diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-09-27 19:57:54 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-27 19:57:54 +0100 |
| commit | 2dc94310bd94d0906febea7d0f7c188da620c952 (patch) | |
| tree | 6de4096f1887e2c00966177354b1c378e59bd632 /fs/configfs/dir.c | |
| parent | c06015148fa9a3cc452ec7121b8c3f59f4a7d6ac (diff) | |
| parent | fb60cf4ab52f3520c2119aa42f7d4ed8e7594eb6 (diff) | |
| download | kernel_samsung_espresso10-2dc94310bd94d0906febea7d0f7c188da620c952.zip kernel_samsung_espresso10-2dc94310bd94d0906febea7d0f7c188da620c952.tar.gz kernel_samsung_espresso10-2dc94310bd94d0906febea7d0f7c188da620c952.tar.bz2 | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstream into devel
Diffstat (limited to 'fs/configfs/dir.c')
| -rw-r--r-- | fs/configfs/dir.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index df02545..816e8ef 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -86,6 +86,32 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare return sd; } +/* + * + * Return -EEXIST if there is already a configfs element with the same + * name for the same parent. + * + * called with parent inode's i_mutex held + */ +int configfs_dirent_exists(struct configfs_dirent *parent_sd, + const unsigned char *new) +{ + struct configfs_dirent * sd; + + list_for_each_entry(sd, &parent_sd->s_children, s_sibling) { + if (sd->s_element) { + const unsigned char *existing = configfs_get_name(sd); + if (strcmp(existing, new)) + continue; + else + return -EEXIST; + } + } + + return 0; +} + + int configfs_make_dirent(struct configfs_dirent * parent_sd, struct dentry * dentry, void * element, umode_t mode, int type) @@ -136,8 +162,10 @@ static int create_dir(struct config_item * k, struct dentry * p, int error; umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO; - error = configfs_make_dirent(p->d_fsdata, d, k, mode, - CONFIGFS_DIR); + error = configfs_dirent_exists(p->d_fsdata, d->d_name.name); + if (!error) + error = configfs_make_dirent(p->d_fsdata, d, k, mode, + CONFIGFS_DIR); if (!error) { error = configfs_create(d, mode, init_dir); if (!error) { |