netbsd32_ptrace.c revision 1.2.4.3
1 1.2.4.3 skrll /* $NetBSD: netbsd32_ptrace.c,v 1.2.4.3 2017/02/05 13:40:26 skrll Exp $ */ 2 1.2.4.2 skrll 3 1.2.4.2 skrll /* 4 1.2.4.2 skrll * Copyright (c) 2016 The NetBSD Foundation, Inc. 5 1.2.4.2 skrll * All rights reserved. 6 1.2.4.2 skrll * 7 1.2.4.2 skrll * This code is derived from software contributed to The NetBSD Foundation 8 1.2.4.2 skrll * by Nick Hudson 9 1.2.4.2 skrll * 10 1.2.4.2 skrll * Redistribution and use in source and binary forms, with or without 11 1.2.4.2 skrll * modification, are permitted provided that the following conditions 12 1.2.4.2 skrll * are met: 13 1.2.4.2 skrll * 1. Redistributions of source code must retain the above copyright 14 1.2.4.2 skrll * notice, this list of conditions and the following disclaimer. 15 1.2.4.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.4.2 skrll * notice, this list of conditions and the following disclaimer in the 17 1.2.4.2 skrll * documentation and/or other materials provided with the distribution. 18 1.2.4.2 skrll * 19 1.2.4.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.4.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.4.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.4.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.4.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.4.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.4.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.4.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.4.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.4.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.4.2 skrll * POSSIBILITY OF SUCH DAMAGE. 30 1.2.4.2 skrll */ 31 1.2.4.2 skrll 32 1.2.4.2 skrll #include <sys/cdefs.h> 33 1.2.4.3 skrll __KERNEL_RCSID(0, "$NetBSD: netbsd32_ptrace.c,v 1.2.4.3 2017/02/05 13:40:26 skrll Exp $"); 34 1.2.4.2 skrll 35 1.2.4.2 skrll #if defined(_KERNEL_OPT) 36 1.2.4.2 skrll #include "opt_ptrace.h" 37 1.2.4.2 skrll #include "opt_compat_netbsd.h" 38 1.2.4.2 skrll #endif 39 1.2.4.2 skrll 40 1.2.4.2 skrll #include <sys/param.h> 41 1.2.4.2 skrll #include <sys/module.h> 42 1.2.4.2 skrll #include <sys/ptrace.h> 43 1.2.4.2 skrll #include <sys/syscallvar.h> 44 1.2.4.2 skrll 45 1.2.4.2 skrll #include <compat/netbsd32/netbsd32.h> 46 1.2.4.2 skrll #include <compat/netbsd32/netbsd32_syscall.h> 47 1.2.4.2 skrll #include <compat/netbsd32/netbsd32_syscallargs.h> 48 1.2.4.2 skrll #include <compat/netbsd32/netbsd32_conv.h> 49 1.2.4.2 skrll 50 1.2.4.2 skrll extern struct emul emul_netbsd32; 51 1.2.4.2 skrll 52 1.2.4.2 skrll 53 1.2.4.2 skrll /* 54 1.2.4.2 skrll * PTRACE methods 55 1.2.4.2 skrll */ 56 1.2.4.2 skrll 57 1.2.4.2 skrll static int netbsd32_copyinpiod(struct ptrace_io_desc *, const void *); 58 1.2.4.2 skrll static void netbsd32_copyoutpiod(const struct ptrace_io_desc *, void *); 59 1.2.4.2 skrll static int netbsd32_doregs(struct lwp *, struct lwp *, struct uio *); 60 1.2.4.2 skrll static int netbsd32_dofpregs(struct lwp *, struct lwp *, struct uio *); 61 1.2.4.3 skrll static int netbsd32_dowatchpoint(struct lwp *, struct lwp *, int, 62 1.2.4.3 skrll struct ptrace_watchpoint *, void *, register_t *); 63 1.2.4.2 skrll 64 1.2.4.2 skrll 65 1.2.4.2 skrll static int 66 1.2.4.2 skrll netbsd32_copyinpiod(struct ptrace_io_desc *piod, const void *addr) 67 1.2.4.2 skrll { 68 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 69 1.2.4.2 skrll 70 1.2.4.2 skrll int error = copyin(addr, &piod32, sizeof(piod32)); 71 1.2.4.2 skrll if (error) 72 1.2.4.2 skrll return error; 73 1.2.4.2 skrll piod->piod_op = piod32.piod_op; 74 1.2.4.2 skrll piod->piod_offs = NETBSD32PTR64(piod32.piod_offs); 75 1.2.4.2 skrll piod->piod_addr = NETBSD32PTR64(piod32.piod_addr); 76 1.2.4.2 skrll piod->piod_len = (size_t)piod32.piod_len; 77 1.2.4.2 skrll 78 1.2.4.2 skrll return 0; 79 1.2.4.2 skrll } 80 1.2.4.2 skrll 81 1.2.4.2 skrll static void 82 1.2.4.2 skrll netbsd32_copyoutpiod(const struct ptrace_io_desc *piod, void *addr) 83 1.2.4.2 skrll { 84 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 85 1.2.4.2 skrll 86 1.2.4.2 skrll piod32.piod_op = piod->piod_op; 87 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_offs, piod->piod_offs); 88 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_addr, piod->piod_addr); 89 1.2.4.2 skrll piod32.piod_len = (netbsd32_size_t)piod->piod_len; 90 1.2.4.2 skrll (void) copyout(&piod32, addr, sizeof(piod32)); 91 1.2.4.2 skrll } 92 1.2.4.2 skrll 93 1.2.4.2 skrll 94 1.2.4.2 skrll static int 95 1.2.4.2 skrll netbsd32_doregs(struct lwp *curl /*tracer*/, 96 1.2.4.2 skrll struct lwp *l /*traced*/, 97 1.2.4.2 skrll struct uio *uio) 98 1.2.4.2 skrll { 99 1.2.4.2 skrll #if defined(PT_GETREGS) || defined(PT_SETREGS) 100 1.2.4.2 skrll process_reg32 r32; 101 1.2.4.2 skrll int error; 102 1.2.4.2 skrll char *kv; 103 1.2.4.2 skrll int kl; 104 1.2.4.2 skrll 105 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 106 1.2.4.2 skrll return EINVAL; 107 1.2.4.2 skrll 108 1.2.4.2 skrll kl = sizeof(r32); 109 1.2.4.2 skrll kv = (char *)&r32; 110 1.2.4.2 skrll 111 1.2.4.2 skrll kv += uio->uio_offset; 112 1.2.4.2 skrll kl -= uio->uio_offset; 113 1.2.4.2 skrll if ((size_t)kl > uio->uio_resid) 114 1.2.4.2 skrll kl = uio->uio_resid; 115 1.2.4.2 skrll error = process_read_regs32(l, &r32); 116 1.2.4.2 skrll if (error == 0) 117 1.2.4.2 skrll error = uiomove(kv, kl, uio); 118 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 119 1.2.4.2 skrll if (l->l_stat != LSSTOP) 120 1.2.4.2 skrll error = EBUSY; 121 1.2.4.2 skrll else 122 1.2.4.2 skrll error = process_write_regs32(l, &r32); 123 1.2.4.2 skrll } 124 1.2.4.2 skrll 125 1.2.4.2 skrll uio->uio_offset = 0; 126 1.2.4.2 skrll return error; 127 1.2.4.2 skrll #else 128 1.2.4.2 skrll return EINVAL; 129 1.2.4.2 skrll #endif 130 1.2.4.2 skrll } 131 1.2.4.2 skrll 132 1.2.4.2 skrll static int 133 1.2.4.2 skrll netbsd32_dofpregs(struct lwp *curl /*tracer*/, 134 1.2.4.2 skrll struct lwp *l /*traced*/, 135 1.2.4.2 skrll struct uio *uio) 136 1.2.4.2 skrll { 137 1.2.4.2 skrll #if defined(PT_GETFPREGS) || defined(PT_SETFPREGS) 138 1.2.4.2 skrll process_fpreg32 r32; 139 1.2.4.2 skrll int error; 140 1.2.4.2 skrll char *kv; 141 1.2.4.2 skrll size_t kl; 142 1.2.4.2 skrll 143 1.2.4.2 skrll KASSERT(l->l_proc->p_flag & PK_32); 144 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 145 1.2.4.2 skrll return EINVAL; 146 1.2.4.2 skrll kl = sizeof(r32); 147 1.2.4.2 skrll kv = (char *)&r32; 148 1.2.4.2 skrll 149 1.2.4.2 skrll kv += uio->uio_offset; 150 1.2.4.2 skrll kl -= uio->uio_offset; 151 1.2.4.2 skrll if (kl > uio->uio_resid) 152 1.2.4.2 skrll kl = uio->uio_resid; 153 1.2.4.2 skrll 154 1.2.4.2 skrll error = process_read_fpregs32(l, &r32, &kl); 155 1.2.4.2 skrll if (error == 0) 156 1.2.4.2 skrll error = uiomove(kv, kl, uio); 157 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 158 1.2.4.2 skrll if (l->l_stat != LSSTOP) 159 1.2.4.2 skrll error = EBUSY; 160 1.2.4.2 skrll else 161 1.2.4.2 skrll error = process_write_fpregs32(l, &r32, kl); 162 1.2.4.2 skrll } 163 1.2.4.2 skrll uio->uio_offset = 0; 164 1.2.4.2 skrll return error; 165 1.2.4.2 skrll #else 166 1.2.4.2 skrll return EINVAL; 167 1.2.4.2 skrll #endif 168 1.2.4.2 skrll } 169 1.2.4.2 skrll 170 1.2.4.3 skrll static int 171 1.2.4.3 skrll netbsd32_dowatchpoint(struct lwp *curl /*tracer*/, struct lwp *l /*traced*/, 172 1.2.4.3 skrll int write, struct ptrace_watchpoint *pw, void *addr, register_t *retval) 173 1.2.4.3 skrll { 174 1.2.4.3 skrll 175 1.2.4.3 skrll /* unimplemented */ 176 1.2.4.3 skrll 177 1.2.4.3 skrll return EINVAL; 178 1.2.4.3 skrll } 179 1.2.4.3 skrll 180 1.2.4.2 skrll static struct ptrace_methods netbsd32_ptm = { 181 1.2.4.2 skrll .ptm_copyinpiod = netbsd32_copyinpiod, 182 1.2.4.2 skrll .ptm_copyoutpiod = netbsd32_copyoutpiod, 183 1.2.4.2 skrll .ptm_doregs = netbsd32_doregs, 184 1.2.4.3 skrll .ptm_dofpregs = netbsd32_dofpregs, 185 1.2.4.3 skrll .ptm_dowatchpoint = netbsd32_dowatchpoint 186 1.2.4.2 skrll }; 187 1.2.4.2 skrll 188 1.2.4.2 skrll 189 1.2.4.2 skrll int 190 1.2.4.2 skrll netbsd32_ptrace(struct lwp *l, const struct netbsd32_ptrace_args *uap, 191 1.2.4.2 skrll register_t *retval) 192 1.2.4.2 skrll { 193 1.2.4.2 skrll /* { 194 1.2.4.2 skrll syscallarg(int) req; 195 1.2.4.2 skrll syscallarg(pid_t) pid; 196 1.2.4.2 skrll syscallarg(netbsd32_voidp *) addr; 197 1.2.4.2 skrll syscallarg(int) data; 198 1.2.4.2 skrll } */ 199 1.2.4.2 skrll 200 1.2.4.2 skrll return do_ptrace(&netbsd32_ptm, l, SCARG(uap, req), SCARG(uap, pid), 201 1.2.4.2 skrll SCARG_P32(uap, addr), SCARG(uap, data), retval); 202 1.2.4.2 skrll } 203 1.2.4.2 skrll 204 1.2.4.2 skrll static const struct syscall_package compat_ptrace_syscalls[] = { 205 1.2.4.2 skrll { NETBSD32_SYS_netbsd32_ptrace, 0, (sy_call_t *)netbsd32_ptrace }, 206 1.2.4.2 skrll { 0, 0, NULL }, 207 1.2.4.2 skrll }; 208 1.2.4.2 skrll 209 1.2.4.2 skrll #define DEPS "compat_netbsd32,ptrace_common" 210 1.2.4.2 skrll 211 1.2.4.2 skrll MODULE(MODULE_CLASS_EXEC, compat_netbsd32_ptrace, DEPS); 212 1.2.4.2 skrll 213 1.2.4.2 skrll static int 214 1.2.4.2 skrll compat_netbsd32_ptrace_modcmd(modcmd_t cmd, void *arg) 215 1.2.4.2 skrll { 216 1.2.4.2 skrll int error; 217 1.2.4.2 skrll 218 1.2.4.2 skrll switch (cmd) { 219 1.2.4.2 skrll case MODULE_CMD_INIT: 220 1.2.4.2 skrll error = syscall_establish(&emul_netbsd32, 221 1.2.4.2 skrll compat_ptrace_syscalls); 222 1.2.4.2 skrll break; 223 1.2.4.2 skrll case MODULE_CMD_FINI: 224 1.2.4.2 skrll error = syscall_disestablish(&emul_netbsd32, 225 1.2.4.2 skrll compat_ptrace_syscalls); 226 1.2.4.2 skrll break; 227 1.2.4.2 skrll default: 228 1.2.4.2 skrll error = ENOTTY; 229 1.2.4.2 skrll break; 230 1.2.4.2 skrll } 231 1.2.4.2 skrll return error; 232 1.2.4.2 skrll } 233
Indexes created Mon Sep 29 21:09:56 GMT 2025