implement signalfd(2) and sigqueue(2) system calls

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/test_simple.py b/tests/test_simple.py
index eb03384..07a0740 100644
--- a/tests/test_simple.py
+++ b/tests/test_simple.py
@@ -5,6 +5,7 @@ import asyncio
 import errno
 import os
 import pathlib
+import signal
 import socket
 import unittest
 
@@ -92,6 +93,26 @@ class AsnycioTest(unittest.IsolatedAsyncioTestCase):
             efd.write()
             self.assertEqual(await fut, 1)
 
+    async def test_signalfd(self) -> None:
+        testsig = signal.SIGUSR1
+        sfd = linuxnamespaces.SignalFD(
+            [testsig], linuxnamespaces.SignalFDFlags.NONBLOCK
+        )
+        self.addCleanup(sfd.close)
+        oldmask = signal.pthread_sigmask(signal.SIG_SETMASK, [testsig])
+        self.addCleanup(signal.pthread_sigmask, signal.SIG_SETMASK, oldmask)
+        fut = asyncio.ensure_future(sfd.aread())
+        await asyncio.sleep(0.000001)  # Let the loop run
+        self.assertFalse(fut.done())
+        sigval = 123456789
+        mypid = os.getpid()
+        linuxnamespaces.sigqueue(mypid, testsig, sigval)
+        siginfo = await fut
+        self.assertEqual(siginfo.ssi_signo, testsig)
+        self.assertEqual(siginfo.ssi_pid, mypid)
+        self.assertEqual(siginfo.ssi_uid, os.getuid())
+        self.assertEqual(siginfo.ssi_int, sigval)
+
     async def test_run_in_fork(self) -> None:
         with linuxnamespaces.EventFD(
             0, linuxnamespaces.EventFDFlags.NONBLOCK