Branch data Line data Source code
1 : : /*
2 : : * Support for decoding of NS_* ioctl commands.
3 : : *
4 : : * Copyright (c) 2017 Nikolay Marchuk <marchuk.nikolay.a@gmail.com>
5 : : * All rights reserved.
6 : : *
7 : : * Redistribution and use in source and binary forms, with or without
8 : : * modification, are permitted provided that the following conditions
9 : : * are met:
10 : : * 1. Redistributions of source code must retain the above copyright
11 : : * notice, this list of conditions and the following disclaimer.
12 : : * 2. Redistributions in binary form must reproduce the above copyright
13 : : * notice, this list of conditions and the following disclaimer in the
14 : : * documentation and/or other materials provided with the distribution.
15 : : * 3. The name of the author may not be used to endorse or promote products
16 : : * derived from this software without specific prior written permission.
17 : : *
18 : : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 : : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 : : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 : : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 : : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 : : * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 : : * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 : : * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 : : * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 : : */
29 : :
30 : : #include "defs.h"
31 : : #include "nsfs.h"
32 : :
33 : : int
34 : 24 : nsfs_ioctl(struct tcb *tcp, unsigned int code, kernel_ulong_t arg)
35 : : {
36 : : unsigned int uid;
37 [ + + - + ]: 24 : switch (code) {
38 : : case NS_GET_USERNS:
39 : : case NS_GET_PARENT:
40 : : return 1 + RVAL_FD + RVAL_DECODED;
41 : : case NS_GET_NSTYPE:
42 [ + + ]: 8 : if (entering(tcp))
43 : : return 0;
44 [ - + ]: 4 : if (!syserror(tcp)) {
45 : : const char *outstr;
46 : 0 : outstr = xlookup(setns_types, tcp->u_rval);
47 [ # # ]: 0 : if (outstr) {
48 : 0 : tcp->auxstr = outstr;
49 : 0 : return 1 + RVAL_STR;
50 : : }
51 : : }
52 : : return 1;
53 : : case NS_GET_OWNER_UID:
54 [ + + ]: 8 : if (entering(tcp))
55 : : return 0;
56 : 4 : tprints(", ");
57 [ - + ]: 4 : if (!umove_or_printaddr(tcp, arg, &uid)) {
58 : 0 : printuid("[", uid);
59 : 0 : tprints("]");
60 : : }
61 : : return 1;
62 : : default:
63 : 0 : return RVAL_DECODED;
64 : : }
65 : : }
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