33 lines
877 B
C
33 lines
877 B
C
|
/* Writes to a file through a mapping, and unmaps the file,
|
||
|
|
then reads the data in the file back using the read system
|
||
|
|
call to verify. */
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <syscall.h>
|
||
|
|
#include "tests/vm/sample.inc"
|
||
|
|
#include "tests/lib.h"
|
||
|
|
#include "tests/main.h"
|
||
|
|
|
||
|
|
#define ACTUAL ((void *) 0x10000000)
|
||
|
|
|
||
|
|
void
|
||
|
|
test_main (void)
|
||
|
|
{
|
||
|
|
int handle;
|
||
|
|
mapid_t map;
|
||
|
|
char buf[1024];
|
||
|
|
|
||
|
|
/* Write file via mmap. */
|
||
|
|
CHECK (create ("sample.txt", strlen (sample)), "create \"sample.txt\"");
|
||
|
|
CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
|
||
|
|
CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
|
||
|
|
memcpy (ACTUAL, sample, strlen (sample));
|
||
|
|
munmap (map);
|
||
|
|
|
||
|
|
/* Read back via read(). */
|
||
|
|
read (handle, buf, strlen (sample));
|
||
|
|
CHECK (!memcmp (buf, sample, strlen (sample)),
|
||
|
|
"compare read data against written data");
|
||
|
|
close (handle);
|
||
|
|
}
|