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/* SPDX-License-Identifier: LGPL-2.1+ */
#ifndef foosdnetworkhfoo
#define foosdnetworkhfoo
/***
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <inttypes.h>
#include <sys/types.h>
#include "_sd-common.h"
/*
* A few points:
*
* Instead of returning an empty string array or empty integer array, we
* may return NULL.
*
* Free the data the library returns with libc free(). String arrays
* are NULL terminated, and you need to free the array itself in
* addition to the strings contained.
*
* We return error codes as negative errno, kernel-style. On success, we
* return 0 or positive.
*
* These functions access data in /run. This is a virtual file system;
* therefore, accesses are relatively cheap.
*
* See sd-network(3) for more information.
*/
_SD_BEGIN_DECLARATIONS;
/* Get overall operational state
* Possible states: down, up, dormant, carrier, degraded, routable
* Possible return codes:
* -ENODATA: networkd is not aware of any links
*/
int sd_network_get_operational_state(char **state);
int sd_network_get_carrier_state(char **state);
int sd_network_get_address_state(char **state);
/* Get DNS entries for all links. These are string representations of
* IP addresses */
int sd_network_get_dns(char ***dns);
/* Get NTP entries for all links. These are domain names or string
* representations of IP addresses */
int sd_network_get_ntp(char ***ntp);
/* Get the search domains for all links. */
int sd_network_get_search_domains(char ***domains);
/* Get the search domains for all links. */
int sd_network_get_route_domains(char ***domains);
/* Get setup state from ifindex.
* Possible states:
* pending: udev is still processing the link, we don't yet know if we will manage it
* failed: networkd failed to manage the link
* configuring: in the process of retrieving configuration or configuring the link
* configured: link configured successfully
* unmanaged: networkd is not handling the link
* linger: the link is gone, but has not yet been dropped by networkd
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_setup_state(int ifindex, char **state);
/* Get operational state from ifindex.
* Possible states:
* off: the device is powered down
* no-carrier: the device is powered up, but it does not yet have a carrier
* dormant: the device has a carrier, but is not yet ready for normal traffic
* carrier: the link has a carrier
* degraded: the link has carrier and addresses valid on the local link configured
* routable: the link has carrier and routable address configured
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_operational_state(int ifindex, char **state);
int sd_network_link_get_required_operstate_for_online(int ifindex, char **state);
int sd_network_link_get_carrier_state(int ifindex, char **state);
int sd_network_link_get_address_state(int ifindex, char **state);
/* Indicates whether the network is relevant to being online.
* Possible return codes:
* 0: the connection is not required
* 1: the connection is required to consider the system online
* <0: networkd is not aware of the link
*/
int sd_network_link_get_required_for_online(int ifindex);
/* Get path to .network file applied to link */
int sd_network_link_get_network_file(int ifindex, char **filename);
/* Get DNS entries for a given link. These are string representations of
* IP addresses */
int sd_network_link_get_dns(int ifindex, char ***ret);
/* Get DHCP4 address for a given link. This is string representations of
* IPv4 address */
int sd_network_link_get_dhcp4_address(int ifindex, char **ret);
/* Get NTP entries for a given link. These are domain names or string
* representations of IP addresses */
int sd_network_link_get_ntp(int ifindex, char ***ret);
/* Indicates whether or not LLMNR should be enabled for the link
* Possible levels of support: yes, no, resolve
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_llmnr(int ifindex, char **llmnr);
/* Indicates whether or not MulticastDNS should be enabled for the
* link.
* Possible levels of support: yes, no, resolve
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_mdns(int ifindex, char **mdns);
/* Indicates whether or not DNS-over-TLS should be enabled for the
* link.
* Possible levels of support: yes, no, opportunistic
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_dns_over_tls(int ifindex, char **dns_over_tls);
/* Indicates whether or not DNSSEC should be enabled for the link
* Possible levels of support: yes, no, allow-downgrade
* Possible return codes:
* -ENODATA: networkd is not aware of the link
*/
int sd_network_link_get_dnssec(int ifindex, char **dnssec);
/* Returns the list of per-interface DNSSEC negative trust anchors
* Possible return codes:
* -ENODATA: networkd is not aware of the link, or has no such data
*/
int sd_network_link_get_dnssec_negative_trust_anchors(int ifindex, char ***nta);
/* Get the search DNS domain names for a given link. */
int sd_network_link_get_search_domains(int ifindex, char ***domains);
/* Get the route DNS domain names for a given link. */
int sd_network_link_get_route_domains(int ifindex, char ***domains);
/* Get the sip servers for a given link. */
int sd_network_link_get_sip_servers(int ifindex, char ***sip);
/* Get whether this link shall be used as 'default route' for DNS queries */
int sd_network_link_get_dns_default_route(int ifindex);
/* Get the carrier interface indexes to which current link is bound to. */
int sd_network_link_get_carrier_bound_to(int ifindex, int **ifindexes);
/* Get the CARRIERS that are bound to current link. */
int sd_network_link_get_carrier_bound_by(int ifindex, int **ifindexes);
/* Get the timezone that was learnt on a specific link. */
int sd_network_link_get_timezone(int ifindex, char **timezone);
/* Monitor object */
typedef struct sd_network_monitor sd_network_monitor;
/* Create a new monitor. Category must be NULL, "links" or "leases". */
int sd_network_monitor_new(sd_network_monitor **ret, const char *category);
/* Destroys the passed monitor. Returns NULL. */
sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m);
/* Flushes the monitor */
int sd_network_monitor_flush(sd_network_monitor *m);
/* Get FD from monitor */
int sd_network_monitor_get_fd(sd_network_monitor *m);
/* Get poll() mask to monitor */
int sd_network_monitor_get_events(sd_network_monitor *m);
/* Get timeout for poll(), as usec value relative to CLOCK_MONOTONIC's epoch */
int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_network_monitor, sd_network_monitor_unref);
_SD_END_DECLARATIONS;
#endif
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