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Made by Timothy Manning <timothy@yaffs.net> on 08/11/2010
Current BUGS
Current WARNINGS
WARNING- If yaffs is unmounted then most of yaffs' functions return ENODIR.
But some function return EBADF instead.
Functions which return ENOTDIR: open, close, access, unlink, lseek, write, read
Functions which return ENOENT: access, stat
WARNING-the function yaffs_open does not check the mode passed to it.
This means that yaffs open does not return EINVAL if a bad mode is passed to it.
However this causes the error EEXIST to happen instead, because both O_CREAT and O_EXCL flags are set.
WARNING- yaffs_open will work with either of the two mode set to 255.
However there are only 4 or 5 flags that can be set for each of the modes.
This means that the programmer may not be setting the flags properly.
WARNING- When mounting a non-existing mount point the error ENODEV is returned.
The quick tests have been altered to accommodate this error code.
With standard access function in linux the error returned is ENOENT.
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