+++ /dev/null
-/*
- * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <inttypes.h>
-
-#include <common/common.h>
-#include <common/defaults.h>
-#include <common/compat/endian.h>
-#include <common/compat/string.h>
-#include <common/sessiond-comm/relayd.h>
-#include <common/index/ctf-index.h>
-#include <common/trace-chunk.h>
-#include <common/string-utils/format.h>
-
-#include "relayd.h"
-
-static
-bool relayd_supports_chunks(const struct lttcomm_relayd_sock *sock)
-{
- if (sock->major > 2) {
- return true;
- } else if (sock->major == 2 && sock->minor >= 11) {
- return true;
- }
- return false;
-}
-
-static
-bool relayd_supports_get_configuration(const struct lttcomm_relayd_sock *sock)
-{
- if (sock->major > 2) {
- return true;
- } else if (sock->major == 2 && sock->minor >= 12) {
- return true;
- }
- return false;
-}
-
-/*
- * Send command. Fill up the header and append the data.
- */
-static int send_command(struct lttcomm_relayd_sock *rsock,
- enum lttcomm_relayd_command cmd, const void *data, size_t size,
- int flags)
-{
- int ret;
- struct lttcomm_relayd_hdr header;
- char *buf;
- uint64_t buf_size = sizeof(header);
-
- if (rsock->sock.fd < 0) {
- return -ECONNRESET;
- }
-
- if (data) {
- buf_size += size;
- }
-
- buf = zmalloc(buf_size);
- if (buf == NULL) {
- PERROR("zmalloc relayd send command buf");
- ret = -1;
- goto alloc_error;
- }
-
- memset(&header, 0, sizeof(header));
- header.cmd = htobe32(cmd);
- header.data_size = htobe64(size);
-
- /* Zeroed for now since not used. */
- header.cmd_version = 0;
- header.circuit_id = 0;
-
- /* Prepare buffer to send. */
- memcpy(buf, &header, sizeof(header));
- if (data) {
- memcpy(buf + sizeof(header), data, size);
- }
-
- DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size);
- ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags);
- if (ret < 0) {
- PERROR("Failed to send command %d of size %" PRIu64,
- (int) cmd, buf_size);
- ret = -errno;
- goto error;
- }
-error:
- free(buf);
-alloc_error:
- return ret;
-}
-
-/*
- * Receive reply data on socket. This MUST be call after send_command or else
- * could result in unexpected behavior(s).
- */
-static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size)
-{
- int ret;
-
- if (rsock->sock.fd < 0) {
- return -ECONNRESET;
- }
-
- DBG3("Relayd waiting for reply of size %zu", size);
-
- ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0);
- if (ret <= 0 || ret != size) {
- if (ret == 0) {
- /* Orderly shutdown. */
- DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd);
- } else {
- DBG("Receiving reply failed on sock %d for size %zu with ret %d",
- rsock->sock.fd, size, ret);
- }
- /* Always return -1 here and the caller can use errno. */
- ret = -1;
- goto error;
- }
-
-error:
- return ret;
-}
-
-/*
- * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name,
- * hostname, and base_path) have no length restriction on the sender side.
- * Length for both payloads is stored in the msg struct. A new dynamic size
- * payload size is introduced.
- */
-static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock,
- const char *session_name, const char *hostname,
- const char *base_path, int session_live_timer,
- unsigned int snapshot, uint64_t sessiond_session_id,
- const lttng_uuid sessiond_uuid, const uint64_t *current_chunk_id,
- time_t creation_time, bool session_name_contains_creation_time,
- struct lttcomm_relayd_create_session_reply_2_11 *reply,
- char *output_path)
-{
- int ret;
- struct lttcomm_relayd_create_session_2_11 *msg = NULL;
- size_t session_name_len;
- size_t hostname_len;
- size_t base_path_len;
- size_t msg_length;
- char *dst;
-
- if (!base_path) {
- base_path = "";
- }
- /* The three names are sent with a '\0' delimiter between them. */
- session_name_len = strlen(session_name) + 1;
- hostname_len = strlen(hostname) + 1;
- base_path_len = strlen(base_path) + 1;
-
- msg_length = sizeof(*msg) + session_name_len + hostname_len + base_path_len;
- msg = zmalloc(msg_length);
- if (!msg) {
- PERROR("zmalloc create_session_2_11 command message");
- ret = -1;
- goto error;
- }
-
- LTTNG_ASSERT(session_name_len <= UINT32_MAX);
- msg->session_name_len = htobe32(session_name_len);
-
- LTTNG_ASSERT(hostname_len <= UINT32_MAX);
- msg->hostname_len = htobe32(hostname_len);
-
- LTTNG_ASSERT(base_path_len <= UINT32_MAX);
- msg->base_path_len = htobe32(base_path_len);
-
- dst = msg->names;
- if (lttng_strncpy(dst, session_name, session_name_len)) {
- ret = -1;
- goto error;
- }
- dst += session_name_len;
- if (lttng_strncpy(dst, hostname, hostname_len)) {
- ret = -1;
- goto error;
- }
- dst += hostname_len;
- if (lttng_strncpy(dst, base_path, base_path_len)) {
- ret = -1;
- goto error;
- }
-
- msg->live_timer = htobe32(session_live_timer);
- msg->snapshot = !!snapshot;
-
- lttng_uuid_copy(msg->sessiond_uuid, sessiond_uuid);
- msg->session_id = htobe64(sessiond_session_id);
- msg->session_name_contains_creation_time = session_name_contains_creation_time;
- if (current_chunk_id) {
- LTTNG_OPTIONAL_SET(&msg->current_chunk_id,
- htobe64(*current_chunk_id));
- }
-
- msg->creation_time = htobe64((uint64_t) creation_time);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0);
- if (ret < 0) {
- goto error;
- }
- /* Receive response */
- ret = recv_reply(rsock, reply, sizeof(*reply));
- if (ret < 0) {
- goto error;
- }
- reply->generic.session_id = be64toh(reply->generic.session_id);
- reply->generic.ret_code = be32toh(reply->generic.ret_code);
- reply->output_path_length = be32toh(reply->output_path_length);
- if (reply->output_path_length >= LTTNG_PATH_MAX) {
- ERR("Invalid session output path length in reply (%" PRIu32 " bytes) exceeds maximal allowed length (%d bytes)",
- reply->output_path_length, LTTNG_PATH_MAX);
- ret = -1;
- goto error;
- }
- ret = recv_reply(rsock, output_path, reply->output_path_length);
- if (ret < 0) {
- goto error;
- }
-error:
- free(msg);
- return ret;
-}
-/*
- * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to
- * support the live reading capability.
- */
-static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock,
- const char *session_name, const char *hostname,
- int session_live_timer, unsigned int snapshot,
- struct lttcomm_relayd_status_session *reply)
-{
- int ret;
- struct lttcomm_relayd_create_session_2_4 msg;
-
- if (lttng_strncpy(msg.session_name, session_name,
- sizeof(msg.session_name))) {
- ret = -1;
- goto error;
- }
- if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) {
- ret = -1;
- goto error;
- }
- msg.live_timer = htobe32(session_live_timer);
- msg.snapshot = htobe32(snapshot);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, reply, sizeof(*reply));
- if (ret < 0) {
- goto error;
- }
- reply->session_id = be64toh(reply->session_id);
- reply->ret_code = be32toh(reply->ret_code);
-error:
- return ret;
-}
-
-/*
- * RELAYD_CREATE_SESSION from 2.1 to 2.3.
- */
-static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock,
- struct lttcomm_relayd_status_session *reply)
-{
- int ret;
-
- /* Send command */
- ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, reply, sizeof(*reply));
- if (ret < 0) {
- goto error;
- }
- reply->session_id = be64toh(reply->session_id);
- reply->ret_code = be32toh(reply->ret_code);
-error:
- return ret;
-}
-
-/*
- * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and
- * set session_id of the relayd if we have a successful reply from the relayd.
- *
- * On success, return 0 else a negative value which is either an errno error or
- * a lttng error code from the relayd.
- */
-int relayd_create_session(struct lttcomm_relayd_sock *rsock,
- uint64_t *relayd_session_id,
- const char *session_name, const char *hostname,
- const char *base_path, int session_live_timer,
- unsigned int snapshot, uint64_t sessiond_session_id,
- const lttng_uuid sessiond_uuid,
- const uint64_t *current_chunk_id,
- time_t creation_time, bool session_name_contains_creation_time,
- char *output_path)
-{
- int ret;
- struct lttcomm_relayd_create_session_reply_2_11 reply = {};
-
- LTTNG_ASSERT(rsock);
- LTTNG_ASSERT(relayd_session_id);
-
- DBG("Relayd create session");
-
- if (rsock->minor < 4) {
- /* From 2.1 to 2.3 */
- ret = relayd_create_session_2_1(rsock, &reply.generic);
- } else if (rsock->minor >= 4 && rsock->minor < 11) {
- /* From 2.4 to 2.10 */
- ret = relayd_create_session_2_4(rsock, session_name,
- hostname, session_live_timer, snapshot,
- &reply.generic);
- } else {
- /* From 2.11 to ... */
- ret = relayd_create_session_2_11(rsock, session_name,
- hostname, base_path, session_live_timer, snapshot,
- sessiond_session_id, sessiond_uuid,
- current_chunk_id, creation_time,
- session_name_contains_creation_time,
- &reply, output_path);
- }
-
- if (ret < 0) {
- goto error;
- }
-
- /* Return session id or negative ret code. */
- if (reply.generic.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd create session replied error %d",
- reply.generic.ret_code);
- goto error;
- } else {
- ret = 0;
- *relayd_session_id = reply.generic.session_id;
- }
-
- DBG("Relayd session created with id %" PRIu64, reply.generic.session_id);
-
-error:
- return ret;
-}
-
-static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock,
- const char *channel_name, const char *pathname)
-{
- int ret;
- struct lttcomm_relayd_add_stream msg;
-
- memset(&msg, 0, sizeof(msg));
- if (lttng_strncpy(msg.channel_name, channel_name,
- sizeof(msg.channel_name))) {
- ret = -1;
- goto error;
- }
-
- if (lttng_strncpy(msg.pathname, pathname,
- sizeof(msg.pathname))) {
- ret = -1;
- goto error;
- }
-
- /* Send command */
- ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
- ret = -1;
- goto error;
- }
- ret = 0;
-error:
- return ret;
-}
-
-static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock,
- const char *channel_name, const char *pathname,
- uint64_t tracefile_size, uint64_t tracefile_count)
-{
- int ret;
- struct lttcomm_relayd_add_stream_2_2 msg;
-
- memset(&msg, 0, sizeof(msg));
- /* Compat with relayd 2.2 to 2.10 */
- if (lttng_strncpy(msg.channel_name, channel_name,
- sizeof(msg.channel_name))) {
- ret = -1;
- goto error;
- }
- if (lttng_strncpy(msg.pathname, pathname,
- sizeof(msg.pathname))) {
- ret = -1;
- goto error;
- }
- msg.tracefile_size = htobe64(tracefile_size);
- msg.tracefile_count = htobe64(tracefile_count);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
- ret = 0;
-error:
- return ret;
-}
-
-static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock,
- const char *channel_name, const char *pathname,
- uint64_t tracefile_size, uint64_t tracefile_count,
- uint64_t trace_archive_id)
-{
- int ret;
- struct lttcomm_relayd_add_stream_2_11 *msg = NULL;
- size_t channel_name_len;
- size_t pathname_len;
- size_t msg_length;
-
- /* The two names are sent with a '\0' delimiter between them. */
- channel_name_len = strlen(channel_name) + 1;
- pathname_len = strlen(pathname) + 1;
-
- msg_length = sizeof(*msg) + channel_name_len + pathname_len;
- msg = zmalloc(msg_length);
- if (!msg) {
- PERROR("zmalloc add_stream_2_11 command message");
- ret = -1;
- goto error;
- }
-
- LTTNG_ASSERT(channel_name_len <= UINT32_MAX);
- msg->channel_name_len = htobe32(channel_name_len);
-
- LTTNG_ASSERT(pathname_len <= UINT32_MAX);
- msg->pathname_len = htobe32(pathname_len);
-
- if (lttng_strncpy(msg->names, channel_name, channel_name_len)) {
- ret = -1;
- goto error;
- }
- if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) {
- ret = -1;
- goto error;
- }
-
- msg->tracefile_size = htobe64(tracefile_size);
- msg->tracefile_count = htobe64(tracefile_count);
- msg->trace_chunk_id = htobe64(trace_archive_id);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0);
- if (ret < 0) {
- goto error;
- }
- ret = 0;
-error:
- free(msg);
- return ret;
-}
-
-/*
- * Add stream on the relayd and assign stream handle to the stream_id argument.
- *
- * Chunks are not supported by relayd prior to 2.11, but are used to
- * internally between session daemon and consumer daemon to keep track
- * of the channel and stream output path.
- *
- * On success return 0 else return ret_code negative value.
- */
-int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name,
- const char *domain_name, const char *_pathname, uint64_t *stream_id,
- uint64_t tracefile_size, uint64_t tracefile_count,
- struct lttng_trace_chunk *trace_chunk)
-{
- int ret;
- struct lttcomm_relayd_status_stream reply;
- char pathname[RELAYD_COMM_LTTNG_PATH_MAX];
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
- LTTNG_ASSERT(channel_name);
- LTTNG_ASSERT(domain_name);
- LTTNG_ASSERT(_pathname);
- LTTNG_ASSERT(trace_chunk);
-
- DBG("Relayd adding stream for channel name %s", channel_name);
-
- /* Compat with relayd 2.1 */
- if (rsock->minor == 1) {
- /* For 2.1 */
- ret = relayd_add_stream_2_1(rsock, channel_name, _pathname);
-
- } else if (rsock->minor > 1 && rsock->minor < 11) {
- /* From 2.2 to 2.10 */
- ret = relayd_add_stream_2_2(rsock, channel_name, _pathname,
- tracefile_size, tracefile_count);
- } else {
- const char *separator;
- enum lttng_trace_chunk_status chunk_status;
- uint64_t chunk_id;
-
- if (_pathname[0] == '\0') {
- separator = "";
- } else {
- separator = "/";
- }
-
- ret = snprintf(pathname, RELAYD_COMM_LTTNG_PATH_MAX, "%s%s%s",
- domain_name, separator, _pathname);
- if (ret <= 0 || ret >= RELAYD_COMM_LTTNG_PATH_MAX) {
- ERR("Failed to format stream path: %s",
- ret <= 0 ? "formatting error" :
- "path exceeds maximal allowed length");
- ret = -1;
- goto error;
- }
-
- chunk_status = lttng_trace_chunk_get_id(trace_chunk,
- &chunk_id);
- LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
-
- /* From 2.11 to ...*/
- ret = relayd_add_stream_2_11(rsock, channel_name, pathname,
- tracefile_size, tracefile_count,
- chunk_id);
- }
-
- if (ret) {
- ret = -1;
- goto error;
- }
-
- /* Waiting for reply */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- /* Back to host bytes order. */
- reply.handle = be64toh(reply.handle);
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd add stream replied error %d", reply.ret_code);
- } else {
- /* Success */
- ret = 0;
- *stream_id = reply.handle;
- }
-
- DBG("Relayd stream added successfully with handle %" PRIu64,
- reply.handle);
-
-error:
- return ret;
-}
-
-/*
- * Inform the relay that all the streams for the current channel has been sent.
- *
- * On success return 0 else return ret_code negative value.
- */
-int relayd_streams_sent(struct lttcomm_relayd_sock *rsock)
-{
- int ret;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd sending streams sent.");
-
- /* This feature was introduced in 2.4, ignore it for earlier versions. */
- if (rsock->minor < 4) {
- ret = 0;
- goto end;
- }
-
- /* Send command */
- ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Waiting for reply */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- /* Back to host bytes order. */
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd streams sent replied error %d", reply.ret_code);
- goto error;
- } else {
- /* Success */
- ret = 0;
- }
-
- DBG("Relayd streams sent success");
-
-error:
-end:
- return ret;
-}
-
-/*
- * Check version numbers on the relayd.
- * If major versions are compatible, we assign minor_to_use to the
- * minor version of the procotol we are going to use for this session.
- *
- * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL
- * otherwise, or a negative value on network errors.
- */
-int relayd_version_check(struct lttcomm_relayd_sock *rsock)
-{
- int ret;
- struct lttcomm_relayd_version msg;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd version check for major.minor %u.%u", rsock->major,
- rsock->minor);
-
- memset(&msg, 0, sizeof(msg));
- /* Prepare network byte order before transmission. */
- msg.major = htobe32(rsock->major);
- msg.minor = htobe32(rsock->minor);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &msg, sizeof(msg));
- if (ret < 0) {
- goto error;
- }
-
- /* Set back to host bytes order */
- msg.major = be32toh(msg.major);
- msg.minor = be32toh(msg.minor);
-
- /*
- * Only validate the major version. If the other side is higher,
- * communication is not possible. Only major version equal can talk to each
- * other. If the minor version differs, the lowest version is used by both
- * sides.
- */
- if (msg.major != rsock->major) {
- /* Not compatible */
- ret = LTTNG_ERR_RELAYD_VERSION_FAIL;
- DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)",
- msg.major, rsock->major);
- goto error;
- }
-
- /*
- * If the relayd's minor version is higher, it will adapt to our version so
- * we can continue to use the latest relayd communication data structure.
- * If the received minor version is higher, the relayd should adapt to us.
- */
- if (rsock->minor > msg.minor) {
- rsock->minor = msg.minor;
- }
-
- /* Version number compatible */
- DBG2("Relayd version is compatible, using protocol version %u.%u",
- rsock->major, rsock->minor);
- ret = 0;
-
-error:
- return ret;
-}
-
-/*
- * Add stream on the relayd and assign stream handle to the stream_id argument.
- *
- * On success return 0 else return ret_code negative value.
- */
-int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len)
-{
- int ret;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd sending metadata of size %zu", len);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0);
- if (ret < 0) {
- goto error;
- }
-
- DBG2("Relayd metadata added successfully");
-
- /*
- * After that call, the metadata data MUST be sent to the relayd so the
- * receive size on the other end matches the len of the metadata packet
- * header. This is why we don't wait for a reply here.
- */
-
-error:
- return ret;
-}
-
-/*
- * Connect to relay daemon with an allocated lttcomm_relayd_sock.
- */
-int relayd_connect(struct lttcomm_relayd_sock *rsock)
-{
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- if (!rsock->sock.ops) {
- /*
- * Attempting a connect on a non-initialized socket.
- */
- return -ECONNRESET;
- }
-
- DBG3("Relayd connect ...");
-
- return rsock->sock.ops->connect(&rsock->sock);
-}
-
-/*
- * Close relayd socket with an allocated lttcomm_relayd_sock.
- *
- * If no socket operations are found, simply return 0 meaning that everything
- * is fine. Without operations, the socket can not possibly be opened or used.
- * This is possible if the socket was allocated but not created. However, the
- * caller could simply use it to store a valid file descriptor for instance
- * passed over a Unix socket and call this to cleanup but still without a valid
- * ops pointer.
- *
- * Return the close returned value. On error, a negative value is usually
- * returned back from close(2).
- */
-int relayd_close(struct lttcomm_relayd_sock *rsock)
-{
- int ret;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- /* An invalid fd is fine, return success. */
- if (rsock->sock.fd < 0) {
- ret = 0;
- goto end;
- }
-
- DBG3("Relayd closing socket %d", rsock->sock.fd);
-
- if (rsock->sock.ops) {
- ret = rsock->sock.ops->close(&rsock->sock);
- } else {
- /* Default call if no specific ops found. */
- ret = close(rsock->sock.fd);
- if (ret < 0) {
- PERROR("relayd_close default close");
- }
- }
- rsock->sock.fd = -1;
-
-end:
- return ret;
-}
-
-/*
- * Send data header structure to the relayd.
- */
-int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock,
- struct lttcomm_relayd_data_hdr *hdr, size_t size)
-{
- int ret;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
- LTTNG_ASSERT(hdr);
-
- if (rsock->sock.fd < 0) {
- return -ECONNRESET;
- }
-
- DBG3("Relayd sending data header of size %zu", size);
-
- /* Again, safety net */
- if (size == 0) {
- size = sizeof(struct lttcomm_relayd_data_hdr);
- }
-
- /* Only send data header. */
- ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0);
- if (ret < 0) {
- ret = -errno;
- goto error;
- }
-
- /*
- * The data MUST be sent right after that command for the receive on the
- * other end to match the size in the header.
- */
-
-error:
- return ret;
-}
-
-/*
- * Send close stream command to the relayd.
- */
-int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id,
- uint64_t last_net_seq_num)
-{
- int ret;
- struct lttcomm_relayd_close_stream msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd closing stream id %" PRIu64, stream_id);
-
- memset(&msg, 0, sizeof(msg));
- msg.stream_id = htobe64(stream_id);
- msg.last_net_seq_num = htobe64(last_net_seq_num);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd close stream replied error %d", reply.ret_code);
- } else {
- /* Success */
- ret = 0;
- }
-
- DBG("Relayd close stream id %" PRIu64 " successfully", stream_id);
-
-error:
- return ret;
-}
-
-/*
- * Check for data availability for a given stream id.
- *
- * Return 0 if NOT pending, 1 if so and a negative value on error.
- */
-int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id,
- uint64_t last_net_seq_num)
-{
- int ret;
- struct lttcomm_relayd_data_pending msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd data pending for stream id %" PRIu64, stream_id);
-
- memset(&msg, 0, sizeof(msg));
- msg.stream_id = htobe64(stream_id);
- msg.last_net_seq_num = htobe64(last_net_seq_num);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg,
- sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code >= LTTNG_OK) {
- ERR("Relayd data pending replied error %d", reply.ret_code);
- }
-
- /* At this point, the ret code is either 1 or 0 */
- ret = reply.ret_code;
-
- DBG("Relayd data is %s pending for stream id %" PRIu64,
- ret == 1 ? "" : "NOT", stream_id);
-
-error:
- return ret;
-}
-
-/*
- * Check on the relayd side for a quiescent state on the control socket.
- */
-int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock,
- uint64_t metadata_stream_id)
-{
- int ret;
- struct lttcomm_relayd_quiescent_control msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd checking quiescent control state");
-
- memset(&msg, 0, sizeof(msg));
- msg.stream_id = htobe64(metadata_stream_id);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd quiescent control replied error %d", reply.ret_code);
- goto error;
- }
-
- /* Control socket is quiescent */
- return 0;
-
-error:
- return ret;
-}
-
-/*
- * Begin a data pending command for a specific session id.
- */
-int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id)
-{
- int ret;
- struct lttcomm_relayd_begin_data_pending msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd begin data pending");
-
- memset(&msg, 0, sizeof(msg));
- msg.session_id = htobe64(id);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd begin data pending replied error %d", reply.ret_code);
- goto error;
- }
-
- return 0;
-
-error:
- return ret;
-}
-
-/*
- * End a data pending command for a specific session id.
- *
- * Return 0 on success and set is_data_inflight to 0 if no data is being
- * streamed or 1 if it is the case.
- */
-int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id,
- unsigned int *is_data_inflight)
-{
- int ret, recv_ret;
- struct lttcomm_relayd_end_data_pending msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- DBG("Relayd end data pending");
-
- memset(&msg, 0, sizeof(msg));
- msg.session_id = htobe64(id);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- recv_ret = be32toh(reply.ret_code);
- if (recv_ret < 0) {
- ret = recv_ret;
- goto error;
- }
-
- *is_data_inflight = recv_ret;
-
- DBG("Relayd end data pending is data inflight: %d", recv_ret);
-
- return 0;
-
-error:
- return ret;
-}
-
-/*
- * Send index to the relayd.
- */
-int relayd_send_index(struct lttcomm_relayd_sock *rsock,
- struct ctf_packet_index *index, uint64_t relay_stream_id,
- uint64_t net_seq_num)
-{
- int ret;
- struct lttcomm_relayd_index msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- if (rsock->minor < 4) {
- DBG("Not sending indexes before protocol 2.4");
- ret = 0;
- goto error;
- }
-
- DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id);
-
- memset(&msg, 0, sizeof(msg));
- msg.relay_stream_id = htobe64(relay_stream_id);
- msg.net_seq_num = htobe64(net_seq_num);
-
- /* The index is already in big endian. */
- msg.packet_size = index->packet_size;
- msg.content_size = index->content_size;
- msg.timestamp_begin = index->timestamp_begin;
- msg.timestamp_end = index->timestamp_end;
- msg.events_discarded = index->events_discarded;
- msg.stream_id = index->stream_id;
-
- if (rsock->minor >= 8) {
- msg.stream_instance_id = index->stream_instance_id;
- msg.packet_seq_num = index->packet_seq_num;
- }
-
- /* Send command */
- ret = send_command(rsock, RELAYD_SEND_INDEX, &msg,
- lttcomm_relayd_index_len(lttng_to_index_major(rsock->major,
- rsock->minor),
- lttng_to_index_minor(rsock->major, rsock->minor)),
- 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd send index replied error %d", reply.ret_code);
- } else {
- /* Success */
- ret = 0;
- }
-
-error:
- return ret;
-}
-
-/*
- * Ask the relay to reset the metadata trace file (regeneration).
- */
-int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock,
- uint64_t stream_id, uint64_t version)
-{
- int ret;
- struct lttcomm_relayd_reset_metadata msg;
- struct lttcomm_relayd_generic_reply reply;
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(rsock);
-
- /* Should have been prevented by the sessiond. */
- if (rsock->minor < 8) {
- ERR("Metadata regeneration unsupported before 2.8");
- ret = -1;
- goto error;
- }
-
- DBG("Relayd reset metadata stream id %" PRIu64, stream_id);
-
- memset(&msg, 0, sizeof(msg));
- msg.stream_id = htobe64(stream_id);
- msg.version = htobe64(version);
-
- /* Send command */
- ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
- goto error;
- }
-
- /* Receive response */
- ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
- if (ret < 0) {
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
-
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd reset metadata replied error %d", reply.ret_code);
- } else {
- /* Success */
- ret = 0;
- }
-
- DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id);
-
-error:
- return ret;
-}
-
-int relayd_rotate_streams(struct lttcomm_relayd_sock *sock,
- unsigned int stream_count, const uint64_t *new_chunk_id,
- const struct relayd_stream_rotation_position *positions)
-{
- int ret;
- unsigned int i;
- struct lttng_dynamic_buffer payload;
- struct lttcomm_relayd_generic_reply reply = {};
- const struct lttcomm_relayd_rotate_streams msg = {
- .stream_count = htobe32((uint32_t) stream_count),
- .new_chunk_id = (typeof(msg.new_chunk_id)) {
- .is_set = !!new_chunk_id,
- .value = htobe64(new_chunk_id ? *new_chunk_id : 0),
- },
- };
- char new_chunk_id_buf[MAX_INT_DEC_LEN(*new_chunk_id)] = {};
- const char *new_chunk_id_str;
-
- if (!relayd_supports_chunks(sock)) {
- DBG("Refusing to rotate remote streams: relayd does not support chunks");
- return 0;
- }
-
- lttng_dynamic_buffer_init(&payload);
-
- /* Code flow error. Safety net. */
- LTTNG_ASSERT(sock);
-
- if (new_chunk_id) {
- ret = snprintf(new_chunk_id_buf, sizeof(new_chunk_id_buf),
- "%" PRIu64, *new_chunk_id);
- if (ret == -1 || ret >= sizeof(new_chunk_id_buf)) {
- new_chunk_id_str = "formatting error";
- } else {
- new_chunk_id_str = new_chunk_id_buf;
- }
- } else {
- new_chunk_id_str = "none";
- }
-
- DBG("Preparing \"rotate streams\" command payload: new_chunk_id = %s, stream_count = %u",
- new_chunk_id_str, stream_count);
-
- ret = lttng_dynamic_buffer_append(&payload, &msg, sizeof(msg));
- if (ret) {
- ERR("Failed to allocate \"rotate streams\" command payload");
- goto error;
- }
-
- for (i = 0; i < stream_count; i++) {
- const struct relayd_stream_rotation_position *position =
- &positions[i];
- const struct lttcomm_relayd_stream_rotation_position comm_position = {
- .stream_id = htobe64(position->stream_id),
- .rotate_at_seq_num = htobe64(
- position->rotate_at_seq_num),
- };
-
- DBG("Rotate stream %" PRIu64 " at sequence number %" PRIu64,
- position->stream_id,
- position->rotate_at_seq_num);
- ret = lttng_dynamic_buffer_append(&payload, &comm_position,
- sizeof(comm_position));
- if (ret) {
- ERR("Failed to allocate \"rotate streams\" command payload");
- goto error;
- }
- }
-
- /* Send command. */
- ret = send_command(sock, RELAYD_ROTATE_STREAMS, payload.data,
- payload.size, 0);
- if (ret < 0) {
- ERR("Failed to send \"rotate stream\" command");
- goto error;
- }
-
- /* Receive response. */
- ret = recv_reply(sock, &reply, sizeof(reply));
- if (ret < 0) {
- ERR("Failed to receive \"rotate streams\" command reply");
- goto error;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd rotate streams replied error %d", reply.ret_code);
- } else {
- /* Success. */
- ret = 0;
- DBG("Relayd rotated streams successfully");
- }
-
-error:
- lttng_dynamic_buffer_reset(&payload);
- return ret;
-}
-
-int relayd_create_trace_chunk(struct lttcomm_relayd_sock *sock,
- struct lttng_trace_chunk *chunk)
-{
- int ret = 0;
- enum lttng_trace_chunk_status status;
- struct lttcomm_relayd_create_trace_chunk msg = {};
- struct lttcomm_relayd_generic_reply reply = {};
- struct lttng_dynamic_buffer payload;
- uint64_t chunk_id;
- time_t creation_timestamp;
- const char *chunk_name;
- size_t chunk_name_length;
- bool overridden_name;
-
- lttng_dynamic_buffer_init(&payload);
-
- if (!relayd_supports_chunks(sock)) {
- DBG("Refusing to create remote trace chunk: relayd does not support chunks");
- goto end;
- }
-
- status = lttng_trace_chunk_get_id(chunk, &chunk_id);
- if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_chunk_get_creation_timestamp(
- chunk, &creation_timestamp);
- if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_chunk_get_name(
- chunk, &chunk_name, &overridden_name);
- if (status != LTTNG_TRACE_CHUNK_STATUS_OK &&
- status != LTTNG_TRACE_CHUNK_STATUS_NONE) {
- ret = -1;
- goto end;
- }
-
- chunk_name_length = overridden_name ? (strlen(chunk_name) + 1) : 0;
- msg = (typeof(msg)){
- .chunk_id = htobe64(chunk_id),
- .creation_timestamp = htobe64((uint64_t) creation_timestamp),
- .override_name_length = htobe32((uint32_t) chunk_name_length),
- };
-
- ret = lttng_dynamic_buffer_append(&payload, &msg, sizeof(msg));
- if (ret) {
- goto end;
- }
- if (chunk_name_length) {
- ret = lttng_dynamic_buffer_append(
- &payload, chunk_name, chunk_name_length);
- if (ret) {
- goto end;
- }
- }
-
- ret = send_command(sock, RELAYD_CREATE_TRACE_CHUNK, payload.data,
- payload.size, 0);
- if (ret < 0) {
- ERR("Failed to send trace chunk creation command to relay daemon");
- goto end;
- }
-
- ret = recv_reply(sock, &reply, sizeof(reply));
- if (ret < 0) {
- ERR("Failed to receive relay daemon trace chunk creation command reply");
- goto end;
- }
-
- reply.ret_code = be32toh(reply.ret_code);
- if (reply.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd trace chunk create replied error %d",
- reply.ret_code);
- } else {
- ret = 0;
- DBG("Relayd successfully created trace chunk: chunk_id = %" PRIu64,
- chunk_id);
- }
-
-end:
- lttng_dynamic_buffer_reset(&payload);
- return ret;
-}
-
-int relayd_close_trace_chunk(struct lttcomm_relayd_sock *sock,
- struct lttng_trace_chunk *chunk,
- char *path)
-{
- int ret = 0;
- enum lttng_trace_chunk_status status;
- struct lttcomm_relayd_close_trace_chunk msg = {};
- struct lttcomm_relayd_close_trace_chunk_reply reply = {};
- uint64_t chunk_id;
- time_t close_timestamp;
- LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {};
-
- if (!relayd_supports_chunks(sock)) {
- DBG("Refusing to close remote trace chunk: relayd does not support chunks");
- goto end;
- }
-
- status = lttng_trace_chunk_get_id(chunk, &chunk_id);
- if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
- ERR("Failed to get trace chunk id");
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp);
- if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
- ERR("Failed to get trace chunk close timestamp");
- ret = -1;
- goto end;
- }
-
- status = lttng_trace_chunk_get_close_command(chunk,
- &close_command.value);
- switch (status) {
- case LTTNG_TRACE_CHUNK_STATUS_OK:
- close_command.is_set = 1;
- break;
- case LTTNG_TRACE_CHUNK_STATUS_NONE:
- break;
- default:
- ERR("Failed to get trace chunk close command");
- ret = -1;
- goto end;
- }
-
- msg = (typeof(msg)){
- .chunk_id = htobe64(chunk_id),
- .close_timestamp = htobe64((uint64_t) close_timestamp),
- .close_command = {
- .value = htobe32((uint32_t) close_command.value),
- .is_set = close_command.is_set,
- },
- };
-
- ret = send_command(sock, RELAYD_CLOSE_TRACE_CHUNK, &msg, sizeof(msg),
- 0);
- if (ret < 0) {
- ERR("Failed to send trace chunk close command to relay daemon");
- goto end;
- }
-
- ret = recv_reply(sock, &reply, sizeof(reply));
- if (ret < 0) {
- ERR("Failed to receive relay daemon trace chunk close command reply");
- goto end;
- }
-
- reply.path_length = be32toh(reply.path_length);
- if (reply.path_length >= LTTNG_PATH_MAX) {
- ERR("Chunk path too long");
- ret = -1;
- goto end;
- }
-
- ret = recv_reply(sock, path, reply.path_length);
- if (ret < 0) {
- ERR("Failed to receive relay daemon trace chunk close command reply");
- goto end;
- }
- if (path[reply.path_length - 1] != '\0') {
- ERR("Invalid trace chunk path returned by relay daemon (not null-terminated)");
- ret = -1;
- goto end;
- }
-
- reply.generic.ret_code = be32toh(reply.generic.ret_code);
- if (reply.generic.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd trace chunk close replied error %d",
- reply.generic.ret_code);
- } else {
- ret = 0;
- DBG("Relayd successfully closed trace chunk: chunk_id = %" PRIu64,
- chunk_id);
- }
-end:
- return ret;
-}
-
-int relayd_trace_chunk_exists(struct lttcomm_relayd_sock *sock,
- uint64_t chunk_id, bool *chunk_exists)
-{
- int ret = 0;
- struct lttcomm_relayd_trace_chunk_exists msg = {};
- struct lttcomm_relayd_trace_chunk_exists_reply reply = {};
-
- if (!relayd_supports_chunks(sock)) {
- DBG("Refusing to check for trace chunk existence: relayd does not support chunks");
- /* The chunk will never exist */
- *chunk_exists = false;
- goto end;
- }
-
- msg = (typeof(msg)){
- .chunk_id = htobe64(chunk_id),
- };
-
- ret = send_command(sock, RELAYD_TRACE_CHUNK_EXISTS, &msg, sizeof(msg),
- 0);
- if (ret < 0) {
- ERR("Failed to send trace chunk exists command to relay daemon");
- goto end;
- }
-
- ret = recv_reply(sock, &reply, sizeof(reply));
- if (ret < 0) {
- ERR("Failed to receive relay daemon trace chunk close command reply");
- goto end;
- }
-
- reply.generic.ret_code = be32toh(reply.generic.ret_code);
- if (reply.generic.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd trace chunk close replied error %d",
- reply.generic.ret_code);
- } else {
- ret = 0;
- DBG("Relayd successfully checked trace chunk existence: chunk_id = %" PRIu64
- ", exists = %s", chunk_id,
- reply.trace_chunk_exists ? "true" : "false");
- *chunk_exists = !!reply.trace_chunk_exists;
- }
-end:
- return ret;
-}
-
-int relayd_get_configuration(struct lttcomm_relayd_sock *sock,
- uint64_t query_flags,
- uint64_t *result_flags)
-{
- int ret = 0;
- struct lttcomm_relayd_get_configuration msg = (typeof(msg)) {
- .query_flags = htobe64(query_flags),
- };
- struct lttcomm_relayd_get_configuration_reply reply = {};
-
- if (!relayd_supports_get_configuration(sock)) {
- DBG("Refusing to get relayd configuration (unsupported by relayd)");
- if (query_flags) {
- ret = -1;
- goto end;
- }
- *result_flags = 0;
- goto end;
- }
-
- ret = send_command(sock, RELAYD_GET_CONFIGURATION, &msg, sizeof(msg),
- 0);
- if (ret < 0) {
- ERR("Failed to send get configuration command to relay daemon");
- goto end;
- }
-
- ret = recv_reply(sock, &reply, sizeof(reply));
- if (ret < 0) {
- ERR("Failed to receive relay daemon get configuration command reply");
- goto end;
- }
-
- reply.generic.ret_code = be32toh(reply.generic.ret_code);
- if (reply.generic.ret_code != LTTNG_OK) {
- ret = -1;
- ERR("Relayd get configuration replied error %d",
- reply.generic.ret_code);
- } else {
- reply.relayd_configuration_flags =
- be64toh(reply.relayd_configuration_flags);
- ret = 0;
- DBG("Relayd successfully got configuration: query_flags = %" PRIu64
- ", results_flags = %" PRIu64, query_flags,
- reply.relayd_configuration_flags);
- *result_flags = reply.relayd_configuration_flags;
- }
-end:
- return ret;
-}
projects / lttng-tools.git / blobdiff