src/tests/userprog/write-boundary.c

   1 /* Writes data spanning two pages in virtual address space,
   2    which must succeed. */
   3
   4 #include <string.h>
   5 #include <syscall.h>
   6 #include "tests/userprog/boundary.h"
   7 #include "tests/userprog/sample.inc"
   8 #include "tests/lib.h"
   9 #include "tests/main.h"
  10
  11 void
  12 test_main (void)
  13 {
  14   int handle;
  15   int byte_cnt;
  16   char *sample_p;
  17
  18   sample_p = copy_string_across_boundary (sample);
  19
  20   CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
  21
  22   byte_cnt = write (handle, sample_p, sizeof sample - 1);
  23   if (byte_cnt != sizeof sample - 1)
  24     fail ("write() returned %d instead of %zu", byte_cnt, sizeof sample - 1);
  25 }