From 6adb35e643193e4efdab01da6352b2fb5204f600 Mon Sep 17 00:00:00 2001
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Mon, 18 Apr 2005 21:57:32 -0700
Subject: [PATCH] --- yaml --- r: 306 b: refs/heads/master c:
 31e5abe9a6dab1ed3a5c30352bdb001353146318 h: refs/heads/master v: v3

---
 [refs]                      |  2 +-
 trunk/fs/sysfs/file.c       | 35 +++++++++++++++++++++++++++++++++++
 trunk/include/linux/sysfs.h |  7 +++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 6e4a3fbc3fa7..31689c49f820 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6897089c5f7989603ccb9c696050470ba1dbd262
+refs/heads/master: 31e5abe9a6dab1ed3a5c30352bdb001353146318
diff --git a/trunk/fs/sysfs/file.c b/trunk/fs/sysfs/file.c
index 352f966a1174..da25aeb0e062 100644
--- a/trunk/fs/sysfs/file.c
+++ b/trunk/fs/sysfs/file.c
@@ -427,6 +427,41 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr)
 }
 
 
+/**
+ * sysfs_chmod_file - update the modified mode value on an object attribute.
+ * @kobj: object we're acting for.
+ * @attr: attribute descriptor.
+ * @mode: file permissions.
+ *
+ */
+int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
+{
+	struct dentry *dir = kobj->dentry;
+	struct dentry *victim;
+	struct sysfs_dirent *sd;
+	umode_t umode = (mode & S_IALLUGO) | S_IFREG;
+	int res = -ENOENT;
+
+	down(&dir->d_inode->i_sem);
+	victim = sysfs_get_dentry(dir, attr->name);
+	if (!IS_ERR(victim)) {
+		if (victim->d_inode &&
+		    (victim->d_parent->d_inode == dir->d_inode)) {
+			sd = victim->d_fsdata;
+			attr->mode = mode;
+			sd->s_mode = umode;
+			victim->d_inode->i_mode = umode;
+			dput(victim);
+			res = 0;
+		}
+	}
+	up(&dir->d_inode->i_sem);
+
+	return res;
+}
+EXPORT_SYMBOL_GPL(sysfs_chmod_file);
+
+
 /**
  *	sysfs_remove_file - remove an object attribute.
  *	@kobj:	object we're acting for.
diff --git a/trunk/include/linux/sysfs.h b/trunk/include/linux/sysfs.h
index 6f502ff7902a..38b58b30814a 100644
--- a/trunk/include/linux/sysfs.h
+++ b/trunk/include/linux/sysfs.h
@@ -99,6 +99,9 @@ sysfs_create_file(struct kobject *, const struct attribute *);
 extern int
 sysfs_update_file(struct kobject *, const struct attribute *);
 
+extern int
+sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);
+
 extern void
 sysfs_remove_file(struct kobject *, const struct attribute *);
 
@@ -140,6 +143,10 @@ static inline int sysfs_update_file(struct kobject * k, const struct attribute *
 {
 	return 0;
 }
+static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
+{
+	return 0;
+}
 
 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
 {