1 files changed, 81 insertions, 0 deletions

diff --git a/openbsd-compat/daemon.c b/openbsd-compat/daemon.c
new file mode 100644
index 000000000..f704a9048
--- /dev/null
+++ b/openbsd-compat/daemon.c
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "includes.h"
+
+#ifndef HAVE_DAEMON
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$OpenBSD: daemon.c,v 1.2 1996/08/19 08:22:13 tholo Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+int
+daemon(nochdir, noclose)
+        int nochdir, noclose;
+{
+        int fd;
+
+        switch (fork()) {
+        case -1:
+                return (-1);
+        case 0:
+                break;
+        default:
+#ifdef HAVE_CYGWIN
+                /*
+                 * This sleep avoids a race condition which kills the
+                 * child process if parent is started by a NT/W2K service.
+                 */
+                sleep(1);
+#endif
+                _exit(0);
+        }
+
+        if (setsid() == -1)
+                return (-1);
+
+        if (!nochdir)
+                (void)chdir("/");
+
+        if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
+                (void)dup2(fd, STDIN_FILENO);
+                (void)dup2(fd, STDOUT_FILENO);
+                (void)dup2(fd, STDERR_FILENO);
+                if (fd > 2)
+                        (void)close (fd);
+        }
+        return (0);
+}
+
+#endif /* !HAVE_DAEMON */
+