Merge branch 'master' of git://localhost/acess2

[tpg/acess2.git] / KernelLand / Modules / Storage / LVM / volumes.c

diff --git a/KernelLand/Modules/Storage/LVM/volumes.c b/KernelLand/Modules/Storage/LVM/volumes.c
index 558a7aa..cf1a60d 100644 (file)
--- a/KernelLand/Modules/Storage/LVM/volumes.c
+++ b/KernelLand/Modules/Storage/LVM/volumes.c
@@ -5,6 +5,7 @@
  * volumes.c
  * - Volume management
  */
+#define DEBUG  1
 #include "lvm_int.h"
 
 // === PROTOTYPES ===
@@ -17,27 +18,75 @@
 // --------------------------------------------------------------------
 int LVM_AddVolumeVFS(const char *Name, int FD)
 {
-       return LVM_AddVolume(Name, (void*)(Uint)FD, LVM_int_VFSReadEmul, LVM_int_VFSWriteEmul);
+       // Assuming 512-byte blocks, not a good idea
+//     return LVM_AddVolume(Name, (void*)(Uint)FD, 512, LVM_int_VFSReadEmul, LVM_int_VFSWriteEmul);
+       return 0;
 }
 
-int LVM_AddVolume(const char *Name, void *Ptr, tLVM_ReadFcn Read, tLVM_WriteFcn Write)
+int LVM_AddVolume(const tLVM_VolType *Type, const char *Name, void *Ptr, size_t BlockSize, size_t BlockCount)
 {
        tLVM_Vol        dummy_vol;
-//     tLVM_Vol        *real_vol;
+       tLVM_Vol        *real_vol;
+       tLVM_Format     *fmt;
+       void    *first_block;
+
+       if( BlockCount == 0 || BlockSize == 0 ) {
+               Log_Error("LVM", "BlockSize(0x%x)/BlockCount(0x%x) invalid in LVM_AddVolume",
+                       BlockSize, BlockCount);
+               return 1;
+       }
 
+       dummy_vol.Type = Type;
        dummy_vol.Ptr = Ptr;
-       dummy_vol.Read = Read;
-       dummy_vol.Write = Write;
+       dummy_vol.BlockCount = BlockCount;
+       dummy_vol.BlockSize = BlockSize;
+
+       // Read the first block of the volume   
+       first_block = malloc(BlockSize);
+       if( !first_block ) {
+               Log_Error("VLM", "LVM_AddVolume - malloc error on %i bytes", BlockSize);
+               return -1;
+       }
+       Type->Read(Ptr, 0, 1, first_block);
        
-       // Determine Type
+       // Determine Format
+       // TODO: Determine format
+       fmt = &gLVM_MBRType;
 
        // Type->CountSubvolumes
+       dummy_vol.nSubVolumes = fmt->CountSubvolumes(&dummy_vol, first_block);
        
        // Create real volume descriptor
+       // TODO: If this needs to be rescanned later, having the subvolume list separate might be an idea
+       real_vol = malloc( sizeof(tLVM_Vol) + strlen(Name) + 1 + sizeof(tLVM_SubVolume*) * dummy_vol.nSubVolumes );
+       real_vol->Next = NULL;
+       real_vol->Type = Type;
+       real_vol->Ptr = Ptr;
+       real_vol->BlockSize = BlockSize;
+       real_vol->BlockCount = BlockCount;
+       real_vol->nSubVolumes = dummy_vol.nSubVolumes;
+       real_vol->SubVolumes = (void*)( real_vol->Name + strlen(Name) + 1 );
+       real_vol->BlockSize = BlockSize;
+       strcpy(real_vol->Name, Name);
+       memset(real_vol->SubVolumes, 0, sizeof(tLVM_SubVolume*) * real_vol->nSubVolumes);
+       // - VFS Nodes
+       memset(&real_vol->DirNode, 0, sizeof(tVFS_Node));
+       real_vol->DirNode.Type = &gLVM_VolNodeType;
+       real_vol->DirNode.ImplPtr = real_vol;
+       real_vol->DirNode.Flags = VFS_FFLAG_DIRECTORY;
+       real_vol->DirNode.Size = -1;
+       memset(&real_vol->VolNode, 0, sizeof(tVFS_Node));
+       real_vol->VolNode.Type = &gLVM_VolNodeType;
+       real_vol->VolNode.ImplPtr = real_vol;
+       real_vol->VolNode.Size = BlockCount * BlockSize;
 
        // Type->PopulateSubvolumes
+       fmt->PopulateSubvolumes(real_vol, first_block);
+       free(first_block);
 
        // Add to volume list
+       gpLVM_LastVolume->Next = real_vol;
+       gpLVM_LastVolume = real_vol;
 
        return 0;
 }
@@ -75,6 +124,10 @@ void LVM_int_SetSubvolume_Anon(tLVM_Vol *Volume, int Index, Uint64 FirstBlock, U
        
        sv->Node.ImplPtr = sv;
        sv->Node.Type = &gLVM_SubVolNodeType;
+       sv->Node.Size = BlockCount * Volume->BlockSize;
+       
+       Log_Log("LVM", "Partition %s/%s - 0x%llx+0x%llx blocks",
+               Volume->Name, sv->Name, FirstBlock, BlockCount);
 }
 
 // --------------------------------------------------------------------
@@ -82,12 +135,12 @@ void LVM_int_SetSubvolume_Anon(tLVM_Vol *Volume, int Index, Uint64 FirstBlock, U
 // --------------------------------------------------------------------
 size_t LVM_int_ReadVolume(tLVM_Vol *Volume, Uint64 BlockNum, size_t BlockCount, void *Dest)
 {
-       return Volume->Read(Volume->Ptr, BlockNum, BlockCount, Dest);
+       return Volume->Type->Read(Volume->Ptr, BlockNum, BlockCount, Dest);
 }
 
 size_t LVM_int_WriteVolume(tLVM_Vol *Volume, Uint64 BlockNum, size_t BlockCount, const void *Src)
 {
-       return Volume->Write(Volume->Ptr, BlockNum, BlockCount, Src);   
+       return Volume->Type->Write(Volume->Ptr, BlockNum, BlockCount, Src);     
 }
 
 int LVM_int_VFSReadEmul(void *Arg, Uint64 BlockStart, size_t BlockCount, void *Dest)