1 /* Tests for pread and pwrite.
2 Copyright (C) 1998-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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/>. */
26 /* Allow testing of the 64-bit versions as well. */
29 # define PWRITE pwrite
32 #define STRINGIFY(s) STRINGIFY2 (s)
33 #define STRINGIFY2(s) #s
35 /* Prototype for our test function. */
36 extern void do_prepare (int argc, char *argv[]);
37 extern int do_test (int argc, char *argv[]);
39 /* We have a preparation function. */
40 #define PREPARE do_prepare
42 /* We might need a bit longer timeout. */
43 #define TIMEOUT 20 /* sec */
45 /* This defines the `main' function and some more. */
46 #include <test-skeleton.c>
48 /* These are for the temporary file we generate. */
53 do_prepare (int argc, char *argv[])
57 #define FNAME FNAME2(TRUNCATE)
58 #define FNAME2(s) "/" STRINGIFY(s) "XXXXXX"
60 name_len = strlen (test_dir);
61 name = malloc (name_len + sizeof (FNAME));
63 error (EXIT_FAILURE, errno, "cannot allocate file name");
64 mempcpy (mempcpy (name, test_dir, name_len), FNAME, sizeof (FNAME));
67 /* Open our test file. */
70 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
75 do_test (int argc, char *argv[])
81 memset (buf, '\0', sizeof (buf));
82 memset (res, '\xff', sizeof (res));
84 if (write (fd, buf, sizeof (buf)) != sizeof (buf))
85 error (EXIT_FAILURE, errno, "during write");
87 for (i = 100; i < 200; ++i)
89 if (PWRITE (fd, buf + 100, 100, 100) != 100)
90 error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE));
92 for (i = 450; i < 600; ++i)
94 if (PWRITE (fd, buf + 450, 150, 450) != 150)
95 error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE));
97 if (PREAD (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50)
98 error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PREAD));
103 return memcmp (buf + 50, res, sizeof (buf) - 50);