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 "alloc-util.h"
  23 #include "bus-util.h"
  24 #include "networkd-link.h"
  25 #include "networkd.h"
  26 #include "parse-util.h"
  27 #include "strv.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         unsigned c = 0;
  63         Link *link;
  64         Iterator i;
  65
  66         assert(bus);
  67         assert(path);
  68         assert(m);
  69         assert(nodes);
  70
  71         l = new0(char*, hashmap_size(m->links) + 1);
  72         if (!l)
  73                 return -ENOMEM;
  74
  75         HASHMAP_FOREACH(link, m->links, i) {
  76                 char *p;
  77
  78                 p = link_bus_path(link);
  79                 if (!p)
  80                         return -ENOMEM;
  81
  82                 l[c++] = p;
  83         }
  84
  85         l[c] = NULL;
  86         *nodes = l;
  87         l = NULL;
  88
  89         return 1;
  90 }
  91
  92 int link_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
  93         _cleanup_free_ char *identifier = NULL;
  94         Manager *m = userdata;
  95         Link *link;
  96         int ifindex, r;
  97
  98         assert(bus);
  99         assert(path);
 100         assert(interface);
 101         assert(m);
 102         assert(found);
 103
 104         r = sd_bus_path_decode(path, "/org/freedesktop/network1/link", &identifier);
 105         if (r <= 0)
 106                 return 0;
 107
 108         r = parse_ifindex(identifier, &ifindex);
 109         if (r < 0)
 110                 return 0;
 111
 112         r = link_get(m, ifindex, &link);
 113         if (r < 0)
 114                 return 0;
 115
 116         *found = link;
 117
 118         return 1;
 119 }
 120
 121 int link_send_changed(Link *link, const char *property, ...) {
 122         _cleanup_free_ char *p = NULL;
 123         char **l;
 124
 125         assert(link);
 126         assert(link->manager);
 127
 128         if (!link->manager->bus)
 129                 return 0; /* replace with assert when we have kdbus */
 130
 131         l = strv_from_stdarg_alloca(property);
 132
 133         p = link_bus_path(link);
 134         if (!p)
 135                 return -ENOMEM;
 136
 137         return sd_bus_emit_properties_changed_strv(
 138                         link->manager->bus,
 139                         p,
 140                         "org.freedesktop.network1.Link",
 141                         l);
 142 }