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 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include "defs.h"
35
36 #if defined I386 || defined X86_64 || defined X32
37
38 # include <asm/ldt.h>
39
40 void
print_user_desc(struct tcb * tcp,const long addr)41 print_user_desc(struct tcb *tcp, const long addr)
42 {
43 struct user_desc desc;
44
45 if (umove_or_printaddr(tcp, addr, &desc))
46 return;
47
48 tprintf("{entry_number:%d, "
49 "base_addr:%#08x, "
50 "limit:%d, "
51 "seg_32bit:%d, "
52 "contents:%d, "
53 "read_exec_only:%d, "
54 "limit_in_pages:%d, "
55 "seg_not_present:%d, "
56 "useable:%d}",
57 desc.entry_number,
58 desc.base_addr,
59 desc.limit,
60 desc.seg_32bit,
61 desc.contents,
62 desc.read_exec_only,
63 desc.limit_in_pages,
64 desc.seg_not_present,
65 desc.useable);
66 }
67
SYS_FUNC(modify_ldt)68 SYS_FUNC(modify_ldt)
69 {
70 tprintf("%ld, ", tcp->u_arg[0]);
71 if (tcp->u_arg[2] != sizeof(struct user_desc))
72 printaddr(tcp->u_arg[1]);
73 else
74 print_user_desc(tcp, tcp->u_arg[1]);
75 tprintf(", %lu", tcp->u_arg[2]);
76
77 return RVAL_DECODED;
78 }
79
SYS_FUNC(set_thread_area)80 SYS_FUNC(set_thread_area)
81 {
82 if (entering(tcp)) {
83 print_user_desc(tcp, tcp->u_arg[0]);
84 } else {
85 struct user_desc desc;
86
87 if (!verbose(tcp) || syserror(tcp) ||
88 umove(tcp, tcp->u_arg[0], &desc) < 0) {
89 /* returned entry_number is not available */
90 } else {
91 static char outstr[32];
92
93 sprintf(outstr, "entry_number:%d", desc.entry_number);
94 tcp->auxstr = outstr;
95 return RVAL_STR;
96 }
97 }
98 return 0;
99 }
100
SYS_FUNC(get_thread_area)101 SYS_FUNC(get_thread_area)
102 {
103 if (exiting(tcp))
104 print_user_desc(tcp, tcp->u_arg[0]);
105 return 0;
106 }
107
108 #endif /* I386 || X86_64 || X32 */
109
110 #if defined(M68K) || defined(MIPS)
SYS_FUNC(set_thread_area)111 SYS_FUNC(set_thread_area)
112 {
113 printaddr(tcp->u_arg[0]);
114
115 return RVAL_DECODED;
116
117 }
118 #endif
119
120 #if defined(M68K)
SYS_FUNC(get_thread_area)121 SYS_FUNC(get_thread_area)
122 {
123 return RVAL_DECODED | RVAL_HEX;
124 }
125 #endif
126