5 files changed, 115 insertions, 3 deletions
diff --git a/lib/util/become_daemon.c b/lib/util/become_daemon.c
index 5a97b65407..3d06a4363d 100644
--- a/lib/util/become_daemon.c
+++ b/lib/util/become_daemon.c
@@ -66,10 +66,10 @@ _PUBLIC_ void close_low_fds(bool stderr_too)
  Become a daemon, discarding the controlling terminal.
 ****************************************************************************/
 
-_PUBLIC_ void become_daemon(bool Fork, bool no_process_group)
+_PUBLIC_ void become_daemon(bool do_fork, bool no_process_group)
 {
-	if (Fork) {
-		if (fork()) {
+	if (do_fork) {
+		if (sys_fork()) {
 			_exit(0);
 		}
 	}
diff --git a/lib/util/system.c b/lib/util/system.c
index 9bd1800233..9bf5de1a83 100644
--- a/lib/util/system.c
+++ b/lib/util/system.c
@@ -88,3 +88,32 @@ _PUBLIC_ struct in_addr sys_inet_makeaddr(int net, int host)
 	return in2;
 }
 
+/**************************************************************************
+ Wrapper for fork. Ensures we clear our pid cache.
+****************************************************************************/
+
+static pid_t mypid = (pid_t)-1;
+
+_PUBLIC_ pid_t sys_fork(void)
+{
+	pid_t forkret = fork();
+
+	if (forkret == (pid_t)0) {
+		/* Child - reset mypid so sys_getpid does a system call. */
+		mypid = (pid_t) -1;
+	}
+
+	return forkret;
+}
+
+/**************************************************************************
+ Wrapper for getpid. Ensures we only do a system call *once*.
+****************************************************************************/
+
+_PUBLIC_ pid_t sys_getpid(void)
+{
+	if (mypid == (pid_t)-1)
+		mypid = getpid();
+
+	return mypid;
+}
diff --git a/lib/util/tevent_unix.c b/lib/util/tevent_unix.c
new file mode 100644
index 0000000000..b89d5cd4d4
--- /dev/null
+++ b/lib/util/tevent_unix.c
@@ -0,0 +1,46 @@
+/*
+   Unix SMB/CIFS implementation.
+   Wrap unix errno around tevent_req
+   Copyright (C) Volker Lendecke 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "tevent_unix.h"
+#include "../replace/replace.h"
+
+bool tevent_req_is_unix_error(struct tevent_req *req, int *perrno)
+{
+	enum tevent_req_state state;
+	uint64_t err;
+
+	if (!tevent_req_is_error(req, &state, &err)) {
+		return false;
+	}
+	switch (state) {
+	case TEVENT_REQ_TIMED_OUT:
+		*perrno = ETIMEDOUT;
+		break;
+	case TEVENT_REQ_NO_MEMORY:
+		*perrno = ENOMEM;
+		break;
+	case TEVENT_REQ_USER_ERROR:
+		*perrno = err;
+		break;
+	default:
+		*perrno = EINVAL;
+		break;
+	}
+	return true;
+}
diff --git a/lib/util/tevent_unix.h b/lib/util/tevent_unix.h
new file mode 100644
index 0000000000..dc3ffaef33
--- /dev/null
+++ b/lib/util/tevent_unix.h
@@ -0,0 +1,27 @@
+/*
+   Unix SMB/CIFS implementation.
+   Wrap unix errno around tevent_req
+   Copyright (C) Volker Lendecke 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _TEVENT_UNIX_H
+#define _TEVENT_UNIX_H
+
+#include "../tevent/tevent.h"
+
+bool tevent_req_is_unix_error(struct tevent_req *req, int *perrno);
+
+#endif
diff --git a/lib/util/util.h b/lib/util/util.h
index d3e446f488..27f94cd685 100644
--- a/lib/util/util.h
+++ b/lib/util/util.h
@@ -134,6 +134,16 @@ apparent reason.
 _PUBLIC_ struct hostent *sys_gethostbyname(const char *name);
 _PUBLIC_ struct in_addr sys_inet_makeaddr(int net, int host);
 
+/**
+ * Wrapper for fork used to invalid pid cache.
+ **/
+_PUBLIC_ pid_t sys_fork(void);
+
+/**
+ * Wrapper for getpid. Ensures we only do a system call *once*.
+ **/
+_PUBLIC_ pid_t sys_getpid(void);
+
 /* The following definitions come from lib/util/genrand.c  */
 
 /**