Also, fix "make distcheck", it failed because of the relative path "*.m4":
make[3]: Entering directory `/home/jakob/encfs/encfs-1.8.1/_build/m4'
make[3]: *** No rule to make target `*.m4', needed by `distdir'. Stop.
Actually, "--add-location=file" would be better than "--no-location",
but this flag only supported from gettext 0.19.4 (released Dec 2014).
We can switch to "--add-location=file" onclude gettext 0.19.4 is
the major distributions.
This patch implements the workaround proposed by
https://defuse.ca/audits/encfs.htm to create a --require-macs command
line argument. If this argument is passed, encfs will refuse to mount
with MACs disabled. When creating a filesystem, encfs will force MACs to
be enabled.
Addressed CR comments, and added docs.
It is only needed when "-o allow_other" is specified.
"-o default_permissions" causes libfuse to check file access
in userspace. This costs CPU cycles and causes additional
stat() calls - libfuse has to walk up the whole path to check
for "x" permissions on directories.
This improves "make benchmark-reverse" performance
by 30% when caching is disabled. It also gives a slight
improvement with caches on.
Before:
tests/benchmark-reverse.pl /var/tmp
* rsync 1 (initial copy)... 12179 ms
* rsync 2 (no changes)... 1840 ms
cleaning up... done
tests/benchmark-reverse.pl /var/tmp --nocache
* rsync 1 (initial copy)... 30696 ms
* rsync 2 (no changes)... 10552 ms
cleaning up... done
After:
tests/benchmark-reverse.pl /var/tmp
* rsync 1 (initial copy)... 12095 ms
* rsync 2 (no changes)... 1693 ms
cleaning up... done
tests/benchmark-reverse.pl /var/tmp --nocache
* rsync 1 (initial copy)... 21266 ms
* rsync 2 (no changes)... 6486 ms
cleaning up... done
