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 const int key = (int) tcp->u_arg[0];
48 if (key)
49 tprintf("%#x", key);
50 else
51 tprints("IPC_PRIVATE");
52 tprints(", ");
53 if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0)
54 tprints("|");
55 print_numeric_umode_t(tcp->u_arg[1] & 0777);
56 return RVAL_DECODED;
57 }
58
59 static void
tprint_msgsnd(struct tcb * const tcp,const kernel_ulong_t addr,const kernel_ulong_t count,const unsigned int flags)60 tprint_msgsnd(struct tcb *const tcp, const kernel_ulong_t addr,
61 const kernel_ulong_t count, const unsigned int flags)
62 {
63 tprint_msgbuf(tcp, addr, count);
64 printflags(ipc_msg_flags, flags, "MSG_???");
65 }
66
SYS_FUNC(msgsnd)67 SYS_FUNC(msgsnd)
68 {
69 tprintf("%d, ", (int) tcp->u_arg[0]);
70 if (indirect_ipccall(tcp)) {
71 tprint_msgsnd(tcp, tcp->u_arg[3], tcp->u_arg[1],
72 tcp->u_arg[2]);
73 } else {
74 tprint_msgsnd(tcp, tcp->u_arg[1], tcp->u_arg[2],
75 tcp->u_arg[3]);
76 }
77 return RVAL_DECODED;
78 }
79
80 static void
tprint_msgrcv(struct tcb * const tcp,const kernel_ulong_t addr,const kernel_ulong_t count,const kernel_ulong_t msgtyp)81 tprint_msgrcv(struct tcb *const tcp, const kernel_ulong_t addr,
82 const kernel_ulong_t count, const kernel_ulong_t msgtyp)
83 {
84 tprint_msgbuf(tcp, addr, count);
85 tprintf("%" PRI_kld ", ", msgtyp);
86 }
87
88 static int
fetch_msgrcv_args(struct tcb * const tcp,const kernel_ulong_t addr,kernel_ulong_t * const pair)89 fetch_msgrcv_args(struct tcb *const tcp, const kernel_ulong_t addr,
90 kernel_ulong_t *const pair)
91 {
92 if (current_wordsize == sizeof(*pair)) {
93 if (umoven_or_printaddr(tcp, addr, 2 * sizeof(*pair), pair))
94 return -1;
95 } else {
96 unsigned int tmp[2];
97
98 if (umove_or_printaddr(tcp, addr, &tmp))
99 return -1;
100 pair[0] = tmp[0];
101 pair[1] = tmp[1];
102 }
103 return 0;
104 }
105
SYS_FUNC(msgrcv)106 SYS_FUNC(msgrcv)
107 {
108 if (entering(tcp)) {
109 tprintf("%d, ", (int) tcp->u_arg[0]);
110 } else {
111 if (indirect_ipccall(tcp)) {
112 const bool direct =
113 #ifdef SPARC64
114 current_wordsize == 8 ||
115 #endif
116 get_tcb_priv_ulong(tcp) != 0;
117 if (direct) {
118 tprint_msgrcv(tcp, tcp->u_arg[3],
119 tcp->u_arg[1], tcp->u_arg[4]);
120 } else {
121 kernel_ulong_t pair[2];
122
123 if (fetch_msgrcv_args(tcp, tcp->u_arg[3], pair))
124 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
125 else
126 tprint_msgrcv(tcp, pair[0],
127 tcp->u_arg[1], pair[1]);
128 }
129 printflags(ipc_msg_flags, tcp->u_arg[2], "MSG_???");
130 } else {
131 tprint_msgrcv(tcp, tcp->u_arg[1],
132 tcp->u_arg[2], tcp->u_arg[3]);
133 printflags(ipc_msg_flags, tcp->u_arg[4], "MSG_???");
134 }
135 }
136 return 0;
137 }
138