1 /* Test for vfork functions.
2 Copyright (C) 2007-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
28 static int do_test (void);
29 static void do_prepare (void);
32 #define TEST_FUNCTION do_test ()
33 #define PREPARE(argc, argv) do_prepare ()
34 #include "../test-skeleton.c"
37 run_script (const char *script, char *const argv[])
39 for (size_t i = 0; i < 5; i++)
43 FAIL_EXIT1 ("vfork failed: %m");
46 execvp (script, argv);
51 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
52 FAIL_EXIT1 ("waitpid failed");
55 if (WIFEXITED (status))
56 FAIL_EXIT1 ("%s failed with status %d\n", script,
57 WEXITSTATUS (status));
59 FAIL_EXIT1 ("%s killed by signal %d\n", script,
70 const char *path = getenv ("PATH");
73 char pathbuf[strlen (tmpdirname) + 1 + strlen (path) + 1];
74 strcpy (stpcpy (stpcpy (pathbuf, tmpdirname), ":"), path);
75 if (setenv ("PATH", pathbuf, 1) < 0)
77 puts ("setenv failed");
81 /* Although manual states first argument should be the script name itself,
82 current execv{p,e} implementation allows it. */
83 char *argv00[] = { NULL };
84 run_script ("script0.sh", argv00);
86 char *argv01[] = { (char*) "script0.sh", NULL };
87 run_script ("script0.sh", argv01);
89 char *argv1[] = { (char *) "script1.sh", (char *) "1", NULL };
90 run_script ("script1.sh", argv1);
92 char *argv2[] = { (char *) "script2.sh", (char *) "2", NULL };
93 run_script ("script2.sh", argv2);
95 /* Same as before but with execlp. */
96 for (size_t i = 0; i < 5; i++)
101 printf ("vfork failed: %m\n");
106 execlp ("script2.sh", "script2.sh", "3", NULL);
110 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
112 puts ("waitpid failed");
115 else if (status != 0)
117 printf ("script2.sh failed with status %d\n", status);
123 char *argv4[] = { (char *) "echo", (char *) "script 4", NULL };
124 run_script ("echo", argv4);
130 create_script (const char *script, const char *contents, size_t size)
132 int fd = open (script, O_WRONLY | O_CREAT, 0700);
134 || TEMP_FAILURE_RETRY (write (fd, contents, size)) != size
135 || fchmod (fd, S_IRUSR | S_IXUSR) < 0)
136 FAIL_EXIT1 ("could not write %s\n", script);
143 size_t len = strlen (test_dir) + sizeof ("/tst-vfork3.XXXXXX");
144 tmpdirname = malloc (len);
145 if (tmpdirname == NULL)
146 FAIL_EXIT1 ("out of memory");
147 strcpy (stpcpy (tmpdirname, test_dir), "/tst-vfork3.XXXXXX");
149 tmpdirname = mkdtemp (tmpdirname);
150 if (tmpdirname == NULL)
151 FAIL_EXIT1 ("could not create temporary directory");
153 char script0[len + sizeof "/script0.sh"];
154 char script1[len + sizeof "/script1.sh"];
155 char script2[len + sizeof "/script2.sh"];
157 strcpy (stpcpy (script0, tmpdirname), "/script0.sh");
158 strcpy (stpcpy (script1, tmpdirname), "/script1.sh");
159 strcpy (stpcpy (script2, tmpdirname), "/script2.sh");
161 add_temp_file (tmpdirname);
162 add_temp_file (script0);
163 add_temp_file (script1);
164 add_temp_file (script2);
166 const char content0[] = "#!/bin/sh\necho empty\n";
167 create_script (script0, content0, sizeof content0);
169 const char content1[] = "#!/bin/sh\necho script $1\n";
170 create_script (script1, content1, sizeof content1);
172 const char content2[] = "echo script $1\n";
173 create_script (script2, content2, sizeof content2);