merges r23277 and r23280 from trunk into ruby_1_9_1.

--
* configure.in (ac_cv_func_daemon): use daemon(3) only on *BSD.

* process.c (proc_daemon): double fork to ensure not having ctty.
  [ruby-core:23311]
--
* configure.in (ac_cv_func_daemon): use daemon(3) only on *BSD.

* process.c (proc_daemon): double fork to ensure not having ctty.
  [ruby-core:23305]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@23343 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 1 deletions

diff --git a/process.c b/process.c
index 834520b60..6e704f605 100644
--- a/process.c
+++ b/process.c
@@ -4216,7 +4216,7 @@ proc_daemon(int argc, VALUE *argv)
 #elif defined(HAVE_FORK)
     switch (rb_fork(0, 0, 0, Qnil)) {
       case -1:
-	return (-1);
+	return INT2FIX(-1);
       case 0:
 	break;
       default:
@@ -4225,6 +4225,16 @@ proc_daemon(int argc, VALUE *argv)
 
     proc_setsid();
 
+    /* must not be process-leader */
+    switch (rb_fork(0, 0, 0, Qnil)) {
+      case -1:
+	return INT2FIX(-1);
+      case 0:
+	break;
+      default:
+	_exit(0);
+    }
+
     if (!RTEST(nochdir))
 	(void)chdir("/");