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futex.c
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futex.c
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/*
* Copyright (c) 2002-2003 Roland McGrath <roland@redhat.com>
* Copyright (c) 2007-2008 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2009 Andreas Schwab <schwab@redhat.com>
* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifndef FUTEX_PRIVATE_FLAG
# define FUTEX_PRIVATE_FLAG 128
#endif
#ifndef FUTEX_CLOCK_REALTIME
# define FUTEX_CLOCK_REALTIME 256
#endif
#include "xlat/futexops.h"
#include "xlat/futexwakeops.h"
#include "xlat/futexwakecmps.h"
SYS_FUNC(futex)
{
const long uaddr = tcp->u_arg[0];
const int op = tcp->u_arg[1];
const int cmd = op & 127;
const long timeout = tcp->u_arg[3];
const long uaddr2 = tcp->u_arg[4];
const unsigned int val = tcp->u_arg[2];
const unsigned int val2 = tcp->u_arg[3];
const unsigned int val3 = tcp->u_arg[5];
printaddr(uaddr);
tprints(", ");
printxval(futexops, op, "FUTEX_???");
switch (cmd) {
case FUTEX_WAIT:
tprintf(", %u", val);
tprints(", ");
print_timespec(tcp, timeout);
break;
case FUTEX_LOCK_PI:
tprints(", ");
print_timespec(tcp, timeout);
break;
case FUTEX_WAIT_BITSET:
tprintf(", %u", val);
tprints(", ");
print_timespec(tcp, timeout);
tprintf(", %#x", val3);
break;
case FUTEX_WAKE_BITSET:
tprintf(", %u", val);
tprintf(", %#x", val3);
break;
case FUTEX_REQUEUE:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
break;
case FUTEX_CMP_REQUEUE:
case FUTEX_CMP_REQUEUE_PI:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
tprintf(", %u", val3);
break;
case FUTEX_WAKE_OP:
tprintf(", %u", val);
tprintf(", %u, ", val2);
printaddr(uaddr2);
tprints(", {");
if ((val3 >> 28) & 8)
tprints("FUTEX_OP_OPARG_SHIFT|");
printxval(futexwakeops, (val3 >> 28) & 0x7, "FUTEX_OP_???");
tprintf(", %u, ", (val3 >> 12) & 0xfff);
printxval(futexwakecmps, (val3 >> 24) & 0xf, "FUTEX_OP_CMP_???");
tprintf(", %u}", val3 & 0xfff);
break;
case FUTEX_WAIT_REQUEUE_PI:
tprintf(", %u", val);
tprints(", ");
print_timespec(tcp, timeout);
tprints(", ");
printaddr(uaddr2);
break;
case FUTEX_FD:
case FUTEX_WAKE:
tprintf(", %u", val);
break;
case FUTEX_UNLOCK_PI:
case FUTEX_TRYLOCK_PI:
break;
default:
tprintf(", %u", val);
tprintf(", %#lx", timeout);
tprints(", ");
printaddr(uaddr2);
tprintf(", %#x", val3);
break;
}
return RVAL_DECODED;
}