xref: /freebsd/lib/libc/tests/gen/posix_spawn_test.c (revision 3c4ba5f55438f7afd4f4b0b56f88f2bb505fd6a6)
1 /*-
2  * Copyright (c) 2011 Jilles Tjoelker
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * Test program for posix_spawn() and posix_spawnp() as specified by
29  * IEEE Std. 1003.1-2008.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include <sys/wait.h>
36 #include <errno.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <spawn.h>
41 
42 #include <atf-c.h>
43 
44 char *myenv[2] = { "answer=42", NULL };
45 
46 ATF_TC_WITHOUT_HEAD(posix_spawn_simple_test);
47 ATF_TC_BODY(posix_spawn_simple_test, tc)
48 {
49 	char *myargs[4];
50 	int error, status;
51 	pid_t pid, waitres;
52 
53 	/* Make sure we have no child processes. */
54 	while (waitpid(-1, NULL, 0) != -1)
55 		;
56 	ATF_REQUIRE_MSG(errno == ECHILD, "errno was not ECHILD: %d", errno);
57 
58 	/* Simple test. */
59 	myargs[0] = "sh";
60 	myargs[1] = "-c";
61 	myargs[2] = "exit $answer";
62 	myargs[3] = NULL;
63 	error = posix_spawnp(&pid, myargs[0], NULL, NULL, myargs, myenv);
64 	ATF_REQUIRE(error == 0);
65 	waitres = waitpid(pid, &status, 0);
66 	ATF_REQUIRE(waitres == pid);
67 	ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == 42);
68 }
69 
70 ATF_TC_WITHOUT_HEAD(posix_spawn_no_such_command_negative_test);
71 ATF_TC_BODY(posix_spawn_no_such_command_negative_test, tc)
72 {
73 	char *myargs[4];
74 	int error, status;
75 	pid_t pid, waitres;
76 
77 	/*
78 	 * If the executable does not exist, the function shall either fail
79 	 * and not create a child process or succeed and create a child
80 	 * process that exits with status 127.
81 	 */
82 	myargs[0] = "/var/empty/nonexistent";
83 	myargs[1] = NULL;
84 	error = posix_spawn(&pid, myargs[0], NULL, NULL, myargs, myenv);
85 	if (error == 0) {
86 		waitres = waitpid(pid, &status, 0);
87 		ATF_REQUIRE(waitres == pid);
88 		ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == 127);
89 	} else {
90 		ATF_REQUIRE(error == ENOENT);
91 		waitres = waitpid(-1, NULL, 0);
92 		ATF_REQUIRE(waitres == -1 && errno == ECHILD);
93 	}
94 }
95 
96 ATF_TC_WITHOUT_HEAD(posix_spawnp_enoexec_fallback);
97 ATF_TC_BODY(posix_spawnp_enoexec_fallback, tc)
98 {
99 	char buf[FILENAME_MAX];
100 	char *myargs[2];
101 	int error, status;
102 	pid_t pid, waitres;
103 
104 	snprintf(buf, sizeof(buf), "%s/spawnp_enoexec.sh",
105 	    atf_tc_get_config_var(tc, "srcdir"));
106 	myargs[0] = buf;
107 	myargs[1] = NULL;
108 	error = posix_spawnp(&pid, myargs[0], NULL, NULL, myargs, myenv);
109 	ATF_REQUIRE(error == 0);
110 	waitres = waitpid(pid, &status, 0);
111 	ATF_REQUIRE(waitres == pid);
112 	ATF_REQUIRE(WIFEXITED(status) && WEXITSTATUS(status) == 42);
113 }
114 
115 ATF_TC_WITHOUT_HEAD(posix_spawnp_enoexec_fallback_null_argv0);
116 ATF_TC_BODY(posix_spawnp_enoexec_fallback_null_argv0, tc)
117 {
118 	char buf[FILENAME_MAX];
119 	char *myargs[1];
120 	int error;
121 	pid_t pid;
122 
123 	snprintf(buf, sizeof(buf), "%s/spawnp_enoexec.sh",
124 	    atf_tc_get_config_var(tc, "srcdir"));
125 	myargs[0] = NULL;
126 	error = posix_spawnp(&pid, buf, NULL, NULL, myargs, myenv);
127 	ATF_REQUIRE(error == EINVAL);
128 }
129 
130 ATF_TP_ADD_TCS(tp)
131 {
132 
133 	ATF_TP_ADD_TC(tp, posix_spawn_simple_test);
134 	ATF_TP_ADD_TC(tp, posix_spawn_no_such_command_negative_test);
135 	ATF_TP_ADD_TC(tp, posix_spawnp_enoexec_fallback);
136 	ATF_TP_ADD_TC(tp, posix_spawnp_enoexec_fallback_null_argv0);
137 
138 	return (atf_no_error());
139 }
140