1 files changed, 78 insertions, 0 deletions
diff --git a/contrib/sendmail/src/shmticklib.c b/contrib/sendmail/src/shmticklib.c
new file mode 100644
index 0000000..6f5e301
--- /dev/null
+++ b/contrib/sendmail/src/shmticklib.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1999-2000 Sendmail, Inc. and its suppliers.
+ *	All rights reserved.
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the sendmail distribution.
+ *
+ * Contributed by Exactis.com, Inc.
+ *
+ */
+
+#include <sm/gen.h>
+SM_RCSID("@(#)$Id: shmticklib.c,v 8.14 2001/09/11 04:05:16 gshapiro Exp $")
+
+#if _FFR_SHM_STATUS
+# include <sys/types.h>
+# include <sys/ipc.h>
+# include <sys/shm.h>
+
+# include "statusd_shm.h"
+
+/*
+**  SHMTICK -- increment a shared memory variable
+**
+**	Parameters:
+**		inc_me -- identity of shared memory segment
+**		what -- which variable to increment
+**
+**	Returns:
+**		none
+*/
+
+void
+shmtick(inc_me, what)
+	int inc_me;
+	int what;
+{
+	static int shmid = -1;
+	static STATUSD_SHM *sp = (STATUSD_SHM *)-1;
+	static unsigned int cookie = 0;
+
+	if (shmid < 0)
+	{
+		int size = sizeof(STATUSD_SHM);
+
+		shmid = shmget(STATUSD_SHM_KEY, size, 0);
+		if (shmid < 0)
+			return;
+	}
+	if ((unsigned long *) sp == (unsigned long *)-1)
+	{
+		sp = (STATUSD_SHM *) shmat(shmid, NULL, 0);
+		if ((unsigned long *) sp == (unsigned long *) -1)
+			return;
+	}
+	if (sp->magic != STATUSD_MAGIC)
+	{
+		/*
+		**  possible race condition, wait for
+		**  statusd to initialize.
+		*/
+
+		return;
+	}
+	if (what >= STATUSD_LONGS)
+		what = STATUSD_LONGS - 1;
+	if (inc_me >= STATUSD_LONGS)
+		inc_me = STATUSD_LONGS - 1;
+
+	if (sp->ul[STATUSD_COOKIE] != cookie)
+	{
+		cookie = sp->ul[STATUSD_COOKIE];
+		++(sp->ul[inc_me]);
+	}
+	++(sp->ul[what]);
+}
+#endif /* _FFR_SHM_STATUS */