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/* Some basic tests for LFS.
Copyright (C) 2000-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <error.h>
#include <errno.h>
#include <sys/resource.h>
#include <support/check.h>
/* 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
/* This defines the `main' function and some more. */
#include <test-skeleton.c>
/* These are for the temporary file we generate. */
char *name;
int fd;
/* 2^31 = 2GB. */
#define TWO_GB 2147483648LL
void
do_prepare (int argc, char *argv[])
{
size_t name_len;
struct rlimit64 rlim;
name_len = strlen (test_dir);
name = xmalloc (name_len + sizeof ("/lfsXXXXXX"));
mempcpy (mempcpy (name, test_dir, name_len),
"/lfsXXXXXX", sizeof ("/lfsXXXXXX"));
/* Open our test file. */
fd = mkstemp64 (name);
if (fd == -1)
{
if (errno == ENOSYS)
{
/* Fail silently. */
error (0, 0, "open64 is not supported");
exit (EXIT_SUCCESS);
}
else
error (EXIT_FAILURE, errno, "cannot create temporary file");
}
if (!support_descriptor_supports_holes (fd))
FAIL_UNSUPPORTED ("File %s does not support holes", name);
add_temp_file (name);
if (getrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
{
error (0, errno, "cannot get resource limit");
exit (0);
}
if (rlim.rlim_cur < TWO_GB + 200)
{
rlim.rlim_cur = TWO_GB + 200;
if (setrlimit64 (RLIMIT_FSIZE, &rlim) != 0)
{
error (0, errno, "cannot reset file size limits");
exit (0);
}
}
}
static void
test_ftello (void)
{
FILE *f;
int ret;
off64_t pos;
f = fopen64 (name, "w");
ret = fseeko64 (f, TWO_GB+100, SEEK_SET);
if (ret == -1 && errno == ENOSYS)
{
error (0, 0, "fseeko64 is not supported.");
exit (EXIT_SUCCESS);
}
if (ret == -1 && errno == EINVAL)
{
error (0, 0, "LFS seems not to be supported");
exit (EXIT_SUCCESS);
}
if (ret == -1)
{
error (0, errno, "fseeko64 failed with error");
exit (EXIT_FAILURE);
}
ret = fwrite ("Hello", 1, 5, f);
if (ret == -1 && errno == EFBIG)
{
error (0, errno, "LFS seems not to be supported");
exit (EXIT_SUCCESS);
}
if (ret == -1 && errno == ENOSPC)
{
error (0, 0, "Not enough space to write file.");
exit (EXIT_SUCCESS);
}
if (ret != 5)
error (EXIT_FAILURE, errno, "Cannot write test string to large file");
pos = ftello64 (f);
if (pos != TWO_GB+105)
{
error (0, 0, "ftello64 gives wrong result.");
exit (EXIT_FAILURE);
}
fclose (f);
}
int
do_test (int argc, char *argv[])
{
int ret, fd2;
struct stat64 statbuf;
ret = lseek64 (fd, TWO_GB+100, SEEK_SET);
if (ret == -1 && errno == ENOSYS)
{
error (0, 0, "lseek64 is not supported.");
exit (EXIT_SUCCESS);
}
if (ret == -1 && errno == EINVAL)
{
error (0, 0, "LFS seems not to be supported.");
exit (EXIT_SUCCESS);
}
if (ret == -1)
{
error (0, errno, "lseek64 failed with error");
exit (EXIT_FAILURE);
}
off64_t offset64 = lseek64 (fd, 0, SEEK_CUR);
if (offset64 != TWO_GB + 100)
{
error (0, 0, "lseek64 did not return expected offset");
exit (EXIT_FAILURE);
}
off_t offset = lseek (fd, 0, SEEK_CUR);
if (sizeof (off_t) < sizeof (off64_t))
{
if (offset != -1 || errno != EOVERFLOW)
{
error (0, 0, "lseek did not fail with EOVERFLOW");
exit (EXIT_FAILURE);
}
}
else
if (offset != TWO_GB + 100)
{
error (0, 0, "lseek did not return expected offset");
exit (EXIT_FAILURE);
}
ret = write (fd, "Hello", 5);
if (ret == -1 && errno == EFBIG)
{
error (0, 0, "LFS seems not to be supported.");
exit (EXIT_SUCCESS);
}
if (ret == -1 && errno == ENOSPC)
{
error (0, 0, "Not enough space to write file.");
exit (EXIT_SUCCESS);
}
if (ret != 5)
error (EXIT_FAILURE, errno, "cannot write test string to large file");
ret = close (fd);
if (ret == -1)
error (EXIT_FAILURE, errno, "error closing file");
ret = stat64 (name, &statbuf);
if (ret == -1 && (errno == ENOSYS || errno == EOVERFLOW))
error (0, 0, "stat64 is not supported.");
else if (ret == -1)
error (EXIT_FAILURE, errno, "cannot stat file `%s'", name);
else if (statbuf.st_size != (TWO_GB + 100 + 5))
error (EXIT_FAILURE, 0, "stat reported size %lld instead of %lld.",
(long long int) statbuf.st_size, (TWO_GB + 100 + 5));
fd2 = openat64 (AT_FDCWD, name, O_RDWR);
if (fd2 == -1)
{
if (errno == ENOSYS)
{
/* Silently ignore this test. */
error (0, 0, "openat64 is not supported");
}
else
error (EXIT_FAILURE, errno, "openat64 failed to open big file");
}
else
{
ret = close (fd2);
if (ret == -1)
error (EXIT_FAILURE, errno, "error closing file");
}
test_ftello ();
return 0;
}
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