Commit Graph

14 Commits

Author SHA1 Message Date
Ian Dowse
f55ff3f3ef 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.

Reviewed by:	mckusick
2001-01-15 18:30:40 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Mike Pritchard
56d253f621 Print out the fields that are set in fs_flags. 1999-07-18 02:33:05 +00:00
Poul-Henning Kamp
e0e25bba1a Print out the fs_id field. 1999-06-27 10:05:14 +00:00
Philippe Charnier
074fad210f Add rcsid. Remove unused #includes. 1998-06-15 07:00:01 +00:00
Robert Nordier
25ab4f55c1 Check bytes read to prevent random error message. 1998-04-20 14:09:40 +00:00
Bruce Evans
2b7c05c611 Print fs_maxfilesize. 1997-06-29 20:59:03 +00:00
Peter Wemm
19e1457bc5 Make this compile after the fsirand changes that deleted two fields.
I was not sure whether the fs_id fields should be printed in the clear
in case of sniffing over a network login etc.  It might be an idea
to have somebody with spare time go through and find any other missing
fields that should be reported.

Definate 2.2.x/2.1.x candidate since it breaks the build.
1997-03-28 13:06:59 +00:00
Peter Wemm
9d1741b9da Merge from Lite2 1997-03-11 12:12:26 +00:00
Poul-Henning Kamp
c650708207 dumpfs blindly trusts that it has been handed a filesystem.
If the magic is bad, don't waste our time.

Submitted by: Giles Lean Giles Lean <giles@nemeton.com.au>
Obtained from: NetBSD PR bin/249
1996-10-21 19:40:01 +00:00
Peter Wemm
7976d4aa4f Fix a couple of bogus casts to off_t that caused dumpfs to lseek negative
on filesystems > 2GB (which causes the disk slice code to call Debugger!!)
1996-06-23 00:05:04 +00:00
David Greenman
9eb98cece8 Corrected message when no rotational position table is found. 1994-10-01 16:53:53 +00:00
David Greenman
31fdf44c2c Added a "clean" field to the output - to show the state of the clean flag. 1994-08-20 16:57:45 +00:00
Rodney W. Grimes
8fae3551ec BSD 4.4 Lite sbin Sources
Note:  XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.
1994-05-26 06:35:07 +00:00