159 lines
4.0 KiB
C
159 lines
4.0 KiB
C
/*
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* Copyright (c) 2007 Alistair Crooks. 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. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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) 2007\
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The NetBSD Foundation, Inc. All rights reserved.");
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__RCSID("$NetBSD: fusermount.c,v 1.3 2008/07/21 13:36:58 lukem Exp $");
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#endif
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <err.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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#ifndef FUSERMOUNT_VERSION
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#define FUSERMOUNT_VERSION "2.6.0"
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#endif
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enum {
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FlagCheckPerm = 1,
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FlagKernelCache,
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FlagNonrootUsers,
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ActionMount,
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ActionUnmount
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};
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/* unmount mount point(s) */
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static int
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refuse_unmount(int argc, char **argv)
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{
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int ret;
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int i;
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for (ret = 1, i = 0 ; i < argc ; i++) {
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if (unmount(argv[i], 0) < 0) {
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warn("can't unmount `%s'", argv[i]);
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ret = 0;
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}
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}
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return ret;
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}
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/* print the usage meessage */
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static void
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usage(const char *prog)
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{
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(void) fprintf(stderr,
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"Usage: %s [-c] [-d name] [-h] [-p] [-u] [-x] mountpoint...\n",
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prog);
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(void) fprintf(stderr, "\t-c\tuse kernel cache\n");
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(void) fprintf(stderr, "\t-d name\tuse name in mount information\n");
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(void) fprintf(stderr, "\t-h\tprint help information\n");
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(void) fprintf(stderr, "\t-p\tcheck file permissions\n");
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(void) fprintf(stderr, "\t-u\tunmount mount point(s)\n");
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(void) fprintf(stderr,
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"\t-x\tallow access to mortal (non-root) users\n");
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}
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int
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main(int argc, char **argv)
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{
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char *progname;
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char *execme;
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int flags;
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int action;
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int i;
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progname = NULL;
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flags = 0;
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action = ActionMount;
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while ((i = getopt(argc, argv, "Vcd:hpux")) != -1) {
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switch(i) {
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case 'V':
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printf("fusermount version: %s\n", FUSERMOUNT_VERSION);
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exit(EXIT_SUCCESS);
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/* NOTREACHED */
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case 'c':
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flags |= FlagKernelCache;
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break;
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case 'd':
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progname = optarg;
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break;
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case 'h':
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usage(*argv);
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exit(EXIT_SUCCESS);
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case 'p':
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flags |= FlagCheckPerm;
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break;
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case 'u':
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action = ActionUnmount;
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break;
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case 'x':
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if (geteuid() != 0) {
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err(EXIT_FAILURE,
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"-x option is only allowed for use by root");
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}
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flags |= FlagNonrootUsers;
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break;
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default:
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warnx("Unrecognised argument `%c'", i);
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usage(*argv);
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exit(EXIT_FAILURE);
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}
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}
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if (optind >= argc - 2) {
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warnx("Not enough command line arguments");
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usage(*argv);
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exit(EXIT_FAILURE);
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}
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execme = argv[optind + 1];
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if (progname) {
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argv[optind + 1] = progname;
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}
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/* mountpoint = argv[optind]; */
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switch(action) {
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case ActionMount:
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execvp(execme, &argv[optind + 1]);
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break;
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case ActionUnmount:
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if (!refuse_unmount(argc - optind, argv + optind)) {
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exit(EXIT_FAILURE);
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}
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break;
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}
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exit(EXIT_SUCCESS);
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}
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