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How do I write to/make changes to an existing squashfs filesystem? I have tried using aufs/unionfs, but these require kernel modules that are extremely hard to compile.

Answer 1

不使用 auf/ unufs / unuffs。例如,在 Fedora 系统中, 使用安装 puffs 工具

#yum install squashfs-tools

This will get you /sbin/mksquashfs and /usr/sbin/unsquashfs installed on your host machine. Use these to uncompress an existing squashfs, make changes, and then compress it back again. Like so....

#ls rfs.squashfs 
#unsquashfs rfs.squashfs 
#ls rfs.squashfs squashfs

现在做出更改

#cd squashfs
#mkdir etc/vector

压回去,压回去

#mksquashfs squashfs my-new-squashfs

Answer 2

Using (mk|un)squashfs you may loose original permissions, compression type and so on. So, use unsquashfs -s to determine useful options. Also, you may mount -o loop -t squashfs to review fs PS: sorry, can t comment

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