From 97acae38970adddb6f753cfce325532b94e2bd12 Mon Sep 17 00:00:00 2001
From: Francois Pons <fpons@mandriva.com>
Date: Wed, 9 Feb 2000 13:33:42 +0000
Subject: *** empty log message ***

---
 perl-install/resize_fat/any.pm         | 25 ++++++++++++++++---------
 perl-install/resize_fat/boot_sector.pm |  1 +
 perl-install/resize_fat/c_rewritten.xs | 18 +++++++++---------
 perl-install/resize_fat/fat.pm         |  7 ++-----
 perl-install/resize_fat/info_sector.pm |  1 +
 5 files changed, 29 insertions(+), 23 deletions(-)

(limited to 'perl-install/resize_fat')

diff --git a/perl-install/resize_fat/any.pm b/perl-install/resize_fat/any.pm
index 47f15558b..63f154008 100644
--- a/perl-install/resize_fat/any.pm
+++ b/perl-install/resize_fat/any.pm
@@ -38,7 +38,7 @@ sub last_used($) {
 
     #- count in negative so absolute value count back to 2.
     foreach (-($fs->{nb_clusters}+1)..-2) { return -$_ if resize_fat::c_rewritten::flag(-$_) }
-    return 2;
+    die "any: empty FAT table";
 }
 #- patch to get the function last_unmoveable that return the last unmoveable cluster of a fs.
 sub last_unmoveable($) {
@@ -46,7 +46,7 @@ sub last_unmoveable($) {
 
     #- count in negative so absolute value count back to 2.
     foreach (-($fs->{nb_clusters}+1)..-2) { return -$_ if 0x8 & resize_fat::c_rewritten::flag(-$_) }
-    return 2;
+    die "any: empty FAT table";
 }
 
 #- calculates the minimum size of a partition, in physical sectors
@@ -58,10 +58,18 @@ sub min_size($) {
     #- It's done on purpose since we're moving all directories. So at the worse
     #- moment, 2 directories are there, but that way nothing wrong can happen :)
     my $min_cluster_count = max(2 + $count->{used} + $count->{bad} + $count->{dirs}, min_cluster_count($fs));
-    $min_cluster_count = max($min_cluster_count, 2 + last_unmoveable($fs));
+    $min_cluster_count = max($min_cluster_count, last_unmoveable($fs));
+
+    my $size = $min_cluster_count * divide($fs->{cluster_size}, $SECTORSIZE) +
+      divide($fs->{cluster_offset}, $SECTORSIZE) +
+    64*1024*1024 / $SECTORSIZE; #- help with such more sectors (ie 64Mb).
+    
+    #- help zindozs again with 512Mb+ at least else partition is ignored.
+    if ($resize_fat::isFAT32) {
+        $size = max($size, 524*1024*1024 / $SECTORSIZE);
+    }
+    $size;
 
-    $min_cluster_count * divide($fs->{cluster_size}, $SECTORSIZE) +
-	divide($fs->{cluster_offset}, $SECTORSIZE);
 }
 #- calculates the maximum size of a partition, in physical sectors
 sub max_size($) {
@@ -76,7 +84,7 @@ sub max_size($) {
 sub used_size($) {
     my ($fs) = @_;
 
-    my $used_cluster_count = max(2 + last_used($fs), min_cluster_count($fs));
+    my $used_cluster_count = max(last_used($fs), min_cluster_count($fs));
 
     $used_cluster_count * divide($fs->{cluster_size}, $SECTORSIZE) +
 	divide($fs->{cluster_offset}, $SECTORSIZE);
@@ -103,10 +111,9 @@ sub flag_clusters {
 	$nb_dirs += $nb if $type == $DIRECTORY;
 	0;
     };
-    resize_fat::c_rewritten::allocate_fat_flag($fs->{nb_clusters} + 2);
 
-    #- patch to reset contents of memory allocated by allocate_fat_flag
-    foreach (0..$fs->{nb_clusters} + 1) { resize_fat::c_rewritten::set_flag($_, 0) }
+    #- this must call allocate_fat_flag that zeroes the buffer allocated.
+    resize_fat::c_rewritten::allocate_fat_flag($fs->{nb_clusters} + 2);
 
     resize_fat::directory::traverse_all($fs, $f);
     $fs->{clusters}{count}{dirs} = $nb_dirs;
diff --git a/perl-install/resize_fat/boot_sector.pm b/perl-install/resize_fat/boot_sector.pm
index 48e2a8d4e..0ca110af8 100644
--- a/perl-install/resize_fat/boot_sector.pm
+++ b/perl-install/resize_fat/boot_sector.pm
@@ -9,6 +9,7 @@ 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
diff --git a/perl-install/resize_fat/c_rewritten.xs b/perl-install/resize_fat/c_rewritten.xs
index 5aebb1ffb..eb3e314dd 100644
--- a/perl-install/resize_fat/c_rewritten.xs
+++ b/perl-install/resize_fat/c_rewritten.xs
@@ -35,11 +35,11 @@ read_fat(fd, offset, size, magic)
   if (lseek(fd, offset, SEEK_SET) != offset ||
       read(fd, fat, size) != size) {
     free(fat); fat = NULL;
-    croak("reading FAT failed");
+    croak("read_fat: reading FAT failed");
   }
   if (magic != *(unsigned char *) fat) {
     free(fat); fat = NULL;
-    croak("FAT has invalid signature");
+    croak("read_fat: FAT has invalid signature");
   }
 }
 
@@ -72,9 +72,9 @@ scan_fat(nb_clusters_, type_size_)
   short *p;
   
   type_size = type_size_; nb_clusters = nb_clusters_;
-  bad_cluster_value = type_size ? 0xffffff7 : 0xfff7;
+  bad_cluster_value = type_size == 32 ? 0xffffff7 : 0xfff7;
 
-  if (type_size % 16) fprintf(stderr, "unable to handle type_size"), exit(1);
+  if (type_size % 16) croak("scan_fat: unable to handle FAT%d", type_size);
   type_size /= 16;
 
   for (p = fat + 2 * type_size; p < fat + type_size * (nb_clusters + 2); p += type_size) {
@@ -111,7 +111,7 @@ void
 allocate_fat_flag(size)
   int size
   CODE:
-  fat_flag_map = malloc(size);
+  fat_flag_map = calloc(size, 1);
 
 int
 checkFat(cluster, type, name)
@@ -151,8 +151,8 @@ void
 allocate_fat_remap(size)
   int size
   CODE:
-  fat_remap_size = size / 4;
-  fat_remap = (unsigned int *) malloc(size);
+  fat_remap_size = size;
+  fat_remap = (unsigned int *) calloc(size, sizeof(unsigned int *));
 
 unsigned int
 fat_remap(cluster)
@@ -161,8 +161,8 @@ fat_remap(cluster)
   if (cluster >= bad_cluster_value) {
     RETVAL = cluster; /* special cases */
   } else {
-    if (fat_remap == NULL) croak("fat_remap NULL in fat_remap");
-    if (cluster >= fat_remap_size) croak("cluster %d >= %d in fat_remap", cluster, fat_remap_size);
+    if (fat_remap == NULL) croak("fat_remap: NULL in fat_remap");
+    if (cluster >= fat_remap_size) croak("fat_remap: cluster %d >= %d in fat_remap", cluster, fat_remap_size);
     RETVAL = fat_remap[cluster];
   }
   OUTPUT:
diff --git a/perl-install/resize_fat/fat.pm b/perl-install/resize_fat/fat.pm
index 33572624a..0d8a32dfa 100644
--- a/perl-install/resize_fat/fat.pm
+++ b/perl-install/resize_fat/fat.pm
@@ -44,11 +44,8 @@ sub allocate_remap {
 	#-log::ld("resize_fat: [$cluster,", &next($fs, $cluster), "...]->$new_cluster...");
     };
 
-    resize_fat::c_rewritten::allocate_fat_remap($fs->{fat_size});
-
-    #- patch to reset contents of memory allocated by allocate_fat_remap
-    #- divide by 4 because fat_size is in bytes.
-    foreach (0..$fs->{fat_size}/4 - 1) { resize_fat::c_rewritten::set_fat_remap($_, 0) }
+    #- this must call allocate_fat_remap that zeroes the buffer allocated.
+    resize_fat::c_rewritten::allocate_fat_remap($fs->{nb_clusters} + 2);
 
     $fs->{last_free_cluster} = 2;
     for ($cluster = 2; $cluster < $fs->{nb_clusters} + 2; $cluster++) {
diff --git a/perl-install/resize_fat/info_sector.pm b/perl-install/resize_fat/info_sector.pm
index 3a6f7cfed..dc459ef6c 100644
--- a/perl-install/resize_fat/info_sector.pm
+++ b/perl-install/resize_fat/info_sector.pm
@@ -6,6 +6,7 @@ use strict;
 use common qw(:system);
 use resize_fat::io;
 
+#- Oops, this will be unresizable on big-endian machine. trapped by signature.
 my $format = "a484 I I I a16";
 my @fields = (
     'unused',
-- 
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