diff options
Diffstat (limited to 'fs/sysfs/dir.c')
| -rw-r--r-- | fs/sysfs/dir.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 354675ad0965..620603296c6c 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -491,9 +491,16 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt, * * LOCKING: * Determined by sysfs_addrm_start(). + * + * RETURNS: + * 0 on success, -EEXIST if entry with the given name already + * exists. */ -void sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) +int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) { + if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) + return -EEXIST; + sd->s_parent = sysfs_get(acxt->parent_sd); if (sysfs_type(sd) == SYSFS_DIR && acxt->parent_inode) @@ -502,6 +509,8 @@ void sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) acxt->cnt++; sysfs_link_sibling(sd); + + return 0; } /** @@ -691,6 +700,7 @@ static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd, umode_t mode = S_IFDIR| S_IRWXU | S_IRUGO | S_IXUGO; struct sysfs_addrm_cxt acxt; struct sysfs_dirent *sd; + int rc; /* allocate */ sd = sysfs_new_dirent(name, mode, SYSFS_DIR); @@ -700,17 +710,15 @@ static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd, /* link in */ sysfs_addrm_start(&acxt, parent_sd); + rc = sysfs_add_one(&acxt, sd); + sysfs_addrm_finish(&acxt); - if (!sysfs_find_dirent(parent_sd, name)) - sysfs_add_one(&acxt, sd); - - if (!sysfs_addrm_finish(&acxt)) { + if (rc == 0) + *p_sd = sd; + else sysfs_put(sd); - return -EEXIST; - } - *p_sd = sd; - return 0; + return rc; } int sysfs_create_subdir(struct kobject *kobj, const char *name, |