int main(void)
{
int i, len, n;
const int num_tests = 500000;
printf("Encode test #1:\n");
len = sizeof(enc_test_1);
n = encode_4b6b(enc_test_1, result, len);
print_bytes(result, n);
printf("Encode test #2:\n");
len = sizeof(enc_test_2);
n = encode_4b6b(enc_test_2, result, len);
print_bytes(result, n);
printf("Decode test #1:\n");
len = sizeof(dec_test_1);
n = decode_4b6b(dec_test_1, result, len);
if (n >= 0) {
print_bytes(result, n);
} else {
printf("Decoding error!\n");
return 1;
}
printf("Decode test #2:\n");
len = sizeof(dec_test_2);
n = decode_4b6b(dec_test_2, result, len);
if (n >= 0) {
print_bytes(result, n);
} else {
printf("Decoding error!\n");
return 1;
}
printf("Inverse test:\n");
for (i = 0; i < num_tests; ++i) {
randomly_fill(test, 128);
n = encode_4b6b(test, tmp, 128);
len = decode_4b6b(tmp, result, n);
if (len != 128) {
printf("Decoding error!\n");
return 1;
}
if (memcmp(result, test, 128) != 0) {
printf("Decoded to wrong value!\n");
return 1;
}
}
return 0;
}
int main(int argc, char *argv[]) {
int result;
if(argc < 3) {
printf("Usage: files [mount-point] [trials]\n");
exit(EXIT_FAILURE);
}
char *root = argv[1];
int trials = strtol(argv[2], NULL, 10);
char clkpath[256];
sprintf(clkpath, "%s/clock", root);
int clkfd = open(clkpath, O_RDONLY);
if(clkfd < 0) {
perror("open");
exit(EXIT_FAILURE);
}
char testpath[256];
sprintf(testpath, "%s/files_test", root);
int fd = open(testpath, O_RDWR | O_CREAT, 0777);
if(fd < 0) {
perror("open");
exit(EXIT_FAILURE);
}
char *buf = malloc(MAX_FILE_SIZE);
char *rbuf = malloc(MAX_FILE_SIZE);
int buf_size = randomly_fill(buf);
if(lseek(fd, 0, SEEK_SET) < 0) {
perror("lseek");
exit(EXIT_FAILURE);
}
if(write(fd, buf, buf_size) < 0) {
perror("write");
exit(EXIT_FAILURE);
}
int i;
for(i = 0; i < trials; i++) {
struct stat statbuf;
if(fstat(clkfd, &statbuf) < 0) {
perror("fstat");
exit(EXIT_FAILURE);
}
if(lseek(fd, 0, SEEK_SET) < 0) {
perror("lseek");
exit(EXIT_FAILURE);
}
result = read(fd, rbuf, MAX_FILE_SIZE);
if(result < 0) {
perror("write");
exit(EXIT_FAILURE);
}
if(result != buf_size) {
fprintf(stderr, "File size does not match! (%d != %d)\n",
buf_size, result);
exit(EXIT_FAILURE);
}
if(memcmp(buf, rbuf, buf_size) != 0) {
fprintf(stderr, "File contents do not match!\n");
exit(EXIT_FAILURE);
}
buf_size = randomly_fill(buf);
if(lseek(fd, 0, SEEK_SET) < 0) {
perror("lseek");
exit(EXIT_FAILURE);
}
if(write(fd, buf, buf_size) < 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
exit(EXIT_SUCCESS);
}