Exemplo n.º 1
0
void
umain(void)
{
	int r;
	int fileid;
	struct Fd *fd;

	if ((r = fsipc_open("/not-found", O_RDONLY, FVA)) < 0 && r != -E_NOT_FOUND)
		panic("serve_open /not-found: %e", r);
	else if (r == 0)
		panic("serve_open /not-found succeeded!");

	if ((r = fsipc_open("/newmotd", O_RDONLY, FVA)) < 0)
		panic("serve_open /newmotd: %e", r);
	fd = (struct Fd*) FVA;
	if (strlen(msg) != fd->fd_file.file.f_size)
		panic("serve_open returned size %d wanted %d\n", fd->fd_file.file.f_size, strlen(msg));
	cprintf("serve_open is good\n");

	if ((r = fsipc_map(fd->fd_file.id, 0, UTEMP)) < 0)
		panic("serve_map: %e", r);
	if (strecmp(UTEMP, msg) != 0)
		panic("serve_map returned wrong data");
	cprintf("serve_map is good\n");

	if ((r = fsipc_close(fd->fd_file.id)) < 0)
		panic("serve_close: %e", r);
	cprintf("serve_close is good\n");
	fileid = fd->fd_file.id;
	sys_page_unmap(0, (void*) FVA);

	if ((r = fsipc_map(fileid, 0, UTEMP)) != -E_INVAL)
		panic("serve_map does not handle stale fileids correctly");
	cprintf("stale fileid is good\n");
}
Exemplo n.º 2
0
Arquivo: file.c Projeto: ren85/jos2006
// Clean up a file-server file descriptor.
// This function is called by fd_close.
static int
file_close(struct Fd *fd)
{
	// Unmap any data mapped for the file,
	// then tell the file server that we have closed the file
	// (to free up its resources).

	// LAB 5: Your code here.
	void *va;
	void *start;
	void *end;
	int r;

	start=(void *)fd2data(fd);
	end=(void *)(start + fd->fd_file.file.f_size);
	for (va=(void *)fd2data(fd); va <= end; va+=PGSIZE)
		if (va_is_dirty2(va))
			if ((r = fsipc_dirty(fd->fd_file.id, (off_t) (va - start))) < 0)
				return r;
	if ((r = fsipc_close(fd->fd_file.id)) < 0)
		return r;
	
	funmap(fd, fd->fd_file.file.f_size, 0, 0);
	return 0;
}
Exemplo n.º 3
0
// Clean up a file-server file descriptor.
// This function is called by fd_close.
static int
file_close(struct Fd *fd)
{
	// Unmap any data mapped for the file,
	// then tell the file server that we have closed the file
	// (to free up its resources).

	// LAB 5: Your code here.
	int r;
	if ((r = funmap(fd, fd->fd_file.file.f_size, 0, 1)) < 0)
		return r;
	if (debug)
		cprintf("close %s\n", fd->fd_file.file.f_name); 
	return fsipc_close(fd->fd_file.id);
}