/[fuse.before_github]/perl-llin/examples/example.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /perl-llin/examples/example.pl

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Revision 67 - (show annotations)
Tue Jan 3 16:20:50 2006 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 2511 byte(s)
use Fuse from just compiled blib (again...)
1 #!/usr/bin/perl -w
2 use strict;
3
4 use blib;
5 use Fuse;
6 use POSIX qw(ENOENT EISDIR EINVAL);
7
8 my (%files) = (
9 '.' => {
10 type => 0040,
11 mode => 0755,
12 ctime => time()-1000
13 },
14 a => {
15 cont => "File 'a'.\n",
16 type => 0100,
17 mode => 0755,
18 ctime => time()-2000
19 },
20 b => {
21 cont => "This is file 'b'.\n",
22 type => 0100,
23 mode => 0644,
24 ctime => time()-1000
25 },
26 );
27
28 sub filename_fixup {
29 my ($file) = shift;
30 $file =~ s,^/,,;
31 $file = '.' unless length($file);
32 return $file;
33 }
34
35 sub e_getattr {
36 my ($file) = filename_fixup(shift);
37 $file =~ s,^/,,;
38 $file = '.' unless length($file);
39 return -ENOENT() unless exists($files{$file});
40 my ($size) = exists($files{$file}{cont}) ? length($files{$file}{cont}) : 0;
41 my ($modes) = ($files{$file}{type}<<9) + $files{$file}{mode};
42 my ($dev, $ino, $rdev, $blocks, $gid, $uid, $nlink, $blksize) = (0,0,0,1,0,0,1,1024);
43 my ($atime, $ctime, $mtime);
44 $atime = $ctime = $mtime = $files{$file}{ctime};
45 # 2 possible types of return values:
46 #return -ENOENT(); # or any other error you care to
47 #print(join(",",($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)),"\n");
48 return ($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks);
49 }
50
51 sub e_getdir {
52 # return as many text filenames as you like, followed by the retval.
53 print((scalar keys %files)."\n");
54 return (keys %files),0;
55 }
56
57 sub e_open {
58 # VFS sanity check; it keeps all the necessary state, not much to do here.
59 my ($file) = filename_fixup(shift);
60 print("open called\n");
61 return -ENOENT() unless exists($files{$file});
62 return -EISDIR() unless exists($files{$file}{cont});
63 print("open ok\n");
64 return 0;
65 }
66
67 sub e_read {
68 # return an error numeric, or binary/text string. (note: 0 means EOF, "0" will
69 # give a byte (ascii "0") to the reading program)
70 my ($file) = filename_fixup(shift);
71 my ($buf,$off) = @_;
72 return -ENOENT() unless exists($files{$file});
73 return -EINVAL() if $off > length($files{$file}{cont});
74 return 0 if $off == length($files{$file}{cont});
75 return substr($files{$file}{cont},$off,$buf);
76 }
77
78 sub e_statfs { return 255, 1, 1, 1, 1, 2 }
79
80 # If you run the script directly, it will run fusermount, which will in turn
81 # re-run this script. Hence the funky semantics.
82 my ($mountpoint) = "";
83 $mountpoint = shift(@ARGV) if @ARGV;
84 Fuse::main(
85 mountpoint=>$mountpoint,
86 getattr=>"main::e_getattr",
87 getdir =>"main::e_getdir",
88 open =>"main::e_open",
89 statfs =>"main::e_statfs",
90 read =>"main::e_read",
91 threaded=>0
92 );

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