X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fsessiond-comm%2Fsessiond-comm.c;h=ed185b1ea8934dd39af312258e9c858b984d8b85;hb=a0377dfefe40662ba7d68617bce6ff467114136c;hp=aee9458b44660d1a728b726eee79379277f69230;hpb=a4b92340642035d1eafeb1eead0ad01f64d2007d;p=lttng-tools.git diff --git a/src/common/sessiond-comm/sessiond-comm.c b/src/common/sessiond-comm/sessiond-comm.c index aee9458b4..ed185b1ea 100644 --- a/src/common/sessiond-comm/sessiond-comm.c +++ b/src/common/sessiond-comm/sessiond-comm.c @@ -1,23 +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 -#include +#define _LGPL_SOURCE #include #include #include @@ -25,21 +14,23 @@ #include #include #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" -struct lttcomm_net_family net_families[] = { +#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 }, }; @@ -48,133 +39,59 @@ struct lttcomm_net_family net_families[] = { * Human readable error message. */ static const char *lttcomm_readable_code[] = { - [ LTTCOMM_ERR_INDEX(LTTCOMM_OK) ] = "Success", - [ LTTCOMM_ERR_INDEX(LTTCOMM_ERR) ] = "Unknown error", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UND) ] = "Undefined command", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NOT_IMPLEMENTED) ] = "Not implemented", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UNKNOWN_DOMAIN) ] = "Unknown tracing domain", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_SESSION) ] = "No session found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_LIST_FAIL) ] = "Unable to list traceable apps", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_APPS) ] = "No traceable apps found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_SESS_NOT_FOUND) ] = "Session name not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_TRACE) ] = "No trace found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_FATAL) ] = "Fatal error of the session daemon", - [ LTTCOMM_ERR_INDEX(LTTCOMM_CREATE_DIR_FAIL) ] = "Create directory failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_START_FAIL) ] = "Start trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_STOP_FAIL) ] = "Stop trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_TRACEABLE) ] = "App is not traceable", - [ LTTCOMM_ERR_INDEX(LTTCOMM_SELECT_SESS) ] = "A session MUST be selected", - [ LTTCOMM_ERR_INDEX(LTTCOMM_EXIST_SESS) ] = "Session name already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_CONNECT_FAIL) ] = "Unable to connect to Unix socket", - [ LTTCOMM_ERR_INDEX(LTTCOMM_APP_NOT_FOUND) ] = "Application not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_EPERM) ] = "Permission denied", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_NA) ] = "Kernel tracer not available", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_VERSION) ] = "Kernel tracer version is not compatible", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_EVENT_EXIST) ] = "Kernel event already exists", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_SESS_FAIL) ] = "Kernel create session failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_EXIST) ] = "Kernel channel already exists", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_FAIL) ] = "Kernel create channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_NOT_FOUND) ] = "Kernel channel not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_DISABLE_FAIL) ] = "Disable kernel channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CHAN_ENABLE_FAIL) ] = "Enable kernel channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CONTEXT_FAIL) ] = "Add kernel context failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_ENABLE_FAIL) ] = "Enable kernel event failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DISABLE_FAIL) ] = "Disable kernel event failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_META_FAIL) ] = "Opening metadata failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_START_FAIL) ] = "Starting kernel trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_STOP_FAIL) ] = "Stoping kernel trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_CONSUMER_FAIL) ] = "Kernel consumer start failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_STREAM_FAIL) ] = "Kernel create stream failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DIR_FAIL) ] = "Kernel trace directory creation failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_DIR_EXIST) ] = "Kernel trace directory already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_NO_SESSION) ] = "No kernel session found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_LIST_FAIL) ] = "Listing kernel events failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CALIBRATE_FAIL) ] = "UST calibration failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_VERSION) ] = "UST tracer version is not compatible", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_SESS_FAIL) ] = "UST create session failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_FAIL) ] = "UST create channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_EXIST) ] = "UST channel already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_NOT_FOUND) ] = "UST channel not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_DISABLE_FAIL) ] = "Disable UST channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CHAN_ENABLE_FAIL) ] = "Enable UST channel failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_FAIL) ] = "Add UST context failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_ENABLE_FAIL) ] = "Enable UST event failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DISABLE_FAIL) ] = "Disable UST event failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_META_FAIL) ] = "Opening metadata failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_START_FAIL) ] = "Starting UST trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_STOP_FAIL) ] = "Stoping UST trace failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONSUMER64_FAIL) ] = "64-bit UST consumer start failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONSUMER32_FAIL) ] = "32-bit UST consumer start failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_STREAM_FAIL) ] = "UST create stream failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DIR_FAIL) ] = "UST trace directory creation failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_DIR_EXIST) ] = "UST trace directory already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_NO_SESSION) ] = "No UST session found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_LIST_FAIL) ] = "Listing UST events failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_EVENT_EXIST) ] = "UST event already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_EVENT_NOT_FOUND)] = "UST event not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_EXIST)] = "UST context already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_UST_CONTEXT_INVAL)] = "UST invalid context", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NEED_ROOT_SESSIOND) ] = "Tracing the kernel requires a root lttng-sessiond daemon and \"tracing\" group user membership", - [ LTTCOMM_ERR_INDEX(LTTCOMM_TRACE_ALREADY_STARTED) ] = "Tracing already started", - [ LTTCOMM_ERR_INDEX(LTTCOMM_TRACE_ALREADY_STOPPED) ] = "Tracing already stopped", - [ LTTCOMM_ERR_INDEX(LTTCOMM_KERN_EVENT_ENOSYS) ] = "Kernel event type not supported", - - [ LTTCOMM_ERR_INDEX(CONSUMERD_COMMAND_SOCK_READY) ] = "consumerd command socket ready", - [ LTTCOMM_ERR_INDEX(CONSUMERD_SUCCESS_RECV_FD) ] = "consumerd success on receiving fds", - [ LTTCOMM_ERR_INDEX(CONSUMERD_ERROR_RECV_FD) ] = "consumerd error on receiving fds", - [ LTTCOMM_ERR_INDEX(CONSUMERD_ERROR_RECV_CMD) ] = "consumerd error on receiving command", - [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_ERROR) ] = "consumerd error in polling thread", - [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_NVAL) ] = "consumerd polling on closed fd", - [ LTTCOMM_ERR_INDEX(CONSUMERD_POLL_HUP) ] = "consumerd all fd hung up", - [ LTTCOMM_ERR_INDEX(CONSUMERD_EXIT_SUCCESS) ] = "consumerd exiting normally", - [ LTTCOMM_ERR_INDEX(CONSUMERD_EXIT_FAILURE) ] = "consumerd exiting on error", - [ LTTCOMM_ERR_INDEX(CONSUMERD_OUTFD_ERROR) ] = "consumerd error opening the tracefile", - [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_EBADF) ] = "consumerd splice EBADF", - [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_EINVAL) ] = "consumerd splice EINVAL", - [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_ENOMEM) ] = "consumerd splice ENOMEM", - [ LTTCOMM_ERR_INDEX(CONSUMERD_SPLICE_ESPIPE) ] = "consumerd splice ESPIPE", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_EVENT) ] = "Event not found", - [ LTTCOMM_ERR_INDEX(LTTCOMM_INVALID) ] = "Invalid parameter", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_USTCONSUMERD) ] = "No UST consumer detected", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_KERNCONSUMERD) ] = "No kernel consumer detected", - [ LTTCOMM_ERR_INDEX(LTTCOMM_EVENT_EXIST_LOGLEVEL) ] = "Event already enabled with different loglevel", - [ LTTCOMM_ERR_INDEX(LTTCOMM_URL_DATA_MISS) ] = "Missing data path URL", - [ LTTCOMM_ERR_INDEX(LTTCOMM_URL_CTRL_MISS) ] = "Missing control data path URL", - [ LTTCOMM_ERR_INDEX(LTTCOMM_ENABLE_CONSUMER_FAIL) ] = "Enabling consumer failed", - [ LTTCOMM_ERR_INDEX(LTTCOMM_RELAYD_SESSION_FAIL) ] = "Unable to create session on lttng-relayd", - [ LTTCOMM_ERR_INDEX(LTTCOMM_RELAYD_VERSION_FAIL) ] = "Relay daemon not compatible", - [ LTTCOMM_ERR_INDEX(LTTCOMM_FILTER_INVAL) ] = "Invalid filter bytecode", - [ LTTCOMM_ERR_INDEX(LTTCOMM_FILTER_NOMEM) ] = "Not enough memory for filter bytecode", - [ LTTCOMM_ERR_INDEX(LTTCOMM_FILTER_EXIST) ] = "Filter already exist", - [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_CONSUMER) ] = "Consumer not found for tracing session", + [ 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", + [ 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. */ +LTTNG_HIDDEN const char *lttcomm_get_readable_code(enum lttcomm_return_code code) { - int tmp_code = -code; + code = -code; - if (tmp_code >= LTTCOMM_OK && tmp_code < LTTCOMM_NR) { - return lttcomm_readable_code[LTTCOMM_ERR_INDEX(tmp_code)]; + if (code < LTTCOMM_CONSUMERD_COMMAND_SOCK_READY || code > LTTCOMM_NR) { + code = LTTCOMM_NR; } - return "Unknown error code"; + 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); + LTTNG_ASSERT(sock); domain = sock->sockaddr.type; if (domain != LTTCOMM_INET && domain != LTTCOMM_INET6) { @@ -209,6 +126,7 @@ error: /* * Return allocated lttcomm socket structure. */ +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto) { struct lttcomm_sock *sock; @@ -233,12 +151,13 @@ 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. */ +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src) { struct lttcomm_sock *sock; /* Safety net */ - assert(src); + LTTNG_ASSERT(src); sock = lttcomm_alloc_sock(src->proto); if (sock == NULL) { @@ -257,11 +176,12 @@ 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. */ +LTTNG_HIDDEN void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src) { /* Safety net */ - assert(dst); - assert(src); + LTTNG_ASSERT(dst); + LTTNG_ASSERT(src); dst->proto = src->proto; dst->fd = src->fd; @@ -273,14 +193,15 @@ void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src) /* * 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); + LTTNG_ASSERT(sockaddr); + LTTNG_ASSERT(ip); + LTTNG_ASSERT(port > 0 && port <= 65535); memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr)); @@ -303,14 +224,15 @@ error: /* * 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); + LTTNG_ASSERT(sockaddr); + LTTNG_ASSERT(ip); + LTTNG_ASSERT(port > 0 && port <= 65535); memset(sockaddr, 0, sizeof(struct lttcomm_sockaddr)); @@ -331,6 +253,7 @@ error: /* * Return allocated lttcomm socket structure from lttng URI. */ +LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri) { int ret; @@ -338,7 +261,7 @@ struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri) struct lttcomm_sock *sock = NULL; /* Safety net */ - assert(uri); + LTTNG_ASSERT(uri); /* Check URI protocol */ if (uri->proto == LTTNG_TCP) { @@ -383,9 +306,173 @@ alloc_error: /* * Destroy and free lttcomm socket. */ +LTTNG_HIDDEN void lttcomm_destroy_sock(struct lttcomm_sock *sock) { - if (sock != NULL) { - free(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; + + LTTNG_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) +{ + LTTNG_ASSERT(sock); + LTTNG_ASSERT(port); + LTTNG_ASSERT(sock->sockaddr.type == LTTCOMM_INET || + sock->sockaddr.type == LTTCOMM_INET6); + LTTNG_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) +{ + LTTNG_ASSERT(sock); + LTTNG_ASSERT(sock->sockaddr.type == LTTCOMM_INET || + sock->sockaddr.type == LTTCOMM_INET6); + LTTNG_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; }