+#!/usr/bin/perl -w
+use strict;
+
+#use blib;
+use Fuse qw(fuse_get_context);
+use POSIX qw(ENOENT EISDIR EINVAL);
+
+my (%files) = (
+ '.' => {
+ type => 0040,
+ mode => 0755,
+ ctime => time()-1000
+ },
+ a => {
+ cont => "File 'a'.\n",
+ type => 0100,
+ mode => 0755,
+ ctime => time()-2000
+ },
+ b => {
+ cont => "This is file 'b'.\n",
+ type => 0100,
+ mode => 0644,
+ ctime => time()-1000
+ },
+ me => {
+ size => 45,
+ type => 0100,
+ mode => 0644,
+ ctime => time()-1000
+ },
+);
+
+sub filename_fixup {
+ my ($file) = shift;
+ $file =~ s,^/,,;
+ $file = '.' unless length($file);
+ return $file;
+}
+
+sub e_getattr {
+ my ($file) = filename_fixup(shift);
+ $file =~ s,^/,,;
+ $file = '.' unless length($file);
+ return -ENOENT() unless exists($files{$file});
+ my ($size) = exists($files{$file}{cont}) ? length($files{$file}{cont}) : 0;
+ $size = $files{$file}{size} if exists $files{$file}{size};
+ my ($modes) = ($files{$file}{type}<<9) + $files{$file}{mode};
+ my ($dev, $ino, $rdev, $blocks, $gid, $uid, $nlink, $blksize) = (0,0,0,1,0,0,1,1024);
+ my ($atime, $ctime, $mtime);
+ $atime = $ctime = $mtime = $files{$file}{ctime};
+ # 2 possible types of return values:
+ #return -ENOENT(); # or any other error you care to
+ #print(join(",",($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)),"\n");
+ return ($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks);
+}
+
+sub e_getdir {
+ # return as many text filenames as you like, followed by the retval.
+ print((scalar keys %files)."\n");
+ return (keys %files),0;
+}
+
+sub e_readdir {
+use Data::Dumper;
+print Dumper(\@_);
+ my ($path,$offset) = @_;
+ # return as many text filenames as you like, followed by the retval.
+ print((scalar keys %files)."\n");
+ my @a = keys %files;
+ return ($offset<0xFFFF ? $a[0] : undef),1+$offset,0;
+}
+
+sub e_open {
+ # VFS sanity check; it keeps all the necessary state, not much to do here.
+ my ($file) = filename_fixup(shift);
+ print("open called\n");
+ return -ENOENT() unless exists($files{$file});
+ return -EISDIR() if $files{$file}{type} & 0040;
+ print("open ok\n");
+ return 0;
+}
+
+sub e_read {
+ # return an error numeric, or binary/text string. (note: 0 means EOF, "0" will
+ # give a byte (ascii "0") to the reading program)
+ my ($file) = filename_fixup(shift);
+ my ($buf,$off) = @_;
+ return -ENOENT() unless exists($files{$file});
+ if(!exists($files{$file}{cont})) {
+ return -EINVAL() if $off > 0;
+ my $context = fuse_get_context();
+ return sprintf("pid=0x%08x uid=0x%08x gid=0x%08x\n",@$context{'pid','uid','gid'});
+ }
+ return -EINVAL() if $off > length($files{$file}{cont});
+ return 0 if $off == length($files{$file}{cont});
+ return substr($files{$file}{cont},$off,$buf);
+}
+
+sub e_statfs { return 255, 1, 1, 1, 1, 2 }
+
+# If you run the script directly, it will run fusermount, which will in turn
+# re-run this script. Hence the funky semantics.
+my ($mountpoint) = "";
+$mountpoint = shift(@ARGV) if @ARGV;
+Fuse::main(
+ mountpoint=>$mountpoint,
+ getattr=>"main::e_getattr",
+# getdir =>"main::e_getdir",
+# getdir =>"main::e_readdir",
+ readdir=>"main::e_readdir",
+ open =>"main::e_open",
+ statfs =>"main::e_statfs",
+ read =>"main::e_read",
+ threaded=>0
+);