Commit Graph

347 Commits

Author SHA1 Message Date
Jakob Unterwurzacher
863c3ca36f fusefrontend: rename write_lock.go -> open_file_table.go
The data structure was originally called write lock table, but
is now simply called the open file table. Rename the file to
reflect that.
2017-04-29 22:24:38 +02:00
Jakob Unterwurzacher
b66e03486a fusefronted: drop unused file.String() function
This is a very old leftover.
2017-04-29 18:20:39 +02:00
Jakob Unterwurzacher
edb3e19cb5 fix golint complaints 2017-04-29 14:50:58 +02:00
Jakob Unterwurzacher
3409ade272 forcedecode: tighten checks
...and fix a few golint issues and print a scary warning message on mount.

Also, force the fs to ro,noexec.
2017-04-24 00:25:02 +02:00
danim7
f1945c4daa Add -forcedecode
Force decode of encrypted files even if the integrity check fails, instead of
failing with an IO error. Warning messages are still printed to syslog if corrupted
files are encountered.
It can be useful to recover files from disks with bad sectors or other corrupted
media.

Closes https://github.com/rfjakob/gocryptfs/pull/102 .
2017-04-23 23:11:56 +02:00
Jakob Unterwurzacher
9777e4bf7e Fix Flock build breakage
go-fuse has added a new method to the nodefs.File interface that
caused this build error:

  internal/fusefrontend/file.go:75: cannot use file literal (type *file) as type nodefs.File in return argument:
  	*file does not implement nodefs.File (missing Flock method)

Fixes https://github.com/rfjakob/gocryptfs/issues/104 and
prevents the problem from happening again.
2017-04-23 00:06:56 +02:00
Jakob Unterwurzacher
778c955eea fusefrontend_reverse: switch to stable inode numbers
The volatile inode numbers that we used before cause "find" to complain and error out.
Virtual inode numbers are derived from their parent file inode number by adding 10^19,
which is hopefully large enough no never cause problems in practice.

If the backing directory contains inode numbers higher than that, stat() on these files
will return EOVERFLOW.

Example directory lising after this change:

  $ ls -i
               926473 gocryptfs.conf
  1000000000000926466 gocryptfs.diriv
               944878 gocryptfs.longname.hmZojMqC6ns47eyVxLlH2ailKjN9bxfosi3C-FR8mjA
  1000000000000944878 gocryptfs.longname.hmZojMqC6ns47eyVxLlH2ailKjN9bxfosi3C-FR8mjA.name
               934408 Tdfbf02CKsTaGVYnAsSypA
2017-04-01 17:19:15 +02:00
Jakob Unterwurzacher
cb47f65212 fusefrontend: get rid of leftover debug output 2017-03-18 16:48:28 +01:00
Jakob Unterwurzacher
00df0771e3 serialize_reads: add read serialization logic
Due to kernel readahead, we usually get multiple read requests
at the same time. These get submitted to the backing storage in
random order, which is a problem if seeking is very expensive.

Details: https://github.com/rfjakob/gocryptfs/issues/92
2017-03-18 16:18:00 +01:00
Jakob Unterwurzacher
14038a1644 fusefrontend: readFileID: reject files that consist only of a header
A header-only file will be considered empty (this is not supposed to happen).
This makes File ID poisoning more difficult.
2017-03-12 21:11:02 +01:00
Jakob Unterwurzacher
d36d53c9bb fusefrontend: truncateGrowFile: avoid createHeader() call
...if doWrite() can do it for us. This avoids the situation
that the file only consists of a file header when calling
doWrite.

A later patch will check for this condition and warn about it,
as with this change it should no longer occour in normal operation.
2017-03-12 21:06:59 +01:00
Jakob Unterwurzacher
445b5019e3 nametransform: fix Raw64 not affecting symlink targets
The symlink functions incorrectly hardcoded the padded
base64 variant.
2017-03-05 22:59:25 +01:00
Jakob Unterwurzacher
d0bc7970f7 full stack: implement HKDF support
...but keep it disabled by default for new filesystems.

We are still missing an example filesystem and CLI arguments
to explicitely enable and disable it.
2017-03-05 21:59:55 +01:00
Jakob Unterwurzacher
874e4fb5e9 cryptocore: rename "BackendTypeEnum" -> "AEADTypeEnum"
There are two independent backends, one for name encryption,
the other one, AEAD, for file content.

"BackendTypeEnum" only applies to AEAD (file content), so make that
clear in the name.
2017-03-05 17:10:57 +01:00
Jakob Unterwurzacher
e032539e2c cryptocore: use eme v1.1 interface
Version 1.1 of the EME package (github.com/rfjakob/eme) added
a more convenient interface. Use it.

Note that you have to upgrade your EME package (go get -u)!
2017-03-05 13:58:24 +01:00
Jakob Unterwurzacher
b2f3dbb8bd fusefrontend: when chown'ing a directory, also chown its diriv
When filename encryption is active, every directory contains
a "gocryptfs.diriv" file. This file should also change the owner.

Fixes https://github.com/rfjakob/gocryptfs/issues/86
2017-03-02 19:12:21 +01:00
Jakob Unterwurzacher
1273d7edae ctlsock: better error message for forward mode path decryption 2017-01-29 18:55:52 +01:00
Jakob Unterwurzacher
a7c7588deb fusefrontend: fix hard-linking with long name
This used to incorrectly try to link twice and return EEXIST.
2017-01-26 20:56:42 +01:00
Jakob Unterwurzacher
55df8acac3 fusefrontend: preserve owner for symlinks
https://github.com/rfjakob/gocryptfs/issues/64
2016-11-28 23:15:24 +01:00
Jakob Unterwurzacher
e3c5e3f1c8 fusefronted: preserve owner for device nodes and sockets
https://github.com/rfjakob/gocryptfs/issues/64
2016-11-28 23:09:47 +01:00
Jakob Unterwurzacher
a66440c668 fusefrontend: use Lchown when preserving owner
This prevents (unlikely) symlink race attacks
2016-11-28 22:46:04 +01:00
Jakob Unterwurzacher
0f8d3318a3 main, fusefrontend: add "-noprealloc" option
Preallocation is very slow on hdds that run btrfs. Give the
user the option to disable it. This greatly speeds up small file
operations but reduces the robustness against out-of-space errors.

Also add the option to the man page.

More info: https://github.com/rfjakob/gocryptfs/issues/63
2016-11-25 09:19:14 +01:00
Jakob Unterwurzacher
024511d9c7 fusefrontend: coalesce 4kB writes
This improves performance on hdds running ext4, and improves
streaming write performance on hdds running btrfs. Tar extract
slows down on btrfs for some reason.

See https://github.com/rfjakob/gocryptfs/issues/63

Benchmarks:

encfs v1.9.1
============

$ ./benchmark.bash -encfs /mnt/hdd-ext4
Testing EncFS at /mnt/hdd-ext4/benchmark.bash.u0g
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,48354 s, 88,4 MB/s
UNTAR: 20.79
LS:    3.04
RM:    6.62

$ ./benchmark.bash -encfs /mnt/hdd-btrfs
Testing EncFS at /mnt/hdd-btrfs/benchmark.bash.h40
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,52552 s, 85,9 MB/s
UNTAR: 24.51
LS:    2.73
RM:    5.32

gocryptfs v1.1.1-26-g4a7f8ef
============================

$ ./benchmark.bash /mnt/hdd-ext4
Testing gocryptfs at /mnt/hdd-ext4/benchmark.bash.1KG
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,55782 s, 84,1 MB/s
UNTAR: 22.23
LS:    1.47
RM:    4.17

$ ./benchmark.bash /mnt/hdd-btrfs
Testing gocryptfs at /mnt/hdd-btrfs/benchmark.bash.2t8
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 6,87206 s, 19,1 MB/s
UNTAR: 69.87
LS:    1.52
RM:    5.33

gocryptfs v1.1.1-32
===================

$ ./benchmark.bash /mnt/hdd-ext4
Testing gocryptfs at /mnt/hdd-ext4/benchmark.bash.Qt3
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,22577 s, 107 MB/s
UNTAR: 23.46
LS:    1.46
RM:    4.67

$ ./benchmark.bash /mnt/hdd-btrfs/
Testing gocryptfs at /mnt/hdd-btrfs//benchmark.bash.XVk
WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 3,68735 s, 35,5 MB/s
UNTAR: 116.87
LS:    1.84
RM:    6.34
2016-11-25 09:03:32 +01:00
Jakob Unterwurzacher
6f475da116 Fix golint warnings, add helper script 2016-11-17 23:40:03 +01:00
Jakob Unterwurzacher
0489d08ae2 fusefrontend: get the file ID from the open files table
This fixes the problem that a truncate can reset the file
ID without the other open FDs noticing it.
2016-11-17 22:29:45 +01:00
Jakob Unterwurzacher
e04dc05012 fusefrontend: upgrade wlockMap to use device AND inode number
If there are multiple filesystems backing the gocryptfs filesystems
inode numbers are not guaranteed to be unique.
2016-11-17 20:32:19 +01:00
Jakob Unterwurzacher
c03fc46a51 ctlsock: implement EncryptPath for reverse mode, add tests 2016-11-10 23:32:51 +01:00
Jakob Unterwurzacher
75ebb28a62 ctlsock: add initial limited implementation
At the moment, in forward mode you can only encrypt paths
and in reverse mode you can only decrypt paths.
2016-11-10 00:27:08 +01:00
Jakob Unterwurzacher
2b991c9743 Add support for unpadded base64 filenames, "-raw64"
Through base64.RawURLEncoding.

New command-line parameter "-raw64".
2016-11-01 18:43:22 +01:00
Jakob Unterwurzacher
c2192cfcad fusefrontend: drop atime workarounds
The fix at https://github.com/hanwen/go-fuse/pull/131 has been merged.
Drop the workarounds and re-enable the tests.
2016-10-30 16:29:36 +01:00
Jakob Unterwurzacher
85f1fd0b0f fusefronted: more concise corrupt block log message
Calculating the block offset is easy enough, even more now
that gocryptfs-xray exists.
2016-10-28 21:18:36 +02:00
Jakob Unterwurzacher
a08d55f42d fusefronted: optimize NFS streaming writes by saving one Stat()
Stat() calls are expensive on NFS as they need a full network
round-trip. We detect when a write immediately follows the
last one and skip the Stat in this case because the write
cannot create a file hole.

On my (slow) NAS, this takes the write speed from 24MB/s to
41MB/s.
2016-10-28 21:17:53 +02:00
Jakob Unterwurzacher
d64ccf7cf4 fusefrontend: move hole padding check out of Write()
The details of the hole handling don't have to be in
Write, so move it away.
2016-10-25 22:37:45 +02:00
Jakob Unterwurzacher
6538dc15af fusefrontend: rename "createsHole" to clearer "createsCiphertextHole"
...and add comments for what is happening.
2016-10-25 21:19:37 +02:00
Jakob Unterwurzacher
aeda9721d0 Fix misspellings
Close https://github.com/rfjakob/gocryptfs/issues/54
2016-10-24 19:18:13 +02:00
Jakob Unterwurzacher
589748548f tests: add 1980.tar.gz extract test
Test that we get the right timestamp when extracting a tarball.

Also simplify the workaround in doTestUtimesNano() and fix the
fact that it was running no test at all.
2016-10-19 22:25:54 +02:00
Jakob Unterwurzacher
600ceece35 lint fixes 2016-10-19 01:12:45 +02:00
Jakob Unterwurzacher
891a3b4c8a fusefrontend: Utimens: one more band-aid
Revert once https://github.com/hanwen/go-fuse/pull/131 is merged.
2016-10-16 20:20:00 +02:00
Jakob Unterwurzacher
5144470e3d fusefrontend: Utimens: ugly band-aid for nil pointer crash in go-fuse
Crash is described at https://github.com/rfjakob/gocryptfs/issues/48 .
Revert this once https://github.com/hanwen/go-fuse/pull/131 is merged.
2016-10-16 15:08:05 +02:00
Jakob Unterwurzacher
35219d0022 fusefrontend: log missing gocryptfs.diriv
This can happen during normal operation when the directory has
been deleted concurrently. But it can also mean that the
gocryptfs.diriv is missing due to an error, so log the event
at "info" level.
2016-10-16 15:04:59 +02:00
Jakob Unterwurzacher
828f718483 fusefrontend: Also preserve the owner in Mkdir
This already worked for files but was missing for dirs.
2016-10-10 08:53:29 +02:00
Jakob Unterwurzacher
f054353bd3 reverse: make gocryptfs.conf mapping plaintextnames-aware
Only in plaintextnames-mode AND with the config file at the
default location it will be mapped into the mountpoint.

Also adds a test for that.
2016-10-08 20:57:38 +02:00
Valient Gough
b764917cd5 lint fixes 2016-10-04 23:18:33 +02:00
Jakob Unterwurzacher
a2510efe12 reverse: use per-purpose nonce generation
Also pull all the deterministic nonce code into fusefrontend_reverse
to greatly simplify the normal code path.
2016-09-29 21:56:49 +02:00
Jakob Unterwurzacher
5f4b16c00f Implement changes proposed by gosimple.
Also delete the unused "dirIVNameStruct", found by deadcode.
2016-09-25 19:48:21 +02:00
Jakob Unterwurzacher
c7b3150afc nametransform: delete unused function DecryptPathDirIV 2016-09-25 18:56:23 +02:00
Jakob Unterwurzacher
abd61d968d contentenc: rename constant "IVBitLen" to "DefaultIVBits" and clarify comment
128-bit IVs are NOT used everywhere.
2016-09-25 18:40:29 +02:00
Jakob Unterwurzacher
12808138ef contentenc: add "ExternalNonce" mode
This will be used for strong symlink encryption in reverse mode.
2016-09-25 17:44:19 +02:00
Jakob Unterwurzacher
32e55261ca fusefrontend: handle Readlink directly
Calling into go-fuse's loopbackFileSystem does not add
any value here.
2016-09-25 17:01:39 +02:00
Jakob Unterwurzacher
5f726aaa9d contentenc: add GCM-SIV support
Also add ReverseDummyNonce nonce generation.
2016-09-25 16:43:17 +02:00
Jakob Unterwurzacher
7f87ed78f2 cryptocore: add support for GCM-SIV 2016-09-25 16:43:17 +02:00
Jakob Unterwurzacher
fca1b82417 fusefrontend: relay Utimens to go-fuse
Commit af5441dcd9 has caused a
regression ( https://github.com/rfjakob/gocryptfs/issues/35 )
that is fixed by this commit.

The go-fuse library by now has all the syscall wrappers in
place to correctly handle Utimens, also for symlinks.

Instead of duplicating the effort here just call into go-fuse.

Closes #35
2016-09-25 16:30:29 +02:00
Jakob Unterwurzacher
af5441dcd9 fusefrontend: use NsecToTimespec() for Utimens
This fixes a build problem on 32-bit hosts:

  internal/fusefrontend/file.go:400: cannot use a.Unix() (type int64) as
  type int32 in assignment
  internal/fusefrontend/file.go:406: cannot use m.Unix() (type int64) as
  type int32 in assignment

It also enables full nanosecond timestamps for dates
after 1970.
2016-08-09 22:18:46 +02:00
Jakob Unterwurzacher
e8a234f658 Add godoc comments to all internal packages 2016-07-06 21:51:25 +02:00
Jakob Unterwurzacher
741bf0726e syscallcompat: OSX: add Mknodat wrapper
Protip: find naked *at syscalls using:

   git grep "syscall." | grep "at(" | grep -v syscallcompat
2016-07-03 20:22:22 +02:00
Jakob Unterwurzacher
d8524c7369 syscallcompat: OSX: add Unlinkat wrapper
Also, replace remaining naked syscall.Openat calls.
2016-07-03 20:17:40 +02:00
Jakob Unterwurzacher
1d7728959c fusefrontend: downgrade Renameat log message to debug 2016-07-03 20:08:09 +02:00
Jakob Unterwurzacher
79851bf6cc syscallcompat: OSX: add Renamat wrapper
Adds a poor man's renameat implementation for OSX.
2016-07-03 20:05:32 +02:00
Jakob Unterwurzacher
9b725c15cf syscallcompat: OSX: add Fallocate and Openat wrappers
...and convert all calls to syscall.{Fallocate,Openat}
to syscallcompat .

Both syscalls are not available on OSX. We emulate Openat and just
return EOPNOTSUPP for Fallocate.
2016-07-03 19:18:34 +02:00
Jakob Unterwurzacher
c9a472c12f syscallcompat: move syscall wrapper to their own package
We will get more of them as OSX also lacks support for openat.
2016-07-03 17:51:40 +02:00
Jakob Unterwurzacher
e574a6cc1f nametransform: hide detailed padding error behind the debug flag
unPad16 returns detailed errors including the position of the
incorrect bytes. Kill a possible padding oracle by lumping
everything into a generic error.

The detailed error is only logged if debug is active.
2016-07-03 15:35:58 +02:00
Jakob Unterwurzacher
54470baa23 fusefrontend: add fallocate support
Mode=0 (default) and mode=1 (keep size) are supported.
The patch includes test cases and the whole thing passed xfstests.

Fixes https://github.com/rfjakob/gocryptfs/issues/1 .
2016-07-02 19:52:09 +02:00
Jakob Unterwurzacher
04ad063515 fusefronted: move Truncate() and Allocate() to their own file
These are large complicated implementations that will share some
code.
2016-07-02 15:35:06 +02:00
Jakob Unterwurzacher
7b22b426b9 contentenc: rename PlaintextRange and CiphertextRange
The name could be misunderstood and actually caused a bug:
doWrite used to always preallocate 4128 instead of the actual
data length.
2016-07-02 00:12:36 +02:00
Jakob Unterwurzacher
f2b4d57068 fusefrontend: coalesce grows in Truncate()
We were growing the file block-by-block which was pretty
inefficient. We now coalesce all the grows into a single
Ftruncate. Also simplifies the code!

Simplistic benchmark: Before:

  $ time truncate -s 1000M foo
  real	0m0.568s

After:

  $ time truncate -s 1000M foo
  real	0m0.205s
2016-07-01 23:32:27 +02:00
Jakob Unterwurzacher
ae77d18527 fusefrontend: better comments for Truncate 2016-07-01 09:23:04 +02:00
Jakob Unterwurzacher
e994ffa27d fusefrontend: handle dir-overwrites-dir on XFS
XFS returns a different error code if you try to overwrite
a non-empty directory with a directory:

XFS:  mv: cannot move ‘foo’ to ‘bar/foo’: File exists
ext4: mv: cannot move 'foo' to 'bar/foo': Directory not empty

So have EEXIST trigger the Rmdir logic as well.

Fixes issue #20
Link: https://github.com/rfjakob/gocryptfs/issues/20
2016-06-30 23:17:54 +02:00
Jakob Unterwurzacher
3288d98703 fusefrontend: fix PlaintextNames versions of Mkdir, Rmdir
The "!fs.args.DirIV" special case was removed by b17f0465c7
but that, by accident, also removed the handling for
PlaintextNames.

Re-add it as an explicit PlaintextNames special case.

Also adds support for removing directories that miss their
gocryptfs.diriv file for some reason.
2016-06-27 00:27:36 +02:00
Jakob Unterwurzacher
0115588680 main, fusefrontend: enable suid functionality
FUSE filesystems are mounted with "nosuid" by default. If we run as root,
we can use device files by passing the opposite mount option, "suid".

Also we have to use syscall.Chmod instead of os.Chmod because the
portability translation layer "syscallMode" messes up the sgid
and suid bits.

Fixes 70% of the failures in xfstests generic/193. The remaining are
related to truncate, but we err on the safe side:

    $ diff -u tests/generic/193.out /home/jakob/src/fuse-xfstests/results//generic/193.out.bad
    [...]
     check that suid/sgid bits are cleared after successful truncate...
     with no exec perm
     before: -rwSr-Sr--
    -after:  -rw-r-Sr--
    +after:  -rw-r--r--
2016-06-26 20:13:21 +02:00
Jakob Unterwurzacher
23cc0657f4 fusefronted: preserve owner if running as root
If allow_other is set and we run as root, try to give newly created files to
the right user.
2016-06-26 19:18:13 +02:00
Jakob Unterwurzacher
38767ab527 fuserfrontend: support truncate(2) by wrapping ftruncate(2)
Support truncate(2) by opening the file and calling ftruncate(2)
While the glibc "truncate" wrapper seems to always use ftruncate, fsstress from
xfstests uses this a lot by calling "truncate64" directly.
2016-06-26 18:41:04 +02:00
Jakob Unterwurzacher
b558901e66 Drop deprecated "-gcmiv128" option
The GCMIV128 feature flag is already mandatory, dropping the command
line option is the final step.

Completes https://github.com/rfjakob/gocryptfs/issues/29 .
2016-06-23 22:10:19 +02:00
Jakob Unterwurzacher
3d59a72ba9 Drop deprecated "-emenames" option
The EMENames feature flag is already mandatory, dropping the command
line option is the final step.
2016-06-23 21:56:50 +02:00
Jakob Unterwurzacher
b17f0465c7 Drop deprecated "-diriv" option
The DirIV feature flag is already mandatory, dropping the command
line option is the final step.
2016-06-23 21:38:59 +02:00
Jakob Unterwurzacher
6c3f97399a Rename internal "toggledlog" package to "tlog"
tlog is used heavily everywhere and deserves a shorter name.

Renamed using sed magic, without any manual rework:

   find * -type f -exec sed -i 's/toggledlog/tlog/g' {} +
2016-06-15 23:30:44 +02:00
Jakob Unterwurzacher
393e531afd Fix warnings reported by Go 1.6 "go tool vet -shadow=true"
Warnings were:

  main.go:234: declaration of err shadows declaration at main.go:163:
  internal/fusefrontend/file.go:401: declaration of err shadows declaration at internal/fusefrontend/file.go:379:
  internal/fusefrontend/file.go:419: declaration of err shadows declaration at internal/fusefrontend/file.go:379:
  internal/fusefrontend/fs_dir.go:140: declaration of err shadows declaration at internal/fusefrontend/fs_dir.go:97:
2016-06-14 22:46:23 +02:00
Jakob Unterwurzacher
5b1eed35ee fusefrontend: Utimens: convert ENOENT to EBADF
If /proc/self/fd/X did not exist, the actual error is that the file
descriptor was invalid.

go-fuse's pathfs prefers using an open fd even for path-based operations
but does not take any locks to prevent the fd from being closed.
Instead, it retries the operation by path if it get EBADF. So this
change allows the retry logic to work correctly.

This fixes the error

    rsync: failed to set times on "/tmp/ping.Kgw.mnt/linux-3.0/[...]/.dvb_demux.c.N7YlEM":
    No such file or directory (2)

that was triggered by pingpong-rsync.bash.
2016-06-09 22:21:00 +02:00
Jakob Unterwurzacher
5da292828c fusefrontend: fix chown on dangling symlinks
We (actually, go-fuse) used to call Chown() instead of Lchown()
which meant that the operation would fail on dangling symlinks.

Fix this by calling os.Lchown() ourself. Also add a test case
for this.
2016-06-08 00:32:44 +02:00
Jakob Unterwurzacher
a602e798b1 fusefrontend: report an error if all files in a directory were invalid
Just presenting an empty directory means that the user does not know
that things went wrong unless he checks the syslog or tries to delete
the directory.

It would be nice to report the error even if only some files were
invalid. However, go-fuse does not allow returning the valid
directory entries AND an error.
2016-06-04 16:39:27 +02:00
Jakob Unterwurzacher
5dd9576a11 fusefrontend: replace unreliable "fd < 0" check
... with the "released" boolean.

For some reason, the "f.fd.Fd() < 0" check did not work reliably,
leading to nil pointer panics on the following wlock.lock().

The problem was discovered during fsstress testing and is unlikely
to happen in normal operations.

With this change, we passed 1700+ fsstress iterations.
2016-05-30 09:36:06 +02:00
Jakob Unterwurzacher
1648c54adb fusefrontend: use sync.Once for one-time warnings
Using a simple boolean was racy (which was harmless
in this case) and non-idomatic.
2016-05-29 22:50:03 +02:00
Jakob Unterwurzacher
fd53dfd2ad fusefronted: check Fstat return value on file create
The Fstat call should never fail, but still, if it does return an error
it should be handled properly.
2016-05-29 22:43:48 +02:00
Jakob Unterwurzacher
77813bdc13 fusefrontend: simplify wlockMap
mapMutex can be anonymous and using an RWMutex is overkill
because the lock protects very short sections.
2016-05-29 22:40:05 +02:00
Jakob Unterwurzacher
4c0cb37c50 fusefrontend: remove unused "forgotten" variable
The functionality has long been replaced by the fd < 0
check.
2016-05-29 13:46:47 +02:00
David Gnedt
a93bcabe9c Encrypt path in statfs() calls
Paths in statfs() calls were not encrypted resulting in
an Function not implemented error, when the unencrypted
path didn't exist in the underlying (encrypted)
filesystem.

$ df plain/existingdir
df: ‘plain/existingdir’: Function not implemented
2016-05-12 23:24:39 +02:00
Jakob Unterwurzacher
ba7c798418 fusefrontend: fix panic due to concurrently unregistered wlock
Commit 730291feab properly freed wlock when the file descriptor is
closed. However, concurrently running Write and Truncates may
still want to lock it. Check if the fd has been closed first.
2016-05-08 23:21:20 +02:00
Jakob Unterwurzacher
730291feab fusefrontend: fix wlock memory leak
The write lock was not freed on release, causing a slow memory leak.

This was noticed by running extractloop.bash for 10 hours.
2016-05-05 13:38:39 +02:00
Jakob Unterwurzacher
4d79fba285 prelloc: warn and continue if fallocate(2) is not supported
This makes gocryptfs work at all on ZFS.
See https://github.com/rfjakob/gocryptfs/issues/22 .
2016-04-20 22:47:31 +02:00
Jakob Unterwurzacher
bd5405189e Fix "go tool vet -shadow=true" warnings
Among those one real bug.
2016-04-10 21:31:15 +02:00
Jakob Unterwurzacher
db72fcea41 longnames: fix fsstress failure, use dirfd
Using dirfd-relative operations allows safe lockless handling
of the ".name" files.
2016-04-10 21:31:08 +02:00
Jakob Unterwurzacher
63d3e51734 longnames: use symbolic constants instead of naked ints 2016-04-10 12:36:43 +02:00
Jakob Unterwurzacher
653d4a619c longnames part II: Rename, Unlink, Rmdir, Mknod, Mkdir + tests 2016-02-07 14:02:09 +01:00
Jakob Unterwurzacher
6b5d977cce Move OpenDir to fs_dir.go 2016-02-07 11:29:54 +01:00
Jakob Unterwurzacher
e111e20649 longnames part I: Create and OpenDir work with long filenames > 176 bytes
Todo: Rename, Unlink, Rmdir, Mknod, Mkdir
2016-02-06 22:54:14 +01:00
Jakob Unterwurzacher
c74772bc8d Run go fmt 2016-02-06 20:23:36 +01:00
Jakob Unterwurzacher
b0ee5258b1 Fix tests - were broken by the refactoring 2016-02-06 20:22:45 +01:00
Jakob Unterwurzacher
9078a77850 Move pathfs_frontend to internal/fusefrontend
"git status" for reference:

renamed:    pathfs_frontend/args.go -> internal/fusefrontend/args.go
renamed:    pathfs_frontend/compat_darwin.go -> internal/fusefrontend/compat_darwin.go
renamed:    pathfs_frontend/compat_linux.go -> internal/fusefrontend/compat_linux.go
renamed:    pathfs_frontend/file.go -> internal/fusefrontend/file.go
renamed:    pathfs_frontend/file_holes.go -> internal/fusefrontend/file_holes.go
renamed:    pathfs_frontend/fs.go -> internal/fusefrontend/fs.go
renamed:    pathfs_frontend/fs_dir.go -> internal/fusefrontend/fs_dir.go
renamed:    pathfs_frontend/names.go -> internal/fusefrontend/names.go
renamed:    pathfs_frontend/write_lock.go -> internal/fusefrontend/write_lock.go
modified:   main.go
2016-02-06 19:27:59 +01:00