[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/modutils/depmod.c b/ap/app/busybox/src/modutils/depmod.c
new file mode 100644
index 0000000..aa228ec
--- /dev/null
+++ b/ap/app/busybox/src/modutils/depmod.c
@@ -0,0 +1,284 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * depmod - generate modules.dep
+ * Copyright (c) 2008 Bernhard Reutner-Fischer
+ * Copyrihgt (c) 2008 Timo Teras <timo.teras@iki.fi>
+ * Copyright (c) 2008 Vladimir Dronnikov
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+//applet:IF_DEPMOD(APPLET(depmod, BB_DIR_SBIN, BB_SUID_DROP))
+
+#include "libbb.h"
+#include "modutils.h"
+#include <sys/utsname.h> /* uname() */
+
+/*
+ * Theory of operation:
+ * - iterate over all modules and record their full path
+ * - iterate over all modules looking for "depends=" entries
+ * for each depends, look through our list of full paths and emit if found
+ */
+
+typedef struct module_info {
+ struct module_info *next;
+ char *name, *modname;
+ llist_t *dependencies;
+ llist_t *aliases;
+ llist_t *symbols;
+ struct module_info *dnext, *dprev;
+} module_info;
+
+static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARAM,
+ void *data, int depth UNUSED_PARAM)
+{
+ char modname[MODULE_NAME_LEN];
+ module_info **first = (module_info **) data;
+ char *image, *ptr;
+ module_info *info;
+ /* Arbitrary. Was sb->st_size, but that breaks .gz etc */
+ size_t len = (64*1024*1024 - 4096);
+
+ if (strrstr(fname, ".ko") == NULL)
+ return TRUE;
+
+ image = xmalloc_open_zipped_read_close(fname, &len);
+ info = xzalloc(sizeof(*info));
+
+ info->next = *first;
+ *first = info;
+
+ info->dnext = info->dprev = info;
+ info->name = xstrdup(fname + 2); /* skip "./" */
+ info->modname = xstrdup(filename2modname(fname, modname));
+ for (ptr = image; ptr < image + len - 10; ptr++) {
+ if (strncmp(ptr, "depends=", 8) == 0) {
+ char *u;
+
+ ptr += 8;
+ for (u = ptr; *u; u++)
+ if (*u == '-')
+ *u = '_';
+ ptr += string_to_llist(ptr, &info->dependencies, ",");
+ } else if (ENABLE_FEATURE_MODUTILS_ALIAS
+ && strncmp(ptr, "alias=", 6) == 0
+ ) {
+ llist_add_to(&info->aliases, xstrdup(ptr + 6));
+ ptr += strlen(ptr);
+ } else if (ENABLE_FEATURE_MODUTILS_SYMBOLS
+ && strncmp(ptr, "__ksymtab_", 10) == 0
+ ) {
+ ptr += 10;
+ if (strncmp(ptr, "gpl", 3) == 0
+ || strcmp(ptr, "strings") == 0
+ ) {
+ continue;
+ }
+ llist_add_to(&info->symbols, xstrdup(ptr));
+ ptr += strlen(ptr);
+ }
+ }
+ free(image);
+
+ return TRUE;
+}
+
+static module_info *find_module(module_info *modules, const char *modname)
+{
+ module_info *m;
+
+ for (m = modules; m != NULL; m = m->next)
+ if (strcmp(m->modname, modname) == 0)
+ return m;
+ return NULL;
+}
+
+static void order_dep_list(module_info *modules, module_info *start,
+ llist_t *add)
+{
+ module_info *m;
+ llist_t *n;
+
+ for (n = add; n != NULL; n = n->link) {
+ m = find_module(modules, n->data);
+ if (m == NULL)
+ continue;
+
+ /* unlink current entry */
+ m->dnext->dprev = m->dprev;
+ m->dprev->dnext = m->dnext;
+
+ /* and add it to tail */
+ m->dnext = start;
+ m->dprev = start->dprev;
+ start->dprev->dnext = m;
+ start->dprev = m;
+
+ /* recurse */
+ order_dep_list(modules, start, m->dependencies);
+ }
+}
+
+static void xfreopen_write(const char *file, FILE *f)
+{
+ if (freopen(file, "w", f) == NULL)
+ bb_perror_msg_and_die("can't open '%s'", file);
+}
+
+//usage:#if !ENABLE_MODPROBE_SMALL
+//usage:#define depmod_trivial_usage "[-n] [-b BASE] [VERSION] [MODFILES]..."
+//usage:#define depmod_full_usage "\n\n"
+//usage: "Generate modules.dep, alias, and symbols files"
+//usage: "\n"
+//usage: "\n -b BASE Use BASE/lib/modules/VERSION"
+//usage: "\n -n Dry run: print files to stdout"
+//usage:#endif
+
+/* Upstream usage:
+ * [-aAenv] [-C FILE or DIR] [-b BASE] [-F System.map] [VERSION] [MODFILES]...
+ * -a --all
+ * Probe all modules. Default if no MODFILES.
+ * -A --quick
+ * Check modules.dep's mtime against module files' mtimes.
+ * -b --basedir BASE
+ * Use $BASE/lib/modules/VERSION
+ * -C --config FILE or DIR
+ * Path to /etc/depmod.conf or /etc/depmod.d/
+ * -e --errsyms
+ * When combined with the -F option, this reports any symbols
+ * which are not supplied by other modules or kernel.
+ * -F --filesyms System.map
+ * -n --dry-run
+ * Print modules.dep etc to standard output
+ * -v --verbose
+ * Print to stdout all the symbols each module depends on
+ * and the module's file name which provides that symbol.
+ * -r No-op
+ * -u No-op
+ * -q No-op
+ *
+ * So far we only support: [-n] [-b BASE] [VERSION] [MODFILES]...
+ * Accepted but ignored:
+ * -aAe
+ * -F System.map
+ * -C FILE/DIR
+ *
+ * Not accepted: -v
+ */
+enum {
+ //OPT_a = (1 << 0), /* All modules, ignore mods in argv */
+ //OPT_A = (1 << 1), /* Only emit .ko that are newer than modules.dep file */
+ OPT_b = (1 << 2), /* base directory when modules are in staging area */
+ //OPT_e = (1 << 3), /* with -F, print unresolved symbols */
+ //OPT_F = (1 << 4), /* System.map that contains the symbols */
+ OPT_n = (1 << 5), /* dry-run, print to stdout only */
+ OPT_r = (1 << 6), /* Compat dummy. Linux Makefile uses it */
+ OPT_u = (1 << 7), /* -u,--unresolved-error: ignored */
+ OPT_q = (1 << 8), /* -q,--quiet: ignored */
+ OPT_C = (1 << 9), /* -C,--config etc_modules_conf: ignored */
+};
+
+int depmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int depmod_main(int argc UNUSED_PARAM, char **argv)
+{
+ module_info *modules, *m, *dep;
+ const char *moddir_base = "/";
+ char *moddir, *version;
+ struct utsname uts;
+ int tmp;
+
+ getopt32(argv, "aAb:eF:nruqC:", &moddir_base, NULL, NULL);
+ argv += optind;
+
+ /* goto modules location */
+ xchdir(moddir_base);
+
+ /* If a version is provided, then that kernel version's module directory
+ * is used, rather than the current kernel version (as returned by
+ * "uname -r"). */
+ if (*argv && sscanf(*argv, "%u.%u.%u", &tmp, &tmp, &tmp) == 3) {
+ version = *argv++;
+ } else {
+ uname(&uts);
+ version = uts.release;
+ }
+ moddir = concat_path_file(&CONFIG_DEFAULT_MODULES_DIR[1], version);
+ xchdir(moddir);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(moddir);
+
+ /* Scan modules */
+ modules = NULL;
+ if (*argv) {
+ do {
+ parse_module(*argv, /*sb (unused):*/ NULL, &modules, 0);
+ } while (*++argv);
+ } else {
+ recursive_action(".", ACTION_RECURSE,
+ parse_module, NULL, &modules, 0);
+ }
+
+ /* Generate dependency and alias files */
+ if (!(option_mask32 & OPT_n))
+ xfreopen_write(CONFIG_DEFAULT_DEPMOD_FILE, stdout);
+ for (m = modules; m != NULL; m = m->next) {
+ printf("%s:", m->name);
+
+ order_dep_list(modules, m, m->dependencies);
+ while (m->dnext != m) {
+ dep = m->dnext;
+ printf(" %s", dep->name);
+
+ /* unlink current entry */
+ dep->dnext->dprev = dep->dprev;
+ dep->dprev->dnext = dep->dnext;
+ dep->dnext = dep->dprev = dep;
+ }
+ bb_putchar('\n');
+ }
+
+#if ENABLE_FEATURE_MODUTILS_ALIAS
+ if (!(option_mask32 & OPT_n))
+ xfreopen_write("modules.alias", stdout);
+ for (m = modules; m != NULL; m = m->next) {
+ const char *fname = bb_basename(m->name);
+ int fnlen = strchrnul(fname, '.') - fname;
+ while (m->aliases) {
+ /* Last word can well be m->modname instead,
+ * but depmod from module-init-tools 3.4
+ * uses module basename, i.e., no s/-/_/g.
+ * (pathname and .ko.* are still stripped)
+ * Mimicking that... */
+ printf("alias %s %.*s\n",
+ (char*)llist_pop(&m->aliases),
+ fnlen, fname);
+ }
+ }
+#endif
+#if ENABLE_FEATURE_MODUTILS_SYMBOLS
+ if (!(option_mask32 & OPT_n))
+ xfreopen_write("modules.symbols", stdout);
+ for (m = modules; m != NULL; m = m->next) {
+ const char *fname = bb_basename(m->name);
+ int fnlen = strchrnul(fname, '.') - fname;
+ while (m->symbols) {
+ printf("alias symbol:%s %.*s\n",
+ (char*)llist_pop(&m->symbols),
+ fnlen, fname);
+ }
+ }
+#endif
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ while (modules) {
+ module_info *old = modules;
+ modules = modules->next;
+ free(old->name);
+ free(old->modname);
+ free(old);
+ }
+ }
+
+ return EXIT_SUCCESS;
+}