Restore file descriptor limit in subprocesses

Problem reported by Philipp Stephani (Bug#24869).
* src/callproc.c (child_setup) [!DOS_NT]:
Call restore_nofile_limit in the child.
* src/process.c (nofile_limit) [HAVE_SETRLIMIT]: New static var.
(restore_nofile_limit): New function.
(init_process_emacs) [HAVE_SETRLIMIT]: Set the new var.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/callproc.c b/src/callproc.c
index 8ed28556e0d..dc3ca4ac102 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -1315,6 +1315,9 @@ child_setup (int in, int out, int err, char **new_argv, bool set_pgrp,
 #else  /* not WINDOWSNT */
 
 #ifndef MSDOS
+
+  restore_nofile_limit ();
+
   /* Redirect file descriptors and clear the close-on-exec flag on the
      redirected ones.  IN, OUT, and ERR are close-on-exec so they
      need not be closed explicitly.  */