432 lines
9.5 KiB
C
432 lines
9.5 KiB
C
/*-
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* Copyright (c) 1980, 1989 The Regents of the University of California.
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* All rights reserved.
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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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char copyright[] =
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"@(#) Copyright (c) 1980, 1989 The Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)umount.c 5.16 (Berkeley) 6/3/91";*/
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static char rcsid[] = "$Id: umount.c,v 1.5 1993/12/05 13:44:35 deraadt Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#ifdef NFS
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <netdb.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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#include <nfs/rpcv2.h>
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#endif
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#include <fstab.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef NFS
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int xdr_dir();
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char *nfshost;
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#endif
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int vflag, all, errs, fake;
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int fflag = MNT_NOFORCE;
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char *getmntname();
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#define MNTON 1
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#define MNTFROM 2
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#define MNTTYPE 3
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int *typelist, *maketypelist();
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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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extern char *optarg;
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extern int optind;
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int ch;
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sync();
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while ((ch = getopt(argc, argv, "afFh:t:v")) != EOF)
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switch((char)ch) {
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case 'v':
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vflag++;
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break;
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case 'f':
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fflag = MNT_FORCE;
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break;
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case 'F':
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fake++;
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break;
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case 'a':
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all++;
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break;
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case 't':
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typelist = maketypelist(optarg);
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break;
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#ifdef NFS
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case 'h':
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/* -h flag implies -a, and "-t nfs" if no -t flag */
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nfshost = optarg;
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all++;
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if (typelist == NULL)
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typelist = maketypelist("nfs");
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break;
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#endif /* NFS */
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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if (argc == 0 && !all)
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usage();
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if (all) {
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if (argc > 0)
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usage();
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if (setfsent() == 0)
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perror(FSTAB), exit(1);
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umountall(typelist);
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exit(0);
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} else
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setfsent();
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while (argc > 0) {
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if (umountfs(*argv++, 0) == 0)
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errs++;
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argc--;
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}
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exit(errs);
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}
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usage()
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{
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fprintf(stderr,
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"%s\n%s\n",
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"Usage: umount [-fv] special | node",
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#ifndef NFS
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" or umount -a[fv] [-t fstypelist]"
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#else
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" or umount -a[fv] [-h host] [-t fstypelist]"
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#endif
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);
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exit(1);
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}
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umountall(typelist)
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char **typelist;
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{
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register struct fstab *fs;
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struct fstab *allocfsent();
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if ((fs = getfsent()) == (struct fstab *)0)
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return;
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fs = allocfsent(fs);
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umountall(typelist);
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if (strcmp(fs->fs_file, "/") == 0) {
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freefsent(fs);
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return;
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}
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if (strcmp(fs->fs_type, FSTAB_RW) &&
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strcmp(fs->fs_type, FSTAB_RO) &&
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strcmp(fs->fs_type, FSTAB_RQ)) {
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freefsent(fs);
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return;
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}
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(void) umountfs(fs->fs_file, typelist);
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freefsent(fs);
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}
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struct fstab *
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allocfsent(fs)
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register struct fstab *fs;
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{
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register struct fstab *new;
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register char *cp;
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new = (struct fstab *)malloc((unsigned)sizeof (*fs));
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cp = (char *)malloc((unsigned)strlen(fs->fs_file) + 1);
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strcpy(cp, fs->fs_file);
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new->fs_file = cp;
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cp = (char *)malloc((unsigned)strlen(fs->fs_type) + 1);
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strcpy(cp, fs->fs_type);
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new->fs_type = cp;
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cp = (char *)malloc((unsigned)strlen(fs->fs_spec) + 1);
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strcpy(cp, fs->fs_spec);
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new->fs_spec = cp;
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new->fs_passno = fs->fs_passno;
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new->fs_freq = fs->fs_freq;
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return (new);
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}
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freefsent(fs)
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register struct fstab *fs;
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{
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if (fs->fs_file)
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free(fs->fs_file);
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if (fs->fs_spec)
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free(fs->fs_spec);
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if (fs->fs_type)
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free(fs->fs_type);
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free((char *)fs);
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}
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umountfs(name, typelist)
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char *name;
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int *typelist;
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{
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char *mntpt;
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struct stat stbuf;
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int type;
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#ifdef NFS
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register CLIENT *clp;
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struct hostent *hp = 0;
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struct sockaddr_in saddr;
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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;
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char *hostp, *delimp;
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#endif /* NFS */
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if (stat(name, &stbuf) < 0) {
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if (getmntname(name, MNTFROM, &type) != 0)
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mntpt = name;
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else if ((mntpt = getmntname(name, MNTON, &type)) == 0) {
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fprintf(stderr, "%s: not currently mounted\n", name);
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return (0);
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}
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} else if ((stbuf.st_mode & S_IFMT) == S_IFBLK) {
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if ((mntpt = getmntname(name, MNTON, &type)) == 0) {
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fprintf(stderr, "%s: not currently mounted\n", name);
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return (0);
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}
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} else if ((stbuf.st_mode & S_IFMT) == S_IFDIR) {
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mntpt = name;
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if (getmntname(mntpt, MNTFROM, &type) == 0) {
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fprintf(stderr, "%s: not currently mounted\n", name);
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return (0);
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}
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} else {
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fprintf(stderr, "%s: not a directory or special device\n",
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name);
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return (0);
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}
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if (badtype(type, typelist))
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return(1);
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#ifdef NFS
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if ((delimp = index(name, '@')) != NULL) {
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hostp = delimp + 1;
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*delimp = '\0';
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hp = gethostbyname(hostp);
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*delimp = '@';
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} else if ((delimp = index(name, ':')) != NULL) {
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*delimp = '\0';
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hostp = name;
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hp = gethostbyname(hostp);
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name = delimp+1;
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*delimp = ':';
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}
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if (!namematch(hp, nfshost))
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return(1);
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#endif /* NFS */
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if (!fake && unmount(mntpt, fflag) < 0) {
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perror(mntpt);
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return (0);
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}
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if (vflag)
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fprintf(stderr, "%s: Unmounted from %s\n", name, mntpt);
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#ifdef NFS
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if (!fake && hp != NULL && (fflag & MNT_FORCE) == 0) {
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*delimp = '\0';
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bzero((char *)&saddr, sizeof saddr);
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bcopy(hp->h_addr,(caddr_t)&saddr.sin_addr,hp->h_length);
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saddr.sin_family = AF_INET;
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saddr.sin_port = 0;
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pertry.tv_sec = 3;
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pertry.tv_usec = 0;
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if ((clp = clntudp_create(&saddr, RPCPROG_MNT, RPCMNT_VER1,
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pertry, &so)) == NULL) {
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clnt_pcreateerror("Cannot MNT PRC");
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return (1);
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}
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clp->cl_auth = authunix_create_default();
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try.tv_sec = 20;
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try.tv_usec = 0;
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clnt_stat = clnt_call(clp, RPCMNT_UMOUNT, xdr_dir, name,
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xdr_void, (caddr_t)0, try);
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if (clnt_stat != RPC_SUCCESS) {
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clnt_perror(clp, "Bad MNT RPC");
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return (1);
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}
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auth_destroy(clp->cl_auth);
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clnt_destroy(clp);
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}
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#endif /* NFS */
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return (1);
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}
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char *
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getmntname(name, what, type)
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char *name;
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int what;
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int *type;
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{
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int mntsize, i;
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struct statfs *mntbuf;
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if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) {
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perror("umount");
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return (0);
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}
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for (i = 0; i < mntsize; i++) {
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if (what == MNTON && !strcmp(mntbuf[i].f_mntfromname, name)) {
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if (type)
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*type = mntbuf[i].f_type;
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return (mntbuf[i].f_mntonname);
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}
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if (what == MNTFROM && !strcmp(mntbuf[i].f_mntonname, name)) {
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if (type)
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*type = mntbuf[i].f_type;
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return (mntbuf[i].f_mntfromname);
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}
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}
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return (0);
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}
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static int skipvfs;
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badtype(type, typelist)
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int type;
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int *typelist;
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{
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if (typelist == 0)
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return(0);
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while (*typelist) {
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if (type == *typelist)
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return(skipvfs);
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typelist++;
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}
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return(!skipvfs);
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}
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int *
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maketypelist(fslist)
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char *fslist;
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{
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register char *nextcp;
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register int *av, i;
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if (fslist == NULL)
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return(NULL);
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if (fslist[0] == 'n' && fslist[1] == 'o') {
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fslist += 2;
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skipvfs = 1;
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} else
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skipvfs = 0;
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for (i = 0, nextcp = fslist; *nextcp; nextcp++)
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if (*nextcp == ',')
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i++;
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av = (int *)malloc((i+2) * sizeof(int));
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if (av == NULL)
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return(NULL);
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for (i = 0; fslist; fslist = nextcp) {
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if (nextcp = index(fslist, ','))
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*nextcp++ = '\0';
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if (strcmp(fslist, "ufs") == 0)
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av[i++] = MOUNT_UFS;
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else if (strcmp(fslist, "nfs") == 0)
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av[i++] = MOUNT_NFS;
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else if (strcmp(fslist, "mfs") == 0)
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av[i++] = MOUNT_MFS;
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else if (strcmp(fslist, "msdos") == 0)
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av[i++] = MOUNT_MSDOS;
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else if (strcmp(fslist, "isofs") == 0)
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av[i++] = MOUNT_ISOFS;
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}
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av[i++] = 0;
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return(av);
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}
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#ifdef NFS
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namematch(hp, nfshost)
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struct hostent *hp;
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char *nfshost;
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{
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register char *cp;
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register char **np;
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if (hp == NULL || nfshost == NULL)
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return(1);
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if (strcasecmp(nfshost, hp->h_name) == 0)
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return(1);
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if (cp = index(hp->h_name, '.')) {
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*cp = '\0';
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if (strcasecmp(nfshost, hp->h_name) == 0)
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return(1);
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}
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for (np = hp->h_aliases; *np; np++) {
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if (strcasecmp(nfshost, *np) == 0)
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return(1);
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if (cp = index(*np, '.')) {
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*cp = '\0';
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if (strcasecmp(nfshost, *np) == 0)
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return(1);
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}
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}
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return(0);
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}
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/*
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* xdr routines for mount rpc's
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*/
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xdr_dir(xdrsp, dirp)
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XDR *xdrsp;
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char *dirp;
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{
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return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
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}
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#endif /* NFS */
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