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tar -Z, uncompress support

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This commit is contained in:
Glenn L McGrath 2003-11-18 21:37:52 +00:00
parent 20872be9a4
commit 56f16b42c9
5 changed files with 37 additions and 11 deletions
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8
archival/Config.in
View File

@ -193,6 +193,14 @@ config CONFIG_FEATURE_TAR_GZIP
If you enable this option tar will be able to call gzip,
when creating or extracting tar gziped archives.
config CONFIG_FEATURE_TAR_COMPRESS
bool " Enable -Z option"
default n
depends on CONFIG_TAR
help
If you enable this option tar will be able to call uncompress,
when extracting .tar.Z archives.
config CONFIG_FEATURE_TAR_OLDGNU_COMPATABILITY
bool " Enable support for old tar header format"
default N

1
archival/libunarchive/Makefile.in
View File

@ -73,6 +73,7 @@ LIBUNARCHIVE-$(CONFIG_RPM) += $(GUNZIP_FILES) get_header_cpio.o
LIBUNARCHIVE-$(CONFIG_TAR) += get_header_tar.o
LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_BZIP2) += decompress_bunzip2.o get_header_tar_bz2.o
LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_GZIP) += $(GUNZIP_FILES) get_header_tar_gz.o
LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_COMPRESS) += uncompress.o
LIBUNARCHIVE-$(CONFIG_UNCOMPRESS) += uncompress.o
LIBUNARCHIVE-$(CONFIG_UNZIP) += $(GUNZIP_FILES)

5
archival/libunarchive/decompress_uncompress.c
View File

@ -1,8 +1,6 @@
#include "config.h"
#include "libbb.h"
#if defined CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
/* uncompress for busybox -- (c) 2002 Robert Griebl
*
* based on the original compress42.c source
@ -293,6 +291,3 @@ extern int uncompress(int fd_in, int fd_out)
return 0;
}
#endif

5
archival/libunarchive/uncompress.c
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@ -1,8 +1,6 @@
#include "config.h"
#include "libbb.h"
#if defined CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
/* uncompress for busybox -- (c) 2002 Robert Griebl
*
* based on the original compress42.c source
@ -293,6 +291,3 @@ extern int uncompress(int fd_in, int fd_out)
return 0;
}
#endif

29
archival/tar.c
View File

@ -594,8 +594,27 @@ static llist_t *append_file_list_to_list(llist_t *list)
}
#endif
#ifdef CONFIG_FEATURE_TAR_COMPRESS
static char get_header_tar_Z(archive_handle_t *archive_handle)
{
/* Cant lseek over pipe's */
archive_handle->seek = seek_by_char;
static const char tar_options[]="ctxjT:X:C:f:Opvzk";
/* do the decompression, and cleanup */
if ((bb_xread_char(archive_handle->src_fd) != 0x1f) || (bb_xread_char(archive_handle->src_fd) != 0x9d)) {
bb_error_msg_and_die("Invalid magic");
}
archive_handle->src_fd = open_transformer(archive_handle->src_fd, uncompress);
archive_handle->offset = 0;
while (get_header_tar(archive_handle) == EXIT_SUCCESS);
/* Can only do one file at a time */
return(EXIT_FAILURE);
}
#endif
static const char tar_options[]="ctxjT:X:C:f:OpvzkZ";
#define CTX_CREATE 1
#define CTX_TEST 2
@ -610,6 +629,7 @@ static const char tar_options[]="ctxjT:X:C:f:Opvzk";
#define TAR_OPT_VERBOSE 1024
#define TAR_OPT_GZIP 2048
#define TAR_OPT_KEEP_OLD 4096
#define TAR_OPT_UNCOMPRESS 8192
int tar_main(int argc, char **argv)
{
@ -688,6 +708,13 @@ int tar_main(int argc, char **argv)
get_header_ptr = get_header_tar_bz2;
#else
bb_show_usage();
#endif
}
if(opt & TAR_OPT_UNCOMPRESS) {
#ifdef CONFIG_FEATURE_TAR_COMPRESS
get_header_ptr = get_header_tar_Z;
#else
bb_show_usage();
#endif
}
if(opt & TAR_OPT_EXCLUDE) {