[SCSI] sysfs: make group is_valid return a mode_t
We have a problem in scsi_transport_spi in that we need to customise
not only the visibility of the attributes, but also their mode. Fix
this by making the is_visible() callback return a mode, with 0
indicating is not visible.
Also add a sysfs_update_group() API to allow us to change either the
visibility or mode of the files at any time on the fly.
Acked-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 03378e3..add3c5a 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -32,7 +32,7 @@
struct attribute_group {
const char *name;
- int (*is_visible)(struct kobject *,
+ mode_t (*is_visible)(struct kobject *,
struct attribute *, int);
struct attribute **attrs;
};
@@ -105,6 +105,8 @@
int __must_check sysfs_create_group(struct kobject *kobj,
const struct attribute_group *grp);
+int sysfs_update_group(struct kobject *kobj,
+ const struct attribute_group *grp);
void sysfs_remove_group(struct kobject *kobj,
const struct attribute_group *grp);
int sysfs_add_file_to_group(struct kobject *kobj,