src/lib/libstand/ext2fs.c, branch release/13.5.0-p6

Move lib/libstand to sys/boot/libsa

2017-10-12T14:56:28Z

Move the sources to sys/boot. Make adjustments related to the move. Kill LIBSTAND_SRC since it's no longer needed. Sponsored by: Netflix

prefix UFS symbols with UFS_ to reduce namespace pollution

2017-02-15T19:50:26Z

Specifically: ROOTINO -> UFS_ROOTINO WINO -> UFS_WINO NXADDR -> UFS_NXADDR NDADDR -> UFS_NDADDR NIADDR -> UFS_NIADDR MAXSYMLINKLEN_UFS[12] -> UFS[12]_MAXSYMLINKLEN (for consistency) Also prefix ext2's and nandfs's NDADDR and NIADDR with EXT2_ and NANDFS_ Reviewed by: kib, mckusick Obtained from: NetBSD MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D9536

dosfs support in libstand is broken since r298230

2016-12-30T19:06:29Z

Apparently the libstand dosfs optimization is a bit too optimistic and did introduce possible memory corruption. This patch is backing out the bad part and since this results in dosfs reading full blocks now, we can also remove extra offset argument from dv_strategy callback. The analysis of the issue and the backout patch is provided by Mikhail Kupchik. PR: 214423 Submitted by: Mikhail Kupchik Reported by: Mikhail Kupchik Reviewed by: bapt, allanjude Approved by: allanjude (mentor) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D8644

A new implementation of the loader block cache

2016-04-18T23:09:22Z

The block cache implementation in loader has proven to be almost useless, and in worst case even slowing down the disk reads due to insufficient cache size and extra memory copy. Also the current cache implementation does not cache reads from CDs, or work with zfs built on top of multiple disks. Instead of an LRU, this code uses a simple hash (O(1) read from cache), and instead of a single global cache, a separate cache per block device. The cache also implements limited read-ahead to increase performance. To simplify read ahead management, the read ahead will not wrap over bcache end, so in worst case, single block physical read will be performed to fill the last block in bcache. Booting from a virtual CD over IPMI: 0ms latency, before: 27 second, after: 7 seconds 60ms latency, before: over 12 minutes, after: under 5 minutes. Submitted by: Toomas Soome Reviewed by: delphij (previous version), emaste (previous version) Relnotes: yes Differential Revision: https://reviews.freebsd.org/D4713

Add a divisor parameter to twiddle() so that callers can request that output

2014-12-22T20:42:36Z

only happen on every Nth call. Update the existing twiddle() calls done in various IO loops to roughly reflect the relative IO sizes. That is, tftp and nfs call twiddle() on every 1K block, ufs on every filesystem block, so the network calls now use a much larger divisor than disk IO calls. Also add a new twiddle_divisor() function that allows an application to set a global divisor that is applied on top of the per-call divisors. Nothing calls this yet, but loader(8) will be using it to further throttle the cursor for slow serial consoles.

libstand: Reset the seek pointer in ext2fs as done in UFS.

2013-06-09T01:19:22Z

Based on r134760: 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. PR: 177328 Submitted by: Eric van Gyzen Reviewed by: iedowse MFC after: 5 days

Don't add integers to void pointers.

2004-10-03T15:58:20Z

Clean up error handling in libstand filesystem code to be more consistent:

2004-01-21T20:12:23Z

- 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.

Use an explicitly-sized type instead of daddr_t for on-disk block

2002-05-19T10:50:38Z

numbers.

Add __FBSDID()s to libstand

2001-09-30T22:28:01Z