diff options
| -rw-r--r-- | arch/m32r/kernel/ptrace.c | 42 | ||||
| -rw-r--r-- | include/asm-m32r/ptrace.h | 5 | ||||
| -rw-r--r-- | kernel/ptrace.c | 10 |
3 files changed, 17 insertions, 40 deletions
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c index abbeaf8..ed4d075 100644 --- a/arch/m32r/kernel/ptrace.c +++ b/arch/m32r/kernel/ptrace.c @@ -570,7 +570,7 @@ withdraw_debug_trap(struct pt_regs *regs) } } -static void +void init_debug_traps(struct task_struct *child) { struct debug_trap *p = &child->thread.debug_trap; @@ -593,8 +593,8 @@ void ptrace_disable(struct task_struct *child) /* nothing to do.. */ } -static int -do_ptrace(long request, struct task_struct *child, long addr, long data) +long +arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; @@ -720,42 +720,6 @@ do_ptrace(long request, struct task_struct *child, long addr, long data) return ret; } -asmlinkage long sys_ptrace(long request, long pid, long addr, long data) -{ - struct task_struct *child; - int ret; - - lock_kernel(); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out; - } - - if (request == PTRACE_ATTACH) { - ret = ptrace_attach(child); - if (ret == 0) - init_debug_traps(child); - goto out_tsk; - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret == 0) - ret = do_ptrace(request, child, addr, data); - -out_tsk: - put_task_struct(child); -out: - unlock_kernel(); - - return ret; -} - /* notification of system call entry/exit * - triggered by current->work.syscall_trace */ diff --git a/include/asm-m32r/ptrace.h b/include/asm-m32r/ptrace.h index 632b4ce..a0755b9 100644 --- a/include/asm-m32r/ptrace.h +++ b/include/asm-m32r/ptrace.h @@ -120,7 +120,10 @@ struct pt_regs { #include <asm/m32r.h> /* M32R_PSW_BSM, M32R_PSW_BPM */ -#define __ARCH_SYS_PTRACE 1 +struct task_struct; +extern void init_debug_traps(struct task_struct *); +#define arch_ptrace_attach(child) \ + init_debug_traps(child) #if defined(CONFIG_ISA_M32R2) || defined(CONFIG_CHIP_VDEC2) #define user_mode(regs) ((M32R_PSW_BPM & (regs)->psw) != 0) diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 0870523..a73ebd3 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -453,6 +453,10 @@ struct task_struct *ptrace_get_task_struct(pid_t pid) return child; } +#ifndef arch_ptrace_attach +#define arch_ptrace_attach(child) do { } while (0) +#endif + #ifndef __ARCH_SYS_PTRACE asmlinkage long sys_ptrace(long request, long pid, long addr, long data) { @@ -476,6 +480,12 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data) if (request == PTRACE_ATTACH) { ret = ptrace_attach(child); + /* + * Some architectures need to do book-keeping after + * a ptrace attach. + */ + if (!ret) + arch_ptrace_attach(child); goto out_put_task_struct; } |