conntrackd: allow to limit the number of simultaneous child processes

This patch allows to limit the number of simultaneous child processes.
This is required by the next patch that replaces disposable handlers
to commit and flush with permanent handlers.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/include/process.h b/include/process.h
index a7f07ea..9d29f22 100644
--- a/include/process.h
+++ b/include/process.h
@@ -1,14 +1,23 @@
 #ifndef _PROCESS_H_
 #define _PROCESS_H_
 
+enum process_type {
+	CTD_PROC_ANY,		/* any type */
+	CTD_PROC_FLUSH,		/* flush process */
+	CTD_PROC_COMMIT,	/* commit process */
+};
+
+#define CTD_PROC_F_EXCL 	(1 << 0)  /* only one process at a time */
+
 struct child_process {
 	struct list_head	head;
 	int			pid;
+	int			type;
 	void			(*cb)(void *data);
 	void			*data;
 };
 
-int fork_process_new(void (*cb)(void *data), void *data);
+int fork_process_new(int type, int flags, void (*cb)(void *data), void *data);
 int fork_process_delete(int pid);
 
 #endif