1 /* 2 * Common modutils related functions for busybox 3 * 4 * Copyright (C) 2008 by Timo Teras <timo.teras@iki.fi> 5 * 6 * Licensed under GPLv2 or later, see file LICENSE in this source tree. 7 */ 8 9 #ifndef MODUTILS_H 10 #define MODUTILS_H 1 11 12 #include "libbb.h" 13 14 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN 15 16 /* linux/include/linux/module.h has 64, but this is also used 17 * internally for the maximum alias name length, which can be quite long */ 18 #define MODULE_NAME_LEN 256 19 #define MODULE_HASH_SIZE 256 20 21 typedef struct module_entry { 22 struct module_entry *next; 23 char *name, *modname; 24 llist_t *deps; 25 IF_MODPROBE( 26 llist_t *realnames; 27 unsigned flags; 28 const char *probed_name; /* verbatim as seen on cmdline */ 29 char *options; /* options from config files */ 30 ) 31 IF_DEPMOD( 32 llist_t *aliases; 33 llist_t *symbols; 34 struct module_entry *dnext, *dprev; 35 ) 36 } module_entry; 37 38 typedef struct module_db { 39 module_entry *buckets[MODULE_HASH_SIZE]; 40 } module_db; 41 42 #define moddb_foreach_module(db, module, index) \ 43 for ((index) = 0; (index) < MODULE_HASH_SIZE; (index)++) \ 44 for (module = (db)->buckets[index]; module; module = module->next) 45 46 module_entry *moddb_get(module_db *db, const char *s) FAST_FUNC; 47 module_entry *moddb_get_or_create(module_db *db, const char *s) FAST_FUNC; 48 void moddb_free(module_db *db) FAST_FUNC; 49 50 void replace(char *s, char what, char with) FAST_FUNC; 51 char *replace_underscores(char *s) FAST_FUNC; 52 int string_to_llist(char *string, llist_t **llist, const char *delim) FAST_FUNC; 53 char *filename2modname(const char *filename, char *modname) FAST_FUNC; 54 char *parse_cmdline_module_options(char **argv, int quote_spaces) FAST_FUNC; 55 56 /* insmod for 2.4 and modprobe's options (insmod 2.6 has no options at all): */ 57 #define INSMOD_OPTS \ 58 "vqs" \ 59 IF_FEATURE_2_4_MODULES("Lfkx" IF_FEATURE_INSMOD_LOAD_MAP("m")) 60 #define INSMOD_ARGS /* (was meant to support -o NAME) , NULL */ 61 62 enum { 63 INSMOD_OPT_VERBOSE = (1 << 0), 64 INSMOD_OPT_SILENT = (1 << 1), 65 INSMOD_OPT_SYSLOG = (1 << 2), 66 //INSMOD_OPT_OUTPUTNAME = (1 << x) - not supported yet 67 INSMOD_OPT_LOCK = (1 << 3) * ENABLE_FEATURE_2_4_MODULES, 68 INSMOD_OPT_FORCE = (1 << 4) * ENABLE_FEATURE_2_4_MODULES, 69 INSMOD_OPT_KERNELD = (1 << 5) * ENABLE_FEATURE_2_4_MODULES, 70 INSMOD_OPT_NO_EXPORT = (1 << 6) * ENABLE_FEATURE_2_4_MODULES, 71 INSMOD_OPT_PRINT_MAP = (1 << 7) * ENABLE_FEATURE_INSMOD_LOAD_MAP, 72 INSMOD_OPT_UNUSED = 73 (INSMOD_OPT_PRINT_MAP ? INSMOD_OPT_PRINT_MAP 74 : INSMOD_OPT_NO_EXPORT ? INSMOD_OPT_NO_EXPORT 75 : INSMOD_OPT_SYSLOG 76 ) << 1 77 }; 78 79 #if ENABLE_FEATURE_INSMOD_TRY_MMAP 80 void* FAST_FUNC try_to_mmap_module(const char *filename, size_t *image_size_p); 81 #else 82 # define try_to_mmap_module(filename, image_size) NULL 83 #endif 84 85 /* Return: 86 * 0 on success, 87 * -errno on open/read error, 88 * errno on init_module() error 89 */ 90 int FAST_FUNC bb_init_module(const char *module, const char *options); 91 /* Return: 92 * 0 on success, 93 * errno on init_module() error 94 */ 95 int FAST_FUNC bb_delete_module(const char *module, unsigned int flags); 96 /* Translates error return to a string */ 97 const char *moderror(int err) FAST_FUNC; 98 99 #if ENABLE_FEATURE_2_4_MODULES 100 int FAST_FUNC bb_init_module_24(const char *module, const char *options); 101 #endif 102 103 POP_SAVED_FUNCTION_VISIBILITY 104 105 #endif 106