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-rw-r--r--fs/sysfs/group.c66
-rw-r--r--include/linux/sysfs.h4
2 files changed, 48 insertions, 22 deletions
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index aec3d5c98c94..e5719c6095c3 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -20,38 +20,64 @@ static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp)
{
struct attribute *const* attr;
- int i;
+ struct bin_attribute *const* bin_attr;
- for (i = 0, attr = grp->attrs; *attr; i++, attr++)
- sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
+ if (grp->attrs)
+ for (attr = grp->attrs; *attr; attr++)
+ sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
+ if (grp->bin_attrs)
+ for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++)
+ sysfs_remove_bin_file(kobj, *bin_attr);
}
static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp, int update)
{
struct attribute *const* attr;
+ struct bin_attribute *const* bin_attr;
int error = 0, i;
- for (i = 0, attr = grp->attrs; *attr && !error; i++, attr++) {
- umode_t mode = 0;
+ if (grp->attrs) {
+ for (i = 0, attr = grp->attrs; *attr && !error; i++, attr++) {
+ umode_t mode = 0;
+
+ /*
+ * In update mode, we're changing the permissions or
+ * visibility. Do this by first removing then
+ * re-adding (if required) the file.
+ */
+ if (update)
+ sysfs_hash_and_remove(dir_sd, NULL,
+ (*attr)->name);
+ if (grp->is_visible) {
+ mode = grp->is_visible(kobj, *attr, i);
+ if (!mode)
+ continue;
+ }
+ error = sysfs_add_file_mode(dir_sd, *attr,
+ SYSFS_KOBJ_ATTR,
+ (*attr)->mode | mode);
+ if (unlikely(error))
+ break;
+ }
+ if (error) {
+ remove_files(dir_sd, kobj, grp);
+ goto exit;
+ }
+ }
- /* in update mode, we're changing the permissions or
- * visibility. Do this by first removing then
- * re-adding (if required) the file */
- if (update)
- sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
- if (grp->is_visible) {
- mode = grp->is_visible(kobj, *attr, i);
- if (!mode)
- continue;
+ if (grp->bin_attrs) {
+ for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) {
+ if (update)
+ sysfs_remove_bin_file(kobj, *bin_attr);
+ error = sysfs_create_bin_file(kobj, *bin_attr);
+ if (error)
+ break;
}
- error = sysfs_add_file_mode(dir_sd, *attr, SYSFS_KOBJ_ATTR,
- (*attr)->mode | mode);
- if (unlikely(error))
- break;
+ if (error)
+ remove_files(dir_sd, kobj, grp);
}
- if (error)
- remove_files(dir_sd, kobj, grp);
+exit:
return error;
}
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index d50a96b9bb6d..2c3b6a30697d 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -21,6 +21,7 @@
struct kobject;
struct module;
+struct bin_attribute;
enum kobj_ns_type;
struct attribute {
@@ -59,10 +60,9 @@ struct attribute_group {
umode_t (*is_visible)(struct kobject *,
struct attribute *, int);
struct attribute **attrs;
+ struct bin_attribute **bin_attrs;
};
-
-
/**
* Use these macros to make defining attributes easier. See include/linux/device.h
* for examples..