2 * fs/sysfs/group.c - Operations for adding/removing multiple files at once.
4 * Copyright (c) 2003 Patrick Mochel
5 * Copyright (c) 2003 Open Source Development Lab
7 * This file is released undert the GPL v2.
11 #include <linux/kobject.h>
12 #include <linux/module.h>
13 #include <linux/dcache.h>
14 #include <linux/namei.h>
15 #include <linux/err.h>
16 #include <asm/semaphore.h>
20 static void remove_files(struct dentry * dir,
21 const struct attribute_group * grp)
23 struct attribute *const* attr;
25 for (attr = grp->attrs; *attr; attr++)
26 sysfs_hash_and_remove(dir,(*attr)->name);
29 static int create_files(struct dentry * dir,
30 const struct attribute_group * grp)
32 struct attribute *const* attr;
35 for (attr = grp->attrs; *attr && !error; attr++) {
36 error = sysfs_add_file(dir, *attr, SYSFS_KOBJ_ATTR);
39 remove_files(dir,grp);
44 int sysfs_create_group(struct kobject * kobj,
45 const struct attribute_group * grp)
50 BUG_ON(!kobj || !kobj->dentry);
53 error = sysfs_create_subdir(kobj,grp->name,&dir);
59 if ((error = create_files(dir,grp))) {
61 sysfs_remove_subdir(dir);
67 void sysfs_remove_group(struct kobject * kobj,
68 const struct attribute_group * grp)
73 dir = lookup_one_len(grp->name, kobj->dentry,
76 dir = dget(kobj->dentry);
78 remove_files(dir,grp);
80 sysfs_remove_subdir(dir);
81 /* release the ref. taken in this routine */
86 EXPORT_SYMBOL_GPL(sysfs_create_group);
87 EXPORT_SYMBOL_GPL(sysfs_remove_group);