src/network/networkd-link-bus.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright © 2015 Tom Gundersen
   4 ***/
   5
   6 #include "alloc-util.h"
   7 #include "bus-util.h"
   8 #include "networkd-link.h"
   9 #include "networkd-manager.h"
  10 #include "parse-util.h"
  11 #include "strv.h"
  12
  13 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_operational_state, link_operstate, LinkOperationalState);
  14 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_administrative_state, link_state, LinkState);
  15
  16 const sd_bus_vtable link_vtable[] = {
  17         SD_BUS_VTABLE_START(0),
  18
  19         SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Link, operstate), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  20         SD_BUS_PROPERTY("AdministrativeState", "s", property_get_administrative_state, offsetof(Link, state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  21
  22         SD_BUS_VTABLE_END
  23 };
  24
  25 static char *link_bus_path(Link *link) {
  26         _cleanup_free_ char *ifindex = NULL;
  27         char *p;
  28         int r;
  29
  30         assert(link);
  31         assert(link->ifindex > 0);
  32
  33         if (asprintf(&ifindex, "%d", link->ifindex) < 0)
  34                 return NULL;
  35
  36         r = sd_bus_path_encode("/org/freedesktop/network1/link", ifindex, &p);
  37         if (r < 0)
  38                 return NULL;
  39
  40         return p;
  41 }
  42
  43 int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
  44         _cleanup_strv_free_ char **l = NULL;
  45         Manager *m = userdata;
  46         unsigned c = 0;
  47         Link *link;
  48         Iterator i;
  49
  50         assert(bus);
  51         assert(path);
  52         assert(m);
  53         assert(nodes);
  54
  55         l = new0(char*, hashmap_size(m->links) + 1);
  56         if (!l)
  57                 return -ENOMEM;
  58
  59         HASHMAP_FOREACH(link, m->links, i) {
  60                 char *p;
  61
  62                 p = link_bus_path(link);
  63                 if (!p)
  64                         return -ENOMEM;
  65
  66                 l[c++] = p;
  67         }
  68
  69         l[c] = NULL;
  70         *nodes = TAKE_PTR(l);
  71
  72         return 1;
  73 }
  74
  75 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
  76         _cleanup_free_ char *identifier = NULL;
  77         Manager *m = userdata;
  78         Link *link;
  79         int ifindex, r;
  80
  81         assert(bus);
  82         assert(path);
  83         assert(interface);
  84         assert(m);
  85         assert(found);
  86
  87         r = sd_bus_path_decode(path, "/org/freedesktop/network1/link", &identifier);
  88         if (r <= 0)
  89                 return 0;
  90
  91         r = parse_ifindex(identifier, &ifindex);
  92         if (r < 0)
  93                 return 0;
  94
  95         r = link_get(m, ifindex, &link);
  96         if (r < 0)
  97                 return 0;
  98
  99         *found = link;
 100
 101         return 1;
 102 }
 103
 104 int link_send_changed(Link *link, const char *property, ...) {
 105         _cleanup_free_ char *p = NULL;
 106         char **l;
 107
 108         assert(link);
 109         assert(link->manager);
 110
 111         if (!link->manager->bus)
 112                 return 0; /* replace with assert when we have kdbus */
 113
 114         l = strv_from_stdarg_alloca(property);
 115
 116         p = link_bus_path(link);
 117         if (!p)
 118                 return -ENOMEM;
 119
 120         return sd_bus_emit_properties_changed_strv(
 121                         link->manager->bus,
 122                         p,
 123                         "org.freedesktop.network1.Link",
 124                         l);
 125 }