// SPDX-License-Identifier: GPL-2.0#include <linux/init.h>#include <linux/fs.h>#include <linux/file.h>#include <linux/mm_types.h>#include <linux/binfmts.h>#include <linux/a.out.h> static int load_binary(struct linux_binprm *bprm){	struct exec *eh = (struct exec *)bprm->buf;	unsigned long loader;	struct file *file;	int retval; 	if (eh->fh.f_magic != 0x183 || (eh->fh.f_flags & 0x3000) != 0x3000)		return -ENOEXEC; 	if (bprm->loader)		return -ENOEXEC; 	loader = bprm->vma->vm_end - sizeof(void *); 	file = open_exec("/sbin/loader");	retval = PTR_ERR(file);	if (IS_ERR(file))		return retval; 	/* Remember if the application is TASO.  */	bprm->taso = eh->ah.entry < 0x100000000UL; 	bprm->interpreter = file;	bprm->loader = loader;	return 0;} static struct linux_binfmt loader_format = {	.load_binary	= load_binary,}; static int __init init_loader_binfmt(void){	insert_binfmt(&loader_format);	return 0;}arch_initcall(init_loader_binfmt);