usr/src/lib/libc/compat-43/killpg.c

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)killpg.c    5.3 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#include <signal.h>
#include <errno.h>

/*
 * Backwards-compatible killpg().
 */
#if __STDC__
killpg(pid_t pgid, int sig)
#else
killpg(pgid, sig)
        pid_t pgid;
        int sig;
#endif
{
        if (pgid == 1) {
                errno = ESRCH;
                return (-1);
        }
        return (kill(-pgid, sig));
}