16ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin/* 26ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> 36ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> 46ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> 56ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> 66ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation 76ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Linux for s390 port by D.J. Barrow 86ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com> 939bac055674d23770b9a724221b728e443196ea7Elliott Hughes * Copyright (c) 1999-2017 The strace developers. 106ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * All rights reserved. 116ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * 126ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * Redistribution and use in source and binary forms, with or without 136ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * modification, are permitted provided that the following conditions 146ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * are met: 156ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * 1. Redistributions of source code must retain the above copyright 166ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * notice, this list of conditions and the following disclaimer. 176ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * 2. Redistributions in binary form must reproduce the above copyright 186ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * notice, this list of conditions and the following disclaimer in the 196ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * documentation and/or other materials provided with the distribution. 206ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * 3. The name of the author may not be used to endorse or promote products 216ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * derived from this software without specific prior written permission. 226ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * 236ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 246ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 256ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 266ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 276ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 286ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 296ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 306ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 316ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 326ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 336ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin */ 346ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin 356ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin#include "defs.h" 366ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin#include "ptrace.h" 376ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin 386ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levinint 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesupeek(int pid, unsigned long off, kernel_ulong_t *res) 406ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin{ 416ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin long val; 426ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin 436ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin errno = 0; 4482ffa78acd7ce9b593b5bbb3e89a519a1edff297Dmitry V. Levin val = ptrace(PTRACE_PEEKUSER, (pid_t) pid, (void *) off, 0); 456ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin if (val == -1 && errno) { 466ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin if (errno != ESRCH) { 476ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin perror_msg("upeek: PTRACE_PEEKUSER pid:%d @0x%lx)", pid, off); 486ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin } 496ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin return -1; 506ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin } 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes *res = (unsigned long) val; 526ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin return 0; 536ca4c92c1bc252fcfacdbcbfa5ebf0bc96b6d692Dmitry V. Levin} 54