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/* $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();
}
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