src/network/networkd-link-bus.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2015 Tom Gundersen
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include "bus-util.h"
  23 #include "strv.h"
  24
  25 #include "networkd-link.h"
  26 #include "networkd.h"
  27 #include "parse-util.h"
  28
  29 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_operational_state, link_operstate, LinkOperationalState);
  30 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_administrative_state, link_state, LinkState);
  31
  32 const sd_bus_vtable link_vtable[] = {
  33         SD_BUS_VTABLE_START(0),
  34
  35         SD_BUS_PROPERTY("OperationalState", "s", property_get_operational_state, offsetof(Link, operstate), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  36         SD_BUS_PROPERTY("AdministrativeState", "s", property_get_administrative_state, offsetof(Link, state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  37
  38         SD_BUS_VTABLE_END
  39 };
  40
  41 static char *link_bus_path(Link *link) {
  42         _cleanup_free_ char *ifindex = NULL;
  43         char *p;
  44         int r;
  45
  46         assert(link);
  47         assert(link->ifindex > 0);
  48
  49         if (asprintf(&ifindex, "%d", link->ifindex) < 0)
  50                 return NULL;
  51
  52         r = sd_bus_path_encode("/org/freedesktop/network1/link", ifindex, &p);
  53         if (r < 0)
  54                 return NULL;
  55
  56         return p;
  57 }
  58
  59 int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
  60         _cleanup_strv_free_ char **l = NULL;
  61         Manager *m = userdata;
  62         Link *link;
  63         Iterator i;
  64         int r;
  65
  66         assert(bus);
  67         assert(path);
  68         assert(m);
  69         assert(nodes);
  70
  71         HASHMAP_FOREACH(link, m->links, i) {
  72                 char *p;
  73
  74                 p = link_bus_path(link);
  75                 if (!p)
  76                         return -ENOMEM;
  77
  78                 r = strv_consume(&l, p);
  79                 if (r < 0)
  80                         return r;
  81         }
  82
  83         *nodes = l;
  84         l = NULL;
  85
  86         return 1;
  87 }
  88
  89 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
  90         _cleanup_free_ char *identifier = NULL;
  91         Manager *m = userdata;
  92         Link *link;
  93         int ifindex, r;
  94
  95         assert(bus);
  96         assert(path);
  97         assert(interface);
  98         assert(m);
  99         assert(found);
 100
 101         r = sd_bus_path_decode(path, "/org/freedesktop/network1/link", &identifier);
 102         if (r < 0)
 103                 return 0;
 104
 105         r = safe_atoi(identifier, &ifindex);
 106         if (r < 0)
 107                 return 0;
 108
 109         r = link_get(m, ifindex, &link);
 110         if (r < 0)
 111                 return 0;
 112
 113         *found = link;
 114
 115         return 1;
 116 }
 117
 118 int link_send_changed(Link *link, const char *property, ...) {
 119         _cleanup_free_ char *p = NULL;
 120         char **l;
 121
 122         assert(link);
 123         assert(link->manager);
 124
 125         if (!link->manager->bus)
 126                 return 0; /* replace with assert when we have kdbus */
 127
 128         l = strv_from_stdarg_alloca(property);
 129
 130         p = link_bus_path(link);
 131         if (!p)
 132                 return -ENOMEM;
 133
 134         return sd_bus_emit_properties_changed_strv(
 135                         link->manager->bus,
 136                         p,
 137                         "org.freedesktop.network1.Link",
 138                         l);
 139 }