Tutorial :Check if a file is setuid root in Python


I'm trying to check if a file has the setuid bit in Python.

The stat doc mentions a S_ISUID function but it only works with os.chmod(), not to actually read the setuid bit. It also lists S_IMODE, but I have no idea how to interpret it.

How can I easily check if a file as the setuid root bit set?


stat.S_ISUID is the mode bit for 'setuid'. You compare the stat result's mode to see if it contains that bit:

>>> ping = os.stat('/bin/ping')  >>> ping.st_mode & stat.S_ISUID  2048  >>> echo = os.stat('/bin/echo')  >>> echo.st_mode & stat.S_ISUID  0  

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