X-Git-Url: http://git.lttng.org/?p=lttngtop.git;a=blobdiff_plain;f=src%2Flttng-live-functions.c;fp=src%2Flttng-live-functions.c;h=0000000000000000000000000000000000000000;hp=42a7241ba82276b0779020a1a4b7eba8c741126b;hb=e3db29663b6e995aa707a060266691cce2507437;hpb=6c7065a7d4c9d1a0e4d64201c7aa0b18bf63b255

diff --git a/src/lttng-live-functions.c b/src/lttng-live-functions.c
deleted file mode 100644
index 42a7241..0000000
--- a/src/lttng-live-functions.c
+++ /dev/null
@@ -1,995 +0,0 @@
-/*
- * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#include <babeltrace/ctf/ctf-index.h>
-
-#include <babeltrace/babeltrace.h>
-#include <babeltrace/ctf/events.h>
-#include <babeltrace/ctf/callbacks.h>
-#include <babeltrace/ctf/iterator.h>
-
-/* for packet_index */
-#include <babeltrace/ctf/types.h>
-
-#include <babeltrace/ctf/metadata.h>
-#include <babeltrace/ctf-text/types.h>
-#include <babeltrace/ctf/events-internal.h>
-/*
-#include <formats/ctf/events-private.h>
-replaced with 
-*/
-#include "network-live.h"
-
-#include "lttng-live-functions.h"
-#include "lttng-viewer.h"
-#include "lttngtop.h"
-
-/*
- * Memory allocation zeroed
- */
-#define zmalloc(x) calloc(1, x)
-
-#ifndef max_t
-#define max_t(type, a, b)	\
-	((type) (a) > (type) (b) ? (type) (a) : (type) (b))
-#endif
-
-int lttng_live_connect_viewer(struct lttng_live_ctx *ctx, char *hostname,
-		int port)
-{
-	struct hostent *host;
-	struct sockaddr_in server_addr;
-	int ret;
-
-	host = gethostbyname(hostname);
-	if (!host) {
-		ret = -1;
-		goto end;
-	}
-
-	if ((ctx->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
-		perror("Socket");
-		ret = -1;
-		goto end;
-	}
-
-	server_addr.sin_family = AF_INET;
-	server_addr.sin_port = htons(port);
-	server_addr.sin_addr = *((struct in_addr *) host->h_addr);
-	bzero(&(server_addr.sin_zero), 8);
-
-	if (connect(ctx->control_sock, (struct sockaddr *) &server_addr,
-				sizeof(struct sockaddr)) == -1) {
-		perror("Connect");
-		ret = -1;
-		goto end;
-	}
-
-	ret = 0;
-
-end:
-	return ret;
-}
-
-int lttng_live_establish_connection(struct lttng_live_ctx *ctx)
-{
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_connect connect;
-	int ret;
-	ssize_t ret_len;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT);
-	cmd.data_size = sizeof(connect);
-	cmd.cmd_version = 0;
-
-	connect.viewer_session_id = -1ULL;	/* will be set on recv */
-	connect.major = htobe32(LTTNG_LIVE_MAJOR);
-	connect.minor = htobe32(LTTNG_LIVE_MINOR);
-	connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND);
-
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = send(ctx->control_sock, &connect, sizeof(connect), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending version\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(connect));
-
-	do {
-		ret_len = recv(ctx->control_sock, &connect, sizeof(connect), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving version\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(connect));
-
-	printf_verbose("Received viewer session ID : %" PRIu64 "\n",
-			be64toh(connect.viewer_session_id));
-	printf_verbose("Relayd version : %u.%u\n", be32toh(connect.major),
-			be32toh(connect.minor));
-
-	ret = 0;
-
-error:
-	return ret;
-}
-
-int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path)
-{
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_list_sessions list;
-	struct lttng_viewer_session lsession;
-	int i, ret;
-	ssize_t ret_len;
-	int sessions_count;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS);
-	cmd.data_size = 0;
-	cmd.cmd_version = 0;
-
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = recv(ctx->control_sock, &list, sizeof(list), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving session list\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(list));
-
-	sessions_count = be32toh(list.sessions_count);
-	fprintf(stdout, "%u active session(s)%c\n", sessions_count,
-			sessions_count > 0 ? ':' : ' ');
-	for (i = 0; i < sessions_count; i++) {
-		do {
-			ret_len = recv(ctx->control_sock, &lsession, sizeof(lsession), 0);
-		} while (ret_len < 0 && errno == EINTR);
-		if (ret_len < 0) {
-			fprintf(stderr, "[error] Error receiving session\n");
-			ret = ret_len;
-			goto error;
-		}
-		assert(ret_len == sizeof(lsession));
-		lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0';
-		lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0';
-
-		fprintf(stdout, "%s/%" PRIu64 " : %s on host %s (timer = %u, "
-				"%u stream(s), %u client(s) connected)\n",
-				path, be64toh(lsession.id),
-				lsession.session_name, lsession.hostname,
-				be32toh(lsession.live_timer),
-				be32toh(lsession.streams),
-				be32toh(lsession.clients));
-	}
-
-	ret = 0;
-
-error:
-	return ret;
-}
-
-int lttng_live_ctf_trace_assign(struct lttng_live_viewer_stream *stream,
-		uint64_t ctf_trace_id)
-{
-	struct lttng_live_ctf_trace *trace;
-	int ret = 0;
-
-	trace = g_hash_table_lookup(stream->session->ctf_traces,
-			(gpointer) ctf_trace_id);
-	if (!trace) {
-		trace = g_new0(struct lttng_live_ctf_trace, 1);
-		trace->ctf_trace_id = ctf_trace_id;
-		trace->streams = g_ptr_array_new();
-		g_hash_table_insert(stream->session->ctf_traces,
-				(gpointer) ctf_trace_id,
-				trace);
-	}
-	if (stream->metadata_flag)
-		trace->metadata_stream = stream;
-
-	stream->ctf_trace = trace;
-	g_ptr_array_add(trace->streams, stream);
-
-	return ret;
-}
-
-int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id)
-{
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_attach_session_request rq;
-	struct lttng_viewer_attach_session_response rp;
-	struct lttng_viewer_stream stream;
-	int ret, i;
-	ssize_t ret_len;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION);
-	cmd.data_size = sizeof(rq);
-	cmd.cmd_version = 0;
-
-	memset(&rq, 0, sizeof(rq));
-	rq.session_id = htobe64(id);
-	// TODO: add cmd line parameter to select seek beginning
-	// rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING);
-	rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST);
-
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = send(ctx->control_sock, &rq, sizeof(rq), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending attach request\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rq));
-
-	do {
-		ret_len = recv(ctx->control_sock, &rp, sizeof(rp), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving attach response\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rp));
-
-	switch(be32toh(rp.status)) {
-	case LTTNG_VIEWER_ATTACH_OK:
-		break;
-	case LTTNG_VIEWER_ATTACH_UNK:
-		ret = -LTTNG_VIEWER_ATTACH_UNK;
-		goto end;
-	case LTTNG_VIEWER_ATTACH_ALREADY:
-		fprintf(stderr, "[error] Already a viewer attached\n");
-		ret = -1;
-		goto end;
-	case LTTNG_VIEWER_ATTACH_NOT_LIVE:
-		fprintf(stderr, "[error] Not a live session\n");
-		ret = -1;
-		goto end;
-	case LTTNG_VIEWER_ATTACH_SEEK_ERR:
-		fprintf(stderr, "[error] Wrong seek parameter\n");
-		ret = -1;
-		goto end;
-	default:
-		fprintf(stderr, "[error] Unknown attach return code %u\n",
-				be32toh(rp.status));
-		ret = -1;
-		goto end;
-	}
-	if (be32toh(rp.status) != LTTNG_VIEWER_ATTACH_OK) {
-		ret = -1;
-		goto end;
-	}
-
-	ctx->session->stream_count = be32toh(rp.streams_count);
-	/*
-	 * When the session is created but not started, we do an active wait
-	 * until it starts. It allows the viewer to start processing the trace
-	 * as soon as the session starts.
-	 */
-	if (ctx->session->stream_count == 0) {
-		ret = 0;
-		goto end;
-	}
-	printf_verbose("Waiting for %" PRIu64 " streams:\n",
-		ctx->session->stream_count);
-	ctx->session->streams = g_new0(struct lttng_live_viewer_stream,
-			ctx->session->stream_count);
-	for (i = 0; i < be32toh(rp.streams_count); i++) {
-		do {
-			ret_len = recv(ctx->control_sock, &stream, sizeof(stream), 0);
-		} while (ret_len < 0 && errno == EINTR);
-		if (ret_len < 0) {
-			fprintf(stderr, "[error] Error receiving stream\n");
-			ret = ret_len;
-			goto error;
-		}
-		assert(ret_len == sizeof(stream));
-		stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0';
-		stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0';
-
-		printf_verbose("    stream %" PRIu64 " : %s/%s\n",
-				be64toh(stream.id), stream.path_name,
-				stream.channel_name);
-		ctx->session->streams[i].id = be64toh(stream.id);
-		ctx->session->streams[i].session = ctx->session;
-
-		ctx->session->streams[i].first_read = 1;
-		ctx->session->streams[i].mmap_size = 0;
-
-		if (be32toh(stream.metadata_flag)) {
-			char *path;
-
-			path = strdup(LTTNG_METADATA_PATH_TEMPLATE);
-			if (!path) {
-				perror("strdup");
-				ret = -1;
-				goto error;
-			}
-			if (!mkdtemp(path)) {
-				perror("mkdtemp");
-				free(path);
-				ret = -1;
-				goto error;
-			}
-			ctx->session->streams[i].metadata_flag = 1;
-			snprintf(ctx->session->streams[i].path,
-					sizeof(ctx->session->streams[i].path),
-					"%s/%s", path,
-					stream.channel_name);
-			ret = open(ctx->session->streams[i].path,
-					O_WRONLY | O_CREAT | O_TRUNC,
-					S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
-			if (ret < 0) {
-				perror("open");
-				free(path);
-				goto error;
-			}
-			ctx->session->streams[i].fd = ret;
-			free(path);
-		}
-		ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i],
-				be64toh(stream.ctf_trace_id));
-		if (ret < 0) {
-			goto error;
-		}
-
-	}
-	ret = 0;
-
-end:
-error:
-	return ret;
-}
-
-static
-int get_data_packet(struct lttng_live_ctx *ctx,
-		struct ctf_stream_pos *pos,
-		struct lttng_live_viewer_stream *stream, uint64_t offset,
-		uint64_t len)
-{
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_get_packet rq;
-	struct lttng_viewer_trace_packet rp;
-	ssize_t ret_len;
-	int ret;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET);
-	cmd.data_size = sizeof(rq);
-	cmd.cmd_version = 0;
-
-	memset(&rq, 0, sizeof(rq));
-	rq.stream_id = htobe64(stream->id);
-	/* Already in big endian. */
-	rq.offset = offset;
-	rq.len = htobe32(len);
-
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = send(ctx->control_sock, &rq, sizeof(rq), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending get_data_packet request\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rq));
-
-	do {
-		ret_len = recv(ctx->control_sock, &rp, sizeof(rp), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving data response\n");
-		ret = ret_len;
-		goto error;
-	}
-	if (ret_len != sizeof(rp)) {
-		fprintf(stderr, "[error] get_data_packet: expected %" PRId64
-				", received %" PRId64 "\n", ret_len,
-				sizeof(rp));
-		ret = -1;
-		goto error;
-	}
-
-	rp.flags = be32toh(rp.flags);
-
-	switch (be32toh(rp.status)) {
-	case LTTNG_VIEWER_GET_PACKET_OK:
-		len = be32toh(rp.len);
-		printf_verbose("get_data_packet: Ok, packet size : %" PRIu64
-				"\n", len);
-		break;
-	case LTTNG_VIEWER_GET_PACKET_RETRY:
-		printf_verbose("get_data_packet: retry\n");
-		ret = -1;
-		goto end;
-	case LTTNG_VIEWER_GET_PACKET_ERR:
-		if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) {
-			printf_verbose("get_data_packet: new metadata needed\n");
-			ret = 0;
-			goto end;
-		}
-		fprintf(stderr, "[error] get_data_packet: error\n");
-		ret = -1;
-		goto end;
-	case LTTNG_VIEWER_GET_PACKET_EOF:
-		ret = -2;
-		goto error;
-	default:
-		printf_verbose("get_data_packet: unknown\n");
-		assert(0);
-		ret = -1;
-		goto end;
-	}
-
-	if (len <= 0) {
-		ret = -1;
-		goto end;
-	}
-
-	if (len > stream->mmap_size) {
-		uint64_t new_size;
-
-		new_size = max_t(uint64_t, len, stream->mmap_size << 1);
-		if (pos->base_mma) {
-			/* unmap old base */
-			ret = munmap_align(pos->base_mma);
-			if (ret) {
-				fprintf(stderr, "[error] Unable to unmap old base: %s.\n",
-					strerror(errno));
-				ret = -1;
-				goto error;
-			}
-			pos->base_mma = NULL;
-		}
-		pos->base_mma = mmap_align(new_size,
-				PROT_READ | PROT_WRITE,
-				MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-		if (pos->base_mma == MAP_FAILED) {
-			fprintf(stderr, "[error] mmap error %s.\n",
-				strerror(errno));
-			pos->base_mma = NULL;
-			ret = -1;
-			goto error;
-		}
-
-		stream->mmap_size = new_size;
-		printf_verbose("Expanding stream mmap size to %" PRIu64 " bytes\n",
-				stream->mmap_size);
-	}
-
-	do {
-		ret_len = recv(ctx->control_sock,
-			mmap_align_addr(pos->base_mma), len,
-			MSG_WAITALL);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving trace packet\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == len);
-
-end:
-error:
-	return ret;
-}
-
-/*
- * Return number of metadata bytes written or a negative value on error.
- */
-static
-int get_new_metadata(struct lttng_live_ctx *ctx,
-		struct lttng_live_viewer_stream *viewer_stream,
-		uint64_t *metadata_len)
-{
-	uint64_t len = 0;
-	int ret;
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_get_metadata rq;
-	struct lttng_viewer_metadata_packet rp;
-	struct lttng_live_viewer_stream *metadata_stream;
-	char *data = NULL;
-	ssize_t ret_len;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA);
-	cmd.data_size = sizeof(rq);
-	cmd.cmd_version = 0;
-
-	metadata_stream = viewer_stream->ctf_trace->metadata_stream;
-	rq.stream_id = htobe64(metadata_stream->id);
-
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = send(ctx->control_sock, &rq, sizeof(rq), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending get_metadata request\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rq));
-
-	do {
-		ret_len = recv(ctx->control_sock, &rp, sizeof(rp), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving metadata response\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rp));
-
-	switch (be32toh(rp.status)) {
-		case LTTNG_VIEWER_METADATA_OK:
-			printf_verbose("get_metadata : OK\n");
-			break;
-		case LTTNG_VIEWER_NO_NEW_METADATA:
-			printf_verbose("get_metadata : NO NEW\n");
-			ret = -1;
-			goto end;
-		case LTTNG_VIEWER_METADATA_ERR:
-			printf_verbose("get_metadata : ERR\n");
-			ret = -1;
-			goto end;
-		default:
-			printf_verbose("get_metadata : UNKNOWN\n");
-			ret = -1;
-			goto end;
-	}
-
-	len = be64toh(rp.len);
-	printf_verbose("Writing %" PRIu64" bytes to metadata\n", len);
-	if (len <= 0) {
-		ret = -1;
-		goto end;
-	}
-
-	data = zmalloc(len);
-	if (!data) {
-		perror("relay data zmalloc");
-		ret = -1;
-		goto error;
-	}
-	do {
-		ret_len = recv(ctx->control_sock, data, len, MSG_WAITALL);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving trace packet\n");
-		ret = ret_len;
-		free(data);
-		goto error;
-	}
-	assert(ret_len == len);
-
-	do {
-		ret_len = write(metadata_stream->fd, data, len);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		free(data);
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == len);
-
-	free(data);
-
-	*metadata_len = len;
-	ret = 0;
-end:
-error:
-	return ret;
-}
-
-/*
- * Get one index for a stream.
- *
- * Returns 0 on success or a negative value on error.
- */
-static
-int get_next_index(struct lttng_live_ctx *ctx,
-		struct lttng_live_viewer_stream *viewer_stream,
-		struct packet_index *index)
-{
-	struct lttng_viewer_cmd cmd;
-	struct lttng_viewer_get_next_index rq;
-	struct lttng_viewer_index rp;
-	int ret;
-	uint64_t metadata_len;
-	ssize_t ret_len;
-
-	cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX);
-	cmd.data_size = sizeof(rq);
-	cmd.cmd_version = 0;
-
-	memset(&rq, 0, sizeof(rq));
-	rq.stream_id = htobe64(viewer_stream->id);
-
-retry:
-	do {
-		ret_len = send(ctx->control_sock, &cmd, sizeof(cmd), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending cmd\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(cmd));
-
-	do {
-		ret_len = send(ctx->control_sock, &rq, sizeof(rq), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error sending get_next_index request\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rq));
-
-	do {
-		ret_len = recv(ctx->control_sock, &rp, sizeof(rp), 0);
-	} while (ret_len < 0 && errno == EINTR);
-	if (ret_len < 0) {
-		fprintf(stderr, "[error] Error receiving index response\n");
-		ret = ret_len;
-		goto error;
-	}
-	assert(ret_len == sizeof(rp));
-
-	rp.flags = be32toh(rp.flags);
-
-	switch (be32toh(rp.status)) {
-	case LTTNG_VIEWER_INDEX_INACTIVE:
-		printf_verbose("get_next_index: inactive\n");
-		memset(index, 0, sizeof(struct packet_index));
-		index->timestamp_end = be64toh(rp.timestamp_end);
-		break;
-	case LTTNG_VIEWER_INDEX_OK:
-		printf_verbose("get_next_index: Ok, need metadata update : %u\n",
-				rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA);
-		index->offset = be64toh(rp.offset);
-		index->packet_size = be64toh(rp.packet_size);
-		index->content_size = be64toh(rp.content_size);
-		index->timestamp_begin = be64toh(rp.timestamp_begin);
-		index->timestamp_end = be64toh(rp.timestamp_end);
-		index->events_discarded = be64toh(rp.events_discarded);
-
-		if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) {
-			printf_verbose("get_next_index: new metadata needed\n");
-			ret = get_new_metadata(ctx, viewer_stream,
-					&metadata_len);
-			if (ret < 0) {
-				goto error;
-			}
-		}
-		break;
-	case LTTNG_VIEWER_INDEX_RETRY:
-		printf_verbose("get_next_index: retry\n");
-		sleep(1);
-		goto retry;
-	case LTTNG_VIEWER_INDEX_HUP:
-		printf_verbose("get_next_index: stream hung up\n");
-		viewer_stream->id = -1ULL;
-		viewer_stream->fd = -1;
-		index->offset = EOF;
-		break;
-	case LTTNG_VIEWER_INDEX_ERR:
-		fprintf(stderr, "[error] get_next_index: error\n");
-		ret = -1;
-		goto error;
-	default:
-		fprintf(stderr, "[error] get_next_index: unkwown value\n");
-		ret = -1;
-		goto error;
-	}
-
-	ret = 0;
-
-error:
-	return ret;
-}
-
-void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index,
-		int whence)
-{
-	struct ctf_stream_pos *pos;
-	struct ctf_file_stream *file_stream;
-	struct packet_index packet_index;
-	struct lttng_live_viewer_stream *viewer_stream;
-	struct lttng_live_session *session;
-	int ret;
-
-retry:
-	pos = ctf_pos(stream_pos);
-	file_stream = container_of(pos, struct ctf_file_stream, pos);
-	viewer_stream = (struct lttng_live_viewer_stream *) pos->priv;
-	session = viewer_stream->session;
-
-	printf_verbose("get_next_index for stream %" PRIu64 "\n", viewer_stream->id);
-	ret = get_next_index(session->ctx, viewer_stream, &packet_index);
-	if (ret < 0) {
-		pos->offset = EOF;
-		fprintf(stderr, "[error] get_next_index failed\n");
-		return;
-	}
-
-	pos->packet_size = packet_index.packet_size;
-	pos->content_size = packet_index.content_size;
-	pos->mmap_base_offset = 0;
-	if (packet_index.offset == EOF) {
-		pos->offset = EOF;
-	} else {
-		pos->offset = 0;
-	}
-
-	if (packet_index.content_size == 0) {
-		file_stream->parent.cycles_timestamp = packet_index.timestamp_end;
-		file_stream->parent.real_timestamp = ctf_get_real_timestamp(
-				&file_stream->parent, packet_index.timestamp_end);
-	} else {
-		file_stream->parent.cycles_timestamp = packet_index.timestamp_begin;
-		file_stream->parent.real_timestamp = ctf_get_real_timestamp(
-				&file_stream->parent, packet_index.timestamp_begin);
-	}
-
-	if (pos->packet_size == 0 || pos->offset == EOF) {
-		goto end;
-	}
-
-	printf_verbose("get_data_packet for stream %" PRIu64 "\n",
-			viewer_stream->id);
-	ret = get_data_packet(session->ctx, pos, viewer_stream,
-			be64toh(packet_index.offset),
-			packet_index.packet_size / CHAR_BIT);
-	if (ret == -2) {
-		goto retry;
-	} else if (ret < 0) {
-		pos->offset = EOF;
-		fprintf(stderr, "[error] get_data_packet failed\n");
-		return;
-	}
-
-	printf_verbose("Index received : packet_size : %" PRIu64
-			", offset %" PRIu64 ", content_size %" PRIu64
-			", timestamp_end : %" PRIu64 "\n",
-			packet_index.packet_size, packet_index.offset,
-			packet_index.content_size, packet_index.timestamp_end);
-
-	/* update trace_packet_header and stream_packet_context */
-	if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) {
-		/* Read packet header */
-		ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p);
-		if (ret) {
-			pos->offset = EOF;
-			fprintf(stderr, "[error] trace packet header read failed\n");
-			goto end;
-		}
-	}
-	if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) {
-		/* Read packet context */
-		ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p);
-		if (ret) {
-			pos->offset = EOF;
-			fprintf(stderr, "[error] stream packet context read failed\n");
-			goto end;
-		}
-	}
-	pos->data_offset = pos->offset;
-
-end:
-	return;
-}
-
-static int del_traces(gpointer key, gpointer value, gpointer user_data)
-{
-	struct bt_context *bt_ctx = user_data;
-	struct lttng_live_ctf_trace *trace = value;
-	int ret;
-
-	ret = bt_context_remove_trace(bt_ctx, trace->trace_id);
-	if (ret < 0)
-		fprintf(stderr, "[error] removing trace from context\n");
-
-	/* remove the key/value pair from the HT. */
-	return 1;
-}
-
-static void add_traces(gpointer key, gpointer value, gpointer user_data)
-{
-	int i, ret, total_metadata = 0;
-	uint64_t metadata_len;
-	struct bt_context *bt_ctx = user_data;
-	struct lttng_live_ctf_trace *trace = value;
-	struct lttng_live_viewer_stream *stream;
-	struct bt_mmap_stream *new_mmap_stream;
-	struct bt_mmap_stream_list mmap_list;
-	struct lttng_live_ctx *ctx = NULL;
-
-	BT_INIT_LIST_HEAD(&mmap_list.head);
-
-	for (i = 0; i < trace->streams->len; i++) {
-		stream = g_ptr_array_index(trace->streams, i);
-		ctx = stream->session->ctx;
-
-		if (!stream->metadata_flag) {
-			new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream));
-			new_mmap_stream->priv = (void *) stream;
-			new_mmap_stream->fd = -1;
-			bt_list_add(&new_mmap_stream->list, &mmap_list.head);
-		} else {
-			/* Get all possible metadata before starting */
-			do {
-				ret = get_new_metadata(ctx, stream,
-						&metadata_len);
-				if (ret == 0) {
-					total_metadata += metadata_len;
-				}
-			} while (ret == 0 || total_metadata == 0);
-			trace->metadata_fp = fopen(stream->path, "r");
-		}
-	}
-
-	if (!trace->metadata_fp) {
-		fprintf(stderr, "[error] No metadata stream opened\n");
-		goto end_free;
-	}
-
-	ret = bt_context_add_trace(bt_ctx, NULL, "ctf",
-			ctf_live_packet_seek, &mmap_list, trace->metadata_fp);
-	if (ret < 0) {
-		fprintf(stderr, "[error] Error adding trace\n");
-		goto end_free;
-	}
-	trace->trace_id = ret;
-
-	goto end;
-
-end_free:
-	bt_context_put(bt_ctx);
-end:
-	return;
-}
-
-void lttng_live_read(struct lttng_live_ctx *ctx, uint64_t session_id)
-{
-	int ret, active_session = 0;
-	struct bt_context *bt_ctx;
-
-	bt_ctx = bt_context_create();
-	if (!bt_ctx) {
-		fprintf(stderr, "[error] bt_context_create allocation\n");
-		goto end;
-	}
-
-	/*
-	 * As long as the session is active, we try to reattach to it,
-	 * even if all the streams get closed.
-	 */
-//	do {
-		do {
-			ret = lttng_live_attach_session(ctx, session_id);
-			printf_verbose("Attaching session returns %d\n", ret);
-			if (ret < 0) {
-				if (ret == -LTTNG_VIEWER_ATTACH_UNK) {
-					if (active_session)
-						goto end_free;
-					fprintf(stderr, "[error] Unknown "
-							"session ID\n");
-				}
-				goto end_free;
-			} else {
-				active_session = 1;
-			}
-		} while (ctx->session->stream_count == 0);
-
-		g_hash_table_foreach(ctx->session->ctf_traces, add_traces, bt_ctx);
-
-		ret = check_requirements(bt_ctx);
-		if (ret < 0) {
-			fprintf(stderr, "[error] some mandatory contexts "
-					"were missing, exiting.\n");
-			goto end;
-		}
-
-		if (!opt_textdump) {
-			pthread_create(&display_thread, NULL, ncurses_display,
-					(void *) NULL);
-			pthread_create(&timer_thread, NULL, refresh_thread,
-					(void *) NULL);
-		}
-
-		iter_trace(bt_ctx);
-
-		g_hash_table_foreach_remove(ctx->session->ctf_traces, del_traces, bt_ctx);
-//	} while (active_session);
-
-end_free:
-	bt_context_put(bt_ctx);
-end:
-	return;
-}