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-rw-r--r--perl-install/resize_fat/boot_sector.pm110
1 files changed, 0 insertions, 110 deletions
diff --git a/perl-install/resize_fat/boot_sector.pm b/perl-install/resize_fat/boot_sector.pm
deleted file mode 100644
index c87328637..000000000
--- a/perl-install/resize_fat/boot_sector.pm
+++ /dev/null
@@ -1,110 +0,0 @@
-package resize_fat::boot_sector; # $Id$
-
-use diagnostics;
-use strict;
-
-use common;
-use resize_fat::io;
-use resize_fat::any;
-use resize_fat::directory;
-
-
-#- Oops, this will be unresizable on big-endian machine. trapped by signature.
-my $format = "a3 a8 S C S C S S C S S S I I I S S I S S a458 S";
-my @fields = (
- 'boot_jump', #- boot strap short or near jump
- 'system_id', #- Name - can be used to special case partition manager volumes
- 'sector_size', #- bytes per logical sector
- 'cluster_size_in_sectors', #- sectors/cluster
- 'nb_reserved', #- reserved sectors
- 'nb_fats', #- number of FATs
- 'nb_root_dir_entries', #- number of root directory entries
- 'small_nb_sectors', #- number of sectors: big_nb_sectors supersedes
- 'media', #- media code
- 'fat16_fat_length', #- sectors/FAT for FAT12/16
- 'sectors_per_track',
- 'nb_heads',
- 'nb_hidden', #- (unused)
- 'big_nb_sectors', #- number of sectors (if small_nb_sectors == 0)
-
-#- FAT32-only entries
- 'fat32_fat_length', #- size of FAT in sectors
- 'fat32_flags', #- bit8: fat mirroring,
- #- low4: active fat
- 'fat32_version', #- minor * 256 + major
- 'fat32_root_dir_cluster',
- 'info_offset_in_sectors',
- 'fat32_backup_sector',
-
-#- Common again...
- 'boot_code', #- Boot code (or message)
- 'boot_sign', #- 0xAA55
-);
-
-1;
-
-
-#- trimfs_init_boot_sector() - reads in the boot sector - gets important info out
-#- of boot sector, and puts in main structure - performs sanity checks - returns 1
-#- on success, 0 on failureparameters: filesystem an empty structure to fill.
-sub read($) {
- my ($fs) = @_;
-
- my $boot = eval { resize_fat::io::read($fs, 0, $SECTORSIZE) }; $@ and die "reading boot sector failed on device $fs->{fs_name}";
- @{$fs}{@fields} = unpack $format, $boot;
-
- $fs->{nb_sectors} = $fs->{small_nb_sectors} || $fs->{big_nb_sectors};
- $fs->{cluster_size} = $fs->{cluster_size_in_sectors} * $fs->{sector_size};
-
- $fs->{boot_sign} == 0xAA55 or die "Invalid signature for a MS-based filesystem.\n";
- $fs->{nb_sectors} < 32 and die "Too few sectors for viable file system\n";
- $fs->{nb_fats} == 2 or cdie "Weird number of FATs: $fs->{nb_fats}, not 2.\n";
- $fs->{sector_size} == 512 or cdie "Strange sector_size != 512\n";
-
- if ($fs->{fat16_fat_length}) {
- #- asserting FAT16, will be verified later on
- $resize_fat::isFAT32 = 0;
- $fs->{fs_type} = 'FAT16';
- $fs->{fs_type_size} = 16;
- $fs->{fat_length} = $fs->{fat16_fat_length};
- $resize_fat::bad_cluster_value = 0xfff7; #- 2**16 - 1
- } else {
- $resize_fat::isFAT32 = 1;
- $fs->{fs_type} = 'FAT32';
- $fs->{fs_type_size} = 32;
- $fs->{fat_length} = $fs->{fat32_fat_length};
-
- $fs->{nb_root_dir_entries} = 0;
- $fs->{info_offset} = $fs->{info_offset_in_sectors} * $fs->{sector_size};
- $resize_fat::bad_cluster_value = 0x0ffffff7;
- }
-
- $fs->{fat_offset} = $fs->{nb_reserved} * $fs->{sector_size};
- $fs->{fat_size} = $fs->{fat_length} * $fs->{sector_size};
- $fs->{root_dir_offset} = $fs->{fat_offset} + $fs->{fat_size} * $fs->{nb_fats};
- $fs->{root_dir_size} = $fs->{nb_root_dir_entries} * resize_fat::directory::entry_size();
- $fs->{cluster_offset} = $fs->{root_dir_offset} + $fs->{root_dir_size} - 2 * $fs->{cluster_size};
-
- $fs->{nb_fat_entries} = divide($fs->{fat_size}, $fs->{fs_type_size} / 8);
-
- #- - 2 because clusters 0 & 1 doesn't exist
- $fs->{nb_clusters} = divide($fs->{nb_sectors} * $fs->{sector_size} - $fs->{cluster_offset}, $fs->{cluster_size}) - 2;
-
- $fs->{dir_entries_per_cluster} = divide($fs->{cluster_size}, psizeof($format));
-
-#- $fs->{nb_clusters} >= resize_fat::any::min_cluster_count($fs) or die "error: not enough sectors for a $fs->{fs_type}\n";
- $fs->{nb_clusters} < resize_fat::any::max_cluster_count($fs) or die "error: too many sectors for a $fs->{fs_type}\n";
-}
-
-sub write($) {
- my ($fs) = @_;
- my $boot = pack($format, @{$fs}{@fields});
-
- eval { resize_fat::io::write($fs, 0, $SECTORSIZE, $boot) }; $@ and die "writing the boot sector failed on device $fs->{fs_name}";
-
- if ($resize_fat::isFAT32) {
- #- write backup
- eval { resize_fat::io::write($fs, $fs->{fat32_backup_sector} * $SECTORSIZE, $SECTORSIZE, $boot) };
- $@ and die "writing the backup boot sector (#$fs->{fat32_backup_sector}) failed on device $fs->{fs_name}";
- }
-}