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/* 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;
}
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