On Tue, Nov 8, 2011 at 6:02 AM, Dan Luedtke <maildanrl@xxxxxxxxxxxxxx> wrote: > Thanks for all the answers! > >> You need to look at other block-based file systems in the kernel sources in fs dir for examples and understand how they do it. > I looked at fs/minix/* fs/fat/* and peeked into fs/ext2/, but got more > confused so I decided to ask for a starting point. Hi Dan, You may find https://github.com/mkatiyar/testfs helpful. > >> Also i think if you are interested in reading the first sector >> then you can probably check the block/genhd.c file >> get the disk (i.e struct genhd) then the partition (struct hdpart) >> you will be able to get the first sector. > Thanks, a well documented source file. However, shouldn't I get the > right partition (I called it block device in previously sent mails, > thought of e.g. /dev/sda2 as a device not a partition) from VFS when a > user requestes mounting it? > >> That's an old assignment from my uni. > Wow, exactly what I needed! Thanks for this starting point. > >> I would redirect you to learn about struct gendisk and struct bio. > Noted, I will take a look after studying the vvfs-files from Stephens link. > >> Can you tell what are you trying to achieve? > I'd like to implement a filesystem as kernel modul (like fat, ext2, > ...). The filesystem is a very simple one, based on chained blocks > (similar to linked lists in c). I "invented" it when I tried to write > a bootloader that does not require a second stage to read an kernel > image. (This is all more or less a "because we can"-project, no > commercial background, just learning). > > Once again, thank you guys! > > Greetings, > > Dan > -- > Dan Luedtke > http://www.danrl.de > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Thanks - Manish _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
