pintos-doxygen/html/write-boundary_8c_source.html

/** Writes data spanning two pages in virtual address space,

   which must succeed. */


#include <string.h>

#include <syscall.h>

#include "tests/userprog/boundary.h"

#include "tests/userprog/sample.inc"

#include "tests/lib.h"

#include "tests/main.h"


void

test_main (void)

{

  int handle;

  int byte_cnt;

  char *sample_p;


  sample_p = copy_string_across_boundary (sample);


  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");


  byte_cnt = write (handle, sample_p, sizeof sample - 1);

  if (byte_cnt != sizeof sample - 1)

    fail ("write() returned %d instead of %zu", byte_cnt, sizeof sample - 1);

}

byte_cnt
static size_t byte_cnt(size_t bit_cnt)
Returns the number of bytes required for BIT_CNT bits.
Definition: bitmap.c:58

copy_string_across_boundary
char * copy_string_across_boundary(const char *src)
Returns a copy of SRC split across the boundary between two pages.
Definition: boundary.c:29

boundary.h

open
int open(const char *file)
Definition: syscall.c:103

write
int write(int fd, const void *buffer, unsigned size)
Definition: syscall.c:121

fail
void fail(const char *format,...)
Definition: lib.c:40

lib.h

CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29

main.h

string.h

test_main
void test_main(void)
Writes data spanning two pages in virtual address space, which must succeed.
Definition: write-boundary.c:12