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      1 /*	$NetBSD: move_and_save.c,v 1.4 2019/12/22 12:38:24 skrll Exp $	*/
      2 
      3 // SPDX-License-Identifier: LGPL-2.1-or-later
      4 /*
      5  * libfdt - Flat Device Tree manipulation
      6  *	Basic testcase for read-only access
      7  * Copyright (C) 2006 David Gibson, IBM Corporation.
      8  */
      9 
     10 #include <stdlib.h>
     11 #include <stdio.h>
     12 #include <string.h>
     13 #include <limits.h>
     14 #include <stdint.h>
     15 
     16 #include <libfdt.h>
     17 
     18 #include "tests.h"
     19 #include "testdata.h"
     20 
     21 int main(int argc, char *argv[])
     22 {
     23 	void *fdt, *fdt1, *fdt2, *fdt3;
     24 	char *buf;
     25 	int shuntsize;
     26 	int bufsize;
     27 	int err;
     28 	const char *inname;
     29 	char outname[PATH_MAX];
     30 
     31 	test_init(argc, argv);
     32 	fdt = load_blob_arg(argc, argv);
     33 	inname = argv[1];
     34 
     35 	shuntsize = FDTALIGN2(fdt_totalsize(fdt) / 2, sizeof(uint64_t));
     36 	bufsize = fdt_totalsize(fdt) + shuntsize;
     37 	buf = xmalloc(bufsize);
     38 
     39 	fdt1 = buf;
     40 	err = fdt_move(fdt, fdt1, bufsize);
     41 	if (err)
     42 		FAIL("Failed to move tree into new buffer: %s",
     43 		     fdt_strerror(err));
     44 	sprintf(outname, "moved.%s", inname);
     45 	save_blob(outname, fdt1);
     46 
     47 	fdt2 = buf + shuntsize;
     48 	err = fdt_move(fdt1, fdt2, bufsize-shuntsize);
     49 	if (err)
     50 		FAIL("Failed to shunt tree %d bytes: %s",
     51 		     shuntsize, fdt_strerror(err));
     52 	sprintf(outname, "shunted.%s", inname);
     53 	save_blob(outname, fdt2);
     54 
     55 	fdt3 = buf;
     56 	err = fdt_move(fdt2, fdt3, bufsize);
     57 	if (err)
     58 		FAIL("Failed to deshunt tree %d bytes: %s",
     59 		     shuntsize, fdt_strerror(err));
     60 	sprintf(outname, "deshunted.%s", inname);
     61 	save_blob(outname, fdt3);
     62 
     63 	PASS();
     64 }
     65