Add another flags argument to vn_open_cred. Use it to specify that some

vn_open_cred invocations shall not audit namei path.

In particular, specify VN_OPEN_NOAUDIT for dotdot lookup performed by
default implementation of vop_vptocnp, and for the open done for core
file. vn_fullpath is called from the audit code, and vn_open there need
to disable audit to avoid infinite recursion. Core file is created on
return to user mode, that, in particular, happens during syscall return.
The creation of the core file is audited by direct calls, and we do not
want to overwrite audit information for syscall.

Reported, reviewed and tested by: rwatson

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/cddl/compat/opensolaris/sys/vnode.h b/sys/cddl/compat/opensolaris/sys/vnode.h
index 44741d2250bb..bf11e674ea67 100644
--- a/sys/cddl/compat/opensolaris/sys/vnode.h
+++ b/sys/cddl/compat/opensolaris/sys/vnode.h
@@ -182,7 +182,7 @@ vn_openat(char *pnamep, enum uio_seg seg, int filemode, int createmode,
 		vref(startvp);
 	NDINIT_ATVP(&nd, operation, MPSAFE, UIO_SYSSPACE, pnamep, startvp, td);
 	filemode |= O_NOFOLLOW;
-	error = vn_open_cred(&nd, &filemode, createmode, td->td_ucred, NULL);
+	error = vn_open_cred(&nd, &filemode, createmode, 0, td->td_ucred, NULL);
 	NDFREE(&nd, NDF_ONLY_PNBUF);
 	if (error == 0) {
 		/* We just unlock so we hold a reference. */