/* Tests for pread and pwrite. Copyright (C) 1998, 2000 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[]) { char 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); }