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authorLi Zefan <lizf@cn.fujitsu.com>2009-04-08 15:09:29 +0800
committerAl Viro <viro@zeniv.linux.org.uk>2009-04-20 23:02:51 -0400
commitfd56d242b3b80b6f2ca174272b20029aae61df75 (patch)
tree57f51b3471dc6fdb8bcb92bff5bfdc8f4c441cd1 /fs/ecryptfs/miscdev.c
parenta9482ebcdedbc5872ed34a266e6a45c35116f264 (diff)
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ecryptfs: use memdup_user()
Remove open-coded memdup_user(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ecryptfs/miscdev.c')
-rw-r--r--fs/ecryptfs/miscdev.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index a67fea6..dda3c58 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -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++]) {