20230427配置cv1826的buildroot在串口免登录的方法二
2023/4/27 16:46
进度：可以拿掉密码，但是无法拿掉用户名！
1、
Z:\buildroot1\buildroot\configs\cvitek_cv182x_defconfig
BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
# BR2_TOOLCHAIN_EXTERNAL_HAS_SSP_STRONG is not set
BR2_TOOLCHAIN_EXTERNAL_CXX=y
BR2_TARGET_GENERIC_HOSTNAME="yd-dictpen"
BR2_TARGET_GENERIC_ISSUE="Welcome to YD Buildroot"
# BR2_INIT_NONE is not set
BR2_TARGET_GENERIC_ROOT_PASSWD="root"
BR2_ROOTFS_OVERLAY="board/cvitek/cv1826/overlay-32"
BR2_INIT_BUSYBOX=y
BR2_PACKAGE_BUSYBOX=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
BR2_PACKAGE_INITSCRIPTS=y
修改为：
BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
# BR2_TOOLCHAIN_EXTERNAL_HAS_SSP_STRONG is not set
BR2_TOOLCHAIN_EXTERNAL_CXX=y
BR2_TARGET_GENERIC_HOSTNAME="yd-dictpen"
BR2_TARGET_GENERIC_ISSUE="Welcome to YD Buildroot"
# BR2_INIT_NONE is not set
BR2_TARGET_GENERIC_ROOT_PASSWD=""
BR2_ROOTFS_OVERLAY="board/cvitek/cv1826/overlay-32"
BR2_INIT_BUSYBOX=y
BR2_PACKAGE_BUSYBOX=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
BR2_PACKAGE_INITSCRIPTS=y
LOG信息：
Number Start End Size File system Name Flags
1 4194kB 12.6MB 8389kB BOOT msftdata
2 12.6MB 13.1MB 524kB MISC msftdata
3 13.1MB 13.6MB 524kB PIC msftdata
4 13.6MB 13.8MB 131kB ENV msftdata
5 13.8MB 559MB 545MB ext4 ROOTFS msftdata
6 559MB 601MB 41.9MB SYSTEM msftdata
7 601MB 3673MB 3072MB ext4 DATA msftdata
e2fsck 1.46.2 (28-Feb-2021)
CFG: clean, 15/960 files, 2549/2551 blocks
resize2fs 1.46.2 (28-Feb-2021)
Filesystem at /dev/mmcblk0p7 is mounted on /mnt; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 2
The filesystem on /dev/mmcblk0p7 is now 7488219 (4k) blocks long.
Populating /dev using udev: done
Saving random seed: OK
Starting system message bus: done
Starting bluetoothd: OK
Starting network: OK
Starting wlan0: ifconfig: SIOCGIFFLAGS: No such device
Successfully initialized wpa_supplicant
Could not read interface wlan0 flags: No such device
nl80211: Driver does not support authentication/association or connect commands
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Could not read interface wlan0 flags: No such device
wlan0: Failed to initialize driver interface
Starting adbd: udhcpc: SIOCGIFINDEX: No such device
0 file(s)
2 in ep
1 out ep
1 file(s)
3 in ep
2 out ep
2 file(s)
OK
install_listener('tcp:5037','*smartsocket*')
Starting MCU: load mcu fw: /lib/firmware/mercury_mcu_fw.bin
size = 7066
WARNING: Logging before InitGoogleLogging() is written to STDERR
I0101 00:00:05.430665 339 server.cpp:442] MTP server starting...
done
Welcome to YD Buildroot
yd-dictpen login: root
#
#
#
如果输入密码不是root就会被要求输入密码：
Welcome to YD Buildroot
yd-dictpen login:
Welcome to YD Buildroot
yd-dictpen login: 1
Password:
Login incorrect
yd-dictpen login: root
#
#
#
2、在menuconfig中确认root的密码被拿掉了！
rootroot@rootroot-HP-ZHAN-66-Pro-A-14-G3:~/buildroot1$ cd buildroot/
rootroot@rootroot-HP-ZHAN-66-Pro-A-14-G3:~/buildroot1/buildroot$
rootroot@rootroot-HP-ZHAN-66-Pro-A-14-G3:~/buildroot1/buildroot$ make menuconfig
x x Root FS skeleton (default target skeleton) ---> x x
x x (yd-dictpen) System hostname x x
x x (Welcome to YD Buildroot) System banner x x
x x Passwords encoding (sha-256) ---> x x
x x Init system (BusyBox) ---> x x
x x /dev management (Dynamic using devtmpfs + eudev) ---> x x
x x (system/device_table.txt) Path to the permission tables x x
x x [ ] support extended attributes in device tables x x
x x [ ] Use symlinks to /usr for /bin, /sbin and /lib x x
x x [*] Enable root login with password x x
x x (root) Root password x x
x x /bin/sh (busybox' default shell) ---> x x
x x [*] Run a getty (login prompt) after boot ---> x x
x x [*] remount root filesystem read-write during boot x x
x x () Network interface to configure through DHCP x x
x x (/bin:/sbin:/usr/bin:/usr/sbin) Set the system's default PATH x x
x x [*] Purge unwanted locales x x
x x (C en_US) Locales to keep x x
x x () Generate locale data x x
x x [ ] Enable Native Language Support (NLS) x x
x x -*- Install timezone info x x
x x (default) timezone list x x
x x (Etc/UTC) default local time x x
x x () Path to the users tables x x
x x (board/cvitek/cv1826/overlay-32) Root filesystem overlay directories x x
x x () Custom scripts to run before creating filesystem images x x
x x () Custom scripts to run inside the fakeroot environment x x
x x () Custom scripts to run after creating filesystem images x x
修改为：
x x Root FS skeleton (default target skeleton) ---> x x
x x (yd-dictpen) System hostname x x
x x (Welcome to YD Buildroot) System banner x x
x x Passwords encoding (sha-256) ---> x x
x x Init system (BusyBox) ---> x x
x x /dev management (Dynamic using devtmpfs + eudev) ---> x x
x x (system/device_table.txt) Path to the permission tables x x
x x [ ] support extended attributes in device tables x x
x x [ ] Use symlinks to /usr for /bin, /sbin and /lib x x
x x [*] Enable root login with password x x
x x () Root password x x
x x /bin/sh (busybox' default shell) ---> x x
x x [*] Run a getty (login prompt) after boot ---> x x
x x [*] remount root filesystem read-write during boot x x
x x () Network interface to configure through DHCP x x
x x (/bin:/sbin:/usr/bin:/usr/sbin) Set the system's default PATH x x
x x [*] Purge unwanted locales x x
x x (C en_US) Locales to keep x x
x x () Generate locale data x x
x x [ ] Enable Native Language Support (NLS) x x
x x -*- Install timezone info x x
x x (default) timezone list x x
x x (Etc/UTC) default local time x x
x x () Path to the users tables x x
x x (board/cvitek/cv1826/overlay-32) Root filesystem overlay directories x x
x x () Custom scripts to run before creating filesystem images x x
x x () Custom scripts to run inside the fakeroot environment x x
x x () Custom scripts to run after creating filesystem images x x
x x x x
x x x x
http://e.betheme.net/article/show-999739.aspx?action=onClick
参考博客：
Buildroot根文件系统权限表、用户表、设备管理
参考手册：buildroot手册
在 buildroot 中，默认的 root 用户，可以使用 make menuconfig 来配置；密码在下面菜单设置；
System configuration --->() Root password
3、继续修改：
BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6=y
BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
# BR2_TOOLCHAIN_EXTERNAL_HAS_SSP_STRONG is not set
BR2_TOOLCHAIN_EXTERNAL_CXX=y
#BR2_TARGET_GENERIC_HOSTNAME="yd-dictpen"
#BR2_TARGET_GENERIC_ISSUE="Welcome to YD Buildroot"
# BR2_INIT_NONE is not set
BR2_TARGET_GENERIC_ROOT_PASSWD=""
BR2_ROOTFS_OVERLAY="board/cvitek/cv1826/overlay-32"
BR2_INIT_BUSYBOX=y
BR2_PACKAGE_BUSYBOX=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
BR2_PACKAGE_INITSCRIPTS=y
LOG发现还是有用户名，密码已经被拿掉了！
Welcome to Buildroot
buildroot login: root
#
#
可能会用到的文件：
Z:\buildroot1\buildroot\package\sysvinit\inittab
# /etc/inittab
#
# This inittab is a basic inittab sample for sysvinit, which mimics
# Buildroot's default inittab for BusyBox.
id:3:initdefault:
si0::sysinit:/bin/mount -t proc proc /proc
si1::sysinit:/bin/mount -o remount,rw /
si2::sysinit:/bin/mkdir -p /dev/pts /dev/shm
si3::sysinit:/bin/mount -a
si4::sysinit:/sbin/swapon -a
si5::sysinit:/bin/ln -sf /proc/self/fd /dev/fd 2>/dev/null
si6::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin 2>/dev/null
si7::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout 2>/dev/null
si8::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr 2>/dev/null
si9::sysinit:/bin/hostname -F /etc/hostname
rcS:12345:wait:/etc/init.d/rcS
# S0:1:respawn:-/bin/sh # GENERIC_SERIAL
# Stuff to do for the 3-finger salute
#ca::ctrlaltdel:/sbin/reboot
# Stuff to do before rebooting
shd0:06:wait:/etc/init.d/rcK
shd1:06:wait:/sbin/swapoff -a
shd2:06:wait:/bin/umount -a -r
# The usual halt or reboot actions
hlt0:0:wait:/sbin/halt -dhp
reb0:6:wait:/sbin/reboot
Z:\buildroot1\buildroot\package\busybox\inittab
# /etc/inittab
#
# Copyright (C) 2001 Erik Andersen <[email protected]>
#
# Note: BusyBox init doesn't support runlevels. The runlevels field is
# completely ignored by BusyBox init. If you want runlevels, use
# sysvinit.
#
# Format for each entry: <id>:<runlevels>:<action>:<process>
#
# id == tty to run on, or empty for /dev/console
# runlevels == ignored
# action == one of sysinit, respawn, askfirst, wait, and once
# process == program to run
# Startup the system
::sysinit:/bin/mount -t proc proc /proc
::sysinit:/bin/mount -o remount,rw /
::sysinit:/bin/mkdir -p /dev/pts /dev/shm
::sysinit:/bin/mount -a
::sysinit:/sbin/swapon -a
null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
::sysinit:/bin/hostname -F /etc/hostname
# now run any rc scripts
::sysinit:/etc/init.d/rcS
# Put a getty on the serial port
#ttyS0::respawn:-/bin/sh # GENERIC_SERIAL
# Stuff to do for the 3-finger salute
#::ctrlaltdel:/sbin/reboot
# Stuff to do before rebooting
::shutdown:/etc/init.d/rcK
::shutdown:/sbin/swapoff -a
::shutdown:/bin/umount -a -r
Z:\buildroot1\buildroot\package\sysvinit\sysvinit.mk
################################################################################
#
# sysvinit
#
################################################################################
SYSVINIT_VERSION = 2.99
SYSVINIT_SOURCE = sysvinit-$(SYSVINIT_VERSION).tar.xz
SYSVINIT_SITE = http://download.savannah.nongnu.org/releases/sysvinit
SYSVINIT_LICENSE = GPL-2.0+
SYSVINIT_LICENSE_FILES = COPYING
SYSVINIT_CPE_ID_VENDOR = sysvinit_project
SYSVINIT_MAKE_OPTS = SYSROOT=$(STAGING_DIR)
ifeq ($(BR2_PACKAGE_LIBSELINUX),y)
SYSVINIT_DEPENDENCIES += libselinux
SYSVINIT_MAKE_OPTS += WITH_SELINUX="yes"
endif
define SYSVINIT_BUILD_CMDS
$(TARGET_CONFIGURE_OPTS) $(MAKE) $(SYSVINIT_MAKE_OPTS) -C $(@D)/src
endef
define SYSVINIT_INSTALL_TARGET_CMDS
for x in halt init shutdown killall5; do \
$(INSTALL) -D -m 0755 $(@D)/src/$$x $(TARGET_DIR)/sbin/$$x || exit 1; \
done
$(INSTALL) -D -m 0644 package/sysvinit/inittab $(TARGET_DIR)/etc/inittab
ln -sf /sbin/halt $(TARGET_DIR)/sbin/reboot
ln -sf /sbin/halt $(TARGET_DIR)/sbin/poweroff
ln -sf killall5 $(TARGET_DIR)/sbin/pidof
endef
ifeq ($(BR2_TARGET_GENERIC_GETTY),y)
define SYSVINIT_SET_GETTY
$(SED) '/# GENERIC_SERIAL$$/s~^.*#~$(shell echo $(SYSTEM_GETTY_PORT) | tail -c+4)::respawn:-/bin/sh #~' \
$(TARGET_DIR)/etc/inittab
endef
else
define SYSVINIT_SET_GETTY
$(SED) '/# GENERIC_SERIAL$$/s~^.*#~# S0:1:respawn:-/bin/sh #~' \
$(TARGET_DIR)/etc/inittab
endef
endif # BR2_TARGET_GENERIC_GETTY
SYSVINIT_TARGET_FINALIZE_HOOKS += SYSVINIT_SET_GETTY
SYSVINIT_TARGET_FINALIZE_HOOKS += SYSTEM_REMOUNT_ROOT_INITTAB
$(eval $(generic-package))