60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
// vfs.h
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// Author: Josh Holtrop
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// Date: 03/11/04
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// Modified: 03/16/04
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#ifndef __HOS_VFS__
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#define __HOS_VFS__ __HOS_VFS__
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#include "hos_defines.h"
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#define VFS_LABEL_LENGTH 8
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typedef struct
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{
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void *diskDevice; //pointer to device-dependent structure
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int length; //size of the volume in bytes
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int deviceType; //one of VFS_DISK_TYPES
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int fsType; //one of VFS_FS_TYPES
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char label[VFS_LABEL_LENGTH]; //descriptive volume label
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void *link; //link to next volume in linked list
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} Volume;
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typedef struct
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{
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dword location; //location used by disk driver
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dword dataLocation; //location used by disk driver
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dword position; //read/write position in file
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dword attributes; //read/write
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dword fileSize; //number of bytes the file takes
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Volume *vol; //what volume this file is on
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} FILE;
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typedef struct
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{
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char *device;
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char *mount;
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void *mp;
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} MountPoint;
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#define FILE_READ 1
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#define FILE_WRITE 2
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#define FILE_READ_WRITE 3
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enum VFS_DISK_TYPES {VFS_NODISK, VFS_RD, VFS_FD, VFS_HD, VFS_LOOP, VFS_NUM_DISK_TYPES};
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enum VFS_FS_TYPES {VFS_NOFS, VFS_VFAT, VFS_EXT2, VFS_NUM_FS_TYPES};
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void vfs_init();
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Volume *vfs_newVolume();
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Volume *vfs_getLastVolume();
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int vfs_readSector(Volume *vol, dword sector, byte *buffer);
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int vfs_writeSector(Volume *vol, dword sector, byte *buffer);
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int vfs_readSectorn(Volume *vol, dword sector, byte *buffer, int n);
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int vfs_writeSectorn(Volume *vol, dword sector, byte *buffer, int n);
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int vfs_readFileBlock(Volume *vol, char *file, dword start, byte *buffer, dword blockSize);
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int vfs_writeFileBlock(Volume *vol, char *file, dword start, byte *buffer, dword blockSize);
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#endif
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