Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
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* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
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* Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
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* Copyright (c) 2015-2017 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "defs.h"
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#include DEF_MPERS_TYPE(stack_t)
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#include <signal.h>
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#include MPERS_DEFS
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#include "xlat/sigaltstack_flags.h"
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static void
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print_stack_t(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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stack_t ss;
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if (umove_or_printaddr(tcp, addr, &ss))
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return;
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tprints("{ss_sp=");
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printaddr(ptr_to_kulong(ss.ss_sp));
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tprints(", ss_flags=");
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printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
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tprintf(", ss_size=%" PRI_klu "}", (kernel_ulong_t) ss.ss_size);
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}
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SYS_FUNC(sigaltstack)
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{
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if (entering(tcp)) {
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print_stack_t(tcp, tcp->u_arg[0]);
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tprints(", ");
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} else {
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print_stack_t(tcp, tcp->u_arg[1]);
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}
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return 0;
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}
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