+++ /dev/null
-/*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@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 <inttypes.h>
-
-#include <common/common.h>
-#include <common/compat/errno.h>
-
-#include "sessiond-comm.h"
-
-/* For Unix socket */
-#include <common/unix.h>
-/* 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 },
-};
-
-/*
- * 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",
- [ 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.
- */
-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.
- */
-int lttcomm_create_sock(struct lttcomm_sock *sock)
-{
- int ret, _sock_type, _sock_proto, domain;
-
- LTTNG_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.
- */
-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.
- */
-struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src)
-{
- struct lttcomm_sock *sock;
-
- /* Safety net */
- LTTNG_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.
- */
-void lttcomm_copy_sock(struct lttcomm_sock *dst, struct lttcomm_sock *src)
-{
- /* Safety net */
- LTTNG_ASSERT(dst);
- LTTNG_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.
- */
-int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
- const char *ip, unsigned int port)
-{
- int ret;
-
- LTTNG_ASSERT(sockaddr);
- LTTNG_ASSERT(ip);
- LTTNG_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.
- */
-int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
- const char *ip, unsigned int port)
-{
- int ret;
-
- LTTNG_ASSERT(sockaddr);
- LTTNG_ASSERT(ip);
- LTTNG_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.
- */
-struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri)
-{
- int ret;
- int _sock_proto;
- struct lttcomm_sock *sock = NULL;
-
- /* Safety net */
- LTTNG_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.
- */
-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;
-
- 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.
- */
-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.
- */
-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;
-}
-
-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;
-}
-
-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;
-}
-
-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;
- }
- }
- }
-}
-
-unsigned long lttcomm_get_network_timeout(void)
-{
- return network_timeout;
-}
projects / lttng-tools.git / blobdiff