1 /*
2 * Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com>
7 * Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
8 * Copyright (c) 2015-2017 The strace developers.
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 #ifdef HAVE_SYS_SHM_H
37 # include <sys/shm.h>
38 #elif defined HAVE_LINUX_SHM_H
39 # include <linux/shm.h>
40 #endif
41
42 #include "xlat/shm_resource_flags.h"
43 #include "xlat/shm_flags.h"
44
SYS_FUNC(shmget)45 SYS_FUNC(shmget)
46 {
47 const int key = (int) tcp->u_arg[0];
48 if (key)
49 tprintf("%#x", key);
50 else
51 tprints("IPC_PRIVATE");
52 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
53 if (printflags(shm_resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
54 tprints("|");
55 print_numeric_umode_t(tcp->u_arg[2] & 0777);
56 return RVAL_DECODED;
57 }
58
SYS_FUNC(shmat)59 SYS_FUNC(shmat)
60 {
61 if (entering(tcp)) {
62 tprintf("%d, ", (int) tcp->u_arg[0]);
63 if (indirect_ipccall(tcp)) {
64 printaddr(tcp->u_arg[3]);
65 tprints(", ");
66 printflags(shm_flags, tcp->u_arg[1], "SHM_???");
67 } else {
68 printaddr(tcp->u_arg[1]);
69 tprints(", ");
70 printflags(shm_flags, tcp->u_arg[2], "SHM_???");
71 }
72 return 0;
73 } else {
74 if (syserror(tcp))
75 return 0;
76 if (indirect_ipccall(tcp)) {
77 union {
78 uint64_t r64;
79 uint32_t r32;
80 } u;
81 if (umoven(tcp, tcp->u_arg[2], current_wordsize, &u) < 0)
82 return RVAL_NONE;
83 tcp->u_rval = (sizeof(u.r32) == current_wordsize)
84 ? u.r32 : u.r64;
85 }
86 return RVAL_HEX;
87 }
88 }
89
SYS_FUNC(shmdt)90 SYS_FUNC(shmdt)
91 {
92 printaddr(tcp->u_arg[indirect_ipccall(tcp) ? 3 : 0]);
93 return RVAL_DECODED;
94 }
95