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relayd: replace uses of block FDs by the fs_handle interface
[lttng-tools.git]
/
src
/
bin
/
lttng-relayd
/
live.c
diff --git
a/src/bin/lttng-relayd/live.c
b/src/bin/lttng-relayd/live.c
index eaa4b1b73de618369a5c3e87b9fca5ba8f86ee82..eed82a6c86512b6acea63bf5a71704c73ae98b1f 100644
(file)
--- a/
src/bin/lttng-relayd/live.c
+++ b/
src/bin/lttng-relayd/live.c
@@
-18,8
+18,10
@@
*/
#define _LGPL_SOURCE
*/
#define _LGPL_SOURCE
+#include <fcntl.h>
#include <getopt.h>
#include <grp.h>
#include <getopt.h>
#include <grp.h>
+#include <inttypes.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
@@
-33,40
+35,39
@@
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.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/futex.h>
-#include <urcu/uatomic.h>
#include <urcu/rculist.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/common.h>
+#include <common/compat/endian.h>
#include <common/compat/poll.h>
#include <common/compat/socket.h>
#include <common/compat/poll.h>
#include <common/compat/socket.h>
-#include <common/compat/endian.h>
#include <common/defaults.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/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/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/uri.h>
#include <common/utils.h>
-#include <
common/fd-tracker/utils
.h>
+#include <
lttng/lttng
.h>
#include "cmd.h"
#include "cmd.h"
+#include "connection.h"
+#include "ctf-trace.h"
+#include "health-relayd.h"
#include "live.h"
#include "lttng-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 "session.h"
-#include "ctf-trace.h"
-#include "connection.h"
+#include "stream.h"
+#include "testpoint.h"
+#include "utils.h"
#include "viewer-session.h"
#include "viewer-session.h"
+#include "viewer-stream.h"
#define SESSION_BUF_DEFAULT_COUNT 16
#define SESSION_BUF_DEFAULT_COUNT 16
@@
-1629,10
+1630,10
@@
int viewer_get_next_index(struct relay_connection *conn)
* overwrite caused by tracefile rotation (in association with
* unlink performed before overwrite).
*/
* 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;
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,
ret = utils_stream_file_path(rstream->path_name,
rstream->channel_name, rstream->tracefile_size,
@@
-1647,9
+1648,9
@@
int viewer_get_next_index(struct relay_connection *conn)
* missing if the stream has been closed (application exits with
* per-pid buffers) and a clear command has been performed.
*/
* 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_f
i
le(
+ status = lttng_trace_chunk_open_f
s_hand
le(
vstream->stream_file.trace_chunk,
vstream->stream_file.trace_chunk,
- file_path, O_RDONLY, 0, &f
d
, true);
+ file_path, O_RDONLY, 0, &f
s_handle
, true);
if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE &&
rstream->closed) {
if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE &&
rstream->closed) {
@@
-1659,13
+1660,7
@@
int viewer_get_next_index(struct relay_connection *conn)
PERROR("Failed to open trace file for viewer stream");
goto error_put;
}
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 = check_new_streams(conn);
@@
-1678,8
+1673,7
@@
int viewer_get_next_index(struct relay_connection *conn)
ret = lttng_index_file_read(vstream->index_file, &packet_index);
if (ret) {
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 {
viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR);
goto send_reply;
} else {
@@
-1769,6
+1763,7
@@
int viewer_get_packet(struct relay_connection *conn)
uint32_t reply_size = sizeof(reply_header);
uint32_t packet_data_len = 0;
ssize_t read_len;
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");
DBG2("Relay get data packet");
@@
-1783,11
+1778,12
@@
int viewer_get_packet(struct relay_connection *conn)
/* From this point on, the error label can be reached. */
memset(&reply_header, 0, sizeof(reply_header));
/* 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,
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 {
reply_header.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR);
goto send_reply_nolock;
} else {
@@
-1803,19
+1799,21
@@
int viewer_get_packet(struct relay_connection *conn)
}
pthread_mutex_lock(&vstream->stream->lock);
}
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) {
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;
}
(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) {
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;
}
(uint64_t) be64toh(get_packet_info.offset));
goto error;
}
@@
-1849,8
+1847,7
@@
send_reply_nolock:
goto end_free;
}
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);
end_free:
free(reply);
@@
-1870,6
+1867,7
@@
static
int viewer_get_metadata(struct relay_connection *conn)
{
int ret = 0;
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;
ssize_t read_len;
uint64_t len = 0;
char *data = NULL;
@@
-1939,8
+1937,8
@@
int viewer_get_metadata(struct relay_connection *conn)
len = vstream->stream->metadata_received - vstream->metadata_sent;
/* first time, we open the metadata file */
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;
char file_path[LTTNG_PATH_MAX];
enum lttng_trace_chunk_status status;
struct relay_stream *rstream = vstream->stream;
@@
-1958,9
+1956,9
@@
int viewer_get_metadata(struct relay_connection *conn)
* missing if the stream has been closed (application exits with
* per-pid buffers) and a clear command has been performed.
*/
* 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_f
i
le(
+ status = lttng_trace_chunk_open_f
s_hand
le(
vstream->stream_file.trace_chunk,
vstream->stream_file.trace_chunk,
- file_path, O_RDONLY, 0, &f
d
, true);
+ file_path, O_RDONLY, 0, &f
s_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);
if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
if (status == LTTNG_TRACE_CHUNK_STATUS_NO_FILE) {
reply.status = htobe32(LTTNG_VIEWER_NO_NEW_METADATA);
@@
-1973,13
+1971,7
@@
int viewer_get_metadata(struct relay_connection *conn)
PERROR("Failed to open metadata file for viewer stream");
goto error;
}
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);
}
reply.len = htobe64(len);
@@
-1989,7
+1981,14
@@
int viewer_get_metadata(struct relay_connection *conn)
goto error;
}
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;
if (read_len < len) {
PERROR("Relay reading metadata file");
goto error;
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