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| author | Ron Yorston | 2018-11-02 14:14:31 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2018-11-02 14:14:51 +0100 |
| commit | c339c7f7b393fbcd51b0f96df837baa1edad7fd8 (patch) | |
| tree | 3fa49732a3426e0666ba732da7e4182db7dc66ca /miscutils | |
| parent | 0df289f427da6279e3ca198d14e90015c079af44 (diff) | |
| download | busybox-c339c7f7b393fbcd51b0f96df837baa1edad7fd8.zip busybox-c339c7f7b393fbcd51b0f96df837baa1edad7fd8.tar.gz | |
libarchive: add a function to unpack embedded data
Similar code to unpack embedded data is used to decompress usage
messages, embedded scripts and the config file (in the non-default
bbconfig applet).
Moving this code to a common function reduces the size of the default
build and hides more of the internals of libarchive.
function old new delta
unpack_bz2_data - 135 +135
bb_show_usage 137 157 +20
get_script_content 32 47 +15
unpack_scripts 119 - -119
unpack_usage_messages 124 - -124
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/0 up/down: 170/-243) Total: -73 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/bbconfig.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/miscutils/bbconfig.c b/miscutils/bbconfig.c index 5013495..fe02516 100644 --- a/miscutils/bbconfig.c +++ b/miscutils/bbconfig.c @@ -43,29 +43,10 @@ int bbconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int bbconfig_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) { #if ENABLE_FEATURE_COMPRESS_BBCONFIG - bunzip_data *bd; - int i; - jmp_buf jmpbuf; - - /* Setup for I/O error handling via longjmp */ - i = setjmp(jmpbuf); - if (i == 0) { - i = start_bunzip(&jmpbuf, - &bd, - /* src_fd: */ -1, - /* inbuf: */ bbconfig_config_bz2, - /* len: */ sizeof(bbconfig_config_bz2) - ); - } - /* read_bunzip can longjmp and end up here with i != 0 - * on read data errors! Not trivial */ - if (i == 0) { - /* Cannot use xmalloc: will leak bd in NOFORK case! */ - char *outbuf = malloc_or_warn(sizeof(bbconfig_config)); - if (outbuf) { - read_bunzip(bd, outbuf, sizeof(bbconfig_config)); - full_write1_str(outbuf); - } + const char *outbuf = unpack_bz2_data(bbconfig_config_bz2, + sizeof(bbconfig_config_bz2), sizeof(bbconfig_config)); + if (outbuf) { + full_write1_str(outbuf); } #else full_write1_str(bbconfig_config); |