hardcoresushi/libgocryptfs
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40 Commits

Author SHA1 Message Date
Jakob Unterwurzacher
84e702126a fusefrontend: implement recursive diriv caching 
The new contrib/maxlen.bash showed that we have exponential
runtime with respect to directory depth.

The new recursive diriv caching is a lot smarter as it caches
intermediate lookups. maxlen.bash now completes in a few seconds.

xfstests results same as
2d158e4c82/screenlog.0 :

  Failures: generic/035 generic/062 generic/080 generic/093 generic/099 generic/215 generic/285 generic/319 generic/426 generic/444 generic/467 generic/477 generic/523
  Failed 13 of 580 tests

benchmark.bash results are identical:

  $ ./benchmark.bash
  Testing gocryptfs at /tmp/benchmark.bash.BdQ: gocryptfs v2.0.1-17-g6b09bc0; go-fuse v2.1.1-0.20210611132105-24a1dfe6b4f8; 2021-06-25 go1.16.5 linux/amd64
  /tmp/benchmark.bash.BdQ.mnt is a mountpoint
  WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 0,4821 s, 544 MB/s
  READ:  262144000 bytes (262 MB, 250 MiB) copied, 0,266061 s, 985 MB/s
  UNTAR: 8,280
  MD5:   4,564
  LS:    1,745
  RM:    2,244
 2021-06-25 13:56:53 +02:00
Jakob Unterwurzacher
17f859d3c4 fusefronted: report plaintext size on symlink creation 
gocryptfs 2.0 introduced the regression that the size
reported at symlink creation was the ciphertext size,
which is wrong.

Report the plaintext size.

Fixes https://github.com/rfjakob/gocryptfs/issues/574
 2021-06-06 19:22:16 +02:00
Jakob Unterwurzacher
e48f2377ec syscallcompat: drop obsolete wrappers 
These are now available cross-platform in the unix
package.
 2021-06-05 15:06:30 +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
3b9a1b628b fusefronted: move Create() and Open() to new file 
And deduplicate the code a little.
 2021-03-21 09:31:05 +01:00
Jakob Unterwurzacher
47a4d33f24 fusefrontend: -sharedstorage: fix TestRmwRace failure 
The Open() and Create() paths used different inode numbers,
which broke openfiletable locking against concurred readers.
 2021-03-21 09:02:50 +01:00
Jakob Unterwurzacher
bed60101f4 nametransform: make gocryptfs.diriv and gocryptfs.xxx.name files world-readable 
Make `gocryptfs.diriv` and `gocryptfs.xxx.name` files world-readable to make encrypted backups easier
when mounting via fstab.

Having the files follow chmod/chown of their parent does not seem
to be worth the hassle. The content of the diriv files is not
secret, and both diriv and name files are protected by the
perms of the parent dir.

Fixes https://github.com/rfjakob/gocryptfs/issues/539
 2021-01-10 08:07:10 +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
ac687d5359 v2api: add Darwin xattr support 2020-09-09 11:17:19 +02:00
Jakob Unterwurzacher
ee5ab1cc29 v2api: rename "File2" to just "File" 
Rename the symbols and the files.
 2020-08-16 12:50:33 +02:00
Jakob Unterwurzacher
1867fdaef4 v2api: move helpers from node.go to node_helpers.go 2020-08-01 19:26:42 +02:00
Jakob Unterwurzacher
4572cd2103 v2api: fix missing size translation in Lookup 2020-07-26 19:49:26 +02:00
Jakob Unterwurzacher
49fc3abcb4 v2api: Lookup: use newChild() helper 2020-07-19 13:15:18 +02:00
Jakob Unterwurzacher
6b7ff09373 v2api: Node: make Path() public 
Helpful for fsck.
 2020-07-18 23:40:54 +02:00
Jakob Unterwurzacher
4a0966e79e v2api: Setattr: fill out structure 2020-07-12 21:17:52 +02:00
Jakob Unterwurzacher
ca5acae6f0 v2api: fix Mkfifo 2020-07-12 20:19:29 +02:00
Jakob Unterwurzacher
0fa824933c v2api: properly implement Node.Setattr 
We used to always open a *File2 and letting the *File2
handle Setattr. This does not work it we cannot open the file!

Before:

    $ go test
    2020/07/12 20:14:57 writer: Write/Writev failed, err: 2=no such file or directory. opcode: INTERRUPT
    2020/07/12 20:14:57 writer: Write/Writev failed, err: 2=no such file or directory. opcode: INTERRUPT
    --- FAIL: TestLchown (0.00s)
        matrix_test.go:634: lchown /tmp/gocryptfs-test-parent-1026/014500839/default-plain/symlink: too many levels of symbolic links
    touch: setting times of '/tmp/gocryptfs-test-parent-1026/014500839/default-plain/utimesnano_symlink': Too many levels of symbolic links
    --- FAIL: TestUtimesNanoSymlink (0.00s)
        matrix_test.go:655: exit status 1
    --- FAIL: TestMkfifo (0.00s)
        matrix_test.go:755: file exists
    --- FAIL: TestMagicNames (0.00s)
        matrix_test.go:773: Testing n="gocryptfs.longname.QhUr5d9FHerwEs--muUs6_80cy6JRp89c1otLwp92Cs"
        matrix_test.go:773: Testing n="gocryptfs.diriv"
        matrix_test.go:815: open /tmp/gocryptfs-test-parent-1026/014500839/default-plain/linktarget: permission denied
    --- FAIL: TestChmod (0.00s)
        matrix_test.go:840: chmod 444 -> 000 failed: permission denied
        matrix_test.go:840: chmod 444 -> 111 failed: permission denied
        matrix_test.go:840: chmod 444 -> 123 failed: permission denied
        matrix_test.go:840: chmod 444 -> 321 failed: permission denied
    FAIL
    exit status 1
    FAIL	github.com/rfjakob/gocryptfs/tests/matrix	0.790s

After:

    $ go test
    --- FAIL: TestMkfifo (0.00s)
        matrix_test.go:755: file exists
    --- FAIL: TestMagicNames (0.00s)
        matrix_test.go:773: Testing n="gocryptfs.longname.QhUr5d9FHerwEs--muUs6_80cy6JRp89c1otLwp92Cs"
        matrix_test.go:773: Testing n="gocryptfs.diriv"
        matrix_test.go:815: open /tmp/gocryptfs-test-parent-1026/501766059/default-plain/linktarget: permission denied
    --- FAIL: TestChmod (0.00s)
        matrix_test.go:849: modeHave 0644 != modeWant 0
    FAIL
    exit status 1
    FAIL    github.com/rfjakob/gocryptfs/tests/matrix   0.787s
 2020-07-12 20:17:15 +02:00
Jakob Unterwurzacher
f11432d02a v2api: Getattr: use file handle if passed 2020-07-12 15:08:17 +02:00
Jakob Unterwurzacher
4d99b02279 v2api: Getattr: fix file size 2020-07-12 15:03:42 +02:00
Jakob Unterwurzacher
230d92c4f4 v2api: fix Rename trying to overwrite itself 
We used to do this

  [pid 99182] renameat2(14, "Y_4DAxKvj1QnXmJx2AkrKA", 15, ".", RENAME_NOREPLACE <unfinished ...>

which was not the intention.
 2020-07-12 13:55:24 +02:00
Jakob Unterwurzacher
6196a5b5fe v2api: File2: implement Release, Read, Write, Fsync, Flush, Allocate 
Fortunately, this just means fixing up the function
signatures.
 2020-07-12 12:59:01 +02:00
Jakob Unterwurzacher
d539a4c214 v2api: fix RootNode cast 2020-07-11 20:27:47 +02:00
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
63f68a0fcd v2api: implement Setattr 2020-07-05 20:10:53 +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
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
6aa9f5636f v2api: implement Lookup() 
Compiles, but untested otherwise. No caching.
 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