-/*
- * 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;
-}
-