The Linux FAT issue on SD Cards.. maintainer support please

From: Mukund JB. (mukundjb_at_esntechnologies.co.in)
Date: 08/11/05

  • Next message: Maneesh Soni: "Re: 2.6.13-rc4 use after free in class_device_attr_show" 
    Date:	Thu, 11 Aug 2005 10:57:14 +0530
To: <hirofumi@mail.parknet.co.jp>

    Dear all,

    I am Linux driver programmer.

    I have a FAT12 issue on my SD cards. I have got these addresses from the
    fs-lists as the maintainer support mail IDs for FAT-FS.

    I am using the 2.6.10 kernel, X86 like systems.

    I am NOT able to mount the Camera formatted FAT12 filesystem on my linux
    BOX. SD card is of size 16MB. At the same time I am able to mount the SD
    cards formatted in windows & linux.

    I have identified fat_fill_super() in fs/fat/inode.c file as the
    function that reads the super block of as MS-DOS FS.

    To debug, I have rebuilt my kernel 2.6.10 inserting some debug messages
    in the FS sub-system to know what data is coming into "struct
    fat_boot_sector *b" structure in fs/fat/inode.c file after sb_bread()
    call.

    I believe that this data in the "struct fat_boot_sector *b" should be
    FAT12 information.

    On the camera formatted SD that is NOT mounting I have found this
    structure to be all '0' till total_sectors variable (relevant till here
    on - FAT12).

    Will you please verify if there & tell me if the problem is in the FAT
    sub-system.

    Regards,
    Mukund Jampala

     

     

     

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  • Next message: Maneesh Soni: "Re: 2.6.13-rc4 use after free in class_device_attr_show"

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