ubuntu 发布的最佳帖子

点一下右上角的 reboot

然后 （百米冲刺跑出去

参考：

https://zhou-yuxin.github.io/articles/2017/Linux串口网卡（二）——用户态转发程序的实现/index.html

看了一下源码，还真是要写 /etc/ 目录下面的文件：

ubuntu:/opt/D1/tina_d1_open$ grep /etc -r  package/allwinner/wifimanager/ --include *.c
package/allwinner/wifimanager/demo/wifi_longtime_test.c:	wmg_printf(MSG_INFO,"DESCRIPTION:\n\tTest the stability of wifi module(see the test result in file:/etc/test_result).\n");
package/allwinner/wifimanager/demo/wifi_longtime_test.c: *see the test result in file:/etc/test_result
package/allwinner/wifimanager/demo/wifi_longtime_test.c:	wmg_debug_open_file("/etc/wifi_long_time_test.log");
package/allwinner/wifimanager/demo/wifi_longtime_test.c:    sprintf(prt_buf,"echo \"Test Times:%d, Success Times:%d(including get IP timeout times:%d), Failed Times:%d\" > /etc/test_results",i,success_times,timeout_times,fail_times);
package/allwinner/wifimanager/demo/wifi_longtime_test.c:    sprintf(prt_buf,"echo \"Connecting mean time: %llu.%-llu seconds\" >> /etc/test_results",(total_con_microsec/1000000)/i,(total_con_microsec/i)%1000000);
package/allwinner/wifimanager/demo/wifi_longtime_test.c:    wmg_printf(MSG_INFO,prt_buf,"echo \"Disconnecting mean time: %llu.%-llu seconds\" >> /etc/test_results",(total_disc_microsec/1000000)/i,(total_disc_microsec/i)%1000000);
package/allwinner/wifimanager/demo/wifi_longtime_test.c:        sprintf(prt_buf,"echo Congratulations! >> /etc/test_results");
package/allwinner/wifimanager/src/core/wifi_udhcpc.c:    system("/etc/wifi/udhcpc_wlan0 start >/dev/null");
package/allwinner/wifimanager/src/core/wifimanager.c:    system("/etc/wifi/udhcpc_wlan0 stop >/dev/null");
package/allwinner/wifimanager/src/core/wifi.c:static const char IFACE_DIR[]           = "/etc/wifi/sockets";
package/allwinner/wifimanager/src/core/wifi.c:static const char SUPP_CONFIG_TEMPLATE[]= "/etc/wifi/wpa_supplicant_src.conf";
package/allwinner/wifimanager/src/core/wifi.c:static const char SUPP_CONFIG_FILE[]    = "/etc/wifi/wpa_supplicant.conf";
package/allwinner/wifimanager/src/core/wifi.c:static const char CONTROL_IFACE_PATH[]  = "/etc/wifi/sockets";
package/allwinner/wifimanager/src/core/wifi.c:    strncpy(cmd, "/etc/wifi/wifi start", 511);
package/allwinner/wifimanager/src/core/wifi.c:	  system("/etc/wifi/wifi stop");
package/allwinner/wifimanager/src/daemon/wifid_cmd_handle.c:		system("/etc/init.d/wifi_daemon start");
package/allwinner/wifimanager/src/daemon/wifid_cmd_handle.c:	system("/etc/init.d/wifi_daemon stop");
ubuntu:/opt/D1/tina_d1_open$
ubuntu:/opt/D1/tina_d1_open$

@haoxuan-cui 理论上没有问题, 照着韦老师的思路, 小修改一下

@haoxuan-cui 默认没这么大， 我的166M

$ ls output/images/*.img -l
-rw-r--r-- 1 cube cube 166986240 Aug 14 17:11 output/images/sdcard.img

如果是烧卡启动，系统是把 只读的squashfs挂到根文件系统 /

并没有可读写的 overlayfs ，所以出现了 /etc/ 目录不可写的问题

root@TinaLinux:/# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root                17152     17152         0 100% /
devtmpfs                503924         0    503924   0% /dev
tmpfs                   508116        52    508064   0% /tmp
/dev/mmcblk0p1            8151       305      7846   4% /mnt/SDCARD
root@TinaLinux:/#
root@TinaLinux:/#
root@TinaLinux:/# mount
/dev/root on / type squashfs (ro,noatime)
devtmpfs on /dev type devtmpfs (rw,relatime,size=503924k,nr_inodes=125981,mode=755)
proc on /proc type proc (rw,nosuid,nodev,noexec,noatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,mode=600,ptmxmode=000)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
none on /sys/kernel/config type configfs (rw,relatime)
adb on /dev/usb-ffs/adb type functionfs (rw,relatime)
/dev/mmcblk0p1 on /mnt/SDCARD type vfat (rw,relatime,fmask=0000,dmask=0000,allow_utime=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
root@TinaLinux:/#