FreeBSD-11.0-RELEASE-amd64中的一个简单的新系统调用

问题描述

我是FreeBSD的新手.我在VMware上安装了FreeBSD-11.0-RELEASE-amd64.我要添加第一个新的系统调用.我找到了这个链接.

I am a newbie in FreeBSD. I installed FreeBSD-11.0-RELEASE-amd64 on VMware. I want to add first new system call. I find this link.

我做了:

ee mykern.c

ee mykern.c

#include <sys/sysproto.h>
#include <sys/proc.h>
#include <sys/types.h>
#include <sys/systm.h>

#ifndef _SYS_SYSPROTO_H_
struct myargs {
    int k;
};
#endif

int func(struct thread *p, struct myargs *uap)
{
printf("Hello");
return (0);
}

我将我的系统调用添加到了/kern/syscalls.master的末尾

I added my system call to the end /kern/syscalls.master

550      AUE_NULL      STD { int func(int k);}

然后我做了

sudo make -C/sys/kern/sysent

sudo make -C /sys/kern/ sysent

接下来，我将文件添加到/sys/conf/files

Next, I added the file to /sys/conf/files

 kern/mykern.c       standard

我还将系统调用添加到/kern/capabilities.conf

Also, I added the system call to /kern/capabilities.conf

    ##
    ## Allow associating SHA1 key with user
    ##
    func

最后，在/usr/src/中，我运行了命令

Finally, while in /usr/src/ I ran the command

在这一步中，我得到:

make don't know how to make kernel. Stop

make stopped in /usr/src

推荐答案

检查/usr/src中是否同时存在Makefile和Makefile.inc1.后者实际上是定义buildkernel目标的位置.验证该文件中确实存在目标.

Check that both Makefile and Makefile.inc1 exist in /usr/src. The latter is actually where the buildkernel target is defined. Verify that that target actually exists in that file.

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