87 lines
2.8 KiB
C
87 lines
2.8 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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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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tprints("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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