test/setfilesize.c

   1 #include <exec/types.h>
   2 #include <dos/dosextens.h>
   3 #include <dos/bptr.h>
   4 #include <proto/exec.h>
   5 #include <proto/dos.h>
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <stdlib.h>
   9
  10 int main(int argc, char **argv) {
  11     BPTR fh;
  12     LONG size;
  13
  14     if (argc != 3) {
  15         printf("usage: %s filename newsize\n", argv[0]);
  16         return 1;
  17     }
  18
  19     fh = Open(argv[1], MODE_READWRITE);
  20     if (fh == NULL) {
  21         printf("Open failed: %ld\n", IoErr());
  22         return 0;
  23     }
  24
  25     size = SetFileSize(fh, atol(argv[2]), OFFSET_BEGINNING);
  26     if (size < 0) {
  27         printf("SetFileSize: %ld\n", IoErr());
  28         return 0;
  29     }
  30
  31     printf ("new size is %ld bytes\n", size);
  32
  33     Close(fh);
  34
  35     return 0;
  36 }