From ebfa9b5aa1f1f6cd4949e1be03ebf1ce074727d1 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Tue, 19 Nov 2013 14:44:04 +0100 Subject: tar: fix exitcode check for MMU-spawned unpacking helpers Testcase: tar xvzf EMPTY_FILE function old new delta open_transformer 102 106 +4 get_header_tar 1781 1785 +4 Signed-off-by: Denys Vlasenko --- archival/libarchive/get_header_tar.c | 14 +++++++------- archival/libarchive/open_transformer.c | 5 +++-- 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/archival/libarchive/get_header_tar.c b/archival/libarchive/get_header_tar.c index bc09756ba..32f842095 100644 --- a/archival/libarchive/get_header_tar.c +++ b/archival/libarchive/get_header_tar.c @@ -198,13 +198,13 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) * the message and we don't check whether we indeed * saw zero block directly before this. */ if (i == 0) { - xfunc_error_retval = 0; - short_read: - bb_error_msg_and_die("short read"); + bb_error_msg("short read"); + /* this merely signals end of archive, not exit(1): */ + return EXIT_FAILURE; } if (i != 512) { IF_FEATURE_TAR_AUTODETECT(goto autodetect;) - goto short_read; + bb_error_msg_and_die("short read"); } #else @@ -221,10 +221,10 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) */ while (full_read(archive_handle->src_fd, &tar, 512) == 512) continue; - return EXIT_FAILURE; + return EXIT_FAILURE; /* "end of archive" */ } archive_handle->tar__end = 1; - return EXIT_SUCCESS; + return EXIT_SUCCESS; /* "decoded one header" */ } archive_handle->tar__end = 0; @@ -471,5 +471,5 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) free(file_header->tar__uname); free(file_header->tar__gname); #endif - return EXIT_SUCCESS; + return EXIT_SUCCESS; /* "decoded one header" */ } diff --git a/archival/libarchive/open_transformer.c b/archival/libarchive/open_transformer.c index 4e44a87e9..4e9826441 100644 --- a/archival/libarchive/open_transformer.c +++ b/archival/libarchive/open_transformer.c @@ -79,16 +79,17 @@ void FAST_FUNC open_transformer(int fd, const char *transform_prog) // FIXME: error check? #if BB_MMU { + IF_DESKTOP(long long) int r; transformer_aux_data_t aux; init_transformer_aux_data(&aux); aux.check_signature = check_signature; - transformer(&aux, fd, fd_pipe.wr); + r = transformer(&aux, fd, fd_pipe.wr); if (ENABLE_FEATURE_CLEAN_UP) { close(fd_pipe.wr); /* send EOF */ close(fd); } /* must be _exit! bug was actually seen here */ - _exit(EXIT_SUCCESS); + _exit(/*error if:*/ r < 0); } #else { -- cgit v1.2.3