I am trying to use os.open() and os.lseek() methods to operate on a device file
in Linux. My code goes something like this -
# first, open the file as a plain binary
try:
self.file = open(/dev/relpcfpga, "r+b", buffering=0)
except IOError:
raise IOError ('Failed to open.')
# Figure out file size
self.file.seek(0, 2)
self.file_size = self.file.tell()
The method seek() complains "OSError: [Errno 29] Illegal seek"
The device relpcfpga is a char device.
The same code works with a normal text file.
I have tried to use os.open() and os.lseek() methods, but see the same error.
Is there a different method to operate on device files?
Thanks!
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