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 : : #include DEF_MPERS_TYPE(shmid_ds_t)
37 : :
38 : : #include "ipc_defs.h"
39 : :
40 : : #ifdef HAVE_SYS_SHM_H
41 : : /* The C library generally exports the struct the current kernel expects. */
42 : : # include <sys/shm.h>
43 : : typedef struct shmid_ds shmid_ds_t;
44 : : #elif defined HAVE_LINUX_SHM_H
45 : : /* The linux header might provide the right struct. */
46 : : # include <linux/shm.h>
47 : : typedef struct shmid64_ds shmid_ds_t;
48 : : #endif
49 : :
50 : : #include MPERS_DEFS
51 : :
52 : : #include "xlat/shmctl_flags.h"
53 : :
54 : : static void
55 : 14 : print_shmid_ds(struct tcb *const tcp, const kernel_ulong_t addr, int cmd)
56 : : {
57 : : /* TODO: We don't properly decode old compat ipc calls. */
58 [ + + ]: 14 : if (cmd & IPC_64)
59 : 7 : cmd &= ~IPC_64;
60 : : shmid_ds_t shmid_ds;
61 [ + + ]: 14 : switch (cmd) {
62 : : case IPC_SET:
63 : : case IPC_STAT:
64 [ + + ]: 6 : if (umove_or_printaddr(tcp, addr, &shmid_ds))
65 : 2 : return;
66 : :
67 : 4 : tprints("{shm_perm={");
68 : 4 : printuid("uid=", shmid_ds.shm_perm.uid);
69 : 4 : printuid(", gid=", shmid_ds.shm_perm.gid);
70 : 4 : tprints(", mode=");
71 : 4 : print_numeric_umode_t(shmid_ds.shm_perm.mode);
72 : :
73 [ + + ]: 4 : if (cmd != IPC_STAT) {
74 : 2 : tprints("}, ...}");
75 : 2 : break;
76 : : }
77 : :
78 : 2 : tprintf(", key=%u", (unsigned) shmid_ds.shm_perm.__key);
79 : 2 : printuid(", cuid=", shmid_ds.shm_perm.cuid);
80 : 2 : printuid(", cgid=", shmid_ds.shm_perm.cgid);
81 : 2 : tprints("}");
82 : 2 : tprintf(", shm_segsz=%u", (unsigned) shmid_ds.shm_segsz);
83 : 2 : tprintf(", shm_cpid=%u", (unsigned) shmid_ds.shm_cpid);
84 : 2 : tprintf(", shm_lpid=%u", (unsigned) shmid_ds.shm_lpid);
85 : 2 : tprintf(", shm_nattch=%u", (unsigned) shmid_ds.shm_nattch);
86 : 2 : tprintf(", shm_atime=%u", (unsigned) shmid_ds.shm_atime);
87 : 2 : tprintf(", shm_dtime=%u", (unsigned) shmid_ds.shm_dtime);
88 : 2 : tprintf(", shm_ctime=%u", (unsigned) shmid_ds.shm_ctime);
89 : 2 : tprints("}");
90 : 2 : break;
91 : :
92 : : default:
93 : 8 : printaddr(addr);
94 : 12 : break;
95 : : }
96 : : }
97 : :
98 : 28 : SYS_FUNC(shmctl)
99 : : {
100 [ + + ]: 28 : if (entering(tcp)) {
101 : 14 : tprintf("%d, ", (int) tcp->u_arg[0]);
102 [ + + ]: 14 : PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???");
103 : 14 : tprints(", ");
104 : : } else {
105 [ + + ]: 14 : const kernel_ulong_t addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2];
106 : 14 : print_shmid_ds(tcp, addr, tcp->u_arg[1]);
107 : : }
108 : 28 : return 0;
109 : : }
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