OpenHarmony开发者论坛

标题: OpenHarmony系统修改cfg文件权限方法-使用瑞芯微RK3568开发板 [打印本页]

作者: cjzn-1234 时间: 2024-9-24 14:48
标题: OpenHarmony系统修改cfg文件权限方法-使用瑞芯微RK3568开发板
[md]**一、查看文件路径**

首先init.rkxxx.cfg文件在系统路径 `<span>/vendor/etc/</span>`，如下图所示：

```
C:\Users\industio>hdc shell
# cd vendor/etc/
# ls
audio             fstab.rk3568       iqfil.json  soc_perf
battery             hdfconfig          iqfiles    thermal_config
cgroup_sched       init                ons
distributedhardware  init.rk3568.cfg    param
firmware             init.rk3568.usb.cfg  ressched"
```

**二、文件传至本地**

将需要需要修改的cfg文件从文件系统中拉下来放在本地目录，命令是：`<span>hdc file recv '系统路径' '本地文件路径'</span>`，如下图所示：

```

C:\Users\industio>hdc file recv /vendor/etc/init.rk3568.cfg D:\
[I][2024-07-25 10:49:35] HdcFile::TransferSummary success
FileTransfer finish, Size:3581, File count = 1, time:127ms rate:28.20kB/s
```

**三、修改文件**

在cfg文件中增加权限，注意在对文件修改不要使用TAB键，复制前一行代码后再修改防止出错

```
{
"import" : [
         "init.${ohos.boot.hardware}.usb.cfg"
],
"jobs" : [{
         "name" : "pre-init",
         "cmds" : [
            "write /proc/sys/vm/min_free_kbytes 10240",
            "mount debugfs /sys/kernel/debug /sys/kernel/debug mode=755",
            "write /sys/kernel/debug/hisi_inno_phy/role peripheral"
         ]
      }, {
         "name" : "init",
         "cmds" : [
            "write /proc/1/oom_score_adj -1000",
            "chown system system /sys/kernel/hungtask/userlist",
            "symlink /dev/block/platform/fe310000.sdhci/by-name /dev/block/by-name"
         ]
      }, {
         "name" : "boot",       //在此位置添加设备权限
         "cmds" : [
            "write /sys/block/zram0/disksize 1024M",
            "mkswap /dev/block/zram0",
            "swapon /dev/block/zram0",
            "chmod 777 /dev/ttyAMA2",
+             "chmod 666 /dev/bus/usb/005/001"
+             "chmod 666 /dev/bus/usb/005/002"
            "chmod 775 /sys/class/rfkill/rfkill0/state",
         ]
      }, {
         "name" : "post-fs-data",
         "cmds" : [
            "restorecon",
            "restorecon /data/updater"
         ]
      }
],
"services" : [{
         "name" : "ispserver",
         "path" : ["/vendor/bin/ispserver"],
         "once" : 1,
         "secon" : "u:r:ispserver:s0",
         "uid": "ispserver",
         "gid": [ "ispserver", "camera_host" ]
      }
]
}

```

**四、文件推送**

当修改完成后将文件推送回去，命令如下：

```
hdc shell mount -o remount,rw /vendor    //重新挂载设备，将设备改为可读可写
hdc file send “本地路径” “/vendor/etc/init.rkxxx.cfg” //将修改好的文件覆盖到系统当中
hdc shell reboot       //将文件推送回去，系统重启
```
[/md]

欢迎光临 OpenHarmony开发者论坛 (https://forums.openharmony.cn/)