1/* $NetBSD: h_fileactions.c,v 1.1 2012/02/13 21:03:08 martin 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@NetBSD.org> and
9 * Martin Husemann <martin@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 <stdio.h>
34#include <stdlib.h>
35#include <string.h>
36#include <unistd.h>
37#include <errno.h>
38#include <sys/stat.h>
39
40#define BUFSIZE	16
41
42/*
43 * This checks (hardcoded) the assumptions that are setup from the
44 * main test program via posix spawn file actions.
45 * Program exits with EXIT_SUCCESS or EXIT_FAILURE accordingly
46 * (and does some stderr diagnostics in case of errors).
47 */
48int
49main(int argc, char **argv)
50{
51	int res = EXIT_SUCCESS;
52	long lowfd;
53	char buf[BUFSIZE];
54	struct stat sb0, sb1;
55
56	if (argc < 2) {
57		fprintf(stderr, "%s: Not enough arguments: %d\n", getprogname(),
58		    argc);
59		return EXIT_FAILURE;
60	}
61	lowfd = strtol(argv[1], NULL, 10);
62	if (lowfd < 3) {
63		fprintf(stderr, "%s: Invalid lowfd %d (as str: %s) \n",
64		    getprogname(), argc, argv[1]);
65		return EXIT_FAILURE;
66	}
67
68	strcpy(buf, "test...");
69	/* First fd should be closed via addclose */
70	if (read(lowfd, buf, BUFSIZE) != -1 || errno != EBADF) {
71		fprintf(stderr, "%s: first filedesc is not closed\n",
72		    getprogname());
73		res = EXIT_FAILURE;
74	}
75	/* Next file desc should be closed via closeonexec */
76	if (read(lowfd + 1, buf, BUFSIZE) != -1 || errno != EBADF) {
77		fprintf(stderr, "%s: filedesc +1 is not closed\n",
78		    getprogname());
79		res = EXIT_FAILURE;
80	}
81	/* file desc + 2 remains open */
82	if (write(lowfd + 2, buf, BUFSIZE) <= 0) {
83		fprintf(stderr, "%s: could not write to filedesc +2\n",
84		    getprogname());
85		res = EXIT_FAILURE;
86	}
87	/* file desc + 3 should be open (via addopen) */
88	if (write(lowfd + 3, buf, BUFSIZE) <= 0) {
89		fprintf(stderr, "%s: could not write to filedesc +3\n",
90		    getprogname());
91		res = EXIT_FAILURE;
92	}
93	/* file desc + 4 should refer to stdout */
94	fflush(stdout);
95	if (fstat(fileno(stdout), &sb0) != 0) {
96		fprintf(stderr, "%s: could not fstat stdout\n",
97		    getprogname());
98		res = EXIT_FAILURE;
99	}
100	if (fstat(lowfd + 4, &sb1) != 0) {
101		fprintf(stderr, "%s: could not fstat filedesc +4\n",
102		    getprogname());
103		res = EXIT_FAILURE;
104	}
105	if (write(lowfd + 4, buf, strlen(buf)) <= 0) {
106		fprintf(stderr, "%s: could not write to filedesc +4\n",
107		    getprogname());
108		res = EXIT_FAILURE;
109	}
110	if (memcmp(&sb0, &sb1, sizeof sb0) != 0) {
111		fprintf(stderr, "%s: stat results differ\n", getprogname());
112		res = EXIT_FAILURE;
113	}
114
115	return res;
116}
117
118