diff options
Diffstat (limited to 'perl-install/resize_fat/io.pm')
| -rw-r--r-- | perl-install/resize_fat/io.pm | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/perl-install/resize_fat/io.pm b/perl-install/resize_fat/io.pm index cbe0033ca..2c106b87c 100644 --- a/perl-install/resize_fat/io.pm +++ b/perl-install/resize_fat/io.pm @@ -4,6 +4,7 @@ use diagnostics; use strict; use resize_fat::fat; +use c; 1; @@ -24,23 +25,18 @@ sub write($$$$) { sub read_cluster($$) { my ($fs, $cluster) = @_; my $buf; + my $pos = $fs->{cluster_offset} / 512 + $cluster * ($fs->{cluster_size} / 512); - eval { - $buf = &read($fs, - $fs->{cluster_offset} + $cluster * $fs->{cluster_size}, - $fs->{cluster_size}); - }; @$ and die "reading cluster #$cluster failed on device $fs->{fs_name}"; + c::lseek_sector(fileno $fs->{fd}, $pos, 0) or die "seeking to sector #$pos failed on device $fs->{fs_name}"; + sysread $fs->{fd}, $buf, $fs->{cluster_size} or die "reading at sector #$pos failed on device $fs->{fs_name}"; $buf; } sub write_cluster($$$) { my ($fs, $cluster, $buf) = @_; + my $pos = $fs->{cluster_offset} / 512 + $cluster * ($fs->{cluster_size} / 512); - eval { - &write($fs, - $fs->{cluster_offset} + $cluster * $fs->{cluster_size}, - $fs->{cluster_size}, - $buf); - }; @$ and die "writing cluster #$cluster failed on device $fs->{fs_name}"; + c::lseek_sector(fileno $fs->{fd}, $pos, 0) or die "seeking to sector #$pos failed on device $fs->{fs_name}"; + syswrite $fs->{fd}, $buf or die "writing at sector #$pos failed on device $fs->{fs_name}"; } sub read_file($$) { |