1135642Scognet/*	$NetBSD: dumptar.c,v 1.1 2004/06/16 14:28:21 christos Exp $	*/
2135642Scognet
3139735Simp/*-
4135642Scognet * Copyright (c) 2004 The NetBSD Foundation, Inc.
5135642Scognet * All rights reserved.
6135642Scognet *
7135642Scognet * This code is derived from software contributed to The NetBSD Foundation
8135642Scognet * by Christos Zoulas.
9135642Scognet *
10135642Scognet * Redistribution and use in source and binary forms, with or without
11135642Scognet * modification, are permitted provided that the following conditions
12135642Scognet * are met:
13135642Scognet * 1. Redistributions of source code must retain the above copyright
14135642Scognet *    notice, this list of conditions and the following disclaimer.
15135642Scognet * 2. Redistributions in binary form must reproduce the above copyright
16135642Scognet *    notice, this list of conditions and the following disclaimer in the
17135642Scognet *    documentation and/or other materials provided with the distribution.
18135642Scognet *
19135642Scognet * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20135642Scognet * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21135642Scognet * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22135642Scognet * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23135642Scognet * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24135642Scognet * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25135642Scognet * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26135642Scognet * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27135642Scognet * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28135642Scognet * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29135642Scognet * POSSIBILITY OF SUCH DAMAGE.
30135642Scognet */
31135642Scognet
32135642Scognet#include <stdio.h>
33135642Scognet#include <err.h>
34135642Scognet#include <fcntl.h>
35135642Scognet#include <sys/stat.h>
36135642Scognet#include <sys/mman.h>
37135642Scognet
38135642Scognet#include "tar.h"
39135642Scognet
40175982Sraj#define ussum(a) 1
41175982Sraj
42175982Srajstatic char *
43175982Srajbuf(const char *p, size_t s)
44175982Sraj{
45226443Scognet	static char buf[1024];
46188540Scognet	(void)snprintf(buf, sizeof(buf), "%s", p);
47188540Scognet	buf[s] = '\0';
48266311Sian	return buf;
49226443Scognet}
50249582Sgabor
51226443Scognetint
52175982Srajintarg(const char *p, size_t s)
53239268Sgonzo{
54239268Sgonzo	char *ep, *b = buf(p, s);
55239268Sgonzo	int r = (int)strtol(p, &ep, 8);
56239268Sgonzo	return r;
57239268Sgonzo}
58239268Sgonzo
59239268Sgonzostatic int
60239268Sgonzousdump(void *p)
61175982Sraj{
62175982Sraj	HD_USTAR *t = p;
63175982Sraj	int size = intarg(t->size, sizeof(t->size));
64239268Sgonzo	size = ((size + 511) / 512) * 512 + 512;
65175982Sraj
66175982Sraj	(void)fprintf(stdout, "*****\n");
67234337Sandrew#define PR(a) \
68175982Sraj	(void)fprintf(stdout, #a "=%s\n", buf(t->a, sizeof(t->a)));
69135642Scognet#define IPR(a) \
70135642Scognet	(void)fprintf(stdout, #a "=%d\n", intarg(t->a, sizeof(t->a)));
71135642Scognet#define OPR(a) \
72135642Scognet	(void)fprintf(stdout, #a "=%o\n", intarg(t->a, sizeof(t->a)));
73135642Scognet	PR(name);
74135642Scognet	OPR(mode);
75135642Scognet	IPR(uid);
76135642Scognet	IPR(gid);
77135642Scognet	IPR(size);
78135642Scognet	OPR(mtime);
79135642Scognet	OPR(chksum);
80135642Scognet	(void)fprintf(stdout, "typeflag=%c\n", t->typeflag);
81135642Scognet	PR(linkname);
82142519Scognet	PR(magic);
83142519Scognet	PR(version);
84135642Scognet	PR(uname);
85135642Scognet	PR(gname);
86135642Scognet	OPR(devmajor);
87135642Scognet	OPR(devminor);
88135642Scognet	PR(prefix);
89135642Scognet	return size;
90135642Scognet}
91135642Scognet
92135642Scognetint
93135642Scognetmain(int argc, char *argv[])
94142519Scognet{
95135642Scognet	int fd;
96135642Scognet	struct stat st;
97135642Scognet	char *p, *ep;
98234337Sandrew
99175982Sraj	if (argc != 2) {
100175982Sraj		(void)fprintf(stderr, "Usage: %s <filename>\n", getprogname());
101135642Scognet		return 1;
102	}
103
104	if ((fd = open(argv[1], O_RDONLY)) == -1)
105		err(1, "Cannot open `%s'", argv[1]);
106
107	if (fstat(fd, &st) == -1)
108		err(1, "Cannot fstat `%s'", argv[1]);
109
110	if ((p = mmap(NULL, (size_t)st.st_size, PROT_READ,
111	    MAP_FILE|MAP_PRIVATE, fd, (off_t)0)) == MAP_FAILED)
112		err(1, "Cannot mmap `%s'", argv[1]);
113	(void)close(fd);
114
115	ep = (char *)p + (size_t)st.st_size;
116
117	for (; p < ep + sizeof(HD_USTAR);) {
118		if (ussum(p))
119			p += usdump(p);
120	}
121	return 0;
122}
123