2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
29 /* Nonzero if the program gets called via `exec'. */
33 #define CMDLINE_OPTIONS \
34 { "restart", no_argument, &restart, 1 },
36 /* Prototype for our test function. */
37 extern void do_prepare (int argc, char *argv[]);
38 extern int do_test (int argc, char *argv[]);
40 /* We have a preparation function. */
41 #define PREPARE do_prepare
43 #include "../test-skeleton.c"
46 /* Name of the temporary files. */
50 /* The contents of our files. */
51 static const char fd1string[] = "This file should get closed";
52 static const char fd2string[] = "This file should stay opened";
55 /* We have a preparation function. */
57 do_prepare (int argc, char *argv[])
61 name_len = strlen (test_dir);
62 name1 = malloc (name_len + sizeof ("/execXXXXXX"));
63 mempcpy (mempcpy (name1, test_dir, name_len),
64 "/execXXXXXX", sizeof ("/execXXXXXX"));
65 add_temp_file (name1);
67 name2 = malloc (name_len + sizeof ("/execXXXXXX"));
68 mempcpy (mempcpy (name2, test_dir, name_len),
69 "/execXXXXXX", sizeof ("/execXXXXXX"));
70 add_temp_file (name2);
75 handle_restart (const char *fd1s, const char *fd2s, const char *name)
81 /* First get the descriptors. */
87 error (EXIT_FAILURE, 0, "value of fd1 and fd2 is the same");
89 /* First the easy part: read from the file descriptor which is
90 supposed to be open. */
91 if (lseek (fd2, 0, SEEK_CUR) != strlen (fd2string))
92 error (EXIT_FAILURE, errno, "file 2 not in right position");
93 if (lseek (fd2, 0, SEEK_SET) != 0)
94 error (EXIT_FAILURE, 0, "cannot reset position in file 2");
95 if (read (fd2, buf, sizeof buf) != strlen (fd2string))
96 error (EXIT_FAILURE, 0, "cannot read file 2");
97 if (memcmp (fd2string, buf, strlen (fd2string)) != 0)
98 error (EXIT_FAILURE, 0, "file 2 does not match");
100 /* No try to read the first file. First make sure it is not opened. */
101 if (lseek (fd1, 0, SEEK_CUR) != (off_t) -1 || errno != EBADF)
102 error (EXIT_FAILURE, 0, "file 1 (%d) is not closed", fd1);
104 /* Now open the file and read it. */
105 fd1 = open (name, O_RDONLY);
107 error (EXIT_FAILURE, errno,
108 "cannot open first file \"%s\" for verification", name);
110 if (read (fd1, buf, sizeof buf) != strlen (fd1string))
111 error (EXIT_FAILURE, errno, "cannot read file 1");
112 if (memcmp (fd1string, buf, strlen (fd1string)) != 0)
113 error (EXIT_FAILURE, 0, "file 1 does not match");
120 do_test (int argc, char *argv[])
129 - one or four parameters left if called initially
130 + path for ld.so optional
131 + "--library-path" optional
132 + the library path optional
133 + the application name
134 - three parameters left if called through re-execution
135 + file descriptor number which is supposed to be closed
136 + the open file descriptor
137 + the name of the closed desriptor
143 error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc);
145 return handle_restart (argv[1], argv[2], argv[3]);
148 if (argc != 2 && argc != 5)
149 error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc);
151 /* Prepare the test. We are creating two files: one which file descriptor
152 will be marked with FD_CLOEXEC, another which is not. */
154 /* Open our test files. */
155 fd1 = mkstemp (name1);
157 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name1);
158 fd2 = mkstemp (name2);
160 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name2);
163 flags = fcntl (fd1, F_GETFD, 0);
165 error (EXIT_FAILURE, errno, "cannot get flags");
167 if (fcntl (fd1, F_SETFD, flags) < 0)
168 error (EXIT_FAILURE, errno, "cannot set flags");
170 /* Write something in the files. */
171 if (write (fd1, fd1string, strlen (fd1string)) != strlen (fd1string))
172 error (EXIT_FAILURE, errno, "cannot write to first file");
173 if (write (fd2, fd2string, strlen (fd2string)) != strlen (fd2string))
174 error (EXIT_FAILURE, errno, "cannot write to second file");
176 /* We want to test the `exec' function. To do this we restart the program
177 with an additional parameter. But first create another process. */
184 snprintf (fd1name, sizeof fd1name, "%d", fd1);
185 snprintf (fd2name, sizeof fd2name, "%d", fd2);
187 /* This is the child. Construct the command line. */
189 execl (argv[1], argv[1], argv[2], argv[3], argv[4], "--direct",
190 "--restart", fd1name, fd2name, name1, NULL);
192 execl (argv[1], argv[1], "--direct",
193 "--restart", fd1name, fd2name, name1, NULL);
195 error (EXIT_FAILURE, errno, "cannot exec");
197 else if (pid == (pid_t) -1)
198 error (EXIT_FAILURE, errno, "cannot fork");
200 /* Wait for the child. */
201 if (waitpid (pid, &status, 0) != pid)
202 error (EXIT_FAILURE, errno, "wrong child");
204 if (WTERMSIG (status) != 0)
205 error (EXIT_FAILURE, 0, "Child terminated incorrectly");
206 status = WEXITSTATUS (status);
208 /* Remove the test files. */