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authorChristian Brauner <christian.brauner@ubuntu.com>2020-02-27 06:37:11 +0300
committerDavid S. Miller <davem@davemloft.net>2020-02-27 07:07:25 +0300
commitf70ce185687bbe4e2d7ff126a8c890631f5fc2af (patch)
treefa62764ac154c9e86c2fa446aa534eebefeedb32 /include/linux/sysfs.h
parentd1c73cbdf9d3f6181a50398568372ef41b1f485c (diff)
downloadlinux-f70ce185687bbe4e2d7ff126a8c890631f5fc2af.tar.xz
sysfs: add sysfs_file_change_owner()
Add helpers to change the owner of a sysfs files. This function will be used to correctly account for kobject ownership changes, e.g. when moving network devices between network namespaces. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/sysfs.h')
-rw-r--r--include/linux/sysfs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index fa7ee503fb76..a7884024a911 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -310,6 +310,9 @@ static inline void sysfs_enable_ns(struct kernfs_node *kn)
return kernfs_enable_ns(kn);
}
+int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid,
+ kgid_t kgid);
+
#else /* CONFIG_SYSFS */
static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
@@ -522,6 +525,13 @@ static inline void sysfs_enable_ns(struct kernfs_node *kn)
{
}
+static inline int sysfs_file_change_owner(struct kobject *kobj,
+ const char *name, kuid_t kuid,
+ kgid_t kgid)
+{
+ return 0;
+}
+
#endif /* CONFIG_SYSFS */
static inline int __must_check sysfs_create_file(struct kobject *kobj,