Commit Graph

16 Commits

Author SHA1 Message Date
Warner Losh
ee7093a640 Remove California Regent's clause 3, per letter 2007-01-09 01:02:06 +00:00
Ian Dowse
e3cce87239 Reset the seek pointer to 0 when a file is successfully opened,
since otherwise the initial seek offset will contain the directory
offset of the filesystem block that contained its directory entry.
This bug was mostly harmless because typically the directory is
less than one filesystem block in size so the offset would be zero.
It did however generally break loading a kernel from the (large)
kernel compile directory.

Also reset the seek pointer when a new inode is opened in read_inode(),
though this is not actually necessary now because all callers set
it afterwards.
2004-09-04 14:54:01 +00:00
John Baldwin
fb6b710c39 Clean up error handling in libstand filesystem code to be more consistent:
- bzipfs and gzipfs now properly return errno values directly from their
  read routines rather than returning -1.
- missing errno values on error returns for the seek routines on almost
  all filesystems were added.
- fstat() now returns -1 if an error occurs rather than ignoring it.
- nfs's readdir() routine now reports valid errno values if an error or
  EOF occurs rather than EPERM  (It was just returning 0 for success and
  1 for failure).
- nullfs used the wrong semantics for every function besides close() and
  seek().  Getting it right for close() appears to be an accident at that.
- read() for buffered files no longer returns 0 (EOF) if an error occurs,
  but returns -1 instead.
2004-01-21 20:12:23 +00:00
Jake Burkholder
5afad5832a Update the second copy of libstand to deal with the new ufs2 superblock
format.  The one in sys/boot/libstand is not connected to the build.

Approved by:	re
2002-12-03 16:25:29 +00:00
Kirk McKusick
1c85e6a35d This commit adds basic support for the UFS2 filesystem. The UFS2
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability
to use jumbo blocks per inode to allow extent like pointer density,
and space for extended attributes (up to twice the filesystem block
size worth of attributes, e.g., on a 16K filesystem, there is space
for 32K of attributes). UFS2 fully supports and runs existing UFS1
filesystems. New filesystems built using newfs can be built in either
UFS1 or UFS2 format using the -O option. In this commit UFS1 is
the default format, so if you want to build UFS2 format filesystems,
you must specify -O 2. This default will be changed to UFS2 when
UFS2 proves itself to be stable. In this commit the boot code for
reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c)
as there is insufficient space in the boot block. Once the size of the
boot block is increased, this code can be defined.

Things to note: the definition of SBSIZE has changed to SBLOCKSIZE.
The header file <ufs/ufs/dinode.h> must be included before
<ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and
ufs_lbn_t.

Still TODO:
Verify that the first level bootstraps work for all the architectures.
Convert the utility ffsinfo to understand UFS2 and test growfs.
Add support for the extended attribute storage. Update soft updates
to ensure integrity of extended attribute storage. Switch the
current extended attribute interfaces to use the extended attribute
storage. Add the extent like functionality (framework is there,
but is currently never used).

Sponsored by: DARPA & NAI Labs.
Reviewed by:	Poul-Henning Kamp <phk@freebsd.org>
2002-06-21 06:18:05 +00:00
Poul-Henning Kamp
4c4bb98266 UFS indirect blocks are size u_int32_t, not daddr_t 2002-05-18 09:07:12 +00:00
Poul-Henning Kamp
ab4f4196a9 #include <sys/disklabel.h> to get BBSIZE. 2002-05-12 20:58:18 +00:00
David E. O'Brien
be04b6d190 Remove 'register' keyword. 2002-03-21 23:39:28 +00:00
John Baldwin
126a0854a7 Add support for overwriting the existing contents of a file to the UFS
driver in libstand.  This specifically does not expand or truncate files
since the filesystem may be dirty or inconsistent.

PR:		kern/32389
Submitted by:	Jonathan Mini <mini@haikugeek.com>
Sponsored by:	ClickArray, Inc.
2001-12-11 00:03:10 +00:00
Matthew Dillon
e74b6a84ce Add __FBSDID()s to libstand 2001-09-30 22:28:01 +00:00
Jonathan Lemon
efb8ff8532 Add a readdir function to the loader fsops vector, and implement the
functionality for some of the filesystesms.
2000-04-29 20:47:10 +00:00
Doug Rabson
f069bf5a2c * Enable old UFS compatibility code for booting from Digital Unix formatted
disks.
* Fix a whole raft of warnings, printf and otherwise.
* Make zalloc work for alpha (just a case of using the right typedef).
* Add some (disabled) malloc debug printing to stand.h.
1998-09-26 10:48:50 +00:00
Mike Smith
95b50c2be3 Replace the old and extremely icky Mach/NetBSD allocator with a similarly
compact and much better one donated by Matt Dillon.  Implement a simple
sbrk() which uses the existing setheap() api.

Remove the custom allocator from the UFS code.  It wasn't working quite
right, and it shouldn't be needed with the new allocator.

Fix a serious problem with changing the value of already-existent
environment variables.  Don't attempt to modify the supposedly-const
argument to putenv()

Fix an off-by-one sizing error in the zipfs code detected by the new
allocator.

Submitted by:	zmalloc from Matt Dillon <dillon@backplane.com>
1998-09-26 01:42:40 +00:00
Doug Rabson
02c40feecd Allocate disk buffers using a custom allocator. The standard allocator fragments
extremely badly if disk buffers are freed back into the main heap and the alpha
bootstrap has a restricted address space which just ran out :-(.
1998-09-20 21:42:20 +00:00
Mike Smith
4ce36a791b Path arguments to *_open functions should be const, but we were mangling
them.

Submitted by:	write-protected text segment in BTX
1998-09-18 22:58:01 +00:00
Mike Smith
6b4f575cb1 This is libstand; a support library for standalone executables (eg. bootstrap
modules).
Obtained from: NetBSD, with some architectural changes and many additions.
1998-08-20 08:19:55 +00:00