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/* 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#define _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <search.h>
#include <errno.h>
#include <error.h>
#include <string.h>
#include <unistd.h>
#define TESTFILE_NAME "CRAP.XXXXXX"
#define STRINGIFY(s) STRINGIFY2 (s)
#define STRINGIFY2(s) #s
/* These are for the temporary file we generate. */
char *name;
int fd;
/* Test the 32-bit versions first. */
#define PREAD pread
#define PWRITE pwrite
int 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);
}
/* Test the 64-bit versions as well. */
#if defined __UCLIBC_HAS_LFS__
#undef PREAD
#undef PWRITE
#define PREAD pread64
#define PWRITE pwrite64
int test64(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);
}
#endif
void prepare(void)
{
if (!name) {
name = malloc (BUFSIZ);
if (name == NULL)
error (EXIT_FAILURE, errno, "cannot allocate file name");
}
strncpy(name, TESTFILE_NAME, BUFSIZ);
/* Open our test file. */
fd = mkstemp (name);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
}
int main (int argc, char **argv)
{
int result = 0;
prepare();
result+=test(argc, argv);
if (result) {
fprintf(stderr, "pread/pwrite test failed.\n");
return(EXIT_FAILURE);
}
fprintf(stderr, "pread/pwrite test successful.\n");
#if defined __UCLIBC_HAS_LFS__
prepare();
result+=test64(argc, argv);
if (result) {
fprintf(stderr, "pread64/pwrite64 test failed.\n");
return(EXIT_FAILURE);
}
fprintf(stderr, "pread64/pwrite64 test successful.\n");
#endif
return(EXIT_SUCCESS);
}
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