Commit fd56d242 authored by Li Zefan's avatar Li Zefan Committed by Al Viro
Browse files

ecryptfs: use memdup_user() 



Remove open-coded memdup_user().

Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent a9482ebc

fs/ecryptfs/miscdev.c

+5 −10
Original line number Diff line number Diff line
@@ -418,18 +418,13 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf, 


	if (count == 0)

		goto out;

	data = kmalloc(count, GFP_KERNEL);

	if (!data) {

		printk(KERN_ERR "%s: Out of memory whilst attempting to "

		       "kmalloc([%zd], GFP_KERNEL)\n", __func__, count);



	data = memdup_user(buf, count);

	if (IS_ERR(data)) {

		printk(KERN_ERR "%s: memdup_user returned error [%ld]\n",

		       __func__, PTR_ERR(data));

		goto out;

	}

	rc = copy_from_user(data, buf, count);

	if (rc) {

		printk(KERN_ERR "%s: copy_from_user returned error [%d]\n",

		       __func__, rc);

		goto out_free;

	}

	sz = count;

	i = 0;

	switch (data[i++]) {