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*: refactor handling of archived files. "tar f file.tar.lzma" now works too.

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function                                             old     new   delta
unpack_Z_stream                                        -    1229   +1229
open_zipped                                            -     176    +176
unpack_bz2_stream_prime                                -      60     +60
tar_main                                             642     677     +35
find_main                                            406     418     +12
sv_main                                             1222    1233     +11
decode_format_string                                 829     837      +8
cmp_main                                             641     649      +8
popstring                                            134     140      +6
filter_accept_list_reassign                          120     125      +5
parse_and_put_prompt                                 800     804      +4
passwd_main                                         1053    1049      -4
make_new_name_gunzip                                 119     114      -5
rpm_main                                            1688    1670     -18
prepare                                              302     283     -19
xmalloc_open_zipped_read_close                       135      61     -74
uncompress                                          1229       -   -1229
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 8/5 up/down: 1554/-1349)        Total: 205 bytes
This commit is contained in:
Denis Vlasenko
2008-08-05 13:10:34 +00:00
parent 9b44613202
commit e9ad84dfd4
21 changed files with 325 additions and 320 deletions
Download Patch File Download Diff File Expand all files Collapse all files

92
archival/tar.c
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@@ -36,7 +36,7 @@
#define block_buf bb_common_bufsiz1
#if !ENABLE_FEATURE_TAR_GZIP && !ENABLE_FEATURE_TAR_BZIP2
#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)
@@ -503,19 +503,19 @@ static int FAST_FUNC writeFileToTarball(const char *fileName, struct stat *statb
return TRUE;
}
#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2
#if !(ENABLE_FEATURE_TAR_GZIP && ENABLE_FEATURE_TAR_BZIP2)
#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
/* Don't inline: vfork scares gcc and pessimizes code */
static void NOINLINE vfork_compressor(int tar_fd, int gzip)
{
pid_t gzipPid;
#if ENABLE_FEATURE_TAR_GZIP && ENABLE_FEATURE_TAR_BZIP2
#if ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2
const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2";
#elif ENABLE_FEATURE_TAR_GZIP
#elif ENABLE_FEATURE_SEAMLESS_GZ
const char *zip_exec = "gzip";
#else /* only ENABLE_FEATURE_TAR_BZIP2 */
#else /* only ENABLE_FEATURE_SEAMLESS_BZ2 */
const char *zip_exec = "bzip2";
#endif
// On Linux, vfork never unpauses parent early, although standard
@@ -579,7 +579,7 @@ static void NOINLINE vfork_compressor(int tar_fd, int gzip)
bb_perror_msg_and_die("cannot exec %s", zip_exec);
}
}
#endif /* ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2 */
#endif /* ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 */
/* gcc 4.2.1 inlines it, making code bigger */
@@ -601,7 +601,7 @@ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0)
bb_perror_msg_and_die("cannot stat tar file");
#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2
#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
if (gzip)
vfork_compressor(tbInfo.tarFd, gzip);
#endif
@@ -637,7 +637,7 @@ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
if (errorFlag)
bb_error_msg("error exit delayed from previous errors");
#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2
#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
if (gzip) {
int status;
if (safe_waitpid(-1, &status, 0) == -1)
@@ -679,7 +679,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
#define append_file_list_to_list(x) 0
#endif
#if ENABLE_FEATURE_TAR_COMPRESS
#if ENABLE_FEATURE_SEAMLESS_Z
static char FAST_FUNC get_header_tar_Z(archive_handle_t *archive_handle)
{
/* Can't lseek over pipes */
@@ -692,7 +692,7 @@ static char FAST_FUNC get_header_tar_Z(archive_handle_t *archive_handle)
bb_error_msg_and_die("invalid magic");
}
open_transformer(archive_handle->src_fd, uncompress, "uncompress");
open_transformer(archive_handle->src_fd, unpack_Z_stream, "uncompress");
archive_handle->offset = 0;
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
continue;
@@ -729,14 +729,14 @@ static void handle_SIGCHLD(int status)
enum {
OPTBIT_KEEP_OLD = 7,
USE_FEATURE_TAR_CREATE( OPTBIT_CREATE ,)
USE_FEATURE_TAR_CREATE( OPTBIT_DEREFERENCE ,)
USE_FEATURE_TAR_BZIP2( OPTBIT_BZIP2 ,)
USE_FEATURE_TAR_LZMA( OPTBIT_LZMA ,)
USE_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
USE_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
USE_FEATURE_TAR_GZIP( OPTBIT_GZIP ,)
USE_FEATURE_TAR_COMPRESS(OPTBIT_COMPRESS ,)
USE_FEATURE_TAR_CREATE( OPTBIT_CREATE ,)
USE_FEATURE_TAR_CREATE( OPTBIT_DEREFERENCE ,)
USE_FEATURE_SEAMLESS_BZ2( OPTBIT_BZIP2 ,)
USE_FEATURE_SEAMLESS_LZMA(OPTBIT_LZMA ,)
USE_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
USE_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
USE_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
USE_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
OPTBIT_NOPRESERVE_OWN,
OPTBIT_NOPRESERVE_PERM,
OPT_TEST = 1 << 0, // t
@@ -747,14 +747,14 @@ enum {
OPT_P = 1 << 5, // p
OPT_VERBOSE = 1 << 6, // v
OPT_KEEP_OLD = 1 << 7, // k
OPT_CREATE = USE_FEATURE_TAR_CREATE( (1<<OPTBIT_CREATE )) + 0, // c
OPT_DEREFERENCE = USE_FEATURE_TAR_CREATE( (1<<OPTBIT_DEREFERENCE )) + 0, // h
OPT_BZIP2 = USE_FEATURE_TAR_BZIP2( (1<<OPTBIT_BZIP2 )) + 0, // j
OPT_LZMA = USE_FEATURE_TAR_LZMA( (1<<OPTBIT_LZMA )) + 0, // a
OPT_INCLUDE_FROM = USE_FEATURE_TAR_FROM( (1<<OPTBIT_INCLUDE_FROM)) + 0, // T
OPT_EXCLUDE_FROM = USE_FEATURE_TAR_FROM( (1<<OPTBIT_EXCLUDE_FROM)) + 0, // X
OPT_GZIP = USE_FEATURE_TAR_GZIP( (1<<OPTBIT_GZIP )) + 0, // z
OPT_COMPRESS = USE_FEATURE_TAR_COMPRESS((1<<OPTBIT_COMPRESS )) + 0, // Z
OPT_CREATE = USE_FEATURE_TAR_CREATE( (1 << OPTBIT_CREATE )) + 0, // c
OPT_DEREFERENCE = USE_FEATURE_TAR_CREATE( (1 << OPTBIT_DEREFERENCE )) + 0, // h
OPT_BZIP2 = USE_FEATURE_SEAMLESS_BZ2( (1 << OPTBIT_BZIP2 )) + 0, // j
OPT_LZMA = USE_FEATURE_SEAMLESS_LZMA((1 << OPTBIT_LZMA )) + 0, // a
OPT_INCLUDE_FROM = USE_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
OPT_EXCLUDE_FROM = USE_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
OPT_GZIP = USE_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
OPT_COMPRESS = USE_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
OPT_NOPRESERVE_OWN = 1 << OPTBIT_NOPRESERVE_OWN , // no-same-owner
OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions
};
@@ -772,20 +772,20 @@ static const char tar_longopts[] ALIGN1 =
"create\0" No_argument "c"
"dereference\0" No_argument "h"
# endif
# if ENABLE_FEATURE_TAR_BZIP2
# if ENABLE_FEATURE_SEAMLESS_BZ2
"bzip2\0" No_argument "j"
# endif
# if ENABLE_FEATURE_TAR_LZMA
# if ENABLE_FEATURE_SEAMLESS_LZMA
"lzma\0" No_argument "a"
# endif
# if ENABLE_FEATURE_TAR_FROM
"files-from\0" Required_argument "T"
"exclude-from\0" Required_argument "X"
# endif
# if ENABLE_FEATURE_TAR_GZIP
# if ENABLE_FEATURE_SEAMLESS_GZ
"gzip\0" No_argument "z"
# endif
# if ENABLE_FEATURE_TAR_COMPRESS
# if ENABLE_FEATURE_SEAMLESS_Z
"compress\0" No_argument "Z"
# endif
"no-same-owner\0" No_argument "\xfd"
@@ -834,12 +834,12 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
#endif
opt = getopt32(argv,
"txC:f:Opvk"
USE_FEATURE_TAR_CREATE( "ch" )
USE_FEATURE_TAR_BZIP2( "j" )
USE_FEATURE_TAR_LZMA( "a" )
USE_FEATURE_TAR_FROM( "T:X:")
USE_FEATURE_TAR_GZIP( "z" )
USE_FEATURE_TAR_COMPRESS("Z" )
USE_FEATURE_TAR_CREATE( "ch" )
USE_FEATURE_SEAMLESS_BZ2( "j" )
USE_FEATURE_SEAMLESS_LZMA("a" )
USE_FEATURE_TAR_FROM( "T:X:")
USE_FEATURE_SEAMLESS_GZ( "z" )
USE_FEATURE_SEAMLESS_Z( "Z" )
, &base_dir // -C dir
, &tar_filename // -f filename
USE_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
@@ -922,8 +922,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
tar_stream = stdout;
/* Mimicking GNU tar 1.15.1: */
flags = O_WRONLY|O_CREAT|O_TRUNC;
/* was doing unlink; open(O_WRONLY|O_CREAT|O_EXCL); why? */
flags = O_WRONLY | O_CREAT | O_TRUNC;
} else {
tar_stream = stdin;
flags = O_RDONLY;
@@ -933,7 +932,14 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
tar_handle->src_fd = fileno(tar_stream);
tar_handle->seek = seek_by_read;
} else {
tar_handle->src_fd = xopen(tar_filename, flags);
if (ENABLE_FEATURE_TAR_AUTODETECT && flags == O_RDONLY) {
get_header_ptr = get_header_tar;
tar_handle->src_fd = open_zipped(tar_filename);
if (tar_handle->src_fd < 0)
bb_perror_msg_and_die("can't open '%s'", tar_filename);
} else {
tar_handle->src_fd = xopen(tar_filename, flags);
}
}
}
@@ -947,11 +953,11 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
/* create an archive */
if (opt & OPT_CREATE) {
#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2
#if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
int zipMode = 0;
if (ENABLE_FEATURE_TAR_GZIP && (opt & OPT_GZIP))
if (ENABLE_FEATURE_SEAMLESS_GZ && (opt & OPT_GZIP))
zipMode = 1;
if (ENABLE_FEATURE_TAR_BZIP2 && (opt & OPT_BZIP2))
if (ENABLE_FEATURE_SEAMLESS_BZ2 && (opt & OPT_BZIP2))
zipMode = 2;
#endif
/* NB: writeTarFile() closes tar_handle->src_fd */