1 /* vi: set sw=4 ts=4: */
2 /* This file was released into the public domain by Paul Fox.
4 //config:config BBCONFIG
5 //config: bool "bbconfig (9.7 kb)"
8 //config: The bbconfig applet will print the config file with which
9 //config: busybox was built.
11 //config:config FEATURE_COMPRESS_BBCONFIG
12 //config: bool "Compress bbconfig data"
14 //config: depends on BBCONFIG
16 //config: Store bbconfig data in compressed form, uncompress them on-the-fly
17 //config: before output.
19 //config: If you have a really tiny busybox with few applets enabled (and
20 //config: bunzip2 isn't one of them), the overhead of the decompressor might
21 //config: be noticeable. Also, if you run executables directly from ROM
22 //config: and have very little memory, this might not be a win. Otherwise,
23 //config: you probably want this.
25 //applet:IF_BBCONFIG(APPLET(bbconfig, BB_DIR_BIN, BB_SUID_DROP))
27 //kbuild:lib-$(CONFIG_BBCONFIG) += bbconfig.o
29 //usage:#define bbconfig_trivial_usage
31 //usage:#define bbconfig_full_usage "\n\n"
32 //usage: "Print the config file used by busybox build"
35 #include "bbconfigopts.h"
36 #if ENABLE_FEATURE_COMPRESS_BBCONFIG
37 # include "bb_archive.h"
38 # include "bbconfigopts_bz2.h"
41 int bbconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
42 int bbconfig_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
44 #if ENABLE_FEATURE_COMPRESS_BBCONFIG
46 int i = start_bunzip(&bd,
48 /* inbuf: */ bbconfig_config_bz2,
49 /* len: */ sizeof(bbconfig_config_bz2));
50 /* read_bunzip can longjmp to start_bunzip, and ultimately
51 * end up here with i != 0 on read data errors! Not trivial */
53 /* Cannot use xmalloc: will leak bd in NOFORK case! */
54 char *outbuf = malloc_or_warn(sizeof(bbconfig_config));
56 read_bunzip(bd, outbuf, sizeof(bbconfig_config));
57 full_write1_str(outbuf);
61 full_write1_str(bbconfig_config);