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Is Scandir really secure?
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Is Scandir really secure?
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In the UNIX® System Threads Reference, under the heading of "Thread-safety" is a list of functions are "not guaranteed to be thread-safe on all UNIX systems." The function scandir() is absent from this list, while readdir() appears on the list.
However the glibc source for scandir() clearly appears to call readdir(), not the thread-safe readdir_r(). So was scandir() omitted from the list for some other reason, or is it thread-safe for some reason I am missing?
I think, this list covers POSIX functions only. scandir(3) is BSD/SVID and might not be listed there hence. The new, thread-safe functions are probably the focus of this list but not listing old, thread-unsafe functions.
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