The Design and Implementation of the FreeBSD Operating System, Second Edition
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 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    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  * $FreeBSD: stable/12/sys/sys/ptrace.h 326023 2017-11-20 19:43:44Z pfg $
   33  */
   34 
   35 #ifndef _SYS_PTRACE_H_
   36 #define _SYS_PTRACE_H_
   37 
   38 #include <sys/signal.h>
   39 #include <sys/param.h>
   40 #include <machine/reg.h>
   41 
   42 #define PT_TRACE_ME     0       /* child declares it's being traced */
   43 #define PT_READ_I       1       /* read word in child's I space */
   44 #define PT_READ_D       2       /* read word in child's D space */
   45 /* was  PT_READ_U       3        * read word in child's user structure */
   46 #define PT_WRITE_I      4       /* write word in child's I space */
   47 #define PT_WRITE_D      5       /* write word in child's D space */
   48 /* was  PT_WRITE_U      6        * write word in child's user structure */
   49 #define PT_CONTINUE     7       /* continue the child */
   50 #define PT_KILL         8       /* kill the child process */
   51 #define PT_STEP         9       /* single step the child */
   52 
   53 #define PT_ATTACH       10      /* trace some running process */
   54 #define PT_DETACH       11      /* stop tracing a process */
   55 #define PT_IO           12      /* do I/O to/from stopped process. */
   56 #define PT_LWPINFO      13      /* Info about the LWP that stopped. */
   57 #define PT_GETNUMLWPS   14      /* get total number of threads */
   58 #define PT_GETLWPLIST   15      /* get thread list */
   59 #define PT_CLEARSTEP    16      /* turn off single step */
   60 #define PT_SETSTEP      17      /* turn on single step */
   61 #define PT_SUSPEND      18      /* suspend a thread */
   62 #define PT_RESUME       19      /* resume a thread */
   63 
   64 #define PT_TO_SCE       20
   65 #define PT_TO_SCX       21
   66 #define PT_SYSCALL      22
   67 
   68 #define PT_FOLLOW_FORK  23
   69 #define PT_LWP_EVENTS   24      /* report LWP birth and exit */
   70 
   71 #define PT_GET_EVENT_MASK 25    /* get mask of optional events */
   72 #define PT_SET_EVENT_MASK 26    /* set mask of optional events */
   73 
   74 #define PT_GET_SC_ARGS  27      /* fetch syscall args */
   75 
   76 #define PT_GETREGS      33      /* get general-purpose registers */
   77 #define PT_SETREGS      34      /* set general-purpose registers */
   78 #define PT_GETFPREGS    35      /* get floating-point registers */
   79 #define PT_SETFPREGS    36      /* set floating-point registers */
   80 #define PT_GETDBREGS    37      /* get debugging registers */
   81 #define PT_SETDBREGS    38      /* set debugging registers */
   82 
   83 #define PT_VM_TIMESTAMP 40      /* Get VM version (timestamp) */
   84 #define PT_VM_ENTRY     41      /* Get VM map (entry) */
   85 
   86 #define PT_FIRSTMACH    64      /* for machine-specific requests */
   87 #include <machine/ptrace.h>     /* machine-specific requests, if any */
   88 
   89 /* Events used with PT_GET_EVENT_MASK and PT_SET_EVENT_MASK */
   90 #define PTRACE_EXEC     0x0001
   91 #define PTRACE_SCE      0x0002
   92 #define PTRACE_SCX      0x0004
   93 #define PTRACE_SYSCALL  (PTRACE_SCE | PTRACE_SCX)
   94 #define PTRACE_FORK     0x0008
   95 #define PTRACE_LWP      0x0010
   96 #define PTRACE_VFORK    0x0020
   97 
   98 #define PTRACE_DEFAULT  (PTRACE_EXEC)
   99 
  100 struct ptrace_io_desc {
  101         int     piod_op;        /* I/O operation */
  102         void    *piod_offs;     /* child offset */
  103         void    *piod_addr;     /* parent offset */
  104         size_t  piod_len;       /* request length */
  105 };
  106 
  107 /*
  108  * Operations in piod_op.
  109  */
  110 #define PIOD_READ_D     1       /* Read from D space */
  111 #define PIOD_WRITE_D    2       /* Write to D space */
  112 #define PIOD_READ_I     3       /* Read from I space */
  113 #define PIOD_WRITE_I    4       /* Write to I space */
  114 
  115 /* Argument structure for PT_LWPINFO. */
  116 struct ptrace_lwpinfo {
  117         lwpid_t pl_lwpid;       /* LWP described. */
  118         int     pl_event;       /* Event that stopped the LWP. */
  119 #define PL_EVENT_NONE   0
  120 #define PL_EVENT_SIGNAL 1
  121         int     pl_flags;       /* LWP flags. */
  122 #define PL_FLAG_SA      0x01    /* M:N thread */
  123 #define PL_FLAG_BOUND   0x02    /* M:N bound thread */
  124 #define PL_FLAG_SCE     0x04    /* syscall enter point */
  125 #define PL_FLAG_SCX     0x08    /* syscall leave point */
  126 #define PL_FLAG_EXEC    0x10    /* exec(2) succeeded */
  127 #define PL_FLAG_SI      0x20    /* siginfo is valid */
  128 #define PL_FLAG_FORKED  0x40    /* new child */
  129 #define PL_FLAG_CHILD   0x80    /* I am from child */
  130 #define PL_FLAG_BORN    0x100   /* new LWP */
  131 #define PL_FLAG_EXITED  0x200   /* exiting LWP */
  132 #define PL_FLAG_VFORKED 0x400   /* new child via vfork */
  133 #define PL_FLAG_VFORK_DONE 0x800 /* vfork parent has resumed */
  134         sigset_t        pl_sigmask;     /* LWP signal mask */
  135         sigset_t        pl_siglist;     /* LWP pending signal */
  136         struct __siginfo pl_siginfo;    /* siginfo for signal */
  137         char            pl_tdname[MAXCOMLEN + 1]; /* LWP name */
  138         pid_t           pl_child_pid;   /* New child pid */
  139         u_int           pl_syscall_code;
  140         u_int           pl_syscall_narg;
  141 };
  142 
  143 #if defined(_WANT_LWPINFO32) || (defined(_KERNEL) && defined(__LP64__))
  144 struct ptrace_lwpinfo32 {
  145         lwpid_t pl_lwpid;       /* LWP described. */
  146         int     pl_event;       /* Event that stopped the LWP. */
  147         int     pl_flags;       /* LWP flags. */
  148         sigset_t        pl_sigmask;     /* LWP signal mask */
  149         sigset_t        pl_siglist;     /* LWP pending signal */
  150         struct siginfo32 pl_siginfo;    /* siginfo for signal */
  151         char            pl_tdname[MAXCOMLEN + 1]; /* LWP name. */
  152         pid_t           pl_child_pid;   /* New child pid */
  153         u_int           pl_syscall_code;
  154         u_int           pl_syscall_narg;
  155 };
  156 #endif
  157 
  158 /* Argument structure for PT_VM_ENTRY. */
  159 struct ptrace_vm_entry {
  160         int             pve_entry;      /* Entry number used for iteration. */
  161         int             pve_timestamp;  /* Generation number of VM map. */
  162         u_long          pve_start;      /* Start VA of range. */
  163         u_long          pve_end;        /* End VA of range (incl). */
  164         u_long          pve_offset;     /* Offset in backing object. */
  165         u_int           pve_prot;       /* Protection of memory range. */
  166         u_int           pve_pathlen;    /* Size of path. */
  167         long            pve_fileid;     /* File ID. */
  168         uint32_t        pve_fsid;       /* File system ID. */
  169         char            *pve_path;      /* Path name of object. */
  170 };
  171 
  172 #ifdef _KERNEL
  173 
  174 int     ptrace_set_pc(struct thread *_td, unsigned long _addr);
  175 int     ptrace_single_step(struct thread *_td);
  176 int     ptrace_clear_single_step(struct thread *_td);
  177 
  178 #ifdef __HAVE_PTRACE_MACHDEP
  179 int     cpu_ptrace(struct thread *_td, int _req, void *_addr, int _data);
  180 #endif
  181 
  182 /*
  183  * These are prototypes for functions that implement some of the
  184  * debugging functionality exported by procfs / linprocfs and by the
  185  * ptrace(2) syscall.  They used to be part of procfs, but they don't
  186  * really belong there.
  187  */
  188 struct reg;
  189 struct fpreg;
  190 struct dbreg;
  191 struct uio;
  192 int     proc_read_regs(struct thread *_td, struct reg *_reg);
  193 int     proc_write_regs(struct thread *_td, struct reg *_reg);
  194 int     proc_read_fpregs(struct thread *_td, struct fpreg *_fpreg);
  195 int     proc_write_fpregs(struct thread *_td, struct fpreg *_fpreg);
  196 int     proc_read_dbregs(struct thread *_td, struct dbreg *_dbreg);
  197 int     proc_write_dbregs(struct thread *_td, struct dbreg *_dbreg);
  198 int     proc_sstep(struct thread *_td);
  199 int     proc_rwmem(struct proc *_p, struct uio *_uio);
  200 ssize_t proc_readmem(struct thread *_td, struct proc *_p, vm_offset_t _va,
  201             void *_buf, size_t _len);
  202 ssize_t proc_writemem(struct thread *_td, struct proc *_p, vm_offset_t _va,
  203             void *_buf, size_t _len);
  204 #ifdef COMPAT_FREEBSD32
  205 struct reg32;
  206 struct fpreg32;
  207 struct dbreg32;
  208 int     proc_read_regs32(struct thread *_td, struct reg32 *_reg32);
  209 int     proc_write_regs32(struct thread *_td, struct reg32 *_reg32);
  210 int     proc_read_fpregs32(struct thread *_td, struct fpreg32 *_fpreg32);
  211 int     proc_write_fpregs32(struct thread *_td, struct fpreg32 *_fpreg32);
  212 int     proc_read_dbregs32(struct thread *_td, struct dbreg32 *_dbreg32);
  213 int     proc_write_dbregs32(struct thread *_td, struct dbreg32 *_dbreg32);
  214 #endif
  215 #else /* !_KERNEL */
  216 
  217 #include <sys/cdefs.h>
  218 
  219 __BEGIN_DECLS
  220 int     ptrace(int _request, pid_t _pid, caddr_t _addr, int _data);
  221 __END_DECLS
  222 
  223 #endif /* !_KERNEL */
  224 
  225 #endif  /* !_SYS_PTRACE_H_ */

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