netbsd32_ptrace.c revision 1.2.4.2
1 1.2.4.2 skrll /* $NetBSD: netbsd32_ptrace.c,v 1.2.4.2 2016/12/05 10:55:00 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 1.2.4.2 skrll __KERNEL_RCSID(0, "$NetBSD: netbsd32_ptrace.c,v 1.2.4.2 2016/12/05 10:55:00 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 1.2.4.2 skrll 62 1.2.4.2 skrll 63 1.2.4.2 skrll static int 64 1.2.4.2 skrll netbsd32_copyinpiod(struct ptrace_io_desc *piod, const void *addr) 65 1.2.4.2 skrll { 66 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 67 1.2.4.2 skrll 68 1.2.4.2 skrll int error = copyin(addr, &piod32, sizeof(piod32)); 69 1.2.4.2 skrll if (error) 70 1.2.4.2 skrll return error; 71 1.2.4.2 skrll piod->piod_op = piod32.piod_op; 72 1.2.4.2 skrll piod->piod_offs = NETBSD32PTR64(piod32.piod_offs); 73 1.2.4.2 skrll piod->piod_addr = NETBSD32PTR64(piod32.piod_addr); 74 1.2.4.2 skrll piod->piod_len = (size_t)piod32.piod_len; 75 1.2.4.2 skrll 76 1.2.4.2 skrll return 0; 77 1.2.4.2 skrll } 78 1.2.4.2 skrll 79 1.2.4.2 skrll static void 80 1.2.4.2 skrll netbsd32_copyoutpiod(const struct ptrace_io_desc *piod, void *addr) 81 1.2.4.2 skrll { 82 1.2.4.2 skrll struct netbsd32_ptrace_io_desc piod32; 83 1.2.4.2 skrll 84 1.2.4.2 skrll piod32.piod_op = piod->piod_op; 85 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_offs, piod->piod_offs); 86 1.2.4.2 skrll NETBSD32PTR32(piod32.piod_addr, piod->piod_addr); 87 1.2.4.2 skrll piod32.piod_len = (netbsd32_size_t)piod->piod_len; 88 1.2.4.2 skrll (void) copyout(&piod32, addr, sizeof(piod32)); 89 1.2.4.2 skrll } 90 1.2.4.2 skrll 91 1.2.4.2 skrll 92 1.2.4.2 skrll static int 93 1.2.4.2 skrll netbsd32_doregs(struct lwp *curl /*tracer*/, 94 1.2.4.2 skrll struct lwp *l /*traced*/, 95 1.2.4.2 skrll struct uio *uio) 96 1.2.4.2 skrll { 97 1.2.4.2 skrll #if defined(PT_GETREGS) || defined(PT_SETREGS) 98 1.2.4.2 skrll process_reg32 r32; 99 1.2.4.2 skrll int error; 100 1.2.4.2 skrll char *kv; 101 1.2.4.2 skrll int kl; 102 1.2.4.2 skrll 103 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 104 1.2.4.2 skrll return EINVAL; 105 1.2.4.2 skrll 106 1.2.4.2 skrll kl = sizeof(r32); 107 1.2.4.2 skrll kv = (char *)&r32; 108 1.2.4.2 skrll 109 1.2.4.2 skrll kv += uio->uio_offset; 110 1.2.4.2 skrll kl -= uio->uio_offset; 111 1.2.4.2 skrll if ((size_t)kl > uio->uio_resid) 112 1.2.4.2 skrll kl = uio->uio_resid; 113 1.2.4.2 skrll error = process_read_regs32(l, &r32); 114 1.2.4.2 skrll if (error == 0) 115 1.2.4.2 skrll error = uiomove(kv, kl, uio); 116 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 117 1.2.4.2 skrll if (l->l_stat != LSSTOP) 118 1.2.4.2 skrll error = EBUSY; 119 1.2.4.2 skrll else 120 1.2.4.2 skrll error = process_write_regs32(l, &r32); 121 1.2.4.2 skrll } 122 1.2.4.2 skrll 123 1.2.4.2 skrll uio->uio_offset = 0; 124 1.2.4.2 skrll return error; 125 1.2.4.2 skrll #else 126 1.2.4.2 skrll return EINVAL; 127 1.2.4.2 skrll #endif 128 1.2.4.2 skrll } 129 1.2.4.2 skrll 130 1.2.4.2 skrll static int 131 1.2.4.2 skrll netbsd32_dofpregs(struct lwp *curl /*tracer*/, 132 1.2.4.2 skrll struct lwp *l /*traced*/, 133 1.2.4.2 skrll struct uio *uio) 134 1.2.4.2 skrll { 135 1.2.4.2 skrll #if defined(PT_GETFPREGS) || defined(PT_SETFPREGS) 136 1.2.4.2 skrll process_fpreg32 r32; 137 1.2.4.2 skrll int error; 138 1.2.4.2 skrll char *kv; 139 1.2.4.2 skrll size_t kl; 140 1.2.4.2 skrll 141 1.2.4.2 skrll KASSERT(l->l_proc->p_flag & PK_32); 142 1.2.4.2 skrll if (uio->uio_offset < 0 || uio->uio_offset > (off_t)sizeof(r32)) 143 1.2.4.2 skrll return EINVAL; 144 1.2.4.2 skrll kl = sizeof(r32); 145 1.2.4.2 skrll kv = (char *)&r32; 146 1.2.4.2 skrll 147 1.2.4.2 skrll kv += uio->uio_offset; 148 1.2.4.2 skrll kl -= uio->uio_offset; 149 1.2.4.2 skrll if (kl > uio->uio_resid) 150 1.2.4.2 skrll kl = uio->uio_resid; 151 1.2.4.2 skrll 152 1.2.4.2 skrll error = process_read_fpregs32(l, &r32, &kl); 153 1.2.4.2 skrll if (error == 0) 154 1.2.4.2 skrll error = uiomove(kv, kl, uio); 155 1.2.4.2 skrll if (error == 0 && uio->uio_rw == UIO_WRITE) { 156 1.2.4.2 skrll if (l->l_stat != LSSTOP) 157 1.2.4.2 skrll error = EBUSY; 158 1.2.4.2 skrll else 159 1.2.4.2 skrll error = process_write_fpregs32(l, &r32, kl); 160 1.2.4.2 skrll } 161 1.2.4.2 skrll uio->uio_offset = 0; 162 1.2.4.2 skrll return error; 163 1.2.4.2 skrll #else 164 1.2.4.2 skrll return EINVAL; 165 1.2.4.2 skrll #endif 166 1.2.4.2 skrll } 167 1.2.4.2 skrll 168 1.2.4.2 skrll static struct ptrace_methods netbsd32_ptm = { 169 1.2.4.2 skrll .ptm_copyinpiod = netbsd32_copyinpiod, 170 1.2.4.2 skrll .ptm_copyoutpiod = netbsd32_copyoutpiod, 171 1.2.4.2 skrll .ptm_doregs = netbsd32_doregs, 172 1.2.4.2 skrll .ptm_dofpregs = netbsd32_dofpregs 173 1.2.4.2 skrll }; 174 1.2.4.2 skrll 175 1.2.4.2 skrll 176 1.2.4.2 skrll int 177 1.2.4.2 skrll netbsd32_ptrace(struct lwp *l, const struct netbsd32_ptrace_args *uap, 178 1.2.4.2 skrll register_t *retval) 179 1.2.4.2 skrll { 180 1.2.4.2 skrll /* { 181 1.2.4.2 skrll syscallarg(int) req; 182 1.2.4.2 skrll syscallarg(pid_t) pid; 183 1.2.4.2 skrll syscallarg(netbsd32_voidp *) addr; 184 1.2.4.2 skrll syscallarg(int) data; 185 1.2.4.2 skrll } */ 186 1.2.4.2 skrll 187 1.2.4.2 skrll return do_ptrace(&netbsd32_ptm, l, SCARG(uap, req), SCARG(uap, pid), 188 1.2.4.2 skrll SCARG_P32(uap, addr), SCARG(uap, data), retval); 189 1.2.4.2 skrll } 190 1.2.4.2 skrll 191 1.2.4.2 skrll static const struct syscall_package compat_ptrace_syscalls[] = { 192 1.2.4.2 skrll { NETBSD32_SYS_netbsd32_ptrace, 0, (sy_call_t *)netbsd32_ptrace }, 193 1.2.4.2 skrll { 0, 0, NULL }, 194 1.2.4.2 skrll }; 195 1.2.4.2 skrll 196 1.2.4.2 skrll #define DEPS "compat_netbsd32,ptrace_common" 197 1.2.4.2 skrll 198 1.2.4.2 skrll MODULE(MODULE_CLASS_EXEC, compat_netbsd32_ptrace, DEPS); 199 1.2.4.2 skrll 200 1.2.4.2 skrll static int 201 1.2.4.2 skrll compat_netbsd32_ptrace_modcmd(modcmd_t cmd, void *arg) 202 1.2.4.2 skrll { 203 1.2.4.2 skrll int error; 204 1.2.4.2 skrll 205 1.2.4.2 skrll switch (cmd) { 206 1.2.4.2 skrll case MODULE_CMD_INIT: 207 1.2.4.2 skrll error = syscall_establish(&emul_netbsd32, 208 1.2.4.2 skrll compat_ptrace_syscalls); 209 1.2.4.2 skrll break; 210 1.2.4.2 skrll case MODULE_CMD_FINI: 211 1.2.4.2 skrll error = syscall_disestablish(&emul_netbsd32, 212 1.2.4.2 skrll compat_ptrace_syscalls); 213 1.2.4.2 skrll break; 214 1.2.4.2 skrll default: 215 1.2.4.2 skrll error = ENOTTY; 216 1.2.4.2 skrll break; 217 1.2.4.2 skrll } 218 1.2.4.2 skrll return error; 219 1.2.4.2 skrll } 220
Indexes created Mon Sep 29 21:09:56 GMT 2025