*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
/* TODO: security with -C DESTDIR option can be enhanced.
* Consider tar file created via:
* $ tar cvf bug.tar anything.txt
* This doesn't feel right, and IIRC GNU tar doesn't do that.
*/
+//config:config TAR
+//config: bool "tar"
+//config: default y
+//config: help
+//config: tar is an archiving program. It's commonly used with gzip to
+//config: create compressed archives. It's probably the most widely used
+//config: UNIX archive program.
+//config:
+//config:config FEATURE_TAR_LONG_OPTIONS
+//config: bool "Enable long options"
+//config: default y
+//config: depends on TAR && LONG_OPTS
+//config:
+//config:config FEATURE_TAR_CREATE
+//config: bool "Enable -c (archive creation)"
+//config: default y
+//config: depends on TAR
+//config:
+//config:config FEATURE_TAR_AUTODETECT
+//config: bool "Autodetect compressed tarballs"
+//config: default y
+//config: depends on TAR && (FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA || FEATURE_SEAMLESS_XZ)
+//config: help
+//config: With this option tar can automatically detect compressed
+//config: tarballs. Currently it works only on files (not pipes etc).
+//config:
+//config:config FEATURE_TAR_FROM
+//config: bool "Enable -X (exclude from) and -T (include from) options)"
+//config: default y
+//config: depends on TAR
+//config: help
+//config: If you enable this option you'll be able to specify
+//config: a list of files to include or exclude from an archive.
+//config:
+//config:config FEATURE_TAR_OLDGNU_COMPATIBILITY
+//config: bool "Support old tar header format"
+//config: default y
+//config: depends on TAR || DPKG
+//config: help
+//config: This option is required to unpack archives created in
+//config: the old GNU format; help to kill this old format by
+//config: repacking your ancient archives with the new format.
+//config:
+//config:config FEATURE_TAR_OLDSUN_COMPATIBILITY
+//config: bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
+//config: default y
+//config: depends on TAR || DPKG
+//config: help
+//config: This option is required to unpack archives created by some old
+//config: version of Sun's tar (it was calculating checksum using signed
+//config: arithmetic). It is said to be fixed in newer Sun tar, but "old"
+//config: tarballs still exist.
+//config:
+//config:config FEATURE_TAR_GNU_EXTENSIONS
+//config: bool "Support GNU tar extensions (long filenames)"
+//config: default y
+//config: depends on TAR || DPKG
+//config:
+//config:config FEATURE_TAR_TO_COMMAND
+//config: bool "Support writing to an external program (--to-command)"
+//config: default y
+//config: depends on TAR && FEATURE_TAR_LONG_OPTIONS
+//config: help
+//config: If you enable this option you'll be able to instruct tar to send
+//config: the contents of each extracted file to the standard input of an
+//config: external program.
+//config:
+//config:config FEATURE_TAR_UNAME_GNAME
+//config: bool "Enable use of user and group names"
+//config: default y
+//config: depends on TAR
+//config: help
+//config: Enable use of user and group names in tar. This affects contents
+//config: listings (-t) and preserving permissions when unpacking (-p).
+//config: +200 bytes.
+//config:
+//config:config FEATURE_TAR_NOPRESERVE_TIME
+//config: bool "Enable -m (do not preserve time) GNU option"
+//config: default y
+//config: depends on TAR
+//config:
+//config:config FEATURE_TAR_SELINUX
+//config: bool "Support extracting SELinux labels"
+//config: default n
+//config: depends on TAR && SELINUX
+//config: help
+//config: With this option busybox supports restoring SELinux labels
+//config: when extracting files from tar archives.
+
+//applet:IF_TAR(APPLET(tar, BB_DIR_BIN, BB_SUID_DROP))
+//kbuild:lib-$(CONFIG_TAR) += tar.o
+
#include <fnmatch.h>
#include "libbb.h"
+#include "common_bufsiz.h"
#include "bb_archive.h"
/* FIXME: Stop using this non-standard feature */
#ifndef FNM_LEADING_DIR
# define FNM_LEADING_DIR 0
#endif
-
-//#define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
-#define DBG(...) ((void)0)
+#if 0
+# define DBG(fmt, ...) bb_error_msg("%s: " fmt, __func__, ## __VA_ARGS__)
+#else
+# define DBG(...) ((void)0)
+#endif
+#define DBG_OPTION_PARSING 0
#define block_buf bb_common_bufsiz1
-
-
-#if !ENABLE_FEATURE_SEAMLESS_GZ && !ENABLE_FEATURE_SEAMLESS_BZ2
-/* Do not pass gzip flag to writeTarFile() */
-#define writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude, gzip) \
- writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude)
-#endif
+#define INIT_G() do { setup_common_bufsiz(); } while (0)
#if ENABLE_FEATURE_TAR_CREATE
&& (filesize <= 0x3fffffffffffffffffffffffLL)
#endif
) {
- /* GNU tar uses "base-256 encoding" for very large numbers.
- * Encoding is binary, with highest bit always set as a marker
- * and sign in next-highest bit:
- * 80 00 .. 00 - zero
- * bf ff .. ff - largest positive number
- * ff ff .. ff - minus 1
- * c0 00 .. 00 - smallest negative number
+ /* GNU tar uses "base-256 encoding" for very large numbers.
+ * Encoding is binary, with highest bit always set as a marker
+ * and sign in next-highest bit:
+ * 80 00 .. 00 - zero
+ * bf ff .. ff - largest positive number
+ * ff ff .. ff - minus 1
+ * c0 00 .. 00 - smallest negative number
*/
char *p8 = header.size + sizeof(header.size);
do {
/*
* Check to see if we are dealing with a hard link.
* If so -
- * Treat the first occurance of a given dev/inode as a file while
- * treating any additional occurances as hard links. This is done
+ * Treat the first occurrence of a given dev/inode as a file while
+ * treating any additional occurrences as hard links. This is done
* by adding the file information to the HardLinkInfo linked list.
*/
tbInfo->hlInfo = NULL;
return TRUE;
}
-#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
-# if !(ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2)
-# define vfork_compressor(tar_fd, gzip) vfork_compressor(tar_fd)
-# endif
+#if SEAMLESS_COMPRESSION
/* Don't inline: vfork scares gcc and pessimizes code */
-static void NOINLINE vfork_compressor(int tar_fd, int gzip)
+static void NOINLINE vfork_compressor(int tar_fd, const char *gzip)
{
pid_t gzipPid;
-# if ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2
- const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2";
-# elif ENABLE_FEATURE_SEAMLESS_GZ
- const char *zip_exec = "gzip";
-# else /* only ENABLE_FEATURE_SEAMLESS_BZ2 */
- const char *zip_exec = "bzip2";
-# endif
+
// On Linux, vfork never unpauses parent early, although standard
// allows for that. Do we want to waste bytes checking for it?
# define WAIT_FOR_CHILD 0
signal(SIGPIPE, SIG_IGN); /* we only want EPIPE on errors */
-# if defined(__GNUC__) && __GNUC__
- /* Avoid vfork clobbering */
- (void) &zip_exec;
-# endif
-
gzipPid = xvfork();
if (gzipPid == 0) {
xmove_fd(gzipDataPipe.rd, 0);
xmove_fd(tar_fd, 1);
/* exec gzip/bzip2 program/applet */
- BB_EXECLP(zip_exec, zip_exec, "-f", NULL);
+ BB_EXECLP(gzip, gzip, "-f", (char *)0);
vfork_exec_errno = errno;
_exit(EXIT_FAILURE);
}
# endif
if (vfork_exec_errno) {
errno = vfork_exec_errno;
- bb_perror_msg_and_die("can't execute '%s'", zip_exec);
+ bb_perror_msg_and_die("can't execute '%s'", gzip);
}
}
-#endif /* ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 */
+#endif /* SEAMLESS_COMPRESSION */
+#if !SEAMLESS_COMPRESSION
+/* Do not pass gzip flag to writeTarFile() */
+#define writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude, gzip) \
+ writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude)
+#endif
/* gcc 4.2.1 inlines it, making code bigger */
static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
- int dereferenceFlag, const llist_t *include,
- const llist_t *exclude, int gzip)
+ int recurseFlags, const llist_t *include,
+ const llist_t *exclude, const char *gzip)
{
int errorFlag = FALSE;
struct TarBallInfo tbInfo;
* can avoid including the tarball into itself.... */
xfstat(tbInfo.tarFd, &tbInfo.tarFileStatBuf, "can't stat tar file");
-#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
+#if SEAMLESS_COMPRESSION
if (gzip)
vfork_compressor(tbInfo.tarFd, gzip);
#endif
/* Read the directory/files and iterate over them one at a time */
while (include) {
- if (!recursive_action(include->data, ACTION_RECURSE |
- (dereferenceFlag ? ACTION_FOLLOWLINKS : 0),
+ if (!recursive_action(include->data, recurseFlags,
writeFileToTarball, writeFileToTarball, &tbInfo, 0)
) {
errorFlag = TRUE;
if (errorFlag)
bb_error_msg("error exit delayed from previous errors");
-#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
+#if SEAMLESS_COMPRESSION
if (gzip) {
int status;
if (safe_waitpid(-1, &status, 0) == -1)
#endif
return errorFlag;
}
-#else
-int writeTarFile(int tar_fd, int verboseFlag,
- int dereferenceFlag, const llist_t *include,
- const llist_t *exclude, int gzip);
-#endif /* FEATURE_TAR_CREATE */
+#else /* !FEATURE_TAR_CREATE */
+# define writeTarFile(...) 0
+#endif
#if ENABLE_FEATURE_TAR_FROM
static llist_t *append_file_list_to_list(llist_t *list)
char *cp = last_char_is(line, '/');
if (cp > line)
*cp = '\0';
- llist_add_to(&newlist, line);
+ llist_add_to_end(&newlist, line);
}
fclose(src_stream);
}
return newlist;
}
-#else
-# define append_file_list_to_list(x) 0
#endif
//usage:#define tar_trivial_usage
//usage: "-[" IF_FEATURE_TAR_CREATE("c") "xt"
//usage: IF_FEATURE_SEAMLESS_Z("Z")
//usage: IF_FEATURE_SEAMLESS_GZ("z")
+//usage: IF_FEATURE_SEAMLESS_XZ("J")
//usage: IF_FEATURE_SEAMLESS_BZ2("j")
//usage: IF_FEATURE_SEAMLESS_LZMA("a")
//usage: IF_FEATURE_TAR_CREATE("h")
//usage: IF_FEATURE_SEAMLESS_GZ(
//usage: "\n z (De)compress using gzip"
//usage: )
+//usage: IF_FEATURE_SEAMLESS_XZ(
+//usage: "\n J (De)compress using xz"
+//usage: )
//usage: IF_FEATURE_SEAMLESS_BZ2(
//usage: "\n j (De)compress using bzip2"
//usage: )
// o no-same-owner
// p same-permissions
// k keep-old
+// no-recursion
// numeric-owner
// no-same-permissions
// overwrite
IF_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
- IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) // 16th bit
+ IF_FEATURE_SEAMLESS_XZ( OPTBIT_XZ ,) // 16th bit
+ IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ OPTBIT_STRIP_COMPONENTS,
+ OPTBIT_NORECURSION,
IF_FEATURE_TAR_TO_COMMAND(OPTBIT_2COMMAND ,)
OPTBIT_NUMERIC_OWNER,
OPTBIT_NOPRESERVE_PERM,
OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
+ OPT_XZ = IF_FEATURE_SEAMLESS_XZ( (1 << OPTBIT_XZ )) + 0, // J
OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
- OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
- OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
- OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
- OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
- OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
-
- OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_COMPRESS),
+ OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
+ OPT_STRIP_COMPONENTS = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_STRIP_COMPONENTS)) + 0, // strip-components
+ OPT_NORECURSION = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NORECURSION )) + 0, // no-recursion
+ OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
+ OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
+ OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
+ OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
+
+ OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_XZ | OPT_COMPRESS),
};
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_SEAMLESS_GZ
"gzip\0" No_argument "z"
# endif
+# if ENABLE_FEATURE_SEAMLESS_XZ
+ "xz\0" No_argument "J"
+# endif
# if ENABLE_FEATURE_SEAMLESS_Z
"compress\0" No_argument "Z"
# endif
# if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
"touch\0" No_argument "m"
# endif
+ "strip-components\0" Required_argument "\xf9"
+ "no-recursion\0" No_argument "\xfa"
# if ENABLE_FEATURE_TAR_TO_COMMAND
"to-command\0" Required_argument "\xfb"
# endif
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
llist_t *excludes = NULL;
#endif
+ INIT_G();
/* Initialise default values */
tar_handle = init_handle();
/* Prepend '-' to the first argument if required */
opt_complementary = "--:" // first arg is options
"tt:vv:" // count -t,-v
- IF_FEATURE_TAR_FROM("X::T::") // cumulative lists
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
- "\xff::" // cumulative lists for --exclude
+ "\xff::" // --exclude=PATTERN is a list
#endif
IF_FEATURE_TAR_CREATE("c:") "t:x:" // at least one of these is reqd
IF_FEATURE_TAR_CREATE("c--tx:t--cx:x--ct") // mutually exclusive
- IF_NOT_FEATURE_TAR_CREATE("t--x:x--t"); // mutually exclusive
+ IF_NOT_FEATURE_TAR_CREATE("t--x:x--t") // mutually exclusive
+#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ ":\xf9+" // --strip-components=NUM
+#endif
+ ;
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
applet_long_options = tar_longopts;
#endif
#if ENABLE_DESKTOP
+ /* Lie to buildroot when it starts asking stupid questions. */
+ if (argv[1] && strcmp(argv[1], "--version") == 0) {
+ // Output of 'tar --version' examples:
+ // tar (GNU tar) 1.15.1
+ // tar (GNU tar) 1.25
+ // bsdtar 2.8.3 - libarchive 2.8.3
+ puts("tar (busybox) " BB_VER);
+ return 0;
+ }
if (argv[1] && argv[1][0] != '-') {
/* Compat:
* 1st argument without dash handles options with parameters
#endif
opt = getopt32(argv,
"txC:f:Oopvk"
- IF_FEATURE_TAR_CREATE( "ch" )
- IF_FEATURE_SEAMLESS_BZ2( "j" )
- IF_FEATURE_SEAMLESS_LZMA("a" )
- IF_FEATURE_TAR_FROM( "T:X:")
- IF_FEATURE_SEAMLESS_GZ( "z" )
- IF_FEATURE_SEAMLESS_Z( "Z" )
+ IF_FEATURE_TAR_CREATE( "ch" )
+ IF_FEATURE_SEAMLESS_BZ2( "j" )
+ IF_FEATURE_SEAMLESS_LZMA("a" )
+ IF_FEATURE_TAR_FROM( "T:*X:*")
+ IF_FEATURE_SEAMLESS_GZ( "z" )
+ IF_FEATURE_SEAMLESS_XZ( "J" )
+ IF_FEATURE_SEAMLESS_Z( "Z" )
IF_FEATURE_TAR_NOPRESERVE_TIME("m")
+ IF_FEATURE_TAR_LONG_OPTIONS("\xf9:") // --strip-components
, &base_dir // -C dir
, &tar_filename // -f filename
IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
IF_FEATURE_TAR_FROM(, &(tar_handle->reject)) // X
+#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ , &tar_handle->tar__strip_components // --strip-components
+#endif
IF_FEATURE_TAR_TO_COMMAND(, &(tar_handle->tar__to_command)) // --to-command
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
, &excludes // --exclude
, &verboseFlag // combined count for -t and -v
, &verboseFlag // combined count for -t and -v
);
- //bb_error_msg("opt:%08x", opt);
+#if DBG_OPTION_PARSING
+ bb_error_msg("opt: 0x%08x", opt);
+# define showopt(o) bb_error_msg("opt & %s(%x): %x", #o, o, opt & o);
+ showopt(OPT_TEST );
+ showopt(OPT_EXTRACT );
+ showopt(OPT_BASEDIR );
+ showopt(OPT_TARNAME );
+ showopt(OPT_2STDOUT );
+ showopt(OPT_NOPRESERVE_OWNER);
+ showopt(OPT_P );
+ showopt(OPT_VERBOSE );
+ showopt(OPT_KEEP_OLD );
+ showopt(OPT_CREATE );
+ showopt(OPT_DEREFERENCE );
+ showopt(OPT_BZIP2 );
+ showopt(OPT_LZMA );
+ showopt(OPT_INCLUDE_FROM );
+ showopt(OPT_EXCLUDE_FROM );
+ showopt(OPT_GZIP );
+ showopt(OPT_XZ );
+ showopt(OPT_COMPRESS );
+ showopt(OPT_NOPRESERVE_TIME );
+ showopt(OPT_STRIP_COMPONENTS);
+ showopt(OPT_NORECURSION );
+ showopt(OPT_2COMMAND );
+ showopt(OPT_NUMERIC_OWNER );
+ showopt(OPT_NOPRESERVE_PERM );
+ showopt(OPT_OVERWRITE );
+ showopt(OPT_ANY_COMPRESS );
+ bb_error_msg("base_dir:'%s'", base_dir);
+ bb_error_msg("tar_filename:'%s'", tar_filename);
+ bb_error_msg("verboseFlag:%d", verboseFlag);
+ bb_error_msg("tar_handle->tar__to_command:'%s'", tar_handle->tar__to_command);
+ bb_error_msg("tar_handle->tar__strip_components:%u", tar_handle->tar__strip_components);
+ return 0;
+# undef showopt
+#endif
argv += optind;
- if (verboseFlag) tar_handle->action_header = header_verbose_list;
- if (verboseFlag == 1) tar_handle->action_header = header_list;
+ if (verboseFlag)
+ tar_handle->action_header = header_verbose_list;
+ if (verboseFlag == 1)
+ tar_handle->action_header = header_list;
if (opt & OPT_EXTRACT)
tar_handle->action_data = data_extract_all;
&& flags == O_RDONLY
&& !(opt & OPT_ANY_COMPRESS)
) {
- tar_handle->src_fd = open_zipped(tar_filename);
+ tar_handle->src_fd = open_zipped(tar_filename, /*fail_if_not_compressed:*/ 0);
if (tar_handle->src_fd < 0)
bb_perror_msg_and_die("can't open '%s'", tar_filename);
} else {
if (base_dir)
xchdir(base_dir);
- //if (SEAMLESS_COMPRESSION || OPT_COMPRESS)
+ //if (SEAMLESS_COMPRESSION)
// /* We need to know whether child (gzip/bzip/etc) exits abnormally */
// signal(SIGCHLD, check_errors_in_children);
+#if ENABLE_FEATURE_TAR_CREATE
/* Create an archive */
if (opt & OPT_CREATE) {
-#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
- int zipMode = 0;
- if (ENABLE_FEATURE_SEAMLESS_GZ && (opt & OPT_GZIP))
- zipMode = 1;
- if (ENABLE_FEATURE_SEAMLESS_BZ2 && (opt & OPT_BZIP2))
- zipMode = 2;
-#endif
+# if SEAMLESS_COMPRESSION
+ const char *zipMode = NULL;
+ if (opt & OPT_COMPRESS)
+ zipMode = "compress";
+ if (opt & OPT_GZIP)
+ zipMode = "gzip";
+ if (opt & OPT_BZIP2)
+ zipMode = "bzip2";
+ if (opt & OPT_LZMA)
+ zipMode = "lzma";
+ if (opt & OPT_XZ)
+ zipMode = "xz";
+# endif
/* NB: writeTarFile() closes tar_handle->src_fd */
- return writeTarFile(tar_handle->src_fd, verboseFlag, opt & OPT_DEREFERENCE,
+ return writeTarFile(tar_handle->src_fd, verboseFlag,
+ (opt & OPT_DEREFERENCE ? ACTION_FOLLOWLINKS : 0)
+ | (opt & OPT_NORECURSION ? 0 : ACTION_RECURSE),
tar_handle->accept,
tar_handle->reject, zipMode);
}
+#endif
if (opt & OPT_ANY_COMPRESS) {
- USE_FOR_MMU(IF_DESKTOP(long long) int FAST_FUNC (*xformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd);)
+ USE_FOR_MMU(IF_DESKTOP(long long) int FAST_FUNC (*xformer)(transformer_state_t *xstate);)
USE_FOR_NOMMU(const char *xformer_prog;)
- if (opt & OPT_COMPRESS)
- USE_FOR_MMU(xformer = unpack_Z_stream;)
+ if (opt & OPT_COMPRESS) {
+ USE_FOR_MMU(IF_FEATURE_SEAMLESS_Z(xformer = unpack_Z_stream;))
USE_FOR_NOMMU(xformer_prog = "uncompress";)
- if (opt & OPT_GZIP)
- USE_FOR_MMU(xformer = unpack_gz_stream;)
+ }
+ if (opt & OPT_GZIP) {
+ USE_FOR_MMU(IF_FEATURE_SEAMLESS_GZ(xformer = unpack_gz_stream;))
USE_FOR_NOMMU(xformer_prog = "gunzip";)
- if (opt & OPT_BZIP2)
- USE_FOR_MMU(xformer = unpack_bz2_stream;)
+ }
+ if (opt & OPT_BZIP2) {
+ USE_FOR_MMU(IF_FEATURE_SEAMLESS_BZ2(xformer = unpack_bz2_stream;))
USE_FOR_NOMMU(xformer_prog = "bunzip2";)
- if (opt & OPT_LZMA)
- USE_FOR_MMU(xformer = unpack_lzma_stream;)
+ }
+ if (opt & OPT_LZMA) {
+ USE_FOR_MMU(IF_FEATURE_SEAMLESS_LZMA(xformer = unpack_lzma_stream;))
USE_FOR_NOMMU(xformer_prog = "unlzma";)
+ }
+ if (opt & OPT_XZ) {
+ USE_FOR_MMU(IF_FEATURE_SEAMLESS_XZ(xformer = unpack_xz_stream;))
+ USE_FOR_NOMMU(xformer_prog = "unxz";)
+ }
- open_transformer_with_sig(tar_handle->src_fd, xformer, xformer_prog);
+ fork_transformer_with_sig(tar_handle->src_fd, xformer, xformer_prog);
/* Can't lseek over pipes */
tar_handle->seek = seek_by_read;
/*tar_handle->offset = 0; - already is */
}
+ /* Zero processed headers (== empty file) is not a valid tarball.
+ * We (ab)use bb_got_signal as exitcode here,
+ * because check_errors_in_children() uses _it_ as error indicator.
+ */
+ bb_got_signal = EXIT_FAILURE;
+
while (get_header_tar(tar_handle) == EXIT_SUCCESS)
- continue;
+ bb_got_signal = EXIT_SUCCESS; /* saw at least one header, good */
/* Check that every file that should have been extracted was */
while (tar_handle->accept) {
close(tar_handle->src_fd);
if (SEAMLESS_COMPRESSION || OPT_COMPRESS) {
+ /* Set bb_got_signal to 1 if a child died with !0 exitcode */
check_errors_in_children(0);
- return bb_got_signal;
}
- return EXIT_SUCCESS;
+
+ return bb_got_signal;
}
projects / oweals / busybox.git / blobdiff