#include "utils.h"
#include "defaults.h"
+/*
+ * Resolve the './' and '../' strings in the middle of a path using
+ * our very own way to do it, so that it works even if the directory
+ * does not exist
+ */
+LTTNG_HIDDEN
+char *utils_resolve_relative(const char *path)
+{
+ char *next, *previous, *slash, *start_path, *absolute_path = NULL;
+
+ /* Safety net */
+ if (path == NULL) {
+ goto error;
+ }
+
+ /* Allocate memory for the absolute path */
+ absolute_path = zmalloc(PATH_MAX);
+ if (absolute_path == NULL) {
+ PERROR("zmalloc expand path");
+ goto error;
+ }
+
+ /* Copy the path in the absolute path */
+ strncpy(absolute_path, path, PATH_MAX);
+
+ /* As long as we find '/./' in the path string */
+ while ((next = strstr(absolute_path, "/./"))) {
+
+ /* We prepare the start_path not containing it */
+ start_path = strndup(absolute_path, next - absolute_path);
+
+ /* And we concatenate it with the part after this string */
+ snprintf(absolute_path, PATH_MAX, "%s%s", start_path, next + 2);
+
+ free(start_path);
+ }
+
+ /* As long as we find '/../' in the path string */
+ while ((next = strstr(absolute_path, "/../"))) {
+ /* If the path starts with '/../', there's a problem */
+ if (next == absolute_path) {
+ ERR("%s: Path cannot be resolved", path);
+ goto error;
+ }
+
+ /* We find the last level of directory */
+ previous = absolute_path;
+ while ((slash = strpbrk(previous + 1, "/")) && slash != next) {
+ previous = slash;
+ }
+
+ /* Then we prepare the start_path not containing it */
+ start_path = strndup(absolute_path, previous - absolute_path);
+
+ /* And we concatenate it with the part after the '/../' */
+ snprintf(absolute_path, PATH_MAX, "%s%s", start_path, next + 3);
+
+ free(start_path);
+ }
+
+ return absolute_path;
+
+error:
+ free(absolute_path);
+ return NULL;
+}
+
+
/*
* Return the realpath(3) of the path even if the last directory token does not
* exist. For example, with /tmp/test1/test2, if test2/ does not exist but the