V4L/DVB: ir-core: dynamically load the compiled IR protocols

[safe/jmp/linux-2.6] / include / linux / ptrace.h

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 1a2b0cb..e1fb607 100644 (file)
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -27,6 +27,26 @@
 #define PTRACE_GETSIGINFO      0x4202
 #define PTRACE_SETSIGINFO      0x4203
 
+/*
+ * Generic ptrace interface that exports the architecture specific regsets
+ * using the corresponding NT_* types (which are also used in the core dump).
+ * Please note that the NT_PRSTATUS note type in a core dump contains a full
+ * 'struct elf_prstatus'. But the user_regset for NT_PRSTATUS contains just the
+ * elf_gregset_t that is the pr_reg field of 'struct elf_prstatus'. For all the
+ * other user_regset flavors, the user_regset layout and the ELF core dump note
+ * payload are exactly the same layout.
+ *
+ * This interface usage is as follows:
+ *     struct iovec iov = { buf, len};
+ *
+ *     ret = ptrace(PTRACE_GETREGSET/PTRACE_SETREGSET, pid, NT_XXX_TYPE, &iov);
+ *
+ * On the successful completion, iov.len will be updated by the kernel,
+ * specifying how much the kernel has written/read to/from the user's iov.buf.
+ */
+#define PTRACE_GETREGSET       0x4204
+#define PTRACE_SETREGSET       0x4205
+
 /* options set using PTRACE_SETOPTIONS */
 #define PTRACE_O_TRACESYSGOOD  0x00000001
 #define PTRACE_O_TRACEFORK     0x00000002
@@ -81,7 +101,6 @@
 
 
 extern long arch_ptrace(struct task_struct *child, long request, long addr, long data);
-extern struct task_struct *ptrace_get_task_struct(pid_t pid);
 extern int ptrace_traceme(void);
 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);
@@ -94,8 +113,7 @@ 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);
-extern int __ptrace_detach(struct task_struct *tracer, struct task_struct *p);
-extern void ptrace_fork(struct task_struct *task, unsigned long clone_flags);
+extern void exit_ptrace(struct task_struct *tracer);
 #define PTRACE_MODE_READ   1
 #define PTRACE_MODE_ATTACH 2
 /* Returns 0 on success, -errno on denial. */
@@ -107,12 +125,7 @@ static inline int ptrace_reparented(struct task_struct *child)
 {
        return child->real_parent != child->parent;
 }
-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))
@@ -171,9 +184,9 @@ static inline void ptrace_init_task(struct task_struct *child, bool ptrace)
        INIT_LIST_HEAD(&child->ptraced);
        child->parent = child->real_parent;
        child->ptrace = 0;
-       if (unlikely(ptrace)) {
+       if (unlikely(ptrace) && (current->ptrace & PT_PTRACED)) {
                child->ptrace = current->ptrace;
-               ptrace_link(child, current->parent);
+               __ptrace_link(child, current->parent);
        }
 }
 
@@ -251,6 +264,9 @@ static inline void user_enable_single_step(struct task_struct *task)
 static inline void user_disable_single_step(struct task_struct *task)
 {
 }
+#else
+extern void user_enable_single_step(struct task_struct *);
+extern void user_disable_single_step(struct task_struct *);
 #endif /* arch_has_single_step */
 
 #ifndef arch_has_block_step
@@ -278,8 +294,22 @@ static inline void user_enable_block_step(struct task_struct *task)
 {
        BUG();                  /* This can never be called.  */
 }
+#else
+extern void user_enable_block_step(struct task_struct *);
 #endif /* arch_has_block_step */
 
+#ifdef ARCH_HAS_USER_SINGLE_STEP_INFO
+extern void user_single_step_siginfo(struct task_struct *tsk,
+                               struct pt_regs *regs, siginfo_t *info);
+#else
+static inline void user_single_step_siginfo(struct task_struct *tsk,
+                               struct pt_regs *regs, siginfo_t *info)
+{
+       memset(info, 0, sizeof(*info));
+       info->si_signo = SIGTRAP;
+}
+#endif
+
 #ifndef arch_ptrace_stop_needed
 /**
  * arch_ptrace_stop_needed - Decide whether arch_ptrace_stop() should be called
@@ -327,15 +357,6 @@ static inline void user_enable_block_step(struct task_struct *task)
 #define arch_ptrace_untrace(task)              do { } while (0)
 #endif
 
-#ifndef arch_ptrace_fork
-/*
- * Do machine-specific work to initialize a new task.
- *
- * This is called from copy_process().
- */
-#define arch_ptrace_fork(child, clone_flags)   do { } while (0)
-#endif
-
 extern int task_current_syscall(struct task_struct *target, long *callno,
                                unsigned long args[6], unsigned int maxargs,
                                unsigned long *sp, unsigned long *pc);