def isValidPosixFilename(name, NAME_MAX=255):
"""Checks for a valid POSIX filename
Filename: a name consisting of 1 to {NAME_MAX} bytes used to name a file.
The characters composing the name may be selected from the set of
all character values excluding the slash character and the null byte.
The filenames dot and dot-dot have special meaning.
A filename is sometimes referred to as a "pathname component".
name: (base)name of the file
NAME_MAX: is defined in limits.h (implementation-defined constants)
Maximum number of bytes in a filename
(not including terminating null).
Minimum Acceptable Value: {_POSIX_NAME_MAX}
_POSIX_NAME_MAX: Maximum number of bytes in a filename
(not including terminating null).
Value: 14
More information on http://www.opengroup.org/onlinepubs/009695399/toc.htm
"""
return 1<=len(name)<= NAME_MAX and "/" not in name and "\000" not in name
