jehanne/sys/src/libc/9sys/getpid.c

27 lines
610 B
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
int
getpid(void)
{
char b[20];
int f;
memset(b, 0, sizeof(b));
f = open("#c/pid", 0);
if(f >= 0) {
read(f, b, sizeof(b));
close(f);
}
return atol(b);
}