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use Carp; |
use Carp; |
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use Data::Dumper; |
use Data::Dumper; |
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our $VERSION = '0.07'; |
our $VERSION = '0.07'; |
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# block size for this filesystem |
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use constant BLOCK => 1024; |
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=head1 NAME |
=head1 NAME |
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Fuse::DBI - mount your database as filesystem and use it |
Fuse::DBI - mount your database as filesystem and use it |
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print Dumper($arg); |
print Dumper($arg); |
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unless ($self->fuse_module_loaded) { |
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print STDERR "no fuse module loaded. Trying sudo modprobe fuse!\n"; |
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system "sudo modprobe fuse" || die "can't modprobe fuse using sudo!\n"; |
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} |
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carp "mount needs 'dsn' to connect to (e.g. dsn => 'DBI:Pg:dbname=test')" unless ($arg->{'dsn'}); |
carp "mount needs 'dsn' to connect to (e.g. dsn => 'DBI:Pg:dbname=test')" unless ($arg->{'dsn'}); |
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carp "mount needs 'mount' as mountpoint" unless ($arg->{'mount'}); |
carp "mount needs 'mount' as mountpoint" unless ($arg->{'mount'}); |
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my $self = shift; |
my $self = shift; |
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if ($self->{'mount'} && $self->is_mounted) { |
if ($self->{'mount'} && $self->is_mounted) { |
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system "fusermount -u ".$self->{'mount'}." 2>&1 >/dev/null" || return 0; |
system "( fusermount -u ".$self->{'mount'}." 2>&1 ) >/dev/null" || |
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system "sudo umount ".$self->{'mount'} || |
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return 0; |
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return 1; |
return 1; |
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} |
} |
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} |
} |
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my %files; |
my %files; |
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my %dirs; |
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sub read_filenames { |
sub read_filenames { |
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my $self = shift; |
my $self = shift; |
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# first, entry is assumed to be file |
# first, entry is assumed to be file |
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if ($d) { |
if ($d) { |
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$files{$d} = { |
$files{$d} = { |
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size => $dirs{$d}++, |
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mode => 0755, |
mode => 0755, |
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type => 0040 |
type => 0040 |
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}; |
}; |
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} |
} |
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} |
} |
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print "found ",scalar(keys %files)-scalar(keys %dirs)," files, ",scalar(keys %dirs), " dirs\n"; |
print "found ",scalar(keys %files)," files\n"; |
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} |
} |
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$file =~ s,^/,,; |
$file =~ s,^/,,; |
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$file = '.' unless length($file); |
$file = '.' unless length($file); |
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return -ENOENT() unless exists($files{$file}); |
return -ENOENT() unless exists($files{$file}); |
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my ($size) = $files{$file}{size} || 1; |
my ($size) = $files{$file}{size} || BLOCK; |
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my ($dev, $ino, $rdev, $blocks, $gid, $uid, $nlink, $blksize) = (0,0,0,1,0,0,1,1024); |
my ($dev, $ino, $rdev, $blocks, $gid, $uid, $nlink, $blksize) = (0,0,0,int(($size+BLOCK-1)/BLOCK),0,0,1,BLOCK); |
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my ($atime, $ctime, $mtime); |
my ($atime, $ctime, $mtime); |
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$atime = $ctime = $mtime = $files{$file}{ctime} || $ctime_start; |
$atime = $ctime = $mtime = $files{$file}{ctime} || $ctime_start; |
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# 2 possible types of return values: |
# 2 possible types of return values: |
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#return -ENOENT(); # or any other error you care to |
#return -ENOENT(); # or any other error you care to |
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#print(join(",",($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)),"\n"); |
print "getattr($file) ",join(",",($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)),"\n"; |
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return ($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks); |
return ($dev,$ino,$modes,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks); |
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} |
} |
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return 0; |
return 0; |
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} |
} |
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sub e_statfs { return 255, 1, 1, 1, 1, 2 } |
sub e_statfs { |
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my $size = 0; |
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my $inodes = 0; |
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foreach my $f (keys %files) { |
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if ($f !~ /(^|\/)\.\.?$/) { |
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$size += $files{$f}{size} || 0; |
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$inodes++; |
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} |
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print "$inodes: $f [$size]\n"; |
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} |
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$size = int(($size+BLOCK-1)/BLOCK); |
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my @ret = (255, $inodes, 1, $size, $size-1, BLOCK); |
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print "statfs: ",join(",",@ret),"\n"; |
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return @ret; |
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} |
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sub e_unlink { |
sub e_unlink { |
571 |
my $file = filename_fixup(shift); |
my $file = filename_fixup(shift); |
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if (exists( $dirs{$file} )) { |
# if (exists( $dirs{$file} )) { |
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print "unlink '$file' will re-read template names\n"; |
# print "unlink '$file' will re-read template names\n"; |
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print Dumper($fuse_self); |
# print Dumper($fuse_self); |
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$$fuse_self->{'read_filenames'}->(); |
# $$fuse_self->{'read_filenames'}->(); |
577 |
return 0; |
# return 0; |
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} elsif (exists( $files{$file} )) { |
if (exists( $files{$file} )) { |
579 |
print "unlink '$file' will invalidate cache\n"; |
print "unlink '$file' will invalidate cache\n"; |
580 |
read_content($file,$files{$file}{id}); |
read_content($file,$files{$file}{id}); |
581 |
return 0; |
return 0; |