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#ifndef _LINUX_PTRACE_H
#define _LINUX_PTRACE_H
/* ptrace.h */
/* structs and defines to help the user use the ptrace system call. */

/* has the defines to get at the registers. */

#define PTRACE_TRACEME             0
#define PTRACE_PEEKTEXT            1
#define PTRACE_PEEKDATA            2
#define PTRACE_PEEKUSR             3
#define PTRACE_POKETEXT            4
#define PTRACE_POKEDATA            5
#define PTRACE_POKEUSR             6
#define PTRACE_CONT                7
#define PTRACE_KILL                8
#define PTRACE_SINGLESTEP          9

#define PTRACE_ATTACH           0x10
#define PTRACE_DETACH           0x11

#define PTRACE_SYSCALL            24

/* 0x4200-0x4300 are reserved for architecture-independent additions.  */
#define PTRACE_SETOPTIONS       0x4200
#define PTRACE_GETEVENTMSG      0x4201
#define PTRACE_GETSIGINFO       0x4202
#define PTRACE_SETSIGINFO       0x4203

/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD   0x00000001
#define PTRACE_O_TRACEFORK      0x00000002
#define PTRACE_O_TRACEVFORK     0x00000004
#define PTRACE_O_TRACECLONE     0x00000008
#define PTRACE_O_TRACEEXEC      0x00000010
#define PTRACE_O_TRACEVFORKDONE 0x00000020
#define PTRACE_O_TRACEEXIT      0x00000040

#define PTRACE_O_MASK           0x0000007f

/* Wait extended result codes for the above trace options.  */
#define PTRACE_EVENT_FORK       1
#define PTRACE_EVENT_VFORK      2
#define PTRACE_EVENT_CLONE      3
#define PTRACE_EVENT_EXEC       4
#define PTRACE_EVENT_VFORK_DONE 5
#define PTRACE_EVENT_EXIT       6

#include <asm/ptrace.h>

#ifdef __KERNEL__
/*
 * Ptrace flags
 */

#define PT_PTRACED      0x00000001
#define PT_DTRACE       0x00000002      /* delayed trace (used on m68k, i386) */
#define PT_TRACESYSGOOD 0x00000004
#define PT_PTRACE_CAP   0x00000008      /* ptracer can follow suid-exec */
#define PT_TRACE_FORK   0x00000010
#define PT_TRACE_VFORK  0x00000020
#define PT_TRACE_CLONE  0x00000040
#define PT_TRACE_EXEC   0x00000080
#define PT_TRACE_VFORK_DONE     0x00000100
#define PT_TRACE_EXIT   0x00000200

#define PT_TRACE_MASK   0x000003f4
#define PT_SINGLESTEP   0x80000000      /* single stepping (used on ARM) */

#include <linux/compiler.h>             /* For unlikely.  */
#include <linux/sched.h>                /* For struct task_struct.  */

extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len);
extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len);
extern int ptrace_attach(struct task_struct *tsk);
extern int ptrace_detach(struct task_struct *, unsigned int);
extern void ptrace_disable(struct task_struct *);
extern int ptrace_check_attach(struct task_struct *task, int kill);
extern int ptrace_request(struct task_struct *child, long request, long addr, long data);
extern void ptrace_notify(int exit_code);
extern void __ptrace_link(struct task_struct *child,
                          struct task_struct *new_parent);
extern void __ptrace_unlink(struct task_struct *child);

static inline void ptrace_link(struct task_struct *child,
                               struct task_struct *new_parent)
{
        if (unlikely(child->ptrace))
                __ptrace_link(child, new_parent);
}
static inline void ptrace_unlink(struct task_struct *child)
{
        if (unlikely(child->ptrace))
                __ptrace_unlink(child);
}


#ifndef force_successful_syscall_return
/*
 * System call handlers that, upon successful completion, need to return a
 * negative value should call force_successful_syscall_return() right before
 * returning.  On architectures where the syscall convention provides for a
 * separate error flag (e.g., alpha, ia64, ppc{,64}, sparc{,64}, possibly
 * others), this macro can be used to ensure that the error flag will not get
 * set.  On architectures which do not support a separate error flag, the macro
 * is a no-op and the spurious error condition needs to be filtered out by some
 * other means (e.g., in user-level, by passing an extra argument to the
 * syscall handler, or something along those lines).
 */
#define force_successful_syscall_return() do { } while (0)
#endif

#endif

#endif