_mode)) will_truncate = false; |