From 444e729da8768494da47e65f155a3ea4919c54fe Mon Sep 17 00:00:00 2001
From: Unknown <>
Date: Thu, 21 Dec 2006 02:51:10 +0000
Subject: [PATCH] add files for 2006-12-21T02:51:10Z

---
 src/osdep/unix/flocksim.h | 117 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 src/osdep/unix/flocksim.h

diff --git a/src/osdep/unix/flocksim.h b/src/osdep/unix/flocksim.h
new file mode 100644
index 0000000..719eba4
--- /dev/null
+++ b/src/osdep/unix/flocksim.h
@@ -0,0 +1,117 @@
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	flock() emulation via fcntl() locking
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *		Internet: MRC@CAC.Washington.EDU
+ *
+ * Date:	10 April 2001
+ * Last Edited:	20 December 2006
+ */
+
+
+#include "dummy.h"		/* get scan_contents() prototype */
+
+#define flock flocksim		/* use ours instead of theirs */
+
+#undef LOCK_SH
+#define LOCK_SH 1		/* shared lock */
+#undef LOCK_EX
+#define LOCK_EX 2		/* exclusive lock */
+#undef LOCK_NB
+#define LOCK_NB 4		/* no blocking */
+#undef LOCK_UN
+#define LOCK_UN 8		/* unlock */
+
+/* Safe locking definitions */
+
+extern int lockslavep;		/* non-zero means slave process */
+
+#undef SAFE_DELETE
+#define SAFE_DELETE(dtb,stream,mbx) (dtb->flags & DR_LOCKING) ? \
+  safe_delete (dtb,stream,mbx) : (*dtb->mbxdel) (stream,mbx)
+#undef SAFE_RENAME
+#define SAFE_RENAME(dtb,stream,old,newname) (dtb->flags & DR_LOCKING) ? \
+  safe_rename (dtb,stream,old,newname) : (*dtb->mbxren) (stream,old,newname)
+#undef SAFE_STATUS
+#define SAFE_STATUS(dtb,stream,mbx,bits) (dtb->flags & DR_LOCKING) ? \
+  safe_status (dtb,stream,mbx,bits) : (*dtb->status) (stream,mbx,bits)
+#undef SAFE_SCAN_CONTENTS
+#define SAFE_SCAN_CONTENTS(dtb,name,contents,csiz,fsiz) \
+  (!dtb || (dtb->flags & DR_LOCKING)) ? \
+   safe_scan_contents (dtb,name,contents,csiz,fsiz) : \
+   scan_contents (dtb,name,contents,csiz,fsiz)
+#undef SAFE_COPY
+#define SAFE_COPY(dtb,stream,seq,mbx,bits) (dtb->flags & DR_LOCKING) ? \
+  safe_copy (dtb,stream,seq,mbx,bits) : (*dtb->copy) (stream,seq,mbx,bits)
+#undef SAFE_APPEND
+#define SAFE_APPEND(dtb,stream,mbx,af,data) (dtb->flags & DR_LOCKING) ? \
+  safe_append (dtb,stream,mbx,af,data) : (*dtb->append) (stream,mbx,af,data)
+
+#undef MM_EXISTS
+#define MM_EXISTS (lockslavep ? slave_exists : mm_exists)
+#undef MM_EXPUNGED
+#define MM_EXPUNGED (lockslavep ? slave_expunged : mm_expunged)
+#undef MM_FLAGS
+#define MM_FLAGS (lockslavep ? slave_flags : mm_flags)
+#undef MM_NOTIFY
+#define MM_NOTIFY (lockslavep ? slave_notify : mm_notify)
+#undef MM_STATUS
+#define MM_STATUS (lockslavep ? slave_status : mm_status)
+#undef MM_LOG
+#define MM_LOG (lockslavep ? slave_log : mm_log)
+#undef MM_CRITICAL
+#define MM_CRITICAL (lockslavep ? slave_critical : mm_critical)
+#undef MM_NOCRITICAL
+#define MM_NOCRITICAL (lockslavep ? slave_nocritical : mm_nocritical)
+#undef MM_DISKERROR
+#define MM_DISKERROR (lockslavep ? slave_diskerror : mm_diskerror)
+#undef MM_FATAL
+#define MM_FATAL (lockslavep ? slave_fatal : mm_fatal)
+#undef MM_APPEND
+#define MM_APPEND(af) (lockslavep ? slave_append : (*af))
+
+/* Function prototypes */
+
+int flocksim (int fd,int operation);
+
+long safe_delete (DRIVER *dtb,MAILSTREAM *stream,char *mbx);
+long safe_rename (DRIVER *dtb,MAILSTREAM *stream,char *old,char *newname);
+long safe_status (DRIVER *dtb,MAILSTREAM *stream,char *mbx,long flags);
+long safe_scan_contents (DRIVER *dtb,char *name,char *contents,
+			 unsigned long csiz,unsigned long fsiz);
+long safe_copy (DRIVER *dtb,MAILSTREAM *stream,char *seq,char *mbx,long flags);
+long safe_append (DRIVER *dtb,MAILSTREAM *stream,char *mbx,append_t af,
+		  void *data);
+
+void slave_exists (MAILSTREAM *stream,unsigned long number);
+void slave_expunged (MAILSTREAM *stream,unsigned long number);
+void slave_flags (MAILSTREAM *stream,unsigned long number);
+void slave_notify (MAILSTREAM *stream,char *string,long errflg);
+void slave_status (MAILSTREAM *stream,char *mailbox,MAILSTATUS *status);
+void slave_log (char *string,long errflg);
+void slave_critical (MAILSTREAM *stream);
+void slave_nocritical (MAILSTREAM *stream);
+long slave_diskerror (MAILSTREAM *stream,long errcode,long serious);
+void slave_fatal (char *string);
+long slave_append (MAILSTREAM *stream,void *data,char **flags,char **date,
+		   STRING **message);
+long slaveproxycopy (MAILSTREAM *stream,char *sequence,char *mailbox,
+		     long options);
-- 
2.40.0