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 |
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use Getopt::Long; |
16 |
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|
17 |
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my $debug = 0; |
18 |
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my $fuse_debug = 0; |
19 |
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20 |
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GetOptions( |
21 |
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'debug+' => \$debug, |
22 |
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'fuse-debug+' => \$fuse_debug, |
23 |
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); |
24 |
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|
25 |
my $mount = { |
my $mount = { |
26 |
from => '/tmp/comp', |
from => '/tmp/comp', |
28 |
tmp => '/dev/shm/comp', |
tmp => '/dev/shm/comp', |
29 |
}; |
}; |
30 |
|
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my $debug = 1; |
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|
31 |
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; |
32 |
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|
33 |
# don't compress files smaller than this |
# don't compress files smaller than this |
42 |
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|
43 |
my $pending; |
my $pending; |
44 |
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|
45 |
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sub real_name { |
46 |
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my ( $dir, $name ) = @_; |
47 |
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if ( -e "$dir/${name}.gz" ) { |
48 |
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return "${name}.gz"; |
49 |
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} |
50 |
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return $name; |
51 |
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} |
52 |
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|
53 |
sub fixup { |
sub fixup { |
54 |
my ( $path ) = @_; |
my ( $path ) = @_; |
55 |
my $full = $mount->{from} . '/' . $path; |
return $mount->{from} . '/' . real_name( $mount->{from}, $path ); |
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if ( -e $full . '.gz' ) { |
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return $full . '.gz'; |
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} |
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return $full; |
|
56 |
} |
} |
57 |
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|
58 |
sub original_name { |
sub original_name { |
80 |
return unpack("L", $buff); |
return unpack("L", $buff); |
81 |
} |
} |
82 |
|
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sub unlink_all { |
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my $file = shift; |
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warn "# unlink_all( $file )\n"; |
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my $path = fixup( $file ); |
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unlink $path || return 0; |
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my $tmp = $mount->{tmp} . '/' . $file; |
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unlink $tmp if ( -e $tmp ); |
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delete( $pending->{$file} ); |
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return 1; |
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} |
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|
83 |
sub x_getattr { |
sub x_getattr { |
84 |
my ($file) = fixup(shift); |
my ($file) = fixup(shift); |
85 |
my (@list) = lstat($file); |
my (@list) = lstat($file); |
100 |
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|
101 |
sub file_copy { |
sub file_copy { |
102 |
my ( $s_opt, $s_path, $d_opt, $d_path ) = @_; |
my ( $s_opt, $s_path, $d_opt, $d_path ) = @_; |
103 |
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; |
104 |
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 ); |
105 |
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: $!"; |
106 |
my $buff; |
my $buff; |
146 |
trunc => $mode && O_TRUNC, |
trunc => $mode && O_TRUNC, |
147 |
}; |
}; |
148 |
my $path = fixup($file); |
my $path = fixup($file); |
149 |
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; |
150 |
my $fh; |
my $fh; |
151 |
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|
152 |
my $tmp = $mount->{tmp} . '/' . $file; |
my $tmp = $mount->{tmp} . '/' . $file; |
156 |
my $dest_path = $tmp; |
my $dest_path = $tmp; |
157 |
$dest_path =~ s!/[^/]+$!!; #!vim-fix |
$dest_path =~ s!/[^/]+$!!; #!vim-fix |
158 |
mkpath $dest_path unless -e $dest_path; |
mkpath $dest_path unless -e $dest_path; |
159 |
file_copy( '<:gzip', $path, '>', $tmp ); |
if ( -s $path ) { |
160 |
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file_copy( '<:gzip', $path, '>', $tmp ) |
161 |
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} else { |
162 |
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warn "ERROR: filesystem corruption, $path is zero size\n"; |
163 |
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} |
164 |
$path = $tmp; |
$path = $tmp; |
165 |
} |
} |
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warn ">>> open abs path: $path [", -e $path ? -s $path : 'new' , "]\n"; |
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return -$! unless sysopen($fh , $path, $mode); |
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warn ">>> after open [",-s $path, "]\n"; |
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close($fh); |
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166 |
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|
167 |
$pending->{$file}->{path} = $path; |
if ( sysopen($fh , $path, $mode) ) { |
168 |
return 0; |
close($fh) || confess "can't close $path: $!"; |
169 |
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warn "<<< open $path [", -e $path ? -s $path : 'new' , "]\n"; |
170 |
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$pending->{$file}->{path} = $path; |
171 |
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return 0; |
172 |
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} else { |
173 |
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warn "ERROR: can't open $path -- $!"; |
174 |
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return -$!; |
175 |
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} |
176 |
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|
177 |
} |
} |
178 |
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179 |
sub x_read { |
sub x_read { |
197 |
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|
198 |
sub x_write { |
sub x_write { |
199 |
my ($file,$buf,$off) = @_; |
my ($file,$buf,$off) = @_; |
200 |
$pending->{$file}->{write}++; |
|
201 |
my $rv; |
my $rv; |
202 |
my $path = fixup($file); |
my $path = fixup($file); |
203 |
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205 |
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206 |
return -ENOENT() unless -e $path; |
return -ENOENT() unless -e $path; |
207 |
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208 |
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$path = $pending->{$file}->{path} || confess "no path for $file in ", dump( $pending ); |
209 |
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confess "write into non-existant $path for $file: $!" unless -e $path; |
210 |
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|
211 |
my $fh = new IO::File; |
my $fh = new IO::File; |
212 |
return -ENOSYS() unless open($fh,'+<',$pending->{$file}->{path}); |
return -ENOSYS() unless open($fh,'+<',$path); |
213 |
if($rv = seek( $fh ,$off,SEEK_SET)) { |
if($rv = seek( $fh ,$off,SEEK_SET)) { |
214 |
$rv = print( $fh $buf ); |
$rv = print( $fh $buf ); |
215 |
warn "## ", $pending->{$file}->{path}, " $off ",length( $buf ), "\n" if $debug; |
warn "## write $path offset $off [",length( $buf ), "]\n" if $debug; |
216 |
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$pending->{$file}->{write}++; |
217 |
} |
} |
218 |
$rv = -ENOSYS() unless $rv; |
$rv = -ENOSYS() unless $rv; |
219 |
close($fh); |
close($fh) || warn "can't close $path: $!"; |
220 |
return length($buf); |
return length($buf); |
221 |
} |
} |
222 |
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|
223 |
sub err { return (-shift || -$!) } |
sub err { return (-shift || -$!) } |
224 |
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|
225 |
sub x_readlink { return readlink(fixup(shift)); } |
sub x_readlink { return readlink(fixup(shift)); } |
226 |
sub x_unlink { return unlink_all( shift ) ? 0 : -$! } |
|
227 |
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sub x_unlink { |
228 |
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my $file = shift; |
229 |
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my $path = fixup( $file ); |
230 |
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231 |
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if ( $file =~ m#\Q/.fuse_hidden\E# ) { |
232 |
|
return unlink $path ? 0 : -$1; |
233 |
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} |
234 |
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235 |
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warn "# unlink( $file )\n"; |
236 |
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237 |
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unlink $path || return 0; |
238 |
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239 |
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my $tmp = $mount->{tmp} . '/' . $file; |
240 |
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unlink $tmp if ( -e $tmp ); |
241 |
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242 |
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delete( $pending->{$file} ); |
243 |
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return 0; |
244 |
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} |
245 |
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246 |
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sub x_symlink { |
247 |
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my ($from,$to) = @_; |
248 |
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|
249 |
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my $from_path = $from; #fixup( $from ); |
250 |
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my $to_path = fixup( $to ); |
251 |
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|
252 |
sub x_symlink { return symlink(shift,fixup(shift)) ? 0 : -$!; } |
my $rv = symlink( $from_path, $to_path ) ? 0 : -$!; |
253 |
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warn "# symlink( $from_path -> $to_path ) = $rv\n" if $debug; |
254 |
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255 |
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my $tmp = $mount->{tmp} . '/' . $from; |
256 |
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if ( -e $tmp ) { |
257 |
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my $tmp_to = $mount->{$tmp} . '/' . $to; |
258 |
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symlink( $tmp, $tmp_to ) || confess "can't symlink $tmp -> $tmp_to: $!"; |
259 |
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} |
260 |
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return $rv; |
261 |
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} |
262 |
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|
263 |
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sub x_link { |
264 |
|
my ($from,$to) = @_; |
265 |
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|
266 |
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my $from_path = fixup($from); |
267 |
|
my $to_path = fixup($to); |
268 |
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$to_path .= '.gz' if ( $from_path =~ m/\.gz$/ && $to_path !~ m/\.gz$/ ); |
269 |
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|
270 |
|
my $rv = link( $from_path, $to_path ) ? 0 : -$!; |
271 |
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272 |
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warn "# link( $from_path -> $to_path ) = $rv\n" if $debug; |
273 |
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|
274 |
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return $rv; |
275 |
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} |
276 |
|
|
277 |
sub x_rename { |
sub x_rename { |
278 |
my ($old) = fixup(shift); |
my ($old,$new) = @_; |
279 |
my ($new) = fixup(shift); |
my $old_path = fixup($old); |
280 |
my ($err) = rename($old,$new) ? 0 : -ENOENT(); |
my $new_path = fixup($new); |
281 |
|
$new_path .= '.gz' if ( $old_path =~ m/\.gz$/ && $new_path !~ m/\.gz$/ ); |
282 |
|
|
283 |
|
my $err = rename($old_path,$new_path) ? 0 : -ENOENT(); |
284 |
|
warn "## rename( $old_path => $new_path ) = $err\n"; |
285 |
|
|
286 |
|
my $tmp = $mount->{tmp} . '/' . $old; |
287 |
|
if ( -e $tmp ) { |
288 |
|
if ( $new =~ m#\Q/.fuse_hidden\E# ) { |
289 |
|
unlink $tmp || confess "can't unlink $tmp for $new\n"; |
290 |
|
} else { |
291 |
|
my $new_tmp = $mount->{tmp} . '/' . $new; |
292 |
|
rename $tmp, $new_tmp || confess "can't rename $tmp -> $new_tmp : $!"; |
293 |
|
} |
294 |
|
} |
295 |
|
|
296 |
|
if (defined( $pending->{$old} )) { |
297 |
|
$pending->{$new} = $pending->{$old}; |
298 |
|
|
299 |
|
my $path = $pending->{$old}->{path}; |
300 |
|
$path =~ s/\Q$old\E/$new/; |
301 |
|
$pending->{$new}->{path} = $path; |
302 |
|
|
303 |
|
delete( $pending->{$old} ); |
304 |
|
warn "## tweaking pending to ", dump( $pending ) if $debug; |
305 |
|
} |
306 |
|
|
307 |
return $err; |
return $err; |
308 |
} |
} |
|
sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! } |
|
309 |
|
|
310 |
sub x_chown { |
sub x_chown { |
311 |
my ($path) = fixup(shift); |
my ($file,$uid,$gid) = @_; |
312 |
|
my $path = fixup($file); |
313 |
print "nonexistent $path\n" unless -e $path; |
print "nonexistent $path\n" unless -e $path; |
|
my ($uid,$gid) = @_; |
|
314 |
# perl's chown() does not chown symlinks, it chowns the symlink's |
# perl's chown() does not chown symlinks, it chowns the symlink's |
315 |
# target. it fails when the link's target doesn't exist, because |
# target. it fails when the link's target doesn't exist, because |
316 |
# the stat64() syscall fails. |
# the stat64() syscall fails. |
317 |
# this causes error messages when unpacking symlinks in tarballs. |
# this causes error messages when unpacking symlinks in tarballs. |
318 |
my ($err) = syscall(&SYS_lchown,$path,$uid,$gid,$path) ? -$! : 0; |
my ($err) = syscall(&SYS_lchown,$path,$uid,$gid,$path) ? -$! : 0; |
319 |
|
|
320 |
|
my $tmp = $mount->{tmp} . '/' . $file; |
321 |
|
syscall(&SYS_lchown,$file,$uid,$gid,$path) if -e $tmp; |
322 |
|
|
323 |
return $err; |
return $err; |
324 |
} |
} |
325 |
|
|
339 |
$no_gz =~ s/\.gz$//; |
$no_gz =~ s/\.gz$//; |
340 |
rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!"; |
rename $path, $no_gz || confess "can't rename $path -> $no_gz: $!"; |
341 |
} |
} |
342 |
warn "## truncate( $file $size ) $path [", -s $path, "]\n"; |
warn "## truncate( $file $size ) $path [", -s $path, "] = $rv\n" if $debug; |
343 |
$pending->{$file}->{write}++; |
$pending->{$file}->{write}++; |
344 |
|
|
345 |
|
my $tmp = $mount->{tmp} . '/' . $file; |
346 |
|
truncate( $tmp, $size ) if -e $tmp; |
347 |
|
|
348 |
return $rv; |
return $rv; |
349 |
} |
} |
350 |
sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; } |
sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; } |
364 |
|
|
365 |
sub x_release { |
sub x_release { |
366 |
my ( $file, $mode ) = @_; |
my ( $file, $mode ) = @_; |
367 |
|
|
368 |
|
if ( $file =~ m#\Q/.fuse_hidden\E# ) { |
369 |
|
warn "release internal $file\n" if $debug; |
370 |
|
delete( $pending->{$file} ); |
371 |
|
return 0; |
372 |
|
} |
373 |
|
|
374 |
if ( ! defined( $pending->{$file} ) ) { |
if ( ! defined( $pending->{$file} ) ) { |
375 |
warn "release $file, NO PENDING DATA\n"; |
warn "release $file, NO PENDING DATA\n"; |
376 |
return 0; |
return 0; |
388 |
} |
} |
389 |
|
|
390 |
if ( $file =~ $skip_extensions_regex ) { |
if ( $file =~ $skip_extensions_regex ) { |
391 |
warn "release $file $mode -- uncompressed\n"; |
warn "release $path [",-s $path,"] skipped compression\n"; |
392 |
file_copy( '<', $path, '>', $dest ) if ( $path ne $dest ); |
file_copy( '<', $path, '>', $dest ) if ( $path ne $dest ); |
393 |
} elsif ( -s $path < $min_compress_size ) { |
} elsif ( -s $path < $min_compress_size ) { |
394 |
warn "release $file -- uncompressed, too small [", -s $path, "]\n"; |
warn "release $path [",-s $path,"] uncompressed, too small\n"; |
395 |
file_copy( '<', $path, '>', $dest ) if ( $path ne $dest ); |
file_copy( '<', $path, '>', $dest ) if ( $path ne $dest ); |
396 |
} else { |
} else { |
397 |
warn "release $file $mode -- compressing\n"; |
warn "release $path [",-s $path,"] compressing\n"; |
398 |
|
|
399 |
|
my $comp = $dest . '.gz'; |
400 |
|
file_copy( '<', $path, '>:gzip', $comp ); |
401 |
|
|
402 |
file_copy( '<', $path, '>:gzip', $dest . '.gz' ); |
my ( $size_path, $size_comp ) = ( -s $path, -s $comp ); |
403 |
|
|
404 |
# FIXME add timeout to remove uncompressed version? |
if ( $size_path <= $size_comp ) { |
405 |
# FIXME leave uncompressed file if smaller than compressed |
warn ">>> $size_path <= $size_comp leaving uncompressed\n"; |
406 |
unlink $path || warn "can't remove $path: $!"; |
unlink $comp || confess "can't remove: $comp: $!"; |
407 |
|
} else { |
408 |
|
warn ">>> compressed $size_path -> $size_comp ",int(($size_comp * 100) / $size_path),"%\n"; |
409 |
|
# FIXME add timeout to remove uncompressed version? |
410 |
|
unlink $path || confess "can't remove $path: $!"; |
411 |
|
} |
412 |
} |
} |
413 |
} else { |
} else { |
414 |
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"; |
445 |
statfs =>"main::x_statfs", |
statfs =>"main::x_statfs", |
446 |
release =>"main::x_release", |
release =>"main::x_release", |
447 |
# threaded=>1, |
# threaded=>1, |
448 |
# debug => 1, |
debug => $fuse_debug, |
449 |
); |
); |