diff options
Diffstat (limited to 'archivers/pax/files/dumptar.c')
| -rw-r--r-- | archivers/pax/files/dumptar.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/archivers/pax/files/dumptar.c b/archivers/pax/files/dumptar.c new file mode 100644 index 00000000000..77e8500c0b1 --- /dev/null +++ b/archivers/pax/files/dumptar.c @@ -0,0 +1,143 @@ +/* $NetBSD: dumptar.c,v 1.1 2004/08/21 03:28:56 jlam Exp $ */ + +/*- + * Copyright (c) 2004 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif +#include <nbcompat.h> +#if HAVE_STDIO_H +#include <stdio.h> +#endif +#if HAVE_ERR_H +#include <err.h> +#endif +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif +#if HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif +#if HAVE_SYS_MMAN_H +#include <sys/mman.h> +#endif + +#include "tar.h" + +#define ussum(a) 1 + +static char * +buf(const char *p, size_t s) +{ + static char buf[1024]; + (void)snprintf(buf, sizeof(buf), "%s", p); + buf[s] = '\0'; + return buf; +} + +int +intarg(const char *p, size_t s) +{ + char *ep, *b = buf(p, s); + int r = (int)strtol(p, &ep, 8); + return r; +} + +static int +usdump(void *p) +{ + HD_USTAR *t = p; + int size = intarg(t->size, sizeof(t->size)); + size = ((size + 511) / 512) * 512 + 512; + + (void)fprintf(stdout, "*****\n"); +#define PR(a) \ + (void)fprintf(stdout, #a "=%s\n", buf(t->a, sizeof(t->a))); +#define IPR(a) \ + (void)fprintf(stdout, #a "=%d\n", intarg(t->a, sizeof(t->a))); +#define OPR(a) \ + (void)fprintf(stdout, #a "=%o\n", intarg(t->a, sizeof(t->a))); + PR(name); + OPR(mode); + IPR(uid); + IPR(gid); + IPR(size); + OPR(mtime); + OPR(chksum); + (void)fprintf(stdout, "typeflag=%c\n", t->typeflag); + PR(linkname); + PR(magic); + PR(version); + PR(uname); + PR(gname); + OPR(devmajor); + OPR(devminor); + PR(prefix); + return size; +} + +int +main(int argc, char *argv[]) +{ + int fd; + struct stat st; + char *p, *ep; + + if (argc != 2) { + (void)fprintf(stderr, "Usage: %s <filename>\n", getprogname()); + return 1; + } + + if ((fd = open(argv[1], O_RDONLY)) == -1) + err(1, "Cannot open `%s'", argv[1]); + + if (fstat(fd, &st) == -1) + err(1, "Cannot fstat `%s'", argv[1]); + + if ((p = mmap(NULL, (size_t)st.st_size, PROT_READ, + MAP_FILE|MAP_PRIVATE, fd, (off_t)0)) == MAP_FAILED) + err(1, "Cannot mmap `%s'", argv[1]); + (void)close(fd); + + ep = (char *)p + (size_t)st.st_size; + + for (; p < ep + sizeof(HD_USTAR);) { + if (ussum(p)) + p += usdump(p); + } + return 0; +} |