hardcoresushi/libgocryptfs
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Author SHA1 Message Date
Jakob Unterwurzacher
7de3330d70 v2api: implement Rename 2020-07-11 19:56:45 +02:00
Jakob Unterwurzacher
84344834c4 v2api: remove OpenatUserCtx, MknodatUserCtx helpers 
Instead, use the new toFuseCtx() function introduced
in an earlier commit.
 2020-07-11 19:44:45 +02:00
Jakob Unterwurzacher
250dbc6436 v2api: implement Symlink 2020-07-11 19:43:07 +02:00
Jakob Unterwurzacher
c35b575d5f v2api: implement Link 2020-07-11 19:32:38 +02:00
Jakob Unterwurzacher
b971c75e67 v2api: implement Mknod 2020-07-11 19:23:04 +02:00
Jakob Unterwurzacher
855b4a95b7 v2api: implement Statfs 2020-07-11 18:59:54 +02:00
Jakob Unterwurzacher
a39fc8ab2e v2api: fix crash on umount 
fs.Mount already called srv.Serve() for us.
 2020-07-08 22:21:27 +02:00
Jakob Unterwurzacher
40a31e0c32 v2api: list interfaces to be implemented 2020-07-05 20:22:24 +02:00
Jakob Unterwurzacher
63f68a0fcd v2api: implement Setattr 2020-07-05 20:10:53 +02:00
Jakob Unterwurzacher
c22e78ee41 v2api: implement Opendir 2020-07-05 19:34:30 +02:00
Jakob Unterwurzacher
1f4e554168 v2api: merge openBackingDir into root_node.go 2020-07-04 21:42:04 +02:00
Jakob Unterwurzacher
d2139e18ef v2api: implement Open() 2020-07-04 21:37:44 +02:00
Jakob Unterwurzacher
d73e4b3f7c v2api: add prepareAtSyscall helper 2020-07-04 21:16:20 +02:00
Jakob Unterwurzacher
23180794fe v2api: implement Readlink 2020-07-04 20:32:02 +02:00
Jakob Unterwurzacher
1618fbbac5 v2api: implement Unlink 2020-06-21 14:08:53 +02:00
Jakob Unterwurzacher
cc0b94a3c5 v2api: implement Rmdir 2020-06-21 13:57:04 +02:00
Jakob Unterwurzacher
192a29075a v2api: implement Mkdir 2020-06-21 13:46:08 +02:00
Jakob Unterwurzacher
f6ded09e36 v2api: implement Create 2020-06-21 13:25:12 +02:00
Jakob Unterwurzacher
74a4accf0c v2api: collect RootNode code in root_node.go 2020-06-21 12:44:32 +02:00
Jakob Unterwurzacher
ebdf58b9eb v2api: implement GetAttr and Readdir 2020-06-21 12:42:18 +02:00
Jakob Unterwurzacher
77632b7554 getdents_c: read from two threads 
This was an attempt to make the C code more
similar to Go (which also reads from multiple threads).

However, I still could not repro the ENOENT problems.

https://github.com/rfjakob/gocryptfs/issues/483
 2020-06-21 12:01:34 +02:00
Jakob Unterwurzacher
6aa9f5636f v2api: implement Lookup() 
Compiles, but untested otherwise. No caching.
 2020-06-21 12:01:34 +02:00
Jakob Unterwurzacher
9b8ce55383 inomap: clarify TranslateStat function comment 
Also, fix the namespaceMap comment.
 2020-06-21 12:01:34 +02:00
Jakob Unterwurzacher
2aad58f9ec v2api (go-fuse v2 api): initial noop implementation 
Compiles and mounts but does nothing useful.
 2020-06-21 12:01:24 +02:00
Jakob Unterwurzacher
3b61244b72 tests: TestBadname: simplify test by using empty files 
Simplify the tests by using empty files. Empty
files are valid, and we don't check the content
anyway.

Also adjust comment style a little and add
a missing break statement.
 2020-06-06 12:53:45 +02:00
Jakob Unterwurzacher
261cf12829 badname: stop trying to decrypt at length 22 
At least 16 bytes due to AES --> at least 22 characters in base64
 2020-06-06 12:49:45 +02:00
DerDonut
a8230d271f Added auto decryption of invalid file names 
Changed invalid file decoding and decryption. Function
DecryptName now shortens the filename until the filename is
decodable and decryptable. Will work with valid **and**
invalid Base64URL delimiter (valid delimiter [0-9a-zA-z_\\-].
If the filename is not decryptable at all, it returns the
original cipher name with flag suffix Changed cli tests to
generate decryptable and undecryptable file names with correct
encrypted content. Replacing #474, extends #393
 2020-06-06 12:20:31 +02:00
Jakob Unterwurzacher
a56e7cc5ac sshfs-benchmark.bash: fix locale trouble and move to tests 
Locale trouble was

   sshfs-benchmark.bash: line 31: printf: 4.71: invalid number

because printf expected "4,71" in the German locale.
Force the C locale.
 2020-06-06 12:15:41 +02:00
Jeremy Hilliker
274e0d27b7 contrib/getdents-debug: fix function call missing argument from 22e3eec153 2020-06-01 10:18:18 +02:00
Jakob Unterwurzacher
22e3eec153 getdents-debug: loop and stop on first error 
Also try to improve and unify output a little.

$ ./getdents /usr/share/man/man1
  1: unix.Getdents: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; err=<nil>; total 122112 bytes
  2: unix.Getdents: n=9984; n=48; n=9976; n=9968; n=9976; n=9976; n=9992; n=9984; n=9992; n=10000; n=9976; n=9968; n=10000; n=2272; n=0; err=<nil>; total 122112 bytes
  3: unix.Getdents: n=9984; n=9984; n=9968; n=704; n=10000; n=10000; n=9968; n=9968; n=9992; n=10000; n=9960; n=9992; n=9992; n=1600; n=0; err=<nil>; total 122112 bytes
  4: unix.Getdents: n=9984; n=9984; n=9968; n=9976; n=9984; n=32; n=9992; n=9984; n=9992; n=10000; n=9976; n=9968; n=10000; n=2272; n=0; err=<nil>; total 122112 bytes

$ ./getdents_c /usr/share/man/man1
  1: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes
  2: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes
  3: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes
  4: getdents64: n=9984; n=9984; n=9968; n=9976; n=9984; n=9968; n=10000; n=9976; n=9992; n=10000; n=9976; n=9992; n=2312; n=0; errno=0 total 122112 bytes
 2020-05-28 23:23:53 +02:00
Jakob Unterwurzacher
b275c53fa7 contrib/getdents-debug: implement getdents -loop 
$ ./getdents -loop /mnt/synology/public/tmp/g1
unix.Getdents: n=4176; n=4176; n=4176; n=4176; n=4176; n=3192; n=0; err=<nil>; total 24072 bytes
unix.Getdents: n=4176; n=4176; n=4176; n=4176; n=4176; n=3192; n=0; err=<nil>; total 24072 bytes
unix.Getdents: n=4176; n=-1; err=no such file or directory; total 4176 bytes
 2020-05-25 23:32:11 +02:00
Jakob Unterwurzacher
0d522e0d3b Add contrib/getdents-debug/readdirnames 
Another way to repro the problem in
https://github.com/rfjakob/gocryptfs/issues/483
 2020-05-24 23:51:38 +02:00
Jakob Unterwurzacher
6019598fdb contrib: collect getdents stuff in getdents-debug folder 2020-05-24 23:46:41 +02:00
Jakob Unterwurzacher
71c0481f0e Revert "fusefrontend: don't always clear the dircache in Rename" 
As noticed by @slackner in
cb8872577d (commitcomment-39405233) ,
this is not safe.

This reverts commit cb8872577d.
 2020-05-24 23:36:11 +02:00
Jakob Unterwurzacher
15ff79bf14 syscallcompat: warn when Getdents truncates data 
On CIFS mounts, unix.Getdents can return sudden ENOENT
in the middle of data. This will not be reported as an error
by user space tools, so return EIO instead.

Also log it as a warning.

https://github.com/rfjakob/gocryptfs/issues/483
 2020-05-24 23:30:25 +02:00
Jakob Unterwurzacher
b3350f0ebb contrib: add getdents_c 
Same thing like contrib/getdents, but written in C.
 2020-05-24 23:29:59 +02:00
Jakob Unterwurzacher
c7a9425e1b Add contrib/getdents 
Small tool to try to debug unix.Getdents problems on CIFS mounts
https://github.com/rfjakob/gocryptfs/issues/483
 2020-05-24 22:54:58 +02:00
Jakob Unterwurzacher
1a91a11e00 contrib/sshfs-benchmark.bash: add rmdir, mkdir, touch 
And also, stop using the wrong directory for sshfs git init.

sshfs-benchmark.bash:    sshfs  gocryptfs-on-sshfs
git init                  4.35                7.82
rsync                     7.72               11.66
rm -R                     2.71               11.04
mkdir                     1.33                4.15
rmdir                     0.47                3.97
touch                     2.32                2.85
rm                        0.45                0.45
 2020-05-24 22:03:40 +02:00
Jakob Unterwurzacher
cb8872577d fusefrontend: don't always clear the dircache in Rename 
When filename encryption is on, we do know when we
overwrite a directory, and can clear only in this case.

sshfs-benchmark.bash:    sshfs  gocryptfs-on-sshfs
git init                  1.74                7.80
rsync                     6.19               11.63
 2020-05-24 20:19:27 +02:00
Jakob Unterwurzacher
2a9b99a0ef fusefrontend: don't clear dircache on Mkdir 
Mkdir can not cause existing entries in the cache to go
stale. So don't clear it. Benchmark results:

sshfs-benchmark.bash:    sshfs  gocryptfs-on-sshfs
git init                  1.65                8.74
rsync                     6.09               17.54
 2020-05-24 15:30:14 +02:00
Jakob Unterwurzacher
11dfcfd6c0 contrib: add sshfs-benchmark.bash 
Let's get some reproducible numbers for
https://github.com/rfjakob/gocryptfs/issues/481
and
https://github.com/rfjakob/gocryptfs/issues/410

Example run:

$ ./sshfs-benchmark.bash nuetzlich.net
working directory: /tmp/sshfs-benchmark.bash.vu4
sshfs mounted: nuetzlich.net:/tmp -> sshfs.mnt
gocryptfs mounted: sshfs.mnt/sshfs-benchmark.bash.KM9/gocryptfs.crypt -> gocryptfs.mnt

                         sshfs  gocryptfs-on-sshfs
git init                  1.68               11.23
rsync                     6.07               20.35
 2020-05-24 15:30:14 +02:00
Jakob Unterwurzacher
25f1727de9 syscallcompat: getdents: retry on EINTR 
Fixes: https://github.com/rfjakob/gocryptfs/issues/483
Related: https://github.com/golang/go/issues/38836
 2020-05-23 22:54:23 +02:00
Jakob Unterwurzacher
f8ad2ac3e2 dircache: increase cache size & lifetime 
Looking at the dircache debug output, we see
that a "git status" workload has a very bad
cache hit rate because the entries expire or
get evicted before they can be reused.

Increase both cache size and lifetime for
a 4x speedup:

Before: 75s
After:  17s

https://github.com/rfjakob/gocryptfs/issues/410
 2020-05-17 21:37:36 +02:00
Jakob Unterwurzacher
f6088e5008 dircache: improve debug messages 
Before:

Lookup "errno.html/1/2/3/4/5": miss
Store: "errno.html/1/2/3/4/5" fd=26 iv=21be6e083d60dcabfe7368264d5082b7
Lookup "errno.html": hit 25 6d68a16d217978915036a3bd55428ae7
Lookup "errno.html/1": hit 25 932a464c299b3430c5e55c924f98ac4d
Lookup "errno.html/1/2": hit 25 7d53348b1692d537f017bf86b3cf5feb
Lookup "errno.html/1/2/3": hit 25 2aef1c9d1ab2b55b163215053fefe703
Lookup "errno.html/1/2/3/4": hit 25 cb802be53721c46a46247c5e4e0f4ce6
Lookup "errno.html/1/2/3/4": hit 25 cb802be53721c46a46247c5e4e0f4ce6
Lookup "errno.html": hit 25 6d68a16d217978915036a3bd55428ae7

After:

Lookup "earlyoom/.git/refs"                     hit fd=10 dup=17 iv=6ae2cecd269a25e8d946aff6afe9b8b8
Lookup "earlyoom/.git/refs/remotes"             hit fd=19 dup=17 iv=f04c2d2a5bcc33ebdeaca664859c980d
Lookup "earlyoom/.git/refs/remotes/origin"      miss
Store  "earlyoom/.git/refs/remotes/origin"      fd=17 iv=834a64a1697c9f5705455ba6dbed22b5
Lookup "earlyoom"                               hit fd=7 dup=25 iv=2303a892d6e2357c483574a8070b7679
Lookup "earlyoom/.git"                          hit fd=11 dup=25 iv=d43ca4aff23720c57789c9f62f0aee00
Lookup "earlyoom/.git"                          hit fd=11 dup=25 iv=d43ca4aff23720c57789c9f62f0aee00
Lookup "earlyoom/.git/refs"                     hit fd=10 dup=25 iv=6ae2cecd269a25e8d946aff6afe9b8b8
Lookup "earlyoom/.git/refs/heads"               hit fd=13 dup=25 iv=f9245e7c066b9adc768a1a666da9fbc8
 2020-05-17 21:26:56 +02:00
Jakob Unterwurzacher
bf66da6880 Update changelog 2020-05-17 19:40:30 +02:00
Jakob Unterwurzacher
416080203b main: accept multiple -passfile options 
Each file will be read and then concatenated
for the effictive password. This can be used as a
kind of multi-factor authenticiton.

Fixes https://github.com/rfjakob/gocryptfs/issues/288
 2020-05-17 19:31:04 +02:00
Jakob Unterwurzacher
ded4bbe645 go mod tidy 
The go-fuse v1 dependency is spurious. Will be fixed by
https://github.com/hanwen/go-fuse/pull/360
 2020-05-17 14:25:30 +02:00
Jakob Unterwurzacher
ec74d1d2f4 Update go-fuse import path to github.com/hanwen/go-fuse/v2 
We need
fd7328faf9
to fix a crash reported in https://github.com/rfjakob/gocryptfs/issues/430 :

  2019/10/30 17:14:16 Unknown opcode 2016
  panic: runtime error: invalid memory address or nil pointer dereference
  [signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x508d38]

This patch is only in the v2.x.x branch. Upgrade to v2, as the
old API is also supported there.

Running

  git grep hanwen/go-fuse | grep -v hanwen/go-fuse/v2

to check for forgotten references comes back clean.
 2020-05-17 14:23:47 +02:00
Jakob Unterwurzacher
ead7008a08 Fix spelling mistakes found by misspell 
https://github.com/client9/misspell
 2020-05-10 00:25:49 +02:00
Jakob Unterwurzacher
1d145be5a1 contrib: delete ctlsock-encrypt.bash 
Closes https://github.com/rfjakob/gocryptfs/issues/416
 2020-05-10 00:15:06 +02:00