strace/rt_sigreturn.c

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/*
* Copyright (c) 2017 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"
#include DEF_MPERS_TYPE(struct_rt_sigframe)
#include "rt_sigframe.h"
#include MPERS_DEFS
#ifndef OFFSETOF_SIGMASK_IN_RT_SIGFRAME
# define OFFSETOF_SIGMASK_IN_RT_SIGFRAME \
offsetof(struct_rt_sigframe, uc.uc_sigmask)
#endif
SYS_FUNC(rt_sigreturn)
{
const kernel_ulong_t sf_addr = get_rt_sigframe_addr(tcp);
if (sf_addr) {
const kernel_ulong_t sm_addr =
sf_addr + OFFSETOF_SIGMASK_IN_RT_SIGFRAME;
tprints("{mask=");
print_sigset_addr(tcp, sm_addr);
tprints("}");
}
return RVAL_DECODED;
}