#include "context.h"
#include "event.h"
#include "kernel.h"
+#include "kernel-consumer.h"
#include "modprobe.h"
#include "shm.h"
#include "ust-ctl.h"
#define CONSUMERD_FILE "lttng-consumerd"
-struct consumer_data {
- enum lttng_consumer_type type;
-
- pthread_t thread; /* Worker thread interacting with the consumer */
- sem_t sem;
-
- /* Mutex to control consumerd pid assignation */
- pthread_mutex_t pid_mutex;
- pid_t pid;
-
- int err_sock;
- int cmd_sock;
-
- /* consumer error and command Unix socket path */
- char err_unix_sock_path[PATH_MAX];
- char cmd_unix_sock_path[PATH_MAX];
-};
-
/* Const values */
const char default_home_dir[] = DEFAULT_HOME_DIR;
const char default_tracing_group[] = DEFAULT_TRACING_GROUP;
*/
static void cleanup(void)
{
- int ret, i;
+ int ret;
char *cmd;
struct ltt_session *sess, *stmp;
DBG("Unloading kernel modules");
modprobe_remove_lttng_all();
}
-
- /*
- * Closing all pipes used for communication between threads.
- */
- for (i = 0; i < 2; i++) {
- if (kernel_poll_pipe[i] >= 0) {
- ret = close(kernel_poll_pipe[i]);
- if (ret) {
- PERROR("close");
- }
- }
- }
- for (i = 0; i < 2; i++) {
- if (thread_quit_pipe[i] >= 0) {
- ret = close(thread_quit_pipe[i]);
- if (ret) {
- PERROR("close");
- }
- }
- }
- for (i = 0; i < 2; i++) {
- if (apps_cmd_pipe[i] >= 0) {
- ret = close(apps_cmd_pipe[i]);
- if (ret) {
- PERROR("close");
- }
- }
- }
+ utils_close_pipe(kernel_poll_pipe);
+ utils_close_pipe(thread_quit_pipe);
+ utils_close_pipe(apps_cmd_pipe);
/* <fun> */
DBG("%c[%d;%dm*** assert failed :-) *** ==> %c[%dm%c[%d;%dm"
}
}
-/*
- * Send all stream fds of kernel channel to the consumer.
- */
-static int send_kconsumer_channel_streams(struct consumer_data *consumer_data,
- int sock, struct ltt_kernel_channel *channel,
- uid_t uid, gid_t gid)
-{
- int ret;
- struct ltt_kernel_stream *stream;
- struct lttcomm_consumer_msg lkm;
-
- DBG("Sending streams of channel %s to kernel consumer",
- channel->channel->name);
-
- /* Send channel */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
- lkm.u.channel.channel_key = channel->fd;
- lkm.u.channel.max_sb_size = channel->channel->attr.subbuf_size;
- lkm.u.channel.mmap_len = 0; /* for kernel */
- DBG("Sending channel %d to consumer", lkm.u.channel.channel_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer channel");
- goto error;
- }
-
- /* Send streams */
- cds_list_for_each_entry(stream, &channel->stream_list.head, list) {
- if (!stream->fd) {
- continue;
- }
- lkm.cmd_type = LTTNG_CONSUMER_ADD_STREAM;
- lkm.u.stream.channel_key = channel->fd;
- lkm.u.stream.stream_key = stream->fd;
- lkm.u.stream.state = stream->state;
- lkm.u.stream.output = channel->channel->attr.output;
- lkm.u.stream.mmap_len = 0; /* for kernel */
- lkm.u.stream.uid = uid;
- lkm.u.stream.gid = gid;
- strncpy(lkm.u.stream.path_name, stream->pathname, PATH_MAX - 1);
- lkm.u.stream.path_name[PATH_MAX - 1] = '\0';
- DBG("Sending stream %d to consumer", lkm.u.stream.stream_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- ret = lttcomm_send_fds_unix_sock(sock, &stream->fd, 1);
- if (ret < 0) {
- PERROR("send consumer stream ancillary data");
- goto error;
- }
- }
-
- DBG("consumer channel streams sent");
-
- return 0;
-
-error:
- return ret;
-}
-
-/*
- * Send all stream fds of the kernel session to the consumer.
- */
-static int send_kconsumer_session_streams(struct consumer_data *consumer_data,
- struct ltt_kernel_session *session)
-{
- int ret;
- struct ltt_kernel_channel *chan;
- struct lttcomm_consumer_msg lkm;
- int sock = session->consumer_fd;
-
- DBG("Sending metadata stream fd");
-
- /* Extra protection. It's NOT supposed to be set to -1 at this point */
- if (session->consumer_fd < 0) {
- session->consumer_fd = consumer_data->cmd_sock;
- }
-
- if (session->metadata_stream_fd >= 0) {
- /* Send metadata channel fd */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
- lkm.u.channel.channel_key = session->metadata->fd;
- lkm.u.channel.max_sb_size = session->metadata->conf->attr.subbuf_size;
- lkm.u.channel.mmap_len = 0; /* for kernel */
- DBG("Sending metadata channel %d to consumer", lkm.u.channel.channel_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer channel");
- goto error;
- }
-
- /* Send metadata stream fd */
- lkm.cmd_type = LTTNG_CONSUMER_ADD_STREAM;
- lkm.u.stream.channel_key = session->metadata->fd;
- lkm.u.stream.stream_key = session->metadata_stream_fd;
- lkm.u.stream.state = LTTNG_CONSUMER_ACTIVE_STREAM;
- lkm.u.stream.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
- lkm.u.stream.mmap_len = 0; /* for kernel */
- lkm.u.stream.uid = session->uid;
- lkm.u.stream.gid = session->gid;
- strncpy(lkm.u.stream.path_name, session->metadata->pathname, PATH_MAX - 1);
- lkm.u.stream.path_name[PATH_MAX - 1] = '\0';
- DBG("Sending metadata stream %d to consumer", lkm.u.stream.stream_key);
- ret = lttcomm_send_unix_sock(sock, &lkm, sizeof(lkm));
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- ret = lttcomm_send_fds_unix_sock(sock, &session->metadata_stream_fd, 1);
- if (ret < 0) {
- PERROR("send consumer stream");
- goto error;
- }
- }
-
- cds_list_for_each_entry(chan, &session->channel_list.head, list) {
- ret = send_kconsumer_channel_streams(consumer_data, sock, chan,
- session->uid, session->gid);
- if (ret < 0) {
- goto error;
- }
- }
-
- DBG("consumer fds (metadata and channel streams) sent");
-
- return 0;
-
-error:
- return ret;
-}
-
/*
* Notify UST applications using the shm mmap futex.
*/
* stream fds.
*/
if (session->kernel_session->consumer_fds_sent == 1) {
- ret = send_kconsumer_channel_streams(consumer_data,
- session->kernel_session->consumer_fd, channel,
- session->uid, session->gid);
+ ret = kernel_consumer_send_channel_stream(consumer_data,
+ channel, session->uid, session->gid);
if (ret < 0) {
goto error;
}
session->consumer_fd = kconsumer_data.cmd_sock;
}
- ret = send_kconsumer_session_streams(&kconsumer_data, session);
+ ret = kernel_consumer_send_session(&kconsumer_data, session);
if (ret < 0) {
ret = LTTCOMM_KERN_CONSUMER_FAIL;
goto error;
return ret;
}
-/*
- * Create the pipe used to wake up the kernel thread.
- * Closed in cleanup().
- */
-static int create_kernel_poll_pipe(void)
-{
- int ret, i;
-
- ret = pipe(kernel_poll_pipe);
- if (ret < 0) {
- PERROR("kernel poll pipe");
- goto error;
- }
-
- for (i = 0; i < 2; i++) {
- ret = fcntl(kernel_poll_pipe[i], F_SETFD, FD_CLOEXEC);
- if (ret < 0) {
- PERROR("fcntl kernel_poll_pipe");
- goto error;
- }
- }
-
-error:
- return ret;
-}
-
-/*
- * Create the application command pipe to wake thread_manage_apps.
- * Closed in cleanup().
- */
-static int create_apps_cmd_pipe(void)
-{
- int ret, i;
-
- ret = pipe(apps_cmd_pipe);
- if (ret < 0) {
- PERROR("apps cmd pipe");
- goto error;
- }
-
- for (i = 0; i < 2; i++) {
- ret = fcntl(apps_cmd_pipe[i], F_SETFD, FD_CLOEXEC);
- if (ret < 0) {
- PERROR("fcntl apps_cmd_pipe");
- goto error;
- }
- }
-
-error:
- return ret;
-}
-
/*
* Create the lttng run directory needed for all global sockets and pipe.
*/
}
/* Setup the kernel pipe for waking up the kernel thread */
- if ((ret = create_kernel_poll_pipe()) < 0) {
+ if ((ret = utils_create_pipe_cloexec(kernel_poll_pipe)) < 0) {
goto exit;
}
/* Setup the thread apps communication pipe. */
- if ((ret = create_apps_cmd_pipe()) < 0) {
+ if ((ret = utils_create_pipe_cloexec(apps_cmd_pipe)) < 0) {
goto exit;
}
projects / lttng-tools.git / blobdiff