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.
68 lines
1.5 KiB
C
68 lines
1.5 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 Roland McGrath <roland@redhat.com>
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* Copyright (c) 2007-2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2014-2018 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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#define MS_MGC_VAL 0xc0ed0000 /* old magic mount flag number */
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#define MS_MGC_MSK 0xffff0000 /* old magic mount flag mask */
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#include "xlat/mount_flags.h"
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SYS_FUNC(mount)
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{
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bool ignore_type = false;
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bool ignore_data = false;
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bool old_magic = false;
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kernel_ulong_t flags = tcp->u_arg[3];
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/* Discard magic */
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if ((flags & MS_MGC_MSK) == MS_MGC_VAL) {
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flags &= ~MS_MGC_MSK;
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old_magic = true;
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}
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if (flags & MS_REMOUNT)
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ignore_type = true;
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else if (flags & (MS_BIND | MS_MOVE | MS_SHARED
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| MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
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ignore_type = ignore_data = true;
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printpath(tcp, tcp->u_arg[0]);
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tprints(", ");
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printpath(tcp, tcp->u_arg[1]);
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tprints(", ");
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if (ignore_type)
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printaddr(tcp->u_arg[2]);
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else
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printstr(tcp, tcp->u_arg[2]);
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tprints(", ");
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if (old_magic) {
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print_xlat(MS_MGC_VAL);
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if (flags)
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tprints("|");
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}
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if (flags || !old_magic)
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printflags64(mount_flags, flags, "MS_???");
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tprints(", ");
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if (ignore_data)
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printaddr(tcp->u_arg[4]);
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else
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printstr(tcp, tcp->u_arg[4]);
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return RVAL_DECODED;
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}
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