/*-
- * Copyright (c) 2003-2004 Tim Kientzle
- * All rights reserved.
- *
- * 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
- * in this position and unchanged.
- * 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 AUTHOR(S) ``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 AUTHOR(S) 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.
+ * This file is in the public domain.
+ * Do with it as you will.
*/
/*-
* This is a compact "tar" program whose primary goal is small size.
- * Statically linked, it can be under 64k. This serves a number
+ * Statically linked, it can be very small indeed. This serves a number
* of goals:
* o a testbed for libarchive (to check for link pollution),
* o a useful tool for space-constrained systems (boot floppies, etc),
* o a place to experiment with new implementation ideas for bsdtar,
* o a small program to demonstrate libarchive usage.
*
- * Use the following macros to control what features get incorporated:
+ * Use the following macros to suppress features:
* NO_BZIP2 - Implies NO_BZIP2_CREATE and NO_BZIP2_EXTRACT
* NO_BZIP2_CREATE - Suppress bzip2 compression support.
* NO_BZIP2_EXTRACT - Suppress bzip2 auto-detection and decompression.
+ * NO_COMPRESS - Implies NO_COMPRESS_CREATE and NO_COMPRESS_EXTRACT
+ * NO_COMPRESS_CREATE - Suppress compress(1) compression support
* NO_COMPRESS_EXTRACT - Suppress compress(1) auto-detect and decompression.
- * NO_COMPRESS - Implies NO_COMPRESS_EXTRACT
* NO_CREATE - Suppress all archive creation support.
* NO_CPIO_EXTRACT - Suppress auto-detect and dearchiving of cpio archives.
* NO_GZIP - Implies NO_GZIP_CREATE and NO_GZIP_EXTRACT
* NO_GZIP_CREATE - Suppress gzip compression support.
* NO_GZIP_EXTRACT - Suppress gzip auto-detection and decompression.
+ * NO_LOOKUP - Try to avoid getpw/getgr routines, which can be very large
* NO_TAR_EXTRACT - Suppress tar extraction
*
- * With all of the above options (except NO_TAR_EXTRACT), you get a
- * very small program that can recognize and extract essentially any
- * uncompressed tar archive. On FreeBSD 5.1, this minimal program is
- * under 64k, statically linked. Without any of the above options,
- * you get a static executable of about 180k with a lot of very
- * sophisticated modern features.
- *
- * Compare this to over 60k for: main(){printf("hello, world!");}
+ * With all of the above macros defined (except NO_TAR_EXTRACT), you
+ * get a very small program that can recognize and extract essentially
+ * any uncompressed tar archive. On FreeBSD 5.1, this minimal program
+ * is under 64k, statically linked, which compares rather favorably to
+ * main(){printf("hello, world");}
+ * which is over 60k statically linked on the same operating system.
+ * Without any of the above macros, you get a static executable of
+ * about 180k with a lot of very sophisticated modern features.
+ * Obviously, it's trivial to add support for ISO, Zip, mtree,
+ * lzma/xz, etc. Just fill in the appropriate setup calls.
*/
#include <sys/types.h>
#endif
/*
- * NO_CREATE implies NO_BZIP2_CREATE and NO_GZIP_CREATE.
+ * NO_CREATE implies NO_BZIP2_CREATE and NO_GZIP_CREATE and NO_COMPRESS_CREATE.
*/
#ifdef NO_CREATE
#undef NO_BZIP2_CREATE
#define NO_BZIP2_CREATE
-#undef NO_GZIP_CREATE
-#define NO_GZIP_CREATE
-#endif
-
-/*
- * The combination of NO_GZIP_CREATE and NO_GZIP_EXTRACT is
- * equivalent to NO_GZIP.
- */
-#ifdef NO_GZIP_CREATE
-#ifdef NO_GZIP_EXTRACT
-#undef NO_GZIP
-#define NO_GZIP
-#endif
-#endif
-
-#ifdef NO_GZIP
-#undef NO_GZIP_EXTRACT
-#define NO_GZIP_EXTRACT
+#undef NO_COMPRESS_CREATE
+#define NO_COMPRESS_CREATE
#undef NO_GZIP_CREATE
#define NO_GZIP_CREATE
#endif
#endif
/*
- * NO_COMPRESS_EXTRACT and NO_COMPRESS are equivalent.
+ * The combination of NO_COMPRESS_CREATE and NO_COMPRESS_EXTRACT is
+ * equivalent to NO_COMPRESS.
*/
+#ifdef NO_COMPRESS_CREATE
#ifdef NO_COMPRESS_EXTRACT
#undef NO_COMPRESS
#define NO_COMPRESS
#endif
+#endif
#ifdef NO_COMPRESS
#undef NO_COMPRESS_EXTRACT
#define NO_COMPRESS_EXTRACT
+#undef NO_COMPRESS_CREATE
+#define NO_COMPRESS_CREATE
+#endif
+
+/*
+ * The combination of NO_GZIP_CREATE and NO_GZIP_EXTRACT is
+ * equivalent to NO_GZIP.
+ */
+#ifdef NO_GZIP_CREATE
+#ifdef NO_GZIP_EXTRACT
+#undef NO_GZIP
+#define NO_GZIP
+#endif
#endif
+#ifdef NO_GZIP
+#undef NO_GZIP_EXTRACT
+#define NO_GZIP_EXTRACT
+#undef NO_GZIP_CREATE
+#define NO_GZIP_CREATE
+#endif
#ifndef NO_CREATE
static void create(const char *filename, int compress, const char **argv);
compress = opt;
break;
#endif
+#ifndef NO_COMPRESS_CREATE
+ case 'Z':
+ compress = opt;
+ break;
+#endif
#ifndef NO_GZIP_CREATE
case 'z':
compress = opt;
create(const char *filename, int compress, const char **argv)
{
struct archive *a;
+ struct archive *disk;
struct archive_entry *entry;
ssize_t len;
int fd;
archive_write_set_compression_bzip2(a);
break;
#endif
+#ifndef NO_COMPRESS_CREATE
+ case 'Z':
+ archive_write_set_compression_compress(a);
+ break;
+#endif
#ifndef NO_GZIP_CREATE
case 'z':
archive_write_set_compression_gzip(a);
if (strcmp(filename, "-") == 0)
filename = NULL;
archive_write_open_file(a, filename);
+
+ disk = archive_read_disk_new();
+#ifndef NO_LOOKUP
+ archive_read_disk_set_standard_lookup(disk);
+#endif
while (*argv != NULL) {
struct tree *t = tree_open(*argv);
while (tree_next(t)) {
entry = archive_entry_new();
- archive_entry_copy_stat(entry, tree_current_stat(t));
archive_entry_set_pathname(entry, tree_current_path(t));
+ archive_read_disk_entry_from_file(disk, entry, -1,
+ tree_current_stat(t));
if (verbose) {
msg("a ");
msg(tree_current_path(t));
#endif
#ifndef NO_CPIO_EXTRACT
archive_read_support_format_cpio(a);
+#endif
+#ifndef NO_LOOKUP
+ archive_write_disk_set_standard_lookup(ext);
#endif
if (filename != NULL && strcmp(filename, "-") == 0)
filename = NULL;
#ifndef NO_BZIP2
"y"
#endif
+#ifndef NO_COMPRESS
+ "Z"
+#endif
#ifndef NO_GZIP
"z"
#endif
errmsg(m);
exit(1);
}
-
-#if 0
-/*
- * These override functions in libc (which are called by libarchive).
- * The libc functions are pretty large; this bit of subterfuge
- * reduces the size of the executable by about 70%.
- */
-struct passwd *getpwnam(const char *);
-struct group *getgrnam(const char *);
-
-struct passwd *
-getpwnam(const char *login)
-{
- (void)login;
- return (NULL);
-}
-
-struct group *
-getgrnam(const char *name)
-{
- (void)name;
- return (NULL);
-}
-#endif
projects / thirdparty / libarchive.git / commitdiff
