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BTRFS_IOC_TRANS_START should be privilegued
As mentioned in the comment next to it btrfs_ioctl_trans_start can do bad damage to filesystems and thus should be limited to privilegued users. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -706,6 +706,9 @@ long btrfs_ioctl_trans_start(struct file *file)
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struct btrfs_trans_handle *trans;
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struct btrfs_trans_handle *trans;
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int ret = 0;
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int ret = 0;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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mutex_lock(&root->fs_info->fs_mutex);
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mutex_lock(&root->fs_info->fs_mutex);
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if (file->private_data) {
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if (file->private_data) {
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ret = -EINPROGRESS;
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ret = -EINPROGRESS;
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