704e075311
systems just checked != 0, breaking MNT_GETARGS. Others worked with < 0, but make them check against -1 too for consistency. And sprinkle some stylish line wrapping where appropriate.
170 lines
5.6 KiB
C
170 lines
5.6 KiB
C
/* $NetBSD: mount_procfs.c,v 1.21 2007/07/16 17:06:54 pooka Exp $ */
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/*
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1990, 1992, 1993 Jan-Simon Pendry
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) 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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#if 0
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static char sccsid[] = "@(#)mount_procfs.c 8.4 (Berkeley) 4/26/95";
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#else
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__RCSID("$NetBSD: mount_procfs.c,v 1.21 2007/07/16 17:06:54 pooka Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <err.h>
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#include <unistd.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 <util.h>
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#include <miscfs/procfs/procfs.h>
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#include <mntopts.h>
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static const struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_GETARGS,
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{ "linux", 0, PROCFSMNT_LINUXCOMPAT, 1},
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MOPT_NULL,
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};
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int mount_procfs(int argc, char **argv);
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static void usage(void);
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#ifndef MOUNT_NOMAIN
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int
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main(int argc, char **argv)
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{
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return mount_procfs(argc, argv);
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}
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#endif
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int
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mount_procfs(int argc, char *argv[])
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{
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int ch, mntflags, altflags;
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struct procfs_args args;
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char canon_dir[MAXPATHLEN];
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mntoptparse_t mp;
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mntflags = altflags = 0;
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while ((ch = getopt(argc, argv, "o:")) != -1)
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switch (ch) {
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case 'o':
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mp = getmntopts(optarg, mopts, &mntflags, &altflags);
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if (mp == NULL)
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err(1, "getmntopts");
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freemntopts(mp);
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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usage();
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if (realpath(argv[1], canon_dir) == NULL) /* Check mounton path */
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err(1, "realpath %s", argv[1]);
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if (strncmp(argv[1], canon_dir, MAXPATHLEN)) {
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warnx("\"%s\" is a relative path.", argv[1]);
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warnx("using \"%s\" instead.", canon_dir);
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}
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args.version = PROCFS_ARGSVERSION;
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args.flags = altflags;
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if (mount(MOUNT_PROCFS, canon_dir, mntflags, &args, sizeof args) == -1)
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err(1, "procfs on %s", canon_dir);
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if (mntflags & MNT_GETARGS) {
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char buf[1024];
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(void)snprintb(buf, sizeof(buf), PROCFSMNT_BITS, args.flags);
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printf("version=%d, flags=%s\n", args.version, buf);
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}
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exit(0);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: mount_procfs [-o options] /proc mount_point\n");
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exit(1);
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}
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