1d167cf6fSWarner Losh /*-
251369649SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause
351369649SPedro F. Giffuni *
4df8bae1dSRodney W. Grimes * Copyright (c) 1993 Jan-Simon Pendry
5df8bae1dSRodney W. Grimes * Copyright (c) 1993 Sean Eric Fagan
6df8bae1dSRodney W. Grimes * Copyright (c) 1993
7df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved.
8df8bae1dSRodney W. Grimes *
9df8bae1dSRodney W. Grimes * This code is derived from software contributed to Berkeley by
10df8bae1dSRodney W. Grimes * Jan-Simon Pendry and Sean Eric Fagan.
11df8bae1dSRodney W. Grimes *
12df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without
13df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions
14df8bae1dSRodney W. Grimes * are met:
15df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright
16df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer.
17df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright
18df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the
19df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution.
20fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors
21df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software
22df8bae1dSRodney W. Grimes * without specific prior written permission.
23df8bae1dSRodney W. Grimes *
24df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34df8bae1dSRodney W. Grimes * SUCH DAMAGE.
35df8bae1dSRodney W. Grimes */
36df8bae1dSRodney W. Grimes
37df8bae1dSRodney W. Grimes #include <sys/param.h>
38fb919e4dSMark Murray #include <sys/lock.h>
3923955314SAlfred Perlstein #include <sys/mutex.h>
40df8bae1dSRodney W. Grimes #include <sys/proc.h>
41fb919e4dSMark Murray #include <sys/ptrace.h>
4254a4c5bfSBruce Evans #include <sys/systm.h>
433a669c52SDag-Erling Smørgrav #include <sys/uio.h>
44fb919e4dSMark Murray
453a669c52SDag-Erling Smørgrav #include <fs/pseudofs/pseudofs.h>
4699d300a1SRuslan Ermilov #include <fs/procfs/procfs.h>
47fb919e4dSMark Murray
48df8bae1dSRodney W. Grimes /*
49df8bae1dSRodney W. Grimes * Copy data in and out of the target process.
50df8bae1dSRodney W. Grimes * We do this by mapping the process's page into
51df8bae1dSRodney W. Grimes * the kernel and then doing a uiomove direct
52df8bae1dSRodney W. Grimes * from the kernel address space.
53df8bae1dSRodney W. Grimes */
54df8bae1dSRodney W. Grimes int
procfs_doprocmem(PFS_FILL_ARGS)553a669c52SDag-Erling Smørgrav procfs_doprocmem(PFS_FILL_ARGS)
56df8bae1dSRodney W. Grimes {
57f2e6be58SRobert Watson int error;
58df8bae1dSRodney W. Grimes
59df8bae1dSRodney W. Grimes if (uio->uio_resid == 0)
60df8bae1dSRodney W. Grimes return (0);
61df8bae1dSRodney W. Grimes
62ce5aaf45SJohn Baldwin PROC_LOCK(p);
63f44d9e24SJohn Baldwin error = p_candebug(td, p);
64ce5aaf45SJohn Baldwin PROC_UNLOCK(p);
65ce5aaf45SJohn Baldwin if (error == 0)
663a669c52SDag-Erling Smørgrav error = proc_rwmem(p, uio);
6749356a1fSSean Eric Fagan
683a669c52SDag-Erling Smørgrav return (error);
69df8bae1dSRodney W. Grimes }
70