Linux SSHFS挂载验证-海思Linux系统

在海思Linux系统上搭建sshfs服务端，使用buildroot来编译sshfs工具软件，使用海思的外部编译链，使用动态链接库，由于flash用户空间太小，使用硬盘挂载进行软件和动态库的拷贝软连接安装。

内核支持FUSE编译选项

CONFIG_FUSE_FS

查看支持文件系统

~ # cat /proc/filesystems nodev sysfs nodev rootfs nodev ramfs nodev bdev nodev proc nodev cgroup nodev tmpfs nodev devtmpfs nodev sockfs nodev pipefs nodev rpc_pipefs nodev devpts ext3 ext2 ext4 cramfs vfat msdos iso9660 nodev nfsd nodev jffs2 fuseblk nodev fuse 【支持了fuse】 nodev fusectl udf yaffs yaffs2 nodev mtd_inodefs nodev ubifs 

buildroot-2019.02编译sshfs

配置外置编译链

Toolchain ---> (/home/logread/imx8/hz-vpu/arm-hisiv600-linux/hisi-linux/arm-hisiv600-linux/target) Toolchain path ($(ARCH)-hisiv600-linux) Toolchain prefix External toolchain gcc version (4.9.x) ---> External toolchain kernel headers series (3.5.x) ---> External toolchain C library (glibc/eglibc) ---> 

编译sshfs

Target packages ---> Filesystem and flash utilities ---> [*] sshfs (FUSE)

依赖太多的库和openssh，下载慢，终于编译完

拷贝程序和动态库

logread@logread:target$ readelf -d usr/bin/sshfs 0x00000001 (NEEDED) Shared library: [libfuse.so.2] 0x00000001 (NEEDED) Shared library: [libgthread-2.0.so.0] 0x00000001 (NEEDED) Shared library: [libglib-2.0.so.0] 0x00000001 (NEEDED) Shared library: [libpthread.so.0] 0x00000001 (NEEDED) Shared library: [libc.so.6] usr/bin/ssh-keygen 0x00000001 (NEEDED) Shared library: [libcrypto.so.1.1] 0x00000001 (NEEDED) Shared library: [libdl.so.2] 0x00000001 (NEEDED) Shared library: [libutil.so.1] 0x00000001 (NEEDED) Shared library: [libz.so.1] 0x00000001 (NEEDED) Shared library: [libcrypt.so.1] 0x00000001 (NEEDED) Shared library: [libresolv.so.2] 0x00000001 (NEEDED) Shared library: [libc.so.6] 0x00000001 (NEEDED) Shared library: [ld-linux.so.3] usr/bin/sshfs 0x00000001 (NEEDED) Shared library: [libfuse.so.2] 0x00000001 (NEEDED) Shared library: [libgthread-2.0.so.0] 0x00000001 (NEEDED) Shared library: [libglib-2.0.so.0] 0x00000001 (NEEDED) Shared library: [libpthread.so.0] 0x00000001 (NEEDED) Shared library: [libc.so.6] usr/sbin/sshd 0x00000001 (NEEDED) Shared library: [libcrypto.so.1.1] 0x00000001 (NEEDED) Shared library: [libdl.so.2] 0x00000001 (NEEDED) Shared library: [libutil.so.1] 0x00000001 (NEEDED) Shared library: [libz.so.1] 0x00000001 (NEEDED) Shared library: [libcrypt.so.1] 0x00000001 (NEEDED) Shared library: [libresolv.so.2] 0x00000001 (NEEDED) Shared library: [libc.so.6] 0x00000001 (NEEDED) Shared library: [ld-linux.so.3] 

启动脚本：etc/init.d/S50sshd

# Make sure the ssh-keygen progam exists [ -f /usr/bin/ssh-keygen ] || exit 0 umask 077 start() { # Create any missing keys /usr/bin/ssh-keygen -A printf "Starting sshd: " /usr/sbin/sshd touch /var/lock/sshd echo "OK" } 

MPU与VPU联调测试

添加VPU root密码

etc/passwd【密码admin】 root:pbsEaKL0HI0rs:0:0::/root:/bin/sh

挂载硬盘，设置IP，创建必要的目录

mount -t ext4 /dev/sda2 /mnt/hd1 ifconfig eth0 192.168.10.254 umask 077 mkdir -p /etc/ssh mkdir -p /mnt/nfs

软件依赖库

ssh-keygen和sshd和sftp-server依赖库：【这3个是openssh- p1编译出的】 ln -s /mnt/hd1/libcrypto.so.1.1 /lib/libcrypto.so.1.1 【libopenssl-1.1.1a编译出的库：libcrypto.so.1.1，libssl.so.1.1】 ln -s /mnt/hd1/libz.so.1.2.11 /lib/libz.so.1 【libzlib-1.2.11编译出的库：libz.so.1.2.11】 ln -s /mnt/hd1/libatomic.so.1.1.0 /lib/libatomic.so.1 【编译链的库：arm-hisiv600-linux-gnueabi/lib/libatomic.so.1.1.0，被stripped】

sshfs依赖库

ln -s /mnt/hd1/libfuse.so.2.9.8 /lib/libfuse.so.2 【libfuse-2.9.8】 ln -s /mnt/hd1/libgthread-2.0.so.0.5600.3 /lib/libgthread-2.0.so.0 【libglib2-2.56.3】 ln -s /mnt/hd1/libglib-2.0.so.0.5600.3 /lib/libglib-2.0.so.0 【libglib2-2.56.3】 ln -s /mnt/hd1/libpcre.so.1.2.10 /lib/libpcre.so.1 【pcre-8.42】

生成key

/mnt/hd1 # ./ssh-keygen -A ssh-keygen: generating new host keys: RSA DSA ECDSA ED25519 得到文件： /etc/ssh/ ssh_host_dsa_key ssh_host_ecdsa_key.pub ssh_host_rsa_key ssh_host_dsa_key.pub ssh_host_ed25519_key ssh_host_rsa_key.pub ssh_host_ecdsa_key ssh_host_ed25519_key.pub 【生成/root/.ssh/id_rsa.pub了吗】【没有】

拷贝配置文件，创建目录，增加sshd用户

cp /mnt/hd1/sshd_config /etc/ssh/ #PermitRootLogin prohibit-password改为 PermitRootLogin yes【否则ssh连接时输入root密码无反应】 mkdir -p /var/empty adduser sshd -u 22 密码：admin /mnt/hd1/sshd 【必须绝对路径执行，否则报错：sshd re-exec requires execution with an absolute path】

MPU ssh测试

ssh root@192.168.10.254 【改了 PermitRootLogin yes成功，否则输入密码一直报无效】 root@WV-200:~# ssh root@192.168.10.254 root@192.168.10.254's password: Welcome to HiLinux. None of nfsroot found in cmdline. 

查看VPU ssh进程

/mnt/hd1 # ps | grep ssh 129 root 0:00 /mnt/hd1/sshd 135 root 0:00 {sshd} sshd: root@pts/0 141 root 0:00 grep ssh 

./ssh root@192.168.10.1【反向连接MPU也成功】

sshfs测试

mkdir -p /usr/libexec/ ln -s /mnt/hd1/sftp-server /usr/libexec/sftp-server mkdir -p /usr/lib/openssh/ ln -s /mnt/hd1/sftp-server /usr/lib/openssh/sftp-server sshfs root@192.168.10.254:/mnt/hd1/nfs /mnt/vpu-hd1 remote host has disconnected【未解决。。。。。。】 

连接失败尝试方法如下

挂载成功打印

sshfs root@192.168.10.254:/mnt/hd1/nfs /mnt/vpu-hd1/ root@192.168.10.254:/mnt/hd1/nfs on /mnt/vpu-hd1 type fuse.sshfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0) root@192.168.10.254:/mnt/hd1/nfs 27.4G 149.7M 25.8G 1% /mnt/vpu-hd1 VPU信息： 577 root 0:00 /mnt/hd1/sshd 578 root 0:00 sshd: root@notty 580 root 0:00 sh -c /usr/libexec/sftp-server 581 root 0:00 /usr/libexec/sftp-server 卸载 fusermount -u /mnt/vpu-hd1 

    10、拷贝output/target/usr/libexec/sftp-server stripped文件【挂载成功】

    11、免密挂载：PermitRootLogin without-password【不能挂载】

/etc/ssh/sshd_config line 83: Unsupported option UsePAM 1、MPU中需要ssh-keygen生成/root/.ssh/id_rsa.pub公钥【 
  
    openssh-keygen. OpenSSH keygen】【openssh-8.0p1.tar.gz】 2、MPU中需要ssh-copy-id上传公钥到VPU【 
   
     openssh-client-utils. OpenSSH client utilities】 3、就能实现免密登陆 bin/packages/aarch64_cortex-a53_neon/packages/openssh-client_8.0p1-2_aarch64_cortex-a53_neon.ipk bin/packages/aarch64_cortex-a53_neon/packages/openssh-keygen_8.0p1-2_aarch64_cortex-a53_neon.ipk bin/packages/aarch64_cortex-a53_neon/packages/openssh-client-utils_8.0p1-2_aarch64_cortex-a53_neon.ipk 安装openssh-client_8.0p1-2_aarch64_cortex-a53_neon.ipk提示空间不够，库已经按照了 直接拷贝openssh-8.0p1下面的ssh-keygen和ssh-copy-id，可运行 空间不够移除库：1.4M Oct 23 07:17 libgio-2.0.so.0.5800.3 root@WV-200:/tmp# ./ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: SHA256:/3jTMGxP5uybGwg0+EINt3rdNA66eR5umsj62mEFOfs root@WV-200 The key's randomart image is: +---[RSA 3072]----+ | . . | | * . | | * = . o | | . B + = . | | S *.. o | | * +=.o | | o E.+X. | | + o B+.=o | | o+= +++o=o | +----[SHA256]-----+ root@WV-200:/tmp# root@WV-200:/tmp# root@WV-200:/tmp# ls /root/.ssh/ id_rsa id_rsa.pub known_hosts root@WV-200:/tmp# ^C root@WV-200:/tmp# ./ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.10.254 ./ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" root@192.168.10.254's password: 卡住了【暂弃】 【不用免密功能了，使用脚本输入密码】 
    
  

    13、scp获取公钥

root@WV-200:/tmp# scp root@192.168.10.254:/etc/ssh/ssh_host_rsa_key.pub ./ root@192.168.10.254's password: sh: scp: not found VPU上面没有安装scp命令嘛？ 把scp命令拷贝到/bin下面后成功： root@WV-200:/tmp# scp root@192.168.10.254:/etc/ssh/ssh_host_rsa_key.pub ./ Host '192.168.10.254' is not in the trusted hosts file. (ssh-rsa fingerprint sha1!! dc:5c:8f:71:64:b3:be:ca:a3:8d:f6:16:00:7d:e3:59:fe:4a:28:2e) Do you want to continue connecting? (y/n) y root@192.168.10.254's password: ssh_host_rsa_key.pub 100% 393 0.4KB/s 00:00 还是需要密钥 

    14、固定key

/tmp # /bin/sshd @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0744 for '/etc/ssh/ssh_host_rsa_key' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. Error loading host key "/etc/ssh/ssh_host_rsa_key": bad permissions Could not load host key: /etc/ssh/ssh_host_rsa_key sshd: no hostkeys available -- exiting. 权限太开放： /tmp # ls /etc/ssh/ -lh total 11 -rw------- 1 root root 1.3K Jan 1 08:00 ssh_host_dsa_key -rw-r--r-- 1 root root 601 Jan 1 08:00 ssh_host_dsa_key.pub -rw------- 1 root root 505 Jan 1 08:00 ssh_host_ecdsa_key -rw-r--r-- 1 root root 173 Jan 1 08:00 ssh_host_ecdsa_key.pub -rw------- 1 root root 399 Jan 1 08:00 ssh_host_ed25519_key -rw-r--r-- 1 root root 93 Jan 1 08:00 ssh_host_ed25519_key.pub -rw------- 1 root root 1.8K Jan 1 08:00 ssh_host_rsa_key -rw-r--r-- 1 root root 393 Jan 1 08:00 ssh_host_rsa_key.pub -rw-rw-r-- 1 root root 3.1K Jan 1 08:20 sshd_config 修改后成功 MPU的固定key: root@WV-200:~# cat /root/.ssh/known_hosts 192.168.10.254 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDQmhcIy6NoIBKape/c64+8uPQ2vNER74DoBxG4PHC5p2Cb/6giZpIK4UfmyFelSxI4ogd4HAW4WRVw01DtaIvdDhQpQ/h6HrOdwhHccw8xqKOIgH0SPt1Nd2+Y2V9NTufyXvXC/bCR9g/jKyAQiElNR11lS3KT5fy+rrWO026oPimXPSDXOWEsr37uXUv3qKta2pSNQV/rSn5v51htgVsnVACCpThI4VpLtyHPdVRvLJWCLIYF9TPM4Pm5Nmm8ohyUYu1o6KgQbgqW7hTBpQGs51xEWe/dNOprdoAi3yqAuh29NTfa2XvPIYgIfS8YNNB2nfyoBsTZwvMzw4uagZk3 

    15、shell脚本中输入密码

#!/bin/sh sshfs_vpu(){ sshfs root@192.168.10.254:/mnt/hd1 /mnt/vpu-hd1 -o password_stdin >& /dev/null < 
  

    16、调试问题

[RCS]: /etc/init.d/S70RootfsDataMount mount: mounting /rom/dev/pts on /dev/pts failed: No such file or directory [RCS]: /etc/init.d/S70RootfsDataMount mount: mounting /dev/mtdblock3 on /mnt/conf failed: No such file or directory mkdir: can't create directory '/mnt/conf/base': Read-only file system mkdir: can't creatoverlayfs: failed to resolve '/mnt/conf/base': -2 e directory '/mnt/conf/work': Read-only file system mount: mounting overlay on /mnt failed: Invalid argument mount: mounting /proc on /mnt/proc failed: No such file or directory mkdir: can't create directory '/mnt/rom': Read-only file system pivot_root: No such file or directory mount: mounting /rom/dev on /dev failed: No such file or directory mount: mounting /rom/tmp on /tmp failed: No such file or directory mount: mounting /rom/sys on /sys failed: No such file or directory mount: mounting /rom/dev/pts on /dev/pts failed: No such file or directory [RCS]: /etc/init.d/S84sshd Starting sshd: random: sshd urandom read with 10 bits of entropy available 70有间断行失败，改为81没有失败 [RCS]: /etc/init.d/S81RootfsDataMount mount: mounting /rom/dev/pts on /dev/pts failed: No such file or directory 81没有问题【这是为何】【陈俊测试没有问题】 S000cmd S80network S82SdMount S90AutoLoad S00devs S81NtpStart S83HddMount rcS S01udev S81RootfsDataMount S84sshd 

    17、MPU开机脚本挂载后网络连接失败，手动挂载可以

挂载脚本

sshfs_mount_vpu() { sshfs root@192.168.10.254:/mnt/hd1 /mnt/vpu-hd1 -o password_stdin >& /dev/null < 
  

查找原因流程如下

	加打印：
	root@WV-200:/etc/init.d# sshfs -d -o debug root@192.168.10.254:/mnt/hd1 /mnt/vpu
	-hd1 -o password_stdin

	FUSE library version: 2.9.7
	nullpath_ok: 0
	nopath: 0
	utime_omit_ok: 0
	WARNING: Ignoring unknown option -a
	ssh: Ignoring unknown configuration option 'ClearAllForwardings=yes'	【报警告】
	ssh: Ignoring unknown configuration option 'NumberOfPasswordPrompts=1'
	WARNING: Ignoring unknown option -2

	ssh: Connection to root@192.168.10.254:22 exited: Disconnect received
	read: Connection reset by peer
	root@WV-200:/etc/init.d#	
	
	查看ssh版本：
	root@WV-200:/etc/init.d# ssh -v
	WARNING: Ignoring unknown option -v
	Dropbear SSH client v2019.78 https://matt.ucc.asn.au/dropbear/dropbear.html	
	ssh是Dropbear内部的，可能是由于精简版导致有些功能不支持，改为openssh
	
	+CONFIG_PACKAGE_openssh-client=y

	 2553 root      4320 S    ssh -x -a -oClearAllForwardings=yes -oNumberOfPasswo
	 2577 root         0 IW   [kworker/3:3]
	 2624 root      3292 S    sshfs root@192.168.10.254:/mnt/hd1 /mnt/vpu-hd1 -o p
	
	改为openssh-client就可以了

总结