hardcoresushi/libgocryptfs
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Author SHA1 Message Date
Jakob Unterwurzacher
de108d3fc0 -idle: don't lazy-unmount 
When a process has its working dir inside the mount,
the only way we notice is that we get EBUSY when trying
to unmount.

We used to lazy-unmount in this case, but this means
pulling the rug from under the process.

For example, bash will start throwing

  cd: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory

messages.

Fixes https://github.com/rfjakob/gocryptfs/issues/533
 2021-01-02 18:19:41 +01:00
gmd20
c20c7992a0 main: add "-kernel_cache" flag 
This option is similar to fuse(8) kernel_cache

Verified using vmtouch.

Without -kernel_cache:

$ dd if=/dev/zero of=foo bs=1M count=10 ; vmtouch -t foo ; vmtouch foo
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0,0242321 s, 433 MB/s
           Files: 1
     Directories: 0
   Touched Pages: 2560 (10M)
         Elapsed: 0.011159 seconds
           Files: 1
     Directories: 0
  Resident Pages: 0/2560  0/10M  0%
         Elapsed: 0.000993 seconds

With -kernel_cache:

$ dd if=/dev/zero of=foo bs=1M count=10 ; vmtouch -t foo ; vmtouch foo
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0,0244015 s, 430 MB/s
           Files: 1
     Directories: 0
   Touched Pages: 2560 (10M)
         Elapsed: 0.011564 seconds
           Files: 1
     Directories: 0
  Resident Pages: 2560/2560  10M/10M  100%
         Elapsed: 0.000369 seconds
 2020-12-20 09:55:04 +01:00
Jakob Unterwurzacher
14dac373c2 MANPAGE: add fstab example 
https://github.com/rfjakob/gocryptfs/issues/497
 2020-11-14 15:27:40 +01:00
Jakob Unterwurzacher
8470cc38df MANPAGE: add -info example output 2020-11-14 15:08:57 +01:00
Jakob Unterwurzacher
6bb42f79fd MANPAGE: split up OPTIONS into action flags, init, mount, common 
Fixes https://github.com/rfjakob/gocryptfs/issues/517
 2020-11-14 15:00:47 +01:00
Jakob Unterwurzacher
0b2562fdba MANPAGE: clarify -fg and syslog interaction 
The flag -fg does NOT imply -nosyslog. Syslog redirection is
active when -notifypid is passed.
 2020-11-14 14:29:04 +01:00
Jakob Unterwurzacher
5d872b7106 Update Changelog for v2.0-beta2 2020-11-14 13:21:26 +01:00
Jakob Unterwurzacher
1c1692c4d9 fusefrontend_reverse: fix GETATTR panic 
We don't implement Getattr(), so don't try to call it.

Reported at https://github.com/rfjakob/gocryptfs/issues/519#issuecomment-718790790 :

15:22:53.414101 rx 3344: READ n2565 {Fh 7 [42143744 +131072)  L 0 RDONLY,0x8000}
15:22:53.414274 rx 3342: READ n2565 {Fh 7 [42012672 +131072)  L 0 RDONLY,0x8000}
15:22:53.414787 rx 3346: READ n2565 {Fh 7 [42274816 +131072)  L 0 RDONLY,0x8000}
15:22:53.414806 tx 3336:     OK,  131072b data "\xcb\xd3<\"!-\xa7\xc4"...
15:22:53.414874 rx 3348: GETATTR n1446 {Fh 0}
panic: interface conversion: *fusefrontend_reverse.File is not fs.FileGetattrer: missing method Getattr

goroutine 451 [running]:
github.com/rfjakob/gocryptfs/internal/fusefrontend_reverse.(*Node).Getattr(0xc00034c880, 0x5620579784c0, 0xc000593e60, 0x562057939800, 0xc000218050, 0xc0000fc108, 0x0)
        github.com/rfjakob/gocryptfs/internal/fusefrontend_reverse/node.go:69 +0x273
github.com/hanwen/go-fuse/v2/fs.(*rawBridge).getattr(0xc00011e000, 0x5620579784c0, 0xc000593e60, 0xc00034c880, 0x562057939800, 0xc000218050, 0xc0000fc108, 0xbfded1ef58ba7b13)
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fs/bridge.go:500 +0x2d4
github.com/hanwen/go-fuse/v2/fs.(*rawBridge).GetAttr(0xc00011e000, 0xc0000e0000, 0xc0000fc198, 0xc0000fc108, 0x0)
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fs/bridge.go:488 +0x11c
github.com/hanwen/go-fuse/v2/fuse.doGetAttr(0xc000120000, 0xc0000fc000)
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fuse/opcode.go:287 +0x6f
github.com/hanwen/go-fuse/v2/fuse.(*Server).handleRequest(0xc000120000, 0xc0000fc000, 0xc000000000)
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fuse/server.go:472 +0x2c1
github.com/hanwen/go-fuse/v2/fuse.(*Server).loop(0xc000120000, 0xc000288001)
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fuse/server.go:445 +0x18c
created by github.com/hanwen/go-fuse/v2/fuse.(*Server).readRequest
        github.com/hanwen/go-fuse/v2@v2.0.4-0.20200908172753-0b6cbc515082/fuse/server.go:312 +0x419
 2020-11-10 19:37:49 +01:00
Jakob Unterwurzacher
4872a4a8aa performance.txt: add v2.0-beta1-9 results 2020-11-10 19:27:30 +01:00
Jakob Unterwurzacher
6bdc8c6ee8 go.mod: switch back to mainline go-fuse 
https://review.gerrithub.io/c/hanwen/go-fuse/+/503508
was merged as
1d0096e579
so we don't need our fork anymore.
 2020-11-10 19:24:48 +01:00
Jakob Unterwurzacher
029e44d405 README: add link to gocryptfs-inspect 
This is *very* hard to find.

https://github.com/rfjakob/gocryptfs/issues/152
 2020-10-22 21:47:03 +02:00
Jakob Unterwurzacher
832e58cad4 Drop two more generated files 
These were committed by mistake.
 2020-10-19 19:27:47 +02:00
Jakob Unterwurzacher
165bf6c849 Drop generated files 
These were committed by mistake.
 2020-10-19 19:25:47 +02:00
Jakob Unterwurzacher
6697ffd6e2 fusefronted: reject GETXATTR "security.capability" 
Unless we are mounted with -suid, we can reject
these requests, and gain back some lost speed.

Closes https://github.com/rfjakob/gocryptfs/issues/515
 2020-10-18 21:07:30 +02:00
Jakob Unterwurzacher
c943ed32aa syscallcompat: add getxattr fastpaths 
The allocations from Lgetxattr were #1 in the tar extract
allocation profile (caused by security.capability lookups).
No more!

$ benchstat old.txt new.txt
name         old time/op  new time/op  delta
Lgetxattr-4  15.2µs ± 0%   1.8µs ± 0%   ~     (p=1.000 n=1+1)

$ ./benchmark.bash
Testing gocryptfs at /tmp/benchmark.bash.H8p: gocryptfs v2.0-beta1-4-g95ea738-dirty; go-fuse v2.0.4-0.20200908172753-0b6cbc515082 => github.com/rfjakob/go-fuse/v2 v2.0.4-0.20201015204057-88b12c99f8af; 2020-10-18 go1.15.3 linux/amd64
/tmp/benchmark.bash.H8p.mnt is a mountpoint
WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 0,520109 s, 504 MB/s
READ:  262144000 bytes (262 MB, 250 MiB) copied, 0,255672 s, 1,0 GB/s
UNTAR: 30,238
MD5:   12,721
LS:    10,038
RM:    16,536
 2020-10-18 00:25:42 +02:00
Jakob Unterwurzacher
95ea7383f9 fsck: make sure we unmount in all cases 2020-10-17 23:03:58 +02:00
Jakob Unterwurzacher
83a324a46b syscallcompat: add Lgetxattr benchmark 2020-10-16 20:04:22 +02:00
Jakob Unterwurzacher
d656574d08 performance.txt: add gocryptfs v1.8.0 results 2020-10-16 20:03:59 +02:00
Jakob Unterwurzacher
f99050b78a Update performance.txt with gocryptfs v2.0-beta1 result 
As expected, we are slow. Fd caching will be implemented later.
 2020-10-16 19:13:32 +02:00
Jakob Unterwurzacher
95775bf52c Update README for v2.0-beta1 2020-10-15 23:23:07 +02:00
Jakob Unterwurzacher
fcb28e4ff3 v2pai: delete fusefrontend_reverse_v1api 
Served its mission a copy-paste source but can now be deleted.
 2020-10-15 23:18:21 +02:00
Jakob Unterwurzacher
f03f56844b go.mod: temporarily switch to patched go-fuse fork 
Use our fork until https://review.gerrithub.io/c/hanwen/go-fuse/+/503508
gets merged.

Command used was:

	go mod edit -replace github.com/hanwen/go-fuse/v2=github.com/rfjakob/go-fuse/v2@knodes_upstreaming_v3
 2020-10-15 22:45:06 +02:00
Jakob Unterwurzacher
a2f48eb838 contrib: cleanup-tmp-mounts: also clean ext4-ramdisk 2020-10-15 17:49:17 +02:00
Jakob Unterwurzacher
871f305f90 main: show microseconds in go-fuse logs 
Suppress the date but show microseconds in fuse debug logs
(-fusedebug) and go-fuse warnings.
 2020-10-14 15:37:37 +02:00
Jakob Unterwurzacher
ec3eaf0b87 syscallcompat: don't retry Close() 
After Close() returns, the fd is dead, even if we
received EINTR. Don't retry, we could shoot down
an unrelated fd that received the same fd number.
 2020-10-14 13:40:12 +02:00
Jakob Unterwurzacher
af4c1fb7a3 syscallcompat: retry ops on EINTR 
Retry operations that have been shown to throw EINTR
errors on CIFS.

Todo: Solution for this pain in the back:

	warning: unix.Getdents returned errno 2 in the middle of data
	rm: cannot remove 'linux-3.0.old3/Documentation/ABI/removed': Input/output error

Progress towards fixing https://github.com/rfjakob/gocryptfs/issues/483 .
 2020-10-14 00:35:16 +02:00
Jakob Unterwurzacher
803fdf410b syscallcompat: Openat: retry on EINTR 
Towards fixing https://github.com/rfjakob/gocryptfs/issues/507
 2020-10-11 01:31:09 +02:00
Jakob Unterwurzacher
fe340477b2 build.bash: show "go mod edit -replace" in version string 
If you do something like this,

  go mod edit -replace github.com/hanwen/go-fuse/v2=/home/jakob/go/src/github.com/hanwen/go-fuse

the version string of the resulting binary should reflect that.

Before:

  gocryptfs v1.8.0-135-g352b547-dirty.gofuse_v2api; go-fuse v2.0.4-0.20200908172753-0b6cbc515082; 2020-10-03 go1.15.2 linux/amd64

After:

  gocryptfs v1.8.0-135-g352b547-dirty.gofuse_v2api; go-fuse v2.0.4-0.20200908172753-0b6cbc515082 => /home/jakob/go/src/github.com/hanwen/go-fuse; 2020-10-03 go1.15.2 linux/amd64
 2020-10-04 00:12:46 +02:00
Jakob Unterwurzacher
754c483870 tests: fsstress-gocryptfs.bash: log timestamp for each iteration 2020-10-04 00:12:46 +02:00
Jakob Unterwurzacher
66449bf56b tests: fsstress-gocryptfs.bash: add DEBUG option 
Also add a wrapper script, fsstress.collect-crashes.sh, to collect
the debug output.

https://github.com/hanwen/go-fuse/issues/372
 2020-10-04 00:12:25 +02:00
Jakob Unterwurzacher
3c5a80c27b fsstress-gocryptfs.bash: don't hang if TMPDIR ends in / 
We would hang like this

   ./fsstress-loopback.bash
  Recompile go-fuse loopback: v2.0.3-7-g0b6cbc5
  Waiting for mount: xxxxxxxx^C

if TMPDIR has a trailing /. The reason is that the
paths in /proc/self/mounts are normalized, while
TMPDIR may not be.
 2020-10-03 14:23:37 +02:00
Pavol Rusnak
068692ac31 go mod tidy 2020-09-21 14:15:21 +02:00
Jakob Unterwurzacher
27c92f63be fsstress-gocryptfs.bash: print loopback version & mount path 
To make the used go-fuse version clear in logs,
print it on startup, similar to what we do with gocryptfs.
 2020-09-18 18:31:22 +02:00
Jakob Unterwurzacher
95caa66e0b contrib/mount-ext4-ramdisk.sh: clean up in error case 
Also fix all shellcheck warnings.
 2020-09-18 13:21:07 +02:00
Jakob Unterwurzacher
55fcacfc27 Add contrib/mount-ext4-ramdisk.sh 2020-09-14 19:01:33 +02:00
Jakob Unterwurzacher
af7386713c stress_tests/fsstress-gocryptfs.bash: use rm -Rf for cleanup 
Apparently, kernel 5.8 now allows unprivileged "mknod /tmp/x c 0 0":

	vfs: allow unprivileged whiteout creation
	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.8.9&id=a3c751a50fe6bbe50eb7622a14b18b361804ee0c

which is why rm throws a new prompt:

	rm: remove write-protected character special file '...'?

Use rm -Rf to suppress that.
 2020-09-13 14:14:23 +02:00
Jakob Unterwurzacher
04b46c7adf go.mod: update go-fuse 2020-09-12 18:10:29 +02:00
Pavol Rusnak
1e624a4cc3 Add support for FIDO2 tokens 2020-09-12 18:06:54 +02:00
Jakob Unterwurzacher
6a9c49e9cf tests/plaintextnames: add TestInoReuseEvil 2020-09-12 17:55:37 +02:00
Jakob Unterwurzacher
db61ec5115 tests: add TestInoReuse 2020-09-09 18:18:37 +02:00
Jakob Unterwurzacher
6577f1b146 test_helpers: print warning when not running on ext4 
ext4 reuses inode numbers, tmpfs does not.
 2020-09-09 11:47:17 +02:00
Jakob Unterwurzacher
ac687d5359 v2api: add Darwin xattr support 2020-09-09 11:17:19 +02:00
Jakob Unterwurzacher
8b1df08b8a syscallcompat: add Renameat2 for Darwin 2020-09-09 11:16:29 +02:00
Jakob Unterwurzacher
7c0363dee5 test_helpers: mark MountOrFatal as a Helper() 2020-09-09 11:15:54 +02:00
Jakob Unterwurzacher
570e9baadf manpage: link to exitcodes.go 2020-09-06 11:38:13 +02:00
Jakob Unterwurzacher
993b19c19c gocryptfs -init: fix wrong exit code on non-empty dir 
Fixes https://github.com/rfjakob/gocryptfs/pull/503
 2020-09-06 11:35:25 +02:00
Jakob Unterwurzacher
598e5f385e v2api/reverse: update TODO comment on xattrs 2020-08-30 16:39:46 +02:00
Jakob Unterwurzacher
3806a8cc93 tests/reverse: implement (skipped) xattr test 
v1api reverse mode did not have xattr support,
the v2api version may have at some point. Prep the
test already.
 2020-08-30 16:36:10 +02:00
Jakob Unterwurzacher
d212b246c5 v2api/reverse: implement Lseek 2020-08-16 19:58:47 +02:00
Jakob Unterwurzacher
58a2726977 v2api/reverse: implement Statfs 2020-08-16 19:41:00 +02:00