519 lines
13 KiB
C
519 lines
13 KiB
C
/* $NetBSD: mount_nfs.c,v 1.75 2022/12/21 19:00:52 chs Exp $ */
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/*
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
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#else
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__RCSID("$NetBSD: mount_nfs.c,v 1.75 2022/12/21 19:00:52 chs Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <syslog.h>
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#include <rpc/rpc.h>
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#include <nfs/rpcv2.h> /* XXX: redefines enums */
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsmount.h>
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#include <arpa/inet.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 <netdb.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <util.h>
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#include <mntopts.h>
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#include "mountprog.h"
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#include "mount_nfs.h"
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#define ALTF_BG 0x00000001
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#define ALTF_CONN 0x00000002
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#define ALTF_DUMBTIMR 0x00000004
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#define ALTF_INTR 0x00000008
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#define ALTF_NOAC 0x00000010
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#define ALTF_NFSV3 0x00000020
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#define ALTF_RDIRPLUS 0x00000040
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#define ALTF_MNTUDP 0x00000080
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#define ALTF_NORESPORT 0x00000100
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#define ALTF_SEQPACKET 0x00000200
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#define ALTF_NQNFS 0x00000400
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#define ALTF_SOFT 0x00000800
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#define ALTF_TCP 0x00001000
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#define ALTF_NFSV2 0x00002000
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#define ALTF_PORT 0x00004000
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#define ALTF_RSIZE 0x00008000
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#define ALTF_WSIZE 0x00010000
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#define ALTF_RDIRSIZE 0x00020000
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#define ALTF_MAXGRPS 0x00040000
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#define ALTF_LEASETERM 0x00080000
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#define ALTF_READAHEAD 0x00100000
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#define ALTF_DEADTHRESH 0x00200000
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#define ALTF_TIMEO 0x00400000
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#define ALTF_RETRANS 0x00800000
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#define ALTF_UDP 0x01000000
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static const struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_FORCE,
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MOPT_UPDATE,
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MOPT_GETARGS,
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{ "bg", 0, ALTF_BG, 1 },
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{ "conn", 0, ALTF_CONN, 1 },
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{ "dumbtimer", 0, ALTF_DUMBTIMR, 1 },
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{ "intr", 0, ALTF_INTR, 1 },
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{ "ac", 1, ALTF_NOAC, 1 },
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{ "nfsv3", 0, ALTF_NFSV3, 1 },
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{ "rdirplus", 0, ALTF_RDIRPLUS, 1 },
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{ "mntudp", 0, ALTF_MNTUDP, 1 },
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{ "resport", 1, ALTF_NORESPORT, 1 },
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{ "nqnfs", 0, ALTF_NQNFS, 1 },
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{ "soft", 0, ALTF_SOFT, 1 },
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{ "tcp", 0, ALTF_TCP, 1 },
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{ "udp", 0, ALTF_UDP, 1 },
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{ "nfsv2", 0, ALTF_NFSV2, 1 },
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{ "port", 0, ALTF_PORT, 1 },
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{ "rsize", 0, ALTF_RSIZE, 1 },
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{ "wsize", 0, ALTF_WSIZE, 1 },
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{ "rdirsize", 0, ALTF_RDIRSIZE, 1 },
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{ "maxgrps", 0, ALTF_MAXGRPS, 1 },
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{ "leaseterm", 0, ALTF_LEASETERM, 1 },
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{ "readahead", 0, ALTF_READAHEAD, 1 },
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{ "deadthresh", 0, ALTF_DEADTHRESH, 1 },
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{ "timeo", 0, ALTF_TIMEO, 1 },
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MOPT_NULL,
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};
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struct nfs_args nfsdefargs = {
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.version = NFS_ARGSVERSION,
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.addr = NULL,
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.addrlen = sizeof(struct sockaddr_in),
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.sotype = SOCK_STREAM,
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.proto = 0,
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.fh = NULL,
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.fhsize = 0,
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.flags = NFSMNT_NFSV3|NFSMNT_NOCONN|NFSMNT_RESVPORT,
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.wsize = NFS_WSIZE,
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.rsize = NFS_RSIZE,
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.readdirsize = NFS_READDIRSIZE,
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.timeo = 10,
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.retrans = NFS_RETRANS,
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.maxgrouplist = NFS_MAXGRPS,
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.readahead = NFS_DEFRAHEAD,
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.leaseterm = 0, /* Ignored; lease term */
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.deadthresh = NFS_DEFDEADTHRESH,
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.hostname = NULL,
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};
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static void shownfsargs(const struct nfs_args *);
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int mount_nfs(int argc, char **argv);
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/* void set_rpc_maxgrouplist(int); */
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__dead static void usage(void);
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#ifndef MOUNT_NOMAIN
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int
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main(int argc, char **argv)
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{
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setprogname(argv[0]);
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return mount_nfs(argc, argv);
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}
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#endif
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void
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mount_nfs_dogetargs(struct nfs_args *nfsargsp, int mntflags, const char *spec)
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{
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static struct sockaddr_storage sa;
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char *tspec;
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if ((mntflags & MNT_GETARGS) != 0) {
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memset(&sa, 0, sizeof(sa));
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nfsargsp->addr = (struct sockaddr *)&sa;
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nfsargsp->addrlen = sizeof(sa);
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} else {
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if ((tspec = strdup(spec)) == NULL) {
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err(EXIT_FAILURE, "strdup");
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}
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if (!getnfsargs(tspec, nfsargsp)) {
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exit(EXIT_FAILURE);
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}
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free(tspec);
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}
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}
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static int
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getnum(const char *s, int c)
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{
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char *es;
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long num = strtol(s, &es, 10);
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if (*es || num <= 0 || num > INT_MAX)
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errx(EXIT_FAILURE, "Illegal value `%s' for option -%c", s, c);
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return (int)num;
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}
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static __dead void
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conflicting(void)
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{
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errx(EXIT_FAILURE, "Conflicting version options");
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}
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void
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mount_nfs_parseargs(int argc, char *argv[],
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struct nfs_args *nfsargsp, int *mntflags,
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char *spec, char *name)
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{
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int altflags, num;
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int c;
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mntoptparse_t mp;
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*mntflags = 0;
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altflags = 0;
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memset(nfsargsp, 0, sizeof(*nfsargsp));
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*nfsargsp = nfsdefargs;
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while ((c = getopt(argc, argv,
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"23Aa:bcCdD:g:I:iKL:lm:o:PpqR:r:sTt:w:x:UuX")) != -1)
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switch (c) {
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case '3':
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case 'q':
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if (force2)
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conflicting();
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force3 = 1;
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break;
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case '2':
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if (force3)
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conflicting();
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force2 = 1;
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nfsargsp->flags &= ~NFSMNT_NFSV3;
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break;
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case 'A':
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nfsargsp->flags |= NFSMNT_NOAC;
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break;
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case 'a':
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nfsargsp->readahead = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_READAHEAD;
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break;
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case 'b':
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opflags |= BGRND;
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break;
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case 'c':
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nfsargsp->flags |= NFSMNT_NOCONN;
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break;
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case 'C':
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nfsargsp->flags &= ~NFSMNT_NOCONN;
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break;
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case 'D':
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nfsargsp->deadthresh = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_DEADTHRESH;
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break;
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case 'd':
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nfsargsp->flags |= NFSMNT_DUMBTIMR;
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break;
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case 'g':
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num = getnum(optarg, c);
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set_rpc_maxgrouplist(num);
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nfsargsp->maxgrouplist = num;
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nfsargsp->flags |= NFSMNT_MAXGRPS;
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break;
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case 'I':
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nfsargsp->readdirsize = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_READDIRSIZE;
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break;
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case 'i':
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nfsargsp->flags |= NFSMNT_INT;
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break;
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case 'L':
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/* ignore */
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break;
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case 'l':
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nfsargsp->flags |= NFSMNT_RDIRPLUS;
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break;
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case 'o':
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mp = getmntopts(optarg, mopts, mntflags, &altflags);
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if (mp == NULL)
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err(EXIT_FAILURE, "getmntopts");
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if (altflags & ALTF_BG)
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opflags |= BGRND;
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if (altflags & ALTF_CONN)
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nfsargsp->flags &= ~NFSMNT_NOCONN;
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if (altflags & ALTF_DUMBTIMR)
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nfsargsp->flags |= NFSMNT_DUMBTIMR;
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if (altflags & ALTF_INTR)
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nfsargsp->flags |= NFSMNT_INT;
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if (altflags & ALTF_NOAC)
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nfsargsp->flags |= NFSMNT_NOAC;
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if (altflags & (ALTF_NFSV3|ALTF_NQNFS)) {
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if (force2)
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conflicting();
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force3 = 1;
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}
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if (altflags & ALTF_NFSV2) {
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if (force3)
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conflicting();
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force2 = 1;
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nfsargsp->flags &= ~NFSMNT_NFSV3;
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}
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if (altflags & ALTF_RDIRPLUS)
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nfsargsp->flags |= NFSMNT_RDIRPLUS;
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if (altflags & ALTF_MNTUDP)
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mnttcp_ok = 0;
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if (altflags & ALTF_NORESPORT)
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nfsargsp->flags &= ~NFSMNT_RESVPORT;
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if (altflags & ALTF_SOFT)
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nfsargsp->flags |= NFSMNT_SOFT;
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if (altflags & ALTF_UDP) {
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nfsargsp->sotype = SOCK_DGRAM;
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}
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/*
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* After UDP, because TCP overrides if both
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* are present.
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*/
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if (altflags & ALTF_TCP) {
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nfsargsp->sotype = SOCK_STREAM;
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}
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if (altflags & ALTF_PORT) {
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port = (int)getmntoptnum(mp, "port");
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}
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if (altflags & ALTF_RSIZE) {
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nfsargsp->rsize =
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(int)getmntoptnum(mp, "rsize");
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nfsargsp->flags |= NFSMNT_RSIZE;
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}
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if (altflags & ALTF_WSIZE) {
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nfsargsp->wsize =
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(int)getmntoptnum(mp, "wsize");
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nfsargsp->flags |= NFSMNT_WSIZE;
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}
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if (altflags & ALTF_RDIRSIZE) {
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nfsargsp->rsize =
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(int)getmntoptnum(mp, "rdirsize");
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nfsargsp->flags |= NFSMNT_READDIRSIZE;
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}
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#if 0
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if (altflags & ALTF_MAXGRPS) {
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set_rpc_maxgrouplist(num);
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nfsargsp->maxgrouplist =
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(int)getmntoptnum(mp, "maxgrps");
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nfsargsp->flags |= NFSMNT_MAXGRPS;
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}
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#endif
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if (altflags & ALTF_LEASETERM) {
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nfsargsp->leaseterm =
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(int)getmntoptnum(mp, "leaseterm");
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nfsargsp->flags |= NFSMNT_LEASETERM;
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}
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if (altflags & ALTF_READAHEAD) {
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nfsargsp->readahead =
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(int)getmntoptnum(mp, "readahead");
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nfsargsp->flags |= NFSMNT_READAHEAD;
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}
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if (altflags & ALTF_DEADTHRESH) {
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nfsargsp->deadthresh =
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(int)getmntoptnum(mp, "deadthresh");
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nfsargsp->flags |= NFSMNT_DEADTHRESH;
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}
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if (altflags & ALTF_TIMEO) {
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nfsargsp->timeo =
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(int)getmntoptnum(mp, "timeo");
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nfsargsp->flags |= NFSMNT_TIMEO;
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}
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if (altflags & ALTF_RETRANS) {
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nfsargsp->retrans =
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(int)getmntoptnum(mp, "retrans");
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nfsargsp->flags |= NFSMNT_RETRANS;
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}
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altflags = 0;
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freemntopts(mp);
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break;
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case 'P':
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nfsargsp->flags |= NFSMNT_RESVPORT;
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break;
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case 'p':
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nfsargsp->flags &= ~NFSMNT_RESVPORT;
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break;
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case 'R':
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retrycnt = getnum(optarg, c);
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break;
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case 'r':
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nfsargsp->rsize = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_RSIZE;
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break;
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case 's':
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nfsargsp->flags |= NFSMNT_SOFT;
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break;
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case 'T':
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nfsargsp->sotype = SOCK_STREAM;
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break;
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case 't':
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nfsargsp->timeo = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_TIMEO;
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break;
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case 'w':
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nfsargsp->wsize = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_WSIZE;
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break;
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case 'x':
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nfsargsp->retrans = getnum(optarg, c);
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nfsargsp->flags |= NFSMNT_RETRANS;
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break;
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case 'X':
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nfsargsp->flags |= NFSMNT_XLATECOOKIE;
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break;
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case 'u':
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nfsargsp->sotype = SOCK_DGRAM;
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break;
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case 'U':
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mnttcp_ok = 0;
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break;
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default:
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usage();
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break;
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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usage();
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strlcpy(spec, *argv++, MAXPATHLEN);
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pathadj(*argv, name);
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mount_nfs_dogetargs(nfsargsp, *mntflags, spec);
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}
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int
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mount_nfs(int argc, char *argv[])
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{
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char spec[MAXPATHLEN], name[MAXPATHLEN];
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struct nfs_args args;
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int mntflags;
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int retval;
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mount_nfs_parseargs(argc, argv, &args, &mntflags, spec, name);
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retry:
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if ((retval = mount(MOUNT_NFS, name, mntflags,
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&args, sizeof args)) == -1) {
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/* Did we just default to v3 on a v2-only kernel?
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* If so, default to v2 & try again */
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if (errno == EPROGMISMATCH &&
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(args.flags & NFSMNT_NFSV3) != 0 && !force3) {
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/*
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* fall back to v2. XXX lack of V3 umount.
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*/
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args.flags &= ~NFSMNT_NFSV3;
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mount_nfs_dogetargs(&args, mntflags, spec);
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goto retry;
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}
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}
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if (retval == -1)
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err(EXIT_FAILURE, "%s on %s", spec, name);
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if (mntflags & MNT_GETARGS) {
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shownfsargs(&args);
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return EXIT_SUCCESS;
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}
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exit(EXIT_SUCCESS);
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}
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static void
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shownfsargs(const struct nfs_args *nfsargsp)
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{
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char fbuf[2048];
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char host[NI_MAXHOST], serv[NI_MAXSERV];
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int error;
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(void)snprintb(fbuf, sizeof(fbuf), NFSMNT_BITS,
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(uint64_t)nfsargsp->flags);
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if (nfsargsp->addr != NULL) {
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error = getnameinfo(nfsargsp->addr,
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(socklen_t)nfsargsp->addrlen, host,
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sizeof(host), serv, sizeof(serv),
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NI_NUMERICHOST | NI_NUMERICSERV);
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if (error != 0)
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warnx("getnameinfo: %s", gai_strerror(error));
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} else
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error = -1;
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if (error == 0)
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printf("addr=%s, port=%s, addrlen=%d, ",
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|
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: %s %s\n%s\n%s\n%s\n%s\n", getprogname(),
|
|
"[-23bCcdilPpqsTUuX] [-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(EXIT_FAILURE);
|
|
}
|