blob: 2cbd1448a0c38570416f31de8ff6acbc46c2b37d
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 |