4afd3348c7
GLIB has recently started to officially support the gcc cleanup
attribute in its public API, hence let's do the same for our APIs.
With this patch we'll define an xyz_unrefp() call for each public
xyz_unref() call, to make it easy to use inside a
__attribute__((cleanup())) expression. Then, all code is ported over to
make use of this.
The new calls are also documented in the man pages, with examples how to
use them (well, I only added docs where the _unref() call itself already
had docs, and the examples, only cover sd_bus_unrefp() and
sd_event_unrefp()).
This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we
tend to call our destructors these days.
Note that this defines no public macro that wraps gcc's attribute and
makes it easier to use. While I think it's our duty in the library to
make our stuff easy to use, I figure it's not our duty to make gcc's own
features easy to use on its own. Most likely, client code which wants to
make use of this should define its own:
#define _cleanup_(function) __attribute__((cleanup(function)))
Or similar, to make the gcc feature easier to use.
Making this logic public has the benefit that we can remove three header
files whose only purpose was to define these functions internally.
See #2008.
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright (C) 2013 Intel Corporation. All rights reserved.
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Copyright (C) 2014 Tom Gundersen
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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 <stdint.h>
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#include <linux/if_packet.h>
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#include "sd-dhcp-client.h"
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#include "dhcp-protocol.h"
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#include "list.h"
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#include "util.h"
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struct sd_dhcp_route {
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struct in_addr dst_addr;
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struct in_addr gw_addr;
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unsigned char dst_prefixlen;
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};
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struct sd_dhcp_raw_option {
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LIST_FIELDS(struct sd_dhcp_raw_option, options);
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uint8_t tag;
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uint8_t length;
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void *data;
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};
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struct sd_dhcp_lease {
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unsigned n_ref;
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/* each 0 if unset */
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uint32_t t1;
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uint32_t t2;
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uint32_t lifetime;
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/* each 0 if unset */
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be32_t address;
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be32_t server_address;
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be32_t router;
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be32_t next_server;
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bool have_subnet_mask;
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be32_t subnet_mask;
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bool have_broadcast;
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be32_t broadcast;
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struct in_addr *dns;
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size_t dns_size;
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struct in_addr *ntp;
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size_t ntp_size;
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struct sd_dhcp_route *static_route;
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size_t static_route_size, static_route_allocated;
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uint16_t mtu; /* 0 if unset */
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char *domainname;
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char *hostname;
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char *root_path;
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void *client_id;
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size_t client_id_len;
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void *vendor_specific;
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size_t vendor_specific_len;
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char *timezone;
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LIST_HEAD(struct sd_dhcp_raw_option, private_options);
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};
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int dhcp_lease_new(sd_dhcp_lease **ret);
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int dhcp_lease_parse_options(uint8_t code, uint8_t len, const void *option, void *userdata);
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int dhcp_lease_insert_private_option(sd_dhcp_lease *lease, uint8_t tag, const void *data, uint8_t len);
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int dhcp_lease_set_default_subnet_mask(sd_dhcp_lease *lease);
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int dhcp_lease_set_client_id(sd_dhcp_lease *lease, const void *client_id, size_t client_id_len);
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int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file);
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int dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file);
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