1*cf84ac9aSAndroid Build Coastguard Worker /*
2*cf84ac9aSAndroid Build Coastguard Worker * Support for decoding of NS_* ioctl commands.
3*cf84ac9aSAndroid Build Coastguard Worker *
4*cf84ac9aSAndroid Build Coastguard Worker * Copyright (c) 2017 Nikolay Marchuk <[email protected]>
5*cf84ac9aSAndroid Build Coastguard Worker * Copyright (c) 2017-2018 The strace developers.
6*cf84ac9aSAndroid Build Coastguard Worker * All rights reserved.
7*cf84ac9aSAndroid Build Coastguard Worker *
8*cf84ac9aSAndroid Build Coastguard Worker * Redistribution and use in source and binary forms, with or without
9*cf84ac9aSAndroid Build Coastguard Worker * modification, are permitted provided that the following conditions
10*cf84ac9aSAndroid Build Coastguard Worker * are met:
11*cf84ac9aSAndroid Build Coastguard Worker * 1. Redistributions of source code must retain the above copyright
12*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer.
13*cf84ac9aSAndroid Build Coastguard Worker * 2. Redistributions in binary form must reproduce the above copyright
14*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer in the
15*cf84ac9aSAndroid Build Coastguard Worker * documentation and/or other materials provided with the distribution.
16*cf84ac9aSAndroid Build Coastguard Worker * 3. The name of the author may not be used to endorse or promote products
17*cf84ac9aSAndroid Build Coastguard Worker * derived from this software without specific prior written permission.
18*cf84ac9aSAndroid Build Coastguard Worker *
19*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20*cf84ac9aSAndroid Build Coastguard Worker * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21*cf84ac9aSAndroid Build Coastguard Worker * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22*cf84ac9aSAndroid Build Coastguard Worker * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23*cf84ac9aSAndroid Build Coastguard Worker * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24*cf84ac9aSAndroid Build Coastguard Worker * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25*cf84ac9aSAndroid Build Coastguard Worker * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26*cf84ac9aSAndroid Build Coastguard Worker * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27*cf84ac9aSAndroid Build Coastguard Worker * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29*cf84ac9aSAndroid Build Coastguard Worker */
30*cf84ac9aSAndroid Build Coastguard Worker
31*cf84ac9aSAndroid Build Coastguard Worker #include "defs.h"
32*cf84ac9aSAndroid Build Coastguard Worker #include "nsfs.h"
33*cf84ac9aSAndroid Build Coastguard Worker
34*cf84ac9aSAndroid Build Coastguard Worker int
nsfs_ioctl(struct tcb * tcp,unsigned int code,kernel_ulong_t arg)35*cf84ac9aSAndroid Build Coastguard Worker nsfs_ioctl(struct tcb *tcp, unsigned int code, kernel_ulong_t arg)
36*cf84ac9aSAndroid Build Coastguard Worker {
37*cf84ac9aSAndroid Build Coastguard Worker unsigned int uid;
38*cf84ac9aSAndroid Build Coastguard Worker switch (code) {
39*cf84ac9aSAndroid Build Coastguard Worker case NS_GET_USERNS:
40*cf84ac9aSAndroid Build Coastguard Worker case NS_GET_PARENT:
41*cf84ac9aSAndroid Build Coastguard Worker return RVAL_IOCTL_DECODED | RVAL_FD;
42*cf84ac9aSAndroid Build Coastguard Worker case NS_GET_NSTYPE:
43*cf84ac9aSAndroid Build Coastguard Worker if (entering(tcp))
44*cf84ac9aSAndroid Build Coastguard Worker return 0;
45*cf84ac9aSAndroid Build Coastguard Worker if (!syserror(tcp))
46*cf84ac9aSAndroid Build Coastguard Worker tcp->auxstr = xlookup(setns_types, tcp->u_rval);
47*cf84ac9aSAndroid Build Coastguard Worker return RVAL_IOCTL_DECODED | RVAL_STR;
48*cf84ac9aSAndroid Build Coastguard Worker case NS_GET_OWNER_UID:
49*cf84ac9aSAndroid Build Coastguard Worker if (entering(tcp))
50*cf84ac9aSAndroid Build Coastguard Worker return 0;
51*cf84ac9aSAndroid Build Coastguard Worker tprints(", ");
52*cf84ac9aSAndroid Build Coastguard Worker if (!umove_or_printaddr(tcp, arg, &uid)) {
53*cf84ac9aSAndroid Build Coastguard Worker printuid("[", uid);
54*cf84ac9aSAndroid Build Coastguard Worker tprints("]");
55*cf84ac9aSAndroid Build Coastguard Worker }
56*cf84ac9aSAndroid Build Coastguard Worker return RVAL_IOCTL_DECODED;
57*cf84ac9aSAndroid Build Coastguard Worker default:
58*cf84ac9aSAndroid Build Coastguard Worker return RVAL_DECODED;
59*cf84ac9aSAndroid Build Coastguard Worker }
60*cf84ac9aSAndroid Build Coastguard Worker }
61