[PATCH hurd] utils/mount: start translators with stderr closed

[Justus Winter]

Apparently some users of 'mount' do not cope with any output being
generated from the spawned translator.

* utils/mount.c (do_mount): Start translators with stderr closed.
---
 utils/mount.c | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/utils/mount.c b/utils/mount.c
index c5736ba..5fa35bc 100644
--- a/utils/mount.c
+++ b/utils/mount.c
@@ -420,9 +420,36 @@ do_mount (struct fs *fs, int remount)
       }
 
       explain ("settrans -a");
-      err = fshelp_start_translator (open_node, NULL, fsopts,
-                                    fsopts, fsopts_len, timeout,
-                                    &active_control);
+      {
+       mach_port_t ports[INIT_PORT_MAX];
+       mach_port_t fds[STDERR_FILENO + 1];
+       int ints[INIT_INT_MAX];
+       int i;
+
+       for (i = 0; i < INIT_PORT_MAX; i++)
+         ports[i] = MACH_PORT_NULL;
+       for (i = 0; i < STDERR_FILENO + 1; i++)
+         fds[i] = MACH_PORT_NULL;
+       memset (ints, 0, INIT_INT_MAX * sizeof(int));
+
+       ports[INIT_PORT_CWDIR] = getcwdir ();
+       ports[INIT_PORT_CRDIR] = getcrdir ();
+       ports[INIT_PORT_AUTH] = getauth ();
+
+       err = fshelp_start_translator_long (open_node, NULL,
+                                           fsopts, fsopts, fsopts_len,
+                                           fds, MACH_MSG_TYPE_COPY_SEND,
+                                           STDERR_FILENO + 1,
+                                           ports, MACH_MSG_TYPE_COPY_SEND,
+                                           INIT_PORT_MAX,
+                                           ints, INIT_INT_MAX,
+                                           geteuid (),
+                                           timeout, &active_control);
+       for (i = 0; i < INIT_PORT_MAX; i++)
+         mach_port_deallocate (mach_task_self (), ports[i]);
+       for (i = 0; i <= STDERR_FILENO; i++)
+         mach_port_deallocate (mach_task_self (), fds[i]);
+      }
       /* If ERR is due to a problem opening the translated node, we print
         that name, otherwise, the name of the translator.  */
       if (open_err)
-- 
2.1.4