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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
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"-f" looks too much like "--force". The old variant is still
accepted for compatability.
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People will search for "-o" alphabetically, so put it into the
alphabetical option list, even if it is not a real option.
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Requested at https://github.com/rfjakob/gocryptfs/issues/28
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Make it easier to read the password from a file. Internally this
is equivalent to "-extpass /bin/cat FILE".
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For compatability with mount(1), options are also accepted as
"-o COMMA-SEPARATED-OPTIONS" at the end of the command line.
For example, "-o q,zerokey" is equivalent to "-q -zerokey".
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This prevents confusion with the "-o" options that is passed
by mount(1) at the end of the command line.
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Also explain why AES-SIV exists.
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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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This is no change in behavoir, just a clarification in the man page.
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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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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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From the man page:
**-ro**
: Mount the filesystem read-only
Also add a test.
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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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Optimized assembly versions for Go GCM are only available
on amd64.
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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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This pushes back the birthday bound for collisions to make it virtually
irrelevant.
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