Add supporting dir subprocessdata

Author: fanninpm

Lib/test/subprocessdata/fd_status.py

@@ -0,0 +1,34 @@
+"""When called as a script, print a comma-separated list of the open
+file descriptors on stdout.
+
+Usage:
+fd_stats.py: check all file descriptors
+fd_status.py fd1 fd2 ...: check only specified file descriptors
+"""
+
+import errno
+import os
+import stat
+import sys
+
+if __name__ == "__main__":
+    fds = []
+    if len(sys.argv) == 1:
+        try:
+            _MAXFD = os.sysconf("SC_OPEN_MAX")
+        except:
+            _MAXFD = 256
+        test_fds = range(0, _MAXFD)
+    else:
+        test_fds = map(int, sys.argv[1:])
+    for fd in test_fds:
+        try:
+            st = os.fstat(fd)
+        except OSError as e:
+            if e.errno == errno.EBADF:
+                continue
+            raise
+        # Ignore Solaris door files
+        if not stat.S_ISDOOR(st.st_mode):
+            fds.append(fd)
+    print(','.join(map(str, fds)))

Lib/test/subprocessdata/input_reader.py

@@ -0,0 +1,7 @@
+"""When called as a script, consumes the input"""
+
+import sys
+
+if __name__ == "__main__":
+    for line in sys.stdin:
+        pass

Lib/test/subprocessdata/qcat.py

@@ -0,0 +1,7 @@
+"""When ran as a script, simulates cat with no arguments."""
+
+import sys
+
+if __name__ == "__main__":
+    for line in sys.stdin:
+        sys.stdout.write(line)

Lib/test/subprocessdata/qgrep.py

@@ -0,0 +1,10 @@
+"""When called with a single argument, simulated fgrep with a single
+argument and no options."""
+
+import sys
+
+if __name__ == "__main__":
+    pattern = sys.argv[1]
+    for line in sys.stdin:
+        if pattern in line:
+            sys.stdout.write(line)

Lib/test/subprocessdata/sigchild_ignore.py

@@ -0,0 +1,15 @@
+import signal, subprocess, sys, time
+# On Linux this causes os.waitpid to fail with OSError as the OS has already
+# reaped our child process.  The wait() passing the OSError on to the caller
+# and causing us to exit with an error is what we are testing against.
+signal.signal(signal.SIGCHLD, signal.SIG_IGN)
+subprocess.Popen([sys.executable, '-c', 'print("albatross")']).wait()
+# Also ensure poll() handles an errno.ECHILD appropriately.
+p = subprocess.Popen([sys.executable, '-c', 'print("albatross")'])
+num_polls = 0
+while p.poll() is None:
+    # Waiting for the process to finish.
+    time.sleep(0.01)  # Avoid being a CPU busy loop.
+    num_polls += 1
+    if num_polls > 3000:
+        raise RuntimeError('poll should have returned 0 within 30 seconds')