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CVS log for src/lib/libperfuse/perfuse.c

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Default branch: MAIN


Revision 1.44 / (download) - annotate - [select for diffs], Wed Feb 23 21:54:40 2022 UTC (11 months, 1 week ago) by andvar
Branch: MAIN
CVS Tags: netbsd-10-base, netbsd-10, HEAD
Changes since 1.43: +3 -3 lines
Diff to previous 1.43 (colored)

fix various typos in comments, mainly immediatly/immediately/,
as well shared and recently fixed typos in OpenBSD code by Jonathan Grey.

Revision 1.43 / (download) - annotate - [select for diffs], Sun Aug 8 20:54:48 2021 UTC (17 months, 4 weeks ago) by nia
Branch: MAIN
Changes since 1.42: +2 -2 lines
Diff to previous 1.42 (colored)

introduce a SOL_LOCAL for unix-domain socket level socket options
as an alias of the current 0 used for these options, as in FreeBSD.

reviewed by many.

Revision 1.40.14.1 / (download) - annotate - [select for diffs], Mon Jun 10 22:05:26 2019 UTC (3 years, 7 months ago) by christos
Branch: phil-wifi
Changes since 1.40: +4 -3 lines
Diff to previous 1.40 (colored) next main 1.41 (colored)

Sync with HEAD

Revision 1.42 / (download) - annotate - [select for diffs], Wed Apr 17 12:30:51 2019 UTC (3 years, 9 months ago) by maya
Branch: MAIN
CVS Tags: phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x
Changes since 1.41: +3 -3 lines
Diff to previous 1.41 (colored)

fix typo

Revision 1.40.6.1 / (download) - annotate - [select for diffs], Sun Feb 10 13:40:41 2019 UTC (3 years, 11 months ago) by martin
Branch: netbsd-8
CVS Tags: netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1
Changes since 1.40: +2 -1 lines
Diff to previous 1.40 (colored) next main 1.41 (colored)

Pull up following revision(s) (requested by manu in ticket #1186):

	lib/libperfuse/perfuse.c: revision 1.41
	lib/libperfuse/perfuse_priv.h: revision 1.37
	lib/libperfuse/ops.c: revision 1.85
	lib/libperfuse/ops.c: revision 1.86
	lib/libperfuse/debug.c: revision 1.13

Use reclaim2 to fix reclaim/lookup race conditions

The PUFFS reclaim operation had a race condition with lookups: we could
be asked to lookup a node, then to reclaim it before lookup completion.

At lookup completion, we would then create a leaked node.

Enter the PUFFS reclaim2 operation, which features a nlookup argument.

That let us count how many lookups are pending and avoid the above
described scenario. It also makes the codes simplier.

 -

Fix directory filehandle usage with libufse. Fix lookup count
libfuse does not use filehandle the same way for directories and other
objects. As a result, filehandles obtained by OPENDIR should not be
sent on non-directory related operations like READ/WRITE/GETATTR...

While there, fix the lookup count sent to the FORGET operation, which
led to leaked nodes.

Revision 1.40.12.1 / (download) - annotate - [select for diffs], Mon Nov 26 01:52:13 2018 UTC (4 years, 2 months ago) by pgoyette
Branch: pgoyette-compat
CVS Tags: pgoyette-compat-merge-20190127
Changes since 1.40: +2 -1 lines
Diff to previous 1.40 (colored) next main 1.41 (colored)

Sync with HEAD, resolve a couple of conflicts

Revision 1.41 / (download) - annotate - [select for diffs], Fri Nov 16 02:39:02 2018 UTC (4 years, 2 months ago) by manu
Branch: MAIN
CVS Tags: pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126
Changes since 1.40: +2 -1 lines
Diff to previous 1.40 (colored)

Use reclaim2 to fix reclaim/lookup race conditions

The PUFFS reclaim operation had a race condition with lookups: we could
be asked to lookup a node, then to reclaim it before lookup completion.
At lookup completion, we would then create a leaked node.

Enter the PUFFS reclaim2 operation, which features a nlookup argument.
That let us count how many lookups are pending and avoid the above
described scenario. It also makes the codes simplier.

Revision 1.31.10.5.4.1 / (download) - annotate - [select for diffs], Wed Jan 18 08:46:23 2017 UTC (6 years ago) by skrll
Branch: netbsd-7-nhusb
Changes since 1.31.10.5: +27 -6 lines
Diff to previous 1.31.10.5 (colored) next main 1.31.10.6 (colored)

Sync with netbsd-5

Revision 1.37.2.1 / (download) - annotate - [select for diffs], Fri Nov 4 14:48:54 2016 UTC (6 years, 3 months ago) by pgoyette
Branch: pgoyette-localcount
Changes since 1.37: +27 -6 lines
Diff to previous 1.37 (colored) next main 1.38 (colored)

Sync with HEAD

Revision 1.31.10.6 / (download) - annotate - [select for diffs], Tue Nov 1 19:49:04 2016 UTC (6 years, 3 months ago) by snj
Branch: netbsd-7
CVS Tags: netbsd-7-nhusb-base-20170116, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1
Changes since 1.31.10.5: +27 -6 lines
Diff to previous 1.31.10.5 (colored) to branchpoint 1.31 (colored) next main 1.32 (colored)

Pull up following revision(s) (requested by manu in ticket #1266):
	lib/libperfuse/fuse.h: revision 1.7
	lib/libperfuse/libperfuse.3: revision 1.4, 1.5
	lib/libperfuse/perfuse.c: revision 1.38-1.40
	lib/libperfuse/perfuse_if.h: revision 1.21, 1.22
	usr.sbin/perfused/msg.c: revision 1.23, 1.24
	usr.sbin/perfused/perfused.8: revision 1.12
Make FUSE socket buffer tunable
When dealing with high I/O throughput, we could run out of buffer
space if the filesystem was not consuming requests fast enough.
Here we slightly raise the buffer size, and we make it tunable
through the PERFUSE_BUFSIZE environment variable so that we can
cope with higher requirement later.
While there, document PERFUSE_OPTIONS environment variable.
--
make this compile again, and simplify.
--
Sort sections. new sentence, new line. Whitespace.
--
make the env stuff visible.
--
remove dup function

Revision 1.40 / (download) - annotate - [select for diffs], Wed Oct 19 01:30:35 2016 UTC (6 years, 3 months ago) by christos
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-compat-base, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-8-base, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, matt-nb8-mediatek-base, matt-nb8-mediatek, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Branch point for: phil-wifi, pgoyette-compat, netbsd-8
Changes since 1.39: +7 -7 lines
Diff to previous 1.39 (colored)

make the env stuff visible.

Revision 1.39 / (download) - annotate - [select for diffs], Tue Oct 18 17:56:31 2016 UTC (6 years, 3 months ago) by christos
Branch: MAIN
Changes since 1.38: +17 -26 lines
Diff to previous 1.38 (colored)

make this compile again, and simplify.

Revision 1.38 / (download) - annotate - [select for diffs], Tue Oct 18 15:06:17 2016 UTC (6 years, 3 months ago) by manu
Branch: MAIN
Changes since 1.37: +35 -5 lines
Diff to previous 1.37 (colored)

Make FUSE socket buffer tunable

When dealing with high I/O throughput, we could run out of buffer
space if the filesystem was not consuming requests fast enough.
Here we slightly raise the buffer size, and we make it tunable
through the PERFUSE_BUFSIZE environment variable so that we can
cope with higher requirement later.

While there, document PERFUSE_OPTIONS environment variable.

Revision 1.31.10.5 / (download) - annotate - [select for diffs], Thu Aug 6 21:52:13 2015 UTC (7 years, 6 months ago) by snj
Branch: netbsd-7
CVS Tags: netbsd-7-nhusb-base, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0
Branch point for: netbsd-7-nhusb
Changes since 1.31.10.4: +24 -14 lines
Diff to previous 1.31.10.4 (colored) to branchpoint 1.31 (colored)

Pull up following revision(s) (requested by christos in ticket #923):
	lib/libperfuse/perfuse.c: revision 1.37
Deal with limits properly.
Don't print strerror() 2ice.
XXX: pullup-7

Revision 1.37 / (download) - annotate - [select for diffs], Fri Jun 19 17:33:20 2015 UTC (7 years, 7 months ago) by christos
Branch: MAIN
CVS Tags: pgoyette-localcount-base, pgoyette-localcount-20160806, pgoyette-localcount-20160726, localcount-20160914
Branch point for: pgoyette-localcount
Changes since 1.36: +24 -14 lines
Diff to previous 1.36 (colored)

Deal with limits properly.
Don't print strerror() 2ice.
XXX: pullup-7

Revision 1.25.2.6 / (download) - annotate - [select for diffs], Fri Feb 27 20:21:02 2015 UTC (7 years, 11 months ago) by martin
Branch: netbsd-6
Changes since 1.25.2.5: +10 -1 lines
Diff to previous 1.25.2.5 (colored) to branchpoint 1.25 (colored) next main 1.26 (colored)

Pull up following revision(s) (requested by manu in ticket #1260):
	lib/libpuffs/puffs.3: revision 1,55,1.60
	sys/fs/puffs/puffs_msgif.h: revision 1.84
	lib/libperfuse/ops.c: revision 1.83
	sys/fs/puffs/puffs_sys.h: revision 1.89
	sys/fs/puffs/puffs_vfsops.c: revision 1.116
	lib/libperfuse/perfuse.c: revision 1.36
	sys/fs/puffs/puffs_vnops.c: revision 1.200-1.202

Use more markup. New sentence, new line. Bump date for previous.

Add PUFFS_KFLAG_NOFLUSH_META to prevent sending metadata flush to FUSE
FUSE filesystems do not expect to get metadata updates for [amc]time
and size, they updates the value on their own after operations.

The PUFFS PUFFS_KFLAG_NOFLUSH_META option prevents regular metadata cache
flushes to the filesystem , and libperfuse uses it to match Linux FUSE
behavior.

While there, fix a bug in SETATTR: do not update kernel metadata cache
from SETATTR reply when the request is asynchronous, as we do not have
the reply yet.

Update file size after write without metadata flush
If we do not use metadata flush, we must make sure the size is updated
in the filesystem after a write, otherwise the next GETATTR will get us
a stale value and the file will be truncated.

Revision 1.31.10.4 / (download) - annotate - [select for diffs], Fri Feb 27 19:39:56 2015 UTC (7 years, 11 months ago) by martin
Branch: netbsd-7
CVS Tags: netbsd-7-0-RC2, netbsd-7-0-RC1
Changes since 1.31.10.3: +10 -1 lines
Diff to previous 1.31.10.3 (colored) to branchpoint 1.31 (colored)

Pull up following revision(s) (requested by manu in ticket #555):
	lib/libpuffs/puffs.3: revision 1.60
	sys/fs/puffs/puffs_msgif.h: revision 1.84
	lib/libperfuse/ops.c: revision 1.83
	sys/fs/puffs/puffs_sys.h: revision 1.89
	sys/fs/puffs/puffs_vfsops.c: revision 1.116
	lib/libperfuse/perfuse.c: revision 1.36
	sys/fs/puffs/puffs_vnops.c: revision 1.200-1.202

Add PUFFS_KFLAG_NOFLUSH_META to prevent sending metadata flush to FUSE

FUSE filesystems do not expect to get metadata updates for [amc]time
and size, they updates the value on their own after operations.

The PUFFS PUFFS_KFLAG_NOFLUSH_META option prevents regular metadata cache
flushes to the filesystem , and libperfuse uses it to match Linux FUSE
behavior.

While there, fix a bug in SETATTR: do not update kernel metadata cache
from SETATTR reply when the request is asynchronous, as we do not have
the reply yet.

Update file size after write without metadata flush
If we do not use metadata flush, we must make sure the size is updated
in the filesystem after a write, otherwise the next GETATTR will get us
a stale value and the file will be truncated.

Revision 1.36 / (download) - annotate - [select for diffs], Sun Feb 15 20:21:29 2015 UTC (7 years, 11 months ago) by manu
Branch: MAIN
Changes since 1.35: +10 -1 lines
Diff to previous 1.35 (colored)

Add PUFFS_KFLAG_NOFLUSH_META to prevent sending metadata flush to FUSE

FUSE filesystems do not expect to get metadata updates for [amc]time
and size, they updates the value on their own after operations.

The PUFFS PUFFS_KFLAG_NOFLUSH_META option prevents regular metadata cache
flushes to the filesystem , and libperfuse uses it to match Linux FUSE
behavior.

While there, fix a bug in SETATTR: do not update kernel metadata cache
from SETATTR reply when the request is asynchronous, as we do not have
the reply yet.

Revision 1.31.10.3 / (download) - annotate - [select for diffs], Wed Nov 5 18:11:30 2014 UTC (8 years, 3 months ago) by snj
Branch: netbsd-7
Changes since 1.31.10.2: +4 -1 lines
Diff to previous 1.31.10.2 (colored) to branchpoint 1.31 (colored)

Pull up following revision(s) (requested by manu in ticket #181):
	lib/libperfuse/fuse.h: revision 1.6
	lib/libperfuse/ops.c: revision 1.78
	lib/libperfuse/perfuse.c: revision 1.35
	lib/libperfuse/perfuse_priv.h: revision 1.36
	lib/libpuffs/dispatcher.c: revision 1.48
	lib/libpuffs/opdump.c: revision 1.37
	lib/libpuffs/puffs.c: revision 1.118
	lib/libpuffs/puffs.h: revision 1.126
	lib/libpuffs/puffs_ops.3: revisions 1.40-1.41
	sys/fs/puffs/puffs_msgif.h: revision 1.82-1.83
	sys/fs/puffs/puffs_msgif.h: revision 1.82
	sys/fs/puffs/puffs_vnops.c: revision 1.196
Add PUFFS support for fallocate and fdiscard operations
--
libpuffs support for fallocate and fdiscard operations
--
Add PUFFS_HAVE_FALLOCATE in puffs_msgif.h so that filesystem can decide
at build time wether fallocate is usable
--
FUSE fallocate support
There seems to be no fdiscard FUSE operation at the moment, hence that
one is left unused.

Revision 1.25.2.5 / (download) - annotate - [select for diffs], Mon Nov 3 19:37:58 2014 UTC (8 years, 3 months ago) by msaitoh
Branch: netbsd-6
Changes since 1.25.2.4: +2 -1 lines
Diff to previous 1.25.2.4 (colored) to branchpoint 1.25 (colored)

Pull up following revision(s) (requested by manu in ticket #1147):
	lib/libperfuse/perfuse.c: revision 1.34
	lib/libperfuse/ops.c: revision 1.71
Improve POSIX compliance of FUSE filesystems through PERUSE
- access denied is EPERM and not EACCES
- access to file owned by someone else in a sticy-bit directory should
  be allowed for the sticy-bit directory owner
- setting sticky-bit on a non directory should produce EFTYPE
- implement PATHCONF method as much as we can.

Revision 1.25.2.4 / (download) - annotate - [select for diffs], Mon Nov 3 19:18:09 2014 UTC (8 years, 3 months ago) by msaitoh
Branch: netbsd-6
Changes since 1.25.2.3: +4 -5 lines
Diff to previous 1.25.2.3 (colored) to branchpoint 1.25 (colored)

Pull up following revision(s) (requested by manu in ticket #1140):
	lib/libperfuse/ops.c				1.63-1.69
	lib/libperfuse/perfuse.c			1.32-1.33
	lib/libperfuse/perfuse_priv.h			1.32-1.34
	lib/libperfuse/subr.c				1.20
	lib/libpuffs/creds.c				1.16
	lib/libpuffs/dispatcher.c			1.47
	lib/libpuffs/puffs.h				1.125
	lib/libpuffs/puffs_ops.3			1.37-1.38
	lib/libpuffs/requests.c				1.24
	sys/fs/puffs/puffs_msgif.h			1.81
	sys/fs/puffs/puffs_sys.h			1.85
	sys/fs/puffs/puffs_vnops.c			1.183
	usr.sbin/perfused/msg.c				1.22
Bring libpuffs, libperfuse and perfused on par with -current:
- implement  FUSE direct I/O
- remove useless code and warnings
- fix missing GETATTR bugs
- fix exended attribute get and list operations

Revision 1.35 / (download) - annotate - [select for diffs], Fri Oct 31 15:12:15 2014 UTC (8 years, 3 months ago) by manu
Branch: MAIN
Changes since 1.34: +4 -1 lines
Diff to previous 1.34 (colored)

FUSE fallocate support
There seems to be no fdiscard FUSE operation at the moment, hence that one
is left unused.

Revision 1.31.10.2 / (download) - annotate - [select for diffs], Thu Sep 11 12:17:10 2014 UTC (8 years, 4 months ago) by martin
Branch: netbsd-7
Changes since 1.31.10.1: +2 -1 lines
Diff to previous 1.31.10.1 (colored) to branchpoint 1.31 (colored)

Pull up following revision(s) (requested by manu in ticket #86):
	lib/libperfuse/perfuse.c: revision 1.34
	lib/libperfuse/ops.c: revision 1.71
Improve POSIX compliance of FUSE filesystems through PERDUSE
- access denied is EPERM and not EACCES
- access to file owned by someone else in a sticy-bit directory should
  be allowed for the sticy-bit directory owner
- setting sticky-bit on a non directory should produce EFTYPE
- implement PATHCONF method as much as we can.

Revision 1.34 / (download) - annotate - [select for diffs], Wed Sep 3 16:01:45 2014 UTC (8 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.33: +2 -1 lines
Diff to previous 1.33 (colored)

Improve POSIX compliance of FUSE filesystems through PERUSE
- access denied is EPERM and not EACCES
- access to file owned by someone else in a sticy-bit directory should
  be allowed for the sticy-bit directory owner
- setting sticky-bit on a non directory should produce EFTYPE
- implement PATHCONF method as much as we can.

Revision 1.31.10.1 / (download) - annotate - [select for diffs], Sun Aug 24 08:42:06 2014 UTC (8 years, 5 months ago) by martin
Branch: netbsd-7
Changes since 1.31: +4 -5 lines
Diff to previous 1.31 (colored)

Pull up following revision(s) (requested by manu in ticket #52):
	lib/libperfuse/perfuse_priv.h: revision 1.33
	lib/libperfuse/ops.c: revision 1.67
	lib/libpuffs/dispatcher.c: revision 1.47
	lib/libperfuse/perfuse_priv.h: revision 1.34
	lib/libperfuse/ops.c: revision 1.68
	lib/libperfuse/ops.c: revision 1.69
	lib/libpuffs/puffs_ops.3: revision 1.37
	lib/libpuffs/puffs_ops.3: revision 1.38
	lib/libperfuse/perfuse.c: revision 1.32
	lib/libperfuse/perfuse.c: revision 1.33
	usr.sbin/perfused/msg.c: revision 1.22
	lib/libpuffs/puffs.h: revision 1.125
Implement FUSE direct I/O.
Remove useless code and warnings

Revision 1.33 / (download) - annotate - [select for diffs], Sat Aug 16 16:31:15 2014 UTC (8 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.32: +1 -5 lines
Diff to previous 1.32 (colored)

Removed unimplemented mmap and seek method. seek's declaration caused
seek request to be passed backand forth between kernel and userland
while we did nothing about them.

Revision 1.32 / (download) - annotate - [select for diffs], Sat Aug 16 16:28:43 2014 UTC (8 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.31: +4 -1 lines
Diff to previous 1.31 (colored)

Use just introduced open2 PUFFS method and its PUFFS_OPEN_IO_DIRECT oflag
to implement FUSE's OPEN_IO_DIRECT, by which the filesystem tells the kernel
that read/write to the file should bypass the page cache.

Remove a warning about read beyond EOF which will now normally appear when
page cache is bypassed.

Revision 1.25.2.2.2.1 / (download) - annotate - [select for diffs], Thu Nov 1 16:44:57 2012 UTC (10 years, 3 months ago) by matt
Branch: matt-nb6-plus
Changes since 1.25.2.2: +3 -4 lines
Diff to previous 1.25.2.2 (colored) next main 1.25.2.3 (colored)

sync with netbsd-6-0-RELEASE.

Revision 1.23.2.3 / (download) - annotate - [select for diffs], Tue Oct 30 18:59:14 2012 UTC (10 years, 3 months ago) by yamt
Branch: yamt-pagecache
CVS Tags: yamt-pagecache-tag8
Changes since 1.23.2.2: +68 -3 lines
Diff to previous 1.23.2.2 (colored) to branchpoint 1.23 (colored) next main 1.24 (colored)

sync with head

Revision 1.25.2.3 / (download) - annotate - [select for diffs], Thu Sep 13 22:31:03 2012 UTC (10 years, 4 months ago) by riz
Branch: netbsd-6
CVS Tags: netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, matt-nb6-plus-nbase, matt-nb6-plus-base
Changes since 1.25.2.2: +2 -3 lines
Diff to previous 1.25.2.2 (colored) to branchpoint 1.25 (colored)

Pull up following revision(s) (requested by manu in ticket #554):
	lib/libperfuse/perfuse.c: revision 1.31
Turn a fatal error into a warning.

Revision 1.31 / (download) - annotate - [select for diffs], Mon Sep 10 13:56:18 2012 UTC (10 years, 4 months ago) by manu
Branch: MAIN
CVS Tags: yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, netbsd-7-base, agc-symver-base, agc-symver
Branch point for: netbsd-7
Changes since 1.30: +3 -4 lines
Diff to previous 1.30 (colored)

Turn a fatal error into a warning.

Revision 1.25.2.2 / (download) - annotate - [select for diffs], Sun Aug 12 13:13:20 2012 UTC (10 years, 5 months ago) by martin
Branch: netbsd-6
CVS Tags: netbsd-6-0-RC1
Branch point for: matt-nb6-plus
Changes since 1.25.2.1: +68 -2 lines
Diff to previous 1.25.2.1 (colored) to branchpoint 1.25 (colored)

Pull up following revision(s) (requested by manu in ticket #438):
	lib/libperfuse/perfuse_priv.h: revision 1.31
	sys/fs/puffs/puffs_msgif.h: revision 1.80
	sys/fs/puffs/puffs_vnops.c: revision 1.171
	lib/libpuffs/puffs_ops.3: revision 1.31
	sys/fs/puffs/puffs_vnops.c: revision 1.172
	sys/fs/puffs/puffs_vnops.c: revision 1.173
	sys/fs/puffs/puffs_vnops.c: revision 1.174
	usr.sbin/perfused/perfused.c: revision 1.24
	sys/fs/puffs/puffs_sys.h: revision 1.80
	sys/fs/puffs/puffs_sys.h: revision 1.81
	sys/fs/puffs/puffs_sys.h: revision 1.82
	lib/libperfuse/subr.c: revision 1.19
	lib/libperfuse/perfuse.c: revision 1.30
	sys/fs/puffs/puffs_msgif.c: revision 1.90
	sys/fs/puffs/puffs_msgif.c: revision 1.91
	sys/fs/puffs/puffs_msgif.c: revision 1.92
	lib/libperfuse/ops.c: revision 1.59
	lib/libpuffs/puffs.3: revision 1.53
	lib/libperfuse/debug.c: revision 1.12
	lib/libpuffs/puffs.3: revision 1.54
	sys/fs/puffs/puffs_vnops.c: revision 1.167
	sys/fs/puffs/puffs_msgif.h: revision 1.79
	usr.sbin/perfused/msg.c: revision 1.21
	sys/fs/puffs/puffs_vfsops.c: revision 1.102
	sys/fs/puffs/puffs_vfsops.c: revision 1.103
	sys/fs/puffs/puffs_vfsops.c: revision 1.105
	lib/libpuffs/puffs.h: revision 1.123
	lib/libperfuse/perfuse_if.h: revision 1.20
	lib/libperfuse/perfuse.c: revision 1.29
	lib/libpuffs/dispatcher.c: revision 1.42
	lib/libpuffs/dispatcher.c: revision 1.43
- Fix same vnodes associated with multiple cookies
The scheme used to retreive known nodes on lookup was flawed, as it only
used parent and name. This produced a different cookie for the same file
if it was renamed, when looking up ../ or when dealing with multiple files
associated with the same name through link(2).
We therefore abandon the use of node name and introduce hashed lists of
inodes. This causes a huge rewrite of reclaim code, which do not attempt
to keep parents allocated until all their children are reclaimed
- Fix race conditions in reclaim
There are a few situations where we issue multiple FUSE operations for
a PUFFS operation. On reclaim, we therefore have to wait for all FUSE
operation to complete, not just the current exchanges. We do this by
introducing node reference count with node_ref() and node_rele().
- Detect data loss caused by FAF
VOP_PUTPAGES causes FAF writes where the kernel does not check the
operation result. At least issue a warning on error.
- Enjoy FAF shortcut on setattr
No need to wait for the result if the kernel does not want it. There is
however an exception for setattr that touch the size, we need to wait
for completion because we have other operations queued for after the
resize.
- Fix fchmod() on write-open file
fchmod() on a node open with write privilege will send setattr with both mode
and size set. This confuses some FUSE filesystem. Therefore we send two FUSE
operations, one for mode, and one for size.
- Remove node TTL handling for netbsd-5 for simplicity sake. The code
still builds on netbsd-5 but does not have the node TTL feature anymore.
It works fine with kernel support on netbsd-6.
- Improve PUFFS_KFLAG_CACHE_FS_TTL by reclaiming older inactive nodes.
The normal kernel behavior is to retain inactive nodes in the freelist
until it runs out of vnodes. This has some merit for local filesystems,
where the cost of an allocation is about the same as the cost of a
lookup. But that situation is not true for distributed filesystems.
On the other hand, keeping inactive nodes for a long time hold memory
in the file server process, and when the kernel runs out of vnodes, it
produce reclaim avalanches that increase lattency for other operations.
We do not reclaim inactive vnodes immediatly either, as they may be
looked up again shortly. Instead we introduce a grace time and we
reclaim nodes that have been inactive beyond the grace time.
- Fix lookup/reclaim race condition.
The above improvement undercovered a race condition between lookup and
reclaim. If we reclaimed a vnode associated with a userland cookie while
a lookup returning that same cookiewas inprogress, then the kernel ends
up with a vnode associated with a cookie that has been reclaimed in
userland. Next operation on the cookie will crash (or at least confuse)
the filesystem.
We fix this by introducing a lookup count in kernel and userland. On
reclaim, the kernel sends the count, which enable userland to detect
situation where it initiated a lookup that is not completed in kernel.
In such a situation, the reclaim must be ignored, as the node is about
to be looked up again.
Fix hang unmount bug introduced by last commit.
We introduced a slow queue for delayed reclaims, while the existing
queue for unmount, flush and exist has been renamed fast queue. Both
queues had timestamp for when an operation should be done, but it was
useless for the fast queue, which is always used to run an operation
ASAP. And the timestamp test had an error that turned ASAP into "at next
tick", but nobody what there to wake the thread at next tick, hence
the hang. The fix is to remove the useless and buggy timestamp test for
fast queue.
Rename slow sopreq queue into node sopreq queue, to refet the fact that
is only intended for postponed node reclaims.
When purging the node sopreq queue, do not call puffs_msg_sendresp(), as
it makes no sense.
Fix race condition between (create|mknod|mkdir|symlino) and reclaim, just
like we did it between lookup and reclaim.
Missing bit in previous commit (prevent race between create|mknod|mkdir|symlink
and reclaim)
Bump date for previous.
New sentence, new line; remove trailing whitespace; fix typos;
punctuation nits.
Add PUFFS_KFLAG_CACHE_DOTDOT so that vnodes hold a reference on their
parent, keeping them active, and allowing to lookup .. without sending
a request to the filesystem.
Enable the featuure for perfused, as this is how FUSE works.
Missing bit in previous commit (PUFFS_KFLAG_CACHE_DOTDOT option to avoid
looking up ..)

Revision 1.30 / (download) - annotate - [select for diffs], Fri Aug 10 16:49:36 2012 UTC (10 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.29: +9 -1 lines
Diff to previous 1.29 (colored)

Add PUFFS_KFLAG_CACHE_DOTDOT so that vnodes hold a reference on their
parent, keeping them active, and allowing to lookup .. without sending
a request to the filesystem.

Enable the featuure for perfused, as this is how FUSE works.

Revision 1.29 / (download) - annotate - [select for diffs], Sat Jul 21 05:49:42 2012 UTC (10 years, 6 months ago) by manu
Branch: MAIN
Changes since 1.28: +61 -3 lines
Diff to previous 1.28 (colored)

- Fix same vnodes associated with multiple cookies
The scheme used to retreive known nodes on lookup was flawed, as it only
used parent and name. This produced a different cookie for the same file
if it was renamed, when looking up ../ or when dealing with multiple files
associated with the same name through link(2).

We therefore abandon the use of node name and introduce hashed lists of
inodes. This causes a huge rewrite of reclaim code, which do not attempt
to keep parents allocated until all their children are reclaimed

- Fix race conditions in reclaim
There are a few situations where we issue multiple FUSE operations for
a PUFFS operation. On reclaim, we therefore have to wait for all FUSE
operation to complete, not just the current exchanges. We do this by
introducing node reference count with node_ref() and node_rele().

- Detect data loss caused by FAF
VOP_PUTPAGES causes FAF writes where the kernel does not check the
operation result. At least issue a warning on error.

- Enjoy FAF shortcut on setattr
No need to wait for the result if the kernel does not want it. There is
however an exception for setattr that touch the size, we need to wait
for completion because we have other operations queued for after the
resize.

- Fix fchmod() on write-open file
fchmod() on a node open with write privilege will send setattr with both mode and size set. This confuses some FUSE filesystem. Therefore we send two FUSE operations, one for mode, and one for size.

- Remove node TTL handling for netbsd-5 for simplicity sake. The code
still builds on netbsd-5 but does not have the node TTL feature anymore.
It works fine with kernel support on netbsd-6.

Revision 1.23.2.2 / (download) - annotate - [select for diffs], Wed May 23 10:07:32 2012 UTC (10 years, 8 months ago) by yamt
Branch: yamt-pagecache
Changes since 1.23.2.1: +15 -27 lines
Diff to previous 1.23.2.1 (colored) to branchpoint 1.23 (colored)

sync with head.

Revision 1.25.2.1 / (download) - annotate - [select for diffs], Mon Apr 23 16:48:59 2012 UTC (10 years, 9 months ago) by riz
Branch: netbsd-6
Changes since 1.25: +47 -60 lines
Diff to previous 1.25 (colored)

Pull up following revision(s) (requested by manu in ticket #195):
	lib/libskey/skeysubr.c: revision 1.27
	lib/libkvm/kvm_getloadavg.c: revision 1.11
	lib/libwrap/update.c: revision 1.9
	lib/liby/yyerror.c: revision 1.9
	lib/libpuffs/puffs_ops.3: revision 1.30
	lib/libwrap/misc.c: revision 1.10
	lib/libwrap/hosts_access.c: revision 1.20
	lib/libpuffs/pnode.c: revision 1.11
	lib/libperfuse/subr.c: revision 1.17
	lib/libpuffs/pnode.c: revision 1.12
	lib/libperfuse/subr.c: revision 1.18
	lib/libwrap/options.c: revision 1.15
	lib/libwrap/fix_options.c: revision 1.11
	lib/libperfuse/ops.c: revision 1.52
	lib/libperfuse/ops.c: revision 1.53
	lib/libperfuse/ops.c: revision 1.54
	lib/libwrap/hosts_ctl.c: revision 1.5
	lib/libintl/gettext.c: revision 1.27
	lib/libwrap/shell_cmd.c: revision 1.6
	lib/libpuffs/dispatcher.c: revision 1.39
	lib/libperfuse/perfuse_priv.h: revision 1.27
	lib/libwrap/socket.c: revision 1.19
	lib/libpuffs/puffs.3: revision 1.50
	lib/libperfuse/perfuse_priv.h: revision 1.28
	lib/libpuffs/puffs_priv.h: revision 1.45
	lib/libpuffs/puffs.3: revision 1.51
	lib/libperfuse/perfuse_priv.h: revision 1.29
	lib/libwrap/percent_x.c: revision 1.5
	lib/libpuffs/puffs.3: revision 1.52
	lib/libperfuse/debug.c: revision 1.11
	sys/fs/puffs/puffs_vnops.c: revision 1.165
	lib/libwrap/tcpd.h: revision 1.13
	sys/fs/puffs/puffs_vnops.c: revision 1.166
	lib/libwrap/eval.c: revision 1.7
	sys/fs/puffs/puffs_msgif.h: revision 1.78
	sys/fs/puffs/puffs_vfsops.c: revision 1.101
	lib/libwrap/rfc931.c: revision 1.9
	lib/libwrap/clean_exit.c: revision 1.5
	lib/libpuffs/puffs.h: revision 1.120
	lib/libc/stdlib/jemalloc.c: revision 1.27
	lib/librmt/rmtlib.c: revision 1.26
	lib/libpuffs/puffs.h: revision 1.121
	sys/fs/puffs/puffs_sys.h: revision 1.79
	lib/librumpclient/rumpclient.c: revision 1.48
	lib/libwrap/refuse.c: revision 1.5
	lib/libperfuse/perfuse.c: revision 1.26
	lib/libperfuse/perfuse.c: revision 1.27
	tests/fs/puffs/t_fuzz.c: revision 1.5
	lib/libperfuse/perfuse.c: revision 1.28
	lib/libpuffs/dispatcher.c: revision 1.40
	sys/fs/puffs/puffs_node.c: revision 1.24
	lib/libwrap/diag.c: revision 1.9
	lib/libintl/textdomain.c: revision 1.13
Use C89 function definition
Add name and atttribute cache with filesytem provided TTL.
lookup, create, mknod, mkdir, symlink, getattr and setattr messages
have been extended so that attributes and their TTL can be provided
by the filesytem. lookup, create, mknod, mkdir, and symlink messages
are also extended so that the filesystem can provide name TTL.
Add PUFFS_KFLAG_CACHE_FS_TTL flag to puffs_init(3) to use name and
attribute cache with filesystem provided TTL.
lookup, create, mknod, mkdir, symlink, getattr and setattr messages
have been extended so that attributes and their TTL can be provided
by the filesytem. lookup, create, mknod, mkdir, and symlink messages
are also extended so that the filesystem can provide name TTL.
The filesystem updates attributes and TTL using
puffs_pn_getvap(3), puffs_pn_getvattl(3), and puffs_pn_getcnttl(3)
Use new PUFFS_KFLAG_CACHE_FS_TTL option to puffs_init(3) so that
FUSE TTL on name and attributes are used. This save many PUFFS
operations and improves performances.
PUFFS_KFLAG_CACHE_FS_TTL is #ifdef'ed in many places for now so that
libperfuse can still be used on netbsd-5.
Split file system.
Comma fixes.
Remove dangling "and".
Bump date for previous.
- Makesure update_va does not change vnode size when it should not. For
instance when doing a fault-issued VOP_GETPAGES within VOP_WRITE, changing
size leads to panic: genfs_getpages: past eof.
-Handle ticks wrap around for vnode name andattribute timeout
- When using PUFFS_KFLAG_CACHE_FS_TTL, do not use puffs_node to carry
  attribute and TTL fora newly created node. Instead extend puffs_newinfo
  and add puffs_newinfo_setva() and puffs_newinfo_setttl()
- Remove node_mk_common_final in libperfuse. It used to set uid/gid for
  a newly created vnode but has been made redundant along time ago since
  uid and gid are properly set in FUSE header.
- In libperfuse, check for corner case where opc = 0 on INACTIVE and   RECLAIM
(how is it possible? Check for it to avoid a crash anyway)
- In libperfuse, make sure we unlimit RLIMIT_AS and RLIMIT_DATA so that
  we do notrun out of memory because the kernel is lazy at reclaiming vnodes.
- In libperfuse, cleanup style of perfuse_destroy_pn()
Do not set PUFFS_KFLAG_CACHE_FS_TTL for PUFFS tests

Revision 1.28 / (download) - annotate - [select for diffs], Wed Apr 18 00:57:22 2012 UTC (10 years, 9 months ago) by manu
Branch: MAIN
CVS Tags: yamt-pagecache-base5
Changes since 1.27: +15 -27 lines
Diff to previous 1.27 (colored)

- When using PUFFS_KFLAG_CACHE_FS_TTL, do not use puffs_node to carry
  attribute and TTL fora newly created node. Instead extend puffs_newinfo
  and add puffs_newinfo_setva() and puffs_newinfo_setttl()
- Remove node_mk_common_final in libperfuse. It used to set uid/gid for
  a newly created vnode but has been made redundant along time ago since
  uid and gid are properly set in FUSE header.
- In libperfuse, check for corner case where opc = 0 on INACTIVE and   RECLAIM (how is it possible? Check for it to avoid a crash anyway)
- In libperfuse, make sure we unlimit RLIMIT_AS and RLIMIT_DATA so that
  we do notrun out of memory because the kernel is lazy at reclaiming vnodes.
- In libperfuse, cleanup style of perfuse_destroy_pn()

Revision 1.23.2.1 / (download) - annotate - [select for diffs], Tue Apr 17 00:05:30 2012 UTC (10 years, 9 months ago) by yamt
Branch: yamt-pagecache
Changes since 1.23: +36 -34 lines
Diff to previous 1.23 (colored)

sync with head

Revision 1.27 / (download) - annotate - [select for diffs], Sun Apr 8 15:13:06 2012 UTC (10 years, 10 months ago) by manu
Branch: MAIN
CVS Tags: yamt-pagecache-base4
Changes since 1.26: +21 -3 lines
Diff to previous 1.26 (colored)

Use new PUFFS_KFLAG_CACHE_FS_TTL option to puffs_init(3) so that
FUSE TTL on name and attributes are used. This save many PUFFS
operations and improves performances.

PUFFS_KFLAG_CACHE_FS_TTL is #ifdef'ed in many places for now so that
libperfuse can still be used on netbsd-5.

Revision 1.26 / (download) - annotate - [select for diffs], Wed Mar 21 10:10:36 2012 UTC (10 years, 10 months ago) by matt
Branch: MAIN
Changes since 1.25: +13 -32 lines
Diff to previous 1.25 (colored)

Use C89 function definition

Revision 1.25 / (download) - annotate - [select for diffs], Fri Feb 3 15:54:15 2012 UTC (11 years ago) by manu
Branch: MAIN
CVS Tags: netbsd-6-base
Branch point for: netbsd-6
Changes since 1.24: +3 -1 lines
Diff to previous 1.24 (colored)

Make sure perfused exit when the filesystem crashed, so that unmount
is done. Failure to do so caused deadlocks, with operation that
held a lock on the root vnode and got stuck in perfused forever.

Approved by releng.

Revision 1.24 / (download) - annotate - [select for diffs], Wed Dec 28 17:33:53 2011 UTC (11 years, 1 month ago) by manu
Branch: MAIN
Changes since 1.23: +2 -1 lines
Diff to previous 1.23 (colored)

Add a FUSE trace facility, with statistics collection. This should help
tracking bugs and performance issues

Revision 1.23 / (download) - annotate - [select for diffs], Sun Oct 30 05:11:37 2011 UTC (11 years, 3 months ago) by manu
Branch: MAIN
CVS Tags: yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base
Branch point for: yamt-pagecache
Changes since 1.22: +9 -5 lines
Diff to previous 1.22 (colored)

- Fix the confusion between fileno (opaque FUSE reference) and inode
  numbers. fileno must be used when exchanging FUSE messages.
- Do not use kernel name cache anymore, as it caused modification from
  other machines to be invisible.
- Honour name and attribute cache directive from FUSE filesystem

Revision 1.22 / (download) - annotate - [select for diffs], Sun Oct 23 05:01:00 2011 UTC (11 years, 3 months ago) by manu
Branch: MAIN
Changes since 1.21: +18 -1 lines
Diff to previous 1.21 (colored)

perfuse memory usage can grow quite large when using a lot of vnodes,
and the amount of data memory involved is not easy to forcast. We therefore
raise the limit to the maximum.

Patch from Manuel Bouyer. It helps completing a cvs update on a glusterfs
colume.

Revision 1.21 / (download) - annotate - [select for diffs], Tue Oct 18 15:47:32 2011 UTC (11 years, 3 months ago) by manu
Branch: MAIN
Changes since 1.20: +1 -8 lines
Diff to previous 1.20 (colored)

mlockall is not necessary after all, once we have fixed a kernel bug involving
agedaemon sleeping form memory

Revision 1.20 / (download) - annotate - [select for diffs], Fri Sep 9 22:51:44 2011 UTC (11 years, 5 months ago) by christos
Branch: MAIN
Changes since 1.19: +3 -11 lines
Diff to previous 1.19 (colored)

make this build on amd64 and remove redundant and unused code.

Revision 1.19 / (download) - annotate - [select for diffs], Fri Sep 9 15:35:22 2011 UTC (11 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.18: +9 -1 lines
Diff to previous 1.18 (colored)

Make sure perfused remains locked in memory, otherwise we can get
deadlocks in low memory situations, where ioflush waits for perfused
to fsync vnodes, and perfused waits for memory to be freed.

Revision 1.18 / (download) - annotate - [select for diffs], Sat Aug 13 23:12:15 2011 UTC (11 years, 5 months ago) by christos
Branch: MAIN
Changes since 1.17: +10 -10 lines
Diff to previous 1.17 (colored)

- fix warn/err confusiog
- fix debugging printf
- add func arguments to simple formats

Revision 1.17 / (download) - annotate - [select for diffs], Tue Aug 9 06:58:33 2011 UTC (11 years, 6 months ago) by manu
Branch: MAIN
Changes since 1.16: +20 -2 lines
Diff to previous 1.16 (colored)

Remove PUFFS_KFLAG_WTCACHE, which caused data corruption and slowdown

Revision 1.16 / (download) - annotate - [select for diffs], Tue Jun 28 16:19:16 2011 UTC (11 years, 7 months ago) by manu
Branch: MAIN
Changes since 1.15: +8 -1 lines
Diff to previous 1.15 (colored)

Add support for extended attributes

Revision 1.15 / (download) - annotate - [select for diffs], Mon May 30 14:50:08 2011 UTC (11 years, 8 months ago) by manu
Branch: MAIN
CVS Tags: cherry-xenmp-base, cherry-xenmp
Changes since 1.14: +24 -11 lines
Diff to previous 1.14 (colored)

Use SOCK_SEQPACKET in perfuse if available. This fix file operations hangs
where the FUSE filesyste replied to an operation and got an ENOBUFS it did
not handle.

We now are also able to cleanly unmount

Revision 1.14 / (download) - annotate - [select for diffs], Wed May 18 15:25:19 2011 UTC (11 years, 8 months ago) by manu
Branch: MAIN
Changes since 1.13: +5 -5 lines
Diff to previous 1.13 (colored)

Set buffer size as big in nomal mode as we do in debug mode, when
perfused stays in foreground. The difference is a mistake and was not
intended.

There is still a bug ready to bite here, since SOCK_STREAM is not reliable.
We just hope that buffers are big enough to hold all packets, but if they
are overflown, we loose a packet and a file operation gets stuck.

We really nee SOCk_SEQPACKET here, but unfortunately it is very broken at
that time.

Revision 1.13 / (download) - annotate - [select for diffs], Thu May 12 10:32:41 2011 UTC (11 years, 8 months ago) by manu
Branch: MAIN
Changes since 1.12: +30 -7 lines
Diff to previous 1.12 (colored)

Mont FUSE filesystem with proprer source and fstype so that df and mount
display something that makes sense

Revision 1.12 / (download) - annotate - [select for diffs], Mon Apr 25 04:54:53 2011 UTC (11 years, 9 months ago) by manu
Branch: MAIN
Changes since 1.11: +58 -14 lines
Diff to previous 1.11 (colored)

- Implement proper unprivilegied user permission verifications
Verification is now done in the lookup method, as it is the way to
go. Of course there are corner cases, such as the sticky bit which
need special handling in the remove method.

- Set full fsidx in vftstat method

- Do not pass O_APPEND to the filesystem. FUSE always sends the
write offset, so setting O_APPEND is useless. If the filesystem
uses it in an open(2) system call, it will even cause file
corruptions, since offsets given to pwrite(2) will be ignored.
This fix allows glusterfs to host a NetBSD ./build.sh -o build

- Do not use the FUSE access method, use getattr and check for
permission on our own. The problem is that a FUSE filesystem will
typically use the Linux-specific setfsuid() to perform access
control. If that is missing, any chack is likely to occur on
behalf of the user running the filesystem (typically root), causing
access method to return wrong information.

- When possible, avoid performing a getattr method call and use
cached value in puffs_node instead. We still retreive the latest
value by calling getattr when performing append write operation,
to minimize the chances that another writer appended since the
last time we did.

- Update puffs_node cached file size in write method

- Remove unused argument to perfuse_destroy_pn()

Revision 1.11 / (download) - annotate - [select for diffs], Mon Oct 11 05:37:58 2010 UTC (12 years, 3 months ago) by manu
Branch: MAIN
CVS Tags: matt-mips64-premerge-20101231, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2
Changes since 1.10: +3 -7 lines
Diff to previous 1.10 (colored)

Remove code supporting SOCK_STREAM, as SOCK_DGRAM works fine

Revision 1.10 / (download) - annotate - [select for diffs], Sun Oct 3 05:46:47 2010 UTC (12 years, 4 months ago) by manu
Branch: MAIN
Changes since 1.9: +2 -6 lines
Diff to previous 1.9 (colored)

- Correctly handle rename whith overwritten destination
- Keep track of file name to avoid lookups when we can. This makes sure we
  do not have two cookies for the same inode, a situation that cause wreak
  havoc when we come to remove or rename a node.
- Do not use PUFFS_FLAG_BUILDPATH at all, since we now track file names
- In open, queue requests after checking for access, as there is no merit
  to queue a will-be-denied request while we can deny it immediatly
- request reclaim of removed nodes at inactive stage

Revision 1.9 / (download) - annotate - [select for diffs], Wed Sep 29 08:01:10 2010 UTC (12 years, 4 months ago) by manu
Branch: MAIN
Changes since 1.8: +6 -3 lines
Diff to previous 1.8 (colored)

= Open files =
- Restore open on our own in fsycn and readdir, as the node may not already
be open, and FUSE really wants it to be. No need to close immediatly, it
can be done at inactive time.

= Write operations =
- fix a nasty bug that corrupted files on write (written added twice)
- Keep track of file size in order to honour PUFFS_IO_APPEND

= many fixes in rename =
- handler overwritten nodes correctly
- wait for all operations on the node to drain before doing rename, as
filesystems may not cope with operations on a moving file.
- setback PUFFS_SETBACK_INACT_N1 cannot be used from rename, we therefore
miss the inactive time for an overwritten node. This bounds us to give up
PUFFS_KFLAG_IAONDEMAND.

= Removed files =
- forbid most operations on a removed node, return ENOENT
- setback PUFFS_SETBACK_NOREF_N1 at inactive stage to cause removed
file reclaim

= Misc =
- Update outdated ARGSUSED for lint
- Fix a memory leak (puffs_pn_remove instead of puffs_pn_put)
- Do not use PUFFS_FLAG_BUILDPATH except for debug output. It makes the
lookup code much simplier.

Revision 1.8 / (download) - annotate - [select for diffs], Thu Sep 23 16:02:34 2010 UTC (12 years, 4 months ago) by manu
Branch: MAIN
Changes since 1.7: +3 -2 lines
Diff to previous 1.7 (colored)

== file close operations ==
- use PUFFS_KFLAG_WTCACHE to puffs_init so that all writes are
immediatly send to the filesystem, and we do not have anymore write
after inactive. As a consequence, we can close files at inactive
stage, and there is not any concern left with files opened at
create time. We also do not have anymore to open ourselves in readdir and
fsync.

- Fsync on close (inactive stage). That makes sure we will not need to
do these operations once the file is closed (FUSE want an open file).
short sircuit the request that come after the close, bu not fsinc'ing
closed files,

- Use PUFFS_KFLAG_IAONDEMAND to get less inactive calls

== Removed nodes ==
- more ENOENT retunred for operations on removed node (but there
are probably some still missing): getattr, ooen, setattr, fsync

- set PND_REMOVE before sending the UNLINK/RMDIR operations so that we avoid
races during UNLINK completion. Also set PND_REMOVED on node we overwirte
in rename

== Filehandle fixes ==
- queue open operation to avoid getting two fh for one file

- set FH in getattr, if the file is open

- Just requires a read FH for fsyncdir, as we always opendir in read
mode. Ok, this is misleading :-)

== Misc ==
- do not set FUSE_FATTR_ATIME_NOW in setattr, as we provide the time

- short circuit nilpotent operations in setattr

- add a filename diagnostic flag to dump file names

Revision 1.7 / (download) - annotate - [select for diffs], Mon Sep 20 07:00:21 2010 UTC (12 years, 4 months ago) by manu
Branch: MAIN
Changes since 1.6: +12 -11 lines
Diff to previous 1.6 (colored)

- performance improvement for read, readdir and write. Now we use
SOCK_DGRAM, we can send many pages at once without hitting any bug

- when creating a file, it is open for FUSE, but not for the kernel.
If the kernel does not do a subsequent open, we have a leak. We fight
against this by trying to close such file that the kernel left unopen
for some time.

- some code refactoring to make message exchange debug easier (more to come)

Revision 1.6 / (download) - annotate - [select for diffs], Wed Sep 15 01:51:43 2010 UTC (12 years, 4 months ago) by manu
Branch: MAIN
Changes since 1.5: +126 -53 lines
Diff to previous 1.5 (colored)

- Use SOCK_DGRAM instead of SOCK_STREAM, as the filesystem seems to
assume datagram semantics: when using SOCK_STREAM, if perfused sends
frames faster than the filesystem consumes them, it will grab multiple
frames at once and discard anything beyond the first one. For now the
code can work both with SOCK_DGRAM and SOCK_STREAM, but SOCK_STREAM
support will probably have to be removed for the sake of readability.

- Remeber to sync parent directories when moving a node

- In debug output, display the requeue type (readdir, write, etc...)

Revision 1.5 / (download) - annotate - [select for diffs], Tue Sep 7 02:11:04 2010 UTC (12 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.4: +15 -31 lines
Diff to previous 1.4 (colored)

- Do not checkfor peer credentials when perfused is autostarted and
therefore runs with filesystem privileges

- shut up warnings and debug messages when perfused is autostarted

- make perfused patch modifiable with CFLAGS for easier pkgsrc integration

- Fix build warnings

Revision 1.4 / (download) - annotate - [select for diffs], Mon Sep 6 01:40:24 2010 UTC (12 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.3: +10 -10 lines
Diff to previous 1.3 (colored)

More LP64 fixes

Revision 1.3 / (download) - annotate - [select for diffs], Sat Aug 28 03:46:21 2010 UTC (12 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.2: +2 -1 lines
Diff to previous 1.2 (colored)

- set user/group ownership after object creation.

- enforce permissios checks. This needs to be  reviewed.

Revision 1.2 / (download) - annotate - [select for diffs], Fri Aug 27 09:58:17 2010 UTC (12 years, 5 months ago) by manu
Branch: MAIN
Changes since 1.1: +64 -15 lines
Diff to previous 1.1 (colored)

- if perfused is not already started (cannot connect to /dev/fuse),
FUSE filesystems will attempt to start it on their own, and will
communicate using a socketpair

- do not advertise NULL file handle as being valid when sending themback to the FUSE filesystem.

- unmount if we cannot talk to the FUSE process anymore

- set calling process gid properly

- debug message cleanup

Revision 1.1 / (download) - annotate - [select for diffs], Wed Aug 25 07:16:00 2010 UTC (12 years, 5 months ago) by manu
Branch: MAIN

libperfuse(3) is a PUFFS relay to FUSE. In order to use it,
FUSE filesystem must be patched to #include <perfuse.h> in the source
files that open /dev/fuse and perform the mount(2) system call. The
FUSE filesystem must be linked with -lperfuse.

libperfuse(3) implements the FUSE kernel interface, on which libfuse or
any FUSE filesystem that opens /dev/fuse directly can be used.

For now, an external daemon called perfused(8) is used. This may change
in the future.

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