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

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 * 
 * This program 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 General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define _GNU_SOURCE
#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>

#include <common/common.h>

#include "sessiond-comm.h"

/* For Unix socket */
#include "unix.h"
/* For Inet socket */
#include "inet.h"
/* For Inet6 socket */
#include "inet6.h"

static struct lttcomm_net_family net_families[] = {
	{ LTTCOMM_INET, lttcomm_create_inet_sock },
	{ LTTCOMM_INET6, lttcomm_create_inet6_sock },
};

/*
 * Human readable error message.
 */
static const char *lttcomm_readable_code[] = {
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",

	/* Last element */
	[ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code"
};

/*
 * Return ptr to string representing a human readable error code from the
 * lttcomm_return_code enum.
 *
 * These code MUST be negative in other to treat that as an error value.
 */
LTTNG_HIDDEN
const char *lttcomm_get_readable_code(enum lttcomm_return_code code)
{
	code = -code;

	if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY || code > LTTCOMM_NR) {
		code = LTTCOMM_NR;
	}

	return lttcomm_readable_code[LTTCOMM_ERR_INDEX(code)];
}

/*
 * Create socket from an already allocated lttcomm socket structure and init
 * sockaddr in the lttcomm sock.
 */
LTTNG_HIDDEN
int lttcomm_create_sock(struct lttcomm_sock *sock)
{
	int ret, _sock_type, _sock_proto, domain;

	assert(sock);

	domain = sock->sockaddr.type;
	if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) {
		ERR("Create socket of unknown domain %d", domain);
		ret = -1;
		goto error;
	}

	switch (sock->proto) {
	case LTTCOMM_SOCK_UDP:
		_sock_type = SOCK_DGRAM;
		_sock_proto = IPPROTO_UDP;
		break;
	case LTTCOMM_SOCK_TCP:
		_sock_type = SOCK_STREAM;
		_sock_proto = IPPROTO_TCP;
		break;
	default:
		ret = -1;
		goto error;
	}

	ret = net_families[domain].create(sock, _sock_type, _sock_proto);
	if (ret < 0) {
		goto error;
	}

error:
	return ret;
}

/*
 * Return allocated lttcomm socket structure.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto)
{
	struct lttcomm_sock *sock;

	sock = zmalloc(sizeof(struct lttcomm_sock));
	if (sock == NULL) {
		PERROR("zmalloc create sock");
		goto end;
	}

	sock->proto = proto;
	sock->fd = -1;

end:
	return sock;
}

/*
 * Return an allocated lttcomm socket structure and copy src content into
 * the newly created socket.
 *
 * This is mostly useful when lttcomm_sock are passed between process where the
 * fd and ops have to be changed within the correct address space.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src)
{
	struct lttcomm_sock *sock;

	/* Safety net */
	assert(src);

	sock = lttcomm_alloc_sock(src->proto);
	if (sock == NULL) {
		goto alloc_error;
	}

	lttcomm_copy_sock(sock, src);

alloc_error:
	return sock;
}

/*
 * Create and copy socket from an allocated lttcomm socket structure.
 *
 * This is mostly useful when lttcomm_sock are passed between process where the
 * fd and ops have to be changed within the correct address space.
 */
LTTNG_HIDDEN
void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src)
{
	/* Safety net */
	assert(dst);
	assert(src);

	dst->proto = src->proto;
	dst->fd = src->fd;
	dst->ops = src->ops;
	/* Copy sockaddr information from original socket */
	memcpy(&dst->sockaddr, &src->sockaddr, sizeof(dst->sockaddr));
}

/*
 * Init IPv4 sockaddr structure.
 */
LTTNG_HIDDEN
int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
		const char *ip, unsigned int port)
{
	int ret;

	assert(sockaddr);
	assert(ip);
	assert(port > 0 && port <= 65535);

	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));

	sockaddr->type = LTTCOMM_INET;
	sockaddr->addr.sin.sin_family = AF_INET;
	sockaddr->addr.sin.sin_port = htons(port);
	ret = inet_pton(sockaddr->addr.sin.sin_family, ip,
			&sockaddr->addr.sin.sin_addr);
	if (ret < 1) {
		ret = -1;
		ERR("%s with port %d: unrecognized IPv4 address", ip, port);
		goto error;
	}
	memset(sockaddr->addr.sin.sin_zero, 0, sizeof(sockaddr->addr.sin.sin_zero));

error:
	return ret;
}

/*
 * Init IPv6 sockaddr structure.
 */
LTTNG_HIDDEN
int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
		const char *ip, unsigned int port)
{
	int ret;

	assert(sockaddr);
	assert(ip);
	assert(port > 0 && port <= 65535);

	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));

	sockaddr->type = LTTCOMM_INET6;
	sockaddr->addr.sin6.sin6_family = AF_INET6;
	sockaddr->addr.sin6.sin6_port = htons(port);
	ret = inet_pton(sockaddr->addr.sin6.sin6_family, ip,
			&sockaddr->addr.sin6.sin6_addr);
	if (ret < 1) {
		ret = -1;
		goto error;
	}

error:
	return ret;
}

/*
 * Return allocated lttcomm socket structure from lttng URI.
 */
LTTNG_HIDDEN
struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri)
{
	int ret;
	int _sock_proto;
	struct lttcomm_sock *sock = NULL;

	/* Safety net */
	assert(uri);

	/* Check URI protocol */
	if (uri->proto == LTTNG_TCP) {
		_sock_proto = LTTCOMM_SOCK_TCP;
	} else {
		ERR("Relayd invalid URI proto: %d", uri->proto);
		goto alloc_error;
	}

	sock = lttcomm_alloc_sock(_sock_proto);
	if (sock == NULL) {
		goto alloc_error;
	}

	/* Check destination type */
	if (uri->dtype == LTTNG_DST_IPV4) {
		ret = lttcomm_init_inet_sockaddr(&sock->sockaddr, uri->dst.ipv4,
				uri->port);
		if (ret < 0) {
			goto error;
		}
	} else if (uri->dtype == LTTNG_DST_IPV6) {
		ret = lttcomm_init_inet6_sockaddr(&sock->sockaddr, uri->dst.ipv6,
				uri->port);
		if (ret < 0) {
			goto error;
		}
	} else {
		/* Command URI is invalid */
		ERR("Relayd invalid URI dst type: %d", uri->dtype);
		goto error;
	}

	return sock;

error:
	lttcomm_destroy_sock(sock);
alloc_error:
	return NULL;
}

/*
 * Destroy and free lttcomm socket.
 */
LTTNG_HIDDEN
void lttcomm_destroy_sock(struct lttcomm_sock *sock)
{
	free(sock);
}

/*
 * Allocate and return a relayd socket object using a given URI to initialize
 * it and the major/minor version of the supported protocol.
 *
 * On error, NULL is returned.
 */
struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock(struct lttng_uri *uri,
		uint32_t major, uint32_t minor)
{
	int ret;
	struct lttcomm_sock *tmp_sock = NULL;
	struct lttcomm_relayd_sock *rsock = NULL;

	assert(uri);

	rsock = zmalloc(sizeof(*rsock));
	if (!rsock) {
		PERROR("zmalloc relayd sock");
		goto error;
	}

	/* Allocate socket object from URI */
	tmp_sock = lttcomm_alloc_sock_from_uri(uri);
	if (tmp_sock == NULL) {
		goto error_free;
	}

	/*
	 * Create socket object which basically sets the ops according to the
	 * socket protocol.
	 */
	lttcomm_copy_sock(&rsock->sock, tmp_sock);
	/* Temporary socket pointer not needed anymore. */
	lttcomm_destroy_sock(tmp_sock);
	ret = lttcomm_create_sock(&rsock->sock);
	if (ret < 0) {
		goto error_free;
	}

	rsock->major = major;
	rsock->minor = minor;

	return rsock;

error_free:
	free(rsock);
error:
	return NULL;
}
Commit	Line	Data
826d496d	1	/*
917216f6 DG	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
917216f6 DG	3	* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
fac6795d	4	*
d14d33bf AM	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License, version 2 only,
	7	* as published by the Free Software Foundation.
fac6795d	8	*
917216f6 DG	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
fac6795d	13	*
d14d33bf AM	14	* You should have received a copy of the GNU General Public License along
	15	* with this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
fac6795d DG	17	*/
	18
	19	#define _GNU_SOURCE
1e307fab	20	#include <assert.h>
fac6795d DG	21	#include <limits.h>
	22	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <string.h>
fac6795d DG	25	#include <sys/stat.h>
fac6795d DG	26	#include <sys/types.h>
fac6795d	27	#include <unistd.h>
3bd1e081	28	#include <errno.h>
fac6795d	29
90e535ef	30	#include <common/common.h>
990570ed	31
10a8a223	32	#include "sessiond-comm.h"
fac6795d	33
6364a07a DG	34	/* For Unix socket */
	35	#include "unix.h"
	36	/* For Inet socket */
	37	#include "inet.h"
	38	/* For Inet6 socket */
	39	#include "inet6.h"
	40
32dd26fb	41	static struct lttcomm_net_family net_families[] = {
6364a07a DG	42	{ LTTCOMM_INET, lttcomm_create_inet_sock },
	43	{ LTTCOMM_INET6, lttcomm_create_inet6_sock },
	44	};
	45
fac6795d DG	46	/*
	47	* Human readable error message.
	48	*/
	49	static const char *lttcomm_readable_code[] = {
f73fabfd DG	50	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready",
	51	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds",
	52	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds",
	53	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command",
	54	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread",
	55	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd",
	56	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up",
	57	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally",
	58	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error",
	59	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile",
	60	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF",
	61	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL",
	62	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM",
	63	[ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE",
80e327fa	64
f73fabfd DG	65	/* Last element */
f73fabfd DG	66	[ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code"
fac6795d DG	67	};
	68
	69	/*
917216f6 DG	70	* Return ptr to string representing a human readable error code from the
917216f6 DG	71	* lttcomm_return_code enum.
fac6795d	72	*
917216f6	73	* These code MUST be negative in other to treat that as an error value.
fac6795d	74	*/
90e535ef	75	LTTNG_HIDDEN
fac6795d DG	76	const char *lttcomm_get_readable_code(enum lttcomm_return_code code)
fac6795d DG	77	{
f73fabfd	78	code = -code;
fac6795d	79
c617c0c6	80	if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY \|\| code > LTTCOMM_NR) {
f73fabfd	81	code = LTTCOMM_NR;
fac6795d DG	82	}
fac6795d DG	83
f73fabfd	84	return lttcomm_readable_code[LTTCOMM_ERR_INDEX(code)];
fac6795d	85	}
6364a07a DG	86
6364a07a DG	87	/*
de5e9086 DG	88	* Create socket from an already allocated lttcomm socket structure and init
de5e9086 DG	89	* sockaddr in the lttcomm sock.
6364a07a	90	*/
90e535ef	91	LTTNG_HIDDEN
de5e9086	92	int lttcomm_create_sock(struct lttcomm_sock *sock)
6364a07a	93	{
de5e9086	94	int ret, _sock_type, _sock_proto, domain;
6364a07a	95
de5e9086 DG	96	assert(sock);
	97
	98	domain = sock->sockaddr.type;
	99	if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) {
	100	ERR("Create socket of unknown domain %d", domain);
	101	ret = -1;
	102	goto error;
6364a07a DG	103	}
6364a07a DG	104
de5e9086 DG	105	switch (sock->proto) {
	106	case LTTCOMM_SOCK_UDP:
	107	_sock_type = SOCK_DGRAM;
	108	_sock_proto = IPPROTO_UDP;
	109	break;
	110	case LTTCOMM_SOCK_TCP:
	111	_sock_type = SOCK_STREAM;
	112	_sock_proto = IPPROTO_TCP;
	113	break;
	114	default:
	115	ret = -1;
	116	goto error;
	117	}
6364a07a	118
de5e9086 DG	119	ret = net_families[domain].create(sock, _sock_type, _sock_proto);
	120	if (ret < 0) {
	121	goto error;
	122	}
	123
	124	error:
	125	return ret;
6364a07a DG	126	}
	127
	128	/*
de5e9086	129	* Return allocated lttcomm socket structure.
6364a07a	130	*/
90e535ef	131	LTTNG_HIDDEN
de5e9086	132	struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto)
6364a07a	133	{
de5e9086	134	struct lttcomm_sock *sock;
6364a07a	135
de5e9086 DG	136	sock = zmalloc(sizeof(struct lttcomm_sock));
	137	if (sock == NULL) {
	138	PERROR("zmalloc create sock");
	139	goto end;
6364a07a DG	140	}
	141
	142	sock->proto = proto;
de5e9086	143	sock->fd = -1;
6364a07a	144
de5e9086 DG	145	end:
de5e9086 DG	146	return sock;
6364a07a DG	147	}
	148
	149	/*
de5e9086 DG	150	* Return an allocated lttcomm socket structure and copy src content into
	151	* the newly created socket.
	152	*
	153	* This is mostly useful when lttcomm_sock are passed between process where the
	154	* fd and ops have to be changed within the correct address space.
6364a07a	155	*/
90e535ef	156	LTTNG_HIDDEN
de5e9086	157	struct lttcomm_sock lttcomm_alloc_copy_sock(struct lttcomm_sock src)
6364a07a	158	{
6364a07a DG	159	struct lttcomm_sock *sock;
6364a07a DG	160
de5e9086 DG	161	/* Safety net */
	162	assert(src);
	163
	164	sock = lttcomm_alloc_sock(src->proto);
6364a07a DG	165	if (sock == NULL) {
	166	goto alloc_error;
	167	}
	168
de5e9086	169	lttcomm_copy_sock(sock, src);
6364a07a	170
de5e9086	171	alloc_error:
6364a07a	172	return sock;
de5e9086	173	}
6364a07a	174
de5e9086 DG	175	/*
	176	* Create and copy socket from an allocated lttcomm socket structure.
	177	*
	178	* This is mostly useful when lttcomm_sock are passed between process where the
	179	* fd and ops have to be changed within the correct address space.
	180	*/
90e535ef	181	LTTNG_HIDDEN
de5e9086 DG	182	void lttcomm_copy_sock(struct lttcomm_sock dst, struct lttcomm_sock src)
	183	{
	184	/* Safety net */
	185	assert(dst);
	186	assert(src);
	187
	188	dst->proto = src->proto;
	189	dst->fd = src->fd;
	190	dst->ops = src->ops;
	191	/* Copy sockaddr information from original socket */
	192	memcpy(&dst->sockaddr, &src->sockaddr, sizeof(dst->sockaddr));
6364a07a DG	193	}
	194
	195	/*
	196	* Init IPv4 sockaddr structure.
	197	*/
90e535ef	198	LTTNG_HIDDEN
6364a07a DG	199	int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
	200	const char *ip, unsigned int port)
	201	{
	202	int ret;
	203
	204	assert(sockaddr);
	205	assert(ip);
	206	assert(port > 0 && port <= 65535);
	207
	208	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
	209
	210	sockaddr->type = LTTCOMM_INET;
	211	sockaddr->addr.sin.sin_family = AF_INET;
	212	sockaddr->addr.sin.sin_port = htons(port);
	213	ret = inet_pton(sockaddr->addr.sin.sin_family, ip,
	214	&sockaddr->addr.sin.sin_addr);
	215	if (ret < 1) {
	216	ret = -1;
de5e9086	217	ERR("%s with port %d: unrecognized IPv4 address", ip, port);
6364a07a DG	218	goto error;
	219	}
	220	memset(sockaddr->addr.sin.sin_zero, 0, sizeof(sockaddr->addr.sin.sin_zero));
	221
	222	error:
	223	return ret;
	224	}
	225
	226	/*
	227	* Init IPv6 sockaddr structure.
	228	*/
90e535ef	229	LTTNG_HIDDEN
6364a07a DG	230	int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
	231	const char *ip, unsigned int port)
	232	{
	233	int ret;
	234
	235	assert(sockaddr);
	236	assert(ip);
	237	assert(port > 0 && port <= 65535);
	238
	239	memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr));
	240
	241	sockaddr->type = LTTCOMM_INET6;
	242	sockaddr->addr.sin6.sin6_family = AF_INET6;
	243	sockaddr->addr.sin6.sin6_port = htons(port);
	244	ret = inet_pton(sockaddr->addr.sin6.sin6_family, ip,
	245	&sockaddr->addr.sin6.sin6_addr);
	246	if (ret < 1) {
	247	ret = -1;
	248	goto error;
	249	}
	250
	251	error:
	252	return ret;
	253	}
de5e9086 DG	254
	255	/*
	256	* Return allocated lttcomm socket structure from lttng URI.
	257	*/
90e535ef	258	LTTNG_HIDDEN
de5e9086 DG	259	struct lttcomm_sock lttcomm_alloc_sock_from_uri(struct lttng_uri uri)
	260	{
	261	int ret;
	262	int _sock_proto;
	263	struct lttcomm_sock *sock = NULL;
	264
	265	/* Safety net */
	266	assert(uri);
	267
	268	/* Check URI protocol */
	269	if (uri->proto == LTTNG_TCP) {
	270	_sock_proto = LTTCOMM_SOCK_TCP;
	271	} else {
	272	ERR("Relayd invalid URI proto: %d", uri->proto);
	273	goto alloc_error;
	274	}
	275
	276	sock = lttcomm_alloc_sock(_sock_proto);
	277	if (sock == NULL) {
	278	goto alloc_error;
	279	}
	280
	281	/* Check destination type */
	282	if (uri->dtype == LTTNG_DST_IPV4) {
	283	ret = lttcomm_init_inet_sockaddr(&sock->sockaddr, uri->dst.ipv4,
	284	uri->port);
	285	if (ret < 0) {
	286	goto error;
	287	}
	288	} else if (uri->dtype == LTTNG_DST_IPV6) {
	289	ret = lttcomm_init_inet6_sockaddr(&sock->sockaddr, uri->dst.ipv6,
	290	uri->port);
	291	if (ret < 0) {
	292	goto error;
	293	}
	294	} else {
	295	/* Command URI is invalid */
	296	ERR("Relayd invalid URI dst type: %d", uri->dtype);
	297	goto error;
	298	}
	299
	300	return sock;
	301
	302	error:
	303	lttcomm_destroy_sock(sock);
	304	alloc_error:
	305	return NULL;
	306	}
	307
	308	/*
	309	* Destroy and free lttcomm socket.
	310	*/
90e535ef	311	LTTNG_HIDDEN
de5e9086 DG	312	void lttcomm_destroy_sock(struct lttcomm_sock *sock)
de5e9086 DG	313	{
0e428499	314	free(sock);
de5e9086	315	}
6151a90f JD	316
	317	/*
	318	* Allocate and return a relayd socket object using a given URI to initialize
	319	* it and the major/minor version of the supported protocol.
	320	*
	321	* On error, NULL is returned.
	322	*/
	323	struct lttcomm_relayd_sock lttcomm_alloc_relayd_sock(struct lttng_uri uri,
	324	uint32_t major, uint32_t minor)
	325	{
	326	int ret;
	327	struct lttcomm_sock *tmp_sock = NULL;
	328	struct lttcomm_relayd_sock *rsock = NULL;
	329
	330	assert(uri);
	331
	332	rsock = zmalloc(sizeof(*rsock));
	333	if (!rsock) {
	334	PERROR("zmalloc relayd sock");
	335	goto error;
	336	}
	337
	338	/* Allocate socket object from URI */
	339	tmp_sock = lttcomm_alloc_sock_from_uri(uri);
	340	if (tmp_sock == NULL) {
	341	goto error_free;
	342	}
	343
	344	/*
	345	* Create socket object which basically sets the ops according to the
	346	* socket protocol.
	347	*/
	348	lttcomm_copy_sock(&rsock->sock, tmp_sock);
	349	/* Temporary socket pointer not needed anymore. */
	350	lttcomm_destroy_sock(tmp_sock);
	351	ret = lttcomm_create_sock(&rsock->sock);
	352	if (ret < 0) {
	353	goto error_free;
	354	}
	355
	356	rsock->major = major;
	357	rsock->minor = minor;
	358
	359	return rsock;
	360
	361	error_free:
	362	free(rsock);
	363	error:
	364	return NULL;
	365	}