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glibc/io/test-lfs.c
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/* Some basic tests for LFS. | |
Copyright (C) 2000-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Andreas Jaeger <aj@suse.de>, 2000. | |
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 <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> | |
/* 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; | |
/* 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 = malloc (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"); | |
} | |
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); | |
} | |
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; | |
} |