fs/iso9660/iso9660.h

   1 /*
   2  *
   3  * (c) 2005-2009 Laurent Vivier <Laurent@vivier.eu>
   4  *
   5  * This file has been copied from EMILE, http://emile.sf.net
   6  *
   7  */
   8
   9 #ifndef __ISO9660_H__
  10 #define __ISO9660_H__
  11
  12 #include "iso9660_fs.h"
  13
  14 typedef struct iso9660_VOLUME {
  15         int ucs_level;
  16         struct iso_primary_descriptor *descriptor;
  17         int fd;
  18 } iso9660_VOLUME;
  19
  20 typedef struct iso9660_DIR {
  21         iso9660_VOLUME *volume;
  22         int extent;
  23         int len;
  24         int index;
  25         unsigned char buffer[ISOFS_BLOCK_SIZE];
  26 } iso9660_DIR;
  27
  28 typedef struct iso9660_FILE {
  29         iso9660_VOLUME *volume;
  30         char *path;
  31         int base;                       /* first extent of the file */
  32         int size;                       /* size of the file */
  33         int offset;
  34         int current;
  35         unsigned char buffer[ISOFS_BLOCK_SIZE];
  36 } iso9660_FILE;
  37
  38 static inline int isonum_721(char *p)
  39 {
  40         return ((p[0] & 0xff)
  41                 | ((p[1] & 0xff) << 8));
  42 }
  43
  44 static inline int isonum_723(char *p)
  45 {
  46         return (isonum_721(p));
  47 }
  48
  49 static inline int isonum_733(char *p)
  50 {
  51         return ((p[0] & 0xff) | ((p[1] & 0xff) << 8) |
  52                 ((p[2] & 0xff) << 16) | ((p[3] & 0xff) << 24));
  53 }
  54
  55 extern struct iso_directory_record *iso9660_get_root_node(iso9660_VOLUME* volume);
  56 extern struct iso_directory_record* iso9660_get_node(iso9660_VOLUME *volume, struct iso_directory_record *dirnode, const char *path);
  57
  58 #endif /* __ISO9660_H__ */