552 lines
13 KiB
C
552 lines
13 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1992, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)mount_nfs.c 8.3 (Berkeley) 3/27/94";
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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/socketvar.h>
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#include <sys/stat.h>
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#include <sys/syslog.h>
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#include <rpc/rpc.h>
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#include <rpc/pmap_clnt.h>
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#include <rpc/pmap_prot.h>
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#ifdef ISO
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#include <netiso/iso.h>
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#endif
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#ifdef KERBEROS
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#include <kerberosIV/des.h>
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#include <kerberosIV/krb.h>
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#endif
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#include <nfs/rpcv2.h>
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#include <nfs/nfsv2.h>
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#define KERNEL
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#include <nfs/nfs.h>
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#undef KERNEL
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#include <nfs/nqnfs.h>
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#include <arpa/inet.h>
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#include <ctype.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 <strings.h>
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#include <unistd.h>
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#include "mntopts.h"
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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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{ NULL }
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};
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struct nfs_args nfsdefargs = {
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(struct sockaddr *)0,
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sizeof (struct sockaddr_in),
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SOCK_DGRAM,
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0,
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(nfsv2fh_t *)0,
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0,
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NFS_WSIZE,
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NFS_RSIZE,
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NFS_TIMEO,
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NFS_RETRANS,
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NFS_MAXGRPS,
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NFS_DEFRAHEAD,
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NQ_DEFLEASE,
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NQ_DEADTHRESH,
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(char *)0,
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};
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struct nfhret {
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u_long stat;
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nfsv2fh_t nfh;
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};
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#define DEF_RETRY 10000
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#define BGRND 1
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#define ISBGRND 2
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int retrycnt = DEF_RETRY;
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int opflags = 0;
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#ifdef KERBEROS
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char inst[INST_SZ];
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char realm[REALM_SZ];
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KTEXT_ST kt;
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#endif
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int getnfsargs __P((char *, struct nfs_args *));
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#ifdef ISO
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struct iso_addr *iso_addr __P((const char *));
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#endif
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void set_rpc_maxgrouplist __P((int));
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__dead void usage __P((void));
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int xdr_dir __P((XDR *, char *));
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int xdr_fh __P((XDR *, struct nfhret *));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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register int c;
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register struct nfs_args *nfsargsp;
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struct nfs_args nfsargs;
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struct nfsd_cargs ncd;
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int mntflags, i, nfssvc_flag, num;
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char *name, *p, *spec;
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int error = 0;
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#ifdef KERBEROS
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uid_t last_ruid;
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#endif
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#ifdef KERBEROS
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last_ruid = -1;
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(void)strcpy(realm, KRB_REALM);
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#endif
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retrycnt = DEF_RETRY;
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mntflags = 0;
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nfsargs = nfsdefargs;
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nfsargsp = &nfsargs;
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while ((c = getopt(argc, argv,
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"a:bcdD:g:iKklL:Mm:o:PpqR:r:sTt:w:x:")) != EOF)
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switch (c) {
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case 'a':
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num = strtol(optarg, &p, 10);
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if (*p || num < 0)
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errx(1, "illegal -a value -- %s", optarg);
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nfsargsp->readahead = num;
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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 'D':
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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -D value -- %s", optarg);
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nfsargsp->deadthresh = num;
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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 = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -g value -- %s", optarg);
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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->flags |= NFSMNT_INT;
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break;
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#ifdef KERBEROS
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case 'K':
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nfsargsp->flags |= NFSMNT_KERB;
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break;
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#endif
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case 'k':
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nfsargsp->flags |= NFSMNT_NQLOOKLEASE;
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break;
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case 'L':
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num = strtol(optarg, &p, 10);
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if (*p || num < 2)
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errx(1, "illegal -L value -- %s", optarg);
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nfsargsp->leaseterm = num;
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nfsargsp->flags |= NFSMNT_LEASETERM;
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break;
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case 'l':
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nfsargsp->flags |= NFSMNT_RDIRALOOK;
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break;
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case 'M':
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nfsargsp->flags |= NFSMNT_MYWRITE;
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break;
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#ifdef KERBEROS
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case 'm':
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(void)strncpy(realm, optarg, REALM_SZ - 1);
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realm[REALM_SZ - 1] = '\0';
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break;
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#endif
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case 'o':
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getmntopts(optarg, mopts, &mntflags);
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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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#ifdef ISO
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case 'p':
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nfsargsp->sotype = SOCK_SEQPACKET;
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break;
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#endif
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case 'q':
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nfsargsp->flags |= NFSMNT_NQNFS;
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break;
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case 'R':
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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -R value -- %s", optarg);
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retrycnt = num;
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break;
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case 'r':
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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -r value -- %s", optarg);
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nfsargsp->rsize = num;
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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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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -t value -- %s", optarg);
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nfsargsp->timeo = num;
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nfsargsp->flags |= NFSMNT_TIMEO;
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break;
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case 'w':
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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -w value -- %s", optarg);
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nfsargsp->wsize = num;
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nfsargsp->flags |= NFSMNT_WSIZE;
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break;
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case 'x':
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num = strtol(optarg, &p, 10);
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if (*p || num <= 0)
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errx(1, "illegal -x value -- %s", optarg);
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nfsargsp->retrans = num;
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nfsargsp->flags |= NFSMNT_RETRANS;
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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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error = 1;
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spec = *argv++;
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name = *argv;
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if (!getnfsargs(spec, nfsargsp))
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exit(1);
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if (mount(MOUNT_NFS, name, mntflags, nfsargsp))
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err(1, "%s", name);
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if (nfsargsp->flags & (NFSMNT_NQNFS | NFSMNT_KERB)) {
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if ((opflags & ISBGRND) == 0) {
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if (i = fork()) {
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if (i == -1)
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err(1, "nqnfs 1");
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exit(0);
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}
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(void) setsid();
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(void) close(STDIN_FILENO);
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(void) close(STDOUT_FILENO);
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(void) close(STDERR_FILENO);
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(void) chdir("/");
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}
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openlog("mount_nfs:", LOG_PID, LOG_DAEMON);
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nfssvc_flag = NFSSVC_MNTD;
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ncd.ncd_dirp = name;
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while (nfssvc(nfssvc_flag, (caddr_t)&ncd) < 0) {
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if (errno != ENEEDAUTH) {
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syslog(LOG_ERR, "nfssvc err %m");
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continue;
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}
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nfssvc_flag =
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NFSSVC_MNTD | NFSSVC_GOTAUTH | NFSSVC_AUTHINFAIL;
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#ifdef KERBEROS
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/*
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* Set up as ncd_authuid for the kerberos call.
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* Must set ruid to ncd_authuid and reset the
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* ticket name iff ncd_authuid is not the same
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* as last time, so that the right ticket file
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* is found.
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*/
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if (ncd.ncd_authuid != last_ruid) {
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krb_set_tkt_string("");
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last_ruid = ncd.ncd_authuid;
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}
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setreuid(ncd.ncd_authuid, 0);
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if (krb_mk_req(&kt, "rcmd", inst, realm, 0) ==
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KSUCCESS &&
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kt.length <= (RPCAUTH_MAXSIZ - 2 * NFSX_UNSIGNED)) {
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ncd.ncd_authtype = RPCAUTH_NQNFS;
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ncd.ncd_authlen = kt.length;
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ncd.ncd_authstr = (char *)kt.dat;
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nfssvc_flag = NFSSVC_MNTD | NFSSVC_GOTAUTH;
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}
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setreuid(0, 0);
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#endif /* KERBEROS */
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}
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}
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exit(0);
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}
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int
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getnfsargs(spec, nfsargsp)
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char *spec;
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struct nfs_args *nfsargsp;
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{
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register CLIENT *clp;
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struct hostent *hp;
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static struct sockaddr_in saddr;
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#ifdef ISO
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static struct sockaddr_iso isoaddr;
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struct iso_addr *isop;
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int isoflag = 0;
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#endif
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struct timeval pertry, try;
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enum clnt_stat clnt_stat;
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int so = RPC_ANYSOCK, i;
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char *hostp, *delimp;
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#ifdef KERBEROS
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char *cp;
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#endif
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u_short tport;
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static struct nfhret nfhret;
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static char nam[MNAMELEN + 1];
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strncpy(nam, spec, MNAMELEN);
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nam[MNAMELEN] = '\0';
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if ((delimp = strchr(spec, '@')) != NULL) {
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hostp = delimp + 1;
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} else if ((delimp = strchr(spec, ':')) != NULL) {
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hostp = spec;
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spec = delimp + 1;
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} else {
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warnx("no <host>:<dirpath> or <dirpath>@<host> spec");
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return (0);
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}
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*delimp = '\0';
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/*
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* DUMB!! Until the mount protocol works on iso transport, we must
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* supply both an iso and an inet address for the host.
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*/
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#ifdef ISO
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if (!strncmp(hostp, "iso=", 4)) {
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u_short isoport;
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hostp += 4;
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isoflag++;
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if ((delimp = strchr(hostp, '+')) == NULL) {
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warnx("no iso+inet address");
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return (0);
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}
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*delimp = '\0';
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if ((isop = iso_addr(hostp)) == NULL) {
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warnx("bad ISO address");
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return (0);
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}
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bzero((caddr_t)&isoaddr, sizeof (isoaddr));
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bcopy((caddr_t)isop, (caddr_t)&isoaddr.siso_addr,
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sizeof (struct iso_addr));
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isoaddr.siso_len = sizeof (isoaddr);
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isoaddr.siso_family = AF_ISO;
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isoaddr.siso_tlen = 2;
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isoport = htons(NFS_PORT);
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bcopy((caddr_t)&isoport, TSEL(&isoaddr), isoaddr.siso_tlen);
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hostp = delimp + 1;
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}
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#endif /* ISO */
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/*
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* Handle an internet host address and reverse resolve it if
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* doing Kerberos.
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*/
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if (isdigit(*hostp)) {
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if ((saddr.sin_addr.s_addr = inet_addr(hostp)) == -1) {
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warnx("bad net address %s", hostp);
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return (0);
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}
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if ((nfsargsp->flags & NFSMNT_KERB) &&
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(hp = gethostbyaddr((char *)&saddr.sin_addr.s_addr,
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sizeof (u_long), AF_INET)) == (struct hostent *)0) {
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warnx("can't reverse resolve net address");
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return (0);
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}
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} else if ((hp = gethostbyname(hostp)) == NULL) {
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warnx("can't get net id for host");
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return (0);
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}
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#ifdef KERBEROS
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if (nfsargsp->flags & NFSMNT_KERB) {
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strncpy(inst, hp->h_name, INST_SZ);
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inst[INST_SZ - 1] = '\0';
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if (cp = strchr(inst, '.'))
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*cp = '\0';
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}
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#endif /* KERBEROS */
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bcopy(hp->h_addr, (caddr_t)&saddr.sin_addr, hp->h_length);
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nfhret.stat = EACCES; /* Mark not yet successful */
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while (retrycnt > 0) {
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saddr.sin_family = AF_INET;
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saddr.sin_port = htons(PMAPPORT);
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if ((tport = pmap_getport(&saddr, RPCPROG_NFS,
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NFS_VER2, IPPROTO_UDP)) == 0) {
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if ((opflags & ISBGRND) == 0)
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clnt_pcreateerror("NFS Portmap");
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} else {
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saddr.sin_port = 0;
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pertry.tv_sec = 10;
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pertry.tv_usec = 0;
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if ((clp = clntudp_create(&saddr, RPCPROG_MNT,
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RPCMNT_VER1, pertry, &so)) == NULL) {
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if ((opflags & ISBGRND) == 0)
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clnt_pcreateerror("Cannot MNT PRC");
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} else {
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clp->cl_auth = authunix_create_default();
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try.tv_sec = 10;
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try.tv_usec = 0;
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clnt_stat = clnt_call(clp, RPCMNT_MOUNT,
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xdr_dir, spec, xdr_fh, &nfhret, try);
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if (clnt_stat != RPC_SUCCESS) {
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if ((opflags & ISBGRND) == 0)
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warnx("%s", clnt_sperror(clp,
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"bad MNT RPC"));
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} else {
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auth_destroy(clp->cl_auth);
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clnt_destroy(clp);
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retrycnt = 0;
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}
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}
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}
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if (--retrycnt > 0) {
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if (opflags & BGRND) {
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opflags &= ~BGRND;
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if (i = fork()) {
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if (i == -1)
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err(1, "nqnfs 2");
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exit(0);
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}
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(void) setsid();
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(void) close(STDIN_FILENO);
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(void) close(STDOUT_FILENO);
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(void) close(STDERR_FILENO);
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(void) chdir("/");
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opflags |= ISBGRND;
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}
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sleep(60);
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}
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}
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if (nfhret.stat) {
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if (opflags & ISBGRND)
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exit(1);
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warn("can't access %s", spec);
|
|
return (0);
|
|
}
|
|
saddr.sin_port = htons(tport);
|
|
#ifdef ISO
|
|
if (isoflag) {
|
|
nfsargsp->addr = (struct sockaddr *) &isoaddr;
|
|
nfsargsp->addrlen = sizeof (isoaddr);
|
|
} else
|
|
#endif /* ISO */
|
|
{
|
|
nfsargsp->addr = (struct sockaddr *) &saddr;
|
|
nfsargsp->addrlen = sizeof (saddr);
|
|
}
|
|
nfsargsp->fh = &nfhret.nfh;
|
|
nfsargsp->hostname = nam;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* xdr routines for mount rpc's
|
|
*/
|
|
int
|
|
xdr_dir(xdrsp, dirp)
|
|
XDR *xdrsp;
|
|
char *dirp;
|
|
{
|
|
return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
|
|
}
|
|
|
|
int
|
|
xdr_fh(xdrsp, np)
|
|
XDR *xdrsp;
|
|
struct nfhret *np;
|
|
{
|
|
if (!xdr_u_long(xdrsp, &(np->stat)))
|
|
return (0);
|
|
if (np->stat)
|
|
return (1);
|
|
return (xdr_opaque(xdrsp, (caddr_t)&(np->nfh), NFSX_FH));
|
|
}
|
|
|
|
__dead void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: mount_nfs %s\n%s\n%s\n%s\n",
|
|
"[-bcdiKklMPqsT] [-a maxreadahead] [-D deadthresh]",
|
|
"\t[-g maxgroups] [-L leaseterm] [-m realm] [-o options] [-R retrycnt]",
|
|
"\t[-r readsize] [-t timeout] [-w writesize] [-x retrans]",
|
|
"\trhost:path node");
|
|
exit(1);
|
|
}
|