diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-02-27 04:30:40 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-03-03 07:55:54 +0300 |
| commit | f60463195179016b2db34dd40bb72f403b836490 (patch) | |
| tree | 795ddd74ec79d2ac3b418195d5ec313da2e6bb97 /fs/xfs/xfs_ioctl.c | |
| parent | 17e1dd83ea21dc7aaf44590e5947338351b99bd0 (diff) | |
| download | linux-f60463195179016b2db34dd40bb72f403b836490.tar.xz | |
xfs: lift common checks into xfs_ioc_attr_list
Lift the flags and bufsize checks from both callers into the common code
in xfs_ioc_attr_list.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_ioctl.c')
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index f1f7f1aec85d..c88ed3e58f82 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -361,6 +361,18 @@ xfs_ioc_attr_list( struct xfs_attrlist *alist; int error; + if (bufsize < sizeof(struct xfs_attrlist) || + bufsize > XFS_XATTR_LIST_MAX) + return -EINVAL; + + /* + * Reject flags, only allow namespaces. + */ + if (flags & ~(ATTR_ROOT | ATTR_SECURE)) + return -EINVAL; + if (flags == (ATTR_ROOT | ATTR_SECURE)) + return -EINVAL; + /* * Validate the cursor. */ @@ -415,17 +427,6 @@ xfs_attrlist_by_handle( return -EPERM; if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) return -EFAULT; - if (al_hreq.buflen < sizeof(struct xfs_attrlist) || - al_hreq.buflen > XFS_XATTR_LIST_MAX) - return -EINVAL; - - /* - * Reject flags, only allow namespaces. - */ - if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) - return -EINVAL; - if (al_hreq.flags == (ATTR_ROOT | ATTR_SECURE)) - return -EINVAL; dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); if (IS_ERR(dentry)) |