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47 lines
845 B
Python
47 lines
845 B
Python
#!/usr/bin/env python
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import fcntl
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import os
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import sys
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def ttyname(fd):
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try:
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t = os.ttyname(fd)
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if hasattr(t, 'decode'):
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t = t.decode()
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return t
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except OSError:
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return None
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def controlling_tty():
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try:
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fp = open('/dev/tty')
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try:
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return ttyname(fp.fileno())
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finally:
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fp.close()
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except (IOError, OSError):
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return None
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fd = int(sys.argv[2])
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st = os.fstat(fd)
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if sys.argv[3] == 'write':
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os.write(fd, u'TEST'.encode())
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buf = u''
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else:
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buf = os.read(fd, 4).decode()
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open(sys.argv[1], 'w').write(repr({
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'buf': buf,
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'flags': fcntl.fcntl(fd, fcntl.F_GETFL),
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'st_mode': st.st_mode,
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'st_dev': st.st_dev,
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'st_ino': st.st_ino,
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'ttyname': ttyname(fd),
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'controlling_tty': controlling_tty(),
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}))
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