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authorEric W. Biederman <ebiederm@xmission.com>2015-05-14 00:31:40 +0300
committerEric W. Biederman <ebiederm@xmission.com>2015-07-01 18:36:45 +0300
commit87d2846fcf88113fae2341da1ca9a71f0d916f2c (patch)
tree5aaf304f79f21e633d2efac5107266ff11dca2a1 /include/linux/sysfs.h
parentea015218f2f7ace2dad9cedd21ed95bdba2886d7 (diff)
downloadlinux-87d2846fcf88113fae2341da1ca9a71f0d916f2c.tar.xz
sysfs: Add support for permanently empty directories to serve as mount points.
Add two functions sysfs_create_mount_point and sysfs_remove_mount_point that hang a permanently empty directory off of a kobject or remove a permanently emptpy directory hanging from a kobject. Export these new functions so modular filesystems can use them. Cc: stable@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/sysfs.h')
-rw-r--r--include/linux/sysfs.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 99382c0df17e..9f65758311a4 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -210,6 +210,10 @@ int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name,
int __must_check sysfs_move_dir_ns(struct kobject *kobj,
struct kobject *new_parent_kobj,
const void *new_ns);
+int __must_check sysfs_create_mount_point(struct kobject *parent_kobj,
+ const char *name);
+void sysfs_remove_mount_point(struct kobject *parent_kobj,
+ const char *name);
int __must_check sysfs_create_file_ns(struct kobject *kobj,
const struct attribute *attr,
@@ -298,6 +302,17 @@ static inline int sysfs_move_dir_ns(struct kobject *kobj,
return 0;
}
+static inline int sysfs_create_mount_point(struct kobject *parent_kobj,
+ const char *name)
+{
+ return 0;
+}
+
+static inline void sysfs_remove_mount_point(struct kobject *parent_kobj,
+ const char *name)
+{
+}
+
static inline int sysfs_create_file_ns(struct kobject *kobj,
const struct attribute *attr,
const void *ns)