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Fuse perl bindings ================== Fuse is combination of Linux kernel module and user space library which enables you to write user-space filesystems. This module enables you to write filesystems using perl. Additional file-systems using Fuse module are released on CPAN using Fuse:: namespace. Currently that includes only Fuse::DBI which allows you to mount database as file system, but there will be more. This is a pre-production release. It seems to work quite well. In fact, I can't find any problems with it whatsoever. If you do, I want to know. INSTALLATION To install this module type the standard commands as root: perl Makefile.PL make make test make install DEPENDENCIES This module requires the FUSE C library and the FUSE kernel module. See http://fuse.sourceforge.net/ If you intend to use FUSE in threaded mode, you need a version of Perl which has been compiled with USE_ITHREADS. Then, you need to use threads and threads::shared. COPYRIGHT AND LICENCE This is contributed to the FUSE project by Mark Glines <email@example.com>, and is therefore subject to the same license and copyright as FUSE itself. Please see the AUTHORS and COPYING files from the FUSE distribution for more information. EXAMPLES There are a few example scripts. You can find them in the examples/ subdirectory. These are: * example.pl, a simple "Hello world" type of script * loopback.pl, a filesystem loopback-device. like fusexmp from the main FUSE dist, it simply recurses file operations into the real filesystem. Unlike fusexmp, it only re-shares files under the /tmp/test directory. * rmount.pl, an NFS-workalike which tunnels through SSH. It requires an account on some ssh server (obviously), with public-key authentication enabled. (if you have to type in a password, you don't have this. man ssh_keygen.). Copy rmount_remote.pl to your home directory on the remote machine, and create a subdir somewhere, and then run it like: ./rmount.pl host /remote/dir /local/dir * rmount_remote.pl, a ripoff of loopback.pl meant to be used as a backend for rmount.pl. BUGS At time of writing, Perl (5.8.7) did not support shared subroutine references. Symptoms include a cryptic error message like "Invalid value for shared scalar" from Fuse.pm. Until this is fixed, if you use threaded mode, you need to use symbolic references (i.e. passing "main::cb" instead of \&cb). This doesn't allow things like closures, lexical subs and that sort of thing, but it does work for me. The current test framework seems to work well, but the underlying mount/ unmount infrastructure is a crock. I am not pleased with that code. While most things work, I do still have a TODO list: * need to sort out cleaner mount semantics for the test framework Currently tests have been attempted and succeeded on: * Ubuntu 10.10/amd64 * Ubuntu 11.04/amd64 * Debian 5.0/powerpc * CentOS 5.6/amd64 * NetBSD 5.1/i386 * NetBSD 5.1/amd64 * FreeBSD 8.2/i386 * FreeBSD 8.2/amd64 * MacOS X 10.6.7 Note that on NetBSD, there are several bugs in libpuffs and librefuse which prevent some tests from succeeding. There are fixes in NetBSD's MAIN branch, specifically revisions 1.26 and 1.27 on src/lib/libpuffs/subr.c, which correct the issues that cause the test failures. However, there is still a bug in librefuse that causes readdir() to only be called once. We will be addressing this with the appropriate developers in the near future. Also note that on NetBSD and FreeBSD, extended attributes do not work. These are specifics related to the FUSE implementations on those platforms.