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Makefile
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Makefile.depend
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mount_nullfs.8
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mount_nullfs.c
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Editing: mount_nullfs.c
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1992, 1993, 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software donated to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1992, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)mount_null.c 8.6 (Berkeley) 4/26/95"; #endif static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include <sys/param.h> #include <sys/mount.h> #include <sys/uio.h> #include <err.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sysexits.h> #include <unistd.h> #include "mntopts.h" static void usage(void) __dead2; int main(int argc, char *argv[]) { struct iovec *iov; char *p, *val; char source[MAXPATHLEN]; char target[MAXPATHLEN]; char errmsg[255]; int ch, iovlen; char nullfs[] = "nullfs"; iov = NULL; iovlen = 0; errmsg[0] = '\0'; while ((ch = getopt(argc, argv, "o:")) != -1) switch(ch) { case 'o': val = strdup(""); p = strchr(optarg, '='); if (p != NULL) { free(val); *p = '\0'; val = p + 1; } build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 2) usage(); /* resolve target and source with realpath(3) */ if (checkpath(argv[0], target) != 0) err(EX_USAGE, "%s", target); if (checkpath(argv[1], source) != 0) err(EX_USAGE, "%s", source); build_iovec(&iov, &iovlen, "fstype", nullfs, (size_t)-1); build_iovec(&iov, &iovlen, "fspath", source, (size_t)-1); build_iovec(&iov, &iovlen, "target", target, (size_t)-1); build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); if (nmount(iov, iovlen, 0) < 0) { if (errmsg[0] != 0) err(1, "%s: %s", source, errmsg); else err(1, "%s", source); } exit(0); } static void usage(void) { (void)fprintf(stderr, "usage: mount_nullfs [-o options] target mount-point\n"); exit(1); }
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