+#include "buffer-registry.h"
+#include "session.h"
+
+/*
+ * Return allocated full pathname of the session using the consumer trace path
+ * and subdir if available. On a successful allocation, the directory of the
+ * trace is created with the session credentials.
+ *
+ * The caller can safely free(3) the returned value. On error, NULL is
+ * returned.
+ */
+static char *setup_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 our self the string to make sure we never exceed PATH_MAX. */
+ pathname = zmalloc(PATH_MAX);
+ if (!pathname) {
+ goto error;
+ }
+
+ /* Get correct path name destination */
+ if (consumer->type == CONSUMER_DST_LOCAL) {
+ /* Set application path to the destination path */
+ ret = snprintf(pathname, PATH_MAX, "%s%s%s",
+ consumer->dst.trace_path, consumer->subdir, ua_sess->path);
+ if (ret < 0) {
+ PERROR("snprintf channel path");
+ goto error;
+ }
+
+ /* Create directory. Ignore if exist. */
+ ret = run_as_mkdir_recursive(pathname, S_IRWXU | S_IRWXG,
+ ua_sess->euid, ua_sess->egid);
+ if (ret < 0) {
+ if (errno != EEXIST) {
+ ERR("Trace directory creation error");
+ goto error;
+ }
+ }
+ } else {
+ ret = snprintf(pathname, PATH_MAX, "%s%s", consumer->subdir,
+ ua_sess->path);
+ if (ret < 0) {
+ PERROR("snprintf channel path");
+ goto error;
+ }
+ }
+
+ return pathname;
+
+error:
+ free(pathname);
+ return NULL;
+}