include/iso9660.h

   1 #ifndef UTIL_LINUX_ISO_H
   2 #define UTIL_LINUX_ISO_H
   3
   4 #include <stdbool.h>
   5
   6 #include "c.h"
   7
   8 static inline int isonum_721(unsigned char *p)
   9 {
  10         return ((p[0] & 0xff)
  11                 | ((p[1] & 0xff) << 8));
  12 }
  13
  14 static inline int isonum_722(unsigned char *p)
  15 {
  16         return ((p[1] & 0xff)
  17                 | ((p[0] & 0xff) << 8));
  18 }
  19
  20 static inline int isonum_723(unsigned char *p, bool check_match)
  21 {
  22         int le = isonum_721(p);
  23         int be = isonum_722(p + 2);
  24
  25         if (check_match && le != be)
  26                 /* translation is useless */
  27                 warnx("723error: le=%d be=%d", le, be);
  28         return (le);
  29 }
  30
  31 static inline int isonum_731(unsigned char *p)
  32 {
  33         return ((p[0] & 0xff)
  34                 | ((p[1] & 0xff) << 8)
  35                 | ((p[2] & 0xff) << 16)
  36                 | ((p[3] & 0xff) << 24));
  37 }
  38
  39 static inline int isonum_732(unsigned char *p)
  40 {
  41         return ((p[3] & 0xff)
  42                 | ((p[2] & 0xff) << 8)
  43                 | ((p[1] & 0xff) << 16)
  44                 | ((p[0] & 0xff) << 24));
  45 }
  46
  47 static inline int isonum_733(unsigned char *p, bool check_match)
  48 {
  49         int le = isonum_731(p);
  50         int be = isonum_732(p + 4);
  51
  52         if (check_match && le != be)
  53                 /* translation is useless */
  54                 warnx("733error: le=%d be=%d", le, be);
  55         return(le);
  56 }
  57
  58 #endif