diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-28 09:49:42 +0300 |
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committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-28 09:49:42 +0300 |
commit | 41f5add965163607b5921aa224b9ba6fa3debc05 (patch) | |
tree | fa331894c63fab174e915ab41ad85a6b78eae462 /applets | |
parent | 1aa7e477b1b727db77cac2d717f0fcca40587f78 (diff) |
forgotten part of previous commit
Diffstat (limited to 'applets')
-rw-r--r-- | applets/applet_tables.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/applets/applet_tables.c b/applets/applet_tables.c new file mode 100644 index 000000000..b5df74076 --- /dev/null +++ b/applets/applet_tables.c @@ -0,0 +1,94 @@ +/* vi: set sw=4 ts=4: */ +/* + * Applet table generator. + * Runs on host and produces include/applet_tables.h + * + * Copyright (C) 2007 Denys Vlasenko <vda.linux@googlemail.com> + * + * Licensed under GPLv2, see file License in this tarball for details. + */ + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> + +#include "../include/autoconf.h" +#include "../include/busybox.h" + +struct bb_applet { + const char *name; + const char *main; + enum bb_install_loc_t install_loc; + enum bb_suid_t need_suid; + /* true if instead of fork(); exec("applet"); waitpid(); + * one can do fork(); exit(applet_main(argc,argv)); waitpid(); */ + unsigned char noexec; + /* Even nicer */ + /* true if instead of fork(); exec("applet"); waitpid(); + * one can simply call applet_main(argc,argv); */ + unsigned char nofork; +}; + +/* Define struct bb_applet applets[] */ +#include "../include/applets.h" + +enum { NUM_APPLETS = sizeof(applets)/sizeof(applets[0]) }; + +static int offset[NUM_APPLETS]; + +static int cmp_name(const void *a, const void *b) +{ + const struct bb_applet *aa = a; + const struct bb_applet *bb = b; + return strcmp(aa->name, bb->name); +} + +int main(int argc, char **argv) +{ + int i; + int ofs; + + qsort(applets, NUM_APPLETS, sizeof(applets[0]), cmp_name); + + /* Keep in sync with include/busybox.h! */ + + puts("const char applet_names[] ALIGN1 ="); + ofs = 0; + i = 0; + for (i = 0; i < NUM_APPLETS; i++) { + offset[i] = ofs; + ofs += strlen(applets[i].name) + 1; + printf("\"%s\" \"\\0\"\n", applets[i].name); + } + puts(";"); + + puts("int (*const applet_mains[])(int argc, char **argv) = {"); + for (i = 0; i < NUM_APPLETS; i++) { + printf("%s_main,\n", applets[i].main); + } + puts("};"); + +#if ENABLE_FEATURE_INSTALLER || ENABLE_FEATURE_PREFER_APPLETS + puts("const uint32_t applet_nameofs[] = {"); +#else + puts("const uint16_t applet_nameofs[] ALIGN2 = {"); +#endif + for (i = 0; i < NUM_APPLETS; i++) { + printf("0x%08x,\n", + offset[i] +#if ENABLE_FEATURE_SUID + + (applets[i].need_suid << 14) /* 2 bits */ +#endif +#if ENABLE_FEATURE_INSTALLER + + (applets[i].install_loc << 16) /* 3 bits */ +#endif +#if ENABLE_FEATURE_PREFER_APPLETS + + (applets[i].nofork << 19) + + (applets[i].noexec << 20) +#endif + ); + } + puts("};"); + + return 0; +} |