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/* Child process for syn-read test.
Reads the contents of a test file a byte at a time, in the
hope that this will take long enough that we can get a
significant amount of contention in the kernel file system
code. */
#include <random.h>
#include <stdio.h>
#include <stdlib.h>
#include <syscall.h>
#include "tests/lib.h"
#include "tests/filesys/base/syn-read.h"
const char *test_name = "child-syn-read";
static char buf[BUF_SIZE];
int
main (int argc, const char *argv[])
{
int child_idx;
int fd;
size_t i;
quiet = true;
CHECK (argc == 2, "argc must be 2, actually %d", argc);
child_idx = atoi (argv[1]);
random_init (0);
random_bytes (buf, sizeof buf);
CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
for (i = 0; i < sizeof buf; i++)
{
char c;
CHECK (read (fd, &c, 1) > 0, "read \"%s\"", file_name);
compare_bytes (&c, buf + i, 1, i, file_name);
}
close (fd);
return child_idx;
}
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