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
);
53 int kmod_load_resources(struct kmod_ctx
*ctx
);
54 void kmod_unload_resources(struct kmod_ctx
*ctx
);
57 KMOD_RESOURCES_OK
= 0,
58 KMOD_RESOURCES_MUST_RELOAD
= 1,
59 KMOD_RESOURCES_MUST_RECREATE
= 2,
62 int kmod_validate_resources(struct kmod_ctx
*ctx
);
65 KMOD_INDEX_MODULES_DEP
= 0,
66 KMOD_INDEX_MODULES_ALIAS
,
67 KMOD_INDEX_MODULES_SYMBOL
,
68 /* Padding to make sure enum is not mapped to char */
69 _KMOD_INDEX_PAD
= (1 << 31),
72 int kmod_dump_index(struct kmod_ctx
*ctx
, enum kmod_index type
, int fd
);
77 * access to kmod generated lists
80 struct kmod_list
*kmod_list_next(const struct kmod_list
*list
,
81 const struct kmod_list
*curr
);
82 struct kmod_list
*kmod_list_prev(const struct kmod_list
*list
,
83 const struct kmod_list
*curr
);
84 struct kmod_list
*kmod_list_last(const struct kmod_list
*list
);
86 #define kmod_list_foreach(list_entry, first_entry) \
87 for (list_entry = first_entry; \
89 list_entry = kmod_list_next(first_entry, list_entry))
91 #define kmod_list_foreach_reverse(list_entry, first_entry) \
92 for (list_entry = kmod_list_last(first_entry); \
94 list_entry = kmod_list_prev(first_entry, list_entry))
99 * access to configuration lists - it allows to get each configuration's
100 * key/value stored by kmod
102 struct kmod_config_iter
;
103 struct kmod_config_iter
*kmod_config_get_blacklists(const struct kmod_ctx
*ctx
);
104 struct kmod_config_iter
*kmod_config_get_install_commands(const struct kmod_ctx
*ctx
);
105 struct kmod_config_iter
*kmod_config_get_remove_commands(const struct kmod_ctx
*ctx
);
106 struct kmod_config_iter
*kmod_config_get_aliases(const struct kmod_ctx
*ctx
);
107 struct kmod_config_iter
*kmod_config_get_options(const struct kmod_ctx
*ctx
);
108 struct kmod_config_iter
*kmod_config_get_softdeps(const struct kmod_ctx
*ctx
);
109 const char *kmod_config_iter_get_key(const struct kmod_config_iter
*iter
);
110 const char *kmod_config_iter_get_value(const struct kmod_config_iter
*iter
);
111 bool kmod_config_iter_next(struct kmod_config_iter
*iter
);
112 void kmod_config_iter_free_iter(struct kmod_config_iter
*iter
);
116 KMOD_REMOVE_FORCE
= O_TRUNC
,
117 KMOD_REMOVE_NOWAIT
= O_NONBLOCK
,
120 /* Insertion flags */
122 KMOD_INSERT_FORCE_VERMAGIC
= 0x1,
123 KMOD_INSERT_FORCE_MODVERSION
= 0x2,
126 /* Flags to kmod_module_probe_insert_module() */
128 KMOD_PROBE_FORCE_VERMAGIC
= 0x01,
129 KMOD_PROBE_FORCE_MODVERSION
= 0x02,
131 /* codes below can be used in return value, too */
132 KMOD_PROBE_APPLY_BLACKLIST_ALL
= 0x04,
133 KMOD_PROBE_APPLY_BLACKLIST
= 0x08,
134 KMOD_PROBE_STOP_ON_DEP_FAILURE
= 0x0F,
135 KMOD_PROBE_STOP_ON_COMMAND
= 0x10,
136 KMOD_PROBE_IGNORE_COMMAND
= 0x20,
137 KMOD_PROBE_STOP_ON_ALREADY_LOADED
= 0x30,
143 * Operate on kernel modules
146 int kmod_module_new_from_name(struct kmod_ctx
*ctx
, const char *name
,
147 struct kmod_module
**mod
);
148 int kmod_module_new_from_path(struct kmod_ctx
*ctx
, const char *path
,
149 struct kmod_module
**mod
);
150 int kmod_module_new_from_lookup(struct kmod_ctx
*ctx
, const char *given_alias
,
151 struct kmod_list
**list
);
152 int kmod_module_new_from_loaded(struct kmod_ctx
*ctx
, struct kmod_list
**list
);
154 struct kmod_module
*kmod_module_ref(struct kmod_module
*mod
);
155 struct kmod_module
*kmod_module_unref(struct kmod_module
*mod
);
156 int kmod_module_unref_list(struct kmod_list
*list
);
157 struct kmod_module
*kmod_module_get_module(const struct kmod_list
*entry
);
158 struct kmod_list
*kmod_module_get_dependencies(const struct kmod_module
*mod
);
160 int kmod_module_get_filtered_blacklist(const struct kmod_ctx
*ctx
, const struct kmod_list
*input
, struct kmod_list
**output
);
162 int kmod_module_remove_module(struct kmod_module
*mod
, unsigned int flags
);
163 int kmod_module_insert_module(struct kmod_module
*mod
, unsigned int flags
, const char *options
);
164 int kmod_module_probe_insert_module(struct kmod_module
*mod
,
165 unsigned int flags
, const char *extra_options
,
166 int (*run_install
)(struct kmod_module
*m
, const char *cmdline
, void *data
),
169 const char *kmod_module_get_name(const struct kmod_module
*mod
);
170 const char *kmod_module_get_path(const struct kmod_module
*mod
);
172 enum kmod_module_initstate
{
173 KMOD_MODULE_BUILTIN
= 0,
177 /* Padding to make sure enum is not mapped to char */
178 _KMOD_MODULE_PAD
= (1 << 31),
180 const char *kmod_module_initstate_str(enum kmod_module_initstate state
);
181 int kmod_module_get_initstate(const struct kmod_module
*mod
);
182 int kmod_module_get_refcnt(const struct kmod_module
*mod
);
183 struct kmod_list
*kmod_module_get_holders(const struct kmod_module
*mod
);
185 struct kmod_list
*kmod_module_get_sections(const struct kmod_module
*mod
);
186 const char *kmod_module_section_get_name(const struct kmod_list
*entry
);
187 unsigned long kmod_module_section_get_address(const struct kmod_list
*entry
);
188 void kmod_module_section_free_list(struct kmod_list
*list
);
190 long kmod_module_get_size(const struct kmod_module
*mod
);
192 const char *kmod_module_get_options(const struct kmod_module
*mod
);
193 const char *kmod_module_get_install_commands(const struct kmod_module
*mod
);
194 const char *kmod_module_get_remove_commands(const struct kmod_module
*mod
);
196 int kmod_module_get_softdeps(const struct kmod_module
*mod
, struct kmod_list
**pre
, struct kmod_list
**post
);
198 int kmod_module_get_info(const struct kmod_module
*mod
, struct kmod_list
**list
);
199 const char *kmod_module_info_get_key(const struct kmod_list
*entry
);
200 const char *kmod_module_info_get_value(const struct kmod_list
*entry
);
201 void kmod_module_info_free_list(struct kmod_list
*list
);
203 int kmod_module_get_versions(const struct kmod_module
*mod
, struct kmod_list
**list
);
204 const char *kmod_module_version_get_symbol(const struct kmod_list
*entry
);
205 uint64_t kmod_module_version_get_crc(const struct kmod_list
*entry
);
206 void kmod_module_versions_free_list(struct kmod_list
*list
);
208 int kmod_module_get_symbols(const struct kmod_module
*mod
, struct kmod_list
**list
);
209 const char *kmod_module_symbol_get_symbol(const struct kmod_list
*entry
);
210 uint64_t kmod_module_symbol_get_crc(const struct kmod_list
*entry
);
211 void kmod_module_symbols_free_list(struct kmod_list
*list
);
213 enum kmod_symbol_bind
{
214 KMOD_SYMBOL_NONE
= '\0',
215 KMOD_SYMBOL_LOCAL
= 'L',
216 KMOD_SYMBOL_GLOBAL
= 'G',
217 KMOD_SYMBOL_WEAK
= 'W',
218 KMOD_SYMBOL_UNDEF
= 'U'
221 int kmod_module_get_dependency_symbols(const struct kmod_module
*mod
, struct kmod_list
**list
);
222 const char *kmod_module_dependency_symbol_get_symbol(const struct kmod_list
*entry
);
223 int kmod_module_dependency_symbol_get_bind(const struct kmod_list
*entry
);
224 uint64_t kmod_module_dependency_symbol_get_crc(const struct kmod_list
*entry
);
225 void kmod_module_dependency_symbols_free_list(struct kmod_list
*list
);