sys_ptrace.c revision 1.2.2.2
1 1.2.2.2 pgoyette /* $NetBSD: sys_ptrace.c,v 1.2.2.2 2016/11/04 14:49:17 pgoyette Exp $ */ 2 1.2.2.2 pgoyette 3 1.2.2.2 pgoyette /*- 4 1.2.2.2 pgoyette * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc. 5 1.2.2.2 pgoyette * All rights reserved. 6 1.2.2.2 pgoyette * 7 1.2.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 pgoyette * by Andrew Doran. 9 1.2.2.2 pgoyette * 10 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.2.2.2 pgoyette * are met: 13 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.2.2.2 pgoyette * 19 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.2.2.2 pgoyette */ 31 1.2.2.2 pgoyette 32 1.2.2.2 pgoyette /*- 33 1.2.2.2 pgoyette * Copyright (c) 1982, 1986, 1989, 1993 34 1.2.2.2 pgoyette * The Regents of the University of California. All rights reserved. 35 1.2.2.2 pgoyette * (c) UNIX System Laboratories, Inc. 36 1.2.2.2 pgoyette * All or some portions of this file are derived from material licensed 37 1.2.2.2 pgoyette * to the University of California by American Telephone and Telegraph 38 1.2.2.2 pgoyette * Co. or Unix System Laboratories, Inc. and are reproduced herein with 39 1.2.2.2 pgoyette * the permission of UNIX System Laboratories, Inc. 40 1.2.2.2 pgoyette * 41 1.2.2.2 pgoyette * This code is derived from software contributed to Berkeley by 42 1.2.2.2 pgoyette * Jan-Simon Pendry. 43 1.2.2.2 pgoyette * 44 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 45 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 46 1.2.2.2 pgoyette * are met: 47 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 48 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 49 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 50 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 51 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 52 1.2.2.2 pgoyette * 3. Neither the name of the University nor the names of its contributors 53 1.2.2.2 pgoyette * may be used to endorse or promote products derived from this software 54 1.2.2.2 pgoyette * without specific prior written permission. 55 1.2.2.2 pgoyette * 56 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 57 1.2.2.2 pgoyette * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 58 1.2.2.2 pgoyette * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 59 1.2.2.2 pgoyette * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 60 1.2.2.2 pgoyette * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 61 1.2.2.2 pgoyette * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 62 1.2.2.2 pgoyette * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 63 1.2.2.2 pgoyette * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 64 1.2.2.2 pgoyette * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 65 1.2.2.2 pgoyette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 66 1.2.2.2 pgoyette * SUCH DAMAGE. 67 1.2.2.2 pgoyette * 68 1.2.2.2 pgoyette * from: @(#)sys_process.c 8.1 (Berkeley) 6/10/93 69 1.2.2.2 pgoyette */ 70 1.2.2.2 pgoyette 71 1.2.2.2 pgoyette /*- 72 1.2.2.2 pgoyette * Copyright (c) 1993 Jan-Simon Pendry. 73 1.2.2.2 pgoyette * Copyright (c) 1994 Christopher G. Demetriou. All rights reserved. 74 1.2.2.2 pgoyette * 75 1.2.2.2 pgoyette * This code is derived from software contributed to Berkeley by 76 1.2.2.2 pgoyette * Jan-Simon Pendry. 77 1.2.2.2 pgoyette * 78 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 79 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 80 1.2.2.2 pgoyette * are met: 81 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 82 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 83 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 84 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 85 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 86 1.2.2.2 pgoyette * 3. All advertising materials mentioning features or use of this software 87 1.2.2.2 pgoyette * must display the following acknowledgement: 88 1.2.2.2 pgoyette * This product includes software developed by the University of 89 1.2.2.2 pgoyette * California, Berkeley and its contributors. 90 1.2.2.2 pgoyette * 4. Neither the name of the University nor the names of its contributors 91 1.2.2.2 pgoyette * may be used to endorse or promote products derived from this software 92 1.2.2.2 pgoyette * without specific prior written permission. 93 1.2.2.2 pgoyette * 94 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 95 1.2.2.2 pgoyette * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 1.2.2.2 pgoyette * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 97 1.2.2.2 pgoyette * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 98 1.2.2.2 pgoyette * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 99 1.2.2.2 pgoyette * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 100 1.2.2.2 pgoyette * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 101 1.2.2.2 pgoyette * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 102 1.2.2.2 pgoyette * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 103 1.2.2.2 pgoyette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 104 1.2.2.2 pgoyette * SUCH DAMAGE. 105 1.2.2.2 pgoyette * 106 1.2.2.2 pgoyette * from: @(#)sys_process.c 8.1 (Berkeley) 6/10/93 107 1.2.2.2 pgoyette */ 108 1.2.2.2 pgoyette 109 1.2.2.2 pgoyette /* 110 1.2.2.2 pgoyette * References: 111 1.2.2.2 pgoyette * (1) Bach's "The Design of the UNIX Operating System", 112 1.2.2.2 pgoyette * (2) sys/miscfs/procfs from UCB's 4.4BSD-Lite distribution, 113 1.2.2.2 pgoyette * (3) the "4.4BSD Programmer's Reference Manual" published 114 1.2.2.2 pgoyette * by USENIX and O'Reilly & Associates. 115 1.2.2.2 pgoyette * The 4.4BSD PRM does a reasonably good job of documenting what the various 116 1.2.2.2 pgoyette * ptrace() requests should actually do, and its text is quoted several times 117 1.2.2.2 pgoyette * in this file. 118 1.2.2.2 pgoyette */ 119 1.2.2.2 pgoyette 120 1.2.2.2 pgoyette #include <sys/cdefs.h> 121 1.2.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: sys_ptrace.c,v 1.2.2.2 2016/11/04 14:49:17 pgoyette Exp $"); 122 1.2.2.2 pgoyette 123 1.2.2.2 pgoyette #ifdef _KERNEL_OPT 124 1.2.2.2 pgoyette #include "opt_ptrace.h" 125 1.2.2.2 pgoyette #endif 126 1.2.2.2 pgoyette 127 1.2.2.2 pgoyette #include <sys/param.h> 128 1.2.2.2 pgoyette #include <sys/systm.h> 129 1.2.2.2 pgoyette #include <sys/proc.h> 130 1.2.2.2 pgoyette #include <sys/errno.h> 131 1.2.2.2 pgoyette #include <sys/exec.h> 132 1.2.2.2 pgoyette #include <sys/pax.h> 133 1.2.2.2 pgoyette #include <sys/ptrace.h> 134 1.2.2.2 pgoyette #include <sys/uio.h> 135 1.2.2.2 pgoyette #include <sys/ras.h> 136 1.2.2.2 pgoyette #include <sys/kmem.h> 137 1.2.2.2 pgoyette #include <sys/kauth.h> 138 1.2.2.2 pgoyette #include <sys/mount.h> 139 1.2.2.2 pgoyette #include <sys/syscallargs.h> 140 1.2.2.2 pgoyette #include <sys/syscallvar.h> 141 1.2.2.2 pgoyette #include <sys/syscall.h> 142 1.2.2.2 pgoyette #include <sys/module.h> 143 1.2.2.2 pgoyette 144 1.2.2.2 pgoyette #include <uvm/uvm_extern.h> 145 1.2.2.2 pgoyette 146 1.2.2.2 pgoyette #include <machine/reg.h> 147 1.2.2.2 pgoyette 148 1.2.2.2 pgoyette /* 149 1.2.2.2 pgoyette * PTRACE methods 150 1.2.2.2 pgoyette */ 151 1.2.2.2 pgoyette 152 1.2.2.2 pgoyette static int ptrace_copyinpiod(struct ptrace_io_desc *, const void *); 153 1.2.2.2 pgoyette static void ptrace_copyoutpiod(const struct ptrace_io_desc *, void *); 154 1.2.2.2 pgoyette 155 1.2.2.2 pgoyette static int 156 1.2.2.2 pgoyette ptrace_copyinpiod(struct ptrace_io_desc *piod, const void *addr) 157 1.2.2.2 pgoyette { 158 1.2.2.2 pgoyette return copyin(addr, piod, sizeof(*piod)); 159 1.2.2.2 pgoyette } 160 1.2.2.2 pgoyette 161 1.2.2.2 pgoyette static void 162 1.2.2.2 pgoyette ptrace_copyoutpiod(const struct ptrace_io_desc *piod, void *addr) 163 1.2.2.2 pgoyette { 164 1.2.2.2 pgoyette (void) copyout(piod, addr, sizeof(*piod)); 165 1.2.2.2 pgoyette } 166 1.2.2.2 pgoyette 167 1.2.2.2 pgoyette static struct ptrace_methods native_ptm = { 168 1.2.2.2 pgoyette .ptm_copyinpiod = ptrace_copyinpiod, 169 1.2.2.2 pgoyette .ptm_copyoutpiod = ptrace_copyoutpiod, 170 1.2.2.2 pgoyette .ptm_doregs = process_doregs, 171 1.2.2.2 pgoyette .ptm_dofpregs = process_dofpregs, 172 1.2.2.2 pgoyette }; 173 1.2.2.2 pgoyette 174 1.2.2.2 pgoyette static const struct syscall_package ptrace_syscalls[] = { 175 1.2.2.2 pgoyette { SYS_ptrace, 0, (sy_call_t *)sys_ptrace }, 176 1.2.2.2 pgoyette { 0, 0, NULL }, 177 1.2.2.2 pgoyette }; 178 1.2.2.2 pgoyette 179 1.2.2.2 pgoyette /* 180 1.2.2.2 pgoyette * Process debugging system call. 181 1.2.2.2 pgoyette */ 182 1.2.2.2 pgoyette int 183 1.2.2.2 pgoyette sys_ptrace(struct lwp *l, const struct sys_ptrace_args *uap, register_t *retval) 184 1.2.2.2 pgoyette { 185 1.2.2.2 pgoyette /* { 186 1.2.2.2 pgoyette syscallarg(int) req; 187 1.2.2.2 pgoyette syscallarg(pid_t) pid; 188 1.2.2.2 pgoyette syscallarg(void *) addr; 189 1.2.2.2 pgoyette syscallarg(int) data; 190 1.2.2.2 pgoyette } */ 191 1.2.2.2 pgoyette 192 1.2.2.2 pgoyette return do_ptrace(&native_ptm, l, SCARG(uap, req), SCARG(uap, pid), 193 1.2.2.2 pgoyette SCARG(uap, addr), SCARG(uap, data), retval); 194 1.2.2.2 pgoyette } 195 1.2.2.2 pgoyette 196 1.2.2.2 pgoyette #define DEPS "ptrace_common" 197 1.2.2.2 pgoyette 198 1.2.2.2 pgoyette MODULE(MODULE_CLASS_EXEC, ptrace, DEPS); 199 1.2.2.2 pgoyette 200 1.2.2.2 pgoyette static int 201 1.2.2.2 pgoyette ptrace_modcmd(modcmd_t cmd, void *arg) 202 1.2.2.2 pgoyette { 203 1.2.2.2 pgoyette int error; 204 1.2.2.2 pgoyette 205 1.2.2.2 pgoyette switch (cmd) { 206 1.2.2.2 pgoyette case MODULE_CMD_INIT: 207 1.2.2.2 pgoyette error = syscall_establish(&emul_netbsd, ptrace_syscalls); 208 1.2.2.2 pgoyette break; 209 1.2.2.2 pgoyette case MODULE_CMD_FINI: 210 1.2.2.2 pgoyette error = syscall_disestablish(&emul_netbsd, ptrace_syscalls); 211 1.2.2.2 pgoyette break; 212 1.2.2.2 pgoyette default: 213 1.2.2.2 pgoyette error = ENOTTY; 214 1.2.2.2 pgoyette break; 215 1.2.2.2 pgoyette } 216 1.2.2.2 pgoyette return error; 217 1.2.2.2 pgoyette } 218
Indexes created Tue Sep 30 11:09:46 GMT 2025