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-rw-r--r--main/busybox/0009-depmod-support-generating-kmod-binary-index-files.patch507
1 files changed, 0 insertions, 507 deletions
diff --git a/main/busybox/0009-depmod-support-generating-kmod-binary-index-files.patch b/main/busybox/0009-depmod-support-generating-kmod-binary-index-files.patch
deleted file mode 100644
index a0a56a006d9..00000000000
--- a/main/busybox/0009-depmod-support-generating-kmod-binary-index-files.patch
+++ /dev/null
@@ -1,507 +0,0 @@
-From 24f932672e826e8f93955d0c6dd6bca140f3fa98 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
-Date: Sun, 25 Oct 2015 22:21:41 +0200
-Subject: [PATCH] depmod: support generating kmod binary index files
-
-This allows to use busybox depmod, and run daemons using libkmod (or
-even kmod modprobe if needed).
-
-About +1500 bytes when enabled. This patch merges some depmod code
-paths, so when this is disabled it shrinks the code size a little bit.
----
- modutils/Config.src | 9 ++
- modutils/depmod.c | 281 ++++++++++++++++++++++++++++++++++++--------
- modutils/modprobe.c | 15 ---
- modutils/modutils.c | 31 +++++
- modutils/modutils.h | 16 +++
- 5 files changed, 286 insertions(+), 66 deletions(-)
-
-diff --git a/modutils/Config.src b/modutils/Config.src
-index 188296814..7a4c037ad 100644
---- a/modutils/Config.src
-+++ b/modutils/Config.src
-@@ -152,6 +152,15 @@ config FEATURE_MODUTILS_ALIAS
-
- Say Y if unsure.
-
-+config FEATURE_MODUTILS_BIN
-+ bool "Support for the kmod .bin file format"
-+ default n
-+ depends on DEPMOD && !MODPROBE_SMALL
-+ help
-+ Generate kmod compatible binary index files for .dep, .alias,
-+ .symbols and .builtin files. Allows mixing use of busybox
-+ modutils and kmod (binaries and library).
-+
- config FEATURE_MODUTILS_SYMBOLS
- bool "Support module.symbols file"
- default y
-diff --git a/modutils/depmod.c b/modutils/depmod.c
-index 004c67a11..05c1a9bce 100644
---- a/modutils/depmod.c
-+++ b/modutils/depmod.c
-@@ -2,7 +2,7 @@
- /*
- * depmod - generate modules.dep
- * Copyright (c) 2008 Bernhard Reutner-Fischer
-- * Copyrihgt (c) 2008 Timo Teras <timo.teras@iki.fi>
-+ * Copyrihgt (c) 2008-2015 Timo Teras <timo.teras@iki.fi>
- * Copyright (c) 2008 Vladimir Dronnikov
- *
- * Licensed under GPLv2 or later, see file LICENSE in this source tree.
-@@ -26,6 +26,24 @@
- #include "modutils.h"
- #include <sys/utsname.h> /* uname() */
-
-+#define INDEX_MINCHAR 32
-+#define INDEX_MAXCHAR 128
-+
-+typedef struct index_node {
-+ char *prefix;
-+ llist_t *values;
-+ struct index_node *children[INDEX_MAXCHAR-INDEX_MINCHAR];
-+} index_node;
-+
-+struct globals {
-+ module_db db;
-+ index_node *root_node;
-+} FIX_ALIASING;
-+#define G (*ptr_to_globals)
-+#define INIT_G() do { \
-+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
-+} while (0)
-+
- /*
- * Theory of operation:
- * - iterate over all modules and record their full path
-@@ -53,18 +71,12 @@ static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARA
-
- for (ptr = image; ptr < image + len - 10; ptr++) {
- if (is_prefixed_with(ptr, "depends=")) {
-- char *u;
--
- ptr += 8;
-- for (u = ptr; *u; u++)
-- if (*u == '-')
-- *u = '_';
-- ptr += string_to_llist(ptr, &e->deps, ",");
-+ string_to_llist(replace_underscores(ptr), &e->deps, ",");
- } else if (ENABLE_FEATURE_MODUTILS_ALIAS
- && is_prefixed_with(ptr, "alias=")
- ) {
-- llist_add_to(&e->aliases, xstrdup(ptr + 6));
-- ptr += strlen(ptr);
-+ llist_add_to(&e->aliases, replace_underscores(xstrdup(ptr + 6)));
- } else if (ENABLE_FEATURE_MODUTILS_SYMBOLS
- && is_prefixed_with(ptr, "__ksymtab_")
- ) {
-@@ -74,9 +86,10 @@ static int FAST_FUNC parse_module(const char *fname, struct stat *sb UNUSED_PARA
- ) {
- continue;
- }
-- llist_add_to(&e->symbols, xstrdup(ptr));
-- ptr += strlen(ptr);
-- }
-+ llist_add_to(&e->symbols, xasprintf("symbol:%s", ptr));
-+ } else
-+ continue;
-+ ptr += strlen(ptr);
- }
- free(image);
-
-@@ -108,12 +121,6 @@ static void order_dep_list(module_db *modules, module_entry *start, llist_t *add
- }
- }
-
--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"
-@@ -167,6 +174,169 @@ enum {
- OPT_C = (1 << 9), /* -C,--config etc_modules_conf: ignored */
- };
-
-+/* Support for the mod binary index generation */
-+
-+static void index_init(const char *filename)
-+{
-+ if (ENABLE_FEATURE_MODUTILS_BIN) {
-+ index_node *n;
-+
-+ n = xzalloc(sizeof(index_node));
-+ n->prefix = xstrdup("");
-+ G.root_node = n;
-+ }
-+
-+ if (filename && !(option_mask32 & OPT_n)) {
-+ if (freopen(filename, "w", stdout) == NULL)
-+ bb_perror_msg_and_die("can't open '%s'", filename);
-+ }
-+}
-+
-+static void index_add(const char *key, char *value, const char *prefix)
-+{
-+ if (prefix && *prefix)
-+ printf("%s%s %s\n", prefix, key, value);
-+ else if (prefix)
-+ printf("%s\n", value);
-+
-+ if (ENABLE_FEATURE_MODUTILS_BIN) {
-+ index_node *cur = G.root_node, *n;
-+ unsigned i = 0, j, ch;
-+
-+ while (1) {
-+ /* Ensure node->prefix is a prefix of &str[i].
-+ * If it is not already, then we must split node. */
-+ for (j = 0; cur->prefix[j]; j++) {
-+ ch = cur->prefix[j];
-+ if (ch != key[i+j]) {
-+ /* New child is copy of node with prefix[j+1..N] */
-+ n = xzalloc(sizeof(index_node));
-+ n->prefix = xstrdup(&cur->prefix[j+1]);
-+ n->values = cur->values;
-+ memcpy(n->children, cur->children, sizeof(n->children));
-+
-+ /* Parent has prefix[0..j], child at prefix[j] */
-+ cur->prefix[j] = '\0';
-+ cur->values = NULL;
-+ memset(cur->children, 0, sizeof(cur->children));
-+ cur->children[ch-INDEX_MINCHAR] = n;
-+ break;
-+ }
-+ }
-+ i += j;
-+
-+ ch = key[i];
-+ if (ch == 0)
-+ break;
-+
-+ if (ch < INDEX_MINCHAR || ch >= INDEX_MAXCHAR)
-+ bb_error_msg_and_die("bad module name");
-+
-+ ch -= INDEX_MINCHAR;
-+ if (!cur->children[ch]) {
-+ n = xzalloc(sizeof(index_node));
-+ cur->children[ch] = n;
-+ n->prefix = xstrdup(&key[i+1]);
-+ cur = n;
-+ break;
-+ }
-+
-+ /* Descend into child node and continue */
-+ cur = cur->children[ch];
-+ i++;
-+ }
-+
-+ llist_add_to(&cur->values, value);
-+ }
-+}
-+
-+static uint32_t index_write_node(FILE *out, index_node *n, void (*freeit)(void *data))
-+{
-+ uint32_t child_offs[INDEX_MAXCHAR-INDEX_MINCHAR];
-+ uint32_t offset;
-+ uint8_t first = 255, last = 0;
-+ unsigned i;
-+
-+ for (i = 0; i < INDEX_MAXCHAR-INDEX_MINCHAR; i++) {
-+ child_offs[i] = 0;
-+ if (!n->children[i])
-+ continue;
-+ child_offs[i] = index_write_node(out, n->children[i], freeit);
-+ if (first > INDEX_MAXCHAR)
-+ first = i;
-+ last = i;
-+ }
-+
-+ offset = ftell(out);
-+
-+ if (n->prefix[0]) {
-+ fputs(n->prefix, out);
-+ fputc('\0', out);
-+ offset |= INDEX_NODE_PREFIX;
-+ }
-+
-+ if (first < INDEX_MAXCHAR) {
-+ fputc(first + INDEX_MINCHAR, out);
-+ fputc(last + INDEX_MINCHAR, out);
-+ fwrite(child_offs + first, sizeof(uint32_t), last - first + 1, out);
-+ offset |= INDEX_NODE_CHILDS;
-+ }
-+
-+ if (n->values) {
-+ const llist_t *v;
-+ unsigned int cnt;
-+ uint32_t u;
-+
-+ n->values = llist_rev(n->values);
-+ for (v = n->values, cnt = 0; v != NULL; v = v->link, cnt++);
-+ u = htonl(cnt);
-+ fwrite(&u, sizeof(u), 1, out);
-+ for (v = n->values, cnt = 0; v != NULL; v = v->link, cnt++) {
-+ u = htonl(cnt);
-+ fwrite(&u, sizeof(u), 1, out);
-+ fputs(v->data, out);
-+ fputc('\0', out);
-+ }
-+ offset |= INDEX_NODE_VALUES;
-+ }
-+
-+ llist_free(n->values, freeit);
-+ free(n->prefix);
-+ free(n);
-+
-+ return htonl(offset);
-+}
-+
-+static void index_dump(const char *filename, int deps_file)
-+{
-+ if (ENABLE_FEATURE_MODUTILS_BIN) {
-+ FILE *out;
-+ uint32_t header[3] = {
-+ htonl(INDEX_MAGIC),
-+ htonl(INDEX_VERSION),
-+ };
-+
-+ if (option_mask32 & OPT_n)
-+ filename = "/dev/null";
-+ else
-+ filename = xasprintf("tmp.%s.bin", filename);
-+
-+ out = xfopen_for_write(filename);
-+ fwrite(header, sizeof(uint32_t), 3, out);
-+ header[2] = index_write_node(out, G.root_node, deps_file ? free : 0);
-+ rewind(out);
-+ G.root_node = NULL;
-+ fwrite(header, sizeof(uint32_t), 3, out);
-+ if (fclose(out)) {
-+ remove(filename);
-+ bb_error_msg_and_die(bb_msg_write_error);
-+ }
-+ /* .bin files are mmap'ed; not renaming it may crash
-+ * long standing daemon using libkmod */
-+ rename_or_warn(filename, filename + 4);
-+ }
-+}
-+
- int depmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
- int depmod_main(int argc UNUSED_PARAM, char **argv)
- {
-@@ -178,6 +348,8 @@ int depmod_main(int argc UNUSED_PARAM, char **argv)
- unsigned i;
- int tmp;
-
-+ INIT_G();
-+
- getopt32(argv, "aAb:eF:nruqC:", &moddir_base, NULL, NULL);
- argv += optind;
-
-@@ -210,53 +382,60 @@ int depmod_main(int argc UNUSED_PARAM, char **argv)
- }
-
- /* Generate dependency and alias files */
-- if (!(option_mask32 & OPT_n))
-- xfreopen_write(CONFIG_DEFAULT_DEPMOD_FILE, stdout);
--
-+ index_init(CONFIG_DEFAULT_DEPMOD_FILE);
- moddb_foreach_module(&modules, m, i) {
-- printf("%s:", m->name);
--
-+ char *buf = xasprintf("%s:", m->name);
- order_dep_list(&modules, m, m->deps);
-+
- while (m->dnext != m) {
- dep = m->dnext;
-- printf(" %s", dep->name);
--
-+ buf = gather_options_str(buf, dep->name);
- /* unlink current entry */
- dep->dnext->dprev = dep->dprev;
- dep->dprev->dnext = dep->dnext;
- dep->dnext = dep->dprev = dep;
- }
-- bb_putchar('\n');
-+ index_add(m->modname, buf, "");
- }
--
--#if ENABLE_FEATURE_MODUTILS_ALIAS
-- if (!(option_mask32 & OPT_n))
-- xfreopen_write("modules.alias", stdout);
-- moddb_foreach_module(&modules, m, i) {
-- while (m->aliases) {
-- /*
-- * Last word used to be a basename
-- * (filename with path and .ko.* stripped)
-- * at the time of module-init-tools 3.4.
-- * kmod v.12 uses module name, i.e., s/-/_/g.
-- */
-- printf("alias %s %s\n",
-- (char*)llist_pop(&m->aliases),
-- m->modname);
-+ index_dump(CONFIG_DEFAULT_DEPMOD_FILE, 1);
-+
-+ if (ENABLE_FEATURE_MODUTILS_ALIAS) {
-+ index_init("modules.alias");
-+ moddb_foreach_module(&modules, m, i) {
-+ while (m->aliases) {
-+ /*
-+ * Last word used to be a basename
-+ * (filename with path and .ko.* stripped)
-+ * at the time of module-init-tools 3.4.
-+ * kmod v.12 uses module name, i.e., s/-/_/g.
-+ */
-+ index_add((char*)llist_pop(&m->aliases), m->modname, "alias ");
-+ }
- }
-+ index_dump("modules.alias", 0);
- }
--#endif
--#if ENABLE_FEATURE_MODUTILS_SYMBOLS
-- if (!(option_mask32 & OPT_n))
-- xfreopen_write("modules.symbols", stdout);
-- moddb_foreach_module(&modules, m, i) {
-- while (m->symbols) {
-- printf("alias symbol:%s %s\n",
-- (char*)llist_pop(&m->symbols),
-- m->modname);
-+ if (ENABLE_FEATURE_MODUTILS_SYMBOLS) {
-+ index_init("modules.symbols");
-+ moddb_foreach_module(&modules, m, i) {
-+ while (m->symbols) {
-+ index_add((char*)llist_pop(&m->symbols), m->modname, "alias ");
-+ }
-+ }
-+ index_dump("modules.symbols", 0);
-+ }
-+ if (ENABLE_FEATURE_MODUTILS_BIN) {
-+ char line[PATH_MAX], modname[MODULE_NAME_LEN];
-+ FILE *in;
-+
-+ index_init(NULL);
-+ in = xfopen_for_read("modules.builtin");
-+ while (fgets(line, sizeof(line), in) != NULL) {
-+ filename2modname(line, modname);
-+ index_add(modname, (char *) "", 0);
- }
-+ fclose(in);
-+ index_dump("modules.builtin", 0);
- }
--#endif
-
- if (ENABLE_FEATURE_CLEAN_UP)
- moddb_free(&modules);
-diff --git a/modutils/modprobe.c b/modutils/modprobe.c
-index 59f6d54f3..0a398a60f 100644
---- a/modutils/modprobe.c
-+++ b/modutils/modprobe.c
-@@ -192,21 +192,6 @@ struct globals {
-
- static int read_config(const char *path);
-
--static char *gather_options_str(char *opts, const char *append)
--{
-- /* Speed-optimized. We call gather_options_str many times. */
-- if (append) {
-- if (opts == NULL) {
-- opts = xstrdup(append);
-- } else {
-- int optlen = strlen(opts);
-- opts = xrealloc(opts, optlen + strlen(append) + 2);
-- sprintf(opts + optlen, " %s", append);
-- }
-- }
-- return opts;
--}
--
- static struct module_entry *get_or_add_modentry(const char *module)
- {
- return moddb_get_or_create(&G.db, module);
-diff --git a/modutils/modutils.c b/modutils/modutils.c
-index 6f7cd9721..257089af4 100644
---- a/modutils/modutils.c
-+++ b/modutils/modutils.c
-@@ -66,6 +66,21 @@ void FAST_FUNC moddb_free(module_db *db)
- }
- }
-
-+char * FAST_FUNC gather_options_str(char *opts, const char *append)
-+{
-+ /* Speed-optimized. We call gather_options_str many times. */
-+ if (append) {
-+ if (opts == NULL) {
-+ opts = xstrdup(append);
-+ } else {
-+ int optlen = strlen(opts);
-+ opts = xrealloc(opts, optlen + strlen(append) + 2);
-+ sprintf(opts + optlen, " %s", append);
-+ }
-+ }
-+ return opts;
-+}
-+
- void FAST_FUNC replace(char *s, char what, char with)
- {
- while (*s) {
-@@ -75,6 +90,22 @@ void FAST_FUNC replace(char *s, char what, char with)
- }
- }
-
-+char* FAST_FUNC replace_underscores(char *s)
-+{
-+ int i;
-+ for (i = 0; s[i]; i++) {
-+ switch (s[i]) {
-+ case '-':
-+ s[i] = '_';
-+ break;
-+ case '[':
-+ i += strcspn(&s[i], "]");
-+ break;
-+ }
-+ }
-+ return s;
-+}
-+
- int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
- {
- char *tok;
-diff --git a/modutils/modutils.h b/modutils/modutils.h
-index 4a702e97c..73e816028 100644
---- a/modutils/modutils.h
-+++ b/modutils/modutils.h
-@@ -18,6 +18,20 @@ PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
- #define MODULE_NAME_LEN 256
- #define MODULE_HASH_SIZE 256
-
-+/* .bin index format definitions */
-+#define INDEX_MAGIC 0xB007F457
-+#define INDEX_VERSION_MAJOR 0x0002
-+#define INDEX_VERSION_MINOR 0x0001
-+#define INDEX_VERSION ((INDEX_VERSION_MAJOR<<16)|INDEX_VERSION_MINOR)
-+
-+enum node_offset {
-+ INDEX_NODE_FLAGS = 0xF0000000, /* Flags in high nibble */
-+ INDEX_NODE_PREFIX = 0x80000000,
-+ INDEX_NODE_VALUES = 0x40000000,
-+ INDEX_NODE_CHILDS = 0x20000000,
-+ INDEX_NODE_MASK = 0x0FFFFFFF, /* Offset value */
-+};
-+
- typedef struct module_entry {
- struct module_entry *next;
- char *name, *modname;
-@@ -47,7 +61,9 @@ module_entry *moddb_get(module_db *db, const char *s) FAST_FUNC;
- module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC;
- void moddb_free(module_db *db) FAST_FUNC;
-
-+char *gather_options_str(char *opts, const char *append) FAST_FUNC;
- void replace(char *s, char what, char with) FAST_FUNC;
-+char *replace_underscores(char *s) FAST_FUNC;
- int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC;
- char *filename2modname(const char *filename, char *modname) FAST_FUNC;
- #if ENABLE_FEATURE_CMDLINE_MODULE_OPTIONS
generated by cgit v1.2.3 (git 2.41.0) at 2024-04-24 06:41:17 +0000