[lttng-tools.git] / src / common / sessiond-comm / inet6.c

/*
 * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#define _LGPL_SOURCE
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <common/compat/time.h>
#include <poll.h>

#include <common/common.h>
#include <common/time.h>
#include <common/compat/errno.h>

#include "inet6.h"

#define RECONNECT_DELAY	200	/* ms */

/*
 * INET protocol operations.
 */
static const struct lttcomm_proto_ops inet6_ops = {
	.bind = lttcomm_bind_inet6_sock,
	.close = lttcomm_close_inet6_sock,
	.connect = lttcomm_connect_inet6_sock,
	.accept = lttcomm_accept_inet6_sock,
	.listen = lttcomm_listen_inet6_sock,
	.recvmsg = lttcomm_recvmsg_inet6_sock,
	.sendmsg = lttcomm_sendmsg_inet6_sock,
};

/*
 * Creates an PF_INET socket.
 */
int lttcomm_create_inet6_sock(struct lttcomm_sock *sock, int type, int proto)
{
	int val = 1, ret;
	unsigned long timeout;

	/* Create server socket */
	if ((sock->fd = socket(PF_INET6, type, proto)) < 0) {
		PERROR("socket inet6");
		goto error;
	}

	sock->ops = &inet6_ops;

	/*
	 * Set socket option to reuse the address.
	 */
	ret = setsockopt(sock->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int));
	if (ret < 0) {
		PERROR("setsockopt inet6");
		goto error;
	}
	timeout = lttcomm_get_network_timeout();
	if (timeout) {
		ret = lttcomm_setsockopt_rcv_timeout(sock->fd, timeout);
		if (ret) {
			goto error;
		}
		ret = lttcomm_setsockopt_snd_timeout(sock->fd, timeout);
		if (ret) {
			goto error;
		}
	}

	return 0;

error:
	return -1;
}

/*
 * Bind socket and return.
 */
int lttcomm_bind_inet6_sock(struct lttcomm_sock *sock)
{
	struct sockaddr_in6 sockaddr = sock->sockaddr.addr.sin6;
	return bind(sock->fd, &sockaddr, sizeof(sockaddr));
}

static
int connect_no_timeout(struct lttcomm_sock *sock)
{
	struct sockaddr_in6 sockaddr = sock->sockaddr.addr.sin6;
	return connect(sock->fd, &sockaddr, sizeof(sockaddr));
}

static
int connect_with_timeout(struct lttcomm_sock *sock)
{
	unsigned long timeout = lttcomm_get_network_timeout();
	int ret, flags, connect_ret;
	struct timespec orig_time, cur_time;
	unsigned long diff_ms;
	struct sockaddr_in6 sockaddr;

	ret = fcntl(sock->fd, F_GETFL, 0);
	if (ret == -1) {
		PERROR("fcntl");
		return -1;
	}
	flags = ret;

	/* Set socket to nonblock */
	ret = fcntl(sock->fd, F_SETFL, flags | O_NONBLOCK);
	if (ret == -1) {
		PERROR("fcntl");
		return -1;
	}

	ret = lttng_clock_gettime(CLOCK_MONOTONIC, &orig_time);
	if (ret == -1) {
		PERROR("clock_gettime");
		return -1;
	}

	sockaddr = sock->sockaddr.addr.sin6;
	connect_ret = connect(sock->fd, &sockaddr, sizeof(sockaddr));
	if (connect_ret == -1 && errno != EAGAIN && errno != EWOULDBLOCK &&
			errno != EINPROGRESS) {
		goto error;
	} else if (!connect_ret) {
		/* Connect succeeded */
		goto success;
	}

	DBG("Asynchronous connect for sock %d, performing polling with"
			" timeout: %lums", sock->fd, timeout);

	/*
	 * Perform poll loop following EINPROGRESS recommendation from
	 * connect(2) man page.
	 */
	do {
		struct pollfd fds;

		fds.fd = sock->fd;
		fds.events = POLLOUT;
		fds.revents = 0;
		ret = poll(&fds, 1, RECONNECT_DELAY);
		if (ret < 0) {
			goto error;
		} else if (ret > 0) {
			int optval;
			socklen_t optval_len = sizeof(optval);

			if (!(fds.revents & POLLOUT)) {
				/* Either hup or error */
				errno = EPIPE;
				goto error;
			}
			/* got something */
			ret = getsockopt(sock->fd, SOL_SOCKET,
				SO_ERROR, &optval, &optval_len);
			if (ret) {
				PERROR("getsockopt");
				goto error;
			}
			if (!optval) {
				connect_ret = 0;
				goto success;
			} else {
				/* Get actual connect() errno from opt_val */
				errno = optval;
				goto error;
			}
		}
		/* ret == 0: timeout */
		ret = lttng_clock_gettime(CLOCK_MONOTONIC, &cur_time);
		if (ret == -1) {
			PERROR("clock_gettime");
			connect_ret = ret;
			goto error;
		}
		if (timespec_to_ms(timespec_abs_diff(cur_time, orig_time), &diff_ms) < 0) {
			ERR("timespec_to_ms input overflows milliseconds output");
			connect_ret = -1;
			goto error;
		}
	} while (diff_ms < timeout);

	/* Timeout */
	errno = ETIMEDOUT;
	connect_ret = -1;

success:
	/* Restore initial flags */
	ret = fcntl(sock->fd, F_SETFL, flags);
	if (ret == -1) {
		PERROR("fcntl");
		/* Continue anyway */
	}
error:
	return connect_ret;
}

/*
 * Connect PF_INET socket.
 */
int lttcomm_connect_inet6_sock(struct lttcomm_sock *sock)
{
	int ret, closeret;

	if (lttcomm_get_network_timeout()) {
		ret = connect_with_timeout(sock);
	} else {
		ret = connect_no_timeout(sock);
	}
	if (ret < 0) {
		PERROR("connect inet6");
		goto error_connect;
	}

	return ret;

error_connect:
	closeret = close(sock->fd);
	if (closeret) {
		PERROR("close inet6");
	}

	return ret;
}

/*
 * Do an accept(2) on the sock and return the new lttcomm socket. The socket
 * MUST be bind(2) before.
 */
struct lttcomm_sock *lttcomm_accept_inet6_sock(struct lttcomm_sock *sock)
{
	int new_fd;
	socklen_t len;
	struct lttcomm_sock *new_sock;
	struct sockaddr_in6 new_addr = {};

	if (sock->proto == LTTCOMM_SOCK_UDP) {
		/*
		 * accept(2) does not exist for UDP so simply return the passed socket.
		 */
		new_sock = sock;
		goto end;
	}

	new_sock = lttcomm_alloc_sock(sock->proto);
	if (new_sock == NULL) {
		goto error;
	}

	len = sizeof(new_addr);

	/* Blocking call */
	new_fd = accept(sock->fd, (struct sockaddr *) &new_addr, &len);
	if (new_fd < 0) {
		PERROR("accept inet6");
		goto error;
	}
	new_sock->sockaddr.addr.sin6 = new_addr;
	new_sock->fd = new_fd;
	new_sock->ops = &inet6_ops;

end:
	return new_sock;

error:
	free(new_sock);
	return NULL;
}

/*
 * Make the socket listen using LTTNG_SESSIOND_COMM_MAX_LISTEN.
 */
int lttcomm_listen_inet6_sock(struct lttcomm_sock *sock, int backlog)
{
	int ret;

	if (sock->proto == LTTCOMM_SOCK_UDP) {
		/* listen(2) does not exist for UDP so simply return success. */
		ret = 0;
		goto end;
	}

	/* Default listen backlog */
	if (backlog <= 0) {
		backlog = LTTNG_SESSIOND_COMM_MAX_LISTEN;
	}

	ret = listen(sock->fd, backlog);
	if (ret < 0) {
		PERROR("listen inet6");
	}

end:
	return ret;
}

/*
 * Receive data of size len in put that data into the buf param. Using recvmsg
 * API.
 *
 * Return the size of received data.
 */
ssize_t lttcomm_recvmsg_inet6_sock(struct lttcomm_sock *sock, void *buf,
		size_t len, int flags)
{
	struct msghdr msg;
	struct iovec iov[1];
	ssize_t ret = -1;
	size_t len_last;
	struct sockaddr_in6 addr = sock->sockaddr.addr.sin6;

	memset(&msg, 0, sizeof(msg));

	iov[0].iov_base = buf;
	iov[0].iov_len = len;
	msg.msg_iov = iov;
	msg.msg_iovlen = 1;

	msg.msg_name = (struct sockaddr *) &addr;
	msg.msg_namelen = sizeof(sock->sockaddr.addr.sin6);

	do {
		len_last = iov[0].iov_len;
		ret = recvmsg(sock->fd, &msg, flags);
		if (ret > 0) {
			if (flags & MSG_DONTWAIT) {
				goto end;
			}
			iov[0].iov_base += ret;
			iov[0].iov_len -= ret;
			LTTNG_ASSERT(ret <= len_last);
		}
	} while ((ret > 0 && ret < len_last) || (ret < 0 && errno == EINTR));
	if (ret < 0) {
		PERROR("recvmsg inet");
	} else if (ret > 0) {
		ret = len;
	}
	/* Else ret = 0 meaning an orderly shutdown. */
end:
	return ret;
}

/*
 * Send buf data of size len. Using sendmsg API.
 *
 * Return the size of sent data.
 */
ssize_t lttcomm_sendmsg_inet6_sock(struct lttcomm_sock *sock, const void *buf,
		size_t len, int flags)
{
	struct msghdr msg;
	struct iovec iov[1];
	ssize_t ret = -1;

	memset(&msg, 0, sizeof(msg));

	iov[0].iov_base = (void *) buf;
	iov[0].iov_len = len;
	msg.msg_iov = iov;
	msg.msg_iovlen = 1;

	switch (sock->proto) {
	case LTTCOMM_SOCK_UDP:
	{
		struct sockaddr_in6 addr = sock->sockaddr.addr.sin6;

		msg.msg_name = (struct sockaddr *) &addr;
		msg.msg_namelen = sizeof(sock->sockaddr.addr.sin6);
		break;
	}
	default:
		break;
	}

	do {
		ret = sendmsg(sock->fd, &msg, flags);
	} while (ret < 0 && errno == EINTR);
	if (ret < 0) {
		/*
		 * Only warn about EPIPE when quiet mode is deactivated.
		 * We consider EPIPE as expected.
		 */
		if (errno != EPIPE || !lttng_opt_quiet) {
			PERROR("sendmsg inet6");
		}
	}

	return ret;
}

/*
 * Shutdown cleanly and close.
 */
int lttcomm_close_inet6_sock(struct lttcomm_sock *sock)
{
	int ret;

	/* Don't try to close an invalid marked socket */
	if (sock->fd == -1) {
		return 0;
	}

	ret = close(sock->fd);
	if (ret) {
		PERROR("close inet6");
	}

	/* Mark socket */
	sock->fd = -1;

	return ret;
}
Commit	Line	Data
6364a07a	1	/*
ab5be9fa	2	* Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
6364a07a	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
6364a07a	5	*
6364a07a DG	6	*/
6364a07a DG	7
6c1c0768	8	#define _LGPL_SOURCE
6364a07a DG	9	#include <limits.h>
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/stat.h>
	14	#include <sys/types.h>
	15	#include <unistd.h>
a655f4cf	16	#include <fcntl.h>
389fbf04	17	#include <common/compat/time.h>
a655f4cf	18	#include <poll.h>
6364a07a	19
90e535ef	20	#include <common/common.h>
395d6b02	21	#include <common/time.h>
edf4b93e	22	#include <common/compat/errno.h>
6364a07a DG	23
	24	#include "inet6.h"
	25
a655f4cf MD	26	#define RECONNECT_DELAY 200 /* ms */
a655f4cf MD	27
6364a07a DG	28	/*
	29	* INET protocol operations.
	30	*/
	31	static const struct lttcomm_proto_ops inet6_ops = {
	32	.bind = lttcomm_bind_inet6_sock,
	33	.close = lttcomm_close_inet6_sock,
	34	.connect = lttcomm_connect_inet6_sock,
	35	.accept = lttcomm_accept_inet6_sock,
	36	.listen = lttcomm_listen_inet6_sock,
	37	.recvmsg = lttcomm_recvmsg_inet6_sock,
	38	.sendmsg = lttcomm_sendmsg_inet6_sock,
	39	};
	40
	41	/*
	42	* Creates an PF_INET socket.
	43	*/
	44	int lttcomm_create_inet6_sock(struct lttcomm_sock *sock, int type, int proto)
	45	{
de5e9086	46	int val = 1, ret;
783a3b9a	47	unsigned long timeout;
6364a07a DG	48
6364a07a DG	49	/* Create server socket */
7b43086d	50	if ((sock->fd = socket(PF_INET6, type, proto)) < 0) {
6364a07a DG	51	PERROR("socket inet6");
	52	goto error;
	53	}
	54
	55	sock->ops = &inet6_ops;
	56
	57	/*
	58	* Set socket option to reuse the address.
	59	*/
	60	ret = setsockopt(sock->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int));
	61	if (ret < 0) {
	62	PERROR("setsockopt inet6");
	63	goto error;
	64	}
783a3b9a MD	65	timeout = lttcomm_get_network_timeout();
	66	if (timeout) {
	67	ret = lttcomm_setsockopt_rcv_timeout(sock->fd, timeout);
	68	if (ret) {
	69	goto error;
	70	}
	71	ret = lttcomm_setsockopt_snd_timeout(sock->fd, timeout);
	72	if (ret) {
	73	goto error;
	74	}
	75	}
6364a07a DG	76
	77	return 0;
	78
	79	error:
	80	return -1;
	81	}
	82
	83	/*
	84	* Bind socket and return.
	85	*/
	86	int lttcomm_bind_inet6_sock(struct lttcomm_sock *sock)
	87	{
7966af57 SM	88	struct sockaddr_in6 sockaddr = sock->sockaddr.addr.sin6;
7966af57 SM	89	return bind(sock->fd, &sockaddr, sizeof(sockaddr));
6364a07a DG	90	}
6364a07a DG	91
a655f4cf MD	92	static
	93	int connect_no_timeout(struct lttcomm_sock *sock)
	94	{
7966af57 SM	95	struct sockaddr_in6 sockaddr = sock->sockaddr.addr.sin6;
7966af57 SM	96	return connect(sock->fd, &sockaddr, sizeof(sockaddr));
a655f4cf MD	97	}
a655f4cf MD	98
a655f4cf MD	99	static
	100	int connect_with_timeout(struct lttcomm_sock *sock)
	101	{
	102	unsigned long timeout = lttcomm_get_network_timeout();
	103	int ret, flags, connect_ret;
	104	struct timespec orig_time, cur_time;
2daf6502	105	unsigned long diff_ms;
7966af57	106	struct sockaddr_in6 sockaddr;
a655f4cf MD	107
	108	ret = fcntl(sock->fd, F_GETFL, 0);
	109	if (ret == -1) {
	110	PERROR("fcntl");
	111	return -1;
	112	}
	113	flags = ret;
	114
	115	/* Set socket to nonblock */
	116	ret = fcntl(sock->fd, F_SETFL, flags \| O_NONBLOCK);
	117	if (ret == -1) {
	118	PERROR("fcntl");
	119	return -1;
	120	}
	121
389fbf04	122	ret = lttng_clock_gettime(CLOCK_MONOTONIC, &orig_time);
a655f4cf MD	123	if (ret == -1) {
	124	PERROR("clock_gettime");
	125	return -1;
	126	}
	127
7966af57 SM	128	sockaddr = sock->sockaddr.addr.sin6;
7966af57 SM	129	connect_ret = connect(sock->fd, &sockaddr, sizeof(sockaddr));
1a65bbb8 JG	130	if (connect_ret == -1 && errno != EAGAIN && errno != EWOULDBLOCK &&
1a65bbb8 JG	131	errno != EINPROGRESS) {
a655f4cf MD	132	goto error;
	133	} else if (!connect_ret) {
	134	/* Connect succeeded */
	135	goto success;
	136	}
	137
48ac9596 JR	138	DBG("Asynchronous connect for sock %d, performing polling with"
	139	" timeout: %lums", sock->fd, timeout);
	140
a655f4cf MD	141	/*
	142	* Perform poll loop following EINPROGRESS recommendation from
	143	* connect(2) man page.
	144	*/
	145	do {
	146	struct pollfd fds;
	147
	148	fds.fd = sock->fd;
	149	fds.events = POLLOUT;
	150	fds.revents = 0;
	151	ret = poll(&fds, 1, RECONNECT_DELAY);
	152	if (ret < 0) {
	153	goto error;
	154	} else if (ret > 0) {
	155	int optval;
	156	socklen_t optval_len = sizeof(optval);
	157
	158	if (!(fds.revents & POLLOUT)) {
	159	/* Either hup or error */
	160	errno = EPIPE;
	161	goto error;
	162	}
	163	/* got something */
	164	ret = getsockopt(sock->fd, SOL_SOCKET,
	165	SO_ERROR, &optval, &optval_len);
	166	if (ret) {
48ac9596	167	PERROR("getsockopt");
a655f4cf MD	168	goto error;
	169	}
	170	if (!optval) {
	171	connect_ret = 0;
	172	goto success;
	173	} else {
48ac9596 JR	174	/* Get actual connect() errno from opt_val */
48ac9596 JR	175	errno = optval;
a655f4cf MD	176	goto error;
	177	}
	178	}
	179	/* ret == 0: timeout */
389fbf04	180	ret = lttng_clock_gettime(CLOCK_MONOTONIC, &cur_time);
a655f4cf MD	181	if (ret == -1) {
	182	PERROR("clock_gettime");
	183	connect_ret = ret;
	184	goto error;
	185	}
2daf6502 MD	186	if (timespec_to_ms(timespec_abs_diff(cur_time, orig_time), &diff_ms) < 0) {
	187	ERR("timespec_to_ms input overflows milliseconds output");
	188	connect_ret = -1;
	189	goto error;
	190	}
	191	} while (diff_ms < timeout);
a655f4cf MD	192
	193	/* Timeout */
	194	errno = ETIMEDOUT;
	195	connect_ret = -1;
	196
	197	success:
	198	/* Restore initial flags */
	199	ret = fcntl(sock->fd, F_SETFL, flags);
	200	if (ret == -1) {
	201	PERROR("fcntl");
	202	/* Continue anyway */
	203	}
	204	error:
	205	return connect_ret;
	206	}
	207
6364a07a DG	208	/*
	209	* Connect PF_INET socket.
	210	*/
	211	int lttcomm_connect_inet6_sock(struct lttcomm_sock *sock)
	212	{
	213	int ret, closeret;
	214
a655f4cf MD	215	if (lttcomm_get_network_timeout()) {
	216	ret = connect_with_timeout(sock);
	217	} else {
	218	ret = connect_no_timeout(sock);
	219	}
6364a07a	220	if (ret < 0) {
82c05d47	221	PERROR("connect inet6");
6364a07a DG	222	goto error_connect;
	223	}
	224
	225	return ret;
	226
	227	error_connect:
	228	closeret = close(sock->fd);
	229	if (closeret) {
	230	PERROR("close inet6");
	231	}
	232
	233	return ret;
	234	}
	235
	236	/*
	237	* Do an accept(2) on the sock and return the new lttcomm socket. The socket
	238	* MUST be bind(2) before.
	239	*/
	240	struct lttcomm_sock lttcomm_accept_inet6_sock(struct lttcomm_sock sock)
	241	{
	242	int new_fd;
88a5db70	243	socklen_t len;
6364a07a	244	struct lttcomm_sock *new_sock;
1a65bbb8	245	struct sockaddr_in6 new_addr = {};
6364a07a DG	246
	247	if (sock->proto == LTTCOMM_SOCK_UDP) {
	248	/*
	249	* accept(2) does not exist for UDP so simply return the passed socket.
	250	*/
	251	new_sock = sock;
	252	goto end;
	253	}
	254
de5e9086	255	new_sock = lttcomm_alloc_sock(sock->proto);
6364a07a DG	256	if (new_sock == NULL) {
	257	goto error;
	258	}
	259
1a65bbb8	260	len = sizeof(new_addr);
88a5db70	261
6364a07a	262	/* Blocking call */
1a65bbb8	263	new_fd = accept(sock->fd, (struct sockaddr *) &new_addr, &len);
6364a07a DG	264	if (new_fd < 0) {
	265	PERROR("accept inet6");
	266	goto error;
	267	}
1a65bbb8	268	new_sock->sockaddr.addr.sin6 = new_addr;
6364a07a	269	new_sock->fd = new_fd;
de5e9086	270	new_sock->ops = &inet6_ops;
6364a07a DG	271
	272	end:
	273	return new_sock;
	274
	275	error:
	276	free(new_sock);
	277	return NULL;
	278	}
	279
	280	/*
	281	* Make the socket listen using LTTNG_SESSIOND_COMM_MAX_LISTEN.
	282	*/
	283	int lttcomm_listen_inet6_sock(struct lttcomm_sock *sock, int backlog)
	284	{
	285	int ret;
	286
	287	if (sock->proto == LTTCOMM_SOCK_UDP) {
	288	/* listen(2) does not exist for UDP so simply return success. */
	289	ret = 0;
	290	goto end;
	291	}
	292
	293	/* Default listen backlog */
	294	if (backlog <= 0) {
	295	backlog = LTTNG_SESSIOND_COMM_MAX_LISTEN;
	296	}
	297
	298	ret = listen(sock->fd, backlog);
	299	if (ret < 0) {
	300	PERROR("listen inet6");
	301	}
	302
	303	end:
	304	return ret;
	305	}
	306
	307	/*
	308	* Receive data of size len in put that data into the buf param. Using recvmsg
	309	* API.
	310	*
	311	* Return the size of received data.
	312	*/
	313	ssize_t lttcomm_recvmsg_inet6_sock(struct lttcomm_sock sock, void buf,
	314	size_t len, int flags)
	315	{
	316	struct msghdr msg;
	317	struct iovec iov[1];
	318	ssize_t ret = -1;
7c5aef62	319	size_t len_last;
1a65bbb8	320	struct sockaddr_in6 addr = sock->sockaddr.addr.sin6;
6364a07a DG	321
	322	memset(&msg, 0, sizeof(msg));
	323
	324	iov[0].iov_base = buf;
	325	iov[0].iov_len = len;
	326	msg.msg_iov = iov;
	327	msg.msg_iovlen = 1;
	328
1a65bbb8	329	msg.msg_name = (struct sockaddr *) &addr;
6364a07a DG	330	msg.msg_namelen = sizeof(sock->sockaddr.addr.sin6);
6364a07a DG	331
6364a07a	332	do {
7c5aef62	333	len_last = iov[0].iov_len;
6364a07a	334	ret = recvmsg(sock->fd, &msg, flags);
7c5aef62	335	if (ret > 0) {
5312a3ed JG	336	if (flags & MSG_DONTWAIT) {
	337	goto end;
	338	}
7c5aef62 DG	339	iov[0].iov_base += ret;
7c5aef62 DG	340	iov[0].iov_len -= ret;
a0377dfe	341	LTTNG_ASSERT(ret <= len_last);
7c5aef62 DG	342	}
7c5aef62 DG	343	} while ((ret > 0 && ret < len_last) \|\| (ret < 0 && errno == EINTR));
6364a07a	344	if (ret < 0) {
7c5aef62 DG	345	PERROR("recvmsg inet");
	346	} else if (ret > 0) {
	347	ret = len;
6364a07a	348	}
7c5aef62	349	/* Else ret = 0 meaning an orderly shutdown. */
5312a3ed	350	end:
6364a07a DG	351	return ret;
	352	}
	353
	354	/*
	355	* Send buf data of size len. Using sendmsg API.
	356	*
	357	* Return the size of sent data.
	358	*/
c2d69327	359	ssize_t lttcomm_sendmsg_inet6_sock(struct lttcomm_sock sock, const void buf,
6364a07a DG	360	size_t len, int flags)
	361	{
	362	struct msghdr msg;
	363	struct iovec iov[1];
	364	ssize_t ret = -1;
	365
	366	memset(&msg, 0, sizeof(msg));
	367
c2d69327	368	iov[0].iov_base = (void *) buf;
6364a07a DG	369	iov[0].iov_len = len;
	370	msg.msg_iov = iov;
	371	msg.msg_iovlen = 1;
	372
	373	switch (sock->proto) {
	374	case LTTCOMM_SOCK_UDP:
1a65bbb8 JG	375	{
	376	struct sockaddr_in6 addr = sock->sockaddr.addr.sin6;
	377
	378	msg.msg_name = (struct sockaddr *) &addr;
6364a07a DG	379	msg.msg_namelen = sizeof(sock->sockaddr.addr.sin6);
6364a07a DG	380	break;
1a65bbb8	381	}
6364a07a DG	382	default:
	383	break;
	384	}
	385
	386	do {
	387	ret = sendmsg(sock->fd, &msg, flags);
	388	} while (ret < 0 && errno == EINTR);
	389	if (ret < 0) {
	390	/*
	391	* Only warn about EPIPE when quiet mode is deactivated.
	392	* We consider EPIPE as expected.
	393	*/
	394	if (errno != EPIPE \|\| !lttng_opt_quiet) {
	395	PERROR("sendmsg inet6");
	396	}
	397	}
	398
	399	return ret;
	400	}
	401
	402	/*
	403	* Shutdown cleanly and close.
	404	*/
	405	int lttcomm_close_inet6_sock(struct lttcomm_sock *sock)
	406	{
6e742359	407	int ret;
6364a07a	408
de5e9086	409	/* Don't try to close an invalid marked socket */
6364a07a DG	410	if (sock->fd == -1) {
	411	return 0;
	412	}
	413
6e742359 DG	414	ret = close(sock->fd);
6e742359 DG	415	if (ret) {
6364a07a DG	416	PERROR("close inet6");
	417	}
	418
	419	/* Mark socket */
	420	sock->fd = -1;
	421
	422	return ret;
	423	}