/[fuse-comp]/fuse-comp.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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Diff of /fuse-comp.pl

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revision 18 by dpavlin, Mon Jul 9 15:41:01 2007 UTC revision 23 by dpavlin, Mon Jul 9 21:41:58 2007 UTC
# Line 12  use File::Path; Line 12  use File::Path;
12  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
13  use Carp qw/confess/;  use Carp qw/confess/;
14  use IO::File;  use IO::File;
15    use Getopt::Long;
16    
17    my $debug = 0;
18    my $fuse_debug = 0;
19    
20    GetOptions(
21            'debug+' => \$debug,
22            'fuse-debug+' => \$fuse_debug,
23    );
24    
25  my $mount = {  my $mount = {
26          from    => '/tmp/comp',          from    => '/tmp/comp',
# Line 19  my $mount = { Line 28  my $mount = {
28          tmp             => '/dev/shm/comp',          tmp             => '/dev/shm/comp',
29  };  };
30    
31  my $debug = 1;  my $debug = shift @ARGV;
32    
33  my $skip_extensions_regex = qr/\.(?:sw[a-z]|gif|png|jpeg|jpg|avi|rar|zip|bz2|gz|tgz|avi|mpeg|mpg|tmp|temp)$/i;  my $skip_extensions_regex = qr/\.(?:sw[a-z]|gif|png|jpeg|jpg|avi|rar|zip|bz2|gz|tgz|avi|mpeg|mpg|tmp|temp)$/i;
34    
# Line 103  sub x_getdir { Line 112  sub x_getdir {
112    
113  sub file_copy {  sub file_copy {
114          my ( $s_opt, $s_path, $d_opt, $d_path ) = @_;          my ( $s_opt, $s_path, $d_opt, $d_path ) = @_;
115          warn "## file_copy( $s_opt $s_path [",-s $s_path,"] $d_opt $d_path [",-e $d_path ? -s $d_path : 'new',"])\n";          warn "## file_copy( $s_opt $s_path [",-s $s_path,"] $d_opt $d_path [",-e $d_path ? -s $d_path : 'new',"])\n" if $debug;
116          open(my $s, $s_opt, $s_path ) || confess "can't open $s_path: $!\npending = ", dump( $pending );          open(my $s, $s_opt, $s_path ) || confess "can't open $s_path: $!\npending = ", dump( $pending );
117          open(my $d, $d_opt, $d_path ) || confess "can't open $d_path: $!";          open(my $d, $d_opt, $d_path ) || confess "can't open $d_path: $!";
118          my $buff;          my $buff;
# Line 149  sub x_open { Line 158  sub x_open {
158                  trunc => $mode && O_TRUNC,                  trunc => $mode && O_TRUNC,
159          };          };
160          my $path = fixup($file);          my $path = fixup($file);
161          warn "# open( $file, $mode ) pending: ", $pending->{$file}->{open}, " mode $mode: ", dump( $mode_desc )," $path [", -s $path, "]\n";          warn "## open( $file, $mode ) pending: ", $pending->{$file}->{open}, " mode $mode: ", dump( $mode_desc )," $path [", -s $path, "]\n" if $debug;
162          my $fh;          my $fh;
163    
164          my $tmp = $mount->{tmp} . '/' . $file;          my $tmp = $mount->{tmp} . '/' . $file;
# Line 159  sub x_open { Line 168  sub x_open {
168                  my $dest_path = $tmp;                  my $dest_path = $tmp;
169                  $dest_path =~ s!/[^/]+$!!;      #!vim-fix                  $dest_path =~ s!/[^/]+$!!;      #!vim-fix
170                  mkpath $dest_path unless -e $dest_path;                  mkpath $dest_path unless -e $dest_path;
171                  file_copy( '<:gzip', $path, '>', $tmp );                  if ( -s $path ) {
172                            file_copy( '<:gzip', $path, '>', $tmp )
173                    } else {
174                            warn "ERROR: filesystem corruption, $path is zero size\n";
175                    }
176                  $path = $tmp;                  $path = $tmp;
177          }          }
         warn ">>> open abs path: $path [", -e $path ? -s $path : 'new' , "]\n";  
         return -$! unless sysopen($fh , $path, $mode);  
         close($fh);  
178    
179          $pending->{$file}->{path} = $path;          if ( sysopen($fh , $path, $mode) ) {
180          return 0;                  close($fh) || confess "can't close $path: $!";
181                    warn "<<< open $path [", -e $path ? -s $path : 'new' , "]\n";
182                    $pending->{$file}->{path} = $path;
183                    return 0;
184            } else {
185                    warn "ERROR: can't open $path : $!";
186                    return -$!;
187            }
188    
189  }  }
190    
191  sub x_read {  sub x_read {
# Line 232  sub x_rename { Line 250  sub x_rename {
250                  rename $tmp, $new_tmp || confess "can't rename $tmp -> $new_tmp : $!";                  rename $tmp, $new_tmp || confess "can't rename $tmp -> $new_tmp : $!";
251          }          }
252    
253            if (defined( $pending->{$old} )) {
254                    $pending->{$new} = $pending->{$old};
255    
256                    my $path = $pending->{$old}->{path};
257                    $path =~ s/\Q$old\E/$new/;
258                    $pending->{$new}->{path} = $path;
259                    $pending->{$old}->{path} = $path;
260    
261                    #delete( $pending->{$old} );
262            }
263    
264          return $err;          return $err;
265  }  }
266  sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }  sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
# Line 264  sub x_truncate { Line 293  sub x_truncate {
293                  $no_gz =~ s/\.gz$//;                  $no_gz =~ s/\.gz$//;
294                  rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!";                  rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!";
295          }          }
296          warn "## truncate( $file $size ) $path [", -s $path, "]\n";          warn "## truncate( $file $size ) $path [", -s $path, "] = $rv\n" if $debug;
297          $pending->{$file}->{write}++;          $pending->{$file}->{write}++;
298          return $rv;          return $rv;
299  }  }
# Line 302  sub x_release { Line 331  sub x_release {
331                  }                  }
332    
333                  if ( $file =~ $skip_extensions_regex ) {                  if ( $file =~ $skip_extensions_regex ) {
334                          warn "release $file $mode -- uncompressed\n";                          warn "release $file [",-s $path,"] skipped compression\n";
335                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );
336                  } elsif ( -s $path < $min_compress_size ) {                  } elsif ( -s $path < $min_compress_size ) {
337                          warn "release $file -- uncompressed, too small [", -s $path, "]\n";                          warn "release $file [",-s $path,"] uncompressed, too small\n";
338                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );                          file_copy( '<', $path, '>', $dest ) if ( $path ne $dest );
339                  } else {                  } else {
340                          warn "release $file $mode -- compressing\n";                          warn "release $file [",-s $path,"] compressing\n";
341    
342                            my $comp = $dest . '.gz';
343                            file_copy( '<', $path, '>:gzip', $comp );
344    
345                          file_copy( '<', $path, '>:gzip', $dest . '.gz' );                          my ( $size_path, $size_comp ) = ( -s $path, -s $comp );
346    
347                          # FIXME add timeout to remove uncompressed version?                          if ( $size_path <= $size_comp ) {
348                          # FIXME leave uncompressed file if smaller than compressed                                  warn ">>> $size_path <= $size_comp leaving uncompressed\n";
349                          unlink $path || warn "can't remove $path: $!";                                  unlink $comp || warn "can't reamove: $comp: $!";
350                            } else {
351                                    warn ">>> compressed $size_path -> $size_comp ",int(($size_comp * 100) / $size_path),"%\n";
352                                    # FIXME add timeout to remove uncompressed version?
353                                    unlink $path || warn "can't remove $path: $!";
354                            }
355                  }                  }
356          } else {          } else {
357                  warn "release $file, but still used ", $pending->{$file}->{open} , " times, delaying compression\n";                  warn "release $file, but still used ", $pending->{$file}->{open} , " times, delaying compression\n";
# Line 352  Fuse::main( Line 388  Fuse::main(
388          statfs  =>"main::x_statfs",          statfs  =>"main::x_statfs",
389          release =>"main::x_release",          release =>"main::x_release",
390  #       threaded=>1,  #       threaded=>1,
391  #       debug   => 1,          debug   => $fuse_debug,
392  );  );

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