*/
#define _LGPL_SOURCE
+#include <fcntl.h>
#include <getopt.h>
#include <grp.h>
+#include <inttypes.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
-#include <inttypes.h>
+#include <unistd.h>
#include <urcu/futex.h>
-#include <urcu/uatomic.h>
#include <urcu/rculist.h>
-#include <unistd.h>
-#include <fcntl.h>
+#include <urcu/uatomic.h>
-#include <lttng/lttng.h>
#include <common/common.h>
+#include <common/compat/endian.h>
#include <common/compat/poll.h>
#include <common/compat/socket.h>
-#include <common/compat/endian.h>
#include <common/defaults.h>
+#include <common/fd-tracker/utils.h>
+#include <common/fs-handle.h>
#include <common/futex.h>
#include <common/index/index.h>
-#include <common/sessiond-comm/sessiond-comm.h>
#include <common/sessiond-comm/inet.h>
#include <common/sessiond-comm/relayd.h>
+#include <common/sessiond-comm/sessiond-comm.h>
#include <common/uri.h>
#include <common/utils.h>
-#include <common/fd-tracker/utils.h>
+#include <lttng/lttng.h>
#include "cmd.h"
+#include "connection.h"
+#include "ctf-trace.h"
+#include "health-relayd.h"
#include "live.h"
#include "lttng-relayd.h"
-#include "utils.h"
-#include "health-relayd.h"
-#include "testpoint.h"
-#include "viewer-stream.h"
-#include "stream.h"
#include "session.h"
-#include "ctf-trace.h"
-#include "connection.h"
+#include "stream.h"
+#include "testpoint.h"
+#include "utils.h"
#include "viewer-session.h"
+#include "viewer-stream.h"
#define SESSION_BUF_DEFAULT_COUNT 16
return ret;
}
-/*
- * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set.
- */
-static
-int create_thread_poll_set(struct lttng_poll_event *events, int size)
-{
- return create_named_thread_poll_set(events, size, "Unknown epoll");
-}
-
/*
* Check if the thread quit pipe was triggered.
*
return 0;
}
+static
+int create_sock(void *data, int *out_fd)
+{
+ int ret;
+ struct lttcomm_sock *sock = data;
+
+ ret = lttcomm_create_sock(sock);
+ if (ret < 0) {
+ goto end;
+ }
+
+ *out_fd = sock->fd;
+end:
+ return ret;
+}
+
+static
+int close_sock(void *data, int *in_fd)
+{
+ struct lttcomm_sock *sock = data;
+
+ return sock->ops->close(sock);
+}
+
+static int accept_sock(void *data, int *out_fd)
+{
+ int ret = 0;
+ /* Socks is an array of in_sock, out_sock. */
+ struct lttcomm_sock **socks = data;
+ struct lttcomm_sock *in_sock = socks[0];
+
+ socks[1] = in_sock->ops->accept(in_sock);
+ if (!socks[1]) {
+ ret = -1;
+ goto end;
+ }
+ *out_fd = socks[1]->fd;
+end:
+ return ret;
+}
+
+static
+struct lttcomm_sock *accept_live_sock(struct lttcomm_sock *listening_sock,
+ const char *name)
+{
+ int out_fd, ret;
+ struct lttcomm_sock *socks[2] = { listening_sock, NULL };
+ struct lttcomm_sock *new_sock = NULL;
+
+ ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &out_fd,
+ (const char **) &name, 1, accept_sock, &socks);
+ if (ret) {
+ goto end;
+ }
+ new_sock = socks[1];
+ DBG("%s accepted, socket %d", name, new_sock->fd);
+end:
+ return new_sock;
+}
+
/*
* Create and init socket from uri.
*/
static
-struct lttcomm_sock *init_socket(struct lttng_uri *uri)
+struct lttcomm_sock *init_socket(struct lttng_uri *uri, const char *name)
{
- int ret;
+ int ret, sock_fd;
struct lttcomm_sock *sock = NULL;
+ char uri_str[LTTNG_PATH_MAX];
+ char *formated_name = NULL;
sock = lttcomm_alloc_sock_from_uri(uri);
if (sock == NULL) {
goto error;
}
- ret = lttcomm_create_sock(sock);
- if (ret < 0) {
- goto error;
+ /*
+ * Don't fail to create the socket if the name can't be built as it is
+ * only used for debugging purposes.
+ */
+ ret = uri_to_str_url(uri, uri_str, sizeof(uri_str));
+ uri_str[sizeof(uri_str) - 1] = '\0';
+ if (ret >= 0) {
+ ret = asprintf(&formated_name, "%s socket @ %s", name,
+ uri_str);
+ if (ret < 0) {
+ formated_name = NULL;
+ }
}
- DBG("Listening on sock %d for lttng-live", sock->fd);
+
+ ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &sock_fd,
+ (const char **) (formated_name ? &formated_name : NULL),
+ 1, create_sock, sock);
+ free(formated_name);
+ DBG("Listening on %s socket %d", name, sock->fd);
ret = sock->ops->bind(sock);
if (ret < 0) {
health_code_update();
- live_control_sock = init_socket(live_uri);
+ live_control_sock = init_socket(live_uri, "Live listener");
if (!live_control_sock) {
goto error_sock_control;
}
struct relay_connection *new_conn;
struct lttcomm_sock *newsock;
- newsock = live_control_sock->ops->accept(live_control_sock);
+ newsock = accept_live_sock(live_control_sock,
+ "Live socket to client");
if (!newsock) {
PERROR("accepting control sock");
goto error;
(void) fd_tracker_util_poll_clean(the_fd_tracker, &events);
error_create_poll:
if (live_control_sock->fd >= 0) {
- ret = live_control_sock->ops->close(live_control_sock);
+ int sock_fd = live_control_sock->fd;
+
+ ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker,
+ &sock_fd, 1, close_sock,
+ live_control_sock);
if (ret) {
PERROR("close");
}
+ live_control_sock->fd = -1;
}
lttcomm_destroy_sock(live_control_sock);
error_sock_control:
* overwrite caused by tracefile rotation (in association with
* unlink performed before overwrite).
*/
- if (!vstream->stream_file.fd) {
- int fd;
+ if (!vstream->stream_file.handle) {
char file_path[LTTNG_PATH_MAX];
enum lttng_trace_chunk_status status;
+ struct fs_handle *fs_handle;
ret = utils_stream_file_path(rstream->path_name,
rstream->channel_name, rstream->tracefile_size,
* missing if the stream has been closed (application exits with
* per-pid buffers) and a clear command has been performed.
*/
- status = lttng_trace_chunk_open_file(
+ status = lttng_trace_chunk_open_fs_handle(
vstream->stream_file.trace_chunk,
- file_path, O_RDONLY, 0, &fd, true);
+ file_path, O_RDONLY, 0, &fs_handle, true);
if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE &&
rstream->closed) {
PERROR("Failed to open trace file for viewer stream");
goto error_put;
}
- vstream->stream_file.fd = stream_fd_create(fd);
- if (!vstream->stream_file.fd) {
- if (close(fd)) {
- PERROR("Failed to close viewer stream file");
- }
- goto error_put;
- }
+ vstream->stream_file.handle = fs_handle;
}
ret = check_new_streams(conn);
ret = lttng_index_file_read(vstream->index_file, &packet_index);
if (ret) {
- ERR("Relay error reading index file %d",
- vstream->index_file->fd);
+ ERR("Relay error reading index file");
viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
goto send_reply;
} else {
uint32_t reply_size = sizeof(reply_header);
uint32_t packet_data_len = 0;
ssize_t read_len;
+ uint64_t stream_id;
DBG2("Relay get data packet");
/* From this point on, the error label can be reached. */
memset(&reply_header, 0, sizeof(reply_header));
+ stream_id = (uint64_t) be64toh(get_packet_info.stream_id);
- vstream = viewer_stream_get_by_id(be64toh(get_packet_info.stream_id));
+ vstream = viewer_stream_get_by_id(stream_id);
if (!vstream) {
DBG("Client requested packet of unknown stream id %" PRIu64,
- (uint64_t) be64toh(get_packet_info.stream_id));
+ stream_id);
reply_header.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
goto send_reply_nolock;
} else {
}
pthread_mutex_lock(&vstream->stream->lock);
- lseek_ret = lseek(vstream->stream_file.fd->fd,
+ lseek_ret = fs_handle_seek(vstream->stream_file.handle,
be64toh(get_packet_info.offset), SEEK_SET);
if (lseek_ret < 0) {
- PERROR("lseek fd %d to offset %" PRIu64,
- vstream->stream_file.fd->fd,
+ PERROR("Failed to seek file system handle of viewer stream %" PRIu64
+ " to offset %" PRIu64,
+ stream_id,
(uint64_t) be64toh(get_packet_info.offset));
goto error;
}
- read_len = lttng_read(vstream->stream_file.fd->fd,
+ read_len = fs_handle_read(vstream->stream_file.handle,
reply + sizeof(reply_header), packet_data_len);
if (read_len < packet_data_len) {
- PERROR("Relay reading trace file, fd: %d, offset: %" PRIu64,
- vstream->stream_file.fd->fd,
+ PERROR("Failed to read from file system handle of viewer stream id %" PRIu64
+ ", offset: %" PRIu64,
+ stream_id,
(uint64_t) be64toh(get_packet_info.offset));
goto error;
}
goto end_free;
}
- DBG("Sent %u bytes for stream %" PRIu64, reply_size,
- (uint64_t) be64toh(get_packet_info.stream_id));
+ DBG("Sent %u bytes for stream %" PRIu64, reply_size, stream_id);
end_free:
free(reply);
int viewer_get_metadata(struct relay_connection *conn)
{
int ret = 0;
+ int fd = -1;
ssize_t read_len;
uint64_t len = 0;
char *data = NULL;
len = vstream->stream->metadata_received - vstream->metadata_sent;
/* first time, we open the metadata file */
- if (!vstream->stream_file.fd) {
- int fd;
+ if (!vstream->stream_file.handle) {
+ struct fs_handle *fs_handle;
char file_path[LTTNG_PATH_MAX];
enum lttng_trace_chunk_status status;
struct relay_stream *rstream = vstream->stream;
* missing if the stream has been closed (application exits with
* per-pid buffers) and a clear command has been performed.
*/
- status = lttng_trace_chunk_open_file(
+ status = lttng_trace_chunk_open_fs_handle(
vstream->stream_file.trace_chunk,
- file_path, O_RDONLY, 0, &fd, true);
+ file_path, O_RDONLY, 0, &fs_handle, true);
if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE) {
reply.status = htobe32(LTTNG_VIEWER_NO_NEW_METADATA);
PERROR("Failed to open metadata file for viewer stream");
goto error;
}
- vstream->stream_file.fd = stream_fd_create(fd);
- if (!vstream->stream_file.fd) {
- if (close(fd)) {
- PERROR("Failed to close viewer metadata file");
- }
- goto error;
- }
+ vstream->stream_file.handle = fs_handle;
}
reply.len = htobe64(len);
goto error;
}
- read_len = lttng_read(vstream->stream_file.fd->fd, data, len);
+ fd = fs_handle_get_fd(vstream->stream_file.handle);
+ if (fd < 0) {
+ ERR("Failed to restore viewer stream file system handle");
+ goto error;
+ }
+ read_len = lttng_read(fd, data, len);
+ fs_handle_put_fd(vstream->stream_file.handle);
+ fd = -1;
if (read_len < len) {
PERROR("Relay reading metadata file");
goto error;
(void) lttng_poll_del(events, pollfd);
- ret = close(pollfd);
+ ret = fd_tracker_close_unsuspendable_fd(the_fd_tracker, &pollfd, 1,
+ fd_tracker_util_close_fd, NULL);
if (ret < 0) {
ERR("Closing pollfd %d", pollfd);
}
goto viewer_connections_ht_error;
}
- ret = create_thread_poll_set(&events, 2);
+ ret = create_named_thread_poll_set(&events, 2,
+ "Live viewer worker thread epoll");
if (ret < 0) {
goto error_poll_create;
}
exit:
error:
- lttng_poll_clean(&events);
+ (void) fd_tracker_util_poll_clean(the_fd_tracker, &events);
/* Cleanup remaining connection object. */
rcu_read_lock();