+
+/*
+ * Try to remove a hierarchy of empty directories, recursively. Don't unlink
+ * any file.
+ */
+LTTNG_HIDDEN
+int utils_recursive_rmdir(const char *path)
+{
+ DIR *dir;
+ int dir_fd, ret = 0, closeret;
+ struct dirent *entry;
+
+ /* Open directory */
+ dir = opendir(path);
+ if (!dir) {
+ PERROR("Cannot open '%s' path", path);
+ return -1;
+ }
+ dir_fd = dirfd(dir);
+ if (dir_fd < 0) {
+ PERROR("dirfd");
+ return -1;
+ }
+
+ while ((entry = readdir(dir))) {
+ if (!strcmp(entry->d_name, ".")
+ || !strcmp(entry->d_name, ".."))
+ continue;
+ switch (entry->d_type) {
+ case DT_DIR:
+ {
+ char subpath[PATH_MAX];
+
+ strncpy(subpath, path, PATH_MAX);
+ subpath[PATH_MAX - 1] = '\0';
+ strncat(subpath, "/",
+ PATH_MAX - strlen(subpath) - 1);
+ strncat(subpath, entry->d_name,
+ PATH_MAX - strlen(subpath) - 1);
+ ret = utils_recursive_rmdir(subpath);
+ if (ret) {
+ goto end;
+ }
+ break;
+ }
+ case DT_REG:
+ ret = -EBUSY;
+ goto end;
+ default:
+ ret = -EINVAL;
+ goto end;
+ }
+ }
+end:
+ closeret = closedir(dir);
+ if (closeret) {
+ PERROR("closedir");
+ }
+ if (!ret) {
+ DBG3("Attempting rmdir %s", path);
+ ret = rmdir(path);
+ }
+ return ret;
+}