Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/ptrace.h
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1 /* $NetBSD: ptrace.h,v 1.75 2022/06/08 23:12:27 andvar Exp $ */ 2 3 /*- 4 * Copyright (c) 1984, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)ptrace.h 8.2 (Berkeley) 1/4/94 32 */ 33 34 #ifndef _SYS_PTRACE_H_ 35 #define _SYS_PTRACE_H_ 36 37 #include <sys/siginfo.h> 38 #include <sys/signal.h> 39 40 #define PT_TRACE_ME 0 /* child declares it's being traced */ 41 #define PT_READ_I 1 /* read word in child's I space */ 42 #define PT_READ_D 2 /* read word in child's D space */ 43 #define PT_WRITE_I 4 /* write word in child's I space */ 44 #define PT_WRITE_D 5 /* write word in child's D space */ 45 #define PT_CONTINUE 7 /* continue the child */ 46 #define PT_KILL 8 /* kill the child process */ 47 #define PT_ATTACH 9 /* attach to running process */ 48 #define PT_DETACH 10 /* detach from running process */ 49 #define PT_IO 11 /* do I/O to/from the stopped process */ 50 #define PT_DUMPCORE 12 /* make child generate a core dump */ 51 #if defined(__LEGACY_PT_LWPINFO) || defined(_KERNEL) 52 #define PT_LWPINFO 13 /* OBSOLETE: get info about the LWP */ 53 #endif 54 #define PT_SYSCALL 14 /* stop on syscall entry/exit */ 55 #define PT_SYSCALLEMU 15 /* cancel syscall, tracer emulates it */ 56 #define PT_SET_EVENT_MASK 16 /* set the event mask, defined below */ 57 #define PT_GET_EVENT_MASK 17 /* get the event mask, defined below */ 58 #define PT_GET_PROCESS_STATE 18 /* get process state, defined below */ 59 #define PT_SET_SIGINFO 19 /* set signal state, defined below */ 60 #define PT_GET_SIGINFO 20 /* get signal state, defined below */ 61 #define PT_RESUME 21 /* allow execution of the LWP */ 62 #define PT_SUSPEND 22 /* prevent execution of the LWP */ 63 #define PT_STOP 23 /* stop the child process */ 64 #define PT_LWPSTATUS 24 /* get info about the LWP */ 65 #define PT_LWPNEXT 25 /* get info about next LWP */ 66 #define PT_SET_SIGPASS 26 /* set signals to pass to debuggee */ 67 #define PT_GET_SIGPASS 27 /* get signals to pass to debuggee */ 68 69 #define PT_FIRSTMACH 32 /* for machine-specific requests */ 70 #include <machine/ptrace.h> /* machine-specific requests, if any */ 71 72 #define PT_STRINGS \ 73 /* 0 */ "PT_TRACE_ME", \ 74 /* 1 */ "PT_READ_I", \ 75 /* 2 */ "PT_READ_D", \ 76 /* 3 */ "*PT_INVALID_3*", \ 77 /* 4 */ "PT_WRITE_I", \ 78 /* 5 */ "PT_WRITE_D", \ 79 /* 6 */ "*PT_INVALID_6*", \ 80 /* 7 */ "PT_CONTINUE", \ 81 /* 8 */ "PT_KILL", \ 82 /* 9 */ "PT_ATTACH", \ 83 /* 10 */ "PT_DETACH", \ 84 /* 11 */ "PT_IO", \ 85 /* 12 */ "PT_DUMPCORE", \ 86 /* 13 */ "PT_LWPINFO", \ 87 /* 14 */ "PT_SYSCALL", \ 88 /* 15 */ "PT_SYSCALLEMU", \ 89 /* 16 */ "PT_SET_EVENT_MASK", \ 90 /* 17 */ "PT_GET_EVENT_MASK", \ 91 /* 18 */ "PT_GET_PROCESS_STATE", \ 92 /* 19 */ "PT_SET_SIGINFO", \ 93 /* 20 */ "PT_GET_SIGINFO", \ 94 /* 21 */ "PT_RESUME", \ 95 /* 22 */ "PT_SUSPEND", \ 96 /* 23 */ "PT_STOP", \ 97 /* 24 */ "PT_LWPSTATUS", \ 98 /* 25 */ "PT_LWPNEXT", \ 99 /* 26 */ "PT_SET_SIGPASS", \ 100 /* 27 */ "PT_GET_SIGPASS" 101 102 /* PT_{G,S}EVENT_MASK */ 103 typedef struct ptrace_event { 104 int pe_set_event; 105 } ptrace_event_t; 106 107 /* PT_GET_PROCESS_STATE */ 108 typedef struct ptrace_state { 109 int pe_report_event; 110 union { 111 pid_t _pe_other_pid; 112 lwpid_t _pe_lwp; 113 } _option; 114 } ptrace_state_t; 115 116 #define pe_other_pid _option._pe_other_pid 117 #define pe_lwp _option._pe_lwp 118 119 #define PTRACE_FORK 0x0001 /* Report forks */ 120 #define PTRACE_VFORK 0x0002 /* Report vforks */ 121 #define PTRACE_VFORK_DONE 0x0004 /* Report parent resumed from vforks */ 122 #define PTRACE_LWP_CREATE 0x0008 /* Report LWP creation */ 123 #define PTRACE_LWP_EXIT 0x0010 /* Report LWP termination */ 124 #define PTRACE_POSIX_SPAWN 0x0020 /* Report posix_spawn */ 125 126 /* 127 * Argument structure for PT_IO. 128 */ 129 struct ptrace_io_desc { 130 int piod_op; /* I/O operation (see below) */ 131 void *piod_offs; /* child offset */ 132 void *piod_addr; /* parent offset */ 133 size_t piod_len; /* request length (in)/actual count (out) */ 134 }; 135 136 /* piod_op */ 137 #define PIOD_READ_D 1 /* read from D space */ 138 #define PIOD_WRITE_D 2 /* write to D space */ 139 #define PIOD_READ_I 3 /* read from I space */ 140 #define PIOD_WRITE_I 4 /* write to I space */ 141 #define PIOD_READ_AUXV 5 /* Read from aux array */ 142 143 #if defined(__LEGACY_PT_LWPINFO) || defined(_KERNEL) 144 /* 145 * Argument structure for PT_LWPINFO. 146 * 147 * DEPRECATED: Use ptrace_lwpstatus. 148 */ 149 struct ptrace_lwpinfo { 150 lwpid_t pl_lwpid; /* LWP described */ 151 int pl_event; /* Event that stopped the LWP */ 152 }; 153 154 #define PL_EVENT_NONE 0 155 #define PL_EVENT_SIGNAL 1 156 #define PL_EVENT_SUSPENDED 2 157 #endif 158 159 /* 160 * Argument structure for PT_LWPSTATUS. 161 */ 162 163 #define PL_LNAMELEN 20 /* extra 4 for alignment */ 164 165 struct ptrace_lwpstatus { 166 lwpid_t pl_lwpid; /* LWP described */ 167 sigset_t pl_sigpend; /* LWP signals pending */ 168 sigset_t pl_sigmask; /* LWP signal mask */ 169 char pl_name[PL_LNAMELEN]; /* LWP name, may be empty */ 170 void *pl_private; /* LWP private data */ 171 /* Add fields at the end */ 172 }; 173 174 /* 175 * Signal Information structure 176 */ 177 typedef struct ptrace_siginfo { 178 siginfo_t psi_siginfo; /* signal information structure */ 179 lwpid_t psi_lwpid; /* destination LWP of the signal 180 * value 0 means the whole process 181 * (route signal to all LWPs) */ 182 } ptrace_siginfo_t; 183 184 #ifdef _KERNEL 185 186 #ifdef _KERNEL_OPT 187 #include "opt_compat_netbsd32.h" 188 #endif 189 190 #ifdef COMPAT_NETBSD32 191 #include <compat/netbsd32/netbsd32.h> 192 #define process_read_lwpstatus32 netbsd32_read_lwpstatus 193 #define process_lwpstatus32 struct netbsd32_ptrace_lwpstatus 194 #endif 195 196 #ifndef process_lwpstatus32 197 #define process_lwpstatus32 struct ptrace_lwpstatus 198 #endif 199 #ifndef process_lwpstatus64 200 #define process_lwpstatus64 struct ptrace_lwpstatus 201 #endif 202 203 #if defined(PT_GETREGS) || defined(PT_SETREGS) 204 struct reg; 205 #ifndef process_reg32 206 #define process_reg32 struct reg 207 #endif 208 #ifndef process_reg64 209 #define process_reg64 struct reg 210 #endif 211 #endif 212 213 #if defined(PT_GETFPREGS) || defined(PT_SETFPREGS) 214 struct fpreg; 215 #ifndef process_fpreg32 216 #define process_fpreg32 struct fpreg 217 #endif 218 #ifndef process_fpreg64 219 #define process_fpreg64 struct fpreg 220 #endif 221 #endif 222 223 #if defined(PT_GETDBREGS) || defined(PT_SETDBREGS) 224 struct dbreg; 225 #ifndef process_dbreg32 226 #define process_dbreg32 struct dbreg 227 #endif 228 #ifndef process_dbreg64 229 #define process_dbreg64 struct dbreg 230 #endif 231 #endif 232 233 struct ptrace_methods { 234 int (*ptm_copyin_piod)(struct ptrace_io_desc *, const void *, size_t); 235 int (*ptm_copyout_piod)(const struct ptrace_io_desc *, void *, size_t); 236 int (*ptm_copyin_siginfo)(struct ptrace_siginfo *, const void *, size_t); 237 int (*ptm_copyout_siginfo)(const struct ptrace_siginfo *, void *, size_t); 238 int (*ptm_copyout_lwpstatus)(const struct ptrace_lwpstatus *, void *, size_t); 239 int (*ptm_doregs)(struct lwp *, struct lwp *, struct uio *); 240 int (*ptm_dofpregs)(struct lwp *, struct lwp *, struct uio *); 241 int (*ptm_dodbregs)(struct lwp *, struct lwp *, struct uio *); 242 }; 243 244 int ptrace_update_lwp(struct proc *t, struct lwp **lt, lwpid_t lid); 245 void ptrace_hooks(void); 246 247 int process_doregs(struct lwp *, struct lwp *, struct uio *); 248 int process_validregs(struct lwp *); 249 250 int process_dofpregs(struct lwp *, struct lwp *, struct uio *); 251 int process_validfpregs(struct lwp *); 252 253 int process_dodbregs(struct lwp *, struct lwp *, struct uio *); 254 int process_validdbregs(struct lwp *); 255 256 int process_domem(struct lwp *, struct lwp *, struct uio *); 257 258 void proc_stoptrace(int, int, const register_t[], const register_t *, int); 259 void proc_reparent(struct proc *, struct proc *); 260 void proc_changeparent(struct proc *, struct proc *); 261 262 263 int do_ptrace(struct ptrace_methods *, struct lwp *, int, pid_t, void *, 264 int, register_t *); 265 266 void ptrace_read_lwpstatus(struct lwp *, struct ptrace_lwpstatus *); 267 268 void process_read_lwpstatus(struct lwp *, struct ptrace_lwpstatus *); 269 #ifndef process_read_lwpstatus32 270 #define process_read_lwpstatus32 process_read_lwpstatus 271 #endif 272 #ifndef process_read_lwpstatus64 273 #define process_read_lwpstatus64 process_read_lwpstatus 274 #endif 275 276 /* 277 * 64bit architectures that support 32bit emulation (amd64 and sparc64) 278 * will #define process_read_regs32 to netbsd32_process_read_regs (etc). 279 * In all other cases these #defines drop the size suffix. 280 */ 281 282 #ifdef PT_GETDBREGS 283 int process_read_dbregs(struct lwp *, struct dbreg *, size_t *); 284 #ifndef process_read_dbregs32 285 #define process_read_dbregs32 process_read_dbregs 286 #endif 287 #ifndef process_read_dbregs64 288 #define process_read_dbregs64 process_read_dbregs 289 #endif 290 #endif 291 #ifdef PT_GETFPREGS 292 int process_read_fpregs(struct lwp *, struct fpreg *, size_t *); 293 #ifndef process_read_fpregs32 294 #define process_read_fpregs32 process_read_fpregs 295 #endif 296 #ifndef process_read_fpregs64 297 #define process_read_fpregs64 process_read_fpregs 298 #endif 299 #endif 300 #ifdef PT_GETREGS 301 int process_read_regs(struct lwp *, struct reg *); 302 #ifndef process_read_regs32 303 #define process_read_regs32 process_read_regs 304 #endif 305 #ifndef process_read_regs64 306 #define process_read_regs64 process_read_regs 307 #endif 308 #endif 309 int process_set_pc(struct lwp *, void *); 310 int process_sstep(struct lwp *, int); 311 #ifdef PT_SETDBREGS 312 int process_write_dbregs(struct lwp *, const struct dbreg *, size_t); 313 #ifndef process_write_dbregs32 314 #define process_write_dbregs32 process_write_dbregs 315 #endif 316 #ifndef process_write_dbregs64 317 #define process_write_dbregs64 process_write_dbregs 318 #endif 319 #endif 320 #ifdef PT_SETFPREGS 321 int process_write_fpregs(struct lwp *, const struct fpreg *, size_t); 322 #ifndef process_write_fpregs32 323 #define process_write_fpregs32 process_write_fpregs 324 #endif 325 #ifndef process_write_fpregs64 326 #define process_write_fpregs64 process_write_fpregs 327 #endif 328 #endif 329 #ifdef PT_SETREGS 330 int process_write_regs(struct lwp *, const struct reg *); 331 #ifndef process_write_regs32 332 #define process_write_regs32 process_write_regs 333 #endif 334 #ifndef process_write_regs64 335 #define process_write_regs64 process_write_regs 336 #endif 337 #endif 338 339 int ptrace_machdep_dorequest(struct lwp *, struct lwp **, int, 340 void *, int); 341 342 #ifndef FIX_SSTEP 343 #define FIX_SSTEP(p) 344 #endif 345 346 typedef int (*ptrace_regrfunc_t)(struct lwp *, void *, size_t *); 347 typedef int (*ptrace_regwfunc_t)(struct lwp *, void *, size_t); 348 349 #if defined(PT_SETREGS) || defined(PT_GETREGS) || \ 350 defined(PT_SETFPREGS) || defined(PT_GETFPREGS) || \ 351 defined(PT_SETDBREGS) || defined(PT_GETDBREGS) 352 # define PT_REGISTERS 353 #endif 354 355 #else /* !_KERNEL */ 356 357 #include <sys/cdefs.h> 358 359 __BEGIN_DECLS 360 int ptrace(int _request, pid_t _pid, void *_addr, int _data); 361 __END_DECLS 362 363 #endif /* !_KERNEL */ 364 365 #endif /* !_SYS_PTRACE_H_ */
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