/* $NetBSD: sys_ptrace.c,v 1.12 2022/07/10 14:07:55 riastradh 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 */ #include __KERNEL_RCSID(0, "$NetBSD: sys_ptrace.c,v 1.12 2022/07/10 14:07:55 riastradh Exp $"); #ifdef _KERNEL_OPT #include "opt_ptrace.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * PTRACE methods */ static int ptrace_copyin_piod(struct ptrace_io_desc *piod, const void *addr, size_t len) { if (len != 0 && sizeof(*piod) != len) return EINVAL; return copyin(addr, piod, sizeof(*piod)); } static int ptrace_copyout_piod(const struct ptrace_io_desc *piod, void *addr, size_t len) { if (len != 0 && sizeof(*piod) != len) return EINVAL; return copyout(piod, addr, sizeof(*piod)); } static int ptrace_copyin_siginfo(struct ptrace_siginfo *psi, const void *addr, size_t len) { if (sizeof(*psi) != len) return EINVAL; return copyin(addr, psi, sizeof(*psi)); } static int ptrace_copyout_siginfo(const struct ptrace_siginfo *psi, void *addr, size_t len) { if (sizeof(*psi) != len) return EINVAL; return copyout(psi, addr, sizeof(*psi)); } static int ptrace_copyout_lwpstatus(const struct ptrace_lwpstatus *pls, void *addr, size_t len) { return copyout(pls, addr, len); } static struct ptrace_methods native_ptm = { .ptm_copyin_piod = ptrace_copyin_piod, .ptm_copyout_piod = ptrace_copyout_piod, .ptm_copyin_siginfo = ptrace_copyin_siginfo, .ptm_copyout_siginfo = ptrace_copyout_siginfo, .ptm_copyout_lwpstatus = ptrace_copyout_lwpstatus, .ptm_doregs = process_doregs, .ptm_dofpregs = process_dofpregs, .ptm_dodbregs = process_dodbregs, }; static const struct syscall_package ptrace_syscalls[] = { { SYS_ptrace, 0, (sy_call_t *)sys_ptrace }, { 0, 0, NULL }, }; /* * Process debugging system call. */ int sys_ptrace(struct lwp *l, const struct sys_ptrace_args *uap, register_t *retval) { /* { syscallarg(int) req; syscallarg(pid_t) pid; syscallarg(void *) addr; syscallarg(int) data; } */ return do_ptrace(&native_ptm, l, SCARG(uap, req), SCARG(uap, pid), SCARG(uap, addr), SCARG(uap, data), retval); } #define DEPS "ptrace_common" MODULE(MODULE_CLASS_EXEC, ptrace, DEPS); static int ptrace_init(void) { int error; error = syscall_establish(&emul_netbsd, ptrace_syscalls); return error; } static int ptrace_fini(void) { int error; error = syscall_disestablish(&emul_netbsd, ptrace_syscalls); return error; } static int ptrace_modcmd(modcmd_t cmd, void *arg) { int error; switch (cmd) { case MODULE_CMD_INIT: error = ptrace_init(); break; case MODULE_CMD_FINI: error = ptrace_fini(); break; default: error = ENOTTY; break; } return error; }