* 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 <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 "relayd.h"
/*
* 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;
+
+ 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)
+ * 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,
+ char *session_name, char *hostname,
+ int session_live_timer, unsigned int snapshot)
+{
+ int ret;
+ struct lttcomm_relayd_create_session_2_11 *msg = NULL;
+ size_t session_name_len;
+ size_t hostname_len;
+ size_t msg_length;
+
+ /* The two names are sent with a '\0' delimiter between them. */
+ session_name_len = strlen(session_name) + 1;
+ hostname_len = strlen(hostname) + 1;
+
+ msg_length = sizeof(*msg) + session_name_len + hostname_len;
+ msg = zmalloc(msg_length);
+ if (!msg) {
+ PERROR("zmalloc create_session_2_11 command message");
+ ret = -1;
+ goto error;
+ }
+
+ 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);
+
+ if (lttng_strncpy(msg->names, session_name, session_name_len)) {
+ ret = -1;
+ goto error;
+ }
+ if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) {
+ ret = -1;
+ goto error;
+ }
+
+ msg->live_timer = htobe32(session_live_timer);
+ msg->snapshot = !!snapshot;
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0);
+ 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,
+ char *session_name, char *hostname, int session_live_timer,
+ unsigned int snapshot)
+{
+ 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;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * RELAYD_CREATE_SESSION from 2.1 to 2.3.
+ */
+static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock)
+{
+ int ret;
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+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 *session_id,
+ char *session_name, char *hostname, int session_live_timer,
+ unsigned int snapshot)
+{
+ int ret;
+ struct lttcomm_relayd_status_session reply;
+
+ assert(rsock);
+ assert(session_id);
+
+ DBG("Relayd create session");
+
+ if (rsock->minor < 4) {
+ /* From 2.1 to 2.3 */
+ ret = relayd_create_session_2_1(rsock);
+ } 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);
+ } else {
+ /* From 2.11 to ... */
+ ret = relayd_create_session_2_11(rsock, session_name,
+ hostname, session_live_timer, snapshot);
+ }
+
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.session_id = be64toh(reply.session_id);
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd create session replied error %d", reply.ret_code);
+ goto error;
+ } else {
+ ret = 0;
+ *session_id = reply.session_id;
+ }
+
+ DBG("Relayd session created with id %" PRIu64, reply.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;
- DBG3("Relayd waiting for reply...");
+ 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);
- ret = sock->ops->recvmsg(sock, data, size, 0);
+ /* 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)
+{
+ 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;
+ }
+
+ msg->tracefile_size = htobe64(tracefile_size);
+ msg->tracefile_count = htobe64(tracefile_count);
+ /* 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;
}
*
* 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 *pathname, uint64_t *stream_id,
+ uint64_t tracefile_size, uint64_t tracefile_count,
+ uint64_t trace_archive_id)
{
int ret;
- struct lttcomm_relayd_add_stream msg;
struct lttcomm_relayd_status_stream reply;
/* Code flow error. Safety net. */
- assert(sock);
+ assert(rsock);
assert(channel_name);
assert(pathname);
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));
+ /* 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 {
+ /* From 2.11 to ...*/
+ ret = relayd_add_stream_2_11(rsock, channel_name, pathname,
+ tracefile_size, tracefile_count);
+ }
- /* Send command */
- ret = send_command(sock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0);
- if (ret < 0) {
+ 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;
}
/* Return session id or negative ret code. */
if (reply.ret_code != LTTNG_OK) {
- ret = -reply.ret_code;
- ERR("Relayd add stream replied error %d", ret);
+ ret = -1;
+ ERR("Relayd add stream replied error %d", reply.ret_code);
} else {
/* Success */
ret = 0;
}
DBG("Relayd stream added successfully with handle %" PRIu64,
- reply.handle);
+ 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. */
+ 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 compatible else 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_version_check(struct lttcomm_sock *sock, uint32_t major,
- uint32_t minor)
+int relayd_version_check(struct lttcomm_relayd_sock *rsock)
{
int ret;
- struct lttcomm_relayd_version 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 version check for major.minor %u.%u", major, 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(sock, RELAYD_VERSION, 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;
}
/* 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;
- }
+ 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 not compatible */
- DBG2("Relayd version is NOT compatible %u.%u > %u.%u", reply.major,
- reply.minor, major, minor);
- ret = -1;
+ /* Version number compatible */
+ DBG2("Relayd version is compatible, using protocol version %u.%u",
+ rsock->major, rsock->minor);
+ ret = 0;
error:
return ret;
*
* 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 %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 %" 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;
}
/* Return session id or negative ret code. */
if (reply.ret_code != LTTNG_OK) {
- ret = -reply.ret_code;
- ERR("Relayd close stream replied error %d", ret);
+ ret = -1;
+ ERR("Relayd close stream replied error %d", reply.ret_code);
} else {
/* Success */
ret = 0;
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_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id,
+ const char *new_pathname, uint64_t new_chunk_id,
+ uint64_t seq_num)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_stream *msg = NULL;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t len;
+ int msg_len;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id);
+
+ /* Account for the trailing NULL. */
+ len = lttng_strnlen(new_pathname, LTTNG_PATH_MAX) + 1;
+ if (len > LTTNG_PATH_MAX) {
+ ERR("Path used in relayd rotate stream command exceeds the maximal allowed length");
+ ret = -1;
+ goto error;
+ }
+
+ msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len;
+ msg = zmalloc(msg_len);
+ if (!msg) {
+ PERROR("Failed to allocate relayd rotate stream command of %d bytes",
+ msg_len);
+ ret = -1;
+ goto error;
+ }
+
+ if (lttng_strncpy(msg->new_pathname, new_pathname, len)) {
+ ret = -1;
+ ERR("Failed to copy relayd rotate stream command's new path name");
+ goto error;
+ }
+
+ msg->pathname_length = htobe32(len);
+ msg->stream_id = htobe64(stream_id);
+ msg->new_chunk_id = htobe64(new_chunk_id);
+ /*
+ * The seq_num is invalid for metadata streams, but it is ignored on
+ * the relay.
+ */
+ msg->rotate_at_seq_num = htobe64(seq_num);
+
+ /* Send command. */
+ ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0);
+ if (ret < 0) {
+ ERR("Send rotate command");
+ goto error;
+ }
+
+ /* Receive response. */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ ERR("Receive rotate reply");
+ 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 rotate stream replied error %d", reply.ret_code);
+ } else {
+ /* Success. */
+ ret = 0;
+ DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id);
+ }
+
+error:
+ free(msg);
+ return ret;
+}
+
+int relayd_rotate_rename(struct lttcomm_relayd_sock *rsock,
+ const char *old_path, const char *new_path)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_rename *msg = NULL;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t old_path_length, new_path_length;
+ size_t msg_length;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Relayd rename chunk %s to %s", old_path, new_path);
+
+ /* The two paths are sent with a '\0' delimiter between them. */
+ old_path_length = strlen(old_path) + 1;
+ new_path_length = strlen(new_path) + 1;
+
+ msg_length = sizeof(*msg) + old_path_length + new_path_length;
+ msg = zmalloc(msg_length);
+ if (!msg) {
+ PERROR("zmalloc rotate-rename command message");
+ ret = -1;
+ goto error;
+ }
+
+ assert(old_path_length <= UINT32_MAX);
+ msg->old_path_length = htobe32(old_path_length);
+
+ assert(new_path_length <= UINT32_MAX);
+ msg->new_path_length = htobe32(new_path_length);
+
+ strcpy(msg->paths, old_path);
+ strcpy(msg->paths + old_path_length, new_path);
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_ROTATE_RENAME, (const void *) msg,
+ msg_length, 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 rotate rename replied error %d", reply.ret_code);
+ } else {
+ /* Success */
+ ret = 0;
+ }
+
+ DBG("Relayd rotate rename completed successfully");
+
+error:
+ free(msg);
+ return ret;
+}
+
+int relayd_rotate_pending(struct lttcomm_relayd_sock *rsock, uint64_t chunk_id)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_pending msg;
+ struct lttcomm_relayd_rotate_pending_reply reply;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Querying relayd for rotate pending with chunk_id %" PRIu64,
+ chunk_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.chunk_id = htobe64(chunk_id);
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_ROTATE_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.generic.ret_code = be32toh(reply.generic.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.generic.ret_code != LTTNG_OK) {
+ ret = -reply.generic.ret_code;
+ ERR("Relayd rotate pending replied with error %d", ret);
+ goto error;
+ } else {
+ /* No error, just rotate pending state */
+ if (reply.is_pending == 0 || reply.is_pending == 1) {
+ ret = reply.is_pending;
+ DBG("Relayd rotate pending command completed successfully with result \"%s\"",
+ ret ? "rotation pending" : "rotation NOT pending");
+ } else {
+ ret = -LTTNG_ERR_UNK;
+ }
+ }
+
+error:
+ return ret;
+}
+
+int relayd_mkdir(struct lttcomm_relayd_sock *rsock, const char *path)
+{
+ int ret;
+ struct lttcomm_relayd_mkdir *msg;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t len;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Relayd mkdir path %s", path);
+
+ len = strlen(path) + 1;
+ msg = zmalloc(sizeof(msg->length) + len);
+ if (!msg) {
+ PERROR("Alloc mkdir msg");
+ ret = -1;
+ goto error;
+ }
+ msg->length = htobe32((uint32_t) len);
+
+ if (lttng_strncpy(msg->path, path, len)) {
+ ret = -1;
+ goto error;
+ }
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_MKDIR, (void *) msg,
+ sizeof(msg->length) + len, 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 mkdir replied error %d", reply.ret_code);
+ } else {
+ /* Success */
+ ret = 0;
+ }
+
+ DBG("Relayd mkdir completed successfully");
+
+error:
+ free(msg);
+ return ret;
+}
projects / lttng-tools.git / blobdiff