sysfs: Add sysfs_add/remove_files utility functions
Adding/Removing a whole array of attributes is very common. Add a standard
utility function to do this with a simple function call, instead of
requiring drivers to open code this.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index dc30d9e..50b725b 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -542,6 +542,18 @@
}
+int sysfs_create_files(struct kobject *kobj, const struct attribute **ptr)
+{
+ int err = 0;
+ int i;
+
+ for (i = 0; ptr[i] && !err; i++)
+ err = sysfs_create_file(kobj, ptr[i]);
+ if (err)
+ while (--i >= 0)
+ sysfs_remove_file(kobj, ptr[i]);
+ return err;
+}
/**
* sysfs_add_file_to_group - add an attribute file to a pre-existing group.
@@ -614,6 +626,12 @@
sysfs_hash_and_remove(kobj->sd, attr->name);
}
+void sysfs_remove_files(struct kobject * kobj, const struct attribute **ptr)
+{
+ int i;
+ for (i = 0; ptr[i]; i++)
+ sysfs_remove_file(kobj, ptr[i]);
+}
/**
* sysfs_remove_file_from_group - remove an attribute file from a group.
@@ -732,3 +750,5 @@
EXPORT_SYMBOL_GPL(sysfs_create_file);
EXPORT_SYMBOL_GPL(sysfs_remove_file);
+EXPORT_SYMBOL_GPL(sysfs_remove_files);
+EXPORT_SYMBOL_GPL(sysfs_create_files);