Branch data Line data Source code
1 : : /*
2 : : * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 : : * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 : : * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
5 : : * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 : : * Copyright (c) 2002-2004 Roland McGrath <roland@redhat.com>
7 : : * Copyright (c) 2010 Andreas Schwab <schwab@linux-m68k.org>
8 : : * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
9 : : * Copyright (c) 2014-2017 The strace developers.
10 : : * All rights reserved.
11 : : *
12 : : * Redistribution and use in source and binary forms, with or without
13 : : * modification, are permitted provided that the following conditions
14 : : * are met:
15 : : * 1. Redistributions of source code must retain the above copyright
16 : : * notice, this list of conditions and the following disclaimer.
17 : : * 2. Redistributions in binary form must reproduce the above copyright
18 : : * notice, this list of conditions and the following disclaimer in the
19 : : * documentation and/or other materials provided with the distribution.
20 : : * 3. The name of the author may not be used to endorse or promote products
21 : : * derived from this software without specific prior written permission.
22 : : *
23 : : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 : : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 : : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 : : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 : : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 : : * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 : : * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 : : * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 : : * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 : : */
34 : :
35 : : #include "defs.h"
36 : :
37 : : #ifdef HAVE_STRUCT_USER_DESC
38 : :
39 : : # include <asm/ldt.h>
40 : :
41 : : void
42 : 5 : print_user_desc(struct tcb *const tcp, const kernel_ulong_t addr)
43 : : {
44 : : struct user_desc desc;
45 : :
46 [ + + ]: 5 : if (umove_or_printaddr(tcp, addr, &desc))
47 : 1 : return;
48 : :
49 : 4 : tprintf("{entry_number:%d, "
50 : : "base_addr:%#08x, "
51 : : "limit:%d, "
52 : : "seg_32bit:%d, "
53 : : "contents:%d, "
54 : : "read_exec_only:%d, "
55 : : "limit_in_pages:%d, "
56 : : "seg_not_present:%d, "
57 : : "useable:%d}",
58 : : desc.entry_number,
59 : : desc.base_addr,
60 : : desc.limit,
61 : 4 : desc.seg_32bit,
62 : 4 : desc.contents,
63 : 4 : desc.read_exec_only,
64 : 4 : desc.limit_in_pages,
65 : 4 : desc.seg_not_present,
66 : 4 : desc.useable);
67 : : }
68 : :
69 : 0 : SYS_FUNC(modify_ldt)
70 : : {
71 : 0 : tprintf("%" PRI_kld ", ", tcp->u_arg[0]);
72 [ # # ]: 0 : if (tcp->u_arg[2] != sizeof(struct user_desc))
73 : 0 : printaddr(tcp->u_arg[1]);
74 : : else
75 : 0 : print_user_desc(tcp, tcp->u_arg[1]);
76 : 0 : tprintf(", %" PRI_klu, tcp->u_arg[2]);
77 : :
78 : 0 : return RVAL_DECODED;
79 : : }
80 : :
81 : 10 : SYS_FUNC(set_thread_area)
82 : : {
83 [ + + ]: 10 : if (entering(tcp)) {
84 : 5 : print_user_desc(tcp, tcp->u_arg[0]);
85 : : } else {
86 : : struct user_desc desc;
87 : :
88 [ + + ]: 9 : if (!verbose(tcp) || syserror(tcp) ||
[ + - + - ]
89 : 4 : umove(tcp, tcp->u_arg[0], &desc) < 0) {
90 : : /* returned entry_number is not available */
91 : : } else {
92 : : static char outstr[32];
93 : :
94 : 4 : sprintf(outstr, "entry_number:%d", desc.entry_number);
95 : 4 : tcp->auxstr = outstr;
96 : 5 : return RVAL_STR;
97 : : }
98 : : }
99 : : return 0;
100 : : }
101 : :
102 : 0 : SYS_FUNC(get_thread_area)
103 : : {
104 [ # # ]: 0 : if (exiting(tcp))
105 : 0 : print_user_desc(tcp, tcp->u_arg[0]);
106 : 0 : return 0;
107 : : }
108 : :
109 : : #endif /* HAVE_STRUCT_USER_DESC */
110 : :
111 : : #if defined(M68K) || defined(MIPS)
112 : : SYS_FUNC(set_thread_area)
113 : : {
114 : : printaddr(tcp->u_arg[0]);
115 : :
116 : : return RVAL_DECODED;
117 : :
118 : : }
119 : : #endif
120 : :
121 : : #if defined(M68K)
122 : : SYS_FUNC(get_thread_area)
123 : : {
124 : : return RVAL_DECODED | RVAL_HEX;
125 : : }
126 : : #endif
|