125 lines
4.9 KiB
C
125 lines
4.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#ifndef foosdresolvehfoo
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#define foosdresolvehfoo
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/***
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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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/* 'struct addrinfo' needs _GNU_SOURCE */
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <inttypes.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include "sd-event.h"
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#include "_sd-common.h"
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_SD_BEGIN_DECLARATIONS;
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/* An opaque sd-resolve session structure */
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typedef struct sd_resolve sd_resolve;
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/* An opaque sd-resolve query structure */
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typedef struct sd_resolve_query sd_resolve_query;
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/* A callback on completion */
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typedef int (*sd_resolve_getaddrinfo_handler_t)(sd_resolve_query *q, int ret, const struct addrinfo *ai, void *userdata);
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typedef int (*sd_resolve_getnameinfo_handler_t)(sd_resolve_query *q, int ret, const char *host, const char *serv, void *userdata);
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typedef _sd_destroy_t sd_resolve_destroy_t;
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enum {
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SD_RESOLVE_GET_HOST = 1 << 0,
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SD_RESOLVE_GET_SERVICE = 1 << 1,
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SD_RESOLVE_GET_BOTH = SD_RESOLVE_GET_HOST | SD_RESOLVE_GET_SERVICE,
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};
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int sd_resolve_default(sd_resolve **ret);
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/* Allocate a new sd-resolve session. */
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int sd_resolve_new(sd_resolve **ret);
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/* Free a sd-resolve session. This destroys all attached
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* sd_resolve_query objects automatically. */
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sd_resolve* sd_resolve_unref(sd_resolve *resolve);
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sd_resolve* sd_resolve_ref(sd_resolve *resolve);
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/* Return the UNIX file descriptor to poll() for events on. Use this
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* function to integrate sd-resolve with your custom main loop. */
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int sd_resolve_get_fd(sd_resolve *resolve);
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/* Return the poll() events (a combination of flags like POLLIN,
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* POLLOUT, ...) to check for. */
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int sd_resolve_get_events(sd_resolve *resolve);
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/* Return the poll() timeout to pass. Returns (uint64_t) -1 as
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* timeout if no timeout is needed. */
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int sd_resolve_get_timeout(sd_resolve *resolve, uint64_t *timeout_usec);
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/* Process pending responses. After this function is called, you can
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* get the next completed query object(s) using
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* sd_resolve_get_next(). */
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int sd_resolve_process(sd_resolve *resolve);
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/* Wait for a resolve event to complete. */
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int sd_resolve_wait(sd_resolve *resolve, uint64_t timeout_usec);
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int sd_resolve_get_tid(sd_resolve *resolve, pid_t *tid);
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int sd_resolve_attach_event(sd_resolve *resolve, sd_event *e, int64_t priority);
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int sd_resolve_detach_event(sd_resolve *resolve);
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sd_event *sd_resolve_get_event(sd_resolve *resolve);
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/* Issue a name-to-address query on the specified session. The
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* arguments are compatible with those of libc's
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* getaddrinfo(3). The function returns a new query object. When the
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* query is completed, you may retrieve the results using
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* sd_resolve_getaddrinfo_done(). */
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int sd_resolve_getaddrinfo(sd_resolve *resolve, sd_resolve_query **q, const char *node, const char *service, const struct addrinfo *hints, sd_resolve_getaddrinfo_handler_t callback, void *userdata);
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/* Issue an address-to-name query on the specified session. The
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* arguments are compatible with those of libc's
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* getnameinfo(3). The function returns a new query object. When the
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* query is completed, you may retrieve the results using
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* sd_resolve_getnameinfo_done(). Set gethost (resp. getserv) to non-zero
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* if you want to query the hostname (resp. the service name). */
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int sd_resolve_getnameinfo(sd_resolve *resolve, sd_resolve_query **q, const struct sockaddr *sa, socklen_t salen, int flags, uint64_t get, sd_resolve_getnameinfo_handler_t callback, void *userdata);
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sd_resolve_query *sd_resolve_query_ref(sd_resolve_query *q);
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sd_resolve_query *sd_resolve_query_unref(sd_resolve_query *q);
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/* Returns non-zero when the query operation specified by q has been completed. */
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int sd_resolve_query_is_done(sd_resolve_query *q);
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void *sd_resolve_query_get_userdata(sd_resolve_query *q);
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void *sd_resolve_query_set_userdata(sd_resolve_query *q, void *userdata);
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int sd_resolve_query_get_destroy_callback(sd_resolve_query *q, sd_resolve_destroy_t *destroy_callback);
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int sd_resolve_query_set_destroy_callback(sd_resolve_query *q, sd_resolve_destroy_t destroy_callback);
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int sd_resolve_query_get_floating(sd_resolve_query *q);
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int sd_resolve_query_set_floating(sd_resolve_query *q, int b);
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sd_resolve *sd_resolve_query_get_resolve(sd_resolve_query *q);
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_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_resolve, sd_resolve_unref);
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_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_resolve_query, sd_resolve_query_unref);
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_SD_END_DECLARATIONS;
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#endif
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