56cd007ab8
Similar to DHCP, the IPv4LL library user can decide to free the LL client any time the callback is called. Guard against freeing the LL client in the callback by introducing proper reference counting. Also update code using the IPv4LL library to properly handle a returned NULL from the notify and stop functions if the IPv4LL client was freed.
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#ifndef foosdipv4llfoo
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#define foosdipv4llfoo
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/***
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This file is part of systemd.
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Copyright (C) 2014 Axis Communications AB. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdbool.h>
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#include <netinet/in.h>
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#include <net/ethernet.h>
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#include "sd-event.h"
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enum {
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IPV4LL_EVENT_STOP = 0,
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IPV4LL_EVENT_BIND = 1,
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IPV4LL_EVENT_CONFLICT = 2,
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};
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typedef struct sd_ipv4ll sd_ipv4ll;
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typedef void (*sd_ipv4ll_cb_t)(sd_ipv4ll *ll, int event, void *userdata);
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int sd_ipv4ll_detach_event(sd_ipv4ll *ll);
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int sd_ipv4ll_attach_event(sd_ipv4ll *ll, sd_event *event, int priority);
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int sd_ipv4ll_get_address(sd_ipv4ll *ll, struct in_addr *address);
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int sd_ipv4ll_set_callback(sd_ipv4ll *ll, sd_ipv4ll_cb_t cb, void *userdata);
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int sd_ipv4ll_set_mac(sd_ipv4ll *ll, const struct ether_addr *addr);
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int sd_ipv4ll_set_index(sd_ipv4ll *ll, int interface_index);
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int sd_ipv4ll_set_address_seed(sd_ipv4ll *ll, uint8_t seed[8]);
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bool sd_ipv4ll_is_running(sd_ipv4ll *ll);
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int sd_ipv4ll_start(sd_ipv4ll *ll);
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int sd_ipv4ll_stop(sd_ipv4ll *ll);
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sd_ipv4ll *sd_ipv4ll_ref(sd_ipv4ll *ll);
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sd_ipv4ll *sd_ipv4ll_unref(sd_ipv4ll *ll);
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int sd_ipv4ll_new (sd_ipv4ll **ret);
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#endif
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