2 * libkmod - interface to kernel module operations
4 * Copyright (C) 2011-2012 ProFUSION embedded systems
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
36 * library user context - reads the config and system
37 * environment, user variables, allows custom logging
40 struct kmod_ctx
*kmod_new(const char *dirname
, const char * const *config_paths
);
41 struct kmod_ctx
*kmod_ref(struct kmod_ctx
*ctx
);
42 struct kmod_ctx
*kmod_unref(struct kmod_ctx
*ctx
);
43 void kmod_set_log_fn(struct kmod_ctx
*ctx
,
44 void (*log_fn
)(void *log_data
,
45 int priority
, const char *file
, int line
,
46 const char *fn
, const char *format
,
49 int kmod_get_log_priority(const struct kmod_ctx
*ctx
);
50 void kmod_set_log_priority(struct kmod_ctx
*ctx
, int priority
);
51 void *kmod_get_userdata(const struct kmod_ctx
*ctx
);
52 void kmod_set_userdata(struct kmod_ctx
*ctx
, const void *userdata
);
56 * Management of libkmod's resources
58 int kmod_load_resources(struct kmod_ctx
*ctx
);
59 void kmod_unload_resources(struct kmod_ctx
*ctx
);
62 KMOD_RESOURCES_OK
= 0,
63 KMOD_RESOURCES_MUST_RELOAD
= 1,
64 KMOD_RESOURCES_MUST_RECREATE
= 2,
66 int kmod_validate_resources(struct kmod_ctx
*ctx
);
69 KMOD_INDEX_MODULES_DEP
= 0,
70 KMOD_INDEX_MODULES_ALIAS
,
71 KMOD_INDEX_MODULES_SYMBOL
,
72 KMOD_INDEX_MODULES_BUILTIN
,
73 /* Padding to make sure enum is not mapped to char */
74 _KMOD_INDEX_PAD
= (1 << 31),
76 int kmod_dump_index(struct kmod_ctx
*ctx
, enum kmod_index type
, int fd
);
81 * access to kmod generated lists
84 struct kmod_list
*kmod_list_next(const struct kmod_list
*list
,
85 const struct kmod_list
*curr
);
86 struct kmod_list
*kmod_list_prev(const struct kmod_list
*list
,
87 const struct kmod_list
*curr
);
88 struct kmod_list
*kmod_list_last(const struct kmod_list
*list
);
90 #define kmod_list_foreach(list_entry, first_entry) \
91 for (list_entry = first_entry; \
93 list_entry = kmod_list_next(first_entry, list_entry))
95 #define kmod_list_foreach_reverse(list_entry, first_entry) \
96 for (list_entry = kmod_list_last(first_entry); \
98 list_entry = kmod_list_prev(first_entry, list_entry))
103 * access to configuration lists - it allows to get each configuration's
104 * key/value stored by kmod
106 struct kmod_config_iter
;
107 struct kmod_config_iter
*kmod_config_get_blacklists(const struct kmod_ctx
*ctx
);
108 struct kmod_config_iter
*kmod_config_get_install_commands(const struct kmod_ctx
*ctx
);
109 struct kmod_config_iter
*kmod_config_get_remove_commands(const struct kmod_ctx
*ctx
);
110 struct kmod_config_iter
*kmod_config_get_aliases(const struct kmod_ctx
*ctx
);
111 struct kmod_config_iter
*kmod_config_get_options(const struct kmod_ctx
*ctx
);
112 struct kmod_config_iter
*kmod_config_get_softdeps(const struct kmod_ctx
*ctx
);
113 const char *kmod_config_iter_get_key(const struct kmod_config_iter
*iter
);
114 const char *kmod_config_iter_get_value(const struct kmod_config_iter
*iter
);
115 bool kmod_config_iter_next(struct kmod_config_iter
*iter
);
116 void kmod_config_iter_free_iter(struct kmod_config_iter
*iter
);
121 * Operate on kernel modules
124 int kmod_module_new_from_name(struct kmod_ctx
*ctx
, const char *name
,
125 struct kmod_module
**mod
);
126 int kmod_module_new_from_path(struct kmod_ctx
*ctx
, const char *path
,
127 struct kmod_module
**mod
);
128 int kmod_module_new_from_lookup(struct kmod_ctx
*ctx
, const char *given_alias
,
129 struct kmod_list
**list
);
130 int kmod_module_new_from_loaded(struct kmod_ctx
*ctx
,
131 struct kmod_list
**list
);
133 struct kmod_module
*kmod_module_ref(struct kmod_module
*mod
);
134 struct kmod_module
*kmod_module_unref(struct kmod_module
*mod
);
135 int kmod_module_unref_list(struct kmod_list
*list
);
136 struct kmod_module
*kmod_module_get_module(const struct kmod_list
*entry
);
141 KMOD_REMOVE_FORCE
= O_TRUNC
,
142 KMOD_REMOVE_NOWAIT
= O_NONBLOCK
,
145 /* Insertion flags */
147 KMOD_INSERT_FORCE_VERMAGIC
= 0x1,
148 KMOD_INSERT_FORCE_MODVERSION
= 0x2,
151 /* Flags to kmod_module_probe_insert_module() */
153 KMOD_PROBE_FORCE_VERMAGIC
= 0x00001,
154 KMOD_PROBE_FORCE_MODVERSION
= 0x00002,
155 KMOD_PROBE_IGNORE_COMMAND
= 0x00004,
156 KMOD_PROBE_IGNORE_LOADED
= 0x00008,
157 KMOD_PROBE_DRY_RUN
= 0x00010,
158 KMOD_PROBE_FAIL_ON_LOADED
= 0x00020,
160 /* codes below can be used in return value, too */
161 KMOD_PROBE_APPLY_BLACKLIST_ALL
= 0x10000,
162 KMOD_PROBE_APPLY_BLACKLIST
= 0x20000,
165 int kmod_module_remove_module(struct kmod_module
*mod
, unsigned int flags
);
166 int kmod_module_insert_module(struct kmod_module
*mod
, unsigned int flags
,
167 const char *options
);
168 int kmod_module_probe_insert_module(struct kmod_module
*mod
,
169 unsigned int flags
, const char *extra_options
,
170 int (*run_install
)(struct kmod_module
*m
,
171 const char *cmdline
, void *data
),
173 void (*print_action
)(struct kmod_module
*m
, bool install
,
174 const char *options
));
177 const char *kmod_module_get_name(const struct kmod_module
*mod
);
178 const char *kmod_module_get_path(const struct kmod_module
*mod
);
179 const char *kmod_module_get_options(const struct kmod_module
*mod
);
180 const char *kmod_module_get_install_commands(const struct kmod_module
*mod
);
181 const char *kmod_module_get_remove_commands(const struct kmod_module
*mod
);
182 struct kmod_list
*kmod_module_get_dependencies(const struct kmod_module
*mod
);
183 int kmod_module_get_softdeps(const struct kmod_module
*mod
,
184 struct kmod_list
**pre
, struct kmod_list
**post
);
185 int kmod_module_get_filtered_blacklist(const struct kmod_ctx
*ctx
,
186 const struct kmod_list
*input
,
187 struct kmod_list
**output
);
192 * Information regarding "live information" from module's state, as returned
196 enum kmod_module_initstate
{
197 KMOD_MODULE_BUILTIN
= 0,
201 /* Padding to make sure enum is not mapped to char */
202 _KMOD_MODULE_PAD
= (1 << 31),
204 const char *kmod_module_initstate_str(enum kmod_module_initstate state
);
205 int kmod_module_get_initstate(const struct kmod_module
*mod
);
206 int kmod_module_get_refcnt(const struct kmod_module
*mod
);
207 struct kmod_list
*kmod_module_get_holders(const struct kmod_module
*mod
);
208 struct kmod_list
*kmod_module_get_sections(const struct kmod_module
*mod
);
209 const char *kmod_module_section_get_name(const struct kmod_list
*entry
);
210 unsigned long kmod_module_section_get_address(const struct kmod_list
*entry
);
211 void kmod_module_section_free_list(struct kmod_list
*list
);
212 long kmod_module_get_size(const struct kmod_module
*mod
);
217 * Information retrieved from ELF headers and sections
220 int kmod_module_get_info(const struct kmod_module
*mod
, struct kmod_list
**list
);
221 const char *kmod_module_info_get_key(const struct kmod_list
*entry
);
222 const char *kmod_module_info_get_value(const struct kmod_list
*entry
);
223 void kmod_module_info_free_list(struct kmod_list
*list
);
225 int kmod_module_get_versions(const struct kmod_module
*mod
, struct kmod_list
**list
);
226 const char *kmod_module_version_get_symbol(const struct kmod_list
*entry
);
227 uint64_t kmod_module_version_get_crc(const struct kmod_list
*entry
);
228 void kmod_module_versions_free_list(struct kmod_list
*list
);
230 int kmod_module_get_symbols(const struct kmod_module
*mod
, struct kmod_list
**list
);
231 const char *kmod_module_symbol_get_symbol(const struct kmod_list
*entry
);
232 uint64_t kmod_module_symbol_get_crc(const struct kmod_list
*entry
);
233 void kmod_module_symbols_free_list(struct kmod_list
*list
);
235 enum kmod_symbol_bind
{
236 KMOD_SYMBOL_NONE
= '\0',
237 KMOD_SYMBOL_LOCAL
= 'L',
238 KMOD_SYMBOL_GLOBAL
= 'G',
239 KMOD_SYMBOL_WEAK
= 'W',
240 KMOD_SYMBOL_UNDEF
= 'U'
243 int kmod_module_get_dependency_symbols(const struct kmod_module
*mod
, struct kmod_list
**list
);
244 const char *kmod_module_dependency_symbol_get_symbol(const struct kmod_list
*entry
);
245 int kmod_module_dependency_symbol_get_bind(const struct kmod_list
*entry
);
246 uint64_t kmod_module_dependency_symbol_get_crc(const struct kmod_list
*entry
);
247 void kmod_module_dependency_symbols_free_list(struct kmod_list
*list
);