diff options
Diffstat (limited to 'sys/kern/vfs_syscalls.c')
| -rw-r--r-- | sys/kern/vfs_syscalls.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 9d5380a..1406e0f 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -1578,7 +1578,15 @@ again: vrele(nd.ni_vp); error = EEXIST; } else if ((error = vn_lock(vp, LK_EXCLUSIVE)) == 0) { - error = can_hardlink(vp, td->td_ucred); + /* + * Check for cross-device links. No need to + * recheck vp->v_type, since it cannot change + * for non-doomed vnode. + */ + if (nd.ni_dvp->v_mount != vp->v_mount) + error = EXDEV; + else + error = can_hardlink(vp, td->td_ucred); if (error == 0) #ifdef MAC error = mac_vnode_check_link(td->td_ucred, |
