src/libudev/libudev-private.h

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   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.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #ifndef _LIBUDEV_PRIVATE_H_
  21 #define _LIBUDEV_PRIVATE_H_
  22
  23 #include <syslog.h>
  24 #include <signal.h>
  25 #include <stdint.h>
  26 #include <stdbool.h>
  27
  28 #include "libudev.h"
  29 #include "macro.h"
  30 #include "util.h"
  31 #include "mkdir.h"
  32 #include "strxcpyx.h"
  33
  34 #define READ_END  0
  35 #define WRITE_END 1
  36
  37 /* avoid (sometimes expensive) calculations of parameters for debug output */
  38 #define udev_log_cond(udev, prio, arg...) \
  39   do { \
  40     if (udev_get_log_priority(udev) >= prio) \
  41       udev_log(udev, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \
  42   } while (0)
  43
  44 #define udev_dbg(udev, arg...) udev_log_cond(udev, LOG_DEBUG, ## arg)
  45 #define udev_info(udev, arg...) udev_log_cond(udev, LOG_INFO, ## arg)
  46 #define udev_err(udev, arg...) udev_log_cond(udev, LOG_ERR, ## arg)
  47
  48 /* libudev.c */
  49 void udev_log(struct udev *udev,
  50               int priority, const char *file, int line, const char *fn,
  51               const char *format, ...)
  52               __attribute__((format(printf, 6, 7)));
  53 int udev_get_rules_path(struct udev *udev, char **path[], usec_t *ts_usec[]);
  54 struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value);
  55 struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev);
  56
  57 /* libudev-device.c */
  58 struct udev_device *udev_device_new(struct udev *udev);
  59 mode_t udev_device_get_devnode_mode(struct udev_device *udev_device);
  60 uid_t udev_device_get_devnode_uid(struct udev_device *udev_device);
  61 gid_t udev_device_get_devnode_gid(struct udev_device *udev_device);
  62 int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem);
  63 int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath);
  64 int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode);
  65 int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink);
  66 void udev_device_cleanup_devlinks_list(struct udev_device *udev_device);
  67 struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value);
  68 void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property);
  69 int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device);
  70 char **udev_device_get_properties_envp(struct udev_device *udev_device);
  71 ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf);
  72 int udev_device_read_db(struct udev_device *udev_device, const char *dbfile);
  73 int udev_device_read_uevent_file(struct udev_device *udev_device);
  74 int udev_device_set_action(struct udev_device *udev_device, const char *action);
  75 const char *udev_device_get_devpath_old(struct udev_device *udev_device);
  76 const char *udev_device_get_id_filename(struct udev_device *udev_device);
  77 void udev_device_set_is_initialized(struct udev_device *udev_device);
  78 int udev_device_add_tag(struct udev_device *udev_device, const char *tag);
  79 void udev_device_cleanup_tags_list(struct udev_device *udev_device);
  80 usec_t udev_device_get_usec_initialized(struct udev_device *udev_device);
  81 void udev_device_set_usec_initialized(struct udev_device *udev_device, usec_t usec_initialized);
  82 int udev_device_get_devlink_priority(struct udev_device *udev_device);
  83 int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio);
  84 int udev_device_get_watch_handle(struct udev_device *udev_device);
  85 int udev_device_set_watch_handle(struct udev_device *udev_device, int handle);
  86 int udev_device_get_ifindex(struct udev_device *udev_device);
  87 void udev_device_set_info_loaded(struct udev_device *device);
  88 bool udev_device_get_db_persist(struct udev_device *udev_device);
  89 void udev_device_set_db_persist(struct udev_device *udev_device);
  90
  91 /* libudev-device-private.c */
  92 int udev_device_update_db(struct udev_device *udev_device);
  93 int udev_device_delete_db(struct udev_device *udev_device);
  94 int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add);
  95
  96 /* libudev-monitor.c - netlink/unix socket communication  */
  97 int udev_monitor_disconnect(struct udev_monitor *udev_monitor);
  98 int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender);
  99 int udev_monitor_send_device(struct udev_monitor *udev_monitor,
 100                              struct udev_monitor *destination, struct udev_device *udev_device);
 101 struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd);
 102
 103 /* libudev-list.c */
 104 struct udev_list_node {
 105         struct udev_list_node *next, *prev;
 106 };
 107 struct udev_list {
 108         struct udev *udev;
 109         struct udev_list_node node;
 110         struct udev_list_entry **entries;
 111         unsigned int entries_cur;
 112         unsigned int entries_max;
 113         bool unique;
 114 };
 115 #define UDEV_LIST(list) struct udev_list_node list = { &(list), &(list) }
 116 void udev_list_node_init(struct udev_list_node *list);
 117 int udev_list_node_is_empty(struct udev_list_node *list);
 118 void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list);
 119 void udev_list_node_remove(struct udev_list_node *entry);
 120 #define udev_list_node_foreach(node, list) \
 121         for (node = (list)->next; \
 122              node != list; \
 123              node = (node)->next)
 124 #define udev_list_node_foreach_safe(node, tmp, list) \
 125         for (node = (list)->next, tmp = (node)->next; \
 126              node != list; \
 127              node = tmp, tmp = (tmp)->next)
 128 void udev_list_init(struct udev *udev, struct udev_list *list, bool unique);
 129 void udev_list_cleanup(struct udev_list *list);
 130 struct udev_list_entry *udev_list_get_entry(struct udev_list *list);
 131 struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value);
 132 void udev_list_entry_delete(struct udev_list_entry *entry);
 133 void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry);
 134 void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list);
 135 int udev_list_entry_get_num(struct udev_list_entry *list_entry);
 136 void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num);
 137 #define udev_list_entry_foreach_safe(entry, tmp, first) \
 138         for (entry = first, tmp = udev_list_entry_get_next(entry); \
 139              entry != NULL; \
 140              entry = tmp, tmp = udev_list_entry_get_next(tmp))
 141
 142 /* libudev-queue.c */
 143 unsigned long long int udev_get_kernel_seqnum(struct udev *udev);
 144 int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum);
 145 ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size);
 146 ssize_t udev_queue_skip_devpath(FILE *queue_file);
 147
 148 /* libudev-queue-private.c */
 149 struct udev_queue_export *udev_queue_export_new(struct udev *udev);
 150 struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export);
 151 void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export);
 152 int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device);
 153 int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device);
 154
 155 /* libudev-hwdb.c */
 156 bool udev_hwdb_validate(struct udev_hwdb *hwdb);
 157
 158 /* libudev-util.c */
 159 #define UTIL_PATH_SIZE                      1024
 160 #define UTIL_NAME_SIZE                       512
 161 #define UTIL_LINE_SIZE                     16384
 162 #define UDEV_ALLOWED_CHARS_INPUT        "/ $%?,"
 163 ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size);
 164 int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size);
 165 int util_log_priority(const char *priority);
 166 size_t util_path_encode(const char *src, char *dest, size_t size);
 167 void util_remove_trailing_chars(char *path, char c);
 168 int util_replace_whitespace(const char *str, char *to, size_t len);
 169 int util_replace_chars(char *str, const char *white);
 170 unsigned int util_string_hash32(const char *key);
 171 uint64_t util_string_bloom64(const char *str);
 172
 173 /* libudev-util-private.c */
 174 int util_delete_path(struct udev *udev, const char *path);
 175 uid_t util_lookup_user(struct udev *udev, const char *user);
 176 gid_t util_lookup_group(struct udev *udev, const char *group);
 177 int util_resolve_subsys_kernel(struct udev *udev, const char *string, char *result, size_t maxsize, int read_value);
 178 ssize_t print_kmsg(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
 179 #endif