1 files changed, 128 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/fs/ptyfs/t_nullpts.c b/contrib/netbsd-tests/fs/ptyfs/t_nullpts.c
new file mode 100644
index 0000000..9265f32
--- /dev/null
+++ b/contrib/netbsd-tests/fs/ptyfs/t_nullpts.c
@@ -0,0 +1,128 @@
+/*	$NetBSD: t_nullpts.c,v 1.5 2011/01/10 11:11:04 hannken Exp $	*/
+
+#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/ioctl.h>
+
+#include <atf-c.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <rump/rump.h>
+#include <rump/rump_syscalls.h>
+
+#include <fs/ptyfs/ptyfs.h>
+#include <miscfs/nullfs/null.h>
+
+#include "../../h_macros.h"
+
+static void
+mountptyfs(const char *mp, int flags)
+{
+	struct ptyfs_args args;
+
+	if (rump_sys_mkdir(mp, 0777) == -1) {
+		if (errno != EEXIST)
+			atf_tc_fail_errno("null create %s", mp);
+	}
+	memset(&args, 0, sizeof(args));
+	args.version = PTYFS_ARGSVERSION;
+	args.mode = 0777;
+	if (rump_sys_mount(MOUNT_PTYFS, mp, flags, &args, sizeof(args)) == -1)
+		atf_tc_fail_errno("could not mount ptyfs");
+}
+
+static void
+mountnull(const char *what, const char *mp, int flags)
+{
+	struct null_args nargs;
+
+	if (rump_sys_mkdir(what, 0777) == -1) {
+		if (errno != EEXIST)
+			atf_tc_fail_errno("null create %s", what);
+	}
+	if (rump_sys_mkdir(mp, 0777) == -1) {
+		if (errno != EEXIST)
+			atf_tc_fail_errno("null create %s", mp);
+	}
+	memset(&nargs, 0, sizeof(nargs));
+	nargs.nulla_target = __UNCONST(what);
+	if (rump_sys_mount(MOUNT_NULL, mp, flags, &nargs, sizeof(nargs)) == -1)
+		atf_tc_fail_errno("could not mount nullfs");
+}
+
+ATF_TC(nullrevoke);
+ATF_TC_HEAD(nullrevoke, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "null mount ptyfs and revoke");
+}
+
+ATF_TC_BODY(nullrevoke, tc)
+{
+	char path[MAXPATHLEN];
+	struct ptmget ptg;
+	int ptm;
+
+	rump_init();
+
+	/*
+	 * mount /dev/pts
+	 */
+	mountptyfs("/dev/pts", 0);
+
+	/*
+	 * null mount /dev/pts to /null/dev/pts
+	 */
+	if (rump_sys_mkdir("/null", 0777) == -1) {
+		if (errno != EEXIST)
+			atf_tc_fail_errno("null create /null");
+	}
+	if (rump_sys_mkdir("/null/dev", 0777) == -1) {
+		if (errno != EEXIST)
+			atf_tc_fail_errno("null create /null/dev");
+	}
+
+	mountnull("/dev/pts", "/null/dev/pts", 0);
+
+	/*
+	 * get slave/master pair.
+	 */
+	ptm = rump_sys_open("/dev/ptm", O_RDWR);
+	if (rump_sys_ioctl(ptm, TIOCPTMGET, &ptg) == -1)
+		atf_tc_fail_errno("get pty");
+
+	/*
+	 * Build nullfs path to slave.
+	 */
+	strcpy(path, "/null");
+	strcat(path, ptg.sn);
+
+	/*
+	 * Open slave tty via nullfs.
+	 */
+	if (rump_sys_open(path, O_RDWR) == -1)
+		atf_tc_fail_errno("slave null open");
+
+	/*
+	 * Close slave opened with /dev/ptm.  Need purely non-null refs to it.
+	 */
+	rump_sys_close(ptg.sfd);
+
+	/* revoke slave tty. */
+	rump_sys_revoke(path);
+
+	/* done */
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, nullrevoke);
+
+	return atf_no_error();
+}