Save registration time for app

[lttng-tools.git] / src / bin / lttng-sessiond / ust-app.c

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index 42a9b407ea78c7d42b134bc17af7346a89778bc5..8c9277cae225ea80e9df7bf106d304a529e71769 100644 (file)
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -250,7 +250,8 @@ static struct ust_registry_session *get_session_registry(
        case LTTNG_BUFFER_PER_UID:
        {
                struct buffer_reg_uid *reg_uid = buffer_reg_uid_find(
-                               ua_sess->tracing_id, ua_sess->bits_per_long, ua_sess->uid);
+                               ua_sess->tracing_id, ua_sess->bits_per_long,
+                               ua_sess->real_credentials.uid);
                if (!reg_uid) {
                        goto error;
                }
@@ -1831,25 +1832,22 @@ static void shadow_copy_channel(struct ust_app_channel *ua_chan,
 static void shadow_copy_session(struct ust_app_session *ua_sess,
                struct ltt_ust_session *usess, struct ust_app *app)
 {
-       time_t rawtime;
        struct tm *timeinfo;
        char datetime[16];
        int ret;
        char tmp_shm_path[PATH_MAX];
 
-       /* Get date and time for unique app path */
-       time(&rawtime);
-       timeinfo = localtime(&rawtime);
+       timeinfo = localtime(&app->registration_time);
        strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);
 
        DBG2("Shadow copy of session handle %d", ua_sess->handle);
 
        ua_sess->tracing_id = usess->id;
        ua_sess->id = get_next_session_id();
-       ua_sess->uid = app->uid;
-       ua_sess->gid = app->gid;
-       ua_sess->euid = usess->uid;
-       ua_sess->egid = usess->gid;
+       ua_sess->real_credentials.uid = app->uid;
+       ua_sess->real_credentials.gid = app->gid;
+       ua_sess->effective_credentials.uid = usess->uid;
+       ua_sess->effective_credentials.gid = usess->gid;
        ua_sess->buffer_type = usess->buffer_type;
        ua_sess->bits_per_long = app->bits_per_long;
 
@@ -1870,7 +1868,9 @@ static void shadow_copy_session(struct ust_app_session *ua_sess,
                break;
        case LTTNG_BUFFER_PER_UID:
                ret = snprintf(ua_sess->path, sizeof(ua_sess->path),
-                               DEFAULT_UST_TRACE_UID_PATH, ua_sess->uid, app->bits_per_long);
+                               DEFAULT_UST_TRACE_UID_PATH,
+                               ua_sess->real_credentials.uid,
+                               app->bits_per_long);
                break;
        default:
                assert(0);
@@ -1990,10 +1990,10 @@ static int setup_buffer_reg_pid(struct ust_app_session *ua_sess,
                        app->bits_per_long, app->uint8_t_alignment,
                        app->uint16_t_alignment, app->uint32_t_alignment,
                        app->uint64_t_alignment, app->long_alignment,
-                       app->byte_order, app->version.major,
-                       app->version.minor, reg_pid->root_shm_path,
-                       reg_pid->shm_path,
-                       ua_sess->euid, ua_sess->egid);
+                       app->byte_order, app->version.major, app->version.minor,
+                       reg_pid->root_shm_path, reg_pid->shm_path,
+                       ua_sess->effective_credentials.uid,
+                       ua_sess->effective_credentials.gid);
        if (ret < 0) {
                /*
                 * reg_pid->registry->reg.ust is NULL upon error, so we need to
@@ -2882,10 +2882,9 @@ static int create_channel_per_uid(struct ust_app *app,
 
        notification_ret = notification_thread_command_add_channel(
                        notification_thread_handle, session->name,
-                       ua_sess->euid, ua_sess->egid,
-                       ua_chan->name,
-                       ua_chan->key,
-                       LTTNG_DOMAIN_UST,
+                       ua_sess->effective_credentials.uid,
+                       ua_sess->effective_credentials.gid, ua_chan->name,
+                       ua_chan->key, LTTNG_DOMAIN_UST,
                        ua_chan->attr.subbuf_size * ua_chan->attr.num_subbuf);
        if (notification_ret != LTTNG_OK) {
                ret = - (int) notification_ret;
@@ -2983,10 +2982,9 @@ static int create_channel_per_pid(struct ust_app *app,
 
        cmd_ret = notification_thread_command_add_channel(
                        notification_thread_handle, session->name,
-                       ua_sess->euid, ua_sess->egid,
-                       ua_chan->name,
-                       ua_chan->key,
-                       LTTNG_DOMAIN_UST,
+                       ua_sess->effective_credentials.uid,
+                       ua_sess->effective_credentials.gid, ua_chan->name,
+                       ua_chan->key, LTTNG_DOMAIN_UST,
                        ua_chan->attr.subbuf_size * ua_chan->attr.num_subbuf);
        if (cmd_ret != LTTNG_OK) {
                ret = - (int) cmd_ret;
@@ -3376,6 +3374,8 @@ void ust_app_add(struct ust_app *app)
        assert(app);
        assert(app->notify_sock >= 0);
 
+       app->registration_time = time(NULL);
+
        rcu_read_lock();
 
        /*
@@ -5876,7 +5876,7 @@ void ust_app_destroy(struct ust_app *app)
  */
 enum lttng_error_code ust_app_snapshot_record(
                const struct ltt_ust_session *usess,
-               const struct snapshot_output *output, int wait,
+               const struct consumer_output *output, int wait,
                uint64_t nb_packets_per_stream)
 {
        int ret = 0;
@@ -5964,7 +5964,7 @@ enum lttng_error_code ust_app_snapshot_record(
 
                        /* Get the right consumer socket for the application. */
                        socket = consumer_find_socket_by_bitness(app->bits_per_long,
-                                       output->consumer);
+                                       output);
                        if (!socket) {
                                status = LTTNG_ERR_INVALID;
                                goto error;
@@ -5983,8 +5983,11 @@ enum lttng_error_code ust_app_snapshot_record(
                         cds_lfht_for_each_entry(ua_sess->channels->ht, &chan_iter.iter,
                                        ua_chan, node.node) {
                                status = consumer_snapshot_channel(socket,
-                                               ua_chan->key, output,
-                                               0, ua_sess->euid, ua_sess->egid,
+                                               ua_chan->key, output, 0,
+                                               ua_sess->effective_credentials
+                                                               .uid,
+                                               ua_sess->effective_credentials
+                                                               .gid,
                                                pathname, wait,
                                                nb_packets_per_stream);
                                switch (status) {
@@ -6003,8 +6006,9 @@ enum lttng_error_code ust_app_snapshot_record(
                                continue;
                        }
                        status = consumer_snapshot_channel(socket,
-                                       registry->metadata_key, output,
-                                       1, ua_sess->euid, ua_sess->egid,
+                                       registry->metadata_key, output, 1,
+                                       ua_sess->effective_credentials.uid,
+                                       ua_sess->effective_credentials.gid,
                                        pathname, wait, 0);
                        switch (status) {
                        case LTTNG_OK:
@@ -6352,8 +6356,12 @@ enum lttng_error_code ust_app_rotate_session(struct ltt_session *session)
                        /* Rotate the data channels. */
                        cds_lfht_for_each_entry(ua_sess->channels->ht, &chan_iter.iter,
                                        ua_chan, node.node) {
-                               ret = consumer_rotate_channel(socket, ua_chan->key,
-                                               ua_sess->euid, ua_sess->egid,
+                               ret = consumer_rotate_channel(socket,
+                                               ua_chan->key,
+                                               ua_sess->effective_credentials
+                                                               .uid,
+                                               ua_sess->effective_credentials
+                                                               .gid,
                                                ua_sess->consumer,
                                                /* is_metadata_channel */ false);
                                if (ret < 0) {
@@ -6367,8 +6375,10 @@ enum lttng_error_code ust_app_rotate_session(struct ltt_session *session)
 
                        /* Rotate the metadata channel. */
                        (void) push_metadata(registry, usess->consumer);
-                       ret = consumer_rotate_channel(socket, registry->metadata_key,
-                                       ua_sess->euid, ua_sess->egid,
+                       ret = consumer_rotate_channel(socket,
+                                       registry->metadata_key,
+                                       ua_sess->effective_credentials.uid,
+                                       ua_sess->effective_credentials.gid,
                                        ua_sess->consumer,
                                        /* is_metadata_channel */ true);
                        if (ret < 0) {