NetBSD-5.0.2/sbin/mount_nfs/mount_nfs.c
/* $NetBSD: mount_nfs.c,v 1.64 2008/10/16 09:12:54 pooka Exp $ */
/*
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
#else
__RCSID("$NetBSD: mount_nfs.c,v 1.64 2008/10/16 09:12:54 pooka Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <syslog.h>
#ifdef ISO
#include <netiso/iso.h>
#endif
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsmount.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include <mntopts.h>
#include "mountprog.h"
#include "mount_nfs.h"
#define ALTF_BG 0x00000001
#define ALTF_CONN 0x00000002
#define ALTF_DUMBTIMR 0x00000004
#define ALTF_INTR 0x00000008
#define ALTF_NFSV3 0x00000020
#define ALTF_RDIRPLUS 0x00000040
#define ALTF_MNTUDP 0x00000080
#define ALTF_NORESPORT 0x00000100
#define ALTF_SEQPACKET 0x00000200
#define ALTF_NQNFS 0x00000400
#define ALTF_SOFT 0x00000800
#define ALTF_TCP 0x00001000
#define ALTF_NFSV2 0x00002000
#define ALTF_PORT 0x00004000
#define ALTF_RSIZE 0x00008000
#define ALTF_WSIZE 0x00010000
#define ALTF_RDIRSIZE 0x00020000
#define ALTF_MAXGRPS 0x00040000
#define ALTF_LEASETERM 0x00080000
#define ALTF_READAHEAD 0x00100000
#define ALTF_DEADTHRESH 0x00200000
#define ALTF_TIMEO 0x00400000
#define ALTF_RETRANS 0x00800000
static const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_FORCE,
MOPT_UPDATE,
MOPT_GETARGS,
{ "bg", 0, ALTF_BG, 1 },
{ "conn", 0, ALTF_CONN, 1 },
{ "dumbtimer", 0, ALTF_DUMBTIMR, 1 },
{ "intr", 0, ALTF_INTR, 1 },
{ "nfsv3", 0, ALTF_NFSV3, 1 },
{ "rdirplus", 0, ALTF_RDIRPLUS, 1 },
{ "mntudp", 0, ALTF_MNTUDP, 1 },
{ "noresport", 0, ALTF_NORESPORT, 1 },
#ifdef ISO
{ "seqpacket", 0, ALTF_SEQPACKET, 1 },
#endif
{ "nqnfs", 0, ALTF_NQNFS, 1 },
{ "soft", 0, ALTF_SOFT, 1 },
{ "tcp", 0, ALTF_TCP, 1 },
{ "nfsv2", 0, ALTF_NFSV2, 1 },
{ "port", 0, ALTF_PORT, 1 },
{ "rsize", 0, ALTF_RSIZE, 1 },
{ "wsize", 0, ALTF_WSIZE, 1 },
{ "rdirsize", 0, ALTF_RDIRSIZE, 1 },
{ "maxgrps", 0, ALTF_MAXGRPS, 1 },
{ "leaseterm", 0, ALTF_LEASETERM, 1 },
{ "readahead", 0, ALTF_READAHEAD, 1 },
{ "deadthresh", 0, ALTF_DEADTHRESH, 1 },
{ "timeo", 0, ALTF_TIMEO, 1 },
MOPT_NULL,
};
struct nfs_args nfsdefargs = {
NFS_ARGSVERSION,
(struct sockaddr *)0,
sizeof (struct sockaddr_in),
SOCK_DGRAM,
0,
(u_char *)0,
0,
NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT,
NFS_WSIZE,
NFS_RSIZE,
NFS_READDIRSIZE,
10,
NFS_RETRANS,
NFS_MAXGRPS,
NFS_DEFRAHEAD,
0, /* Ignored; lease term */
NFS_DEFDEADTHRESH,
(char *)0,
};
#define DEF_RETRY 10000
int retrycnt = DEF_RETRY;
int opflags = 0;
int force2 = 0;
int force3 = 0;
int mnttcp_ok = 1;
int port = 0;
static void shownfsargs(const struct nfs_args *);
#ifdef ISO
static struct iso_addr *iso_addr(const char *);
#endif
int mount_nfs(int argc, char **argv);
/* void set_rpc_maxgrouplist(int); */
static void usage(void);
#ifndef MOUNT_NOMAIN
int
main(int argc, char **argv)
{
setprogname(argv[0]);
return mount_nfs(argc, argv);
}
#endif
void
mount_nfs_dogetargs(struct nfs_args *nfsargsp, int mntflags, const char *spec)
{
struct sockaddr_storage sa;
char *tspec;
if ((mntflags & MNT_GETARGS) != 0) {
memset(&sa, 0, sizeof(sa));
nfsargsp->addr = (struct sockaddr *)&sa;
nfsargsp->addrlen = sizeof(sa);
} else {
if ((tspec = strdup(spec)) == NULL) {
err(1, "strdup");
}
if (!getnfsargs(tspec, nfsargsp)) {
exit(1);
}
free(tspec);
}
}
void
mount_nfs_parseargs(int argc, char *argv[],
struct nfs_args *nfsargsp, int *mntflags,
char *spec, char *name)
{
char *p;
int altflags, num;
int c;
mntoptparse_t mp;
*mntflags = 0;
altflags = 0;
memset(nfsargsp, 0, sizeof(*nfsargsp));
*nfsargsp = nfsdefargs;
while ((c = getopt(argc, argv,
"23a:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UX")) != -1)
switch (c) {
case '3':
case 'q':
if (force2)
errx(1, "conflicting version options");
force3 = 1;
break;
case '2':
if (force3)
errx(1, "conflicting version options");
force2 = 1;
nfsargsp->flags &= ~NFSMNT_NFSV3;
break;
case 'a':
num = strtol(optarg, &p, 10);
if (*p || num < 0)
errx(1, "illegal -a value -- %s", optarg);
nfsargsp->readahead = num;
nfsargsp->flags |= NFSMNT_READAHEAD;
break;
case 'b':
opflags |= BGRND;
break;
case 'c':
nfsargsp->flags |= NFSMNT_NOCONN;
break;
case 'C':
nfsargsp->flags &= ~NFSMNT_NOCONN;
break;
case 'D':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -D value -- %s", optarg);
nfsargsp->deadthresh = num;
nfsargsp->flags |= NFSMNT_DEADTHRESH;
break;
case 'd':
nfsargsp->flags |= NFSMNT_DUMBTIMR;
break;
#if 0 /* XXXX */
case 'g':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -g value -- %s", optarg);
set_rpc_maxgrouplist(num);
nfsargsp->maxgrouplist = num;
nfsargsp->flags |= NFSMNT_MAXGRPS;
break;
#endif
case 'I':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -I value -- %s", optarg);
nfsargsp->readdirsize = num;
nfsargsp->flags |= NFSMNT_READDIRSIZE;
break;
case 'i':
nfsargsp->flags |= NFSMNT_INT;
break;
case 'L':
/* ignore */
break;
case 'l':
nfsargsp->flags |= NFSMNT_RDIRPLUS;
break;
case 'o':
mp = getmntopts(optarg, mopts, mntflags, &altflags);
if (mp == NULL)
err(1, "getmntopts");
if (altflags & ALTF_BG)
opflags |= BGRND;
if (altflags & ALTF_CONN)
nfsargsp->flags &= ~NFSMNT_NOCONN;
if (altflags & ALTF_DUMBTIMR)
nfsargsp->flags |= NFSMNT_DUMBTIMR;
if (altflags & ALTF_INTR)
nfsargsp->flags |= NFSMNT_INT;
if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) {
if (force2)
errx(1, "conflicting version options");
force3 = 1;
}
if (altflags & ALTF_NFSV2) {
if (force3)
errx(1, "conflicting version options");
force2 = 1;
nfsargsp->flags &= ~NFSMNT_NFSV3;
}
if (altflags & ALTF_RDIRPLUS)
nfsargsp->flags |= NFSMNT_RDIRPLUS;
if (altflags & ALTF_MNTUDP)
mnttcp_ok = 0;
if (altflags & ALTF_NORESPORT)
nfsargsp->flags &= ~NFSMNT_RESVPORT;
#ifdef ISO
if (altflags & ALTF_SEQPACKET)
nfsargsp->sotype = SOCK_SEQPACKET;
#endif
if (altflags & ALTF_SOFT)
nfsargsp->flags |= NFSMNT_SOFT;
if (altflags & ALTF_TCP) {
nfsargsp->sotype = SOCK_STREAM;
}
if (altflags & ALTF_PORT) {
port = getmntoptnum(mp, "port");
}
if (altflags & ALTF_RSIZE) {
nfsargsp->rsize =
(int)getmntoptnum(mp, "rsize");
nfsargsp->flags |= NFSMNT_RSIZE;
}
if (altflags & ALTF_WSIZE) {
nfsargsp->wsize =
(int)getmntoptnum(mp, "wsize");
nfsargsp->flags |= NFSMNT_WSIZE;
}
if (altflags & ALTF_RDIRSIZE) {
nfsargsp->rsize =
(int)getmntoptnum(mp, "rdirsize");
nfsargsp->flags |= NFSMNT_READDIRSIZE;
}
#if 0
if (altflags & ALTF_MAXGRPS) {
set_rpc_maxgrouplist(num);
nfsargsp->maxgrouplist =
(int)getmntoptnum(mp, "maxgrps");
nfsargsp->flags |= NFSMNT_MAXGRPS;
}
#endif
if (altflags & ALTF_LEASETERM) {
nfsargsp->leaseterm =
(int)getmntoptnum(mp, "leaseterm");
nfsargsp->flags |= NFSMNT_LEASETERM;
}
if (altflags & ALTF_READAHEAD) {
nfsargsp->readahead =
(int)getmntoptnum(mp, "readahead");
nfsargsp->flags |= NFSMNT_READAHEAD;
}
if (altflags & ALTF_DEADTHRESH) {
nfsargsp->deadthresh =
(int)getmntoptnum(mp, "deadthresh");
nfsargsp->flags |= NFSMNT_DEADTHRESH;
}
if (altflags & ALTF_TIMEO) {
nfsargsp->timeo =
(int)getmntoptnum(mp, "timeo");
nfsargsp->flags |= NFSMNT_TIMEO;
}
if (altflags & ALTF_RETRANS) {
nfsargsp->retrans =
(int)getmntoptnum(mp, "retrans");
nfsargsp->flags |= NFSMNT_RETRANS;
}
altflags = 0;
freemntopts(mp);
break;
case 'P':
nfsargsp->flags |= NFSMNT_RESVPORT;
break;
case 'p':
nfsargsp->flags &= ~NFSMNT_RESVPORT;
break;
case 'R':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -R value -- %s", optarg);
retrycnt = num;
break;
case 'r':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -r value -- %s", optarg);
nfsargsp->rsize = num;
nfsargsp->flags |= NFSMNT_RSIZE;
break;
#ifdef ISO
case 'S':
nfsargsp->sotype = SOCK_SEQPACKET;
break;
#endif
case 's':
nfsargsp->flags |= NFSMNT_SOFT;
break;
case 'T':
nfsargsp->sotype = SOCK_STREAM;
break;
case 't':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -t value -- %s", optarg);
nfsargsp->timeo = num;
nfsargsp->flags |= NFSMNT_TIMEO;
break;
case 'w':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -w value -- %s", optarg);
nfsargsp->wsize = num;
nfsargsp->flags |= NFSMNT_WSIZE;
break;
case 'x':
num = strtol(optarg, &p, 10);
if (*p || num <= 0)
errx(1, "illegal -x value -- %s", optarg);
nfsargsp->retrans = num;
nfsargsp->flags |= NFSMNT_RETRANS;
break;
case 'X':
nfsargsp->flags |= NFSMNT_XLATECOOKIE;
break;
case 'U':
mnttcp_ok = 0;
break;
default:
usage();
break;
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
strlcpy(spec, *argv++, MAXPATHLEN);
pathadj(*argv, name);
mount_nfs_dogetargs(nfsargsp, *mntflags, spec);
}
int
mount_nfs(int argc, char *argv[])
{
char spec[MAXPATHLEN], name[MAXPATHLEN];
struct nfs_args args;
int mntflags;
int retval;
mount_nfs_parseargs(argc, argv, &args, &mntflags, spec, name);
retry:
if ((retval = mount(MOUNT_NFS, name, mntflags,
&args, sizeof args)) == -1) {
/* Did we just default to v3 on a v2-only kernel?
* If so, default to v2 & try again */
if (errno == EPROGMISMATCH &&
(args.flags & NFSMNT_NFSV3) != 0 && !force3) {
/*
* fall back to v2. XXX lack of V3 umount.
*/
args.flags &= ~NFSMNT_NFSV3;
mount_nfs_dogetargs(&args, mntflags, spec);
goto retry;
}
}
if (retval == -1)
err(1, "%s on %s", spec, name);
if (mntflags & MNT_GETARGS) {
shownfsargs(&args);
return (0);
}
exit(0);
}
static void
shownfsargs(const struct nfs_args *nfsargsp)
{
char fbuf[2048];
char host[NI_MAXHOST], serv[NI_MAXSERV];
int error;
(void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS, nfsargsp->flags);
if (nfsargsp->addr != NULL) {
error = getnameinfo(nfsargsp->addr, nfsargsp->addrlen, host,
sizeof(host), serv, sizeof(serv),
NI_NUMERICHOST | NI_NUMERICSERV);
if (error != 0)
warnx("getnameinfo: %s", gai_strerror(error));
} else
error = -1;
if (error == 0)
printf("addr=%s, port=%s, addrlen=%d, ",
host, serv, nfsargsp->addrlen);
printf("sotype=%d, proto=%d, fhsize=%d, "
"flags=%s, wsize=%d, rsize=%d, readdirsize=%d, timeo=%d, "
"retrans=%d, maxgrouplist=%d, readahead=%d, leaseterm=%d, "
"deadthresh=%d\n",
nfsargsp->sotype,
nfsargsp->proto,
nfsargsp->fhsize,
fbuf,
nfsargsp->wsize,
nfsargsp->rsize,
nfsargsp->readdirsize,
nfsargsp->timeo,
nfsargsp->retrans,
nfsargsp->maxgrouplist,
nfsargsp->readahead,
nfsargsp->leaseterm,
nfsargsp->deadthresh);
}
static void
usage(void)
{
(void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n%s\n",
"[-23bCcdilPpqsTUX] [-a maxreadahead] [-D deadthresh]",
"\t[-g maxgroups] [-I readdirsize] [-L leaseterm]",
"\t[-o options] [-R retrycnt] [-r readsize] [-t timeout]",
"\t[-w writesize] [-x retrans]",
"\trhost:path node");
exit(1);
}