Viewing file:  truncate.c (1.06 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* ========================================================================
* 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);
}
|