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 main()
  10 {
  11   FILE *fp ;
  12   long long y ;
  13   int retval ;
  14   int result1 ;
  15 #ifdef TEST_FSEEKO
  16   off_t x ;
  17   off_t result2 ;
  18 #endif
  19 #ifdef TEST_FSEEKO64
  20   long long x ;
  21   int result2 ;
  22 #endif
  23   fp = NULL ;
  24   fp = fopen( FILE_TO_TEST , "r" ) ;
  25 #ifdef TEST_FSEEKO
  26   x = 0xffffffff ;
  27   result1 = (sizeof(x) == 8) ;
  28   result2 = fseeko( fp, x, SEEK_SET ) ;
  29 #endif
  30 #ifdef TEST_FSEEKO64
  31   x = 0xffffffffL ;
  32   result1 = (sizeof(x) == 8) ;
  33   result2 = fseeko64( fp, x, SEEK_SET ) ;
  34 #endif
  35   if ( result2 ) perror("error") ;
  36   fprintf(stdout,"pointer is 8 bytes: %s\n",result1?"true":"false") ;
  37   fprintf(stdout,"seek returns correctly: %s\n",!result2?"true":"false") ;
  38   if ( result1 && !result2 ) {
  39     fprintf(stdout,"status: OK\n") ;
  40     retval = 0 ;
  41   } else {
  42     fprintf(stdout,"status: BUMMER\n") ;
  43     retval = 1 ;
  44   }
  45   fclose(fp) ;
  46   exit(retval) ;
  47 }
  48