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| author | Tejun Heo <tj@kernel.org> | 2013-11-23 17:21:50 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-27 13:57:56 -0800 |
| commit | 5d0e26bb59a680a5d97db5b6629941603e8de229 (patch) | |
| tree | 221776b29c3cdc947c5e8637856a111d1dc05368 /include/linux/kernfs.h | |
| parent | 879f40d193bb3c6c13930e88e3e9d5d7baf84d19 (diff) | |
| download | lwn-5d0e26bb59a680a5d97db5b6629941603e8de229.tar.gz lwn-5d0e26bb59a680a5d97db5b6629941603e8de229.zip | |
sysfs, kernfs: introduce kernfs_create_link()
Separate out kernfs symlink interface - kernfs_create_link() - which
takes and returns sysfs_dirents, from sysfs_do_create_link_sd().
sysfs_do_create_link_sd() now just determines the parent and target
sysfs_dirents and invokes the new interface and handles dup warning.
This patch doesn't introduce behavior changes.
v2: Dummy implementation for !CONFIG_SYSFS updated to return -ENOSYS.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kernfs.h')
| -rw-r--r-- | include/linux/kernfs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 83e151ad0619..fe6290d41776 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -8,17 +8,26 @@ #define __LINUX_KERNFS_H #include <linux/kernel.h> +#include <linux/err.h> struct sysfs_dirent; #ifdef CONFIG_SYSFS +struct sysfs_dirent *kernfs_create_link(struct sysfs_dirent *parent, + const char *name, + struct sysfs_dirent *target); void kernfs_remove(struct sysfs_dirent *sd); int kernfs_remove_by_name_ns(struct sysfs_dirent *parent, const char *name, const void *ns); #else /* CONFIG_SYSFS */ +static inline struct sysfs_dirent * +kernfs_create_link(struct sysfs_dirent *parent, const char *name, + struct sysfs_dirent *target) +{ return ERR_PTR(-ENOSYS); } + static inline void kernfs_remove(struct sysfs_dirent *sd) { } static inline int kernfs_remove_by_name_ns(struct sysfs_dirent *parent, |