1 files changed, 131 insertions, 0 deletions
diff --git a/bin/pax/dumptar.c b/bin/pax/dumptar.c
new file mode 100644
index 0000000..5538702
--- /dev/null
+++ b/bin/pax/dumptar.c
@@ -0,0 +1,131 @@
+/*	$NetBSD: dumptar.c,v 1.3 2016/05/30 17:34:35 dholland 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.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <err.h>
+#include <assert.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include "tar.h"
+
+#define ussum(a) 1
+
+/*
+ * Ensure null termination.
+ */
+static char *
+buf(const char *p, size_t s)
+{
+	static char buf[1024];
+
+	assert(s < sizeof(buf));
+	memcpy(buf, p, s);
+	buf[s] = '\0';
+	return buf;
+}
+
+static int
+intarg(const char *p, size_t s)
+{
+	char *ep, *b = buf(p, s);
+	int r = (int)strtol(b, &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;
+}