tests: only use bogus syscall numbers in test 29

The goal of test 29 is to test bogus negative syscall numbers,
unfortunately it appears our choice of syscalls was not bogus on all
the architectures we support.  This commit fixes that by picking a
syscall number well outside the pseudo-syscall/PNR range and removing
the sysmips(2) syscall from the test so as to not cause problems
at a later date.

Signed-off-by: Paul Moore <paul@paul-moore.com>

tests/29-sim-pseudo_syscall.c

@@ -49,15 +49,8 @@ int main(int argc, char *argv[])
  if (rc < 0)
  goto out;
 
- /* SCMP_SYS(sysmips) == 4294957190 (unsigned) */
- rc = seccomp_rule_add(ctx, SCMP_ACT_KILL, SCMP_SYS(sysmips), 0);
- if (rc < 0)
- goto out;
- rc = seccomp_rule_add_exact(ctx, SCMP_ACT_KILL, SCMP_SYS(sysmips), 0);
- if (rc == 0)
- goto out;
- /* -10001 == 4294957295 (unsigned) */
- rc = seccomp_rule_add_exact(ctx, SCMP_ACT_KILL, -10001, 0);
+ /* -100001 == 4294867295 (unsigned) */
+ rc = seccomp_rule_add_exact(ctx, SCMP_ACT_KILL, -100001, 0);
  if (rc == 0)
  goto out;
 

tests/29-sim-pseudo_syscall.py

@@ -32,13 +32,8 @@ def test(args):
  f = SyscallFilter(ALLOW)
  f.remove_arch(Arch())
  f.add_arch(Arch("x86"))
- f.add_rule(KILL, "sysmips")
  try:
- f.add_rule_exactly(KILL, "sysmips")
- except RuntimeError:
- pass
- try:
- f.add_rule_exactly(KILL, -10001)
+ f.add_rule_exactly(KILL, -100001)
  except RuntimeError:
  pass
  return f

tests/29-sim-pseudo_syscall.tests

@@ -9,8 +9,7 @@ test type: bpf-sim
 
 # Testname Arch Syscall Arg0 Arg1 Arg2 Arg3 Arg4 Arg5 Result
 29-sim-pseudo_syscall +x86 0-10 N N N N N N ALLOW
-29-sim-pseudo_syscall +x86 4294957190 N N N N N N ALLOW
-29-sim-pseudo_syscall +x86 4294957295 N N N N N N ALLOW
+29-sim-pseudo_syscall +x86 4294867295 N N N N N N ALLOW
 
 test type: bpf-valgrind