pintos-doxygen/html/read-boundary_8c_source.html

/** Reads 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 *buffer;


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


  buffer = get_boundary_area () - sizeof sample / 2;

  byte_cnt = read (handle, buffer, sizeof sample - 1);

  if (byte_cnt != sizeof sample - 1)

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

  else if (strcmp (sample, buffer))

    {

      msg ("expected text:\n%s", sample);

      msg ("text actually read:\n%s", buffer);

      fail ("expected text differs from actual");

    }

}

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

get_boundary_area
void * get_boundary_area(void)
Returns the beginning of a page.
Definition: boundary.c:18

boundary.h

buffer
static struct intq buffer
Stores keys from the keyboard and serial port.
Definition: input.c:7

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

read
int read(int fd, void *buffer, unsigned size)
Definition: syscall.c:115

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

msg
void msg(const char *format,...)
Definition: lib.c:28

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

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

strcmp
int strcmp(const char *a_, const char *b_)
Finds the first differing characters in strings A and B.
Definition: string.c:73

string.h