From: Simon Marchi Date: Wed, 22 Sep 2021 12:16:19 +0000 (-0400) Subject: common: compile libsessiond-common as C++ X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=64efa44ea4babee85a5d855f62ca168d6aed69d0;p=lttng-tools.git common: compile libsessiond-common as C++ Convert lttcomm_readable_code to a switch in a function, and rework lttcomm_get_readable_code a bit. That changes the behavior a bit, but probably not in a meaningful way. Change-Id: I92da95f5d27de9df176835e820dd81ab93fb7b89 Signed-off-by: Simon Marchi Signed-off-by: Jérémie Galarneau --- diff --git a/src/common/sessiond-comm/Makefile.am b/src/common/sessiond-comm/Makefile.am index d026651a6..8086cb010 100644 --- a/src/common/sessiond-comm/Makefile.am +++ b/src/common/sessiond-comm/Makefile.am @@ -2,6 +2,12 @@ noinst_LTLIBRARIES = libsessiond-comm.la -libsessiond_comm_la_SOURCES = sessiond-comm.c sessiond-comm.h \ - inet.c inet.h inet6.c inet6.h \ - relayd.h agent.h +libsessiond_comm_la_SOURCES = \ + agent.h \ + inet.cpp \ + inet.h \ + inet6.cpp \ + inet6.h \ + relayd.h \ + sessiond-comm.cpp \ + sessiond-comm.h diff --git a/src/common/sessiond-comm/inet.c b/src/common/sessiond-comm/inet.c deleted file mode 100644 index 93fb19bb5..000000000 --- a/src/common/sessiond-comm/inet.c +++ /dev/null @@ -1,533 +0,0 @@ -/* - * Copyright (C) 2012 David Goulet - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include "inet.h" - -#define RECONNECT_DELAY 200 /* ms */ - -/* - * INET protocol operations. - */ -static const struct lttcomm_proto_ops inet_ops = { - .bind = lttcomm_bind_inet_sock, - .close = lttcomm_close_inet_sock, - .connect = lttcomm_connect_inet_sock, - .accept = lttcomm_accept_inet_sock, - .listen = lttcomm_listen_inet_sock, - .recvmsg = lttcomm_recvmsg_inet_sock, - .sendmsg = lttcomm_sendmsg_inet_sock, -}; - -unsigned long lttcomm_inet_tcp_timeout; - -/* - * Creates an PF_INET socket. - */ -int lttcomm_create_inet_sock(struct lttcomm_sock *sock, int type, int proto) -{ - int val = 1, ret; - unsigned long timeout; - - /* Create server socket */ - if ((sock->fd = socket(PF_INET, type, proto)) < 0) { - PERROR("socket inet"); - goto error; - } - - sock->ops = &inet_ops; - - /* - * Set socket option to reuse the address. - */ - ret = setsockopt(sock->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int)); - if (ret < 0) { - PERROR("setsockopt inet"); - 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_inet_sock(struct lttcomm_sock *sock) -{ - struct sockaddr_in sockaddr = sock->sockaddr.addr.sin; - - return bind(sock->fd, &sockaddr, sizeof(sockaddr)); -} - -static -int connect_no_timeout(struct lttcomm_sock *sock) -{ - struct sockaddr_in sockaddr = sock->sockaddr.addr.sin; - - 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_in 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.sin; - 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_inet_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"); - goto error_connect; - } - - return ret; - -error_connect: - closeret = close(sock->fd); - if (closeret) { - PERROR("close inet"); - } - - 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_inet_sock(struct lttcomm_sock *sock) -{ - int new_fd; - socklen_t len; - struct lttcomm_sock *new_sock; - unsigned long timeout; - struct sockaddr_in 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 inet"); - goto error; - } - new_sock->sockaddr.addr.sin = new_addr; - timeout = lttcomm_get_network_timeout(); - if (timeout) { - int ret; - - ret = lttcomm_setsockopt_rcv_timeout(new_fd, timeout); - if (ret) { - goto error_close; - } - ret = lttcomm_setsockopt_snd_timeout(new_fd, timeout); - if (ret) { - goto error_close; - } - } - - new_sock->fd = new_fd; - new_sock->ops = &inet_ops; - -end: - return new_sock; - -error_close: - if (close(new_fd) < 0) { - PERROR("accept inet close fd"); - } - -error: - free(new_sock); - return NULL; -} - -/* - * Make the socket listen using LTTNG_SESSIOND_COMM_MAX_LISTEN. - */ -int lttcomm_listen_inet_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 inet"); - } - -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_inet_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_in addr = sock->sockaddr.addr.sin; - - 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.sin); - - 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) { - if (errno == EAGAIN && flags & MSG_DONTWAIT) { - /* - * EAGAIN is expected in non-blocking mode and should - * not be reported as an error. Moreover, if no data - * was read, 0 must not be returned as it would be - * interpreted as an orderly shutdown of the socket. - */ - goto end; - } - 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_inet_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_in addr = sock->sockaddr.addr.sin; - - msg.msg_name = (struct sockaddr *) &addr; - msg.msg_namelen = sizeof(sock->sockaddr.addr.sin); - 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 inet"); - } - } - - return ret; -} - -/* - * Shutdown cleanly and close. - */ -int lttcomm_close_inet_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 inet"); - } - - /* Mark socket */ - sock->fd = -1; - - return ret; -} - -/* - * Return value read from /proc or else 0 if value is not found. - */ -static unsigned long read_proc_value(const char *path) -{ - int ret, fd; - ssize_t size_ret; - long r_val; - unsigned long val = 0; - char buf[64]; - - fd = open(path, O_RDONLY); - if (fd < 0) { - goto error; - } - - size_ret = lttng_read(fd, buf, sizeof(buf)); - /* - * Allow reading a file smaller than buf, but keep space for - * final \0. - */ - if (size_ret < 0 || size_ret >= sizeof(buf)) { - PERROR("read proc failed"); - goto error_close; - } - buf[size_ret] = '\0'; - - errno = 0; - r_val = strtol(buf, NULL, 10); - if (errno != 0 || r_val < -1L) { - val = 0; - goto error_close; - } else { - if (r_val > 0) { - val = r_val; - } - } - -error_close: - ret = close(fd); - if (ret) { - PERROR("close /proc value"); - } -error: - return val; -} - -void lttcomm_inet_init(void) -{ - unsigned long syn_retries, fin_timeout, syn_timeout, env; - - env = lttcomm_get_network_timeout(); - if (env) { - lttcomm_inet_tcp_timeout = env; - goto end; - } - - /* Assign default value and see if we can change it. */ - lttcomm_inet_tcp_timeout = DEFAULT_INET_TCP_TIMEOUT; - - syn_retries = read_proc_value(LTTCOMM_INET_PROC_SYN_RETRIES_PATH); - fin_timeout = read_proc_value(LTTCOMM_INET_PROC_FIN_TIMEOUT_PATH); - - syn_timeout = syn_retries * LTTCOMM_INET_SYN_TIMEOUT_FACTOR; - - /* - * Get the maximum between the two possible timeout value and use that to - * get the maximum with the default timeout. - */ - lttcomm_inet_tcp_timeout = max_t(unsigned long, - max_t(unsigned long, syn_timeout, fin_timeout), - lttcomm_inet_tcp_timeout); - -end: - DBG("TCP inet operation timeout set to %lu sec", lttcomm_inet_tcp_timeout); -} diff --git a/src/common/sessiond-comm/inet.cpp b/src/common/sessiond-comm/inet.cpp new file mode 100644 index 000000000..20eb613a8 --- /dev/null +++ b/src/common/sessiond-comm/inet.cpp @@ -0,0 +1,533 @@ +/* + * Copyright (C) 2012 David Goulet + * + * SPDX-License-Identifier: GPL-2.0-only + * + */ + +#define _LGPL_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "inet.h" + +#define RECONNECT_DELAY 200 /* ms */ + +/* + * INET protocol operations. + */ +static const struct lttcomm_proto_ops inet_ops = { + .bind = lttcomm_bind_inet_sock, + .close = lttcomm_close_inet_sock, + .connect = lttcomm_connect_inet_sock, + .accept = lttcomm_accept_inet_sock, + .listen = lttcomm_listen_inet_sock, + .recvmsg = lttcomm_recvmsg_inet_sock, + .sendmsg = lttcomm_sendmsg_inet_sock, +}; + +unsigned long lttcomm_inet_tcp_timeout; + +/* + * Creates an PF_INET socket. + */ +int lttcomm_create_inet_sock(struct lttcomm_sock *sock, int type, int proto) +{ + int val = 1, ret; + unsigned long timeout; + + /* Create server socket */ + if ((sock->fd = socket(PF_INET, type, proto)) < 0) { + PERROR("socket inet"); + goto error; + } + + sock->ops = &inet_ops; + + /* + * Set socket option to reuse the address. + */ + ret = setsockopt(sock->fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int)); + if (ret < 0) { + PERROR("setsockopt inet"); + 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_inet_sock(struct lttcomm_sock *sock) +{ + struct sockaddr_in sockaddr = sock->sockaddr.addr.sin; + + return bind(sock->fd, (struct sockaddr *) &sockaddr, sizeof(sockaddr)); +} + +static +int connect_no_timeout(struct lttcomm_sock *sock) +{ + struct sockaddr_in sockaddr = sock->sockaddr.addr.sin; + + return connect(sock->fd, (struct sockaddr *) &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_in 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.sin; + connect_ret = connect(sock->fd, (struct sockaddr *) &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_inet_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"); + goto error_connect; + } + + return ret; + +error_connect: + closeret = close(sock->fd); + if (closeret) { + PERROR("close inet"); + } + + 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_inet_sock(struct lttcomm_sock *sock) +{ + int new_fd; + socklen_t len; + struct lttcomm_sock *new_sock; + unsigned long timeout; + struct sockaddr_in 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 inet"); + goto error; + } + new_sock->sockaddr.addr.sin = new_addr; + timeout = lttcomm_get_network_timeout(); + if (timeout) { + int ret; + + ret = lttcomm_setsockopt_rcv_timeout(new_fd, timeout); + if (ret) { + goto error_close; + } + ret = lttcomm_setsockopt_snd_timeout(new_fd, timeout); + if (ret) { + goto error_close; + } + } + + new_sock->fd = new_fd; + new_sock->ops = &inet_ops; + +end: + return new_sock; + +error_close: + if (close(new_fd) < 0) { + PERROR("accept inet close fd"); + } + +error: + free(new_sock); + return NULL; +} + +/* + * Make the socket listen using LTTNG_SESSIOND_COMM_MAX_LISTEN. + */ +int lttcomm_listen_inet_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 inet"); + } + +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_inet_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_in addr = sock->sockaddr.addr.sin; + + 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.sin); + + 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 = ((char *) 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) { + if (errno == EAGAIN && flags & MSG_DONTWAIT) { + /* + * EAGAIN is expected in non-blocking mode and should + * not be reported as an error. Moreover, if no data + * was read, 0 must not be returned as it would be + * interpreted as an orderly shutdown of the socket. + */ + goto end; + } + 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_inet_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_in addr = sock->sockaddr.addr.sin; + + msg.msg_name = (struct sockaddr *) &addr; + msg.msg_namelen = sizeof(sock->sockaddr.addr.sin); + 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 inet"); + } + } + + return ret; +} + +/* + * Shutdown cleanly and close. + */ +int lttcomm_close_inet_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 inet"); + } + + /* Mark socket */ + sock->fd = -1; + + return ret; +} + +/* + * Return value read from /proc or else 0 if value is not found. + */ +static unsigned long read_proc_value(const char *path) +{ + int ret, fd; + ssize_t size_ret; + long r_val; + unsigned long val = 0; + char buf[64]; + + fd = open(path, O_RDONLY); + if (fd < 0) { + goto error; + } + + size_ret = lttng_read(fd, buf, sizeof(buf)); + /* + * Allow reading a file smaller than buf, but keep space for + * final \0. + */ + if (size_ret < 0 || size_ret >= sizeof(buf)) { + PERROR("read proc failed"); + goto error_close; + } + buf[size_ret] = '\0'; + + errno = 0; + r_val = strtol(buf, NULL, 10); + if (errno != 0 || r_val < -1L) { + val = 0; + goto error_close; + } else { + if (r_val > 0) { + val = r_val; + } + } + +error_close: + ret = close(fd); + if (ret) { + PERROR("close /proc value"); + } +error: + return val; +} + +void lttcomm_inet_init(void) +{ + unsigned long syn_retries, fin_timeout, syn_timeout, env; + + env = lttcomm_get_network_timeout(); + if (env) { + lttcomm_inet_tcp_timeout = env; + goto end; + } + + /* Assign default value and see if we can change it. */ + lttcomm_inet_tcp_timeout = DEFAULT_INET_TCP_TIMEOUT; + + syn_retries = read_proc_value(LTTCOMM_INET_PROC_SYN_RETRIES_PATH); + fin_timeout = read_proc_value(LTTCOMM_INET_PROC_FIN_TIMEOUT_PATH); + + syn_timeout = syn_retries * LTTCOMM_INET_SYN_TIMEOUT_FACTOR; + + /* + * Get the maximum between the two possible timeout value and use that to + * get the maximum with the default timeout. + */ + lttcomm_inet_tcp_timeout = std::max(std::max(syn_timeout, fin_timeout), + lttcomm_inet_tcp_timeout); + +end: + DBG("TCP inet operation timeout set to %lu sec", lttcomm_inet_tcp_timeout); +} diff --git a/src/common/sessiond-comm/inet6.c b/src/common/sessiond-comm/inet6.c deleted file mode 100644 index 8c0d0b795..000000000 --- a/src/common/sessiond-comm/inet6.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * Copyright (C) 2012 David Goulet - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#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; -} diff --git a/src/common/sessiond-comm/inet6.cpp b/src/common/sessiond-comm/inet6.cpp new file mode 100644 index 000000000..adabebfae --- /dev/null +++ b/src/common/sessiond-comm/inet6.cpp @@ -0,0 +1,423 @@ +/* + * Copyright (C) 2012 David Goulet + * + * SPDX-License-Identifier: GPL-2.0-only + * + */ + +#define _LGPL_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#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, (struct sockaddr *) &sockaddr, sizeof(sockaddr)); +} + +static +int connect_no_timeout(struct lttcomm_sock *sock) +{ + struct sockaddr_in6 sockaddr = sock->sockaddr.addr.sin6; + return connect(sock->fd, (struct sockaddr *) &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, (struct sockaddr *) &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 = ((char *) 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; +} diff --git a/src/common/sessiond-comm/sessiond-comm.c b/src/common/sessiond-comm/sessiond-comm.c deleted file mode 100644 index f3680c139..000000000 --- a/src/common/sessiond-comm/sessiond-comm.c +++ /dev/null @@ -1,462 +0,0 @@ -/* - * Copyright (C) 2011 David Goulet - * Copyright (C) 2011 Mathieu Desnoyers - * - * SPDX-License-Identifier: GPL-2.0-only - * - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include "sessiond-comm.h" - -/* For Unix socket */ -#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 }, -}; - -/* - * 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; -} diff --git a/src/common/sessiond-comm/sessiond-comm.cpp b/src/common/sessiond-comm/sessiond-comm.cpp new file mode 100644 index 000000000..6a011b8b4 --- /dev/null +++ b/src/common/sessiond-comm/sessiond-comm.cpp @@ -0,0 +1,513 @@ +/* + * Copyright (C) 2011 David Goulet + * Copyright (C) 2011 Mathieu Desnoyers + * + * SPDX-License-Identifier: GPL-2.0-only + * + */ + +#define _LGPL_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "sessiond-comm.h" + +/* For Unix socket */ +#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 }, +}; + +/* + * Human readable error message. + */ +static +const char *lttcomm_return_code_str(lttcomm_return_code code) { + switch (code) { + case LTTCOMM_CONSUMERD_SUCCESS: + return "consumerd success"; + case LTTCOMM_CONSUMERD_COMMAND_SOCK_READY: + return "consumerd command socket ready"; + case LTTCOMM_CONSUMERD_SUCCESS_RECV_FD: + return "consumerd success on receiving fds"; + case LTTCOMM_CONSUMERD_ERROR_RECV_FD: + return "consumerd error on receiving fds"; + case LTTCOMM_CONSUMERD_ERROR_RECV_CMD: + return "consumerd error on receiving command"; + case LTTCOMM_CONSUMERD_POLL_ERROR: + return "consumerd error in polling thread"; + case LTTCOMM_CONSUMERD_POLL_NVAL: + return "consumerd polling on closed fd"; + case LTTCOMM_CONSUMERD_POLL_HUP: + return "consumerd all fd hung up"; + case LTTCOMM_CONSUMERD_EXIT_SUCCESS: + return "consumerd exiting normally"; + case LTTCOMM_CONSUMERD_EXIT_FAILURE: + return "consumerd exiting on error"; + case LTTCOMM_CONSUMERD_OUTFD_ERROR: + return "consumerd error opening the tracefile"; + case LTTCOMM_CONSUMERD_SPLICE_EBADF: + return "consumerd splice EBADF"; + case LTTCOMM_CONSUMERD_SPLICE_EINVAL: + return "consumerd splice EINVAL"; + case LTTCOMM_CONSUMERD_SPLICE_ENOMEM: + return "consumerd splice ENOMEM"; + case LTTCOMM_CONSUMERD_SPLICE_ESPIPE: + return "consumerd splice ESPIPE"; + case LTTCOMM_CONSUMERD_ENOMEM: + return "consumerd is out of memory"; + case LTTCOMM_CONSUMERD_ERROR_METADATA: + return "consumerd error with metadata"; + case LTTCOMM_CONSUMERD_FATAL: + return "consumerd fatal error"; + case LTTCOMM_CONSUMERD_RELAYD_FAIL: + return "consumerd error on remote relayd"; + case LTTCOMM_CONSUMERD_CHANNEL_FAIL: + return "consumerd channel creation fail"; + case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: + return "consumerd channel not found"; + case LTTCOMM_CONSUMERD_ALREADY_SET: + return "consumerd resource already set"; + case LTTCOMM_CONSUMERD_ROTATION_FAIL: + return "consumerd rotation failed"; + case LTTCOMM_CONSUMERD_SNAPSHOT_FAILED: + return "consumerd snapshot has failed"; + case LTTCOMM_CONSUMERD_CREATE_TRACE_CHUNK_FAILED: + return "consumerd trace chunk creation failed"; + case LTTCOMM_CONSUMERD_CLOSE_TRACE_CHUNK_FAILED: + return "consumerd trace chunk closing failed"; + case LTTCOMM_CONSUMERD_INVALID_PARAMETERS: + return "consumerd invalid parameters"; + case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: + return "consumerd trace chunk exists on consumer daemon"; + case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: + return "consumedd trace chunk exists on relay daemon"; + case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: + return "consumerd unknown trace chunk"; + case LTTCOMM_CONSUMERD_RELAYD_CLEAR_DISALLOWED: + return "consumed relayd does not accept clear command"; + case LTTCOMM_CONSUMERD_UNKNOWN_ERROR: + return "consumerd unknown error"; + case LTTCOMM_NR: + abort(); + } + + abort(); +}; + +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 = (lttcomm_return_code) -code; + + if (code != LTTCOMM_CONSUMERD_SUCCESS && + !(code >= LTTCOMM_CONSUMERD_COMMAND_SOCK_READY && code < LTTCOMM_NR)) { + code = LTTCOMM_CONSUMERD_UNKNOWN_ERROR; + } + + return lttcomm_return_code_str(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 = (lttcomm_sock *) zmalloc(sizeof(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((lttcomm_sock_proto) _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 = (lttcomm_relayd_sock *) 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; +} diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h index 65020bbfc..b155fe4ad 100644 --- a/src/common/sessiond-comm/sessiond-comm.h +++ b/src/common/sessiond-comm/sessiond-comm.h @@ -52,11 +52,6 @@ extern "C" { #define LTTCOMM_MAX_SEND_FDS 16 #endif -/* - * Get the error code index from 0 since LTTCOMM_OK start at 1000 - */ -#define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) - enum lttcomm_sessiond_command { /* Tracer command */ LTTNG_ADD_CONTEXT = 0, @@ -279,7 +274,7 @@ enum lttcomm_return_code { LTTCOMM_CONSUMERD_ROTATION_FAIL, /* Rotation has failed. */ LTTCOMM_CONSUMERD_SNAPSHOT_FAILED, /* snapshot has failed. */ LTTCOMM_CONSUMERD_CREATE_TRACE_CHUNK_FAILED,/* Trace chunk creation failed. */ - LTTCOMM_CONSUMERD_CLOSE_TRACE_CHUNK_FAILED, /* Trace chunk creation failed. */ + LTTCOMM_CONSUMERD_CLOSE_TRACE_CHUNK_FAILED, /* Trace chunk close failed. */ LTTCOMM_CONSUMERD_INVALID_PARAMETERS, /* Invalid parameters. */ LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL, /* Trace chunk exists on consumer daemon. */ LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE,/* Trace chunk exists on relay daemon. */