[2725] | 1 | /*
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| 2 | * Common modutils related functions for busybox
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| 3 | *
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| 4 | * Copyright (C) 2008 by Timo Teras <timo.teras@iki.fi>
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| 5 | *
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| 6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 7 | */
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| 8 |
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| 9 | #ifndef MODUTILS_H
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| 10 | #define MODUTILS_H 1
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| 11 |
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| 12 | #include "libbb.h"
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| 13 |
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| 14 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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| 15 |
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| 16 | /* linux/include/linux/module.h has 64, but this is also used
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| 17 | * internally for the maximum alias name length, which can be quite long */
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| 18 | #define MODULE_NAME_LEN 256
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[3621] | 19 | #define MODULE_HASH_SIZE 256
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[2725] | 20 |
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[3621] | 21 | typedef struct module_entry {
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| 22 | struct module_entry *next;
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| 23 | char *name, *modname;
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| 24 | llist_t *deps;
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| 25 | IF_MODPROBE(
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| 26 | llist_t *realnames;
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| 27 | unsigned flags;
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| 28 | const char *probed_name; /* verbatim as seen on cmdline */
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| 29 | char *options; /* options from config files */
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| 30 | )
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| 31 | IF_DEPMOD(
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| 32 | llist_t *aliases;
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| 33 | llist_t *symbols;
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| 34 | struct module_entry *dnext, *dprev;
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| 35 | )
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| 36 | } module_entry;
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| 37 |
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| 38 | typedef struct module_db {
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| 39 | module_entry *buckets[MODULE_HASH_SIZE];
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| 40 | } module_db;
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| 41 |
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| 42 | #define moddb_foreach_module(db, module, index) \
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| 43 | for ((index) = 0; (index) < MODULE_HASH_SIZE; (index)++) \
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| 44 | for (module = (db)->buckets[index]; module; module = module->next)
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| 45 |
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| 46 | module_entry *moddb_get(module_db *db, const char *s) FAST_FUNC;
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| 47 | module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC;
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| 48 | void moddb_free(module_db *db) FAST_FUNC;
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| 49 |
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[2725] | 50 | void replace(char *s, char what, char with) FAST_FUNC;
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| 51 | char *replace_underscores(char *s) FAST_FUNC;
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| 52 | int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC;
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| 53 | char *filename2modname(const char *filename, char *modname) FAST_FUNC;
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[3232] | 54 | char *parse_cmdline_module_options(char **argv, int quote_spaces) FAST_FUNC;
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[2725] | 55 |
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| 56 | /* insmod for 2.4 and modprobe's options (insmod 2.6 has no options at all): */
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| 57 | #define INSMOD_OPTS \
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| 58 | "vqs" \
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| 59 | IF_FEATURE_2_4_MODULES("Lfkx" IF_FEATURE_INSMOD_LOAD_MAP("m"))
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| 60 | #define INSMOD_ARGS /* (was meant to support -o NAME) , NULL */
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| 61 |
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| 62 | enum {
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| 63 | INSMOD_OPT_VERBOSE = (1 << 0),
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| 64 | INSMOD_OPT_SILENT = (1 << 1),
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| 65 | INSMOD_OPT_SYSLOG = (1 << 2),
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| 66 | //INSMOD_OPT_OUTPUTNAME = (1 << x) - not supported yet
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| 67 | INSMOD_OPT_LOCK = (1 << 3) * ENABLE_FEATURE_2_4_MODULES,
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| 68 | INSMOD_OPT_FORCE = (1 << 4) * ENABLE_FEATURE_2_4_MODULES,
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| 69 | INSMOD_OPT_KERNELD = (1 << 5) * ENABLE_FEATURE_2_4_MODULES,
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| 70 | INSMOD_OPT_NO_EXPORT = (1 << 6) * ENABLE_FEATURE_2_4_MODULES,
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| 71 | INSMOD_OPT_PRINT_MAP = (1 << 7) * ENABLE_FEATURE_INSMOD_LOAD_MAP,
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| 72 | INSMOD_OPT_UNUSED =
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| 73 | (INSMOD_OPT_PRINT_MAP ? INSMOD_OPT_PRINT_MAP
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| 74 | : INSMOD_OPT_NO_EXPORT ? INSMOD_OPT_NO_EXPORT
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| 75 | : INSMOD_OPT_SYSLOG
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| 76 | ) << 1
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| 77 | };
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| 78 |
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| 79 | #if ENABLE_FEATURE_INSMOD_TRY_MMAP
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| 80 | void* FAST_FUNC try_to_mmap_module(const char *filename, size_t *image_size_p);
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| 81 | #else
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| 82 | # define try_to_mmap_module(filename, image_size) NULL
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| 83 | #endif
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| 84 |
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| 85 | /* Return:
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| 86 | * 0 on success,
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| 87 | * -errno on open/read error,
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| 88 | * errno on init_module() error
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| 89 | */
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| 90 | int FAST_FUNC bb_init_module(const char *module, const char *options);
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| 91 | /* Return:
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| 92 | * 0 on success,
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| 93 | * errno on init_module() error
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| 94 | */
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| 95 | int FAST_FUNC bb_delete_module(const char *module, unsigned int flags);
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| 96 | /* Translates error return to a string */
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| 97 | const char *moderror(int err) FAST_FUNC;
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| 98 |
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| 99 | #if ENABLE_FEATURE_2_4_MODULES
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| 100 | int FAST_FUNC bb_init_module_24(const char *module, const char *options);
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| 101 | #endif
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| 102 |
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| 103 | POP_SAVED_FUNCTION_VISIBILITY
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| 104 |
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| 105 | #endif
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