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我修改了内核里的SYS_dev为50（原来为23），结果内核启动不了了。 #12

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leo-frank opened this issue May 1, 2021 · 3 comments
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我修改了内核里的SYS_dev为50（原来为23），结果内核启动不了了。 #12

leo-frank opened this issue May 1, 2021 · 3 comments
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@leo-frank
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我修改了内核里的SYS_dev为50（原来为23），结果内核启动不了了。
image

我觉得可能是内核哪里隐含的调用了sys_dev。我进行了一些寻找，但是没有找到，我也尝试了在initcode中寻找，也没有找到。
请问这是怎么回事？谢谢！
@retrhelo
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retrhelo commented May 1, 2021

可能是不是sh程序没有更新？在更改了syscall的编号后，需要重新编译用户程序并生成文件镜像

@retrhelo retrhelo added the help wanted Extra attention is needed label May 1, 2021
@AtomHeartCoder
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在init.c和sh.c有通过dev函数调用sys_dev，这个系统调用只是用来将console设备绑定到0，1，2三个文件描述符。图中的情况应该是shell不能正确地从console设备读取从而导致退出，而init进程则会重启shell，导致死循环。您需要将init和sh重新编译并存入文件镜像或SD卡中，如 @retrhelo 所描述。

@SKTT1Ryze SKTT1Ryze pinned this issue May 7, 2021
@leo-frank
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感谢

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@retrhelo @AtomHeartCoder @leo-frank