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Annotation of dmsdos/patches/cvf.c.README, revision 1.1

1.1     ! root        1: 
        !             2: Update to CVF-FAT 1.1.0 or 1.2.0
        !             3: --------------------------------
        !             4: 
        !             5: Today's kernels (currently means in time of Linux 2.2.2) use still CVF-FAT
        !             6: interface version 1.0.0. That is a bit outdated (and known to have one minor
        !             7: bug and some missing features).
        !             8: 
        !             9: Latest versions are:
        !            10:    * CVF-FAT version 1.1.0 for 2.0.xx kernels
        !            11:    * CVF-FAT version 1.2.0 for kernels 2.1.128 or newer (also 2.2.x)
        !            12:    (The break between those two is somewhere between 2.1.94 and 2.1.128,
        !            13:    exactly it should be when kerneld was replaced by kmod, but I have never
        !            14:    verified that. Better use 2.0 or 2.2 kernels. :) )
        !            15:    
        !            16: Files:
        !            17: 
        !            18:    cvf.c:             CVF-FAT 1.1.0. For kernels that support kerneld.
        !            19:    fat_cvf.txt:       Documentation for CVF-FAT 1.1.0 (in file cvf.c).
        !            20: 
        !            21:    cvf.c-2.1.128:     CVF-FAT 1.2.0. For newer kernels that support kmod 
        !            22:                       instead of kerneld (including 2.2.x kernels).
        !            23:    fat_cvf.txt-2.1.128: Documentation for CVF-FAT 1.2.0 (in file
        !            24:                       cvf.c-2.1.128).
        !            25: 
        !            26: These files _replace_ the respective files in the kernel sources:
        !            27: 
        !            28:    linux/fs/fat/cvf.c
        !            29:    linux/fs/Documentation/filesystems/fat_cvf.txt
        !            30: 
        !            31: The only difference between CVF-FAT 1.1.0 and 1.2.0 is that 1.2.0 has
        !            32: been rewritten for kmod support which replaces kerneld in latest 2.1.xx
        !            33: kernels (and also 2.2.x kernels). 
        !            34: *** Be sure to use the right file for your kernel! You must check the
        !            35:     kernel source or kernel documentation in order to find out whether 
        !            36:     your kernel supports kerneld or kmod. At least, I know that all 2.0.xx 
        !            37:     kernels support kerneld. Also, I checked that 2.1.128 uses kmod. Newer
        !            38:     kernels also should support kmod. That's all I know. You're on your 
        !            39:     own here to find that out. A kernel that supports kmod should have a
        !            40:     file linux/Documentation/kmod.txt or similar, but I'm not 100% sure :)
        !            41: 
        !            42: Who should update
        !            43: -----------------
        !            44: 
        !            45: If you are using CVF-FAT 1.0.0 or older you may want to update. Watch for a 
        !            46: version number in file linux/fs/fat/cvf.c. There should be a line somewhere 
        !            47: at the beginning of the file that reads "CVF-FAT-VERSION-ID: x.y.z" where 
        !            48: "x.y.z" is the version number. If this line is missing you are using version 
        !            49: 1.0.0 or older.
        !            50: 
        !            51: Why update
        !            52: ----------
        !            53: 
        !            54: It fixes a bug that lets the mount command silently succeed if there is a
        !            55: special kind of error. This bug sometimes caused the plain FAT driver to
        !            56: mount a CVF in case of error with CVF-FAT support, which is surely not a
        !            57: good idea :) 
        !            58: 
        !            59: Now 'mount' fails with an error message in that case.
        !            60: 
        !            61: Also the kerneld/kmod-autoload feature is now permanently in that file so you
        !            62: do not have to apply it as a seperate patch. For latest 2.1.xx kernels,
        !            63: where kerneld has been replaced by kmod, the kerneld-autoload support has
        !            64: been rewritten to use kmod instead.
        !            65: 
        !            66: How to update
        !            67: -------------
        !            68: 
        !            69: You can simply replace the old files with the new ones as listed above.
        !            70: Then recompile your modules (or your kernel if fat support is not modular).

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