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2016-11-28fusefronted: preserve owner for device nodes and socketsJakob Unterwurzacher
https://github.com/rfjakob/gocryptfs/issues/64
2016-11-28fusefrontend: use Lchown when preserving ownerJakob Unterwurzacher
This prevents (unlikely) symlink race attacks
2016-11-25main, fusefrontend: add "-noprealloc" optionJakob Unterwurzacher
Preallocation is very slow on hdds that run btrfs. Give the user the option to disable it. This greatly speeds up small file operations but reduces the robustness against out-of-space errors. Also add the option to the man page. More info: https://github.com/rfjakob/gocryptfs/issues/63
2016-11-25fusefrontend: coalesce 4kB writesJakob Unterwurzacher
This improves performance on hdds running ext4, and improves streaming write performance on hdds running btrfs. Tar extract slows down on btrfs for some reason. See https://github.com/rfjakob/gocryptfs/issues/63 Benchmarks: encfs v1.9.1 ============ $ ./benchmark.bash -encfs /mnt/hdd-ext4 Testing EncFS at /mnt/hdd-ext4/benchmark.bash.u0g WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,48354 s, 88,4 MB/s UNTAR: 20.79 LS: 3.04 RM: 6.62 $ ./benchmark.bash -encfs /mnt/hdd-btrfs Testing EncFS at /mnt/hdd-btrfs/benchmark.bash.h40 WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,52552 s, 85,9 MB/s UNTAR: 24.51 LS: 2.73 RM: 5.32 gocryptfs v1.1.1-26-g4a7f8ef ============================ $ ./benchmark.bash /mnt/hdd-ext4 Testing gocryptfs at /mnt/hdd-ext4/benchmark.bash.1KG WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,55782 s, 84,1 MB/s UNTAR: 22.23 LS: 1.47 RM: 4.17 $ ./benchmark.bash /mnt/hdd-btrfs Testing gocryptfs at /mnt/hdd-btrfs/benchmark.bash.2t8 WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 6,87206 s, 19,1 MB/s UNTAR: 69.87 LS: 1.52 RM: 5.33 gocryptfs v1.1.1-32 =================== $ ./benchmark.bash /mnt/hdd-ext4 Testing gocryptfs at /mnt/hdd-ext4/benchmark.bash.Qt3 WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 1,22577 s, 107 MB/s UNTAR: 23.46 LS: 1.46 RM: 4.67 $ ./benchmark.bash /mnt/hdd-btrfs/ Testing gocryptfs at /mnt/hdd-btrfs//benchmark.bash.XVk WRITE: 131072000 bytes (131 MB, 125 MiB) copied, 3,68735 s, 35,5 MB/s UNTAR: 116.87 LS: 1.84 RM: 6.34
2016-11-17Fix golint warnings, add helper scriptJakob Unterwurzacher
2016-11-17fusefrontend: get the file ID from the open files tableJakob Unterwurzacher
This fixes the problem that a truncate can reset the file ID without the other open FDs noticing it.
2016-11-17fusefrontend: upgrade wlockMap to use device AND inode numberJakob Unterwurzacher
If there are multiple filesystems backing the gocryptfs filesystems inode numbers are not guaranteed to be unique.
2016-11-10ctlsock: implement EncryptPath for reverse mode, add testsJakob Unterwurzacher
2016-11-10ctlsock: add initial limited implementationJakob Unterwurzacher
At the moment, in forward mode you can only encrypt paths and in reverse mode you can only decrypt paths.
2016-11-01Add support for unpadded base64 filenames, "-raw64"Jakob Unterwurzacher
Through base64.RawURLEncoding. New command-line parameter "-raw64".
2016-10-30fusefrontend: drop atime workaroundsJakob Unterwurzacher
The fix at https://github.com/hanwen/go-fuse/pull/131 has been merged. Drop the workarounds and re-enable the tests.
2016-10-28fusefronted: more concise corrupt block log messageJakob Unterwurzacher
Calculating the block offset is easy enough, even more now that gocryptfs-xray exists.
2016-10-28fusefronted: optimize NFS streaming writes by saving one Stat()Jakob Unterwurzacher
Stat() calls are expensive on NFS as they need a full network round-trip. We detect when a write immediately follows the last one and skip the Stat in this case because the write cannot create a file hole. On my (slow) NAS, this takes the write speed from 24MB/s to 41MB/s.
2016-10-25fusefrontend: move hole padding check out of Write()Jakob Unterwurzacher
The details of the hole handling don't have to be in Write, so move it away.
2016-10-25fusefrontend: rename "createsHole" to clearer "createsCiphertextHole"Jakob Unterwurzacher
...and add comments for what is happening.
2016-10-24Fix misspellingsJakob Unterwurzacher
Close https://github.com/rfjakob/gocryptfs/issues/54
2016-10-19tests: add 1980.tar.gz extract testJakob Unterwurzacher
Test that we get the right timestamp when extracting a tarball. Also simplify the workaround in doTestUtimesNano() and fix the fact that it was running no test at all.
2016-10-19lint fixesJakob Unterwurzacher
2016-10-16fusefrontend: Utimens: one more band-aidJakob Unterwurzacher
Revert once https://github.com/hanwen/go-fuse/pull/131 is merged.
2016-10-16fusefrontend: Utimens: ugly band-aid for nil pointer crash in go-fuseJakob Unterwurzacher
Crash is described at https://github.com/rfjakob/gocryptfs/issues/48 . Revert this once https://github.com/hanwen/go-fuse/pull/131 is merged.
2016-10-16fusefrontend: log missing gocryptfs.dirivJakob Unterwurzacher
This can happen during normal operation when the directory has been deleted concurrently. But it can also mean that the gocryptfs.diriv is missing due to an error, so log the event at "info" level.
2016-10-10fusefrontend: Also preserve the owner in MkdirJakob Unterwurzacher
This already worked for files but was missing for dirs.
2016-10-08reverse: make gocryptfs.conf mapping plaintextnames-awareJakob Unterwurzacher
Only in plaintextnames-mode AND with the config file at the default location it will be mapped into the mountpoint. Also adds a test for that.
2016-10-04lint fixesValient Gough
2016-09-29reverse: use per-purpose nonce generationJakob Unterwurzacher
Also pull all the deterministic nonce code into fusefrontend_reverse to greatly simplify the normal code path.
2016-09-25Implement changes proposed by gosimple.Jakob Unterwurzacher
Also delete the unused "dirIVNameStruct", found by deadcode.
2016-09-25nametransform: delete unused function DecryptPathDirIVJakob Unterwurzacher
2016-09-25contentenc: rename constant "IVBitLen" to "DefaultIVBits" and clarify commentJakob Unterwurzacher
128-bit IVs are NOT used everywhere.
2016-09-25contentenc: add "ExternalNonce" modeJakob Unterwurzacher
This will be used for strong symlink encryption in reverse mode.
2016-09-25fusefrontend: handle Readlink directlyJakob Unterwurzacher
Calling into go-fuse's loopbackFileSystem does not add any value here.
2016-09-25contentenc: add GCM-SIV supportJakob Unterwurzacher
Also add ReverseDummyNonce nonce generation.
2016-09-25cryptocore: add support for GCM-SIVJakob Unterwurzacher
2016-09-25fusefrontend: relay Utimens to go-fuseJakob Unterwurzacher
Commit af5441dcd9033e81da43ab77887a7b5aac693ab6 has caused a regression ( https://github.com/rfjakob/gocryptfs/issues/35 ) that is fixed by this commit. The go-fuse library by now has all the syscall wrappers in place to correctly handle Utimens, also for symlinks. Instead of duplicating the effort here just call into go-fuse. Closes #35
2016-08-09fusefrontend: use NsecToTimespec() for UtimensJakob Unterwurzacher
This fixes a build problem on 32-bit hosts: internal/fusefrontend/file.go:400: cannot use a.Unix() (type int64) as type int32 in assignment internal/fusefrontend/file.go:406: cannot use m.Unix() (type int64) as type int32 in assignment It also enables full nanosecond timestamps for dates after 1970.
2016-07-06Add godoc comments to all internal packagesJakob Unterwurzacher
2016-07-03syscallcompat: OSX: add Mknodat wrapperJakob Unterwurzacher
Protip: find naked *at syscalls using: git grep "syscall." | grep "at(" | grep -v syscallcompat
2016-07-03syscallcompat: OSX: add Unlinkat wrapperJakob Unterwurzacher
Also, replace remaining naked syscall.Openat calls.
2016-07-03fusefrontend: downgrade Renameat log message to debugJakob Unterwurzacher
2016-07-03syscallcompat: OSX: add Renamat wrapperJakob Unterwurzacher
Adds a poor man's renameat implementation for OSX.
2016-07-03syscallcompat: OSX: add Fallocate and Openat wrappersJakob Unterwurzacher
...and convert all calls to syscall.{Fallocate,Openat} to syscallcompat . Both syscalls are not available on OSX. We emulate Openat and just return EOPNOTSUPP for Fallocate.
2016-07-03syscallcompat: move syscall wrapper to their own packageJakob Unterwurzacher
We will get more of them as OSX also lacks support for openat.
2016-07-03nametransform: hide detailed padding error behind the debug flagJakob Unterwurzacher
unPad16 returns detailed errors including the position of the incorrect bytes. Kill a possible padding oracle by lumping everything into a generic error. The detailed error is only logged if debug is active.
2016-07-02fusefrontend: add fallocate supportJakob Unterwurzacher
Mode=0 (default) and mode=1 (keep size) are supported. The patch includes test cases and the whole thing passed xfstests. Fixes https://github.com/rfjakob/gocryptfs/issues/1 .
2016-07-02fusefronted: move Truncate() and Allocate() to their own fileJakob Unterwurzacher
These are large complicated implementations that will share some code.
2016-07-02contentenc: rename PlaintextRange and CiphertextRangeJakob Unterwurzacher
The name could be misunderstood and actually caused a bug: doWrite used to always preallocate 4128 instead of the actual data length.
2016-07-01fusefrontend: coalesce grows in Truncate()Jakob Unterwurzacher
We were growing the file block-by-block which was pretty inefficient. We now coalesce all the grows into a single Ftruncate. Also simplifies the code! Simplistic benchmark: Before: $ time truncate -s 1000M foo real 0m0.568s After: $ time truncate -s 1000M foo real 0m0.205s
2016-07-01fusefrontend: better comments for TruncateJakob Unterwurzacher
2016-06-30fusefrontend: handle dir-overwrites-dir on XFSJakob Unterwurzacher
XFS returns a different error code if you try to overwrite a non-empty directory with a directory: XFS: mv: cannot move ‘foo’ to ‘bar/foo’: File exists ext4: mv: cannot move 'foo' to 'bar/foo': Directory not empty So have EEXIST trigger the Rmdir logic as well. Fixes issue #20 Link: https://github.com/rfjakob/gocryptfs/issues/20
2016-06-27fusefrontend: fix PlaintextNames versions of Mkdir, RmdirJakob Unterwurzacher
The "!fs.args.DirIV" special case was removed by b17f0465c7 but that, by accident, also removed the handling for PlaintextNames. Re-add it as an explicit PlaintextNames special case. Also adds support for removing directories that miss their gocryptfs.diriv file for some reason.
2016-06-26main, fusefrontend: enable suid functionalityJakob Unterwurzacher
FUSE filesystems are mounted with "nosuid" by default. If we run as root, we can use device files by passing the opposite mount option, "suid". Also we have to use syscall.Chmod instead of os.Chmod because the portability translation layer "syscallMode" messes up the sgid and suid bits. Fixes 70% of the failures in xfstests generic/193. The remaining are related to truncate, but we err on the safe side: $ diff -u tests/generic/193.out /home/jakob/src/fuse-xfstests/results//generic/193.out.bad [...] check that suid/sgid bits are cleared after successful truncate... with no exec perm before: -rwSr-Sr-- -after: -rw-r-Sr-- +after: -rw-r--r--
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