| /* Tests for pread and pwrite. |
| Copyright (C) 1998-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <error.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| |
| /* Allow testing of the 64-bit versions as well. */ |
| #ifndef PREAD |
| # define PREAD pread |
| # define PWRITE pwrite |
| #endif |
| |
| #define STRINGIFY(s) STRINGIFY2 (s) |
| #define STRINGIFY2(s) #s |
| |
| /* Prototype for our test function. */ |
| extern void do_prepare (int argc, char *argv[]); |
| extern int do_test (int argc, char *argv[]); |
| |
| /* We have a preparation function. */ |
| #define PREPARE do_prepare |
| |
| /* We might need a bit longer timeout. */ |
| #define TIMEOUT 20 /* sec */ |
| |
| /* This defines the `main' function and some more. */ |
| #include <test-skeleton.c> |
| |
| /* These are for the temporary file we generate. */ |
| char *name; |
| int fd; |
| |
| void |
| do_prepare (int argc, char *argv[]) |
| { |
| size_t name_len; |
| |
| #define FNAME FNAME2(TRUNCATE) |
| #define FNAME2(s) "/" STRINGIFY(s) "XXXXXX" |
| |
| name_len = strlen (test_dir); |
| name = malloc (name_len + sizeof (FNAME)); |
| if (name == NULL) |
| error (EXIT_FAILURE, errno, "cannot allocate file name"); |
| mempcpy (mempcpy (name, test_dir, name_len), FNAME, sizeof (FNAME)); |
| add_temp_file (name); |
| |
| /* Open our test file. */ |
| fd = mkstemp (name); |
| if (fd == -1) |
| error (EXIT_FAILURE, errno, "cannot open test file `%s'", name); |
| } |
| |
| |
| int |
| do_test (int argc, char *argv[]) |
| { |
| char buf[1000]; |
| char res[1000]; |
| int i; |
| |
| memset (buf, '\0', sizeof (buf)); |
| memset (res, '\xff', sizeof (res)); |
| |
| if (write (fd, buf, sizeof (buf)) != sizeof (buf)) |
| error (EXIT_FAILURE, errno, "during write"); |
| |
| for (i = 100; i < 200; ++i) |
| buf[i] = i; |
| if (PWRITE (fd, buf + 100, 100, 100) != 100) |
| error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE)); |
| |
| for (i = 450; i < 600; ++i) |
| buf[i] = i; |
| if (PWRITE (fd, buf + 450, 150, 450) != 150) |
| error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PWRITE)); |
| |
| if (PREAD (fd, res, sizeof (buf) - 50, 50) != sizeof (buf) - 50) |
| error (EXIT_FAILURE, errno, "during %s", STRINGIFY (PREAD)); |
| |
| close (fd); |
| unlink (name); |
| |
| return memcmp (buf + 50, res, sizeof (buf) - 50); |
| } |