summaryrefslogtreecommitdiff
path: root/fs/minix/itree_v2.c
AgeCommit message (Collapse)Author
2010-05-27fs/minix: bugfix, number of indirect block ptrs per block depends on block sizeErik van der Kouwe
The MINIX filesystem driver used a constant number of indirect block pointers in an indirect block. This worked only for filesystems with 1kb block, while the MINIX default block size is now 4kb. As a consequence, large files were read incorrectly on such filesystems and writing a large file would cause the filesystem to become corrupted. This patch computes the number of indirect block pointers based on the block size, making the driver work for each block size. I would like to thank Feiran Zheng ('Fam') for pointing out the cause of the corruption. Signed-off-by: Erik van der Kouwe <vdkouwe@cs.vu.nl> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2007-10-17limit minixfs printks on corrupted dir i_sizeEric Sandeen
This attempts to address CVE-2006-6058 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6058 first reported at http://projects.info-pull.com/mokb/MOKB-17-11-2006.html Essentially a corrupted minix dir inode reporting a very large i_size will loop for a very long time in minix_readdir, minix_find_entry, etc, because on EIO they just move on to try the next page. This is under the BKL, printk-storming as well. This can lock up the machine for a very long time. Simply ratelimiting the printks gets things back under control. Make the message a bit more informative while we're here. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Bodo Eggert <7eggert@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Minix V3 supportAndries Brouwer
This morning I needed to read a Minix V3 filesystem, but unfortunately my 2.6.19 did not support that, and neither did the downloaded 2.6.20rc4. Fortunately, google told me that Daniel Aragones had already done the work, patch found at http://www.terra.es/personal2/danarag/ Unfortunaly, looking at the patch was painful to my eyes, so I polished it a bit before applying. The resulting kernel boots, and reads the filesystem it needed to read. Signed-off-by: Daniel Aragones <danarag@gmail.com> Signed-off-by: Andries Brouwer <aeb@cwi.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-03-25[PATCH] fix messages in fs/minixDenis Vlasenko
Believe it or not, but in fs/minix/*, the oldest filesystem in the kernel, something still can be fixed: printk("new_inode: bit already set"); "\n" is missing! While at it, I also removed periods from the end of error messages and made capitalization uniform. Also s/i-node/inode/, s/printk (/printk(/ Signed-ff-by: Denis Vlasenko <vda@ilport.com.ua> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!