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      1 /*	$NetBSD: open_pack.c,v 1.1.1.3 2019/12/22 12:34:07 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;
     24 	void *buf;
     25 	int oldsize, bufsize, packsize;
     26 	int err;
     27 	const char *inname;
     28 	char outname[PATH_MAX];
     29 
     30 	test_init(argc, argv);
     31 	fdt = load_blob_arg(argc, argv);
     32 	inname = argv[1];
     33 
     34 	oldsize = fdt_totalsize(fdt);
     35 
     36 	bufsize = oldsize * 2;
     37 
     38 	buf = xmalloc(bufsize);
     39 	/* don't leak uninitialized memory into our output */
     40 	memset(buf, 0, bufsize);
     41 
     42 	fdt1 = buf;
     43 	err = fdt_open_into(fdt, fdt1, bufsize);
     44 	if (err)
     45 		FAIL("fdt_open_into(): %s", fdt_strerror(err));
     46 	sprintf(outname, "opened.%s", inname);
     47 	save_blob(outname, fdt1);
     48 
     49 	err = fdt_pack(fdt1);
     50 	if (err)
     51 		FAIL("fdt_pack(): %s", fdt_strerror(err));
     52 	sprintf(outname, "repacked.%s", inname);
     53 	save_blob(outname, fdt1);
     54 
     55 	packsize = fdt_totalsize(fdt1);
     56 
     57 	verbose_printf("oldsize = %d, bufsize = %d, packsize = %d\n",
     58 		       oldsize, bufsize, packsize);
     59 	PASS();
     60 }
     61