diff options
Diffstat (limited to 'archival/tar.c')
| -rw-r--r-- | archival/tar.c | 71 |
1 files changed, 31 insertions, 40 deletions
diff --git a/archival/tar.c b/archival/tar.c index 766b79b..af38ac5 100644 --- a/archival/tar.c +++ b/archival/tar.c @@ -690,31 +690,6 @@ static llist_t *append_file_list_to_list(llist_t *list) # define append_file_list_to_list(x) 0 #endif -#if ENABLE_FEATURE_SEAMLESS_Z -static char FAST_FUNC get_header_tar_Z(archive_handle_t *archive_handle) -{ - /* Can't lseek over pipes */ - archive_handle->seek = seek_by_read; - - /* do the decompression, and cleanup */ - if (xread_char(archive_handle->src_fd) != 0x1f - || xread_char(archive_handle->src_fd) != 0x9d - ) { - bb_error_msg_and_die("invalid magic"); - } - - open_transformer(archive_handle->src_fd, unpack_Z_stream, "uncompress"); - archive_handle->offset = 0; - while (get_header_tar(archive_handle) == EXIT_SUCCESS) - continue; - - /* Can only do one file at a time */ - return EXIT_FAILURE; -} -#else -# define get_header_tar_Z NULL -#endif - #ifdef CHECK_FOR_CHILD_EXITCODE /* Looks like it isn't needed - tar detects malformed (truncated) * archive if e.g. bunzip2 fails */ @@ -843,6 +818,8 @@ enum { 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), }; #if ENABLE_FEATURE_TAR_LONG_OPTIONS static const char tar_longopts[] ALIGN1 = @@ -901,7 +878,6 @@ static const char tar_longopts[] ALIGN1 = int tar_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int tar_main(int argc UNUSED_PARAM, char **argv) { - char FAST_FUNC (*get_header_ptr)(archive_handle_t *) = get_header_tar; archive_handle_t *tar_handle; char *base_dir = NULL; const char *tar_filename = "-"; @@ -1017,18 +993,6 @@ int tar_main(int argc UNUSED_PARAM, char **argv) tar_handle->ah_flags |= ARCHIVE_O_TRUNC; } - if (opt & OPT_GZIP) - get_header_ptr = get_header_tar_gz; - - if (opt & OPT_BZIP2) - get_header_ptr = get_header_tar_bz2; - - if (opt & OPT_LZMA) - get_header_ptr = get_header_tar_lzma; - - if (opt & OPT_COMPRESS) - get_header_ptr = get_header_tar_Z; - if (opt & OPT_NOPRESERVE_TIME) tar_handle->ah_flags &= ~ARCHIVE_RESTORE_DATE; @@ -1081,7 +1045,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv) } else { if (ENABLE_FEATURE_TAR_AUTODETECT && flags == O_RDONLY - && get_header_ptr == get_header_tar + && !(opt & OPT_ANY_COMPRESS) ) { tar_handle->src_fd = open_zipped(tar_filename); if (tar_handle->src_fd < 0) @@ -1115,7 +1079,30 @@ int tar_main(int argc UNUSED_PARAM, char **argv) tar_handle->reject, zipMode); } - while (get_header_ptr(tar_handle) == EXIT_SUCCESS) + 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_NOMMU(const char *xformer_prog;) + + if (opt & OPT_COMPRESS) + USE_FOR_MMU(xformer = unpack_Z_stream;) + USE_FOR_NOMMU(xformer_prog = "uncompress";) + if (opt & OPT_GZIP) + USE_FOR_MMU(xformer = unpack_gz_stream;) + USE_FOR_NOMMU(xformer_prog = "gunzip";) + if (opt & OPT_BZIP2) + USE_FOR_MMU(xformer = unpack_bz2_stream;) + USE_FOR_NOMMU(xformer_prog = "bunzip2";) + if (opt & OPT_LZMA) + USE_FOR_MMU(xformer = unpack_lzma_stream;) + USE_FOR_NOMMU(xformer_prog = "unlzma";) + + open_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 */ + } + + while (get_header_tar(tar_handle) == EXIT_SUCCESS) continue; /* Check that every file that should have been extracted was */ @@ -1131,5 +1118,9 @@ int tar_main(int argc UNUSED_PARAM, char **argv) if (ENABLE_FEATURE_CLEAN_UP /* && tar_handle->src_fd != STDIN_FILENO */) close(tar_handle->src_fd); +#ifdef CHECK_FOR_CHILD_EXITCODE + return bb_got_signal; +#else return EXIT_SUCCESS; +#endif } |