gocryptfs/cryptfs/names_diriv.go, branch xattr_user_buffer

Major refactoring: Split up "cryptfs" into several internal packages

2016-02-06T18:22:35+00:00

"git status" for reference: deleted: cryptfs/cryptfs.go deleted: cryptfs/names_core.go modified: integration_tests/cli_test.go modified: integration_tests/helpers.go renamed: cryptfs/config_file.go -> internal/configfile/config_file.go renamed: cryptfs/config_test.go -> internal/configfile/config_test.go renamed: cryptfs/config_test/.gitignore -> internal/configfile/config_test/.gitignore renamed: cryptfs/config_test/PlaintextNames.conf -> internal/configfile/config_test/PlaintextNames.conf renamed: cryptfs/config_test/StrangeFeature.conf -> internal/configfile/config_test/StrangeFeature.conf renamed: cryptfs/config_test/v1.conf -> internal/configfile/config_test/v1.conf renamed: cryptfs/config_test/v2.conf -> internal/configfile/config_test/v2.conf renamed: cryptfs/kdf.go -> internal/configfile/kdf.go renamed: cryptfs/kdf_test.go -> internal/configfile/kdf_test.go renamed: cryptfs/cryptfs_content.go -> internal/contentenc/content.go new file: internal/contentenc/content_api.go renamed: cryptfs/content_test.go -> internal/contentenc/content_test.go renamed: cryptfs/file_header.go -> internal/contentenc/file_header.go renamed: cryptfs/intrablock.go -> internal/contentenc/intrablock.go renamed: cryptfs/address_translation.go -> internal/contentenc/offsets.go new file: internal/cryptocore/crypto_api.go renamed: cryptfs/gcm_go1.4.go -> internal/cryptocore/gcm_go1.4.go renamed: cryptfs/gcm_go1.5.go -> internal/cryptocore/gcm_go1.5.go renamed: cryptfs/nonce.go -> internal/cryptocore/nonce.go renamed: cryptfs/openssl_aead.go -> internal/cryptocore/openssl_aead.go renamed: cryptfs/openssl_benchmark.bash -> internal/cryptocore/openssl_benchmark.bash renamed: cryptfs/openssl_test.go -> internal/cryptocore/openssl_test.go new file: internal/nametransform/name_api.go new file: internal/nametransform/names_core.go renamed: cryptfs/names_diriv.go -> internal/nametransform/names_diriv.go renamed: cryptfs/names_noiv.go -> internal/nametransform/names_noiv.go renamed: cryptfs/names_test.go -> internal/nametransform/names_test.go new file: internal/nametransform/pad16.go renamed: cryptfs/log.go -> internal/toggledlog/log.go renamed: cryptfs/log_go1.4.go -> internal/toggledlog/log_go1.4.go renamed: cryptfs/log_go1.5.go -> internal/toggledlog/log_go1.5.go modified: main.go modified: masterkey.go modified: pathfs_frontend/file.go modified: pathfs_frontend/file_holes.go modified: pathfs_frontend/fs.go modified: pathfs_frontend/fs_dir.go modified: pathfs_frontend/names.go modified: test.bash

Rename DirIVCacheEnc to just DirIVCache

2016-02-06T11:27:55+00:00

...and unexport dirIVCache

Convert fdLock to an RWMutex and protect the whole transaction

2016-01-24T23:51:28+00:00

...against concurrent closes. The testcase (set -e; while true; do truncate -s $RANDOM b; done) & (set -e; while true; do truncate -s $RANDOM b; done) & uncovered lots of unnecessary RMW failures that were the result of concurrent closes. With this patch, the only remaining error is "Truncate on forgotten file" that is probably caused by a problem in the go-fuse lib ( https://github.com/hanwen/go-fuse/issues/95 )

Downgrade "gocryptfs.diriv not found" warning if the directory was deleted

2016-01-24T18:40:53+00:00

The directory may have been concurrently deleted or moved. Failure to read the diriv is not an error in that case. Downgrading the message to debug.

Add EME filename encryption & enable it by default

2015-12-08T15:17:04+00:00

fallocate the space needed for the file header beforehand

2015-12-06T14:05:52+00:00

This makes sure writing to a file fails early if the underlying filesystem does not support fallocate. It also prevents partial header write due to ENOSPC.

Run go fmt

2015-11-29T20:55:20+00:00

Add single-element cache for DirIV lookup

2015-11-29T20:41:38+00:00

Another 3x performance boost for applications that walk the directory tree. Excerpt from performance.txt: VERSION UNTAR LS RM v0.4 48 1.5 5 v0.5-rc1 56 7 19 v0.5-rc1-1 54 4.1 9 v0.5-rc1-2 45 1.7 3.4 <---- THIS VERSION

OpenDir performance: Read DirIV once and reuse it for all names

2015-11-29T19:03:37+00:00

Formerly, we called decryptPath for every name. That resulted in a directory walk that reads in all diriv files on the way. Massive improvement for RM and LS (check performance.txt for details) VERSION UNTAR RM LS v0.4 48 5 1.5 v0.5-rc1 56 19 7 v0.5-rc1-1 54 9 4.1 <---- THIS VERSION

diriv: fix readdir

2015-11-28T17:39:45+00:00

It decrypted all file names using the root directory iv