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| author | Denis Vlasenko | 2007-09-05 11:48:32 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2007-09-05 11:48:32 +0000 |
| commit | 211f7f88ae67e875bed50409b2edbb6d740fc648 (patch) | |
| tree | ae37652f75374919fff81e732fd2ab867e6a947a /archival/libunarchive/get_header_tar_gz.c | |
| parent | beffd43d8e393b68787a00d9c6078a2b367afd01 (diff) | |
| download | busybox-211f7f88ae67e875bed50409b2edbb6d740fc648.zip busybox-211f7f88ae67e875bed50409b2edbb6d740fc648.tar.gz | |
tar + gzip/bzip2/etc: support NOMMU machines (by Alex Landau <landau_alex@yahoo.com>)
Diffstat (limited to 'archival/libunarchive/get_header_tar_gz.c')
| -rw-r--r-- | archival/libunarchive/get_header_tar_gz.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/archival/libunarchive/get_header_tar_gz.c b/archival/libunarchive/get_header_tar_gz.c index 85070d9..a990614 100644 --- a/archival/libunarchive/get_header_tar_gz.c +++ b/archival/libunarchive/get_header_tar_gz.c @@ -8,19 +8,26 @@ char get_header_tar_gz(archive_handle_t *archive_handle) { +#if BB_MMU unsigned char magic[2]; +#endif /* Can't lseek over pipes */ archive_handle->seek = seek_by_read; + /* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case). + * Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will + * need the header. */ +#if BB_MMU xread(archive_handle->src_fd, &magic, 2); if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) { bb_error_msg_and_die("invalid gzip magic"); } check_header_gzip_or_die(archive_handle->src_fd); +#endif - archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream); + archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip", "gunzip", "-cf", "-", NULL); archive_handle->offset = 0; while (get_header_tar(archive_handle) == EXIT_SUCCESS) /**/; |