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 #include "ipc_defs.h"
35
36 #ifdef HAVE_SYS_MSG_H
37 # include <sys/msg.h>
38 #elif defined HAVE_LINUX_MSG_H
39 # include <linux/msg.h>
40 #endif
41
42 #include "xlat/ipc_msg_flags.h"
43 #include "xlat/resource_flags.h"
44
SYS_FUNC(msgget)45 SYS_FUNC(msgget)
46 {
47 if (tcp->u_arg[0])
48 tprintf("%#lx, ", tcp->u_arg[0]);
49 else
50 tprints("IPC_PRIVATE, ");
51 if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0)
52 tprints("|");
53 tprintf("%#lo", tcp->u_arg[1] & 0777);
54 return RVAL_DECODED;
55 }
56
57 static void
tprint_msgsnd(struct tcb * tcp,const long addr,const unsigned long count,const unsigned long flags)58 tprint_msgsnd(struct tcb *tcp, const long addr, const unsigned long count,
59 const unsigned long flags)
60 {
61 tprint_msgbuf(tcp, addr, count);
62 printflags(ipc_msg_flags, flags, "MSG_???");
63 }
64
SYS_FUNC(msgsnd)65 SYS_FUNC(msgsnd)
66 {
67 tprintf("%d, ", (int) tcp->u_arg[0]);
68 if (indirect_ipccall(tcp)) {
69 tprint_msgsnd(tcp, tcp->u_arg[3], tcp->u_arg[1],
70 tcp->u_arg[2]);
71 } else {
72 tprint_msgsnd(tcp, tcp->u_arg[1], tcp->u_arg[2],
73 tcp->u_arg[3]);
74 }
75 return RVAL_DECODED;
76 }
77
78 static void
tprint_msgrcv(struct tcb * tcp,const long addr,const unsigned long count,const long msgtyp)79 tprint_msgrcv(struct tcb *tcp, const long addr, const unsigned long count,
80 const long msgtyp)
81 {
82 tprint_msgbuf(tcp, addr, count);
83 tprintf("%ld, ", msgtyp);
84 }
85
86 static int
fetch_msgrcv_args(struct tcb * tcp,const long addr,long * pair)87 fetch_msgrcv_args(struct tcb *tcp, const long addr, long *pair)
88 {
89 if (current_wordsize == sizeof(long)) {
90 if (umoven_or_printaddr(tcp, addr, 2 * sizeof(long), pair))
91 return -1;
92 } else {
93 unsigned int tmp[2];
94
95 if (umove_or_printaddr(tcp, addr, &tmp))
96 return -1;
97 pair[0] = tmp[0];
98 pair[1] = tmp[1];
99 }
100 return 0;
101 }
102
SYS_FUNC(msgrcv)103 SYS_FUNC(msgrcv)
104 {
105 if (entering(tcp)) {
106 tprintf("%d, ", (int) tcp->u_arg[0]);
107 } else {
108 if (indirect_ipccall(tcp)) {
109 long pair[2];
110
111 if (fetch_msgrcv_args(tcp, tcp->u_arg[3], pair))
112 tprintf(", %lu, ", tcp->u_arg[1]);
113 else
114 tprint_msgrcv(tcp, pair[0], tcp->u_arg[1], pair[1]);
115 printflags(ipc_msg_flags, tcp->u_arg[2], "MSG_???");
116 } else {
117 tprint_msgrcv(tcp, tcp->u_arg[1],
118 tcp->u_arg[2], tcp->u_arg[3]);
119 printflags(ipc_msg_flags, tcp->u_arg[4], "MSG_???");
120 }
121 }
122 return 0;
123 }
124