+/*
+ * Call back once for each regular file below a directory.
+ *
+ * Traverse the given directory recursively and call the supplied callback for
+ * each regular file encountered. The first argument to the callback will be
+ * the path to the regular file and the second argument will be the data
+ * pointer. All file types except regular files and directories are ignored. In
+ * particular, symlinks are not followed. Subdirectories are ignored silently
+ * if the calling process has insufficient access permissions.
+ */
+static int for_each_file_in_dir(const char *dirname,
+ int (*func)(const char *, void *), void *data)
+{
+ int ret;
+ DIR *dir;
+ struct dirent *entry;
+
+ dir = opendir(dirname);
+ if (!dir)
+ return errno == EACCES? 1 : -ERRNO_TO_PARA_ERROR(errno);
+ /* scan cwd recursively */
+ while ((entry = readdir(dir))) {
+ char *tmp;
+ struct stat s;
+
+ if (!strcmp(entry->d_name, "."))
+ continue;
+ if (!strcmp(entry->d_name, ".."))
+ continue;
+ tmp = make_message("%s/%s", dirname, entry->d_name);
+ ret = 0;
+ if (lstat(tmp, &s) != -1) {
+ if (S_ISREG(s.st_mode))
+ ret = func(tmp, data);
+ else if (S_ISDIR(s.st_mode))
+ ret = for_each_file_in_dir(tmp, func, data);
+ }
+ free(tmp);
+ if (ret < 0)
+ goto out;
+ }
+ ret = 1;
+out:
+ closedir(dir);
+ return ret;
+}
+