Fix: kernel/ust snapshot backward compat for 2.10 relay
[lttng-tools.git] / src / bin / lttng-sessiond / ust-consumer.c
index f9a29e49ecd2625f8e6503a8a66a812d1bb72957..9ab54e9d7a64553f9e0d61d31d2e54661ad67ef9 100644 (file)
 #include "session.h"
 #include "lttng-sessiond.h"
 
-/*
- * Return allocated full pathname of the session using the consumer trace path
- * and subdir if available.
- *
- * The caller can safely free(3) the returned value. On error, NULL is
- * returned.
- */
-static char *setup_channel_trace_path(struct consumer_output *consumer,
-               struct ust_app_session *ua_sess)
-{
-       int ret;
-       char *pathname;
-
-       assert(consumer);
-       assert(ua_sess);
-
-       health_code_update();
-
-       /*
-        * Allocate the string ourself to make sure we never exceed
-        * LTTNG_PATH_MAX.
-        */
-       pathname = zmalloc(LTTNG_PATH_MAX);
-       if (!pathname) {
-               goto error;
-       }
-
-       /* Get correct path name destination */
-       if (consumer->type == CONSUMER_DST_NET &&
-                       consumer->relay_major_version == 2 &&
-                       consumer->relay_minor_version < 11) {
-               ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s%s",
-                               consumer->dst.net.base_dir,
-                               consumer->chunk_path, consumer->domain_subdir,
-                               ua_sess->path);
-       } else {
-               ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s",
-                               consumer->domain_subdir, ua_sess->path);
-       }
-       DBG3("Userspace consumer trace path relative to current trace chunk: \"%s\"",
-                       pathname);
-       if (ret < 0) {
-               PERROR("Failed to format channel path");
-               goto error;
-       } else if (ret >= LTTNG_PATH_MAX) {
-               ERR("Truncation occurred while formatting channel path");
-               ret = -1;
-               goto error;
-       }
-
-       return pathname;
-error:
-       free(pathname);
-       return NULL;
-}
-
 /*
  * Send a single channel to the consumer using command ASK_CHANNEL_CREATION.
  *
@@ -122,7 +66,7 @@ static int ask_channel_creation(struct ust_app_session *ua_sess,
 
        is_local_trace = consumer->net_seq_index == -1ULL;
        /* Format the channel's path (relative to the current trace chunk). */
-       pathname = setup_channel_trace_path(consumer, ua_sess);
+       pathname = setup_channel_trace_path(consumer, ua_sess->path);
        if (!pathname) {
                ret = -1;
                goto error;
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