// SPDX-License-Identifier: GPL-2.0/* * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) */#include <linux/memblock.h>#include <os.h> #include "um_arch.h" static int __init __uml_load_file(const char *filename, void *buf, int size){	int fd, n; 	fd = os_open_file(filename, of_read(OPENFLAGS()), 0);	if (fd < 0) {		printk(KERN_ERR "Opening '%s' failed - err = %d\n", filename,		       -fd);		return -1;	}	n = os_read_file(fd, buf, size);	if (n != size) {		printk(KERN_ERR "Read of %d bytes from '%s' failed, "		       "err = %d\n", size,		       filename, -n);		return -1;	} 	os_close_file(fd);	return 0;} void *uml_load_file(const char *filename, unsigned long long *size){	void *area;	int err; 	*size = 0; 	if (!filename)		return NULL; 	err = os_file_size(filename, size);	if (err)		return NULL; 	if (*size == 0) {		printk(KERN_ERR "\"%s\" is empty\n", filename);		return NULL;	} 	area = memblock_alloc_or_panic(*size, SMP_CACHE_BYTES); 	if (__uml_load_file(filename, area, *size)) {		memblock_free(area, *size);		return NULL;	} 	return area;}