Small tweak to README.
Use heredoc instead of quoted text for about, and improve output.
Instead of using newSVpvn(), make an SV around the passed buffer, so we can skip unnecessary data copying. This makes the write buffer SV read-only. The only possible problem is if the write() implementation tries to hang onto the SV; I'm thinking about making a "zerocopy" option flag and using this path only when that option is enabled.
Made alterations to read_buf() wrapper to use an array, instead of a single item, to accommodate different strategies. Altered loopback.pl to support write_buf, and to use the modified read_buf semantics. Also changed open() use in daemonize() inside loopback.pl to 3-operand calling syntax, because it's just the right thing to do.
If a handler function with a name that isn't known is supplied to Fuse::main(), instead of croak, use carp. There are legitimate situations where a function (like one of the FUSE 2.8/2.9 specific ops) is passed, but isn't available due to the underlying libfuse being too old to use them, so they're just not available, and it's better to whine but not die over them.
Exported UTIME_NOW and UTIME_OMIT under 'ALL' and 'utime' tags. Implemented read_buf() operation, and added an implementation in example/loopback.pl. Only tested with memory, not with FD based mode. Fixed fallocate() wrapper to use the correct callback number. Altered testing infrastructure to pass logfile name to loopback.pl, and have it open the logfile, instead of trying to open it in test/s/mount.t, as since loopback.pl's daemonize() reopens stdout/stderr only /dev/null normally, the logfile is worthless. This makes it functional again.
Since the FUSE includes don't have a define for the micro version number, and the 'fallocate' operation is new as of FUSE 2.9.1, add a bit to the Makefile.PL to split up the version number into major, minor and micro numbers and add -D defines for the build to pass them in. Altered fuse_version() to provide separate major/minor/micro version numbers if called in array context. Added support for fallocate() and flock(). Also stubbed out read_buf() and write_buf(). Added support for the 'nopath' and 'utime_omit_ok' flags. Also, added implementations to access the UTIME_NOW and UTIME_OMIT constants. Added basic docs for fallocate() and flock(). Added change note to Changes file.
I ran into an issue where a Fuse mount was correctly reporting the free space in df on FC17, but the same share when viewed from OSX 10.8 over samba was reporting incorrect free space. It appears that some free space calculations use frsize and some use bsize, so for now we should set them to the same value. see: http://article.gmane.org/gmane.comp.file-systems.fuse.devel/3902