ncpfs: 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>

1 files changed, 7 insertions, 14 deletions

diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index f54360f50a9c..fa038df63ac8 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -660,13 +660,10 @@ outrel:
                         if (user.object_name_len > NCP_OBJECT_NAME_MAX_LEN)
                                 return -ENOMEM;
                         if (user.object_name_len) {
-                                newname = kmalloc(user.object_name_len, GFP_USER);
-                                if (!newname)
-                                        return -ENOMEM;
-                                if (copy_from_user(newname, user.object_name, user.object_name_len)) {
-                                        kfree(newname);
-                                        return -EFAULT;
-                                }
+                                newname = memdup_user(user.object_name,
+                                                      user.object_name_len);
+                                if (IS_ERR(newname))
+                                        return PTR_ERR(newname);
                         } else {
                                 newname = NULL;
                         }
@@ -760,13 +757,9 @@ outrel:
                         if (user.len > NCP_PRIVATE_DATA_MAX_LEN)
                                 return -ENOMEM;
                         if (user.len) {
-                                new = kmalloc(user.len, GFP_USER);
-                                if (!new)
-                                        return -ENOMEM;
-                                if (copy_from_user(new, user.data, user.len)) {
-                                        kfree(new);
-                                        return -EFAULT;
-                                }
+                                new = memdup_user(user.data, user.len);
+                                if (IS_ERR(new))
+                                        return PTR_ERR(new);
                         } else {
                                 new = NULL;
                         }