Mercurial > hgrepos > hgweb.cgi > imapext
diff src/osdep/unix/truncate.c @ 0:ada5e610ab86
imap-2007e
author | yuuji@gentei.org |
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date | Mon, 14 Sep 2009 15:17:45 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/osdep/unix/truncate.c Mon Sep 14 15:17:45 2009 +0900 @@ -0,0 +1,43 @@ +/* ======================================================================== + * 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: Truncate a file + * + * 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: 30 June 1994 + * Last Edited: 30 August 2006 + */ + +/* Emulator for ftruncate() call + * Accepts: file descriptor + * length + * Returns: 0 if success, -1 if failure + */ + +int ftruncate (int fd,off_t length) +{ + struct flock fb; + fb.l_whence = 0; + fb.l_len = 0; + fb.l_start = length; + fb.l_type = F_WRLCK; /* write lock on file space */ + return fcntl (fd,F_FREESP,&fb); +}