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2023-06-05fusefrontend: sharedstorage: use byte-range lock on file header creationJakob Unterwurzacher
Multiple hosts creating the same file at the same time could have overwritten each other's file header, leading to data corruption. Fix the race by placing a byte-range lock on the file when creating the file header.
2023-05-17fusefrontend: implement our own Access()Jakob Unterwurzacher
Not having Access() means go-fuse emulates it by looking at Getattr(). This works fine most of the time, but breaks down on sshfs, where sshfs-benchmark.bash shows this: gocryptfs/tests$ ./sshfs-benchmark.bash nuetzlich.net working directory: /tmp/sshfs-benchmark.bash.JQC sshfs mounted: nuetzlich.net:/tmp -> sshfs.mnt gocryptfs mounted: sshfs.mnt/sshfs-benchmark.bash.Wrz/gocryptfs.crypt -> gocryptfs.mnt sshfs-benchmark.bash: sshfs gocryptfs-on-sshfs git init 3.98 6.80 rsync 7.71 10.84 rm -R 4.30rm: descend into write-protected directory 'gocryptfs.mnt/git1'? The go-fuse emulation gets it wrong here because sshfs reports permissions but does not enforce them. Implement it ourselves properly.
2023-03-29fusefrontent: report correct size on hard link creationJakob Unterwurzacher
And add a test for it. Fixes https://github.com/rfjakob/gocryptfs/issues/724
2023-03-08speed: GoGCM: start at block size 16Jakob Unterwurzacher
BenchmarkGoGCMBlockSize/16-4 5499200 219.7 ns/op 72.83 MB/s BenchmarkGoGCMBlockSize/32-4 4497284 266.2 ns/op 120.22 MB/s BenchmarkGoGCMBlockSize/64-4 3296336 363.4 ns/op 176.10 MB/s BenchmarkGoGCMBlockSize/128-4 4204794 285.5 ns/op 448.36 MB/s BenchmarkGoGCMBlockSize/256-4 2928472 409.7 ns/op 624.83 MB/s BenchmarkGoGCMBlockSize/512-4 1825164 658.0 ns/op 778.09 MB/s BenchmarkGoGCMBlockSize/1024-4 1000000 1151 ns/op 889.98 MB/s BenchmarkGoGCMBlockSize/2048-4 560275 2135 ns/op 959.47 MB/s BenchmarkGoGCMBlockSize/4096-4 291906 4099 ns/op 999.28 MB/s BenchmarkGoGCMBlockSize/8192-4 148916 8033 ns/op 1019.83 MB/s BenchmarkGoGCMBlockSize/16384-4 75337 15911 ns/op 1029.75 MB/s BenchmarkGoGCMBlockSize/32768-4 37912 31651 ns/op 1035.30 MB/s BenchmarkGoGCMBlockSize/65536-4 19000 64287 ns/op 1019.43 MB/s BenchmarkGoGCMBlockSize/131072-4 9225 127636 ns/op 1026.92 MB/s BenchmarkGoGCMBlockSize/262144-4 4752 252300 ns/op 1039.02 MB/s BenchmarkGoGCMBlockSize/524288-4 2377 504612 ns/op 1038.99 MB/s BenchmarkGoGCMBlockSize/1048576-4 1183 1011637 ns/op 1036.51 MB/s
2023-03-08speed: add per-blocksize GoGCM benchmarksJakob Unterwurzacher
Only visible when you run "go test -bench" like this: $ cd gocryptfs/internal/speed $ go test -bench . goos: linux goarch: amd64 pkg: github.com/rfjakob/gocryptfs/v2/internal/speed cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz BenchmarkStupidGCM-4 202352 5937 ns/op 689.96 MB/s BenchmarkStupidGCMDecrypt-4 206023 5782 ns/op 708.38 MB/s BenchmarkGoGCM-4 291878 4098 ns/op 999.45 MB/s BenchmarkGoGCMBlockSize/1024-4 1000000 1151 ns/op 889.88 MB/s BenchmarkGoGCMBlockSize/2048-4 561182 2134 ns/op 959.60 MB/s BenchmarkGoGCMBlockSize/4096-4 292057 4101 ns/op 998.87 MB/s BenchmarkGoGCMBlockSize/8192-4 149216 8031 ns/op 1020.09 MB/s BenchmarkGoGCMBlockSize/16384-4 75361 15917 ns/op 1029.34 MB/s BenchmarkGoGCMBlockSize/32768-4 37916 31649 ns/op 1035.35 MB/s BenchmarkGoGCMBlockSize/65536-4 19005 63117 ns/op 1038.33 MB/s BenchmarkGoGCMBlockSize/131072-4 9498 126166 ns/op 1038.89 MB/s BenchmarkGoGCMBlockSize/262144-4 4755 252149 ns/op 1039.64 MB/s BenchmarkGoGCMBlockSize/524288-4 2377 504108 ns/op 1040.03 MB/s BenchmarkGoGCMBlockSize/1048576-4 1188 1008675 ns/op 1039.56 MB/s BenchmarkGoGCMDecrypt-4 294664 4059 ns/op 1009.02 MB/s BenchmarkAESSIV-4 46498 25432 ns/op 161.05 MB/s BenchmarkAESSIVDecrypt-4 46908 25509 ns/op 160.57 MB/s BenchmarkXchacha-4 244473 4894 ns/op 836.97 MB/s BenchmarkXchachaDecrypt-4 249710 4798 ns/op 853.75 MB/s BenchmarkStupidXchacha-4 166988 7101 ns/op 576.79 MB/s BenchmarkStupidXchachaDecrypt-4 163093 7240 ns/op 565.72 MB/s BenchmarkStupidChacha-4 184172 6527 ns/op 627.58 MB/s BenchmarkStupidChachaDecrypt-4 179796 6659 ns/op 615.11 MB/s PASS ok github.com/rfjakob/gocryptfs/v2/internal/speed 30.068s
2023-02-21fusefrontend: unbreak isConsecutiveWrite streaming write optimizationJakob Unterwurzacher
Commit 6196a5b5 got the logic inverted, hence we never set the last position markers. Fixes https://github.com/rfjakob/gocryptfs/issues/712
2023-02-21fusefrontend: doWrite: report readFileID errors as I/O errorJakob Unterwurzacher
It used to be reported as "function not implemented", accompanied with this log output: go-fuse: can't convert error type: ParseHeader: header is all-zero. Header hexdump: 000000000000000000000000000000000000 Now we report EIO and log this: doWrite 1372183: corrupt header: ParseHeader: header is all-zero. Header hexdump: 000000000000000000000000000000000000
2023-02-21contentenc: simplify testRange tablesJakob Unterwurzacher
Get rid of this eyesore.
2023-01-08MANPAGE: scryptn: list how much memory is neededJakob Unterwurzacher
Calculated acc. to https://words.filippo.io/the-scrypt-parameters/ , and add benchmarks to double-check the numbers. They match.
2022-12-29make formatJakob Unterwurzacher
Run "make format" using go version go1.19.4 linux/amd64
2022-12-21go.mod: fix jacobsa/crypto build on riscv64Christian Stewart
Replace dependency jacobsa/crypto with a fork with support for riscv64. Issue: https://github.com/rfjakob/gocryptfs/issues/666 Upstream PR: https://github.com/jacobsa/crypto/issues/13 Unaddressed on jacobsa/crypto: https://github.com/jacobsa/crypto/pull/14#issuecomment-1182744229 Signed-off-by: Christian Stewart <christian@paral.in>
2022-08-28Replace remaining golang.org/x/crypto/ssh/terminal ref with golang.org/x/termJakob Unterwurzacher
Fixes https://github.com/rfjakob/gocryptfs/issues/681 Fixes 2a25c3a8fda1f0918fd76687561b1a9c615298b9
2022-08-28make formatJakob Unterwurzacher
2022-08-28Add comment to pass Codacy Static Code AnalysisNekoGirlSAIKOU
2022-08-28Fix invalid -longnamemax for reverse modeNekoGirlSAIKOU
2022-08-15fix minor unreachable code caused by t.FatalAbirdcfly
Signed-off-by: Abirdcfly <fp544037857@gmail.com>
2022-06-26Fix typosYuta Hayashibe
2022-04-02Fix reverse gocryptfs.conf access on macOSVal
Unlike the FUSE implementation on Linux, macFUSE doesn't cache the file attributes from the `LOOKUP` call, so it calls `GETATTR` prior to accessing a file. In the case of the `VirtualConfNode` (reverse config file passthrough), this resulted in the default `GETATTR` implementation returning an empty result, ultimately resulting in a "permission denied" error. 14:44:14.095207 rx 3: GETATTR n2 14:44:14.095229 tx 3: OK, {tA=1s {M0100000 SZ=0 L=0 0:0 0 0:8954996 A 0.000000 M 0.000000 C 0.000000}} 14:44:14.099943 rx 4: ACCESS n2 {u=501 g=20 r} 14:44:14.099990 tx 4: 13=permission denied By impementing `Getattr` (from `fs.NodeGetattrer`) on `VirtualConfNode` this solves the issue.
2022-01-27root_test: add TestOverlay ; syscallcompat: add QuirkNoUserXattrJakob Unterwurzacher
2022-01-22fusefrontend: fix "duplicate case" darwin build failureJakob Unterwurzacher
$ ./crossbuild.bash [...] + GOOS=darwin + GOARCH=amd64 + build + go build -tags without_openssl -o /dev/null internal/fusefrontend/node.go:397:2: duplicate case syscallcompat.RENAME_NOREPLACE (value 0) in switch previous case at internal/fusefrontend/node.go:397:7 internal/fusefrontend/node.go:397:2: duplicate case syscallcompat.RENAME_EXCHANGE (value 0) in switch previous case at internal/fusefrontend/node.go:397:7 internal/fusefrontend/node.go:397:2: duplicate case syscallcompat.RENAME_WHITEOUT (value 0) in switch previous case at internal/fusefrontend/node.go:397:7 internal/fusefrontend/node.go:399:38: duplicate case syscallcompat.RENAME_NOREPLACE | syscallcompat.RENAME_WHITEOUT (value 0) in switch previous case at internal/fusefrontend/node.go:397:7
2022-01-22fusefrontend: support RENAME_WHITEOUT, RENAME_EXCHANGEJakob Unterwurzacher
Both new internal test and xfstests generic/013 are happy. https://github.com/rfjakob/gocryptfs/issues/641
2022-01-10fusefrontend: fix -force_owner not affecting MKNODJakob Unterwurzacher
Fixes https://github.com/rfjakob/gocryptfs/issues/629
2022-01-03readpassword: bubble up errors instead of exiting the processJakob Unterwurzacher
This allows cleanups to happen in the caller, like removing the control socket. Fixes https://github.com/rfjakob/gocryptfs/issues/634
2021-12-19nametransform: fix oversight in commentJakob Unterwurzacher
2021-12-19fusefrontend: allow slashes in xattr namesJakob Unterwurzacher
xattr names have fewer restrictions than file names, relax the validation. Fixes https://github.com/rfjakob/gocryptfs/issues/627
2021-12-11tlog: only enable color if both stderr and stdout are a terminalJakob Unterwurzacher
This gocryptfs -init /does/not/exist 2> err.log used to write escape codes into err.log. Stop doing that.
2021-12-11tlog: respect NO_COLORJakob Unterwurzacher
Fixes https://github.com/rfjakob/gocryptfs/issues/617
2021-12-09darwin: use O_NOFOLLOW for xattr opensJakob Unterwurzacher
Running the tests we have lots of these: Openat: O_NOFOLLOW missing: flags = 0x4 -wpanic turns this warning into a panic: Openat: O_NOFOLLOW missing: flags = 0x4 panic: -wpanic turns this warning into a panic: Openat: O_NOFOLLOW missing: flags = 0x4 goroutine 114 [running]: log.(*Logger).Panic(0x14000118280, {0x14000313ca8, 0x1, 0x1}) log/log.go:224 +0x90 github.com/rfjakob/gocryptfs/v2/internal/tlog.(*toggledLogger).Printf(0x14000076780, {0x1009dc2e8, 0x27}, {0x14000313d18, 0x1, 0x1}) github.com/rfjakob/gocryptfs/v2/internal/tlog/log.go:78 +0x168 github.com/rfjakob/gocryptfs/v2/internal/syscallcompat.Openat(0x9, {0x1009d0747, 0x1}, 0x4, 0x0) github.com/rfjakob/gocryptfs/v2/internal/syscallcompat/sys_common.go:59 +0xf0 github.com/rfjakob/gocryptfs/v2/internal/fusefrontend.(*Node).getXAttr(0x14000142000, {0x1400001c140, 0x3a}) github.com/rfjakob/gocryptfs/v2/internal/fusefrontend/node_xattr_darwin.go:30 +0x8c github.com/rfjakob/gocryptfs/v2/internal/fusefrontend.(*Node).Getxattr(0x14000142000, {0x100a7eba0, 0x1400000c2e8}, {0x14000016348, 0x14}, {0x14000326000, 0x20, 0x4000}) github.com/rfjakob/gocryptfs/v2/internal/fusefrontend/node_xattr.go:65 +0x1ac github.com/hanwen/go-fuse/v2/fs.(*rawBridge).GetXAttr(0x1400008e140, 0x140001901e0, 0x140001133c0, {0x14000016348, 0x14}, {0x14000326000, 0x20, 0x4000}) github.com/hanwen/go-fuse/v2@v2.1.1-0.20210825171523-3ab5d95a30ae/fs/bridge.go:685 +0x114 github.com/hanwen/go-fuse/v2/fuse.doGetXAttr(0x14000144000, 0x14000113200) github.com/hanwen/go-fuse/v2@v2.1.1-0.20210825171523-3ab5d95a30ae/fuse/opcode.go:270 +0x224 github.com/hanwen/go-fuse/v2/fuse.(*Server).handleRequest(0x14000144000, 0x14000113200) github.com/hanwen/go-fuse/v2@v2.1.1-0.20210825171523-3ab5d95a30ae/fuse/server.go:499 +0x214 created by github.com/hanwen/go-fuse/v2/fuse.(*Server).loop github.com/hanwen/go-fuse/v2@v2.1.1-0.20210825171523-3ab5d95a30ae/fuse/server.go:470 +0xac https://github.com/rfjakob/gocryptfs/issues/625
2021-11-01docs: names longer than 175 bytes (not 176) are stored in longnamesJakob Unterwurzacher
Quoting fusefrontend_reverse/node_helpers.go : // File names are padded to 16-byte multiples, encrypted and // base64-encoded. We can encode at most 176 bytes to stay below the 255 // bytes limit: // * base64(176 bytes) = 235 bytes // * base64(192 bytes) = 256 bytes (over 255!) // But the PKCS#7 padding is at least one byte. This means we can only use // 175 bytes for the file name. Noticed by @bailey27 at https://github.com/rfjakob/gocryptfs/issues/499#issuecomment-955790427
2021-10-21nametransform: fix math.MaxInt build failure on older GoJakob Unterwurzacher
Failure is: # github.com/rfjakob/gocryptfs/v2/internal/nametransform internal/nametransform/names.go:47:33: undefined: math.MaxInt math.MaxInt was only introduced in Go 1.17. Use MaxInt32 instead, which is good enough, even on amd64. It only has to be larger than any name we might encounter.
2021-10-21cli: add -longnamemaxJakob Unterwurzacher
Fixes https://github.com/rfjakob/gocryptfs/issues/499
2021-10-21configfile: add LongNameMax supportJakob Unterwurzacher
Feature flag + numeric paramater https://github.com/rfjakob/gocryptfs/issues/499
2021-10-21nametransform: add longNameMax parameterJakob Unterwurzacher
Determines when to start hashing long names instead of hardcoded 255. Will be used to alleviate "name too long" issues some users see on cloud storage. https://github.com/rfjakob/gocryptfs/issues/499
2021-10-21configfile: replace broken switch/case logic with ifJakob Unterwurzacher
Because switch only matches once, we could have missed invalid cases. Replace the switch statements with a straight if rake.
2021-10-15fusefrontend: honor ForceOwner for LOOKUP and CREATE operationsCharles Duffy
2021-09-28cryptocore: simplify declarationsJakob Unterwurzacher
Reported by codacity: internal/cryptocore/cryptocore.go Minor icon MINOR Code Style should omit type AEADTypeEnum from declaration of var BackendAESSIV; it will be inferred from the right-hand side var BackendAESSIV AEADTypeEnum = AEADTypeEnum{"AES-SIV-512", "Go", siv_aead.NonceSize} Minor icon MINOR Code Style should omit type AEADTypeEnum from declaration of var BackendXChaCha20Poly1305; it will be inferred from the right-hand side var BackendXChaCha20Poly1305 AEADTypeEnum = AEADTypeEnum{"XChaCha20-Poly1305", "Go", chacha20poly1305.NonceSizeX} Minor icon MINOR Code Style should omit type AEADTypeEnum from declaration of var BackendXChaCha20Poly1305OpenSSL; it will be inferred from the right-hand side var BackendXChaCha20Poly1305OpenSSL AEADTypeEnum = AEADTypeEnum{"XChaCha20-Poly1305", "OpenSSL", chacha20poly1305.NonceSizeX} Found 2 possible new issues internal/cryptocore/cryptocore.go Minor icon MINOR Code Style should omit type AEADTypeEnum from declaration of var BackendOpenSSL; it will be inferred from the right-hand side var BackendOpenSSL AEADTypeEnum = AEADTypeEnum{"AES-GCM-256", "OpenSSL", 16} Minor icon MINOR Code Style should omit type AEADTypeEnum from declaration of var BackendGoGCM; it will be inferred from the right-hand side var BackendGoGCM AEADTypeEnum = AEADTypeEnum{"AES-GCM-256", "Go", 16}
2021-09-28cryptocore: disentangle algorithm / library implementation nameJakob Unterwurzacher
Used in gocryptfs-xray, and will also be used in -info.
2021-09-14-speed: print cpu modelJakob Unterwurzacher
When somebody posts "gocryptfs -speed" results, they are most helpful together with the CPU model. Add the cpu model to the output. Example: $ ./gocryptfs -speed gocryptfs v2.2.0-beta1-5-g52b0444-dirty; go-fuse v2.1.1-0.20210825171523-3ab5d95a30ae; 2021-09-14 go1.17.1 linux/amd64 cpu: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz; with AES acceleration AES-GCM-256-OpenSSL 862.79 MB/s AES-GCM-256-Go 997.71 MB/s (selected in auto mode) AES-SIV-512-Go 159.58 MB/s XChaCha20-Poly1305-OpenSSL 729.65 MB/s XChaCha20-Poly1305-Go 843.97 MB/s (selected in auto mode)
2021-09-14stupidgcm: add CpuHasAES()Jakob Unterwurzacher
Makes the code clearer, and will be used in the next commit.
2021-09-14-speed: drop useless tab at end of lineJakob Unterwurzacher
2021-09-10inomap: deterministically set root deviceJakob Unterwurzacher
We used to have "first Translate() wins". This is not deterministic, as the LOOKUP for the root directory does not seem to reach us, so the first user LOOKUP would win, which may be on a mountpoint.
2021-09-10cli: drop -forcedecode flagJakob Unterwurzacher
The rewritten openssl backend does not support this flag anymore, and it was inherently dangerour. Drop it (ignored for compatibility)
2021-09-08-speed: show which xchacha implementation is preferredJakob Unterwurzacher
2021-09-08Make -openssl also apply to xchachaJakob Unterwurzacher
Now that stupidgcm supports xchacha, make it available on mount.
2021-09-08stupidgcm: add PreferOpenSSL{AES256GCM,Xchacha20poly1305}Jakob Unterwurzacher
Add PreferOpenSSLXchacha20poly1305, rename PreferOpenSSL -> PreferOpenSSLAES256GCM.
2021-09-07stupidgcm: normalize constructor namingJakob Unterwurzacher
New() -> NewAES256GCM() Also add missing NewChacha20poly1305 constructor in without_openssl.go.
2021-09-07stupidgcm: revamp package documentationJakob Unterwurzacher
Maybe interesting for people following https://github.com/rfjakob/gocryptfs/issues/452
2021-09-07stupidgcm: unexport stupidGCM structJakob Unterwurzacher
No need to have it exported.
2021-09-07stupidgcm: allow zero-length input dataJakob Unterwurzacher
We used to panic in this case because it is useless. But Go stdlib supports it, so we should as well.
2021-09-07stupidgcm: fix build with CGO_ENABLED=1 without_opensslJakob Unterwurzacher
We missed some "// +build" lines
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