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mount_kernfs.c revision 1.1.2.1 
      1 /*
      2  * Copyright (c) 1990, 1992 Jan-Simon Pendry
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Jan-Simon Pendry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by the University of
     19  *      California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	$Id: mount_kernfs.c,v 1.1.2.1 1993/07/20 02:34:58 cgd Exp $
     37  */
     38 
     39 #include <stdio.h>
     40 #include <string.h>
     41 #include <unistd.h>
     42 #include <sys/types.h>
     43 #include <sys/mount.h>
     44 
     45 main(c, v)
     46 int c;
     47 char *v[];
     48 {
     49 	extern char *optarg;
     50 	extern int optind;
     51 	int ch;
     52 	int usage = 0;
     53 	int mntflags;
     54 	char *dummy;
     55 	char *mountpt;
     56 	int rc;
     57 	char *pname;
     58 
     59 	pname = strrchr(v[0], '/');
     60 	if (pname == NULL)
     61 		pname = v[0];
     62 	else
     63 		pname++;
     64 
     65 	/*
     66 	 * Crack -F option
     67 	 */
     68 	while ((ch = getopt(c, v, "F:")) != EOF)
     69 	switch (ch) {
     70 	case 'F':
     71 		mntflags = atoi(optarg);
     72 		break;
     73 	default:
     74 	case '?':
     75 		usage++;
     76 		break;
     77 	}
     78 
     79 	/*
     80 	 * Need two more arguments
     81 	 */
     82 	if (optind != (c - 2))
     83 		usage++;
     84 
     85 	if (usage) {
     86 		fputs("usage: mount_kernfs [ fsoptions ] kern mount-point\n", stderr);
     87 		exit(1);
     88 	}
     89 
     90 	/*
     91 	 * Get target and mount point
     92 	 */
     93 	dummy = v[optind];
     94 	mountpt = v[optind+1];
     95 
     96 	rc = mount(MOUNT_KERNFS, mountpt, mntflags, (caddr_t) 0);
     97 	if (rc < 0) {
     98 		perror(pname);
     99 		exit(1);
    100 	}
    101 	exit(0);
    102 }
    103