Commit-Graf

11 Incheckningar

Upphovsman SHA1 Meddelande Datum
8a9b1730de test: Remove argc,argv from tests as there was no use for them 2021-09-05 17:12:25 +02:00
b2b501d97e test: Refactor: Put seccomp tests into child processes ; Simplfy .sh
Refactor the test logic. Seccomp tests that can be
killed run in their own subprocess now.

All test functions now return 0 on success. Therefore,
the shell script can be simplified.
2021-09-05 17:12:25 +02:00
26f391f736 test: implement test_seccomp_errno() 2021-09-05 17:12:25 +02:00
68fd1a0a87 test: test_seccomp_blacklisted_call_permitted(): Add missing default policy 2021-09-05 17:12:25 +02:00
c44ce85628 test: Add test ensuring seccomp ends with default rule, minor fixes 2021-09-05 17:12:25 +02:00
9192ec3aa4 Rewrite syscall policy logic
Instead of having a blacklist and whitelist, we now allow
setting a policy that runs as a chain.

This adds qssb_append_syscalls_policy()

Furthermore, add a feature to decide per syscall which action to take.
This allows now to return an error instead of just killing the process.

In the future, it may allow us to set optimize/shrink the BPF filter.
2021-09-05 17:12:03 +02:00
51844ea3ab bpf: Deny x32 system calls for now
The arch field is the same for x86_64 and x32, thus checking it
is not enough.

Simply using x32 system calls would allow a bypass. Thus,
we must check whether the system call number is in __X32_SYSCALL_BIT.

This is of course a lazy solution, we could also add the
same system call number + _X32_SYSCALL_BIT to our black/whitelists.

For now however, this however will do.
2021-08-12 12:25:12 +02:00
fa06287b13 Use new qssb_append_*_syscall functions, remove old fields 2021-08-12 11:37:19 +02:00
4a4d551e75 Introduce "no_fs" and "no_new_fd" options.
no_fs is a simple way to take away all
FS access, without constructing path_policies etc.

no_new_fd disallows opening any new
file descriptors
2021-08-10 16:58:43 +02:00
a7c04537f7 Rename allowed_syscalls to whitelisted_syscalls for consistency 2021-06-05 20:15:09 +02:00
85c01899a9 Start implementing tests 2021-06-05 20:11:07 +02:00