Branch data Line data Source code
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 : :
45 : 4 : SYS_FUNC(shmget)
46 : : {
47 : 4 : const int key = (int) tcp->u_arg[0];
48 [ + + ]: 4 : if (key)
49 : 2 : tprintf("%#x", key);
50 : : else
51 : 2 : tprints("IPC_PRIVATE");
52 : 4 : tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
53 [ + + ]: 4 : if (printflags(shm_resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
54 : 2 : tprints("|");
55 : 4 : print_numeric_umode_t(tcp->u_arg[2] & 0777);
56 : 4 : return RVAL_DECODED;
57 : : }
58 : :
59 : 16 : SYS_FUNC(shmat)
60 : : {
61 [ + + ]: 16 : if (entering(tcp)) {
62 : 8 : tprintf("%d, ", (int) tcp->u_arg[0]);
63 [ + + ]: 8 : if (indirect_ipccall(tcp)) {
64 : 4 : printaddr(tcp->u_arg[3]);
65 : 4 : tprints(", ");
66 : 4 : printflags(shm_flags, tcp->u_arg[1], "SHM_???");
67 : : } else {
68 : 4 : printaddr(tcp->u_arg[1]);
69 : 4 : tprints(", ");
70 : 4 : printflags(shm_flags, tcp->u_arg[2], "SHM_???");
71 : : }
72 : : return 0;
73 : : } else {
74 [ + + ]: 8 : if (syserror(tcp))
75 : : return 0;
76 [ + + ]: 4 : if (indirect_ipccall(tcp)) {
77 : : union {
78 : : uint64_t r64;
79 : : uint32_t r32;
80 : : } u;
81 [ - + ]: 2 : if (umoven(tcp, tcp->u_arg[2], current_wordsize, &u) < 0)
82 : 0 : return RVAL_NONE;
83 [ + - ]: 2 : tcp->u_rval = (sizeof(u.r32) == current_wordsize)
84 : 2 : ? u.r32 : u.r64;
85 : : }
86 : : return RVAL_HEX;
87 : : }
88 : : }
89 : :
90 : 4 : SYS_FUNC(shmdt)
91 : : {
92 [ + + ]: 4 : printaddr(tcp->u_arg[indirect_ipccall(tcp) ? 3 : 0]);
93 : 4 : return RVAL_DECODED;
94 : : }
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