X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fsessiond-comm%2Fsessiond-comm.c;h=9f00ae181afd42aabd18fc9b0320a35e7569e95a;hp=d1324d53013a696cea0289711d29c69bf17be4a9;hb=7bd95aee4660c6419a4a65429fc27754481e7e90;hpb=0e428499a49b2335f4859058739fa2b20f4c410f diff --git a/src/common/sessiond-comm/sessiond-comm.c b/src/common/sessiond-comm/sessiond-comm.c index d1324d530..9f00ae181 100644 --- a/src/common/sessiond-comm/sessiond-comm.c +++ b/src/common/sessiond-comm/sessiond-comm.c @@ -1,22 +1,12 @@ /* - * Copyright (C) 2011 - David Goulet - * Mathieu Desnoyers + * Copyright (C) 2011 David Goulet + * Copyright (C) 2011 Mathieu Desnoyers + * + * SPDX-License-Identifier: GPL-2.0-only * - * 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 +#define _LGPL_SOURCE #include #include #include @@ -26,19 +16,21 @@ #include #include #include +#include -#include -#include +#include #include "sessiond-comm.h" /* For Unix socket */ -#include "unix.h" +#include /* For Inet socket */ #include "inet.h" /* For Inet6 socket */ #include "inet6.h" +#define NETWORK_TIMEOUT_ENV "LTTNG_NETWORK_SOCKET_TIMEOUT" + static struct lttcomm_net_family net_families[] = { { LTTCOMM_INET, lttcomm_create_inet_sock }, { LTTCOMM_INET6, lttcomm_create_inet6_sock }, @@ -62,18 +54,24 @@ static const char *lttcomm_readable_code[] = { [ 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", + [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ENOMEM) ] = "Consumer is out of memory", + [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_METADATA) ] = "Error with metadata", + [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_FATAL) ] = "Fatal error", + [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_RELAYD_FAIL) ] = "Error on remote relayd", /* Last element */ [ LTTCOMM_ERR_INDEX(LTTCOMM_NR) ] = "Unknown error code" }; +static unsigned long network_timeout; + /* * 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. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN const char *lttcomm_get_readable_code(enum lttcomm_return_code code) { code = -code; @@ -89,7 +87,7 @@ const char *lttcomm_get_readable_code(enum lttcomm_return_code code) * Create socket from an already allocated lttcomm socket structure and init * sockaddr in the lttcomm sock. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN int lttcomm_create_sock(struct lttcomm_sock *sock) { int ret, _sock_type, _sock_proto, domain; @@ -129,7 +127,7 @@ error: /* * Return allocated lttcomm socket structure. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto) { struct lttcomm_sock *sock; @@ -154,7 +152,7 @@ end: * 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. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src) { struct lttcomm_sock *sock; @@ -179,7 +177,7 @@ alloc_error: * 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. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src) { /* Safety net */ @@ -196,7 +194,7 @@ void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src) /* * Init IPv4 sockaddr structure. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr, const char *ip, unsigned int port) { @@ -227,7 +225,7 @@ error: /* * Init IPv6 sockaddr structure. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr, const char *ip, unsigned int port) { @@ -256,7 +254,7 @@ error: /* * Return allocated lttcomm socket structure from lttng URI. */ -__attribute__((visibility("hidden"))) +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri) { int ret; @@ -309,8 +307,173 @@ alloc_error: /* * Destroy and free lttcomm socket. */ -__attribute__((visibility("hidden"))) +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. + */ +LTTNG_HIDDEN +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; +} + +/* + * Set socket receiving timeout. + */ +LTTNG_HIDDEN +int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec) +{ + int ret; + struct timeval tv; + + tv.tv_sec = msec / 1000; + tv.tv_usec = (msec % 1000) * 1000; + + ret = setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)); + if (ret < 0) { + PERROR("setsockopt SO_RCVTIMEO"); + } + + return ret; +} + +/* + * Set socket sending timeout. + */ +LTTNG_HIDDEN +int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec) +{ + int ret; + struct timeval tv; + + tv.tv_sec = msec / 1000; + tv.tv_usec = (msec % 1000) * 1000; + + ret = setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); + if (ret < 0) { + PERROR("setsockopt SO_SNDTIMEO"); + } + + return ret; +} + +LTTNG_HIDDEN +int lttcomm_sock_get_port(const struct lttcomm_sock *sock, uint16_t *port) +{ + assert(sock); + assert(port); + assert(sock->sockaddr.type == LTTCOMM_INET || + sock->sockaddr.type == LTTCOMM_INET6); + assert(sock->proto == LTTCOMM_SOCK_TCP || + sock->proto == LTTCOMM_SOCK_UDP); + + switch (sock->sockaddr.type) { + case LTTCOMM_INET: + *port = ntohs(sock->sockaddr.addr.sin.sin_port); + break; + case LTTCOMM_INET6: + *port = ntohs(sock->sockaddr.addr.sin6.sin6_port); + break; + default: + abort(); + } + + return 0; +} + +LTTNG_HIDDEN +int lttcomm_sock_set_port(struct lttcomm_sock *sock, uint16_t port) +{ + assert(sock); + assert(sock->sockaddr.type == LTTCOMM_INET || + sock->sockaddr.type == LTTCOMM_INET6); + assert(sock->proto == LTTCOMM_SOCK_TCP || + sock->proto == LTTCOMM_SOCK_UDP); + + switch (sock->sockaddr.type) { + case LTTCOMM_INET: + sock->sockaddr.addr.sin.sin_port = htons(port); + break; + case LTTCOMM_INET6: + sock->sockaddr.addr.sin6.sin6_port = htons(port); + break; + default: + abort(); + } + + return 0; +} + +LTTNG_HIDDEN +void lttcomm_init(void) +{ + const char *env; + + env = getenv(NETWORK_TIMEOUT_ENV); + if (env) { + long timeout; + + errno = 0; + timeout = strtol(env, NULL, 0); + if (errno != 0 || timeout < -1L) { + PERROR("Network timeout"); + } else { + if (timeout > 0) { + network_timeout = timeout; + } + } + } +} + +LTTNG_HIDDEN +unsigned long lttcomm_get_network_timeout(void) +{ + return network_timeout; +}