Mirror of gocryptfs source code on Github http://nuetzlich.net/cgit/gocryptfs/atom?h=v1.4.1 2017-08-16T16:33:00+00:00 2017-08-16T16:33:00+00:00 Jakob Unterwurzacher 2017-08-16T16:33:00+00:00 urn:sha1:312ea32bb70abb93be315d0b7c442d5c4ae571d9 The benchmark that supported the decision for 512-byte prefetching previously lived outside the repo. Let's add it where it belongs so it cannot get lost. 2017-08-15T17:04:02+00:00 Jakob Unterwurzacher 2017-08-15T16:35:30+00:00 urn:sha1:989b88098951e5ad68b66049e59fd2ca475c4711 Getdents avoids calling Lstat on each file. 2017-08-15T17:03:57+00:00 Jakob Unterwurzacher 2017-08-13T19:13:44+00:00 urn:sha1:e50a6a57e57bc3cc925ba9a6e7f4dc1da4da3c84 The Readdir function provided by os is inherently slow because it calls Lstat on all files. Getdents gives us all the information we need, but does not have a proper wrapper in the stdlib. Implement the "Getdents()" wrapper function that calls syscall.Getdents() and parses the returned byte blob to a fuse.DirEntry slice. 2017-08-11T17:02:26+00:00 Jakob Unterwurzacher 2017-08-11T16:42:30+00:00 urn:sha1:0c520845f3623eff28f0277a52e3ccffd928f5c2 Remove the "Masterkey" field from fusefrontend.Args because it should not be stored longer than neccessary. Instead pass the masterkey as a separate argument to the filesystem initializers. Then overwrite it with zeros immediately so we don't have to wait for garbage collection. Note that the crypto implementation still stores at least a masterkey-derived value, so this change makes it harder, but not impossible, to extract the encryption keys from memory. Suggested at https://github.com/rfjakob/gocryptfs/issues/137 2017-08-09T20:00:53+00:00 Jakob Unterwurzacher 2017-08-09T19:44:15+00:00 urn:sha1:e80b5f2049edb794e340da629bce9e44485a4dbb * extend the diriv cache to 100 entries * add special handling for the immutable root diriv The better cache allows to shed some complexity from the path encryption logic (parent-of-parent check). Mitigates https://github.com/rfjakob/gocryptfs/issues/127 2017-08-06T21:14:39+00:00 Jakob Unterwurzacher 2017-08-06T21:12:27+00:00 urn:sha1:75ec94a87a52a7230c9b7d9b3e150a0da2725e58 Dir is like filepath.Dir but returns "" instead of ".". This was already implemented in fusefrontend_reverse as saneDir(). We will need it in nametransform for the improved diriv caching. 2017-08-06T19:59:15+00:00 Jakob Unterwurzacher 2017-08-06T19:59:15+00:00 urn:sha1:5190cc09bbc8afca75986dbb14f09e62eda33b61 Needs some space to grow. renamed: internal/nametransform/diriv_cache.go -> internal/nametransform/dirivcache/dirivcache.go 2017-08-06T19:23:42+00:00 Jakob Unterwurzacher 2017-08-06T19:23:42+00:00 urn:sha1:32611ff97afacb6525015ed322645e12bd296380 This operation has been done three time by identical sections of code. Create a function for it. 2017-07-29T14:15:49+00:00 Jakob Unterwurzacher 2017-07-29T14:13:38+00:00 urn:sha1:d12aa577156101a1c6a05765de751f0a54b58aa8 A directory with a long name has two associated virtual files: the .name file and the .diriv files. These used to get the same inode number: $ ls -di1 * */* 33313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw/gocryptfs.diriv 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw.name With this change we use another prefix (2 instead of 1) for .name files. $ ls -di1 * */* 33313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw 1000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw/gocryptfs.diriv 2000000000033313535 gocryptfs.longname.2togDFouca9mrTwtfF1RNW5DZRAQY8alaR7wO_Xd5Zw.name 2017-07-27T18:31:22+00:00 Jakob Unterwurzacher 2017-07-27T18:31:22+00:00 urn:sha1:d5133ca5ac4f241ff22ef145a3605a9fdb341bb6 This was working until DecryptName switched to returning EBADMSG instead of EINVAL. Add a test to catch the regression next time.