minix/tests/fs/common/fstest_nfs.c

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/* $NetBSD: fstest_nfs.c,v 1.9 2011/02/28 21:08:46 pooka Exp $ */
/*
* Copyright (c) 2010 The NetBSD Foundation, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/statvfs.h>
#include <sys/wait.h>
#include <assert.h>
#include <atf-c.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <pthread.h>
#include <puffs.h>
#include <puffsdump.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <rump/rump.h>
#include <rump/rump_syscalls.h>
#include "h_fsmacros.h"
#include "mount_nfs.h"
#include "../../net/config/netconfig.c"
#define SERVERADDR "10.3.2.1"
#define SERVERROADDR "10.4.2.1"
#define CLIENTADDR "10.3.2.2"
#define CLIENTROADDR "10.4.2.2"
#define NETNETMASK "255.255.255.0"
#define EXPORTPATH "/myexport"
static void
childfail(int status)
{
atf_tc_fail("child died");
}
/* fork rump nfsd, configure interface */
static int
donewfs(const atf_tc_t *tc, void **argp,
const char *image, off_t size, void *fspriv)
{
const char *srcdir;
char *nfsdargv[16];
char nfsdpath[MAXPATHLEN];
char imagepath[MAXPATHLEN];
char ethername[MAXPATHLEN], ethername_ro[MAXPATHLEN];
char ifname[IFNAMSIZ], ifname_ro[IFNAMSIZ];
char cwd[MAXPATHLEN];
struct nfstestargs *args;
pid_t childpid;
int pipes[2];
int devnull;
/*
* First, we start the nfs service.
*/
srcdir = atf_tc_get_config_var(tc, "srcdir");
sprintf(nfsdpath, "%s/../nfs/nfsservice/rumpnfsd", srcdir);
sprintf(ethername, "/%s/%s.etherbus", getcwd(cwd, sizeof(cwd)), image);
sprintf(ethername_ro, "%s_ro", ethername);
sprintf(imagepath, "/%s/%s", cwd, image);
nfsdargv[0] = nfsdpath;
nfsdargv[1] = ethername;
nfsdargv[2] = ethername_ro;
nfsdargv[3] = __UNCONST(SERVERADDR);
nfsdargv[4] = __UNCONST(SERVERROADDR);
nfsdargv[5] = __UNCONST(NETNETMASK);
nfsdargv[6] = __UNCONST(EXPORTPATH);
nfsdargv[7] = imagepath;
nfsdargv[8] = NULL;
signal(SIGCHLD, childfail);
if (pipe(pipes) == -1)
return errno;
switch ((childpid = fork())) {
case 0:
if (chdir(dirname(nfsdpath)) == -1)
err(1, "chdir");
close(pipes[0]);
if (dup2(pipes[1], 3) == -1)
err(1, "dup2");
if (execvp(nfsdargv[0], nfsdargv) == -1)
err(1, "execvp");
case -1:
return errno;
default:
close(pipes[1]);
break;
}
/*
* Ok, nfsd has been run. The following sleep helps with the
* theoretical problem that nfsd can't start fast enough to
* process our mount request and we end up doing a timeout
* before the mount. This would take several seconds. So
* try to make sure nfsd is up&running already at this stage.
*/
if (read(pipes[0], &devnull, 4) == -1)
return errno;
/*
* Configure our networking interface.
*/
rump_init();
netcfg_rump_makeshmif(ethername, ifname);
netcfg_rump_if(ifname, CLIENTADDR, NETNETMASK);
netcfg_rump_makeshmif(ethername_ro, ifname_ro);
netcfg_rump_if(ifname_ro, CLIENTROADDR, NETNETMASK);
/*
* That's it. The rest is done in mount, since we don't have
* the mountpath available here.
*/
args = malloc(sizeof(*args));
if (args == NULL)
return errno;
memset(args, 0, sizeof(*args));
args->ta_childpid = childpid;
strcpy(args->ta_ethername, ethername);
*argp = args;
return 0;
}
int
nfs_fstest_newfs(const atf_tc_t *tc, void **argp,
const char *image, off_t size, void *fspriv)
{
return donewfs(tc, argp, image, size, fspriv);
}
int
nfsro_fstest_newfs(const atf_tc_t *tc, void **argp,
const char *image, off_t size, void *fspriv)
{
return donewfs(tc, argp, image, size, fspriv);
}
/* mount the file system */
static int
domount(const atf_tc_t *tc, void *arg, const char *serverpath,
const char *path, int flags)
{
char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
const char *nfscliargs[] = {
"nfsclient",
serverpath,
path,
NULL,
};
struct nfs_args args;
int mntflags;
if (rump_sys_mkdir(path, 0777) == -1)
return errno;
/* XXX: atf does not reset values */
optind = 1;
opterr = 1;
/*
* We use nfs parseargs here, since as a side effect it
* takes care of the RPC hulabaloo.
*/
mount_nfs_parseargs(__arraycount(nfscliargs)-1, __UNCONST(nfscliargs),
&args, &mntflags, canon_dev, canon_dir);
if (rump_sys_mount(MOUNT_NFS, path, flags, &args, sizeof(args)) == -1) {
return errno;
}
return 0;
}
int
nfs_fstest_mount(const atf_tc_t *tc, void *arg, const char *path, int flags)
{
return domount(tc, arg, SERVERADDR ":" EXPORTPATH, path, flags);
}
/*
* This is where the magic happens!
*
* If we are mounting r/w, do the normal thing. However, if we are
* doing a r/o mount, switch use the r/o server export address
* and do a r/w mount. This way we end up testing the r/o export policy
* of the server! (yes, slightly questionable semantics, but at least
* we notice very quickly if our assumption is broken in the future ;)
*/
int
nfsro_fstest_mount(const atf_tc_t *tc, void *arg, const char *path, int flags)
{
if (flags & MNT_RDONLY) {
flags &= ~MNT_RDONLY;
return domount(tc, arg, SERVERROADDR":"EXPORTPATH, path, flags);
} else {
return domount(tc, arg, SERVERADDR":"EXPORTPATH, path, flags);
}
}
static int
dodelfs(const atf_tc_t *tc, void *arg)
{
/*
* XXX: no access to "args" since we're called from "cleanup".
* Trust atf to kill nfsd process and remove etherfile.
*/
#if 0
/*
* It's highly expected that the child will die next, so we
* don't need that information anymore thank you very many.
*/
signal(SIGCHLD, SIG_IGN);
/*
* Just KILL it. Sending it SIGTERM first causes it to try
* to send some unmount RPCs, leading to sticky situations.
*/
kill(args->ta_childpid, SIGKILL);
wait(&status);
/* remove ethernet bus */
if (unlink(args->ta_ethername) == -1)
atf_tc_fail_errno("unlink ethername");
#endif
return 0;
}
int
nfs_fstest_delfs(const atf_tc_t *tc, void *arg)
{
return dodelfs(tc, arg);
}
int
nfsro_fstest_delfs(const atf_tc_t *tc, void *arg)
{
return dodelfs(tc, arg);
}
static int
dounmount(const atf_tc_t *tc, const char *path, int flags)
{
int status, i, sverrno;
/*
* NFS handles sillyrenames in an workqueue. Some of them might
* be still in the queue even if all user activity has ceased.
* We try to unmount for 2 seconds to give them a chance
* to flush out.
*
* PR kern/43799
*/
for (i = 0; i < 20; i++) {
if ((status = rump_sys_unmount(path, flags)) == 0)
break;
sverrno = errno;
if (sverrno != EBUSY)
break;
usleep(100000);
}
if (status == -1)
return sverrno;
if (rump_sys_rmdir(path) == -1)
return errno;
return 0;
}
int
nfs_fstest_unmount(const atf_tc_t *tc, const char *path, int flags)
{
return dounmount(tc, path, flags);
}
int
nfsro_fstest_unmount(const atf_tc_t *tc, const char *path, int flags)
{
return dounmount(tc, path, flags);
}