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/* $NetBSD: t_basic.c,v 1.3 2010/06/09 08:37:16 pooka Exp $ */
#include <sys/types.h>
#include <sys/mount.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 <miscfs/nullfs/null.h>
#include <fs/tmpfs/tmpfs_args.h>
#include "../../h_macros.h"
ATF_TC(basic);
ATF_TC_HEAD(basic, tc)
{
atf_tc_set_md_var(tc, "descr", "basic nullfs functionality");
}
#define MSTR "magic bus"
static void
xput_tfile(const char *path, const char *mstr)
{
int fd;
fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777);
if (fd == -1)
atf_tc_fail_errno("create %s", path);
if (rump_sys_write(fd, MSTR, sizeof(MSTR)) != sizeof(MSTR))
atf_tc_fail_errno("write to testfile");
rump_sys_close(fd);
}
static int
xread_tfile(const char *path, const char *mstr)
{
char buf[128];
int fd;
fd = rump_sys_open(path, O_RDONLY);
if (fd == -1)
return errno;
if (rump_sys_read(fd, buf, sizeof(buf)) == -1)
atf_tc_fail_errno("read tfile");
rump_sys_close(fd);
if (strcmp(buf, MSTR) == 0)
return 0;
return EPROGMISMATCH;
}
static void
mountnull(const char *what, const char *mp, int flags)
{
struct null_args nargs;
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_BODY(basic, tc)
{
struct tmpfs_args targs;
struct stat sb;
int error;
rump_init();
if (rump_sys_mkdir("/td1", 0777) == -1)
atf_tc_fail_errno("mp1");
if (rump_sys_mkdir("/td2", 0777) == -1)
atf_tc_fail_errno("mp1");
/* use tmpfs because rumpfs doesn't support regular files */
memset(&targs, 0, sizeof(targs));
targs.ta_version = TMPFS_ARGS_VERSION;
targs.ta_root_mode = 0777;
if (rump_sys_mount(MOUNT_TMPFS, "/td1", 0, &targs, sizeof(targs)) == -1)
atf_tc_fail_errno("could not mount tmpfs td1");
mountnull("/td1", "/td2", 0);
/* test unnull -> null */
xput_tfile("/td1/tensti", "jeppe");
error = xread_tfile("/td2/tensti", "jeppe");
if (error != 0)
atf_tc_fail("null compare failed: %d (%s)",
error, strerror(error));
/* test null -> unnull */
xput_tfile("/td2/kiekko", "keppi");
error = xread_tfile("/td1/kiekko", "keppi");
if (error != 0)
atf_tc_fail("unnull compare failed: %d (%s)",
error, strerror(error));
/* test unnull -> null overwrite */
xput_tfile("/td1/tensti", "se oolannin sota");
error = xread_tfile("/td2/tensti", "se oolannin sota");
if (error != 0)
atf_tc_fail("unnull compare failed: %d (%s)",
error, strerror(error));
/* test that /td2 is unaffected in "real life" */
if (rump_sys_unmount("/td2", 0) == -1)
atf_tc_fail_errno("cannot unmount nullfs");
if ((error = rump_sys_stat("/td2/tensti", &sb)) != -1
|| errno != ENOENT) {
atf_tc_fail("stat tensti should return ENOENT, got %d", error);
}
if ((error = rump_sys_stat("/td2/kiekko", &sb)) != -1
|| errno != ENOENT) {
atf_tc_fail("stat kiekko should return ENOENT, got %d", error);
}
/* done */
}
ATF_TC(twistymount);
ATF_TC_HEAD(twistymount, tc)
{
/* this is expected to fail until the PR is fixed */
atf_tc_set_md_var(tc, "descr", "\"recursive\" mounts deadlock"
" (kern/43439)");
}
/*
* Mapping to identifiers in kern/43439:
* /td = /home/current/pkgsrc
* /td/dist = /home/current/pkgsrc/distiles
* /mp = /usr/pkgsrc
* /mp/dist = /usr/pkgsrc/distfiles -- "created" by first null mount
*/
ATF_TC_BODY(twistymount, tc)
{
int mkd = 0;
rump_init();
if (rump_sys_mkdir("/td", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
if (rump_sys_mkdir("/td/dist", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
if (rump_sys_mkdir("/mp", 0777) == -1)
atf_tc_fail_errno("mkdir %d", mkd++);
/* MNT_RDONLY doesn't matter, but just for compat with the PR */
mountnull("/td", "/mp", MNT_RDONLY);
mountnull("/td/dist", "/mp/dist", 0);
/* if we didn't get a locking-against-meself panic, we passed */
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, basic);
ATF_TP_ADD_TC(tp, twistymount);
return atf_no_error();
}
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