hardcoresushi/libgocryptfs
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Author SHA1 Message Date
Jakob Unterwurzacher
fcdb4bec09 fusefronted: dirCache: fix bug handling "" 
Bug looked like this:

  $ ls -l .
  total 0
  drwxrwxr-x. 2 jakob jakob 60 Jan  3 15:42 foo
  -rw-rw-r--. 1 jakob jakob  0 Jan  3 15:46 x

  $ ls -l .
  ls: cannot access '.': No such file or directory

(only happened when "" was in the dirCache)
 2019-01-03 15:59:54 +01:00
Jakob Unterwurzacher
bb9884549b tests: allow one extra fd in fd leak detector (dirCache) 
The gocryptfs process may keep one fd open for up to one second
in the dirCache.
 2019-01-03 15:38:51 +01:00
Jakob Unterwurzacher
4f66d66755 fusefrontend: add dirCache 2019-01-03 15:31:13 +01:00
Jakob Unterwurzacher
f6dad8d0fa nametransform: simplify WriteDirIV to WriteDirIVAt 
Un-spaghettify the function and let the callers open
the directory.
 2019-01-03 15:31:13 +01:00
Jakob Unterwurzacher
0fd7637624 fusefrontend: use O_RDONLY in the ListXAttr fallback path 
Copy-paste error.

https://github.com/rfjakob/gocryptfs/issues/308
 2019-01-02 22:20:44 +01:00
Jakob Unterwurzacher
352f3147c5 fusefrontend: move openBackingDir into its own file 
This function is in all fastpaths, will get a cache, and needs
its own file.
renamed:    internal/fusefrontend/names.go -> internal/fusefrontend/openbackingdir.go
renamed:    internal/fusefrontend/names_test.go -> internal/fusefrontend/openbackingdir_test.go
 2019-01-02 21:52:52 +01:00
Jakob Unterwurzacher
2b12bba274 fusefronted: make EncryptPath symlink-safe 
Finally allows us to delete EncryptPathDirIV.
 2019-01-02 21:45:40 +01:00
Jakob Unterwurzacher
59f1300591 tests: retry longer when we see a fd leak 
Hopefully gets rid of the false positives on travis.
 2019-01-02 21:03:26 +01:00
Jakob Unterwurzacher
acccfa60d6 travis: "go get" must descend into subdirs to catch pkg/xattr 
recent builds all failed with:

  tests/fsck/fsck_test.go:12:2: cannot find package "github.com/pkg/xattr"
 2019-01-02 20:55:35 +01:00
Jakob Unterwurzacher
b214be5e3f fusefrontend: xattr: fix operations on files without read permissions 
* listxattr is fixed via the /proc/self/fd trick
* setxattr,removexattr are fixed by opening the file O_WRONLY

Fixes https://github.com/rfjakob/gocryptfs/issues/308
 2019-01-02 20:48:46 +01:00
Jakob Unterwurzacher
d269c28d16 tests: xattr: set on 0200 file, list on 0000 file 
https://github.com/rfjakob/gocryptfs/issues/308
 2019-01-02 20:45:55 +01:00
Jakob Unterwurzacher
bb7f919674 fusefrontend: don't downgrade type needlessly 2019-01-02 20:45:08 +01:00
Jakob Unterwurzacher
a77d31ca82 travis: fix go get command (needs -t), update dep 
Only with the "-t" flag does go get download dependencies
that are only used in tests.
 2019-01-02 17:06:01 +01:00
Jakob Unterwurzacher
f320b76fd1 fusefrontend: use Fsetxattr/Fgetxattr/etc on all platforms 
Darwin now also has these functions, use them. Simplifies
the code and makes it symlink-safe on Darwin as well.
 2019-01-02 16:58:48 +01:00
Jakob Unterwurzacher
7995a8358e syscallcompat: add Fgetxattr / Fsetxattr wrappers 
These take care of buffer sizing and parsing.
 2019-01-02 16:56:23 +01:00
Jakob Unterwurzacher
55a27a47df tests: better error message for TestBase64XattrRead 
Make clear what we have and what we want.
 2019-01-02 16:55:51 +01:00
Jakob Unterwurzacher
772afa93f9 tests: add fd leak retry logic to UnmountErr, really return error 
Give the gocryptfs process one extra millisecond to close
files. Allows us to drop several other sleeps.

UnmountErr now really returns an error when it detects an fd leak
instead of just printing a message.
 2019-01-02 01:09:09 +01:00
Jakob Unterwurzacher
5aa1755cbc fusefrontend: openBackingDir: fix fd leak in error path 
Reported by @slackner at
932efbd459 (r31813373)
thanks!
 2019-01-02 00:14:12 +01:00
Jakob Unterwurzacher
d99a0480f7 nametransform: fix possible incomplete read in ReadLongNameAt 
Pread() needs retry logic, so instead of implementing it ourselves,
use os.File.

Reported by @slackner at
c09bf1f228 (r31813394)
 2019-01-02 00:09:17 +01:00
Jakob Unterwurzacher
d5a74d2a3e tests: ListFds(): filter out pipe and eventpoll fds 
These are created on demand by the Go runtime and are usually
not interesting.
 2019-01-02 00:09:17 +01:00
Jakob Unterwurzacher
b1819143c5 tests: make MountInfo field accessible 
Tests outside the test_helpers package may want to look
at this.
 2019-01-02 00:09:17 +01:00
Jakob Unterwurzacher
035b3367b7 tests: reverse: add ctlsocket cleanup delay 2019-01-02 00:09:17 +01:00
Jakob Unterwurzacher
035834dd51 tests: ListFds: show r/w status 
Also, drop entries that disappear while we stat them.
 2019-01-01 22:27:40 +01:00
Jakob Unterwurzacher
e276e255dc tests: split mount_unmount.go from helpers.go 
With the FD leak logic, the mount/unmount functions have
become complex enough to give them their own file.
 2019-01-01 22:27:10 +01:00
Jakob Unterwurzacher
10de105c13 tests: detect fd leaks on unmount 
For now, this only prints a message but does not fail the tests.
 2019-01-01 22:01:49 +01:00
Jakob Unterwurzacher
cd0ec342b9 fusefrontend: fix fd leak in error path 2019-01-01 20:49:56 +01:00
Jakob Unterwurzacher
77c3df48ef fusefrontend: fix fd leak in Access() 
Thanks @slackner!

Fixes https://github.com/rfjakob/gocryptfs/issues/306
 2019-01-01 20:10:17 +01:00
Jakob Unterwurzacher
887d5aa8e7 tests: teach ListFds() to check other processes 2019-01-01 20:05:38 +01:00
Jakob Unterwurzacher
817c485bb7 tests: save gocryptfs process id in test_helpers.MountPID 
This will allow to tests to monitor fd usage and maybe other things.
 2019-01-01 19:34:12 +01:00
Jakob Unterwurzacher
60e7a0ca9f fusefrontend: xattr: fix hang on FIFOs 
An Open() a fifo blocks until it is opened for writing.
This meant that xattr operations on FIFOs would block.
Pass O_NONBLOCK to fix that, and add a test.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
1d5500c3db fusefrontend: only compile getBackingPath() on Darwin 
This function is NOT symlink-safe. Darwin needs it because it lacks
fgetxattr(2) and friends.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
c3adf9729d fusefrontend: make ListXAttr symlink-safe on Linux 
Uses /proc/self/fd.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
d3ae87fa2b fusefrontend: make RemoveXAttr() symlink-safe 
Uses /proc/self/fd on Linux.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
810d2a8b47 fusefrontend: make SetXAttr() symlink-safe on Linux 
Uses the /proc/self/fd trick.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
2286372603 fusefrontend: make GetXAttr() symlink-safe on Linux 
Uses the /proc/self/fd trick, which does not work
on Darwin.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
b97d7d1d33 tests: add Flistxattr/Fgetxattr/Fremovexattr tests 
Test for the upcoming fd-based xattr support.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
a355670ca2 fusefrontend: make Utimens symlink-safe 
unix.UtimesNanoAt now also exists on Darwin, yay!
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
abbdaa8ea4 fusefrontend: fix compile failure on Darwin 
Failure was:

 + GOOS=darwin
 + GOARCH=amd64
 + go build -tags without_openssl
 # github.com/rfjakob/gocryptfs/internal/fusefrontend
 internal/fusefrontend/fs_dir.go:159:60: cannot use origMode | 448 (type uint16) as type uint32 in argument to syscallcompat.Fchmodat
 internal/fusefrontend/fs_dir.go:170:33: cannot use origMode (type uint16) as type uint32 in argument to syscallcompat.Fchmodat
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
d4b7f42c3b fusefrontend: mark Truncate, Unlink, Symlink symlink-safe 
No changes needed.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
436f918c21 fusefrontend: make Rmdir symlink-safe 
Now uses Unlinkat.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
2de3851abd nametransform: rename WriteLongName() -> WriteLongNameAt() 
And also rename DeleteLongName() -> DeleteLongNameAt(). The
naming follow the names open the openat() etc syscalls.
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
4fae240153 fusefrontend: make Readlink() symlink-safe 
Now symlink-safe through Readlinkat().
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
21f1f858b9 fusefrontend: make OpenDir() symlink-safe 
Interestingly, little or no performance impact:

$ ./benchmark.bash
Testing gocryptfs at /tmp/benchmark.bash.39W: gocryptfs v1.6-42-g30c2349-dirty; go-fuse v20170619-66-g6df8ddc; 2018-11-04 go1.11
Downloading linux-3.0.tar.gz
/tmp/linux-3.0.tar.gz                  100%[=========================================================================>]  92.20M  2.93MB/s    in 31s
2018-11-04 21:44:44 URL:https://cdn.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.gz [96675825/96675825] -> "/tmp/linux-3.0.tar.gz" [1]
WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 1.1808 s, 222 MB/s
READ:  262144000 bytes (262 MB, 250 MiB) copied, 0.866438 s, 303 MB/s
UNTAR: 24.745
MD5:   12.050
LS:    3.525
RM:    9.544

Note: kernel has been updated:

$ uname -a
Linux brikett 4.18.16-200.fc28.x86_64 #1 SMP Sat Oct 20 23:53:47 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
de3a2c1895 fusefrontend: mark a few more functions as symlink-safe / unsafe 2019-01-01 16:24:25 +01:00
Jakob Unterwurzacher
8586a83825 fusefrontend: use openBackingDir in ctlsock interface 
Instead of calling syscall.Open() ourselves, rely on
openBackingDir().
 2019-01-01 16:24:20 +01:00
Jakob Unterwurzacher
0c1ceed1fa fusefrontend: make GetAttr() symlink-safe 
Use openBackingDir() and Fstatat().

High performance impact, though part of it should be
mitigated by adding DirIV caching to the new code paths.

$ ./benchmark.bash
Testing gocryptfs at /tmp/benchmark.bash.Eou: gocryptfs v1.6-37-ge3914b3-dirty; go-fuse v20170619-66-g6df8ddc; 2018-10-14 go1.11
WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 1.2289 s, 213 MB/s
READ:  262144000 bytes (262 MB, 250 MiB) copied, 1.02616 s, 255 MB/s
UNTAR: 24.490
MD5:   13.120
LS:    3.368
RM:    9.232
 2019-01-01 16:24:09 +01:00
Jakob Unterwurzacher
932efbd459 fusefrontend: make openBackingDir() symlink-safe 
openBackingDir() used encryptPath(), which is not symlink-safe
itself. Drop encryptPath() and implement our own directory walk.

Adds three seconds to untar and two seconds to rm:

$ ./benchmark.bash
Testing gocryptfs at /tmp/benchmark.bash.MzG: gocryptfs v1.6-36-g8fb3c2f-dirty; go-fuse v20170619-66-g6df8ddc; 2018-10-14 go1.11
WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 1.25078 s, 210 MB/s
READ:  262144000 bytes (262 MB, 250 MiB) copied, 1.0318 s, 254 MB/s
UNTAR: 20.941
MD5:   11.568
LS:    1.638
RM:    5.337
 2019-01-01 16:24:09 +01:00
Jakob Unterwurzacher
0e2e7c13cf fusefrontend: mark symlink-safe FUSE calls 
Document which FUSE calls are already symlink-safe in
the function comment.
 2019-01-01 16:24:09 +01:00
Jakob Unterwurzacher
c09bf1f228 fusefrontend: make DecryptPath() symlink-safe 
DecryptPath is now symlink-safe through the use of *at()
functions.
 2019-01-01 16:24:09 +01:00
Jakob Unterwurzacher
ed6ed513d7 fusefrontend: make Access() symlink-safe. 
Make Access() symlink-safe through use of faccessat.
 2019-01-01 16:24:09 +01:00