+ return res; /* caller frees */
+}
+
+/* The code below assumes each path returned can fit into a protocol
+ * chunk. If this turns out not to be true at some point in the
+ * future then we'll need to modify the code a bit to handle it.
+ */
+#if PATH_MAX > GUESTFS_MAX_CHUNK_SIZE
+#error "PATH_MAX > GUESTFS_MAX_CHUNK_SIZE"
+#endif
+
+/* Has one FileOut parameter. */
+int
+do_find0 (const char *dir)
+{
+ struct stat statbuf;
+ int r;
+ FILE *fp;
+ char *cmd;
+ char *sysrootdir;
+ size_t sysrootdirlen, len;
+ char str[GUESTFS_MAX_CHUNK_SIZE];
+
+ sysrootdir = sysroot_path (dir);
+ if (!sysrootdir) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+
+ r = stat (sysrootdir, &statbuf);
+ if (r == -1) {
+ reply_with_perror ("%s", dir);
+ free (sysrootdir);
+ return -1;
+ }
+ if (!S_ISDIR (statbuf.st_mode)) {
+ reply_with_error ("%s: not a directory", dir);
+ free (sysrootdir);
+ return -1;
+ }
+
+ sysrootdirlen = strlen (sysrootdir);
+
+ if (asprintf_nowarn (&cmd, "find %Q -print0", sysrootdir) == -1) {
+ reply_with_perror ("asprintf");
+ free (sysrootdir);
+ return -1;
+ }
+ free (sysrootdir);
+
+ if (verbose)
+ fprintf (stderr, "%s\n", cmd);
+
+ fp = popen (cmd, "r");
+ if (fp == NULL) {
+ reply_with_perror ("%s", cmd);
+ free (cmd);
+ return -1;
+ }
+ free (cmd);
+
+ /* Now we must send the reply message, before the file contents. After
+ * this there is no opportunity in the protocol to send any error
+ * message back. Instead we can only cancel the transfer.
+ */
+ reply (NULL, NULL);
+
+ while ((r = input_to_nul (fp, str, GUESTFS_MAX_CHUNK_SIZE)) > 0) {
+ if (verbose)
+ printf ("find0 string: %s\n", str);
+
+ len = strlen (str);
+ if (len <= sysrootdirlen)
+ continue;
+
+ /* Remove the directory part of the path before sending it. */
+ if (send_file_write (str + sysrootdirlen, r - sysrootdirlen) < 0) {
+ pclose (fp);
+ return -1;
+ }
+ }
+
+ if (ferror (fp)) {
+ perror (dir);
+ send_file_end (1); /* Cancel. */
+ pclose (fp);
+ return -1;
+ }
+
+ if (pclose (fp) != 0) {
+ perror (dir);
+ send_file_end (1); /* Cancel. */
+ return -1;
+ }
+
+ if (send_file_end (0)) /* Normal end of file. */
+ return -1;
+
+ return 0;