129 lines
2.5 KiB
C
129 lines
2.5 KiB
C
/* $NetBSD: t_nullpts.c,v 1.6 2017/01/13 21:30:40 christos Exp $ */
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/ioctl.h>
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#include <atf-c.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <rump/rump.h>
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#include <rump/rump_syscalls.h>
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#include <fs/ptyfs/ptyfs.h>
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#include <miscfs/nullfs/null.h>
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#include "h_macros.h"
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static void
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mountptyfs(const char *mp, int flags)
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{
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struct ptyfs_args args;
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if (rump_sys_mkdir(mp, 0777) == -1) {
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if (errno != EEXIST)
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atf_tc_fail_errno("null create %s", mp);
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}
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memset(&args, 0, sizeof(args));
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args.version = PTYFS_ARGSVERSION;
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args.mode = 0777;
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if (rump_sys_mount(MOUNT_PTYFS, mp, flags, &args, sizeof(args)) == -1)
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atf_tc_fail_errno("could not mount ptyfs");
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}
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static void
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mountnull(const char *what, const char *mp, int flags)
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{
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struct null_args nargs;
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if (rump_sys_mkdir(what, 0777) == -1) {
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if (errno != EEXIST)
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atf_tc_fail_errno("null create %s", what);
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}
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if (rump_sys_mkdir(mp, 0777) == -1) {
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if (errno != EEXIST)
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atf_tc_fail_errno("null create %s", mp);
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}
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memset(&nargs, 0, sizeof(nargs));
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nargs.nulla_target = __UNCONST(what);
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if (rump_sys_mount(MOUNT_NULL, mp, flags, &nargs, sizeof(nargs)) == -1)
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atf_tc_fail_errno("could not mount nullfs");
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}
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ATF_TC(nullrevoke);
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ATF_TC_HEAD(nullrevoke, tc)
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{
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atf_tc_set_md_var(tc, "descr", "null mount ptyfs and revoke");
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}
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ATF_TC_BODY(nullrevoke, tc)
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{
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char path[MAXPATHLEN];
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struct ptmget ptg;
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int ptm;
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rump_init();
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/*
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* mount /dev/pts
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*/
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mountptyfs("/dev/pts", 0);
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/*
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* null mount /dev/pts to /null/dev/pts
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*/
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if (rump_sys_mkdir("/null", 0777) == -1) {
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if (errno != EEXIST)
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atf_tc_fail_errno("null create /null");
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}
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if (rump_sys_mkdir("/null/dev", 0777) == -1) {
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if (errno != EEXIST)
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atf_tc_fail_errno("null create /null/dev");
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}
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mountnull("/dev/pts", "/null/dev/pts", 0);
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/*
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* get slave/master pair.
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*/
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ptm = rump_sys_open("/dev/ptm", O_RDWR);
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if (rump_sys_ioctl(ptm, TIOCPTMGET, &ptg) == -1)
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atf_tc_fail_errno("get pty");
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/*
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* Build nullfs path to slave.
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*/
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strcpy(path, "/null");
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strcat(path, ptg.sn);
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/*
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* Open slave tty via nullfs.
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*/
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if (rump_sys_open(path, O_RDWR) == -1)
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atf_tc_fail_errno("slave null open");
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/*
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* Close slave opened with /dev/ptm. Need purely non-null refs to it.
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*/
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rump_sys_close(ptg.sfd);
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/* revoke slave tty. */
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rump_sys_revoke(path);
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/* done */
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, nullrevoke);
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return atf_no_error();
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}
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