src/network/networkd-link-bus.c

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