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) 2015-2018 The strace developers.
11 * SPDX-License-Identifier: LGPL-2.1-or-later
18 #elif defined HAVE_LINUX_SHM_H
19 # include <linux/shm.h>
22 #ifndef SHM_HUGE_SHIFT
23 # define SHM_HUGE_SHIFT 26
27 # define SHM_HUGE_MASK 0x3f
30 #include "xlat/shm_resource_flags.h"
31 #include "xlat/shm_flags.h"
35 printxval(ipc_private, (unsigned int) tcp->u_arg[0], NULL);
36 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
38 unsigned int flags = tcp->u_arg[2] & ~0777;
39 const unsigned int mask = SHM_HUGE_MASK << SHM_HUGE_SHIFT;
40 const unsigned int hugetlb_value = flags & mask;
43 if (flags || !hugetlb_value)
44 printflags(shm_resource_flags, flags, NULL);
49 hugetlb_value >> SHM_HUGE_SHIFT);
50 print_xlat_u(SHM_HUGE_SHIFT);
53 if (flags || hugetlb_value)
55 print_numeric_umode_t(tcp->u_arg[2] & 0777);
63 tprintf("%d, ", (int) tcp->u_arg[0]);
64 if (indirect_ipccall(tcp)) {
65 printaddr(tcp->u_arg[3]);
67 printflags(shm_flags, tcp->u_arg[1], "SHM_???");
69 printaddr(tcp->u_arg[1]);
71 printflags(shm_flags, tcp->u_arg[2], "SHM_???");
77 if (indirect_ipccall(tcp)) {
82 if (umoven(tcp, tcp->u_arg[2], current_wordsize, &u) < 0)
84 tcp->u_rval = (sizeof(u.r32) == current_wordsize)
93 printaddr(tcp->u_arg[indirect_ipccall(tcp) ? 3 : 0]);