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-rw-r--r--fs/sysfs/symlink.c45
1 files changed, 32 insertions, 13 deletions
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index 3c9eb5624f5e..8c940df97a52 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -21,26 +21,17 @@
#include "sysfs.h"
-static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
- const char *name, int warn)
+static int sysfs_do_create_link_sd(struct sysfs_dirent *parent_sd,
+ struct kobject *target,
+ const char *name, int warn)
{
- struct sysfs_dirent *parent_sd = NULL;
struct sysfs_dirent *target_sd = NULL;
struct sysfs_dirent *sd = NULL;
struct sysfs_addrm_cxt acxt;
enum kobj_ns_type ns_type;
int error;
- BUG_ON(!name);
-
- if (!kobj)
- parent_sd = &sysfs_root;
- else
- parent_sd = kobj->sd;
-
- error = -EFAULT;
- if (!parent_sd)
- goto out_put;
+ BUG_ON(!name || !parent_sd);
/* target->sd can go away beneath us but is protected with
* sysfs_assoc_lock. Fetch target_sd from it.
@@ -96,6 +87,34 @@ static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
}
/**
+ * sysfs_create_link_sd - create symlink to a given object.
+ * @sd: directory we're creating the link in.
+ * @target: object we're pointing to.
+ * @name: name of the symlink.
+ */
+int sysfs_create_link_sd(struct sysfs_dirent *sd, struct kobject *target,
+ const char *name)
+{
+ return sysfs_do_create_link_sd(sd, target, name, 1);
+}
+
+static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
+ const char *name, int warn)
+{
+ struct sysfs_dirent *parent_sd = NULL;
+
+ if (!kobj)
+ parent_sd = &sysfs_root;
+ else
+ parent_sd = kobj->sd;
+
+ if (!parent_sd)
+ return -EFAULT;
+
+ return sysfs_do_create_link_sd(parent_sd, target, name, warn);
+}
+
+/**
* sysfs_create_link - create symlink between two objects.
* @kobj: object whose directory we're creating the link in.
* @target: object we're pointing to.