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| author | Tejun Heo <tj@kernel.org> | 2013-11-23 17:21:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-27 13:57:57 -0800 |
| commit | 5d60418e54751c856f5aecc308620fde9572e481 (patch) | |
| tree | 364f8e338ee33fbd0186c53ed962438255746854 /include/linux | |
| parent | 890ece160c6465b49c42975d529c3481d89da8f5 (diff) | |
| download | lwn-5d60418e54751c856f5aecc308620fde9572e481.tar.gz lwn-5d60418e54751c856f5aecc308620fde9572e481.zip | |
sysfs, kernfs: introduce kernfs_setattr()
Introduce kernfs setattr interface - kernfs_setattr().
sysfs_sd_setattr() is renamed to __kernfs_setattr() and
kernfs_setattr() is a simple wrapper around it with sysfs_mutex
locking. sysfs_chmod_file() is updated to get an explicit ref on
kobj->sd and then invoke kernfs_setattr() so that it doesn't have to
use internal interface.
This patch doesn't introduce any behavior differences.
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')
| -rw-r--r-- | include/linux/kernfs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 803d9600cf72..8cb673875715 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -10,6 +10,9 @@ #include <linux/kernel.h> #include <linux/err.h> +struct file; +struct iattr; + struct sysfs_dirent; #ifdef CONFIG_SYSFS @@ -22,6 +25,7 @@ int kernfs_remove_by_name_ns(struct sysfs_dirent *parent, const char *name, const void *ns); int kernfs_rename_ns(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent, const char *new_name, const void *new_ns); +int kernfs_setattr(struct sysfs_dirent *sd, const struct iattr *iattr); #else /* CONFIG_SYSFS */ @@ -41,6 +45,10 @@ static inline int kernfs_rename_ns(struct sysfs_dirent *sd, const char *new_name, const void *new_ns) { return -ENOSYS; } +static inline int kernfs_setattr(struct sysfs_dirent *sd, + const struct iattr *iattr) +{ return -ENOSYS; } + #endif /* CONFIG_SYSFS */ static inline int kernfs_remove_by_name(struct sysfs_dirent *parent, |