util: Add become_daemon.h

Rename argument no_process_group to no_session to describe what it
actually does.  Consistently use "daemon" for name of daemon argument.
Add documentation.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Andreas Schneider <asn@samba.org>

3 files changed, 88 insertions, 28 deletions

diff --git a/lib/util/become_daemon.c b/lib/util/become_daemon.c
index 1c674d4c918..7b84299dc28 100644
--- a/lib/util/become_daemon.c
+++ b/lib/util/become_daemon.c
@@ -31,7 +31,7 @@
 #include "close_low_fd.h"
 #include "debug.h"
 
-#include "samba_util.h"
+#include "become_daemon.h"
 
 /*******************************************************************
  Close the low 3 fd's and open dev/null in their place.
diff --git a/lib/util/become_daemon.h b/lib/util/become_daemon.h
new file mode 100644
index 00000000000..d697a689cdc
--- /dev/null
+++ b/lib/util/become_daemon.h
@@ -0,0 +1,86 @@
+/*
+   Unix SMB/CIFS implementation.
+   Samba utility functions
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Jeremy Allison 2001-2002
+   Copyright (C) Simo Sorce 2001
+   Copyright (C) Jim McDonough (jmcd@us.ibm.com)  2003.
+   Copyright (C) James J Myers 2003
+
+   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 _BECOME_DAEMON_H
+#define _BECOME_DAEMON_H
+
+#include <stdbool.h>
+
+/**
+ * @file become_daemon.h
+ *
+ * @brief Utilities for demonising
+ */
+
+/**
+ * @brief Close the low 3 file descriptors and open /dev/null in their place
+ *
+ * @param[in] stdin_too Should stdin be closed?
+ * @param[in] stdout_too Should stdout be closed?
+ * @param[in] stderr_too Should stderr be closed?
+**/
+void close_low_fds(bool stdin_too, bool stdout_too, bool stderr_too);
+
+/**
+ * @brief Become a daemon, optionally discarding the controlling terminal
+ *
+ * @param[in] do_fork Should the process fork?
+ * @param[in] no_session Don't start a new session
+ * @param[in] log_stdour Should stdout be closed?
+**/
+void become_daemon(bool do_fork, bool no_session, bool log_stdout);
+
+/**
+ * @brief Exit daemon and log an error message at ERR level
+ *
+ * Optionally report failure to systemd if systemd integration is
+ * enabled.
+ *
+ * @param[in] msg Message to log, generated from error if NULL
+ * @param[in] error Errno of error that occurred
+**/
+void exit_daemon(const char *msg, int error);
+
+/**
+ * @brief Log at ERR level that the daemon is ready to serve connections
+ *
+ * Optionally report status to systemd if systemd integration is enabled.
+ *
+ * @param[in] daemon Name of daemon to include it message
+**/
+void daemon_ready(const char *daemon);
+
+/**
+ * @brief Log at ERR level the specified daemon status
+ *
+ * For example if it is not ready to serve connections and is waiting
+ * for some event to happen.
+ *
+ * Optionally report status to systemd if systemd integration is enabled.
+ *
+ * @param[in] daemon Name of daemon to include it message
+ * @param[in] msg Message to log
+**/
+void daemon_status(const char *daemon, const char *msg);
+
+#endif /* _BECOME_DAEMON_H */
diff --git a/lib/util/samba_util.h b/lib/util/samba_util.h
index 0bb04b3567c..3daf3dfdfd0 100644
--- a/lib/util/samba_util.h
+++ b/lib/util/samba_util.h
@@ -567,33 +567,7 @@ int gen_fnmatch(const char *pattern, const char *string);
 #include "idtree.h"
 #include "idtree_random.h"
 
-/**
- Close the low 3 fd's and open dev/null in their place
-**/
-_PUBLIC_ void close_low_fds(bool stdin_too, bool stdout_too, bool stderr_too);
-
-/**
- Become a daemon, discarding the controlling terminal.
-**/
-_PUBLIC_ void become_daemon(bool do_fork, bool no_process_group, bool log_stdout);
-
-/**
- Exit daemon and print error message to the log at level 0
- Optionally report failure to systemd if systemd integration is enabled
-**/
-_PUBLIC_ void exit_daemon(const char *msg, int error);
-
-/**
- Report that the daemon is ready to serve connections to the log at level 0
- Optionally report status to systemd if systemd integration is enabled
-**/
-_PUBLIC_ void daemon_ready(const char *daemon);
-
-/*
- * Report the daemon status. For example if it is not ready to serve connections
- * and is waiting for some event to happen.
- */
-_PUBLIC_ void daemon_status(const char *name, const char *msg);
+#include "become_daemon.h"
 
 /**
  * @brief Get a password from the console.