Open probonopd opened 1 month ago
Hi @probonopd ,
in the extras
directory, there some are example programs. Specifically extract_one.c does recursive path resolution and unpacks a single file from an image.
As for the offset, currently you'd have to create a wrapper object around sqfs_file_t
that applies it.
A "compiled" version of the Doxygen reference manual is currently hosted here: https://infraroot.at/projects/squashfs-tools-ng/doxydoc/index.html
I hope this helps.
Thanks for your hint @AgentD. Unfortunately I could not make the offset work yet.
In particular, the sqfs_file_t
structure does not have a fd
member that can be directly accessed (for seeking).
In case you could show me how to do this properly, I'd be super happy. Thank you very much!
I am trying to write
extract_diricon.c
that does the following:.DirIcon
from a zstd compressed squashfs file (resolving symlinks inside the squashfs file)-o
Example:
./extract_diricon -o 12345 my.squashfs
should extract the file.DirIcon
.I figure I need to compile with
gcc -o extract_diricon extract_diricon.c -I/usr/include/sqfs -L/usr/lib/x86_64-linux-gnu -lsquashfs
. But how would I have to code the above?Thank you very much for your help.
(Use case: AppImage files contain a squashfs image that contains an icon, and I want to write a tiny helper to extract this icon, so that file managers can natively show the correct icons for AppImages.)