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Ongoing effort to reduce the size of main().
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This was frustrating:
$ gocryptfs a b
Password:
Decrypting master key
open a/gocryptfs.conf: permission denied
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Also explain why AES-SIV exists.
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As described at http://software.clapper.org/daemonize/ ,
a daemon should chdir to / and close its FDs.
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Split the block up and add a comment why notifypid is important.
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Build helper script: build-without-openssl.bash
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GCM-SIV is not yet finalized, and the reference implemenation is
painfully slow at about 2 MB/s. Switch to AES-SIV.
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Also delete the unused "dirIVNameStruct", found by deadcode.
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...with stable mappings for hard-linked files.
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Also add ReverseDummyNonce nonce generation.
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Trying to make it more obvious what is happening.
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The main function has gotten way too big.
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... and print a warning that reverse mode is experimental
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$ gocryptfs -version
gocryptfs v0.12-36-ge021b9d-dirty; go-fuse a4c968c; 2016-07-03 go1.6.2
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Also, mention that the shell may save the command line into the
history and reduce "ps -auxwww" to "ps ax" (that's all you need).
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...unless "-nosyslog" is passed.
All gocryptfs messages already go to syslog, but the messages
that the go-fuse lib emits were still printed to stdout.
Fixes issue #13 ( https://github.com/rfjakob/gocryptfs/issues/13 )
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Device files and suid binaries are often not needed when running
gocryptfs as root. As they are potentially dangerous, let the
user enable them explicitely via the new "-o" option instead of
always enabling them when running as root.
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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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FUSE filesystems are mounted with "nodev" by default. If we run as root,
we can use device files by passing the opposite mount option, "dev".
Fixes xfstests generic/184.
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If allow_other is set and we run as root, try to give newly created files to
the right user.
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The GCMIV128 feature flag is already mandatory, dropping the command
line option is the final step.
Completes https://github.com/rfjakob/gocryptfs/issues/29 .
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The EMENames feature flag is already mandatory, dropping the command
line option is the final step.
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The DirIV feature flag is already mandatory, dropping the command
line option is the final step.
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As v0.4 introduced ext4-style feature flags, the on-disk format version
is unlinkely to change. Drop it from the version output to reduce
clutter. Use "gocryptfs -version -debug" to see it.
Add the Go version string because only Go 1.6 and newer have an optimized
AES-GCM implementation. This will help users to understand the performance
of their build.
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This is part of the phase-out of very old filesystems.
See https://github.com/rfjakob/gocryptfs/wiki/Compatibility for
more info.
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From the man page:
**-ro**
: Mount the filesystem read-only
Also add a test.
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tlog is used heavily everywhere and deserves a shorter name.
Renamed using sed magic, without any manual rework:
find * -type f -exec sed -i 's/toggledlog/tlog/g' {} +
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We want to use colored error messages also outside of main,
so let's handle it in the logging package.
The fatal logger now automatically prints red.
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* Supports stdin
* Add tests for extpass and stdin
As per user request at https://github.com/rfjakob/gocryptfs/issues/30
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Warnings were:
main.go:234: declaration of err shadows declaration at main.go:163:
internal/fusefrontend/file.go:401: declaration of err shadows declaration at internal/fusefrontend/file.go:379:
internal/fusefrontend/file.go:419: declaration of err shadows declaration at internal/fusefrontend/file.go:379:
internal/fusefrontend/fs_dir.go:140: declaration of err shadows declaration at internal/fusefrontend/fs_dir.go:97:
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Several fatal errors were just printed to stdout, which
meant they were invisible when running the test suite.
Fix this by introducing toggledlog.Fatal and convert as
follows:
Fatal errors -> toggledlog.Fatal
Warnings -> toggledlog.Warn
Password prompts -> fmt.Fprintf
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It may not have been a "Wrong password" after all.
Also, push down disabling the warning so LoadConfFile() can
warn about things that matter.
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This field is added for the convenience of users and
may help them to identify which gocryptfs version
they need to mount a filesystem.
The same information is essentially contained in FeatureFlags,
but this is more difficult to decode for humans.
It is completely ignored programmatically (also by older gocryptfs
versions).
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Instead, print this:
Using password provided via -extpass.
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... but only if the relative path does not start with "..".
Makes the message easier to grasp. Example:
$ gocryptfs -init -scryptn=10 v0.9
[...]
The filesystem has been created successfully.
Before:
You can now mount it using: gocryptfs /home/jakob/src/github.com/rfjakob/gocryptfs/integration_tests/example_filesystems/v0.9 MOUNTPOINT
After:
You can now mount it using: gocryptfs v0.9 MOUNTPOINT
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As requested in https://github.com/rfjakob/gocryptfs/issues/26 ,
this adds the option to allow other users to access the filesystem.
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Go GCM is faster than OpenSSL if the CPU has AES instructions
and you are running Go 1.6+.
The "-openssl" option now defaults to "auto".
"gocryptfs -debug -version" displays the result of the autodetection.
See https://github.com/rfjakob/gocryptfs/issues/23 for details and
benchmarks.
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Among those one real bug.
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Todo: Rename, Unlink, Rmdir, Mknod, Mkdir
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