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111 lines
2.4 KiB
Perl
Executable File
111 lines
2.4 KiB
Perl
Executable File
# Portable FUSE unmount
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# works on Linux AND OSX
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sub portable_unmount {
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my $crypt = shift;
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my $fusermount = qx(which fusermount);
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chomp($fusermount);
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if(-f $fusermount) {
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qx($fusermount -u "$crypt");
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} else {
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qx(umount "$crypt");
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}
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}
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# Helper function
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# Get the MD5 sum of the file open at the filehandle
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use Digest::MD5 qw(md5_hex);
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sub md5fh
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{
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my $fh_orig = shift;
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open(my $fh, "<&", $fh_orig); # Duplicate the file handle so the seek
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seek($fh, 0, 0); # does not affect the caller
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my $md5 = Digest::MD5->new->addfile($fh)->hexdigest;
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close($fh);
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return $md5;
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}
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# Get the file size from stat() (by file handle or name)
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sub statSize
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{
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my $f = shift;
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my @s = stat($f) or die("stat on '$f' failed");
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return $s[7];
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}
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# Get the file size by read()ing the whole file
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sub readSize
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{
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my $fh = shift;
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seek($fh, 0, 0);
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my $block = 4*1024;
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my $s;
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my $data;
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my $sum = read($fh, $data, $block);
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while ( $s = read($fh, $data, $block) )
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{
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$sum += $s;
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}
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$data = "";
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return $sum;
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}
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# Verify that the size of the file passed by filehandle matches the target size s0
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# Checks both stat() and read()
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sub sizeVerify
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{
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my $ok = 1;
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my $fh = shift;
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my $s0 = shift;
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$ss = statSize($fh);
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if ($s0 != $ss) {
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$ok = 0;
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print("# stat size $ss, expected $s0\n");
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}
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$sr = readSize($fh);
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if ($s0 != $sr) {
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$ok = 0;
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print("# read size $sr, expected $s0\n");
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}
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return $ok;
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}
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# Wait for a file to appear
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use Time::HiRes qw(usleep);
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sub waitForFile
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{
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my $file = shift;
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my $timeout;
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$timeout = shift or $timeout = 5;
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for(my $i = $timeout*10; $i > 0; $i--)
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{
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-f $file and return 1;
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usleep(100000); # 0.1 seconds
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}
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print "# timeout waiting for '$file' to appear\n";
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return 0;
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}
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# writeZeroes($filename, $size)
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# Write zeroes of size $size to file $filename
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sub writeZeroes
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{
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my $filename = shift;
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my $size = shift;
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open(my $fh, ">", $filename);
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my $bs = 4096; # 4 KiB
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my $block = "\0" x $bs;
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my $remain;
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for($remain = $size; $remain >= $bs; $remain -= $bs)
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{
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print($fh $block) or BAIL_OUT("Could not write to $filename: $!");
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}
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if($remain > 0)
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{
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$block = "\0" x $remain;
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print($fh $block) or BAIL_OUT("Could not write to $filename: $!");
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}
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}
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# As this file will be require()'d, it needs to return true
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return 1;
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