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/*
* Copyright (C) 2007 Nokia Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Author: Adrian Hunter
*/
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "tests.h"
static void test_2(void)
{
pid_t pid;
int create, full;
unsigned i, number_of_files;
unsigned growth;
unsigned size;
uint64_t big_file_size;
int fd;
off_t offset;
char dir_name[256];
/* Create a directory to test in */
pid = getpid();
tests_cat_pid(dir_name, "test_2_test_dir_", pid);
if (chdir(dir_name) == -1)
CHECK(mkdir(dir_name, 0777) != -1);
CHECK(chdir(dir_name) != -1);
/* Create up to 1000 files appending 400 bytes at a time to each file */
/* until the file system is full.*/
create = 1;
full = 0;
number_of_files = 1000;
while (!full) {
for (i = 0; i < number_of_files; ++i) {
growth = tests_append_to_fragment_file(i, 400, create);
if (!growth) {
full = 1;
if (create)
number_of_files = i;
break;
}
}
create = 0;
}
/* Check the files */
CHECK(tests_count_files_in_dir(".") == number_of_files);
for (i = 0; i < number_of_files; ++i)
tests_check_fragment_file(i);
/* Delete half of them */
for (i = 1; i < number_of_files; i += 2)
tests_delete_fragment_file(i);
/* Check them again */
CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
/* Create a big file that fills two thirds of the free space */
big_file_size = tests_get_big_file_size(2,3);
/* Check the big file */
tests_create_file("big_file", big_file_size);
CHECK(tests_count_files_in_dir(".") == 1 + (number_of_files + 1) / 2);
tests_check_filled_file("big_file");
/* Open the big file */
fd = open("big_file",O_RDWR | tests_maybe_sync_flag());
CHECK(fd != -1);
/* Delete the big file while it is still open */
tests_delete_file("big_file");
/* Check the big file again */
CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
tests_check_filled_file_fd(fd);
/* Write parts of the files and check them */
offset = 100; /* Offset to write at, in the small files */
size = 200; /* Number of bytes to write at the offset */
for (i = 0; i < number_of_files; i += 2)
tests_overwite_fragment_file(i, offset, size);
/* Rewrite the big file entirely */
tests_write_filled_file(fd, 0, big_file_size);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
tests_check_filled_file_fd(fd);
offset = 300; /* Offset to write at, in the small files */
size = 400; /* Number of bytes to write at the offset */
for (i = 0; i < number_of_files; i += 2)
tests_overwite_fragment_file(i, offset, size);
/* Rewrite the big file entirely */
tests_write_filled_file(fd, 0, big_file_size);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
tests_check_filled_file_fd(fd);
offset = 110; /* Offset to write at, in the small files */
size = 10; /* Number of bytes to write at the offset */
for (i = 0; i < number_of_files; i += 2)
tests_overwite_fragment_file(i, offset, size);
/* Rewrite the big file entirely */
tests_write_filled_file(fd, 0, big_file_size);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
tests_check_filled_file_fd(fd);
offset = 10; /* Offset to write at, in the small files */
size = 1000; /* Number of bytes to write at the offset */
for (i = 0; i < number_of_files; i += 2)
tests_overwite_fragment_file(i, offset, size);
/* Rewrite the big file entirely */
tests_write_filled_file(fd, 0, big_file_size);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
tests_check_filled_file_fd(fd);
offset = 0; /* Offset to write at, in the small files */
size = 100000; /* Number of bytes to write at the offset */
for (i = 0; i < number_of_files; i += 2)
tests_overwite_fragment_file(i, offset, size);
/* Rewrite the big file entirely */
tests_write_filled_file(fd, 0, big_file_size);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
tests_check_filled_file_fd(fd);
/* Close the big file*/
CHECK(close(fd) != -1);
/* Check the small files */
CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
for (i = 0; i < number_of_files; i += 2)
tests_check_fragment_file(i);
/* Delete the small files */
for (i = 0; i < number_of_files; i += 2)
tests_delete_fragment_file(i);
CHECK(tests_count_files_in_dir(".") == 0);
CHECK(chdir("..") != -1);
CHECK(rmdir(dir_name) != -1);
}
/* Title of this test */
static const char *test_2_get_title(void)
{
return "Repeated write many small files and one big deleted file";
}
/* Description of this test */
static const char *test_2_get_description(void)
{
return
"Create a directory named test_2_test_dir_pid, where " \
"pid is the process id. Within that directory, " \
"create about 1000 files. Append 400 bytes to each until " \
"the file system is full. Then delete half of them. Then " \
"create a big file that uses about 2/3 of the remaining free " \
"space. Get a file descriptor for the big file, and delete " \
"the big file. Then repeatedly write to the small files " \
"and the big file. " \
"Finally delete the big file and directory.";
}
int main(int argc, char *argv[])
{
int run_test;
/* Handle common arguments */
run_test = tests_get_args(argc, argv, test_2_get_title(),
test_2_get_description(), "s");
if (!run_test)
return 1;
/* Change directory to the file system and check it is ok for testing */
tests_check_test_file_system();
/* Do the actual test */
test_2();
return 0;
}
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