/* $NetBSD: sys_process.c,v 1.180 2020/05/26 00:50:53 kamil Exp $ */ /*- * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)sys_process.c 8.1 (Berkeley) 6/10/93 */ /*- * Copyright (c) 1993 Jan-Simon Pendry. * Copyright (c) 1994 Christopher G. Demetriou. All rights reserved. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)sys_process.c 8.1 (Berkeley) 6/10/93 */ /* * References: * (1) Bach's "The Design of the UNIX Operating System", * (2) sys/miscfs/procfs from UCB's 4.4BSD-Lite distribution, * (3) the "4.4BSD Programmer's Reference Manual" published * by USENIX and O'Reilly & Associates. * The 4.4BSD PRM does a reasonably good job of documenting what the various * ptrace() requests should actually do, and its text is quoted several times * in this file. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.180 2020/05/26 00:50:53 kamil Exp $"); #ifdef _KERNEL_OPT #include "opt_ptrace.h" #include "opt_ktrace.h" #include "opt_pax.h" #endif #include <sys/param.h> #include <sys/systm.h> #include <sys/proc.h> #include <sys/errno.h> #include <sys/exec.h> #include <sys/pax.h> #include <sys/ptrace.h> #include <sys/uio.h> #include <sys/ras.h> #include <sys/kmem.h> #include <sys/kauth.h> #include <sys/mount.h> #include <sys/syscallargs.h> #include <uvm/uvm_extern.h> #include <machine/reg.h> #if defined(KTRACE) || defined(PTRACE_HOOKS) int process_domem(struct lwp *curl /*tracer*/, struct lwp *l /*traced*/, struct uio *uio) { struct proc *p = l->l_proc; /* traced */ struct vmspace *vm; int error; size_t len; error = 0; len = uio->uio_resid; if (len == 0) return 0; #ifdef PMAP_NEED_PROCWR vaddr_t addr = uio->uio_offset; #endif vm = p->p_vmspace; if ((l->l_flag & LW_WEXIT) || vm->vm_refcnt < 1) error = EFAULT; if (error == 0) uvmspace_addref(p->p_vmspace); if (error != 0) return error; error = uvm_io(&vm->vm_map, uio, pax_mprotect_prot(l)); #ifdef PMAP_NEED_PROCWR if (error == 0 && uio->uio_rw == UIO_WRITE) pmap_procwr(p, addr, len); #endif uvmspace_free(vm); return error; } #endif /* KTRACE || PTRACE_HOOKS */ /* * Dummy routine so that ptrace_common module will fail to load if this * routine is not defined. */ #if defined(PTRACE_HOOKS) void ptrace_hooks(void) { } #endif
