home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Almathera Ten Pack 2: CDPD 1
/
Almathera Ten on Ten - Disc 2: CDPD 1.iso
/
pd
/
351-375
/
351
/
pdc
/
libsrc.lzh
/
LibSrc
/
SysIO
/
close.c
< prev
next >
Wrap
C/C++ Source or Header
|
1990-04-07
|
1KB
|
44 lines
/*
* Libraries and headers for PDC release 3.3 (C) 1989 Lionel Hummel.
* PDC Software Distribution (C) 1989 Lionel Hummel and Paul Petersen.
* PDC I/O Library (C) 1987 by J.A. Lydiatt.
*
* This code is freely redistributable upon the conditions that this
* notice remains intact and that modified versions of this file not
* be included as part of the PDC Software Distribution without the
* express consent of the copyright holders. No warrantee of any
* kind is provided with this code. For further information, contact:
*
* PDC Software Distribution Internet: BIX:
* P.O. Box 4006 or hummel@cs.uiuc.edu lhummel
* Urbana, IL 61801-8801 petersen@uicsrd.csrd.uiuc.edu
*/
/* close - closes an open file and free's its fd */
#include <errno.h>
#include <fcntl.h>
extern void Close();
close(fd)
int fd; /* The file descriptor. */
{
struct _device *p;
extern struct _device *_devtab;
p = &_devtab[fd];
if ( !(0 <= fd && fd < _numdev) || p->_fileHandle == 0) {
errno = EBADF;
return(-1);
}
if ( !(p->_mode & O_STDIO) ) {
Close( p->_fileHandle );
}
p->_mode = 0;
p->_fileHandle = 0;
return 0;
}