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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-11-28 06:49:42 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-11-28 06:49:42 +0000
commit41f5add965163607b5921aa224b9ba6fa3debc05 (patch)
treefa331894c63fab174e915ab41ad85a6b78eae462 /applets
parent1aa7e477b1b727db77cac2d717f0fcca40587f78 (diff)
downloadbusybox-41f5add965163607b5921aa224b9ba6fa3debc05.tar.gz
busybox-41f5add965163607b5921aa224b9ba6fa3debc05.tar.bz2
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Diffstat (limited to 'applets')
-rw-r--r--applets/applet_tables.c94
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;
+}