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author | Tejun Heo <tj@kernel.org> | 2015-11-20 15:55:52 -0500 |
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committer | Tejun Heo <tj@kernel.org> | 2015-11-20 15:55:52 -0500 |
commit | bd96f76a2454c6b97d70945902e30b4c31510678 (patch) | |
tree | 6700838f83e76e2558f9a36742acf81b589d3d38 /include/linux/kernfs.h | |
parent | b11cfb5807e30333b36c02701382b820b7dcf0d5 (diff) | |
download | linux-stable-bd96f76a2454c6b97d70945902e30b4c31510678.tar.gz linux-stable-bd96f76a2454c6b97d70945902e30b4c31510678.tar.bz2 linux-stable-bd96f76a2454c6b97d70945902e30b4c31510678.zip |
kernfs: implement kernfs_walk_and_get()
Implement kernfs_walk_and_get() which is similar to
kernfs_find_and_get() but can walk a path instead of just a name.
v2: Use strlcpy() instead of strlen() + memcpy() as suggested by
David.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: David Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/kernfs.h')
-rw-r--r-- | include/linux/kernfs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 5d4e9c4b821d..af51df35d749 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -274,6 +274,8 @@ void pr_cont_kernfs_path(struct kernfs_node *kn); struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn); struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent, const char *name, const void *ns); +struct kernfs_node *kernfs_walk_and_get_ns(struct kernfs_node *parent, + const char *path, const void *ns); void kernfs_get(struct kernfs_node *kn); void kernfs_put(struct kernfs_node *kn); @@ -350,6 +352,10 @@ static inline struct kernfs_node * kernfs_find_and_get_ns(struct kernfs_node *parent, const char *name, const void *ns) { return NULL; } +static inline struct kernfs_node * +kernfs_walk_and_get_ns(struct kernfs_node *parent, const char *path, + const void *ns) +{ return NULL; } static inline void kernfs_get(struct kernfs_node *kn) { } static inline void kernfs_put(struct kernfs_node *kn) { } @@ -431,6 +437,12 @@ kernfs_find_and_get(struct kernfs_node *kn, const char *name) } static inline struct kernfs_node * +kernfs_walk_and_get(struct kernfs_node *kn, const char *path) +{ + return kernfs_walk_and_get_ns(kn, path, NULL); +} + +static inline struct kernfs_node * kernfs_create_dir(struct kernfs_node *parent, const char *name, umode_t mode, void *priv) { |