1 #ifndef _LINUX_PTRACE_H 2 #define _LINUX_PTRACE_H 3 /* ptrace.h */ 4 /* structs and defines to help the user use the ptrace system call. */ 5 6 /* has the defines to get at the registers. */ 7 8 #define PTRACE_TRACEME 0 9 #define PTRACE_PEEKTEXT 1 10 #define PTRACE_PEEKDATA 2 11 #define PTRACE_PEEKUSR 3 12 #define PTRACE_POKETEXT 4 13 #define PTRACE_POKEDATA 5 14 #define PTRACE_POKEUSR 6 15 #define PTRACE_CONT 7 16 #define PTRACE_KILL 8 17 #define PTRACE_SINGLESTEP 9 18 19 #define PTRACE_ATTACH 0x10 20 #define PTRACE_DETACH 0x11 21 22 #define PTRACE_SYSCALL 24 23 24 /* 0x4200-0x4300 are reserved for architecture-independent additions. */ 25 #define PTRACE_SETOPTIONS 0x4200 26 #define PTRACE_GETEVENTMSG 0x4201 27 #define PTRACE_GETSIGINFO 0x4202 28 #define PTRACE_SETSIGINFO 0x4203 29 30 /* options set using PTRACE_SETOPTIONS */ 31 #define PTRACE_O_TRACESYSGOOD 0x00000001 32 #define PTRACE_O_TRACEFORK 0x00000002 33 #define PTRACE_O_TRACEVFORK 0x00000004 34 #define PTRACE_O_TRACECLONE 0x00000008 35 #define PTRACE_O_TRACEEXEC 0x00000010 36 #define PTRACE_O_TRACEVFORKDONE 0x00000020 37 #define PTRACE_O_TRACEEXIT 0x00000040 38 39 #define PTRACE_O_MASK 0x0000007f 40 41 /* Wait extended result codes for the above trace options. */ 42 #define PTRACE_EVENT_FORK 1 43 #define PTRACE_EVENT_VFORK 2 44 #define PTRACE_EVENT_CLONE 3 45 #define PTRACE_EVENT_EXEC 4 46 #define PTRACE_EVENT_VFORK_DONE 5 47 #define PTRACE_EVENT_EXIT 6 48 49 #include <asm/ptrace.h> 50 51 #ifdef __KERNEL__ 52 /* 53 * Ptrace flags 54 * 55 * The owner ship rules for task->ptrace which holds the ptrace 56 * flags is simple. When a task is running it owns it's task->ptrace 57 * flags. When the a task is stopped the ptracer owns task->ptrace. 58 */ 59 60 #define PT_PTRACED 0x00000001 61 #define PT_DTRACE 0x00000002 /* delayed trace (used on m68k, i386) */ 62 #define PT_TRACESYSGOOD 0x00000004 63 #define PT_PTRACE_CAP 0x00000008 /* ptracer can follow suid-exec */ 64 #define PT_TRACE_FORK 0x00000010 65 #define PT_TRACE_VFORK 0x00000020 66 #define PT_TRACE_CLONE 0x00000040 67 #define PT_TRACE_EXEC 0x00000080 68 #define PT_TRACE_VFORK_DONE 0x00000100 69 #define PT_TRACE_EXIT 0x00000200 70 #define PT_ATTACHED 0x00000400 /* parent != real_parent */ 71 72 #define PT_TRACE_MASK 0x000003f4 73 74 /* single stepping state bits (used on ARM and PA-RISC) */ 75 #define PT_SINGLESTEP_BIT 31 76 #define PT_SINGLESTEP (1<<PT_SINGLESTEP_BIT) 77 #define PT_BLOCKSTEP_BIT 30 78 #define PT_BLOCKSTEP (1<<PT_BLOCKSTEP_BIT) 79 80 #include <linux/compiler.h> /* For unlikely. */ 81 #include <linux/sched.h> /* For struct task_struct. */ 82 83 84 extern long arch_ptrace(struct task_struct *child, long request, long addr, long data); 85 extern struct task_struct *ptrace_get_task_struct(pid_t pid); 86 extern int ptrace_traceme(void); 87 extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len); 88 extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len); 89 extern int ptrace_attach(struct task_struct *tsk); 90 extern int ptrace_detach(struct task_struct *, unsigned int); 91 extern void ptrace_disable(struct task_struct *); 92 extern int ptrace_check_attach(struct task_struct *task, int kill); 93 extern int ptrace_request(struct task_struct *child, long request, long addr, long data); 94 extern void ptrace_notify(int exit_code); 95 extern void __ptrace_link(struct task_struct *child, 96 struct task_struct *new_parent); 97 extern void __ptrace_unlink(struct task_struct *child); 98 extern void ptrace_untrace(struct task_struct *child); 99 extern int ptrace_may_attach(struct task_struct *task); 100 101 static inline void ptrace_link(struct task_struct *child, 102 struct task_struct *new_parent) 103 { 104 if (unlikely(child->ptrace)) 105 __ptrace_link(child, new_parent); 106 } 107 static inline void ptrace_unlink(struct task_struct *child) 108 { 109 if (unlikely(child->ptrace)) 110 __ptrace_unlink(child); 111 } 112 113 114 #ifndef force_successful_syscall_return 115 /* 116 * System call handlers that, upon successful completion, need to return a 117 * negative value should call force_successful_syscall_return() right before 118 * returning. On architectures where the syscall convention provides for a 119 * separate error flag (e.g., alpha, ia64, ppc{,64}, sparc{,64}, possibly 120 * others), this macro can be used to ensure that the error flag will not get 121 * set. On architectures which do not support a separate error flag, the macro 122 * is a no-op and the spurious error condition needs to be filtered out by some 123 * other means (e.g., in user-level, by passing an extra argument to the 124 * syscall handler, or something along those lines). 125 */ 126 #define force_successful_syscall_return() do { } while (0) 127 #endif 128 129 #endif 130 131 #endif 132
