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_SEM_H
37 # include <sys/sem.h>
38 #elif defined HAVE_LINUX_SEM_H
39 # include <linux/sem.h>
40 #endif
41
42 #include "xlat/semctl_flags.h"
43 #include "xlat/semop_flags.h"
44
45 #if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
46 static bool
print_sembuf(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)47 print_sembuf(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
48 {
49 const struct sembuf *sb = elem_buf;
50
51 tprintf("{%u, %d, ", sb->sem_num, sb->sem_op);
52 printflags(semop_flags, (unsigned short) sb->sem_flg, "SEM_???");
53 tprints("}");
54
55 return true;
56 }
57 #endif
58
59 static void
tprint_sembuf_array(struct tcb * const tcp,const kernel_ulong_t addr,const unsigned int count)60 tprint_sembuf_array(struct tcb *const tcp, const kernel_ulong_t addr,
61 const unsigned int count)
62 {
63 #if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
64 struct sembuf sb;
65 print_array(tcp, addr, count, &sb, sizeof(sb),
66 umoven_or_printaddr, print_sembuf, 0);
67 #else
68 printaddr(addr);
69 #endif
70 tprintf(", %u", count);
71 }
72
SYS_FUNC(semop)73 SYS_FUNC(semop)
74 {
75 tprintf("%d, ", (int) tcp->u_arg[0]);
76 if (indirect_ipccall(tcp)) {
77 tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
78 } else {
79 tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
80 }
81 return RVAL_DECODED;
82 }
83
SYS_FUNC(semtimedop)84 SYS_FUNC(semtimedop)
85 {
86 tprintf("%d, ", (int) tcp->u_arg[0]);
87 if (indirect_ipccall(tcp)) {
88 tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
89 tprints(", ");
90 #if defined(S390) || defined(S390X)
91 print_timespec(tcp, tcp->u_arg[2]);
92 #else
93 print_timespec(tcp, tcp->u_arg[4]);
94 #endif
95 } else {
96 tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
97 tprints(", ");
98 print_timespec(tcp, tcp->u_arg[3]);
99 }
100 return RVAL_DECODED;
101 }
102
SYS_FUNC(semget)103 SYS_FUNC(semget)
104 {
105 const int key = (int) tcp->u_arg[0];
106 if (key)
107 tprintf("%#x", key);
108 else
109 tprints("IPC_PRIVATE");
110 tprintf(", %d, ", (int) tcp->u_arg[1]);
111 if (printflags(resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
112 tprints("|");
113 print_numeric_umode_t(tcp->u_arg[2] & 0777);
114 return RVAL_DECODED;
115 }
116
SYS_FUNC(semctl)117 SYS_FUNC(semctl)
118 {
119 tprintf("%d, %d, ", (int) tcp->u_arg[0], (int) tcp->u_arg[1]);
120 PRINTCTL(semctl_flags, tcp->u_arg[2], "SEM_???");
121 tprints(", ");
122 if (indirect_ipccall(tcp)
123 #ifdef SPARC64
124 && current_personality != 0
125 #endif
126 ) {
127 printnum_ptr(tcp, tcp->u_arg[3]);
128 } else {
129 printaddr(tcp->u_arg[3]);
130 }
131 return RVAL_DECODED;
132 }
133