Exemplo n.º 1
0
Arquivo: file.c Projeto: Lyude/linux
static ssize_t ovl_read_iter(struct kiocb *iocb, struct iov_iter *iter)
{
	struct file *file = iocb->ki_filp;
	struct fd real;
	const struct cred *old_cred;
	ssize_t ret;

	if (!iov_iter_count(iter))
		return 0;

	ret = ovl_real_fdget(file, &real);
	if (ret)
		return ret;

	old_cred = ovl_override_creds(file_inode(file)->i_sb);
	ret = vfs_iter_read(real.file, iter, &iocb->ki_pos,
			    ovl_iocb_to_rwf(iocb));
	revert_creds(old_cred);

	ovl_file_accessed(file);

	fdput(real);

	return ret;
}
Exemplo n.º 2
0
static ssize_t
coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
	struct file *coda_file = iocb->ki_filp;
	struct coda_file_info *cfi = CODA_FTOC(coda_file);

	BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);

	return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos);
}