/*
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* Support for decoding of NS_* ioctl commands.
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*
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* Copyright (c) 2017 Nikolay Marchuk <marchuk.nikolay.a@gmail.com>
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* Copyright (c) 2017-2018 The strace developers.
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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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#include "nsfs.h"
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int
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nsfs_ioctl(struct tcb *tcp, unsigned int code, kernel_ulong_t arg)
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{
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unsigned int uid;
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switch (code) {
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case NS_GET_USERNS:
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case NS_GET_PARENT:
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return RVAL_IOCTL_DECODED | RVAL_FD;
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case NS_GET_NSTYPE:
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if (entering(tcp))
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return 0;
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if (!syserror(tcp))
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tcp->auxstr = xlookup(setns_types, tcp->u_rval);
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return RVAL_IOCTL_DECODED | RVAL_STR;
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case NS_GET_OWNER_UID:
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if (entering(tcp))
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return 0;
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tprints(", ");
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if (!umove_or_printaddr(tcp, arg, &uid)) {
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printuid("[", uid);
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tprints("]");
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}
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return RVAL_IOCTL_DECODED;
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default:
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return RVAL_DECODED;
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}
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}
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