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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  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 #include "defs.h"
34
35 #ifdef HAVE_SYS_SHM_H
36 # include <sys/shm.h>
37 #elif defined HAVE_LINUX_SHM_H
38 # include <linux/shm.h>
39 #endif
40
41 #include "xlat/shm_resource_flags.h"
42 #include "xlat/shm_flags.h"
43
44 SYS_FUNC(shmget)
45 {
46         const int key = (int) tcp->u_arg[0];
47         if (key)
48                 tprintf("%#x", key);
49         else
50                 tprints("IPC_PRIVATE");
51         tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
52         if (printflags(shm_resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
53                 tprints("|");
54         print_numeric_umode_t(tcp->u_arg[2] & 0777);
55         return RVAL_DECODED;
56 }
57
58 SYS_FUNC(shmat)
59 {
60         if (entering(tcp)) {
61                 tprintf("%d, ", (int) tcp->u_arg[0]);
62                 if (indirect_ipccall(tcp)) {
63                         printaddr(tcp->u_arg[3]);
64                         tprints(", ");
65                         printflags(shm_flags, tcp->u_arg[1], "SHM_???");
66                 } else {
67                         printaddr(tcp->u_arg[1]);
68                         tprints(", ");
69                         printflags(shm_flags, tcp->u_arg[2], "SHM_???");
70                 }
71                 return 0;
72         } else {
73                 if (syserror(tcp))
74                         return 0;
75                 if (indirect_ipccall(tcp)) {
76                         union {
77                                 uint64_t r64;
78                                 uint32_t r32;
79                         } u;
80                         if (umoven(tcp, tcp->u_arg[2], current_wordsize, &u) < 0)
81                                 return RVAL_NONE;
82                         tcp->u_rval = (sizeof(u.r32) == current_wordsize)
83                                       ? u.r32 : u.r64;
84                 }
85                 return RVAL_HEX;
86         }
87 }
88
89 SYS_FUNC(shmdt)
90 {
91         printaddr(tcp->u_arg[indirect_ipccall(tcp) ? 3 : 0]);
92         return RVAL_DECODED;
93 }