Messages in this thread | | | Subject | isofs unhide option: troubles with Wine | From | Jeremy White <> | Date | 24 May 2002 23:30:29 -0500 |
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Greetings,
When installing Microsoft Office with Wine, we find that some MS CDs have certain files marked as hidden on the CD.
With the default isofs mount options, these files are completely inaccessible. (Relevant code is in fs/isofs/namei.c, and dir.c; search for unhide).
You're forced to remount the CD with the -unhide option to make these files visible.
Now, forgive me if I've overlooked TFM, but I did not find any discussion of the unhide option in the archives I could search.
Further, imho, the unhide code is incorrectly implemented in Linux.
The use of the 'hide' bit in Windows has no good parallel in Linux. The current implementation treats a hidden file as if it didn't exist at all, there is no possible way a user space program can see that file. In Windows, the file just is hidden from 'normal' programs, you can still get to the file if you work hard enough.
Further, I hypothesize (perhaps wrongly) that the only use of this hidden bit is on Windows CDs, and largely on MS Office CDs, and so I think it is reasonable for me to call for a change. (Understand, I'm trying to help very basic users to use MS Office; for them to have to su to root, umount, and then mount -o unhide, is a pretty tough thing to ask. See the following article to see why I'm so upset about this: http://biz.yahoo.com/fo/020523/linux_gets_friendlier_1.html)
Unfortunately, I don't have a strong feeling for what the 'right' solution is. I see several options:
1. Invert the logic of the option, make it 'hide' instead of unhide, and so unhide is the default.
2. Make it possible to set this mount option from user space (I don't like this, but it would get me around the problem).
3. Make it so that isofs/dir.c still strips out hidden files, but enable isofs/namei.c to return a hidden file that is opened directly by name.
I am willing to submit a patch to implement the appropriate solution.
Comments and opinions are greatly appreciated; please copy me directly though, as I am not subscribed.
Thanks,
Jeremy
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