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/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2007 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <features.h>
#if defined __USE_SVID || defined __USE_XOPEN
#include <sys/syscall.h>
#include <sys/wait.h>
#include <cancel.h>
#ifndef __NR_waitid
# include <string.h>
#endif
static int __NC(waitid)(idtype_t idtype, id_t id, siginfo_t *infop, int options)
{
#ifdef __NR_waitid
return INLINE_SYSCALL(waitid, 5, idtype, id, infop, options, NULL);
#else
switch (idtype) {
case P_PID:
if (id <= 0)
goto invalid;
break;
case P_PGID:
if (id < 0 || id == 1)
goto invalid;
id = -id;
break;
case P_ALL:
id = -1;
break;
default:
invalid:
__set_errno(EINVAL);
return -1;
}
memset(infop, 0, sizeof *infop);
infop->si_pid = __NC(waitpid)(id, &infop->si_status, options
# ifdef WEXITED
&~ WEXITED
# endif
);
if (infop->si_pid < 0)
return infop->si_pid;
return 0;
#endif
}
CANCELLABLE_SYSCALL(int, waitid, (idtype_t idtype, id_t id, siginfo_t *infop, int options),
(idtype, id, infop, options))
#endif
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