hardcoresushi/libgocryptfs
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333 Commits

Author SHA1 Message Date
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
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
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
ac687d5359 v2api: add Darwin xattr support 2020-09-09 11:17:19 +02:00
Jakob Unterwurzacher
d212b246c5 v2api/reverse: implement Lseek 2020-08-16 19:58:47 +02:00
Jakob Unterwurzacher
6f3cca2cdd v2api: clean up api TODOs 2020-08-16 13:52:27 +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
777b95f82f v2api: delete (most) fusefrontend v1 files 
All the functionality in these files has been reimplemented
for the v2 api. Drop the old files.
 2020-07-26 18:35:12 +02:00
Jakob Unterwurzacher
9cd24d79a2 v2api: implement Lseek 
This also fixes the last remaining tests/fsck failure.
 2020-07-23 22:55:07 +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
7eae35e2d3 v2api: implement ctlsocksrv.Interface 2020-07-17 22:14:40 +02:00
Jakob Unterwurzacher
57d572dbc1 v2api: implement Getxattr, Setxattr, Removexattr, Listxattr 
gocryptfs/tests/xattr passes.
 2020-07-14 19:55:20 +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
0d385846da v2api: call InitSerializer 
If we don't, reads hang with -serialize_reads.
 2020-07-12 15:02:53 +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
735e2aa65b v2api: fix Mkdir crash when using plaintextnames 2020-07-12 13:35:37 +02:00
Jakob Unterwurzacher
b1d631d432 v2api: fix double-lock in truncate 2020-07-12 13:13:24 +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
b0342fae5d v2api: fix TestOpenBackingDir 2020-07-11 20:15:47 +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
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
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