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711 '''return an is_exec() function with default to fallback''' |
711 '''return an is_exec() function with default to fallback''' |
712 if checkexec(path): |
712 if checkexec(path): |
713 return lambda x: is_exec(os.path.join(path, x)) |
713 return lambda x: is_exec(os.path.join(path, x)) |
714 return fallback |
714 return fallback |
715 |
715 |
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716 def checksymlink(path): |
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717 """check whether the given path is on a symlink-capable filesystem""" |
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718 # mktemp is not racy because symlink creation will fail if the |
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719 # file already exists |
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720 name = tempfile.mktemp(dir=path) |
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721 try: |
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722 os.symlink(".", name) |
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723 os.unlink(name) |
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724 return True |
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725 except OSError: |
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726 return False |
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727 |
716 # Platform specific variants |
728 # Platform specific variants |
717 if os.name == 'nt': |
729 if os.name == 'nt': |
718 import msvcrt |
730 import msvcrt |
719 nulldev = 'NUL:' |
731 nulldev = 'NUL:' |
720 |
732 |