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#include DEF_MPERS_TYPE(shmid_ds_t)
36
37#include "ipc_defs.h"
38
39#ifdef HAVE_SYS_SHM_H
40/* The C library generally exports the struct the current kernel expects. */
41# include <sys/shm.h>
42typedef struct shmid_ds shmid_ds_t;
43#elif defined HAVE_LINUX_SHM_H
44/* The linux header might provide the right struct. */
45# include <linux/shm.h>
46typedef struct shmid64_ds shmid_ds_t;
47#endif
48
49#include MPERS_DEFS
50
51#include "xlat/shmctl_flags.h"
52
53static void
54print_shmid_ds(struct tcb *tcp, const long addr, int cmd)
55{
56	/* TODO: We don't properly decode old compat ipc calls. */
57	if (cmd & IPC_64)
58		cmd &= ~IPC_64;
59	shmid_ds_t shmid_ds;
60	switch (cmd) {
61	case IPC_SET:
62	case IPC_STAT:
63		if (umove_or_printaddr(tcp, addr, &shmid_ds))
64			return;
65
66		tprints("{shm_perm={");
67		printuid("uid=", shmid_ds.shm_perm.uid);
68		printuid(", gid=", shmid_ds.shm_perm.gid);
69		tprints(", mode=");
70		tprints(sprintmode(shmid_ds.shm_perm.mode));
71
72		if (cmd != IPC_STAT) {
73			tprints("}, ...}");
74			break;
75		}
76
77		tprintf(", key=%u", (unsigned) shmid_ds.shm_perm.__key);
78		printuid(", cuid=", shmid_ds.shm_perm.cuid);
79		printuid(", cgid=", shmid_ds.shm_perm.cgid);
80		tprints("}");
81		tprintf(", shm_segsz=%u", (unsigned) shmid_ds.shm_segsz);
82		tprintf(", shm_cpid=%u", (unsigned) shmid_ds.shm_cpid);
83		tprintf(", shm_lpid=%u", (unsigned) shmid_ds.shm_lpid);
84		tprintf(", shm_nattch=%u", (unsigned) shmid_ds.shm_nattch);
85		tprintf(", shm_atime=%u", (unsigned) shmid_ds.shm_atime);
86		tprintf(", shm_dtime=%u", (unsigned) shmid_ds.shm_dtime);
87		tprintf(", shm_ctime=%u", (unsigned) shmid_ds.shm_ctime);
88		tprints("}");
89		break;
90
91	default:
92		printaddr(addr);
93		break;
94	}
95}
96
97SYS_FUNC(shmctl)
98{
99	if (entering(tcp)) {
100		tprintf("%lu, ", tcp->u_arg[0]);
101		PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???");
102		tprints(", ");
103	} else {
104		const long addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2];
105		print_shmid_ds(tcp, addr, tcp->u_arg[1]);
106	}
107	return 0;
108}
109