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Default branch: MAIN
Current tag: OPENBSD_2_9_BASE
Revision 1.12 / (download) - annotate - [select for diffs], Fri Apr 13 02:39:05 2001 UTC (23 years, 1 month ago) by gluk
Branch: MAIN
CVS Tags: OPENBSD_3_0_BASE,
OPENBSD_3_0,
OPENBSD_2_9_BASE,
OPENBSD_2_9
Changes since 1.11: +3 -3 lines
Diff to previous 1.11 (colored)
Fix overflow in superblock. From FreeBSD. FreeBSD's log: > The ffs superblock includes a 128-byte region for use by temporary > in-core pointers to summary information. An array in this region > (fs_csp) could overflow on filesystems with a very large number of > cylinder groups (~16000 on i386 with 8k blocks). When this happens, > other fields in the superblock get corrupted, and fsck refuses to > check the filesystem. > > Solve this problem by replacing the fs_csp array in 'struct fs' > with a single pointer, and add padding to keep the length of the > 128-byte region fixed. Update the kernel and userland utilities > to use just this single pointer. > > With this change, the kernel no longer makes use of the superblock > fields 'fs_csshift' and 'fs_csmask'. Add a comment to newfs/mkfs.c > to indicate that these fields must be calculated for compatibility > with older kernels. art@ ok.