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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/*
* libsystem
*
* Copyright (c) 2016 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <time.h>
#include "libsystem/libsystem.h"
#define TEST_SRC_FILE "/tmp/test-cp-src"
#define TEST_DST_FILE "/tmp/test-cp-dst"
static int random_char(char **buf, size_t len) {
static int rand_init = 0;
char *b;
int rnd;
size_t s;
if (!rand_init) {
srand(time(NULL));
rand_init = 1;
}
b = new0(char, len);
if (!b)
return -ENOMEM;
for (s = 0; s < len; s++) {
/* 98 = number_of_chars((sp) ~ (DEL) + \t + \n + \r) */
rnd = rand() % 98;
assert(rnd < 98);
switch (rnd) {
case 95:
b[s] = '\t';
break;
case 96:
b[s] = '\n';
break;
case 97:
b[s] = '\r';
break;
default:
b[s] = ' ' + rnd;
break;
}
}
*buf = b;
return 0;
}
static int write_src_file(unsigned int n_byte) {
_cleanup_free_ char *buf = NULL;
_cleanup_close_ int fd = -1;
assert(random_char(&buf, n_byte) == 0);
fd = open(TEST_SRC_FILE, O_CREAT | O_WRONLY | O_TRUNC, 0644);
assert(fd >= 0);
assert(write(fd, buf, n_byte) == n_byte);
return 0;
}
static void compare_file(void) {
_cleanup_close_ int src_fd = -1, dst_fd = -1;
char src_buf[1024], dst_buf[1024];
ssize_t src_red, dst_red;
src_fd = open(TEST_SRC_FILE, O_RDONLY);
assert(src_fd >= 0);
dst_fd = open(TEST_DST_FILE, O_RDONLY);
assert(dst_fd >= 0);
while(src_red = read(src_fd, src_buf, 1024) > 0,
dst_red = read(dst_fd, dst_buf, 1024) > 0) {
assert(src_red == dst_red);
assert(memcmp(src_buf, dst_buf, src_red) == 0);
}
}
static void test_overwite(void) {
assert(unlink(TEST_SRC_FILE) == 0 || errno == ENOENT);
assert(unlink(TEST_DST_FILE) == 0 || errno == ENOENT);
assert(touch(TEST_SRC_FILE) == 0);
assert(touch(TEST_DST_FILE) == 0);
assert(do_copy(TEST_SRC_FILE, TEST_DST_FILE) == -EALREADY);
assert(do_copy_force(TEST_SRC_FILE, TEST_DST_FILE) == 0);
compare_file();
}
static void test_n_byte_cp_force(unsigned int n) {
assert(write_src_file(n) == 0);
assert(do_copy_force(TEST_SRC_FILE, TEST_DST_FILE) == 0);
compare_file();
}
int main(int argc, char *argv[]) {
unsigned int b;
test_overwite();
for (b = 8; b < (1 << 30); b = b << 1)
test_n_byte_cp_force(b);
unlink(TEST_SRC_FILE);
unlink(TEST_DST_FILE);
return 0;
}
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