osxfuse/osxfuse osxfuse-3.3.2

FUSE for OS X 3.3.2

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Optimize vnop_readdir mode VNODE_READDIR_EXTENDED in kernel extension

Our user space buffer for VNODE_READDIR_EXTENDED needs to be smaller since re-packing will expand each struct fuse_dirent.

The worse case (when the name length is 8) corresponds to a struct direntry size of 40 bytes (8-byte aligned) and a struct fuse_dirent size of 32 bytes (8-byte aligned). So having a buffer that is 4/5 the size will prevent us from reading more than we can pack.