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/*
Copyright (C) 2004-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <shlib-compat.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <sys/wait.h>
#include <sysdep.h>
extern int __syscall_wait6 (idtype_t itype, int64_t id,
int *status, int options,
struct rusage *rusage, siginfo_t *infop);
libc_hidden_proto (__syscall_wait6)
#define DO_WAITID simulated_waitid
static int simulated_waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options);
#if !defined __ASSUME_WAIT6
static int __have_wait6;
#endif
static inline int
do_waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options)
{
int ret;
int status;
#ifndef __ASSUME_WAIT6
if (__have_wait6 >= 0)
#endif
{
ret = INLINE_SYSCALL (wait6, 6, idtype, id, &status, options, NULL, infop);
if (ret == 0 && infop != NULL)
{
memset(infop, 0, sizeof(*infop));
}
if (ret >= 0)
return 0;
#ifndef __ASSUME_WAIT6
if (errno == ENOSYS)
{
__have_wait6 = -1;
}
else
#endif
{
return ret;
}
}
return simulated_waitid(idtype, id, infop, options);
}
#define waitid __unused_waitid_alias
#include <sysdeps/posix/waitid.c>
#undef waitid
versioned_symbol (libc, __waitid, waitid, GLIBC_2_18);
#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_18)
/* it used to be: */
#define OLD_P_ALL 0
#define OLD_P_PID 1
#define OLD_P_PGID 2
int
__waitid_old (idtype_t oldtype, id_t id, siginfo_t *infop, int options)
{
idtype_t newtype;
switch (oldtype)
{
case OLD_P_ALL:
newtype = P_ALL;
break;
case OLD_P_PID:
newtype = P_PID;
break;
case OLD_P_PGID:
newtype = P_PGID;
break;
default:
newtype = oldtype;
}
return __waitid(newtype, id, infop, options);
}
compat_symbol (libc, __waitid_old, waitid, GLIBC_2_1);
#endif
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