src/libsystemd/sd-device/device-internal.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include "sd-device.h"
   5
   6 #include "hashmap.h"
   7 #include "set.h"
   8 #include "time-util.h"
   9
  10 struct sd_device {
  11         unsigned n_ref;
  12
  13         int watch_handle;
  14
  15         sd_device *parent;
  16
  17         OrderedHashmap *properties;
  18         Iterator properties_iterator;
  19         uint64_t properties_generation; /* changes whenever the properties are changed */
  20         uint64_t properties_iterator_generation; /* generation when iteration was started */
  21
  22         /* the subset of the properties that should be written to the db */
  23         OrderedHashmap *properties_db;
  24
  25         Hashmap *sysattr_values; /* cached sysattr values */
  26
  27         Set *sysattrs; /* names of sysattrs */
  28         Iterator sysattrs_iterator;
  29
  30         Set *tags;
  31         Iterator tags_iterator;
  32         uint64_t tags_generation; /* changes whenever the tags are changed */
  33         uint64_t tags_iterator_generation; /* generation when iteration was started */
  34
  35         Set *devlinks;
  36         Iterator devlinks_iterator;
  37         uint64_t devlinks_generation; /* changes whenever the devlinks are changed */
  38         uint64_t devlinks_iterator_generation; /* generation when iteration was started */
  39         int devlink_priority;
  40
  41         int ifindex;
  42         char *devtype;
  43         char *devname;
  44         dev_t devnum;
  45
  46         char **properties_strv; /* the properties hashmap as a strv */
  47         uint8_t *properties_nulstr; /* the same as a nulstr */
  48         size_t properties_nulstr_len;
  49
  50         char *syspath;
  51         const char *devpath;
  52         const char *sysnum;
  53         char *sysname;
  54
  55         char *subsystem;
  56         char *driver_subsystem; /* only set for the 'drivers' subsystem */
  57         char *driver;
  58
  59         char *id_filename;
  60
  61         uint64_t usec_initialized;
  62
  63         mode_t devmode;
  64         uid_t devuid;
  65         gid_t devgid;
  66
  67         bool parent_set:1; /* no need to try to reload parent */
  68         bool sysattrs_read:1; /* don't try to re-read sysattrs once read */
  69         bool property_tags_outdated:1; /* need to update TAGS= property */
  70         bool property_devlinks_outdated:1; /* need to update DEVLINKS= property */
  71         bool properties_buf_outdated:1; /* need to reread hashmap */
  72         bool sysname_set:1; /* don't reread sysname */
  73         bool subsystem_set:1; /* don't reread subsystem */
  74         bool driver_subsystem_set:1; /* don't reread subsystem */
  75         bool driver_set:1; /* don't reread driver */
  76         bool uevent_loaded:1; /* don't reread uevent */
  77         bool db_loaded; /* don't reread db */
  78
  79         bool is_initialized:1;
  80         bool sealed:1; /* don't read more information from uevent/db */
  81         bool db_persist:1; /* don't clean up the db when switching from initrd to real root */
  82 };
  83
  84 typedef enum DeviceAction {
  85         DEVICE_ACTION_ADD,
  86         DEVICE_ACTION_REMOVE,
  87         DEVICE_ACTION_CHANGE,
  88         DEVICE_ACTION_MOVE,
  89         DEVICE_ACTION_ONLINE,
  90         DEVICE_ACTION_OFFLINE,
  91         DEVICE_ACTION_BIND,
  92         DEVICE_ACTION_UNBIND,
  93         _DEVICE_ACTION_MAX,
  94         _DEVICE_ACTION_INVALID = -1,
  95 } DeviceAction;
  96
  97 int device_new_aux(sd_device **ret);
  98 int device_add_property_aux(sd_device *device, const char *key, const char *value, bool db);
  99 int device_add_property_internal(sd_device *device, const char *key, const char *value);
 100 int device_read_uevent_file(sd_device *device);
 101
 102 int device_set_syspath(sd_device *device, const char *_syspath, bool verify);
 103 int device_set_ifindex(sd_device *device, const char *ifindex);
 104 int device_set_devmode(sd_device *device, const char *devmode);
 105 int device_set_devname(sd_device *device, const char *_devname);
 106 int device_set_devtype(sd_device *device, const char *_devtype);
 107 int device_set_devnum(sd_device *device, const char *major, const char *minor);
 108 int device_set_subsystem(sd_device *device, const char *_subsystem);
 109 int device_set_driver(sd_device *device, const char *_driver);
 110 int device_set_usec_initialized(sd_device *device, usec_t when);
 111
 112 DeviceAction device_action_from_string(const char *s) _pure_;
 113 const char *device_action_to_string(DeviceAction a) _const_;