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path: root/internal/fusefrontend/root_node.go
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2021-07-31fusefrontend: -sharedstorage: present stable inode numbersJakob Unterwurzacher
Use the Gen field (inode generation) to distinguish hard links while passing the real inode numbers to userspace. Fixes https://github.com/rfjakob/gocryptfs/issues/584
2021-06-26fusefrontend: delete openBackingDirJakob Unterwurzacher
2021-06-25fusefrontend: implement recursive diriv cachingJakob Unterwurzacher
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 https://github.com/rfjakob/fuse-xfstests/blob/2d158e4c82be85c15269af77498e353f928f4fab/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
2021-06-21nametransform: delete NameTransformer interfaceJakob Unterwurzacher
Useless layer of indirection.
2021-06-20Badname file content accessDerDonut
This proposal is the counterpart of the modifications from the `-badname` parameter. It modifies the plain -> cipher mapping for filenames when using `-badname` parameter. The new function `EncryptAndHashBadName` tries to find a cipher filename for the given plain name with the following steps: 1. If `badname` is disabled or direct mapping is successful: Map directly (default and current behaviour) 2. If a file with badname flag has a valid cipher file, this is returned (=File just ends with the badname flag) 3. If a file with a badname flag exists where only the badname flag was added, this is returned (=File cipher name could not be decrypted by function `DecryptName` and just the badname flag was added) 4. Search for all files which cipher file name extists when cropping more and more characters from the end. If only 1 file is found, return this 5. Return an error otherwise This allows file access in the file browsers but most important it allows that you rename files with undecryptable cipher names in the plain directories. Renaming those files will then generate a proper cipher filename One backdraft: When mounting the cipher dir with -badname parameter, you can never create (or rename to) files whose file name ends with the badname file flag (at the moment this is " GOCRYPTFS_BAD_NAME"). This will cause an error. I modified the CLI test function to cover additional test cases. Test [Case 7](https://github.com/DerDonut/gocryptfs/blob/badnamecontent/tests/cli/cli_test.go#L712) cannot be performed since the cli tests are executed in panic mode. The testing is stopped on error. Since the function`DecryptName` produces internal errors when hitting non-decryptable file names, this test was omitted. This implementation is a proposal where I tried to change the minimum amount of existing code. Another possibility would be instead of creating the new function `EncryptAndHashBadName` to modify the signature of the existing function `EncryptAndHashName(name string, iv []byte)` to `EncryptAndHashName(name string, iv []byte, dirfd int)` and integrate the functionality into this function directly. You may allow calling with dirfd=-1 or other invalid values an then performing the current functionality.
2021-06-02nametransform: check name validity on encryptionJakob Unterwurzacher
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.
2021-04-07fusefrontend: make dirCache work for "node itself"Jakob Unterwurzacher
"node itself" can be converted to node + child by ascending one level. Performance gains are spectacular, as will be seen in the next commit.
2021-04-05fusefrontend: print dirCache stats after unmountJakob Unterwurzacher
2021-04-04fs: more idiomatic dirCache struct namingJakob Unterwurzacher
2021-04-03fs: add initial dirfd cachingJakob Unterwurzacher
dirfd caching was temporarily removed when moving to the v2api. Add it back to gain back some lost speed.
2021-03-07v2api: -sharestorage: disable hard link tracking & add testsJakob Unterwurzacher
Hard link tracking was not correctly disabled since the migration to the go-fuse v2 api. Add a test to ensure it stays off. Fixes https://github.com/rfjakob/gocryptfs/issues/525
2020-10-14syscallcompat: retry ops on EINTRJakob Unterwurzacher
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 .
2020-07-14v2api: implement Getxattr, Setxattr, Removexattr, ListxattrJakob Unterwurzacher
gocryptfs/tests/xattr passes.
2020-07-12v2api: call InitSerializerJakob Unterwurzacher
If we don't, reads hang with -serialize_reads.
2020-07-11v2api: implement SymlinkJakob Unterwurzacher
2020-07-04v2api: merge openBackingDir into root_node.goJakob Unterwurzacher
2020-07-04v2api: implement Open()Jakob Unterwurzacher
2020-07-04v2api: implement ReadlinkJakob Unterwurzacher
2020-06-21v2api: implement MkdirJakob Unterwurzacher
2020-06-21v2api: implement CreateJakob Unterwurzacher
2020-06-21v2api: collect RootNode code in root_node.goJakob Unterwurzacher
2020-06-21v2api: implement GetAttr and ReaddirJakob Unterwurzacher