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Annotation of src/sbin/gpt/destroy.c, Revision 1.2.2.1

1.1       christos    1: /*-
                      2:  * Copyright (c) 2002 Marcel Moolenaar
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  *
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     17:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     18:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     19:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     20:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     21:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     22:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     23:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     24:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     25:  */
                     26:
                     27: #include <sys/cdefs.h>
1.2       christos   28: #ifdef __FBSDID
1.1       christos   29: __FBSDID("$FreeBSD: src/sbin/gpt/destroy.c,v 1.6 2005/08/31 01:47:19 marcel Exp $");
1.2       christos   30: #endif
                     31: #ifdef __RCSID
1.2.2.1 ! jdc        32: __RCSID("$NetBSD: destroy.c,v 1.2 2006/10/15 22:36:29 christos Exp $");
1.2       christos   33: #endif
1.1       christos   34:
                     35: #include <sys/types.h>
                     36:
                     37: #include <err.h>
                     38: #include <stddef.h>
                     39: #include <stdio.h>
                     40: #include <stdlib.h>
                     41: #include <string.h>
                     42: #include <unistd.h>
                     43:
                     44: #include "map.h"
                     45: #include "gpt.h"
                     46:
                     47: static int recoverable;
                     48:
1.2.2.1 ! jdc        49: const char destroymsg[] = "destroy [-r] device ...";
        !            50:
1.1       christos   51: static void
                     52: usage_destroy(void)
                     53: {
                     54:
                     55:        fprintf(stderr,
1.2.2.1 ! jdc        56:            "usage: %s %s\n", getprogname(), destroymsg);
1.1       christos   57:        exit(1);
                     58: }
                     59:
                     60: static void
                     61: destroy(int fd)
                     62: {
                     63:        map_t *pri_hdr, *sec_hdr;
                     64:
                     65:        pri_hdr = map_find(MAP_TYPE_PRI_GPT_HDR);
                     66:        sec_hdr = map_find(MAP_TYPE_SEC_GPT_HDR);
                     67:
                     68:        if (pri_hdr == NULL && sec_hdr == NULL) {
                     69:                warnx("%s: error: device doesn't contain a GPT", device_name);
                     70:                return;
                     71:        }
                     72:
                     73:        if (recoverable && sec_hdr == NULL) {
                     74:                warnx("%s: error: recoverability not possible", device_name);
                     75:                return;
                     76:        }
                     77:
                     78:        if (pri_hdr != NULL) {
                     79:                bzero(pri_hdr->map_data, secsz);
                     80:                gpt_write(fd, pri_hdr);
                     81:        }
                     82:
                     83:        if (!recoverable && sec_hdr != NULL) {
                     84:                bzero(sec_hdr->map_data, secsz);
                     85:                gpt_write(fd, sec_hdr);
                     86:        }
                     87: }
                     88:
                     89: int
                     90: cmd_destroy(int argc, char *argv[])
                     91: {
                     92:        int ch, fd;
                     93:
                     94:        while ((ch = getopt(argc, argv, "r")) != -1) {
                     95:                switch(ch) {
                     96:                case 'r':
                     97:                        recoverable = 1;
                     98:                        break;
                     99:                default:
                    100:                        usage_destroy();
                    101:                }
                    102:        }
                    103:
                    104:        if (argc == optind)
                    105:                usage_destroy();
                    106:
                    107:        while (optind < argc) {
                    108:                fd = gpt_open(argv[optind++]);
                    109:                if (fd == -1) {
                    110:                        warn("unable to open device '%s'", device_name);
                    111:                        continue;
                    112:                }
                    113:
                    114:                destroy(fd);
                    115:
                    116:                gpt_close(fd);
                    117:        }
                    118:
                    119:        return (0);
                    120: }

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