netbsd32_ptrace.c revision 1.2.4.4
1 1.2.4.4 skrll /* $NetBSD: netbsd32_ptrace.c,v 1.2.4.4 2017/08/28 17:51:59 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 1.2.4.4 skrll __KERNEL_RCSID(0, "$NetBSD: netbsd32_ptrace.c,v 1.2.4.4 2017/08/28 17:51:59 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 1.2.4.4 skrll static int netbsd32_dodbregs(struct lwp *, struct lwp *, struct uio *); 62 1.2.4.2 skrll 63 1.2.4.2 skrll 64 1.2.4.2 skrll static int 65 1.2.4.2 skrll netbsd32_copyinpiod(struct ptrace_io_desc *piod, const void *addr) 66 1.2.4.2 skrll { 67 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 68 1.2.4.2 skrll 69 1.2.4.2 skrll int error = copyin(addr, &piod32, sizeof(piod32)); 70 1.2.4.2 skrll if (error) 71 1.2.4.2 skrll return error; 72 1.2.4.2 skrll piod->piod_op = piod32.piod_op; 73 1.2.4.2 skrll piod->piod_offs = NETBSD32PTR64(piod32.piod_offs); 74 1.2.4.2 skrll piod->piod_addr = NETBSD32PTR64(piod32.piod_addr); 75 1.2.4.2 skrll piod->piod_len = (size_t)piod32.piod_len; 76 1.2.4.2 skrll 77 1.2.4.2 skrll return 0; 78 1.2.4.2 skrll } 79 1.2.4.2 skrll 80 1.2.4.2 skrll static void 81 1.2.4.2 skrll netbsd32_copyoutpiod(const struct ptrace_io_desc *piod, void *addr) 82 1.2.4.2 skrll { 83 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 84 1.2.4.2 skrll 85 1.2.4.2 skrll piod32.piod_op = piod->piod_op; 86 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_offs, piod->piod_offs); 87 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_addr, piod->piod_addr); 88 1.2.4.2 skrll piod32.piod_len = (netbsd32_size_t)piod->piod_len; 89 1.2.4.2 skrll (void) copyout(&piod32, addr, sizeof(piod32)); 90 1.2.4.2 skrll } 91 1.2.4.2 skrll 92 1.2.4.2 skrll 93 1.2.4.2 skrll static int 94 1.2.4.2 skrll netbsd32_doregs(struct lwp *curl /*tracer*/, 95 1.2.4.2 skrll struct lwp *l /*traced*/, 96 1.2.4.2 skrll struct uio *uio) 97 1.2.4.2 skrll { 98 1.2.4.2 skrll #if defined(PT_GETREGS) || defined(PT_SETREGS) 99 1.2.4.2 skrll process_reg32 r32; 100 1.2.4.2 skrll int error; 101 1.2.4.2 skrll char *kv; 102 1.2.4.2 skrll int kl; 103 1.2.4.2 skrll 104 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 105 1.2.4.2 skrll return EINVAL; 106 1.2.4.2 skrll 107 1.2.4.2 skrll kl = sizeof(r32); 108 1.2.4.2 skrll kv = (char *)&r32; 109 1.2.4.2 skrll 110 1.2.4.2 skrll kv += uio->uio_offset; 111 1.2.4.2 skrll kl -= uio->uio_offset; 112 1.2.4.2 skrll if ((size_t)kl > uio->uio_resid) 113 1.2.4.2 skrll kl = uio->uio_resid; 114 1.2.4.2 skrll error = process_read_regs32(l, &r32); 115 1.2.4.2 skrll if (error == 0) 116 1.2.4.2 skrll error = uiomove(kv, kl, uio); 117 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 118 1.2.4.2 skrll if (l->l_stat != LSSTOP) 119 1.2.4.2 skrll error = EBUSY; 120 1.2.4.2 skrll else 121 1.2.4.2 skrll error = process_write_regs32(l, &r32); 122 1.2.4.2 skrll } 123 1.2.4.2 skrll 124 1.2.4.2 skrll uio->uio_offset = 0; 125 1.2.4.2 skrll return error; 126 1.2.4.2 skrll #else 127 1.2.4.2 skrll return EINVAL; 128 1.2.4.2 skrll #endif 129 1.2.4.2 skrll } 130 1.2.4.2 skrll 131 1.2.4.2 skrll static int 132 1.2.4.2 skrll netbsd32_dofpregs(struct lwp *curl /*tracer*/, 133 1.2.4.2 skrll struct lwp *l /*traced*/, 134 1.2.4.2 skrll struct uio *uio) 135 1.2.4.2 skrll { 136 1.2.4.2 skrll #if defined(PT_GETFPREGS) || defined(PT_SETFPREGS) 137 1.2.4.2 skrll process_fpreg32 r32; 138 1.2.4.2 skrll int error; 139 1.2.4.2 skrll char *kv; 140 1.2.4.2 skrll size_t kl; 141 1.2.4.2 skrll 142 1.2.4.2 skrll KASSERT(l->l_proc->p_flag & PK_32); 143 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 144 1.2.4.2 skrll return EINVAL; 145 1.2.4.2 skrll kl = sizeof(r32); 146 1.2.4.2 skrll kv = (char *)&r32; 147 1.2.4.2 skrll 148 1.2.4.2 skrll kv += uio->uio_offset; 149 1.2.4.2 skrll kl -= uio->uio_offset; 150 1.2.4.2 skrll if (kl > uio->uio_resid) 151 1.2.4.2 skrll kl = uio->uio_resid; 152 1.2.4.2 skrll 153 1.2.4.2 skrll error = process_read_fpregs32(l, &r32, &kl); 154 1.2.4.2 skrll if (error == 0) 155 1.2.4.2 skrll error = uiomove(kv, kl, uio); 156 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 157 1.2.4.2 skrll if (l->l_stat != LSSTOP) 158 1.2.4.2 skrll error = EBUSY; 159 1.2.4.2 skrll else 160 1.2.4.2 skrll error = process_write_fpregs32(l, &r32, kl); 161 1.2.4.2 skrll } 162 1.2.4.2 skrll uio->uio_offset = 0; 163 1.2.4.2 skrll return error; 164 1.2.4.2 skrll #else 165 1.2.4.2 skrll return EINVAL; 166 1.2.4.2 skrll #endif 167 1.2.4.2 skrll } 168 1.2.4.2 skrll 169 1.2.4.3 skrll static int 170 1.2.4.4 skrll netbsd32_dodbregs(struct lwp *curl /*tracer*/, 171 1.2.4.4 skrll struct lwp *l /*traced*/, 172 1.2.4.4 skrll struct uio *uio) 173 1.2.4.3 skrll { 174 1.2.4.4 skrll #if defined(PT_GETDBREGS) || defined(PT_SETDBREGS) 175 1.2.4.4 skrll process_dbreg32 r32; 176 1.2.4.4 skrll int error; 177 1.2.4.4 skrll char *kv; 178 1.2.4.4 skrll size_t kl; 179 1.2.4.3 skrll 180 1.2.4.4 skrll KASSERT(l->l_proc->p_flag & PK_32); 181 1.2.4.4 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 182 1.2.4.4 skrll return EINVAL; 183 1.2.4.4 skrll kl = sizeof(r32); 184 1.2.4.4 skrll kv = (char *)&r32; 185 1.2.4.4 skrll 186 1.2.4.4 skrll kv += uio->uio_offset; 187 1.2.4.4 skrll kl -= uio->uio_offset; 188 1.2.4.4 skrll if (kl > uio->uio_resid) 189 1.2.4.4 skrll kl = uio->uio_resid; 190 1.2.4.3 skrll 191 1.2.4.4 skrll error = process_read_dbregs32(l, &r32, &kl); 192 1.2.4.4 skrll if (error == 0) 193 1.2.4.4 skrll error = uiomove(kv, kl, uio); 194 1.2.4.4 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 195 1.2.4.4 skrll if (l->l_stat != LSSTOP) 196 1.2.4.4 skrll error = EBUSY; 197 1.2.4.4 skrll else 198 1.2.4.4 skrll error = process_write_dbregs32(l, &r32, kl); 199 1.2.4.4 skrll } 200 1.2.4.4 skrll uio->uio_offset = 0; 201 1.2.4.4 skrll return error; 202 1.2.4.4 skrll #else 203 1.2.4.3 skrll return EINVAL; 204 1.2.4.4 skrll #endif 205 1.2.4.3 skrll } 206 1.2.4.3 skrll 207 1.2.4.2 skrll static struct ptrace_methods netbsd32_ptm = { 208 1.2.4.2 skrll .ptm_copyinpiod = netbsd32_copyinpiod, 209 1.2.4.2 skrll .ptm_copyoutpiod = netbsd32_copyoutpiod, 210 1.2.4.2 skrll .ptm_doregs = netbsd32_doregs, 211 1.2.4.3 skrll .ptm_dofpregs = netbsd32_dofpregs, 212 1.2.4.4 skrll .ptm_dodbregs = netbsd32_dodbregs 213 1.2.4.2 skrll }; 214 1.2.4.2 skrll 215 1.2.4.2 skrll 216 1.2.4.2 skrll int 217 1.2.4.2 skrll netbsd32_ptrace(struct lwp *l, const struct netbsd32_ptrace_args *uap, 218 1.2.4.2 skrll register_t *retval) 219 1.2.4.2 skrll { 220 1.2.4.2 skrll /* { 221 1.2.4.2 skrll syscallarg(int) req; 222 1.2.4.2 skrll syscallarg(pid_t) pid; 223 1.2.4.2 skrll syscallarg(netbsd32_voidp *) addr; 224 1.2.4.2 skrll syscallarg(int) data; 225 1.2.4.2 skrll } */ 226 1.2.4.2 skrll 227 1.2.4.2 skrll return do_ptrace(&netbsd32_ptm, l, SCARG(uap, req), SCARG(uap, pid), 228 1.2.4.2 skrll SCARG_P32(uap, addr), SCARG(uap, data), retval); 229 1.2.4.2 skrll } 230 1.2.4.2 skrll 231 1.2.4.2 skrll static const struct syscall_package compat_ptrace_syscalls[] = { 232 1.2.4.2 skrll { NETBSD32_SYS_netbsd32_ptrace, 0, (sy_call_t *)netbsd32_ptrace }, 233 1.2.4.2 skrll { 0, 0, NULL }, 234 1.2.4.2 skrll }; 235 1.2.4.2 skrll 236 1.2.4.2 skrll #define DEPS "compat_netbsd32,ptrace_common" 237 1.2.4.2 skrll 238 1.2.4.2 skrll MODULE(MODULE_CLASS_EXEC, compat_netbsd32_ptrace, DEPS); 239 1.2.4.2 skrll 240 1.2.4.2 skrll static int 241 1.2.4.2 skrll compat_netbsd32_ptrace_modcmd(modcmd_t cmd, void *arg) 242 1.2.4.2 skrll { 243 1.2.4.2 skrll int error; 244 1.2.4.2 skrll 245 1.2.4.2 skrll switch (cmd) { 246 1.2.4.2 skrll case MODULE_CMD_INIT: 247 1.2.4.2 skrll error = syscall_establish(&emul_netbsd32, 248 1.2.4.2 skrll compat_ptrace_syscalls); 249 1.2.4.2 skrll break; 250 1.2.4.2 skrll case MODULE_CMD_FINI: 251 1.2.4.2 skrll error = syscall_disestablish(&emul_netbsd32, 252 1.2.4.2 skrll compat_ptrace_syscalls); 253 1.2.4.2 skrll break; 254 1.2.4.2 skrll default: 255 1.2.4.2 skrll error = ENOTTY; 256 1.2.4.2 skrll break; 257 1.2.4.2 skrll } 258 1.2.4.2 skrll return error; 259 1.2.4.2 skrll } 260
Indexes created Mon Sep 29 03:10:08 GMT 2025