shithub: plan9front

ref: e45bd6814a125e7a175ff19e23252608a060d847
dir: /sys/src/libc/9sys/getppid.c/

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#include	<u.h>
#include	<libc.h>

int
getppid(void)
{
	char b[20];
	int f;

	memset(b, 0, sizeof(b));
	f = open("/dev/ppid", OREAD|OCEXEC);
	if(f >= 0) {
		read(f, b, sizeof(b));
		close(f);
	}
	return atol(b);
}