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/* Grows a file in chunks while subprocesses read the growing
file. */
#include <random.h>
#include <syscall.h>
#include "tests/filesys/extended/syn-rw.h"
#include "tests/lib.h"
#include "tests/main.h"
char buf[BUF_SIZE];
#define CHILD_CNT 4
void
test_main (void)
{
pid_t children[CHILD_CNT];
size_t ofs;
int fd;
CHECK (create (file_name, 0), "create \"%s\"", file_name);
CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
exec_children ("child-syn-rw", children, CHILD_CNT);
random_bytes (buf, sizeof buf);
quiet = true;
for (ofs = 0; ofs < BUF_SIZE; ofs += CHUNK_SIZE)
CHECK (write (fd, buf + ofs, CHUNK_SIZE) > 0,
"write %d bytes at offset %zu in \"%s\"",
(int) CHUNK_SIZE, ofs, file_name);
quiet = false;
wait_children (children, CHILD_CNT);
}
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