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33a5cc29 KS |
1 | /* |
2 | * libudev - interface to udev device information | |
3 | * | |
fbb31cd6 | 4 | * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org> |
33a5cc29 | 5 | * |
4061ab9f KS |
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. | |
33a5cc29 KS |
10 | */ |
11 | ||
12 | #ifndef _LIBUDEV_PRIVATE_H_ | |
13 | #define _LIBUDEV_PRIVATE_H_ | |
14 | ||
7d563a17 | 15 | #include <syslog.h> |
d412a685 | 16 | #include <signal.h> |
28460195 KS |
17 | #include <stdint.h> |
18 | #include <stdbool.h> | |
33a5cc29 | 19 | #include "libudev.h" |
33a5cc29 | 20 | |
979ff016 | 21 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
912541b0 KS |
22 | #define READ_END 0 |
23 | #define WRITE_END 1 | |
979ff016 | 24 | |
119f66fc | 25 | static inline void __attribute__((always_inline, format(printf, 2, 3))) |
8cd2e972 | 26 | udev_log_null(struct udev *udev, const char *format, ...) {} |
9176ac1f | 27 | |
119f66fc KS |
28 | #define udev_log_cond(udev, prio, arg...) \ |
29 | do { \ | |
30 | if (udev_get_log_priority(udev) >= prio) \ | |
1d67ec16 | 31 | udev_log(udev, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \ |
119f66fc KS |
32 | } while (0) |
33 | ||
045a3bc8 KS |
34 | #ifdef ENABLE_LOGGING |
35 | # ifdef ENABLE_DEBUG | |
119f66fc | 36 | # define dbg(udev, arg...) udev_log_cond(udev, LOG_DEBUG, ## arg) |
e0083e8e | 37 | # else |
8cd2e972 | 38 | # define dbg(udev, arg...) udev_log_null(udev, ## arg) |
e0083e8e | 39 | # endif |
119f66fc KS |
40 | # define info(udev, arg...) udev_log_cond(udev, LOG_INFO, ## arg) |
41 | # define err(udev, arg...) udev_log_cond(udev, LOG_ERR, ## arg) | |
7d563a17 | 42 | #else |
8cd2e972 KS |
43 | # define dbg(udev, arg...) udev_log_null(udev, ## arg) |
44 | # define info(udev, arg...) udev_log_null(udev, ## arg) | |
45 | # define err(udev, arg...) udev_log_null(udev, ## arg) | |
7d563a17 | 46 | #endif |
33a5cc29 | 47 | |
666fcf03 KS |
48 | #define UDEV_EXPORT __attribute__ ((visibility("default"))) |
49 | ||
9060b066 KS |
50 | static inline void udev_log_init(const char *program_name) |
51 | { | |
912541b0 | 52 | openlog(program_name, LOG_PID | LOG_CONS, LOG_DAEMON); |
9060b066 KS |
53 | } |
54 | ||
55 | static inline void udev_log_close(void) | |
56 | { | |
912541b0 | 57 | closelog(); |
9060b066 KS |
58 | } |
59 | ||
60 | /* libudev.c */ | |
33a5cc29 | 61 | void udev_log(struct udev *udev, |
912541b0 KS |
62 | int priority, const char *file, int line, const char *fn, |
63 | const char *format, ...) | |
64 | __attribute__((format(printf, 6, 7))); | |
4f1795cc | 65 | int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *ts_usec[]); |
37ed4f56 KS |
66 | struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value); |
67 | struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev); | |
11d543c1 | 68 | |
9060b066 | 69 | /* libudev-device.c */ |
a5710160 | 70 | struct udev_device *udev_device_new(struct udev *udev); |
cad40a5f | 71 | struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id); |
3cf1a8e3 | 72 | mode_t udev_device_get_devnode_mode(struct udev_device *udev_device); |
37ed4f56 | 73 | int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath); |
37ed4f56 | 74 | int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode); |
6c29f2b9 | 75 | int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique); |
37ed4f56 KS |
76 | void udev_device_cleanup_devlinks_list(struct udev_device *udev_device); |
77 | struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value); | |
fc8d61c5 KS |
78 | void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property); |
79 | int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device); | |
37ed4f56 KS |
80 | char **udev_device_get_properties_envp(struct udev_device *udev_device); |
81 | ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf); | |
5f59fa09 | 82 | int udev_device_read_db(struct udev_device *udev_device, const char *dbfile); |
37ed4f56 KS |
83 | int udev_device_read_uevent_file(struct udev_device *udev_device); |
84 | int udev_device_set_action(struct udev_device *udev_device, const char *action); | |
37ed4f56 | 85 | const char *udev_device_get_devpath_old(struct udev_device *udev_device); |
4281da1f | 86 | const char *udev_device_get_id_filename(struct udev_device *udev_device); |
48a0170b | 87 | void udev_device_set_is_initialized(struct udev_device *udev_device); |
fbb31cd6 | 88 | int udev_device_add_tag(struct udev_device *udev_device, const char *tag); |
28460195 | 89 | void udev_device_cleanup_tags_list(struct udev_device *udev_device); |
9c6a11b1 KS |
90 | unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device); |
91 | void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized); | |
37ed4f56 KS |
92 | int udev_device_get_devlink_priority(struct udev_device *udev_device); |
93 | int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio); | |
37ed4f56 KS |
94 | int udev_device_get_watch_handle(struct udev_device *udev_device); |
95 | int udev_device_set_watch_handle(struct udev_device *udev_device, int handle); | |
fc416258 | 96 | int udev_device_get_ifindex(struct udev_device *udev_device); |
37ed4f56 | 97 | void udev_device_set_info_loaded(struct udev_device *device); |
9ead6627 KS |
98 | bool udev_device_get_db_persist(struct udev_device *udev_device); |
99 | void udev_device_set_db_persist(struct udev_device *udev_device); | |
11d543c1 | 100 | |
98631e1c | 101 | /* libudev-device-private.c */ |
37ed4f56 KS |
102 | int udev_device_update_db(struct udev_device *udev_device); |
103 | int udev_device_delete_db(struct udev_device *udev_device); | |
c1dbe11d | 104 | int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add); |
fc233a87 | 105 | |
9060b066 | 106 | /* libudev-monitor.c - netlink/unix socket communication */ |
1e03b754 KS |
107 | int udev_monitor_disconnect(struct udev_monitor *udev_monitor); |
108 | int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender); | |
109 | int udev_monitor_send_device(struct udev_monitor *udev_monitor, | |
912541b0 | 110 | struct udev_monitor *destination, struct udev_device *udev_device); |
7459bcdc | 111 | struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd); |
9925ab04 | 112 | |
9060b066 | 113 | /* libudev-list.c */ |
8cd2e972 | 114 | struct udev_list_node { |
912541b0 | 115 | struct udev_list_node *next, *prev; |
e345e267 | 116 | }; |
869c9031 | 117 | struct udev_list { |
912541b0 KS |
118 | struct udev *udev; |
119 | struct udev_list_node node; | |
120 | struct udev_list_entry **entries; | |
121 | unsigned int entries_cur; | |
122 | unsigned int entries_max; | |
123 | bool unique; | |
869c9031 | 124 | }; |
ff2c503d | 125 | #define UDEV_LIST(list) struct udev_list_node list = { &(list), &(list) } |
869c9031 KS |
126 | void udev_list_node_init(struct udev_list_node *list); |
127 | int udev_list_node_is_empty(struct udev_list_node *list); | |
37ed4f56 KS |
128 | void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list); |
129 | void udev_list_node_remove(struct udev_list_node *entry); | |
9dcf7ec8 | 130 | #define udev_list_node_foreach(node, list) \ |
912541b0 KS |
131 | for (node = (list)->next; \ |
132 | node != list; \ | |
133 | node = (node)->next) | |
9dcf7ec8 | 134 | #define udev_list_node_foreach_safe(node, tmp, list) \ |
912541b0 KS |
135 | for (node = (list)->next, tmp = (node)->next; \ |
136 | node != list; \ | |
137 | node = tmp, tmp = (tmp)->next) | |
869c9031 KS |
138 | void udev_list_init(struct udev *udev, struct udev_list *list, bool unique); |
139 | void udev_list_cleanup(struct udev_list *list); | |
140 | struct udev_list_entry *udev_list_get_entry(struct udev_list *list); | |
141 | struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value); | |
37ed4f56 | 142 | void udev_list_entry_delete(struct udev_list_entry *entry); |
37ed4f56 | 143 | void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry); |
869c9031 | 144 | void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list); |
8958da13 KS |
145 | int udev_list_entry_get_num(struct udev_list_entry *list_entry); |
146 | void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num); | |
daa849db | 147 | #define udev_list_entry_foreach_safe(entry, tmp, first) \ |
912541b0 KS |
148 | for (entry = first, tmp = udev_list_entry_get_next(entry); \ |
149 | entry != NULL; \ | |
150 | entry = tmp, tmp = udev_list_entry_get_next(tmp)) | |
bf7ad0ea | 151 | |
9060b066 | 152 | /* libudev-queue.c */ |
f503f6b2 AJ |
153 | unsigned long long int udev_get_kernel_seqnum(struct udev *udev); |
154 | int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum); | |
155 | ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size); | |
156 | ssize_t udev_queue_skip_devpath(FILE *queue_file); | |
157 | ||
98631e1c | 158 | /* libudev-queue-private.c */ |
f503f6b2 | 159 | struct udev_queue_export *udev_queue_export_new(struct udev *udev); |
f6577968 | 160 | struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export); |
f503f6b2 AJ |
161 | void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export); |
162 | int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); | |
163 | int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); | |
64ccdf82 | 164 | |
44b49d37 | 165 | /* libudev-util.c */ |
912541b0 KS |
166 | #define UTIL_PATH_SIZE 1024 |
167 | #define UTIL_NAME_SIZE 512 | |
168 | #define UTIL_LINE_SIZE 16384 | |
169 | #define UDEV_ALLOWED_CHARS_INPUT "/ $%?," | |
cdfdc85f | 170 | ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size); |
37ed4f56 KS |
171 | int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size); |
172 | int util_log_priority(const char *priority); | |
065db052 | 173 | size_t util_path_encode(const char *src, char *dest, size_t size); |
37ed4f56 KS |
174 | size_t util_path_decode(char *s); |
175 | void util_remove_trailing_chars(char *path, char c); | |
065db052 | 176 | size_t util_strpcpy(char **dest, size_t size, const char *src); |
119f66fc | 177 | size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) __attribute__((sentinel)); |
065db052 | 178 | size_t util_strscpy(char *dest, size_t size, const char *src); |
119f66fc | 179 | size_t util_strscpyl(char *dest, size_t size, const char *src, ...) __attribute__((sentinel)); |
0bbe8838 KS |
180 | int util_replace_whitespace(const char *str, char *to, size_t len); |
181 | int util_replace_chars(char *str, const char *white); | |
28460195 KS |
182 | unsigned int util_string_hash32(const char *key); |
183 | uint64_t util_string_bloom64(const char *str); | |
44b49d37 KS |
184 | |
185 | /* libudev-util-private.c */ | |
186 | int util_create_path(struct udev *udev, const char *path); | |
51f43b53 | 187 | int util_create_path_selinux(struct udev *udev, const char *path); |
44b49d37 | 188 | int util_delete_path(struct udev *udev, const char *path); |
44b49d37 KS |
189 | uid_t util_lookup_user(struct udev *udev, const char *user); |
190 | gid_t util_lookup_group(struct udev *udev, const char *group); | |
44b49d37 | 191 | int util_resolve_subsys_kernel(struct udev *udev, const char *string, |
912541b0 | 192 | char *result, size_t maxsize, int read_value); |
4f1795cc | 193 | unsigned long long ts_usec(const struct timespec *ts); |
2181d30a | 194 | unsigned long long now_usec(void); |
44b49d37 KS |
195 | |
196 | /* libudev-selinux-private.c */ | |
045a3bc8 | 197 | #ifndef WITH_SELINUX |
44b49d37 KS |
198 | static inline void udev_selinux_init(struct udev *udev) {} |
199 | static inline void udev_selinux_exit(struct udev *udev) {} | |
200 | static inline void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) {} | |
201 | static inline void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) {} | |
ae8011a0 | 202 | static inline void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode) {} |
44b49d37 KS |
203 | static inline void udev_selinux_resetfscreatecon(struct udev *udev) {} |
204 | #else | |
205 | void udev_selinux_init(struct udev *udev); | |
206 | void udev_selinux_exit(struct udev *udev); | |
207 | void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode); | |
208 | void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode); | |
ae8011a0 | 209 | void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode); |
44b49d37 KS |
210 | void udev_selinux_resetfscreatecon(struct udev *udev); |
211 | #endif | |
cb9a0eee | 212 | |
33a5cc29 | 213 | #endif |