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authorTejun Heo <tj@kernel.org>2013-12-12 01:02:55 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-17 20:59:15 +0400
commitbb8b9d095c5c56cce99576cfef0cf9b989f7120d (patch)
tree9cc1ae8c8954de2d0dbb0b0f4c29a411d4716809
parentc637b8acbe079edb477d887041755b489036f146 (diff)
downloadlinux-bb8b9d095c5c56cce99576cfef0cf9b989f7120d.tar.xz
kernfs: add @mode to kernfs_create_dir[_ns]()
sysfs assumed 0755 for all newly created directories and kernfs inherited it. This assumption is unnecessarily restrictive and inconsistent with kernfs_create_file[_ns](). This patch adds @mode parameter to kernfs_create_dir[_ns]() and update uses in sysfs accordingly. Among others, this will be useful for implementations of the planned ->mkdir() method. This patch doesn't introduce any behavior differences. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/kernfs/dir.c9
-rw-r--r--fs/sysfs/dir.c3
-rw-r--r--fs/sysfs/group.c3
-rw-r--r--include/linux/kernfs.h13
4 files changed, 16 insertions, 12 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 6520066c49ea..e55bb02f15a4 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -639,22 +639,23 @@ void kernfs_destroy_root(struct kernfs_root *root)
* kernfs_create_dir_ns - create a directory
* @parent: parent in which to create a new directory
* @name: name of the new directory
+ * @mode: mode of the new directory
* @priv: opaque data associated with the new directory
* @ns: optional namespace tag of the directory
*
* Returns the created node on success, ERR_PTR() value on failure.
*/
struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
- const char *name, void *priv,
- const void *ns)
+ const char *name, umode_t mode,
+ void *priv, const void *ns)
{
- umode_t mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO;
struct kernfs_addrm_cxt acxt;
struct kernfs_node *kn;
int rc;
/* allocate */
- kn = kernfs_new_node(kernfs_root(parent), name, mode, KERNFS_DIR);
+ kn = kernfs_new_node(kernfs_root(parent), name, mode | S_IFDIR,
+ KERNFS_DIR);
if (!kn)
return ERR_PTR(-ENOMEM);
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index aa007401bfc9..ee0d761c3179 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -73,7 +73,8 @@ int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
if (!parent)
return -ENOENT;
- kn = kernfs_create_dir_ns(parent, kobject_name(kobj), kobj, ns);
+ kn = kernfs_create_dir_ns(parent, kobject_name(kobj),
+ S_IRWXU | S_IRUGO | S_IXUGO, kobj, ns);
if (IS_ERR(kn)) {
if (PTR_ERR(kn) == -EEXIST)
sysfs_warn_dup(parent, kobject_name(kobj));
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 4d00d3996477..6b579387c67a 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -100,7 +100,8 @@ static int internal_create_group(struct kobject *kobj, int update,
return -EINVAL;
}
if (grp->name) {
- kn = kernfs_create_dir(kobj->sd, grp->name, kobj);
+ kn = kernfs_create_dir(kobj->sd, grp->name,
+ S_IRWXU | S_IRUGO | S_IXUGO, kobj);
if (IS_ERR(kn)) {
if (PTR_ERR(kn) == -EEXIST)
sysfs_warn_dup(kobj->sd, grp->name);
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index e9c4e3a03960..0ca2aedfd31b 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -210,8 +210,8 @@ struct kernfs_root *kernfs_create_root(void *priv);
void kernfs_destroy_root(struct kernfs_root *root);
struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
- const char *name, void *priv,
- const void *ns);
+ const char *name, umode_t mode,
+ void *priv, const void *ns);
struct kernfs_node *kernfs_create_file_ns_key(struct kernfs_node *parent,
const char *name,
umode_t mode, loff_t size,
@@ -260,8 +260,8 @@ static inline struct kernfs_root *kernfs_create_root(void *priv)
static inline void kernfs_destroy_root(struct kernfs_root *root) { }
static inline struct kernfs_node *
-kernfs_create_dir_ns(struct kernfs_node *parent, const char *name, void *priv,
- const void *ns)
+kernfs_create_dir_ns(struct kernfs_node *parent, const char *name,
+ umode_t mode, void *priv, const void *ns)
{ return ERR_PTR(-ENOSYS); }
static inline struct kernfs_node *
@@ -314,9 +314,10 @@ kernfs_find_and_get(struct kernfs_node *kn, const char *name)
}
static inline struct kernfs_node *
-kernfs_create_dir(struct kernfs_node *parent, const char *name, void *priv)
+kernfs_create_dir(struct kernfs_node *parent, const char *name, umode_t mode,
+ void *priv)
{
- return kernfs_create_dir_ns(parent, name, priv, NULL);
+ return kernfs_create_dir_ns(parent, name, mode, priv, NULL);
}
static inline struct kernfs_node *