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      1 /*	$NetBSD: fa_spawn_utils.c,v 1.2 2025/03/16 15:35:36 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles Zhang <charles (at) NetBSD.org> and
      9  * Martin Husemann <martin (at) NetBSD.org>.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __RCSID("$NetBSD: fa_spawn_utils.c,v 1.2 2025/03/16 15:35:36 riastradh Exp $");
     35 
     36 #include <sys/stat.h>
     37 
     38 #include <atf-c.h>
     39 #include <errno.h>
     40 #include <stdio.h>
     41 #include <string.h>
     42 
     43 #include "fa_spawn_utils.h"
     44 #include "h_macros.h"
     45 
     46 off_t
     47 filesize(const char *fname)
     48 {
     49 	struct stat st;
     50 
     51 	RL(stat(fname, &st));
     52 	return st.st_size;
     53 }
     54 
     55 void
     56 empty_outfile(const char *fname)
     57 {
     58 	FILE *f;
     59 
     60 	REQUIRE_LIBC(f = fopen(fname, "w"), NULL);
     61 	REQUIRE_LIBC(fclose(f), EOF);
     62 }
     63