diff options
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/Config.src | 14 | ||||
| -rw-r--r-- | miscutils/bbconfig.c | 22 |
2 files changed, 36 insertions, 0 deletions
diff --git a/miscutils/Config.src b/miscutils/Config.src index cadaabb65..151f61bcc 100644 --- a/miscutils/Config.src +++ b/miscutils/Config.src @@ -22,6 +22,20 @@ config BBCONFIG The bbconfig applet will print the config file with which busybox was built. +config FEATURE_COMPRESS_BBCONFIG + bool "Compress bbconfig data" + default y + depends on BBCONFIG + help + Store bbconfig data in compressed form, uncompress them on-the-fly + before output. + + If you have a really tiny busybox with few applets enabled (and + bunzip2 isn't one of them), the overhead of the decompressor might + be noticeable. Also, if you run executables directly from ROM + and have very little memory, this might not be a win. Otherwise, + you probably want this. + config BEEP bool "beep" default y diff --git a/miscutils/bbconfig.c b/miscutils/bbconfig.c index 0d649b4e5..286077168 100644 --- a/miscutils/bbconfig.c +++ b/miscutils/bbconfig.c @@ -3,10 +3,32 @@ */ #include "libbb.h" #include "bbconfigopts.h" +#if ENABLE_FEATURE_COMPRESS_BBCONFIG +# include "unarchive.h" +# include "bbconfigopts_bz2.h" +#endif 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 = start_bunzip(&bd, + /* src_fd: */ -1, + /* inbuf: */ (void *)bbconfig_config_bz2, + /* len: */ sizeof(bbconfig_config_bz2)); + /* read_bunzip can longjmp to start_bunzip, and ultimately + * end up here with i != 0 on read data errors! Not trivial */ + if (!i) { + /* 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); + } + } +#else full_write1_str(bbconfig_config); +#endif return 0; } |