forgotten part of previous commit

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;
+}