+static int read_ini_data(int fd, void *data, size_t size)
+{
+ char *p = data;
+ int ret = 0;
+ FILE *fp;
+ int dupfd;
+
+ dupfd = dup(fd);
+ if (dupfd < 0)
+ return errno;
+
+ fp = fdopen(dupfd, "r");
+ if (!fp) {
+ ret = errno;
+ close(dupfd);
+ goto out;
+ }
+
+ while (1) {
+ ssize_t len;
+ char buf[OPT_LEN_MAX+1], *sub;
+
+ if (!fgets(buf, sizeof(buf), fp)) {
+ if (ferror(fp)) {
+ if (errno == EAGAIN || errno == EINTR)
+ continue;
+ ret = errno;
+ }
+ break;
+ }
+
+ sub = fio_option_dup_subs(buf);
+ len = strlen(sub);
+ if (len + 1 > size) {
+ log_err("fio: no space left to read data\n");
+ free(sub);
+ ret = ENOSPC;
+ break;
+ }
+
+ memcpy(p, sub, len);
+ free(sub);
+ p += len;
+ *p = '\0';
+ size -= len;
+ }
+
+ fclose(fp);
+out:
+ return ret;
+}
+