115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#ifndef foosdnetworkhfoo
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#define foosdnetworkhfoo
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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Copyright 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 <sys/types.h>
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#include <inttypes.h>
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#include "sd-dhcp-lease.h"
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#include "_sd-common.h"
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/*
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* A few points:
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*
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* Instead of returning an empty string array or empty integer array, we
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* may return NULL.
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*
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* Free the data the library returns with libc free(). String arrays
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* are NULL terminated, and you need to free the array itself in
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* addition to the strings contained.
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*
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* We return error codes as negative errno, kernel-style. On success, we
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* return 0 or positive.
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*
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* These functions access data in /run. This is a virtual file system;
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* therefore, accesses are relatively cheap.
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*
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* See sd-network(3) for more information.
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*/
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_SD_BEGIN_DECLARATIONS;
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/* Get state from ifindex.
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* Possible states: failed, configuring, configured, unmanaged
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* Possible return codes:
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* -ENODATA: networkd is not aware of the link
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* -EBUSY: udev is still processing the link, networkd does not yet know if it will manage it
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*/
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int sd_network_get_link_state(int ifindex, char **state);
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/* Get operatinal state from ifindex.
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* Possible states: unknown, dormant, carrier, degraded, routable
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* Possible return codes:
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* -ENODATA: networkd is not aware of the link
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*/
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int sd_network_get_link_operational_state(int ifindex, char **state);
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/* Get overall opeartional state
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* Possible states: unknown, dormant, carrier, degraded, routable
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* Possible return codes:
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* -ENODATA: networkd is not aware of any links
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*/
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int sd_network_get_operational_state(char **state);
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/* Get DHCPv4 lease from ifindex. */
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int sd_network_get_dhcp_lease(int ifindex, sd_dhcp_lease **ret);
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/* Returns true if link is configured to respect DNS entries received by DHCP */
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int sd_network_dhcp_use_dns(int ifindex);
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/* Returns true if link is configured to respect NTP entries received by DHCP */
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int sd_network_dhcp_use_ntp(int ifindex);
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/* Get IPv4 DNS entries statically configured for the link */
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int sd_network_get_dns(int ifindex, struct in_addr **addr);
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/* Get IPv6 DNS entries statically configured for the link */
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int sd_network_get_dns6(int ifindex, struct in6_addr **addr);
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/* Monitor object */
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typedef struct sd_network_monitor sd_network_monitor;
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/* Create a new monitor. Category must be NULL, "links" or "leases". */
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int sd_network_monitor_new(sd_network_monitor **ret, const char *category);
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/* Destroys the passed monitor. Returns NULL. */
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sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m);
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/* Flushes the monitor */
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int sd_network_monitor_flush(sd_network_monitor *m);
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/* Get FD from monitor */
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int sd_network_monitor_get_fd(sd_network_monitor *m);
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/* Get poll() mask to monitor */
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int sd_network_monitor_get_events(sd_network_monitor *m);
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/* Get timeout for poll(), as usec value relative to CLOCK_MONOTONIC's epoch */
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int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec);
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_SD_END_DECLARATIONS;
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#endif
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