95a437124b
Check that the dirlist path string specification does not cause overflow and is fully contained in the hints file. Check that the dirlist string is nul-terminated. Make 'hdr' static variable, so that hdr.dirlistlen is available when hints cached value is used on next function calls. Reset hdr.dirlistlen to zero if error was detected, so that allocations use reasonable size. Use 'hints', and not 'p' in the body, since p is only initialized on the first call. Reported and reviewed by: truckman (previous version) Sponsored by: The FreeBSD Foundation CIDs: 1006503, 1006504, 1006676, 1008488, 1007263 MFC after: 2 weeks
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