hardcoresushi/libgocryptfs
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Author SHA1 Message Date
Jakob Unterwurzacher
c0e7530216 Update README for v2.0 2021-06-05 14:47:57 +02:00
Jakob Unterwurzacher
5ed1a90c7e doc: add benchmark for v2.0, reformat table 2021-06-05 14:46:49 +02:00
Jakob Unterwurzacher
3a1f009c1a Add contrib/atomicrename 
$ ./contrib/atomicrename/atomicrename -h
atomicrename creates 100 "src" files in the current directory, renames
them in random order over a single "dst" file while reading the "dst"
file concurrently in a loop.

Progress and errors are reported as they occour in addition to a summary
printed at the end. cifs and fuse filesystems are known to fail, local
filesystems and nfs seem ok.

See https://github.com/hanwen/go-fuse/issues/398 for background info.
 2021-06-04 22:17:13 +02:00
Jakob Unterwurzacher
015cd066e1 fido2: quote argument strings in debug output 
Tested using

  gocryptfs -init -debug -fido2 "hello world" cipherdir

Output before:

  callFidoCommand: executing "/usr/bin/fido2-cred" with args [fido2-cred -M -h -v hello world]

After:

  callFidoCommand: executing "/usr/bin/fido2-cred" with args ["fido2-cred" "-M" "-h" "-v" "hello world"]

Related: https://github.com/rfjakob/gocryptfs/issues/571
 2021-06-03 22:03:21 +02:00
Jakob Unterwurzacher
8f2be5d93c fsck: mark temporary mount read-only 
We don't write during fsck, but somebody else might try
to.
 2021-06-02 19:32:20 +02:00
Jakob Unterwurzacher
307dfd7f71 fsck: clean up temporary mountpoint 
We used to leave directories like

  /tmp/gocryptfs.fsck.104431245

behind. Let's clean up after ourselves.
 2021-06-02 19:31:55 +02:00
Jakob Unterwurzacher
a38e5988ba fusefrontend: run acl Setxattr in user context 
The result of setting an acl depends on who runs the
operation!

Fixes fuse-xfstests generic/375
(see https://github.com/rfjakob/fuse-xfstests/wiki/results_2021-05-19)
 2021-06-02 19:10:36 +02:00
Jakob Unterwurzacher
b23e21f61f fusefrontend: catch ReadAt integer overflow 
Discovered by xfstests generic/564 .

Failure was:

generic/564	- output mismatch (see /opt/fuse-xfstests/results//generic/564.out.bad)
    --- tests/generic/564.out	2021-05-08 21:11:05.307395966 +0200
    +++ /opt/fuse-xfstests/results//generic/564.out.bad	2021-05-19 19:01:16.912888879 +0200
    @@ -31,7 +31,7 @@
     source range beyond 8TiB returns 0

     destination range beyond 8TiB returns EFBIG
    -copy_range: File too large
    +copy_range: Function not implemented
 2021-06-02 18:20:05 +02:00
Jakob Unterwurzacher
04858ddd22 nametransform: check name validity on encryption 
xfstests generic/523 discovered that we allowed to set
xattrs with "/" in the name, but did not allow to read
them later.

With this change we do not allow to set them in the first
place.
 2021-06-02 14:29:48 +02:00
Jakob Unterwurzacher
242cdf966f go.mod: update go-fuse to get acl fixes 
Done using:

go get github.com/hanwen/go-fuse/v2@master
go mod tidy
 2021-05-30 09:34:03 +02:00
Jakob Unterwurzacher
198eb9797b Revert "go.mod: switch to go-fuse acl branch" 
Change https://review.gerrithub.io/c/hanwen/go-fuse/+/516154
was merged upstream.

This reverts commit 3374afccc4.
 2021-05-30 09:31:56 +02:00
Jakob Unterwurzacher
0e37fbe042 tests: TestFileHoleCopy: accept +-4kB 
Failure looked like this:

--- FAIL: TestFileHoleCopy (3.73s)
    --- FAIL: TestFileHoleCopy/k81 (0.04s)
        file_holes_test.go:93: size changed: st0.Blocks=88 st2.Blocks=96
    file_holes_test.go:147: aborting further subtests

$ findholes TestFileHoleCopy.k81.1
         0 data
     36864 hole
     45056 data
     50434 hole
     50434 eof

$ findholes TestFileHoleCopy.k81.2
         0 data
     36864 hole
     45056 data
     50434 hole
     50434 eof

$ filefrag -v TestFileHoleCopy.k81.1
Filesystem type is: ef53
File size of TestFileHoleCopy.k81.1 is 50434 (13 blocks of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..       2:   23702311..  23702313:      3:
   1:        3..       8:   20389855..  20389860:      6:   23702314:
   2:       11..      12:   23702314..  23702315:      2:   20389863: last,eof
TestFileHoleCopy.k81.1: 3 extents found

$ filefrag -v TestFileHoleCopy.k81.2
Filesystem type is: ef53
File size of TestFileHoleCopy.k81.2 is 50434 (13 blocks of 4096 bytes)
 ext:     logical_offset:        physical_offset: length:   expected: flags:
   0:        0..       2:   20389861..  20389863:      3:
   1:        3..       4:   23702316..  23702317:      2:   20389864:
   2:        5..       6:   20389864..  20389865:      2:   23702318:
   3:        7..       8:   23702318..  23702319:      2:   20389866:
   4:       11..      12:   23702320..  23702321:      2:             last,eof
TestFileHoleCopy.k81.2: 4 extents found
 2021-05-29 16:56:20 +02:00
Jakob Unterwurzacher
18befda0e6 fusefrontend: list "." and ".." in dir entries 
Fixes xfstests generic/401
 2021-05-29 16:44:38 +02:00
Jakob Unterwurzacher
738a9e006a fusefrontend: rewrite Lseek SEEK_DATA / SEEK_HOLE 
In response to the discussion of the xfstests mailing list [1],
I looked at the Lseek implementation, which was naive and
did not handle all cases correctly.

The new implementation aligns the returned values to 4096 bytes
as most callers expect.

A lot of tests are added to verify that we handle all
cases correctly now.

[1]: https://www.spinics.net/lists/fstests/msg16554.html
 2021-05-29 16:05:36 +02:00
Jakob Unterwurzacher
c1d7e38761 findholes: add --create, --verify 
Also, change the logic for the segment walk to not
rely on the total size. cp does not use the total
size either, and we miss bugs by cheating!
 2021-05-29 16:00:40 +02:00
Jakob Unterwurzacher
07164cbb3a contentenc: add PlainOffToCipherOff helper 
Will be used for improving Lseek()
 2021-05-26 18:28:59 +02:00
Jakob Unterwurzacher
b4794bedec contentenc: fix CipherSizeToPlainSize non-monoticity 
For an illegal cipherSize, pretend we have an additional
1-byte block.

See code comment for details.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
bebd7ed81f contentenc: update comments 
Also, replace one open-coded calculation with a
helper function.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
2a5ac3e9ba tests: contentenc: add TestSizeToSize 
TestSizeToSize tests CipherSizeToPlainSize and PlainSizeToCipherSize.

Fails at the moment due to CipherSizeToPlainSize non-moniticity.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
9695f0e524 tests: add TestFileHoleCopy 
Currently fails.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
629d0a5ad7 tests: re-enable TestInoReuseEvil 
Problem in go-fuse has long been fixed.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
8bccd3b4bf Add contrib/findholes 
Utility and libs to find hole/data segments using lseek.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
1b3c3b1347 syscallcompat: add GetdentsSpecial() 
GetdentsSpecial calls then Getdents syscall,
with normal entries and "." / ".." split into two slices.
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
7d72baca69 tests: add TestHaveDotdot 
As discovered by xfstests generic/401 [1], during the move to
the v2 api we seem to have lost the "." and ".." directory
entries.

[1]: 4ef5b032bc/screenlog.0 (L520)
 2021-05-26 13:17:56 +02:00
Jakob Unterwurzacher
1d2ac1e589 stupidgcm: prefer Go stdlib over OpenSSL on Apple M1 
https://github.com/rfjakob/gocryptfs/issues/556
 2021-05-26 09:20:22 +02:00
Jakob Unterwurzacher
09870bfac5 syscallcompat: also refactor MkdiratUser on GOOS=darwin 
Breakage was:

+GOOS=darwin
+GOARCH=amd64
+go build -tags without_openssl
internal/fusefrontend/node_dir_ops.go:45:34: cannot use context (type *fuse.Context) as type *fuse.Caller in argument to syscallcompat.MkdiratUser
internal/fusefrontend/node_dir_ops.go:83:35: cannot use context (type *fuse.Context) as type *fuse.Caller in argument to syscallcompat.MkdiratUser
 2021-05-22 22:01:46 +02:00
Jakob Unterwurzacher
e1853e1011 syscallcompat: refactor MkdiratUser to take fuse.Context 
Let's have MkdiratUser take fuse.Context like everybody
else.
 2021-05-22 21:44:19 +02:00
Jakob Unterwurzacher
cb4f9f9e29 syscallcompat: deduplicate OpenatUser/MknodatUser/SymlinkatUser/MkdiratUser 
Turns out the whole euid switching logic can be shared when
wrapping the syscall in a closure.
 2021-05-22 21:39:29 +02:00
Jakob Unterwurzacher
0650a512bb fsck: redirect go-fuse noise to syslog 2021-05-18 18:38:23 +02:00
Jakob Unterwurzacher
5da20da977 -speed: note that XChaCha20 is not selectable 
This is unclear to users, as seen on
https://github.com/rfjakob/gocryptfs/issues/452#issuecomment-828836651
 2021-05-18 09:53:23 +02:00
Jakob Unterwurzacher
c33c7aaf0d Merge package-source.bash & package-static.bash scripts 2021-05-15 18:50:20 +02:00
Jakob Unterwurzacher
4488b5b93a Update README for v2.0-beta4 2021-05-15 18:27:41 +02:00
Jakob Unterwurzacher
3374afccc4 go.mod: switch to go-fuse acl branch 
Until https://review.gerrithub.io/c/hanwen/go-fuse/+/516154
gets merged.

Commands used:

go mod edit -replace github.com/hanwen/go-fuse/v2=github.com/rfjakob/go-fuse/v2@acl
go mod download github.com/hanwen/go-fuse/v2
go mod tidy
 2021-05-15 18:01:51 +02:00
Jakob Unterwurzacher
86d8336b43 Add -acl flag to enable ACL enforcement 
With test to verify that it actually works this
time: Run "make root_test".

Depends-on: https://github.com/rfjakob/gocryptfs/issues/536
Fixes: https://github.com/rfjakob/gocryptfs/issues/536
 2021-05-15 17:58:37 +02:00
Jakob Unterwurzacher
a91ad29d36 fusefrontend: fix RENAME_NOREPLACE darwin build failure 
Error was:

internal/fusefrontend/node.go:371:2: duplicate case syscallcompat.RENAME_NOREPLACE (value 0) in switch
	previous case at internal/fusefrontend/node.go:368:7

Rewrite using "if"s instead.
 2021-05-15 17:20:43 +02:00
Jakob Unterwurzacher
1ba2e42234 fusefrontend: avoid duplicate const definition 
RENAME_NOREPLACE is already defined in syscallcompat.
 2021-05-08 20:42:42 +02:00
Jakob Unterwurzacher
a267562d29 fusefrontend: reject broken RENAME_EXCHANGE and RENAME_WHITEOUT 
Discovered by xfstests generic/013: or implementation for
RENAME_EXCHANGE and RENAME_WHITEOUT is incomplete. Reject the
flags so that the caller retries with regular rename.
 2021-05-08 15:39:49 +02:00
Jakob Unterwurzacher
7466f12a92 README: fix broken markdown links 2021-05-07 20:58:42 +02:00
Jakob Unterwurzacher
c57fd9adc9 Update README for v2.0-beta3 release 2021-04-24 12:26:54 +02:00
Jakob Unterwurzacher
e678737967 go mod: switch back to mainline go-fuse 
Change was merged:
a90e1f463c

Done using:

$ go mod edit -dropreplace github.com/hanwen/go-fuse/v2
$ go get github.com/hanwen/go-fuse/v2@master
go: downloading github.com/hanwen/go-fuse/v2 v2.1.1-0.20210423170155-a90e1f463c3f
go get: upgraded github.com/hanwen/go-fuse/v2 v2.0.4-0.20210125162859-8e0bbdb16cb7 => v2.1.1-0.20210423170155-a90e1f463c3f

Related: https://github.com/rfjakob/gocryptfs/issues/549
 2021-04-24 12:23:17 +02:00
Jakob Unterwurzacher
5cb1e55714 Doc: update performance.txt 2021-04-07 07:21:20 +02:00
Jakob Unterwurzacher
4a07d6598c fusefrontend: make dirCache work for "node itself" 
"node itself" can be converted to node + child by
ascending one level.

Performance gains are spectacular, as will be seen
in the next commit.
 2021-04-07 07:18:35 +02:00
Jakob Unterwurzacher
770c4deb71 profiling/ls.bash: add -nosyslog 
This makes sure we actually see the dirCache stats.
 2021-04-05 18:20:59 +02:00
Jakob Unterwurzacher
f73aee72f8 fusefrontend: print dirCache stats after unmount 2021-04-05 18:20:17 +02:00
Jakob Unterwurzacher
043f81dd01 fs: more idiomatic dirCache struct naming 2021-04-04 13:05:47 +02:00
Jakob Unterwurzacher
dc8501f6b2 performance.txt: add dirfd caching results 
Also, add v2.0-beta2-16-geaca820. I bisected the ls performance
regression to this commit.
 2021-04-03 14:09:10 +02:00
Jakob Unterwurzacher
24d5d39300 fs: add initial dirfd caching 
dirfd caching was temporarily removed when moving
to the v2api. Add it back to gain back some lost speed.
 2021-04-03 13:08:28 +02:00
Jakob Unterwurzacher
6aae2aad97 tests: fusefronted: fix TestOpenBackingDir 
This test only worked accidentially, and would
break once dirfd caching is added.

fs.Mkdir(..., "dir1/dir2", ...) is illegal
(child name cannot contain slashes).
 2021-04-03 12:34:18 +02:00
Jakob Unterwurzacher
6b28c0be2c fusefronted: replace last rn.openBackingDir() calls 
Use the n.prepareAtSyscall() wrapper instead. Prepares
for adding caching into n.prepareAtSyscall().
 2021-04-03 11:19:04 +02:00
Jakob Unterwurzacher
beab7004f2 tests: sharedstorage: wait 100ms longer for cache expiry 
With 1.0 seconds we see failures on Travis, example:
https://travis-ci.org/github/rfjakob/gocryptfs/builds/765648739

With 1.1 seconds it seems to always work.
 2021-04-02 20:22:26 +02:00