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Create a branch for cmake bringup.

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svn path=/branches/cmake-bringup/; revision=48236
This commit is contained in:
Amine Khaldi 2010-07-24 18:52:44 +00:00
parent a28e798006
commit c424146e2c
20602 changed files with 0 additions and 1140137 deletions
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68
lib/fslib/ext2lib/Group.c Normal file
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/*
* PROJECT: Mke2fs
* FILE: Group.c
* PROGRAMMER: Matt Wu <mattwu@163.com>
* HOMEPAGE: http://ext2.yeah.net
*/
/* INCLUDES **************************************************************/
#include "Mke2fs.h"
/* DEFINITIONS ***********************************************************/
/* FUNCTIONS *************************************************************/
int test_root(int a, int b)
{
if (a == 0)
return 1;
while (1)
{
if (a == 1)
return 1;
if (a % b)
return 0;
a = a / b;
}
}
bool ext2_bg_has_super(PEXT2_SUPER_BLOCK pExt2Sb, int group_block)
{
if (!(pExt2Sb->s_feature_ro_compat & EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
return true;
if (test_root(group_block, 3) || (test_root(group_block, 5)) ||
test_root(group_block, 7))
return true;
return false;
}
bool ext2_allocate_group_desc(PEXT2_FILESYS Ext2Sys)
{
ULONG size;
size = Ext2Sys->desc_blocks * Ext2Sys->blocksize;
Ext2Sys->group_desc =
(PEXT2_GROUP_DESC)RtlAllocateHeap(RtlGetProcessHeap(), 0, size);
if (Ext2Sys->group_desc)
{
memset(Ext2Sys->group_desc, 0, size);
return true;
}
return false;
}
void ext2_free_group_desc(PEXT2_FILESYS Ext2Sys)
{
if (Ext2Sys->group_desc)
{
RtlFreeHeap(RtlGetProcessHeap(), 0, Ext2Sys->group_desc);
Ext2Sys->group_desc = NULL;
}
}