tools/fseek_test.c

   1 #define _FILE_OFFSET_BITS 64
   2 #ifndef FILE_TO_TEST
   3 #define FILE_TO_TEST "Makefile"
   4 #endif
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <errno.h>
   8 #include <sys/types.h>
   9 int
  10 main()
  11 {
  12   FILE *fp ;
  13   long long y ;
  14   int retval ;
  15   int result1 ;
  16 #ifdef TEST_FSEEKO
  17   off_t x ;
  18   off_t result2 ;
  19 #endif
  20 #ifdef TEST_FSEEKO64
  21   long long x ;
  22   int result2 ;
  23 #endif
  24   fp = NULL ;
  25   fp = fopen( FILE_TO_TEST , "r" ) ;
  26 #ifdef TEST_FSEEKO
  27   x = 0xffffffff ;
  28   result1 = (sizeof(x) == 8) ;
  29   result2 = fseeko( fp, x, SEEK_SET ) ;
  30 #endif
  31 #ifdef TEST_FSEEKO64
  32   x = 0xffffffffL ;
  33   result1 = (sizeof(x) == 8) ;
  34   result2 = fseeko64( fp, x, SEEK_SET ) ;
  35 #endif
  36   if ( result2 ) perror("error") ;
  37   fprintf(stdout,"pointer is 8 bytes: %s\n",result1?"true":"false") ;
  38   fprintf(stdout,"seek returns correctly: %s\n",!result2?"true":"false") ;
  39   if ( result1 && !result2 ) {
  40     fprintf(stdout,"status: OK\n") ;
  41     retval = 0 ;
  42   } else {
  43     fprintf(stdout,"status: BUMMER\n") ;
  44     retval = 1 ;
  45   }
  46   fclose(fp) ;
  47   return retval ;
  48 }
  49