1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
269 lines
6.9 KiB
C
269 lines
6.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1999 Martin Blapp
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <rpc/rpc.h>
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#include <rpcsvc/mount.h>
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#include <err.h>
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#include <netdb.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 "mounttab.h"
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int verbose;
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static int do_umount (char *, char *);
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static int do_umntall (char *);
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static int is_mounted (char *, char *);
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static void usage (void);
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int xdr_dir (XDR *, char *);
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int
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main(int argc, char **argv) {
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int ch, keep, success, pathlen;
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time_t expire, now;
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char *host, *path;
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struct mtablist *mtab;
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expire = 0;
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host = path = NULL;
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success = keep = verbose = 0;
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while ((ch = getopt(argc, argv, "h:kp:ve:")) != -1)
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switch (ch) {
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case 'h':
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host = optarg;
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break;
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case 'e':
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expire = atoi(optarg);
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break;
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case 'k':
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keep = 1;
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break;
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case 'p':
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path = optarg;
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break;
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case 'v':
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verbose = 1;
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break;
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case '?':
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usage();
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default:
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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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/* Default expiretime is one day */
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if (expire == 0)
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expire = 86400;
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time(&now);
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/* Read PATH_MOUNTTAB. */
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if (!read_mtab()) {
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if (verbose)
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warnx("no mounttab entries (%s does not exist)",
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PATH_MOUNTTAB);
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mtabhead = NULL;
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}
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if (host == NULL && path == NULL) {
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/* Check each entry and do any necessary unmount RPCs. */
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for (mtab = mtabhead; mtab != NULL; mtab = mtab->mtab_next) {
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if (*mtab->mtab_host == '\0')
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continue;
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if (mtab->mtab_time + expire < now) {
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/* Clear expired entry. */
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if (verbose)
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warnx("remove expired entry %s:%s",
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mtab->mtab_host, mtab->mtab_dirp);
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bzero(mtab->mtab_host,
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sizeof(mtab->mtab_host));
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continue;
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}
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if (keep && is_mounted(mtab->mtab_host,
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mtab->mtab_dirp)) {
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if (verbose)
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warnx("skip entry %s:%s",
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mtab->mtab_host, mtab->mtab_dirp);
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continue;
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}
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if (do_umount(mtab->mtab_host, mtab->mtab_dirp)) {
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if (verbose)
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warnx("umount RPC for %s:%s succeeded",
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mtab->mtab_host, mtab->mtab_dirp);
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/* Remove all entries for this host + path. */
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clean_mtab(mtab->mtab_host, mtab->mtab_dirp,
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verbose);
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}
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}
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success = 1;
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} else {
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if (host == NULL && path != NULL)
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/* Missing hostname. */
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usage();
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if (path == NULL) {
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/* Do a RPC UMNTALL for this specific host */
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success = do_umntall(host);
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if (verbose && success)
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warnx("umntall RPC for %s succeeded", host);
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} else {
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/* Do a RPC UMNTALL for this specific mount */
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for (pathlen = strlen(path);
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pathlen > 1 && path[pathlen - 1] == '/'; pathlen--)
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path[pathlen - 1] = '\0';
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success = do_umount(host, path);
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if (verbose && success)
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warnx("umount RPC for %s:%s succeeded", host,
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path);
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}
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/* If successful, remove any corresponding mounttab entries. */
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if (success)
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clean_mtab(host, path, verbose);
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}
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/* Write and unlink PATH_MOUNTTAB if necessary */
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if (success)
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success = write_mtab(verbose);
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free_mtab();
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exit (success ? 0 : 1);
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}
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/*
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* Send a RPC_MNT UMNTALL request to hostname.
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* XXX This works for all mountd implementations,
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* but produces a RPC IOERR on non FreeBSD systems.
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*/
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int
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do_umntall(char *hostname) {
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enum clnt_stat clnt_stat;
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struct timeval try;
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CLIENT *clp;
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try.tv_sec = 3;
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try.tv_usec = 0;
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clp = clnt_create_timed(hostname, MOUNTPROG, MOUNTVERS, "udp",
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&try);
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if (clp == NULL) {
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warnx("%s: %s", hostname, clnt_spcreateerror("MOUNTPROG"));
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return (0);
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}
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clp->cl_auth = authunix_create_default();
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clnt_stat = clnt_call(clp, MOUNTPROC_UMNTALL,
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(xdrproc_t)xdr_void, (caddr_t)0,
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(xdrproc_t)xdr_void, (caddr_t)0, try);
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if (clnt_stat != RPC_SUCCESS)
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warnx("%s: %s", hostname, clnt_sperror(clp, "MOUNTPROC_UMNTALL"));
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auth_destroy(clp->cl_auth);
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clnt_destroy(clp);
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return (clnt_stat == RPC_SUCCESS);
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}
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/*
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* Send a RPC_MNT UMOUNT request for dirp to hostname.
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*/
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int
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do_umount(char *hostname, char *dirp) {
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enum clnt_stat clnt_stat;
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struct timeval try;
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CLIENT *clp;
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try.tv_sec = 3;
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try.tv_usec = 0;
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clp = clnt_create_timed(hostname, MOUNTPROG, MOUNTVERS, "udp",
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&try);
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if (clp == NULL) {
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warnx("%s: %s", hostname, clnt_spcreateerror("MOUNTPROG"));
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return (0);
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}
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clp->cl_auth = authsys_create_default();
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clnt_stat = clnt_call(clp, MOUNTPROC_UMNT, (xdrproc_t)xdr_dir, dirp,
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(xdrproc_t)xdr_void, (caddr_t)0, try);
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if (clnt_stat != RPC_SUCCESS)
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warnx("%s: %s", hostname, clnt_sperror(clp, "MOUNTPROC_UMNT"));
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auth_destroy(clp->cl_auth);
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clnt_destroy(clp);
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return (clnt_stat == RPC_SUCCESS);
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}
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/*
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* Check if the entry is still/already mounted.
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*/
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int
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is_mounted(char *hostname, char *dirp) {
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struct statfs *mntbuf;
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char name[MNAMELEN + 1];
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size_t bufsize;
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int mntsize, i;
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if (strlen(hostname) + strlen(dirp) >= MNAMELEN)
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return (0);
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snprintf(name, sizeof(name), "%s:%s", hostname, dirp);
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mntsize = getfsstat(NULL, 0, MNT_NOWAIT);
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if (mntsize <= 0)
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return (0);
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bufsize = (mntsize + 1) * sizeof(struct statfs);
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if ((mntbuf = malloc(bufsize)) == NULL)
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err(1, "malloc");
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mntsize = getfsstat(mntbuf, (long)bufsize, MNT_NOWAIT);
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for (i = mntsize - 1; i >= 0; i--) {
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if (strcmp(mntbuf[i].f_mntfromname, name) == 0) {
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free(mntbuf);
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return (1);
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}
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}
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free(mntbuf);
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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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int
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xdr_dir(XDR *xdrsp, char *dirp) {
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return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
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}
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static void
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usage() {
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(void)fprintf(stderr, "%s\n",
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"usage: rpc.umntall [-kv] [-e expire] [-h host] [-p path]");
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exit(1);
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}
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