well when wouldn't it do that? in what scenario could you even use this tool without needing to execute a binary?
$ landrun --ro /usr/bin cat a
[landrun:error] 2025/03/22 23:50:16 permission denied
$ landrun --ro /usr cat /usr/bin/ls | wc -l
400
executing ls (as in actual binary execution) will require --exec
$ landrun --ro /usr ls /usr/bin/
ls: cannot open directory '/usr/bin/': Permission denied
$ landrun --ro /usr --exec ls /usr/bin/
list of billions of files
note that I don't really love the --exec thingy, if it's not "on" by default it's just for sake of being explicit.
Update: there's a bug to limit "file access", which I'll fix asap.
Update2: Adding a --exec-path instead to limit executable, it wasn't the best idea to have a global --exec anyway
Update3: Have a look at V0.1.4, I think it's far cleaner now.