arch/ppc-sam440/boot/parthenope/src/sfs.h

   1 /* sfs.h */
   2
   3 /* <project_name> -- <project_description>
   4  *
   5  * Copyright (C) 2006 - 2007
   6  *     Giuseppe Coviello <cjg@cruxppc.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef _SFS_H
  24 #define _SFS_H
  25
  26 #include "rdb.h"
  27 #include "device.h"
  28 #include "support.h"
  29
  30 struct SfsBlockHeader {
  31         uint32_t id;
  32         uint32_t checksum;
  33         uint32_t ownblock;
  34 };
  35 #define SBH(b) ((struct SfsBlockHeader *) (b))
  36
  37 struct SfsRootBlock {
  38         struct SfsBlockHeader bheader;
  39
  40         uint16_t version;
  41         uint16_t sequencenumber;
  42
  43         uint32_t datecreated;
  44         uint8_t bits;
  45         uint8_t pad1;
  46         uint16_t pad2;
  47
  48         uint32_t reserved1[2];
  49
  50         uint32_t firstbyteh;
  51         uint32_t firstbyte;
  52
  53         uint32_t lastbyteh;
  54         uint32_t lastbyte;
  55
  56         uint32_t totalblocks;
  57         uint32_t blocksize;
  58
  59         uint32_t reserved2[2];
  60         uint32_t reserved3[8];
  61
  62         uint32_t bitmapbase;
  63         uint32_t adminspacecontainer;
  64         uint32_t rootobjectcontainer;
  65         uint32_t extentbnoderoot;
  66
  67         uint32_t reserved4[4];
  68 };
  69 #define SRB(b) ((struct SfsRootBlock *) (b))
  70 #define SRB_ID 0x53465300
  71
  72 struct SfsObject {
  73         uint16_t owneruid;
  74         uint16_t ownergid;
  75         uint32_t objectnode;
  76         uint32_t protection;
  77
  78         union {
  79                 struct {
  80                         uint32_t data;
  81                         uint32_t size;
  82                 } file;
  83
  84                 struct {
  85                         uint32_t hashtable;
  86                         uint32_t firstdirblock;
  87                 } dir;
  88         } object;
  89
  90         uint32_t datemodified;
  91         uint8_t bits;           /* see defines below */
  92
  93         uint8_t name[0];
  94         uint8_t comment[0];
  95 };
  96 #define SO(b) ((struct SfsObject *) (b))
  97 #define SO_ID 0x53465300
  98
  99 #define OTYPE_DELETED (32)
 100 #define OTYPE_LINK    (64)
 101 #define OTYPE_DIR     (128)
 102
 103 struct SfsObjectContainer {
 104         struct SfsBlockHeader bheader;
 105         uint32_t parent;
 106         uint32_t next;
 107         uint32_t previous;
 108         struct SfsObject object[1];
 109 };
 110 #define SOC(b) ((struct SfsObjectContainer *) (b))
 111 #define SOC_ID (('O'<<24)|('B'<<16)|('J'<<8)|'C')
 112
 113 struct BNode {
 114         uint32_t key;
 115         uint32_t data;
 116 };
 117
 118 struct BTreeContainer {
 119         uint16_t nodecount;
 120         uint8_t isleaf;
 121         uint8_t nodesize;
 122
 123         struct BNode bnode[0];
 124 };
 125
 126 struct SfsBNodeContainer {
 127         struct SfsBlockHeader bheader;
 128         struct BTreeContainer btc;
 129 };
 130 #define SBNC(b) ((struct SfsBNodeContainer *) (b))
 131
 132 struct SfsExtentBNode {
 133         uint32_t key;
 134         uint32_t next;
 135         uint32_t prev;
 136         uint16_t blocks;
 137 };
 138
 139 boot_dev_t *sfs_create(struct RdbPartition *partition);
 140
 141 #endif /* _SFS_H */