33 lines
730 B
Python
33 lines
730 B
Python
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# Script testing an OpenBSD bug
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#
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# The script fails with "OS BUG!!!" with OpenBSD older than 5.2.
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# It works on any version using USE_FORK = False.
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USE_FORK = True
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import fcntl, os, sys
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fd = os.open("/etc/passwd", os.O_RDONLY)
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flags = fcntl.fcntl(fd, fcntl.F_GETFD)
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flags |= fcntl.FD_CLOEXEC
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fcntl.fcntl(fd, fcntl.F_SETFD, flags)
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code = """
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import os, sys
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fd = int(sys.argv[1])
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try:
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os.fstat(fd)
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except OSError:
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print("fd %s closed by exec (FD_CLOEXEC works)" % fd)
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else:
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print("fd %s not closed by exec: FD_CLOEXEC doesn't work, OS BUG!!!" % fd)
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"""
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args = [sys.executable, '-c', code, str(fd)]
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if USE_FORK:
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pid = os.fork()
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if pid:
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os.waitpid(pid, 0)
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sys.exit(0)
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os.execv(args[0], args)
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