* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <assert.h>
#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_sock *sock,
- enum lttcomm_sessiond_command cmd, void *data, size_t size,
+static int send_command(struct lttcomm_relayd_sock *rsock,
+ enum lttcomm_relayd_command cmd, const void *data, size_t size,
int flags)
{
int ret;
char *buf;
uint64_t buf_size = sizeof(header);
+ if (rsock->sock.fd < 0) {
+ return -ECONNRESET;
+ }
+
if (data) {
buf_size += size;
}
goto alloc_error;
}
+ memset(&header, 0, sizeof(header));
header.cmd = htobe32(cmd);
header.data_size = htobe64(size);
memcpy(buf + sizeof(header), data, size);
}
- ret = sock->ops->sendmsg(sock, buf, buf_size, flags);
+ 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;
}
-
- DBG3("Relayd sending command %d", cmd);
-
error:
free(buf);
alloc_error:
* 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_sock *sock, void *data, size_t size)
+static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size)
{
int ret;
- DBG3("Relayd waiting for reply...");
+ if (rsock->sock.fd < 0) {
+ return -ECONNRESET;
+ }
- ret = sock->ops->recvmsg(sock, data, size, 0);
- if (ret < 0) {
+ 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;
}
return ret;
}
-#if 0
/*
- * Create session on the relayd.
- *
- * On error, return ret_code negative value else return 0.
+ * 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.
*/
-int relayd_create_session(struct lttcomm_sock *sock, const char *hostname,
- const char *session_name)
+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 msg;
- struct lttcomm_relayd_generic_reply reply;
+ 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;
+ }
- /* Code flow error. Safety net. */
- assert(sock);
- assert(hostname);
- assert(session_name);
+ assert(session_name_len <= UINT32_MAX);
+ msg->session_name_len = htobe32(session_name_len);
+
+ assert(hostname_len <= UINT32_MAX);
+ msg->hostname_len = htobe32(hostname_len);
+
+ 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;
- DBG("Relayd creating session for hostname %s and session name %s",
- hostname, session_name);
+ 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));
+ }
- strncpy(msg.hostname, hostname, sizeof(msg.hostname));
- strncpy(msg.session_name, session_name, sizeof(msg.session_name));
+ msg->creation_time = htobe64((uint64_t) creation_time);
/* Send command */
- ret = send_command(sock, RELAYD_CREATE_SESSION, (void *) &msg,
- sizeof(msg), 0);
+ 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 = {};
+
+ assert(rsock);
+ 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);
+ }
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
if (ret < 0) {
goto error;
}
/* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
- ret = -reply.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 {
- /* Success */
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;
+ }
+
+ assert(channel_name_len <= UINT32_MAX);
+ msg->channel_name_len = htobe32(channel_name_len);
+
+ 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;
}
- DBG2("Relayd created session for %s", session_name);
+ 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;
}
-#endif
/*
* 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_sock *sock, const char *channel_name,
- const char *pathname, uint64_t *stream_id)
+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_add_stream msg;
struct lttcomm_relayd_status_stream reply;
+ char pathname[RELAYD_COMM_LTTNG_PATH_MAX];
+ char *separator;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
assert(channel_name);
- assert(pathname);
+ assert(domain_name);
+ assert(_pathname);
+ assert(trace_chunk);
DBG("Relayd adding stream for channel name %s", channel_name);
- strncpy(msg.channel_name, channel_name, sizeof(msg.channel_name));
- strncpy(msg.pathname, pathname, sizeof(msg.pathname));
+ 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("stream path too long.");
+ ret = -1;
+ goto error;
+ }
+
+ /* 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 {
+ enum lttng_trace_chunk_status chunk_status;
+ uint64_t chunk_id;
- /* Send command */
- ret = send_command(sock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
+ chunk_status = lttng_trace_chunk_get_id(trace_chunk,
+ &chunk_id);
+ 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;
}
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ /* Waiting for reply */
+ 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 != LTTCOMM_OK) {
- ret = -reply.ret_code;
- ERR("Relayd add stream replied error %d", ret);
+ 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 %zu", reply.handle);
+ DBG("Relayd stream added successfully with handle %" PRIu64,
+ reply.handle);
error:
return ret;
}
/*
- * Check version numbers on the relayd.
+ * Inform the relay that all the streams for the current channel has been sent.
*
- * Return 0 if compatible else negative value.
+ * On success return 0 else return ret_code negative value.
*/
-int relayd_version_check(struct lttcomm_sock *sock, uint32_t major,
- uint32_t minor)
+int relayd_streams_sent(struct lttcomm_relayd_sock *rsock)
{
int ret;
- struct lttcomm_relayd_version reply;
+ struct lttcomm_relayd_generic_reply reply;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
- DBG("Relayd version check for major.minor %u.%u", major, minor);
+ 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(sock, RELAYD_VERSION, NULL, 0, 0);
+ ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0);
if (ret < 0) {
goto error;
}
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ /* Waiting for reply */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
if (ret < 0) {
goto error;
}
- /* Set back to host bytes order */
- reply.major = be32toh(reply.major);
- reply.minor = be32toh(reply.minor);
-
- /* Validate version */
- if (reply.major <= major) {
- if (reply.minor <= minor) {
- /* Compatible */
- ret = 0;
- DBG2("Relayd version is compatible");
- 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;
}
- /* Version number not compatible */
- DBG2("Relayd version is NOT compatible %u.%u > %u.%u", reply.major,
- reply.minor, major, minor);
- ret = -1;
+ DBG("Relayd streams sent success");
error:
+end:
return ret;
}
-#if 0
/*
- * Start data command on the relayd.
+ * 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.
*
- * On success return 0 else return ret_code negative value.
+ * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL
+ * otherwise, or a negative value on network errors.
*/
-int relayd_start_data(struct lttcomm_sock *sock)
+int relayd_version_check(struct lttcomm_relayd_sock *rsock)
{
int ret;
- struct lttcomm_relayd_generic_reply reply;
+ struct lttcomm_relayd_version msg;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
+
+ DBG("Relayd version check for major.minor %u.%u", rsock->major,
+ rsock->minor);
- DBG("Relayd start data command");
+ 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(sock, RELAYD_START_DATA, NULL, 0, 0);
+ ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0);
if (ret < 0) {
goto error;
}
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &msg, sizeof(msg));
if (ret < 0) {
goto error;
}
- /* Return session id or negative ret code. */
- if (reply.ret_code != LTTCOMM_OK) {
- ret = -reply.ret_code;
- } else {
- /* Success */
- ret = 0;
+ /* 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;
}
-#endif
/*
* 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_sock *sock, size_t len)
+int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len)
{
int ret;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
- DBG("Relayd sending metadata of size %lu", len);
+ DBG("Relayd sending metadata of size %zu", len);
/* Send command */
- ret = send_command(sock, RELAYD_SEND_METADATA, NULL, len, 0);
+ ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0);
if (ret < 0) {
goto error;
}
/*
* 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.
+ * header. This is why we don't wait for a reply here.
*/
error:
}
/*
- * Connect to relay daemon with an allocated lttcomm_sock.
+ * Connect to relay daemon with an allocated lttcomm_relayd_sock.
*/
-int relayd_connect(struct lttcomm_sock *sock)
+int relayd_connect(struct lttcomm_relayd_sock *rsock)
{
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
+
+ if (!rsock->sock.ops) {
+ /*
+ * Attempting a connect on a non-initialized socket.
+ */
+ return -ECONNRESET;
+ }
DBG3("Relayd connect ...");
- return sock->ops->connect(sock);
+ return rsock->sock.ops->connect(&rsock->sock);
}
/*
- * Close relayd socket with an allocated lttcomm_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_sock *sock)
+int relayd_close(struct lttcomm_relayd_sock *rsock)
{
+ int ret;
+
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
+
+ /* An invalid fd is fine, return success. */
+ if (rsock->sock.fd < 0) {
+ ret = 0;
+ goto end;
+ }
- DBG3("Relayd closing socket %d", sock->fd);
+ 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;
- return sock->ops->close(sock);
+end:
+ return ret;
}
/*
* Send data header structure to the relayd.
*/
-int relayd_send_data_hdr(struct lttcomm_sock *sock,
+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. */
- assert(sock);
+ assert(rsock);
assert(hdr);
- DBG3("Relayd sending data header...");
+ if (rsock->sock.fd < 0) {
+ return -ECONNRESET;
+ }
+
+ DBG3("Relayd sending data header of size %zu", size);
/* Again, safety net */
if (size == 0) {
}
/* Only send data header. */
- ret = sock->ops->sendmsg(sock, hdr, size, 0);
+ ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0);
if (ret < 0) {
+ ret = -errno;
goto error;
}
/*
* Send close stream command to the relayd.
*/
-int relayd_send_close_stream(struct lttcomm_sock *sock, uint64_t stream_id,
+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_generic_reply reply;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
- DBG("Relayd closing stream id %zu", stream_id);
+ 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(sock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0);
+ ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0);
if (ret < 0) {
goto error;
}
- /* Recevie response */
- ret = recv_reply(sock, (void *) &reply, sizeof(reply));
+ /* 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 != LTTCOMM_OK) {
- ret = -reply.ret_code;
- ERR("Relayd close stream replied error %d", ret);
+ 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 %zu successfully", stream_id);
+ 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. */
+ 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. */
+ 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. */
+ 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. */
+ 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. */
+ 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. */
+ 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. */
+ 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