ncpfs: use memdup_user()
Li Zefan [Wed, 8 Apr 2009 07:08:53 +0000 (15:08 +0800)]
Remove open-coded memdup_user()

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ncpfs/ioctl.c

index f54360f..fa038df 100644 (file)
@@ -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;
                        }