diff options
| -rw-r--r-- | arch/x86/kernel/ptrace.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index 7161d60..5098049 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -634,6 +634,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) return ret; } +#ifdef CONFIG_X86_32 + void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code) { struct siginfo info; @@ -731,3 +733,65 @@ out: audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax); return 1; } + +#else /* CONFIG_X86_64 */ + +static void syscall_trace(struct pt_regs *regs) +{ + +#if 0 + printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n", + current->comm, + regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0), + current_thread_info()->flags, current->ptrace); +#endif + + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) + ? 0x80 : 0)); + /* + * this isn't the same as continuing with a signal, but it will do + * for normal use. strace only continues with a signal if the + * stopping signal is not SIGTRAP. -brl + */ + if (current->exit_code) { + send_sig(current->exit_code, current, 1); + current->exit_code = 0; + } +} + +asmlinkage void syscall_trace_enter(struct pt_regs *regs) +{ + /* do the secure computing check first */ + secure_computing(regs->orig_ax); + + if (test_thread_flag(TIF_SYSCALL_TRACE) + && (current->ptrace & PT_PTRACED)) + syscall_trace(regs); + + if (unlikely(current->audit_context)) { + if (test_thread_flag(TIF_IA32)) { + audit_syscall_entry(AUDIT_ARCH_I386, + regs->orig_ax, + regs->bx, regs->cx, + regs->dx, regs->si); + } else { + audit_syscall_entry(AUDIT_ARCH_X86_64, + regs->orig_ax, + regs->di, regs->si, + regs->dx, regs->r10); + } + } +} + +asmlinkage void syscall_trace_leave(struct pt_regs *regs) +{ + if (unlikely(current->audit_context)) + audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax); + + if ((test_thread_flag(TIF_SYSCALL_TRACE) + || test_thread_flag(TIF_SINGLESTEP)) + && (current->ptrace & PT_PTRACED)) + syscall_trace(regs); +} + +#endif /* CONFIG_X86_32 */ |