コード例 #1
0
ファイル: ptrace.c プロジェクト: 0x000000FF/edison-linux 
/*
 * XXX Check PT_DTRACE vs TIF_SINGLESTEP for singlestepping check and
 * PT_PTRACED vs TIF_SYSCALL_TRACE for syscall tracing check
 */
void syscall_trace_enter(struct pt_regs *regs)
{
	audit_syscall_entry(UPT_SYSCALL_NR(&regs->regs),
			    UPT_SYSCALL_ARG1(&regs->regs),
			    UPT_SYSCALL_ARG2(&regs->regs),
			    UPT_SYSCALL_ARG3(&regs->regs),
			    UPT_SYSCALL_ARG4(&regs->regs));

	if (!test_thread_flag(TIF_SYSCALL_TRACE))
		return;

	tracehook_report_syscall_entry(regs);
}
コード例 #2
0
/*
 * XXX Check PT_DTRACE vs TIF_SINGLESTEP for singlestepping check and
 * PT_PTRACED vs TIF_SYSCALL_TRACE for syscall tracing check
 */
void syscall_trace_enter(struct pt_regs *regs)
{
	audit_syscall_entry(UPT_SYSCALL_NR(&regs->regs),
			    UPT_SYSCALL_ARG1(&regs->regs),
			    UPT_SYSCALL_ARG2(&regs->regs),
			    UPT_SYSCALL_ARG3(&regs->regs),
			    UPT_SYSCALL_ARG4(&regs->regs));

	if (!test_thread_flag(TIF_SYSCALL_TRACE))
		return;

	/* Avoid "unused result" warning. */
	if (tracehook_report_syscall_entry(regs)) return;
}
コード例 #3
0
ファイル: ptrace.c プロジェクト: andi34/Dhollmen_Kernel 
/*
 * XXX Check PT_DTRACE vs TIF_SINGLESTEP for singlestepping check and
 * PT_PTRACED vs TIF_SYSCALL_TRACE for syscall tracing check
 */
void syscall_trace(struct uml_pt_regs *regs, int entryexit)
{
	int is_singlestep = (current->ptrace & PT_DTRACE) && entryexit;
	int tracesysgood;

	if (unlikely(current->audit_context)) {
		if (!entryexit)
			audit_syscall_entry(HOST_AUDIT_ARCH,
					    UPT_SYSCALL_NR(regs),
					    UPT_SYSCALL_ARG1(regs),
					    UPT_SYSCALL_ARG2(regs),
					    UPT_SYSCALL_ARG3(regs),
					    UPT_SYSCALL_ARG4(regs));
		else audit_syscall_exit(AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
					UPT_SYSCALL_RET(regs));
	}

	/* Fake a debug trap */
	if (is_singlestep)
		send_sigtrap(current, regs, 0);

	if (!test_thread_flag(TIF_SYSCALL_TRACE))
		return;

	if (!(current->ptrace & PT_PTRACED))
		return;

	/*
	 * the 0x80 provides a way for the tracing parent to distinguish
	 * between a syscall stop and SIGTRAP delivery
	 */
	tracesysgood = (current->ptrace & PT_TRACESYSGOOD);
	ptrace_notify(SIGTRAP | (tracesysgood ? 0x80 : 0));

	if (entryexit) /* force do_signal() --> is_syscall() */
		set_thread_flag(TIF_SIGPENDING);

	/*
	 * 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;
	}
}