Fix: skip uid registry when metadata key is 0

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

diff --git a/src/bin/lttng-sessiond/consumer.c b/src/bin/lttng-sessiond/consumer.c
index f89bb1df290fbc8d5f6682e1f1089448974ca40e..bc973ddf80e78e90d535036ac1de3427266ac8d3 100644 (file)
--- a/src/bin/lttng-sessiond/consumer.c
+++ b/src/bin/lttng-sessiond/consumer.c
@@ -735,7 +735,8 @@ error:
  *
  * The consumer socket lock must be held by the caller.
  */
-int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd)
+int consumer_send_fds(struct consumer_socket *sock, const int *fds,
+               size_t nb_fd)
 {
        int ret;
 
@@ -833,7 +834,8 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
                uint32_t ust_app_uid,
                int64_t blocking_timeout,
                const char *root_shm_path,
-               const char *shm_path)
+               const char *shm_path,
+               uint64_t trace_archive_id)
 {
        assert(msg);
 
@@ -862,6 +864,7 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
        msg->u.ask_channel.monitor = monitor;
        msg->u.ask_channel.ust_app_uid = ust_app_uid;
        msg->u.ask_channel.blocking_timeout = blocking_timeout;
+       msg->u.ask_channel.trace_archive_id = trace_archive_id;
 
        memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid));
 
@@ -889,8 +892,7 @@ void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg,
 /*
  * Init channel communication message structure.
  */
-void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
-               enum lttng_consumer_command cmd,
+void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg,
                uint64_t channel_key,
                uint64_t session_id,
                const char *pathname,
@@ -913,7 +915,7 @@ void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
        memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
 
        /* Send channel */
-       msg->cmd_type = cmd;
+       msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL;
        msg->u.channel.channel_key = channel_key;
        msg->u.channel.session_id = session_id;
        msg->u.channel.uid = uid;
@@ -939,20 +941,21 @@ void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg,
 /*
  * Init stream communication message structure.
  */
-void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg,
-               enum lttng_consumer_command cmd,
+void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg,
                uint64_t channel_key,
                uint64_t stream_key,
-               int cpu)
+               int32_t cpu,
+               uint64_t trace_archive_id)
 {
        assert(msg);
 
        memset(msg, 0, sizeof(struct lttcomm_consumer_msg));
 
-       msg->cmd_type = cmd;
+       msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM;
        msg->u.stream.channel_key = channel_key;
        msg->u.stream.stream_key = stream_key;
        msg->u.stream.cpu = cpu;
+       msg->u.stream.trace_archive_id = trace_archive_id;
 }
 
 void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
@@ -973,7 +976,7 @@ void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg,
  */
 int consumer_send_stream(struct consumer_socket *sock,
                struct consumer_output *dst, struct lttcomm_consumer_msg *msg,
-               int *fds, size_t nb_fd)
+               const int *fds, size_t nb_fd)
 {
        int ret;
 
@@ -1429,7 +1432,8 @@ end:
  */
 int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
                struct snapshot_output *output, int metadata, uid_t uid, gid_t gid,
-               const char *session_path, int wait, uint64_t nb_packets_per_stream)
+               const char *session_path, int wait, uint64_t nb_packets_per_stream,
+               uint64_t trace_archive_id)
 {
        int ret;
        struct lttcomm_consumer_msg msg;
@@ -1445,6 +1449,7 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
        msg.u.snapshot_channel.key = key;
        msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream;
        msg.u.snapshot_channel.metadata = metadata;
+       msg.u.snapshot_channel.trace_archive_id = trace_archive_id;
 
        if (output->consumer->type == CONSUMER_DST_NET) {
                msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index;
@@ -1460,6 +1465,16 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
                if (ret < 0) {
                        ret = -LTTNG_ERR_NOMEM;
                        goto error;
+               } else if (ret >= sizeof(msg.u.snapshot_channel.pathname)) {
+                       ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%i bytes required) with path \"%s/%s/%s-%s-%" PRIu64 "%s\"",
+                                       sizeof(msg.u.snapshot_channel.pathname),
+                                       ret, output->consumer->dst.net.base_dir,
+                                       output->consumer->subdir,
+                                       output->name, output->datetime,
+                                       output->nb_snapshot,
+                                       session_path);
+                       ret = -LTTNG_ERR_SNAPSHOT_FAIL;
+                       goto error;
                }
        } else {
                ret = snprintf(msg.u.snapshot_channel.pathname,
@@ -1472,7 +1487,16 @@ int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key,
                if (ret < 0) {
                        ret = -LTTNG_ERR_NOMEM;
                        goto error;
+               } else if (ret >= sizeof(msg.u.snapshot_channel.pathname)) {
+                       ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%i bytes required) with path \"%s/%s-%s-%" PRIu64 "%s\"",
+                                       sizeof(msg.u.snapshot_channel.pathname),
+                                       ret, output->consumer->dst.session_root_path,
+                                       output->name, output->datetime, output->nb_snapshot,
+                                       session_path);
+                       ret = -LTTNG_ERR_SNAPSHOT_FAIL;
+                       goto error;
                }
+
                msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL;
 
                /* Create directory. Ignore if exist. */
@@ -1752,7 +1776,7 @@ int consumer_rotate_pending_relay(struct consumer_socket *socket,
 
        assert(socket);
 
-       DBG("Consumer rotate pending on relay for session %" PRIu64 ", chunk id % " PRIu64,
+       DBG("Consumer rotate pending on relay for session %" PRIu64 ", chunk id %" PRIu64,
                        session_id, chunk_id);
        assert(output->type == CONSUMER_DST_NET);