home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Sprite 1984 - 1993
/
Sprite 1984 - 1993.iso
/
src
/
lib
/
c
/
unixSyscall
/
dup.c
< prev
next >
Wrap
C/C++ Source or Header
|
1988-06-19
|
2KB
|
86 lines
/*
* dup.c --
*
* Procedure to map from Unix dup system call to Sprite.
*
* Copyright (C) 1986 Regents of the University of California
* All rights reserved.
*/
#ifndef lint
static char rcsid[] = "$Header: dup.c,v 1.1 88/06/19 14:31:13 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
#include "sprite.h"
#include "fs.h"
#include "compatInt.h"
/*
*----------------------------------------------------------------------
*
* dup --
*
* Procedure to map from Unix dup system call to Sprite Fs_GetNewID.
*
* Results:
* UNIX_ERROR is returned upon error, with the actual error code
* stored in errno. Upon success, the new file descriptor is returned.
*
* Side effects:
* A new open file descriptor is allocated for the process.
*
*----------------------------------------------------------------------
*/
int
dup(oldStreamID)
int oldStreamID; /* original stream identifier */
{
ReturnStatus status; /* result returned by Fs_GetNewID */
int newStreamID = FS_ANYID; /* new stream identifier */
status = Fs_GetNewID(oldStreamID, &newStreamID);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return(UNIX_ERROR);
} else {
return(newStreamID);
}
}
/*
*----------------------------------------------------------------------
*
* dup2 --
*
* Procedure to map from Unix dup2 system call to Sprite Fs_GetNewID.
*
* Results:
* UNIX_ERROR is returned upon error, with the actual error code
* stored in errno. Upon success, the new file descriptor is returned.
*
* Side effects:
* A new open file descriptor is allocated for the process.
*
*----------------------------------------------------------------------
*/
int
dup2(oldStreamID, newStreamID)
int oldStreamID; /* original stream identifier */
int newStreamID; /* new stream identifier */
{
ReturnStatus status; /* result returned by Fs_GetNewID */
status = Fs_GetNewID(oldStreamID, &newStreamID);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return(UNIX_ERROR);
} else {
return(UNIX_SUCCESS);
}
}