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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2005 Roland McGrath <roland@redhat.com>
* Copyright (c) 2007-2015 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2014-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#define MS_MGC_VAL 0xc0ed0000 /* old magic mount flag number */
#define MS_MGC_MSK 0xffff0000 /* old magic mount flag mask */
#include "xlat/mount_flags.h"
SYS_FUNC(mount)
{
bool ignore_type = false;
bool ignore_data = false;
bool old_magic = false;
kernel_ulong_t flags = tcp->u_arg[3];
/* Discard magic */
if ((flags & MS_MGC_MSK) == MS_MGC_VAL) {
flags &= ~MS_MGC_MSK;
old_magic = true;
}
if (flags & MS_REMOUNT)
ignore_type = true;
else if (flags & (MS_BIND | MS_MOVE | MS_SHARED
| MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
ignore_type = ignore_data = true;
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
printpath(tcp, tcp->u_arg[1]);
tprints(", ");
if (ignore_type)
printaddr(tcp->u_arg[2]);
else
printstr(tcp, tcp->u_arg[2]);
tprints(", ");
if (old_magic) {
print_xlat(MS_MGC_VAL);
if (flags)
tprints("|");
}
if (flags || !old_magic)
printflags64(mount_flags, flags, "MS_???");
tprints(", ");
if (ignore_data)
printaddr(tcp->u_arg[4]);
else
printstr(tcp, tcp->u_arg[4]);
return RVAL_DECODED;
}
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