diff options
Diffstat (limited to 'applets')
| -rw-r--r-- | applets/Kbuild | 18 | ||||
| -rw-r--r-- | applets/applet_tables.c | 55 |
2 files changed, 47 insertions, 26 deletions
diff --git a/applets/Kbuild b/applets/Kbuild index b9dba03e1..ef4b76fed 100644 --- a/applets/Kbuild +++ b/applets/Kbuild @@ -14,20 +14,20 @@ always:= $(hostprogs-y) # Generated files need additional love -quiet_cmd_gen_usage_compressed = GEN include/usage_compressed.h - cmd_gen_usage_compressed = $(srctree)/applets/usage_compressed include/usage_compressed.h applets - HOSTCFLAGS_usage.o = -I$(srctree)/include -applets/applets.o: include/usage_compressed.h include/applet_tables.h +applets/applets.o: include/usage_compressed.h include/applet_tables.h -applets/usage: .config $(srctree)/applets/usage_compressed +applets/usage: .config $(srctree)/applets/usage_compressed + +quiet_cmd_gen_usage_compressed = GEN include/usage_compressed.h + cmd_gen_usage_compressed = $(srctree)/applets/usage_compressed include/usage_compressed.h applets include/usage_compressed.h: applets/usage $(srctree)/applets/usage_compressed $(call cmd,gen_usage_compressed) -# Two-stage file creation, to avoid having target file still created -# in case applet_tables fails +quiet_cmd_gen_applet_tables = GEN include/applet_tables.h + cmd_gen_applet_tables = applets/applet_tables include/applet_tables.h + include/applet_tables.h: applets/applet_tables - applets/applet_tables >include/applet_tables.h.tmp - mv include/applet_tables.h.tmp include/applet_tables.h + $(call cmd,gen_applet_tables) diff --git a/applets/applet_tables.c b/applets/applet_tables.c index b5df74076..9f42ebf31 100644 --- a/applets/applet_tables.c +++ b/applets/applet_tables.c @@ -50,45 +50,66 @@ int main(int argc, char **argv) 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; + } + /* We reuse 4 high-order bits of offset array for other purposes, + * so if they are indeed needed, refuse to proceed */ + if (ofs > 0xfff) + return 1; + if (!argv[1]) + return 1; + + i = open(argv[1], O_WRONLY | O_TRUNC | O_CREAT, 0666); + if (i < 0) + return 1; + dup2(i, 1); + + /* Keep in sync with include/busybox.h! */ + + puts("/* This is a generated file, don't edit */"); + + puts("const char applet_names[] ALIGN1 ="); + for (i = 0; i < NUM_APPLETS; i++) { printf("\"%s\" \"\\0\"\n", applets[i].name); } puts(";"); - puts("int (*const applet_mains[])(int argc, char **argv) = {"); + puts("int (*const applet_main[])(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", + printf("0x%04x,\n", offset[i] +#if ENABLE_FEATURE_PREFER_APPLETS + + (applets[i].nofork << 12) + + (applets[i].noexec << 13) +#endif #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("};"); +#if ENABLE_FEATURE_INSTALLER + puts("const uint8_t applet_install_loc[] ALIGN1 = {"); + i = 0; + while (i < NUM_APPLETS) { + int v = applets[i].install_loc; /* 3 bits */ + if (++i < NUM_APPLETS) + v |= applets[i].install_loc << 4; /* 3 bits */ + printf("0x%02x,\n", v); + i++; + } + puts("};"); +#endif + return 0; } |