From faa0f7ffe757043fb1b7ddb7b0643816a554dadc Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 23 Oct 2003 14:28:44 +0000
Subject: [PATCH] Use daemon(3) function where available.

svn:r665
---
 configure.in      | 2 +-
 src/common/util.c | 8 +++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/configure.in b/configure.in
index 7933cf7678..bb8fa12f47 100644
--- a/configure.in
+++ b/configure.in
@@ -136,7 +136,7 @@ dnl These headers are not essential
 
 AC_CHECK_HEADERS(stdint.h sys/types.h inttypes.h sys/wait.h netinet/in.h arpa/inet.h)
 
-AC_CHECK_FUNCS(gettimeofday ftime socketpair uname)
+AC_CHECK_FUNCS(gettimeofday ftime socketpair uname daemon)
 
 dnl In case we aren't given a working stdint.h, we'll need to grow our own.
 dnl Watch out.
diff --git a/src/common/util.c b/src/common/util.c
index a85e22ae8a..3d20f81049 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -548,7 +548,13 @@ get_uname(void)
 }
       
 void daemonize(void) {
-#ifndef MS_WINDOWS
+#ifdef HAVE_DAEMON
+  if (daemon(0 /* chdir to / */,
+	     0 /* Redirect std* to /dev/null */)) {
+    log_fn(LOG_ERR, "Daemon returned an error: %s", strerror(errno));
+    exit(1);
+  }
+#elif ! defined(MS_WINDOWS)
   /* Fork; parent exits. */
   if (fork())
     exit(0);