diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-12 02:13:12 +0000 |
---|---|---|
committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-12 02:13:12 +0000 |
commit | 059c91711f664927534246bd5c1d5e202fcf8e1d (patch) | |
tree | bf40a8f1895af5bae790c65435c8d4ae621c55cf /archival/libunarchive | |
parent | 4bfb84db4e941e227f07346a3b3a56afd7d1e3fe (diff) |
open_transformer: do not duplicate "<program> -cf -"
text data bss dec hex filename
677858 738 7236 685832 a7708 busybox_old
677804 738 7236 685778 a76d2 busybox_unstripped
Diffstat (limited to 'archival/libunarchive')
-rw-r--r-- | archival/libunarchive/get_header_tar_bz2.c | 2 | ||||
-rw-r--r-- | archival/libunarchive/get_header_tar_gz.c | 2 | ||||
-rw-r--r-- | archival/libunarchive/get_header_tar_lzma.c | 2 | ||||
-rw-r--r-- | archival/libunarchive/open_transformer.c | 26 |
4 files changed, 17 insertions, 15 deletions
diff --git a/archival/libunarchive/get_header_tar_bz2.c b/archival/libunarchive/get_header_tar_bz2.c index 6d4f5851e..c2cbaff5f 100644 --- a/archival/libunarchive/get_header_tar_bz2.c +++ b/archival/libunarchive/get_header_tar_bz2.c @@ -11,7 +11,7 @@ char get_header_tar_bz2(archive_handle_t *archive_handle) /* Can't lseek over pipes */ archive_handle->seek = seek_by_read; - archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_bz2_stream, "bunzip2", "bunzip2", "-cf", "-", NULL); + archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_bz2_stream, "bunzip2"); archive_handle->offset = 0; while (get_header_tar(archive_handle) == EXIT_SUCCESS) continue; diff --git a/archival/libunarchive/get_header_tar_gz.c b/archival/libunarchive/get_header_tar_gz.c index dd655f557..9772e33fb 100644 --- a/archival/libunarchive/get_header_tar_gz.c +++ b/archival/libunarchive/get_header_tar_gz.c @@ -25,7 +25,7 @@ char get_header_tar_gz(archive_handle_t *archive_handle) } #endif - archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip", "gunzip", "-cf", "-", NULL); + archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip"); archive_handle->offset = 0; while (get_header_tar(archive_handle) == EXIT_SUCCESS) continue; diff --git a/archival/libunarchive/get_header_tar_lzma.c b/archival/libunarchive/get_header_tar_lzma.c index cf73824e3..c859dcc58 100644 --- a/archival/libunarchive/get_header_tar_lzma.c +++ b/archival/libunarchive/get_header_tar_lzma.c @@ -14,7 +14,7 @@ char get_header_tar_lzma(archive_handle_t * archive_handle) /* Can't lseek over pipes */ archive_handle->seek = seek_by_read; - archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_lzma_stream, "unlzma", "unlzma", "-cf", "-", NULL); + archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_lzma_stream, "unlzma"); archive_handle->offset = 0; while (get_header_tar(archive_handle) == EXIT_SUCCESS) continue; diff --git a/archival/libunarchive/open_transformer.c b/archival/libunarchive/open_transformer.c index 355613a67..757a2a389 100644 --- a/archival/libunarchive/open_transformer.c +++ b/archival/libunarchive/open_transformer.c @@ -8,12 +8,12 @@ /* transformer(), more than meets the eye */ /* - * On MMU machine, the transform_prog and ... are stripped - * by a macro in include/unarchive.h. On NOMMU, transformer is stripped. + * On MMU machine, the transform_prog is removed by macro magic + * in include/unarchive.h. On NOMMU, transformer is removed. */ int open_transformer(int src_fd, USE_DESKTOP(long long) int (*transformer)(int src_fd, int dst_fd), - const char *transform_prog, ...) + const char *transform_prog) { int fd_pipe[2]; int pid; @@ -29,9 +29,6 @@ int open_transformer(int src_fd, bb_perror_msg_and_die("fork failed"); if (pid == 0) { -#if !BB_MMU - va_list ap; -#endif /* child process */ close(fd_pipe[0]); /* We don't wan't to read from the parent */ // FIXME: error check? @@ -43,12 +40,17 @@ int open_transformer(int src_fd, } exit(0); #else - xmove_fd(src_fd, 0); - xmove_fd(fd_pipe[1], 1); - va_start(ap, transform_prog); - /* hoping that va_list -> char** on our CPU is working... */ - BB_EXECVP(transform_prog, (void*)ap); - bb_perror_msg_and_die("exec failed"); + { + char *argv[4]; + xmove_fd(src_fd, 0); + xmove_fd(fd_pipe[1], 1); + argv[0] = (char*)transform_prog; + argv[1] = (char*)"-cf"; + argv[2] = (char*)"-"; + argv[3] = NULL; + BB_EXECVP(transform_prog, argv); + bb_perror_msg_and_die("exec failed"); + } #endif /* notreached */ } |