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| author | Denis Vlasenko | 2008-02-13 17:52:42 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2008-02-13 17:52:42 +0000 |
| commit | 23ffb6a4a2a01fe41abe4e42d46fa16bdc2603fd (patch) | |
| tree | 2627bf7cfc0d748ec007f0d6a2d23ad1ff985c59 /archival/libunarchive/get_header_tar.c | |
| parent | 6dd03f04ea3292d10ce06feda2f0c8272be0fb83 (diff) | |
| download | busybox-23ffb6a4a2a01fe41abe4e42d46fa16bdc2603fd.zip busybox-23ffb6a4a2a01fe41abe4e42d46fa16bdc2603fd.tar.gz | |
tar: compat: handle tarballs with only one zero block at the end
Diffstat (limited to 'archival/libunarchive/get_header_tar.c')
| -rw-r--r-- | archival/libunarchive/get_header_tar.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c index 274bd46..7493d91 100644 --- a/archival/libunarchive/get_header_tar.c +++ b/archival/libunarchive/get_header_tar.c @@ -90,7 +90,15 @@ char get_header_tar(archive_handle_t *archive_handle) again_after_align: - xread(archive_handle->src_fd, &tar, 512); + i = full_read(archive_handle->src_fd, &tar, 512); + /* if GNU tar sees EOF in above read, it says: + * "tar: A lone zero block at N", where N = kilobyte + * where EOF was met (not EOF block, actual EOF!), + * and tar will exit with error code 0! Mimic exit(0): */ + if (i == 0) + xfunc_error_retval = 0; + if (i != 512) + bb_error_msg_and_die("short read"); archive_handle->offset += 512; /* If there is no filename its an empty header */ |