diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c index b80d03d0e9ec..d37e0662f266 100644 --- a/sys/kern/vfs_default.c +++ b/sys/kern/vfs_default.c @@ -353,6 +353,14 @@ vop_stdaccessx(struct vop_accessx_args *ap) if (accmode == 0) return (0); + /* + * Many VOP_APPEND implementations don't expect VAPPEND without VWRITE + * being set, e.g. they check whether the filesystem is read-only only + * when VWRITE is set. Make sure we don't confuse them. + */ + if (accmode & VAPPEND) + accmode |= VWRITE; + return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td)); }