From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/arch/um/kernel/signal.c | 36 ++++++++++++++++++++++++++++++++----
1 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/kernel/arch/um/kernel/signal.c b/kernel/arch/um/kernel/signal.c
index 57acbd6..ae4658f 100644
--- a/kernel/arch/um/kernel/signal.c
+++ b/kernel/arch/um/kernel/signal.c
@@ -1,19 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
*/
#include <linux/module.h>
#include <linux/ptrace.h>
#include <linux/sched.h>
+#include <linux/ftrace.h>
#include <asm/siginfo.h>
#include <asm/signal.h>
#include <asm/unistd.h>
#include <frame_kern.h>
#include <kern_util.h>
+#include <os.h>
EXPORT_SYMBOL(block_signals);
EXPORT_SYMBOL(unblock_signals);
+
+void block_signals_trace(void)
+{
+ block_signals();
+ if (current_thread_info())
+ trace_hardirqs_off();
+}
+
+void unblock_signals_trace(void)
+{
+ if (current_thread_info())
+ trace_hardirqs_on();
+ unblock_signals();
+}
+
+void um_trace_signals_on(void)
+{
+ if (current_thread_info())
+ trace_hardirqs_on();
+}
+
+void um_trace_signals_off(void)
+{
+ if (current_thread_info())
+ trace_hardirqs_off();
+}
/*
* OK, we're invoking a handler
@@ -25,7 +53,7 @@
unsigned long sp;
int err;
- if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
+ if (test_thread_flag(TIF_SINGLESTEP) && (current->ptrace & PT_PTRACED))
singlestep = 1;
/* Did we come from a system call? */
@@ -42,7 +70,7 @@
PT_REGS_SYSCALL_RET(regs) = -EINTR;
break;
}
- /* fallthrough */
+ fallthrough;
case -ERESTARTNOINTR:
PT_REGS_RESTART_SYSCALL(regs);
PT_REGS_ORIG_SYSCALL(regs) = PT_REGS_SYSCALL_NR(regs);
@@ -100,7 +128,7 @@
* on the host. The tracing thread will check this flag and
* PTRACE_SYSCALL if necessary.
*/
- if (current->ptrace & PT_DTRACE)
+ if (test_thread_flag(TIF_SINGLESTEP))
current->thread.singlestep_syscall =
is_syscall(PT_REGS_IP(¤t->thread.regs));
--
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