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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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unixSyscall
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getppid.c
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C/C++ Source or Header
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1988-07-29
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2KB
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56 lines
/*
* getppid.c --
*
* Source code for the getppid library procedure.
*
* Copyright 1988 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: getppid.c,v 1.2 88/07/29 17:40:34 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
#include <sprite.h>
#include <proc.h>
#include "compatInt.h"
/*
*----------------------------------------------------------------------
*
* getppid --
*
* Procedure to map from Unix getppid system call to Sprite Proc_GetIDs.
*
* Results:
* UNIX_ERROR is returned upon error, with the actual error code
* stored in errno. Upon success, the ID of the parent of the current
* process is returned.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
getppid()
{
ReturnStatus status; /* result returned by Proc_GetIDs */
int parentPid; /* ID of parent of current process */
status = Proc_GetIDs((int *) NULL, &parentPid, (int *) NULL, (int *) NULL);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return(UNIX_ERROR);
} else {
return(parentPid);
}
}