tools/fseek_test.c

   1 #define _FILE_OFFSET_BITS 64
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <errno.h>
   5 #include <sys/types.h>
   6 main()
   7 {
   8   FILE *fp ;
   9   long long y ;
  10   int retval ;
  11   int result1 ;
  12 #ifdef TEST_FSEEKO
  13   off_t x ;
  14   off_t result2 ;
  15 #endif
  16 #ifdef TEST_FSEEKO64
  17   long long x ;
  18   int result2 ;
  19 #endif
  20   fp = NULL ;
  21   fp = fopen( "Makefile" , "r" ) ;
  22 #ifdef TEST_FSEEKO
  23   x = 0xffffffff ;
  24   result1 = (sizeof(x) == 8) ;
  25   result2 = fseeko( fp, x, SEEK_SET ) ;
  26 #endif
  27 #ifdef TEST_FSEEKO64
  28   x = 0xffffffffL ;
  29   result1 = (sizeof(x) == 8) ;
  30   result2 = fseeko64( fp, x, SEEK_SET ) ;
  31 #endif
  32   if ( result2 ) perror("error") ;
  33   fprintf(stdout,"pointer is 8 bytes: %s\n",result1?"true":"false") ;
  34   fprintf(stdout,"seek returns correctly: %s\n",!result2?"true":"false") ;
  35   if ( result1 && !result2 ) {
  36     fprintf(stdout,"status: OK\n") ;
  37     retval = 0 ;
  38   } else {
  39     fprintf(stdout,"status: BUMMER\n") ;
  40     retval = 1 ;
  41   }
  42   fclose(fp) ;
  43   exit(retval) ;
  44 }
  45