super.c (6967963d6d5cac40a091d075326f0e3ccb95c58a) super.c (dae7b665cf6d6e6e733f1c9c16cf55547dd37e33)
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

--- 621 unchanged lines hidden (view full) ---

630{
631 struct btrfs_ioctl_vol_args *vol;
632 struct btrfs_fs_devices *fs_devices;
633 int ret = -ENOTTY;
634
635 if (!capable(CAP_SYS_ADMIN))
636 return -EPERM;
637
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

--- 621 unchanged lines hidden (view full) ---

630{
631 struct btrfs_ioctl_vol_args *vol;
632 struct btrfs_fs_devices *fs_devices;
633 int ret = -ENOTTY;
634
635 if (!capable(CAP_SYS_ADMIN))
636 return -EPERM;
637
638 vol = kmalloc(sizeof(*vol), GFP_KERNEL);
639 if (!vol)
640 return -ENOMEM;
638 vol = memdup_user((void __user *)arg, sizeof(*vol));
639 if (IS_ERR(vol))
640 return PTR_ERR(vol);
641
641
642 if (copy_from_user(vol, (void __user *)arg, sizeof(*vol))) {
643 ret = -EFAULT;
644 goto out;
645 }
646
647 switch (cmd) {
648 case BTRFS_IOC_SCAN_DEV:
649 ret = btrfs_scan_one_device(vol->name, FMODE_READ,
650 &btrfs_fs_type, &fs_devices);
651 break;
652 }
642 switch (cmd) {
643 case BTRFS_IOC_SCAN_DEV:
644 ret = btrfs_scan_one_device(vol->name, FMODE_READ,
645 &btrfs_fs_type, &fs_devices);
646 break;
647 }
653out:
648
654 kfree(vol);
655 return ret;
656}
657
658static int btrfs_freeze(struct super_block *sb)
659{
660 struct btrfs_root *root = btrfs_sb(sb);
661 mutex_lock(&root->fs_info->transaction_kthread_mutex);

--- 111 unchanged lines hidden --- 		649 kfree(vol);
650 return ret;
651}
652
653static int btrfs_freeze(struct super_block *sb)
654{
655 struct btrfs_root *root = btrfs_sb(sb);
656 mutex_lock(&root->fs_info->transaction_kthread_mutex);

--- 111 unchanged lines hidden ---