diff options
Diffstat (limited to 'fs/xfs/xfs_ioctl.c')
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 47151b29a7ae..d5597d7b98c0 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -1649,6 +1649,51 @@ xfs_ioc_scrub_metadata( return 0; } +STATIC int +xfs_ioc_scrubv_metadata( + struct file *filp, + void __user *arg) +{ + struct xfs_scrub_vec_head __user *uhead = arg; + struct xfs_scrub_vec_head head; + struct xfs_scrub_vec_head *vhead; + size_t bytes; + int error; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(&head, uhead, sizeof(head))) + return -EFAULT; + + bytes = sizeof_xfs_scrub_vec(head.svh_nr); + if (bytes > PAGE_SIZE) + return -ENOMEM; + vhead = kvmalloc(bytes, GFP_KERNEL | __GFP_RETRY_MAYFAIL); + if (!vhead) + return -ENOMEM; + memcpy(vhead, &head, sizeof(struct xfs_scrub_vec_head)); + + if (copy_from_user(&vhead->svh_vecs, &uhead->svh_vecs, + head.svh_nr * sizeof(struct xfs_scrub_vec))) { + error = -EFAULT; + goto err_free; + } + + error = xfs_scrubv_metadata(filp, vhead); + if (error) + goto err_free; + + if (copy_to_user(uhead, vhead, bytes)) { + error = -EFAULT; + goto err_free; + } + +err_free: + kvfree(vhead); + return error; +} + int xfs_ioc_swapext( struct xfs_swapext *sxp) @@ -1914,6 +1959,8 @@ xfs_file_ioctl( case FS_IOC_GETFSMAP: return xfs_ioc_getfsmap(ip, arg); + case XFS_IOC_SCRUBV_METADATA: + return xfs_ioc_scrubv_metadata(filp, arg); case XFS_IOC_SCRUB_METADATA: return xfs_ioc_scrub_metadata(filp, arg); |