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-rw-r--r--kernel/cpuset.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 7491352276b2..6633f3fb6417 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1113,6 +1113,21 @@ static int cpuset_file_release(struct inode *inode, struct file *file)
return 0;
}
+/*
+ * cpuset_rename - Only allow simple rename of directories in place.
+ */
+static int cpuset_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
+{
+ if (!S_ISDIR(old_dentry->d_inode->i_mode))
+ return -ENOTDIR;
+ if (new_dentry->d_inode)
+ return -EEXIST;
+ if (old_dir != new_dir)
+ return -EIO;
+ return simple_rename(old_dir, old_dentry, new_dir, new_dentry);
+}
+
static struct file_operations cpuset_file_operations = {
.read = cpuset_file_read,
.write = cpuset_file_write,
@@ -1125,6 +1140,7 @@ static struct inode_operations cpuset_dir_inode_operations = {
.lookup = simple_lookup,
.mkdir = cpuset_mkdir,
.rmdir = cpuset_rmdir,
+ .rename = cpuset_rename,
};
static int cpuset_create_file(struct dentry *dentry, int mode)