48dc80bbba
This merges the in-memory module info structures of modprobe and depmod. This allows sharing hashing by modulename code improving depmod runtime with almost factor of 2x. function old new delta get_or_add_modentry - 17 +17 do_modprobe 590 601 +11 moddb_get_or_create - 10 +10 load_modules_dep 195 205 +10 moddb_get - 7 +7 add_probe 81 78 -3 modprobe_main 721 714 -7 depmod_main 553 543 -10 config_file_action 434 421 -13 helper_get_module 160 144 -16 parse_module 343 320 -23 order_dep_list 105 82 -23 ------------------------------------------------------------------------------ (add/remove: 3/0 grow/shrink: 2/7 up/down: 55/-95) Total: -40 bytes Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/*
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* Common modutils related functions for busybox
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*
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* Copyright (C) 2008 by Timo Teras <timo.teras@iki.fi>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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#ifndef MODUTILS_H
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#define MODUTILS_H 1
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#include "libbb.h"
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PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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/* linux/include/linux/module.h has 64, but this is also used
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* internally for the maximum alias name length, which can be quite long */
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#define MODULE_NAME_LEN 256
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#define MODULE_HASH_SIZE 256
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typedef struct module_entry {
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struct module_entry *next;
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char *name, *modname;
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llist_t *deps;
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IF_MODPROBE(
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llist_t *realnames;
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unsigned flags;
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const char *probed_name; /* verbatim as seen on cmdline */
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char *options; /* options from config files */
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)
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IF_DEPMOD(
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llist_t *aliases;
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llist_t *symbols;
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struct module_entry *dnext, *dprev;
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)
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} module_entry;
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typedef struct module_db {
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module_entry *buckets[MODULE_HASH_SIZE];
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} module_db;
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#define moddb_foreach_module(db, module, index) \
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for ((index) = 0; (index) < MODULE_HASH_SIZE; (index)++) \
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for (module = (db)->buckets[index]; module; module = module->next)
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module_entry *moddb_get(module_db *db, const char *s) FAST_FUNC;
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module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC;
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void moddb_free(module_db *db) FAST_FUNC;
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void replace(char *s, char what, char with) FAST_FUNC;
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char *replace_underscores(char *s) FAST_FUNC;
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int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC;
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char *filename2modname(const char *filename, char *modname) FAST_FUNC;
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char *parse_cmdline_module_options(char **argv, int quote_spaces) FAST_FUNC;
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/* insmod for 2.4 and modprobe's options (insmod 2.6 has no options at all): */
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#define INSMOD_OPTS \
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"vqs" \
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IF_FEATURE_2_4_MODULES("Lfkx" IF_FEATURE_INSMOD_LOAD_MAP("m"))
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#define INSMOD_ARGS /* (was meant to support -o NAME) , NULL */
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enum {
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INSMOD_OPT_VERBOSE = (1 << 0),
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INSMOD_OPT_SILENT = (1 << 1),
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INSMOD_OPT_SYSLOG = (1 << 2),
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//INSMOD_OPT_OUTPUTNAME = (1 << x) - not supported yet
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INSMOD_OPT_LOCK = (1 << 3) * ENABLE_FEATURE_2_4_MODULES,
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INSMOD_OPT_FORCE = (1 << 4) * ENABLE_FEATURE_2_4_MODULES,
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INSMOD_OPT_KERNELD = (1 << 5) * ENABLE_FEATURE_2_4_MODULES,
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INSMOD_OPT_NO_EXPORT = (1 << 6) * ENABLE_FEATURE_2_4_MODULES,
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INSMOD_OPT_PRINT_MAP = (1 << 7) * ENABLE_FEATURE_INSMOD_LOAD_MAP,
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INSMOD_OPT_UNUSED =
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(INSMOD_OPT_PRINT_MAP ? INSMOD_OPT_PRINT_MAP
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: INSMOD_OPT_NO_EXPORT ? INSMOD_OPT_NO_EXPORT
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: INSMOD_OPT_SYSLOG
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) << 1
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};
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#if ENABLE_FEATURE_INSMOD_TRY_MMAP
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void* FAST_FUNC try_to_mmap_module(const char *filename, size_t *image_size_p);
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#else
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# define try_to_mmap_module(filename, image_size) NULL
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#endif
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/* Return:
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* 0 on success,
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* -errno on open/read error,
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* errno on init_module() error
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*/
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int FAST_FUNC bb_init_module(const char *module, const char *options);
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/* Return:
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* 0 on success,
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* errno on init_module() error
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*/
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int FAST_FUNC bb_delete_module(const char *module, unsigned int flags);
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/* Translates error return to a string */
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const char *moderror(int err) FAST_FUNC;
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#if ENABLE_FEATURE_2_4_MODULES
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int FAST_FUNC bb_init_module_24(const char *module, const char *options);
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#endif
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POP_SAVED_FUNCTION_VISIBILITY
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#endif
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