1 files changed, 84 insertions, 0 deletions

diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
new file mode 100644
index 000000000000..f11ac5ea7021
--- /dev/null
+++ b/fs/sysfs/group.c
@@ -0,0 +1,84 @@
+/*
+ * fs/sysfs/group.c - Operations for adding/removing multiple files at once.
+ *
+ * Copyright (c) 2003 Patrick Mochel
+ * Copyright (c) 2003 Open Source Development Lab
+ *
+ * This file is released undert the GPL v2. 
+ *
+ */
+
+#include <linux/kobject.h>
+#include <linux/module.h>
+#include <linux/dcache.h>
+#include <linux/err.h>
+#include "sysfs.h"
+
+
+static void remove_files(struct dentry * dir, 
+                         const struct attribute_group * grp)
+{
+        struct attribute *const* attr;
+
+        for (attr = grp->attrs; *attr; attr++)
+                sysfs_hash_and_remove(dir,(*attr)->name);
+}
+
+static int create_files(struct dentry * dir,
+                        const struct attribute_group * grp)
+{
+        struct attribute *const* attr;
+        int error = 0;
+
+        for (attr = grp->attrs; *attr && !error; attr++) {
+                error = sysfs_add_file(dir, *attr, SYSFS_KOBJ_ATTR);
+        }
+        if (error)
+                remove_files(dir,grp);
+        return error;
+}
+
+
+int sysfs_create_group(struct kobject * kobj, 
+                       const struct attribute_group * grp)
+{
+        struct dentry * dir;
+        int error;
+
+        BUG_ON(!kobj || !kobj->dentry);
+
+        if (grp->name) {
+                error = sysfs_create_subdir(kobj,grp->name,&dir);
+                if (error)
+                        return error;
+        } else
+                dir = kobj->dentry;
+        dir = dget(dir);
+        if ((error = create_files(dir,grp))) {
+                if (grp->name)
+                        sysfs_remove_subdir(dir);
+        }
+        dput(dir);
+        return error;
+}
+
+void sysfs_remove_group(struct kobject * kobj, 
+                        const struct attribute_group * grp)
+{
+        struct dentry * dir;
+
+        if (grp->name)
+                dir = sysfs_get_dentry(kobj->dentry,grp->name);
+        else
+                dir = dget(kobj->dentry);
+
+        remove_files(dir,grp);
+        if (grp->name)
+                sysfs_remove_subdir(dir);
+        /* release the ref. taken in this routine */
+        dput(dir);
+}
+
+
+EXPORT_SYMBOL_GPL(sysfs_create_group);
+EXPORT_SYMBOL_GPL(sysfs_remove_group);