[Will Hawkins (hawkinsw)]

No description provided.

[Will Hawkins (hawkinsw)]

I found that --insert-files would be a valuable option to have implemented when using Litebox to run dynamically linked ELF files on Linux and thought I could help. Without support for --insert-files, attempting to execute a dynamically linked ELF file on Linux (e.g.,

$ ./target/debug/litebox_runner_linux_userland \
--unstable \
--rewrite-syscalls \
/usr/bin/echo testing

) resulted in

Error: failed to open the ELF file

Caused by:
    ENOENT: No such file or directory

because the files accessed by ld.so were not in the sandboxed FS.

Although the current state of the PR is WIP,

$./target/debug/litebox_runner_linux_userland \
--unstable \
--insert-file /lib64/libc.so.6 \
--insert-file /lib64/ld-linux-x86-64.so.2 \
--insert-file /usr/lib64/libtinfo.so.6 \
--rewrite-syscalls \
/usr/bin/echo testing

works:

testing

I will continue to brush up the PR and would love any feedback that you have! If, however, this implementation is not something that you want, I do not want to waste your time!

As I said before, this project is really awesome! Thank you for being so open to contributions!