void change(const char* path, int size)
{
struct stat st;
if (!size)
return;
if (lstat(path, &st) != 0) {
if (errno == ENOENT)
return; /* it may be already deleted */
/* LCOV_EXCL_START */
fprintf(stderr, "Error accessing %s\n", path);
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
if (S_ISLNK(st.st_mode)) {
/* symlink */
if (rnd(2) == 0) {
/* delete */
if (remove(path) != 0) {
/* LCOV_EXCL_START */
fprintf(stderr, "Error removing %s\n", path);
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
} else {
/* recreate */
char linkto[PATH_MAX];
if (remove(path) != 0) {
/* LCOV_EXCL_START */
fprintf(stderr, "Error removing %s\n", path);
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
rnd_name(linkto);
create_symlink(path, linkto);
}
} else if (S_ISREG(st.st_mode)) {
int r;
r = rnd(4);
if (r == 0) {
/* write */
writ(path, size, 0);
} else if (r == 1) {
/* append */
append(path, size);
} else if (r == 2) {
/* truncate */
truncat(path, size);
} else {
/* delete */
if (remove(path) != 0) {
/* LCOV_EXCL_START */
fprintf(stderr, "Error removing %s\n", path);
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
}
}
}
int main(int argc, char* argv[])
{
int i, j, b;
if (argc < 2) {
help();
exit(EXIT_SUCCESS);
}
if (strcmp(argv[1], "generate") == 0) {
int disk, file, size;
if (argc != 6) {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
seed = atoi(argv[2]);
disk = atoi(argv[3]);
file = atoi(argv[4]);
size = atoi(argv[5]);
for(i=0;i<disk;++i) {
for(j=0;j<file;++j) {
if (j == 0)
generate(i+1, size);
else if (j == 1)
generate(i+1, 0);
else
generate(i+1, rnd(size));
}
}
} else if (strcmp(argv[1], "damage") == 0 || strcmp(argv[1], "write") == 0) {
int fail, size;
int silent_error = strcmp(argv[1], "damage") == 0;
if (argc < 6) {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
seed = atoi(argv[2]);
fail = atoi(argv[3]);
size = atoi(argv[4]);
b = 5;
/* sort the file names */
qsort(&argv[b], argc - b, sizeof(argv[b]), qsort_strcmp);
for(i=b;i<argc;++i) {
for(j=0;j<fail;++j) {
writ(argv[i], rndnotzero(size), silent_error);
}
}
} else if (strcmp(argv[1], "append") == 0) {
int size;
if (argc < 5) {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
seed = atoi(argv[2]);
size = atoi(argv[3]);
b = 4;
/* sort the file names */
qsort(&argv[b], argc - b, sizeof(argv[b]), qsort_strcmp);
for(i=b;i<argc;++i) {
append(argv[i], rndnotzero(size));
}
} else if (strcmp(argv[1], "truncate") == 0) {
int size;
if (argc < 5) {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
seed = atoi(argv[2]);
size = atoi(argv[3]);
b = 4;
/* sort the file names */
qsort(&argv[b], argc - b, sizeof(argv[b]), qsort_strcmp);
for(i=b;i<argc;++i) {
truncat(argv[i], rnd(size));
}
} else if (strcmp(argv[1], "change") == 0) {
int size;
if (argc < 5) {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
seed = atoi(argv[2]);
size = atoi(argv[3]);
b = 4;
/* sort the file names */
qsort(&argv[b], argc - b, sizeof(argv[b]), qsort_strcmp);
for(i=b;i<argc;++i) {
change(argv[i], rnd(size));
}
} else {
/* LCOV_EXCL_START */
help();
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
return 0;
}
void isDiff(char origFile[], char otherFile[],char disp[])
{
unsigned long int offset = BUFFER_SIZE;
fpos_t origPos;
fpos_t otherPos;
FILE * origReader;
FILE * otherReader;
unsigned char * origChar = NULL;
unsigned char * otherChar = NULL;
unsigned char * temp = calloc(BUFFER_SIZE,sizeof(unsigned char));
unsigned char * temp1 = calloc(BUFFER_SIZE,sizeof(unsigned char));
if(!temp || !temp1)
{
puts("Memory error!");
abort();
}
origChar = temp;
otherChar = temp1;
memset(origChar,'\0',BUFFER_SIZE);
memset(otherChar,'\0',BUFFER_SIZE);
mpz_t counter;
mpz_t difference;
mpz_t origSize;
mpz_t otherSize;
mpz_init(counter);
mpz_init(difference);
mpz_init(origSize);
mpz_init(otherSize);
mpz_set_ui(counter,0);
mpz_set_ui(origSize,0);
mpz_set_ui(otherSize,0);
do
{
getFileSize(origFile,&origSize);
getFileSize(otherFile,&otherSize);
mpz_sub(difference,origSize,otherSize);
printf("*****");
printf("%s has ",origFile);
mpz_out_str(stdout,10,origSize);
printf(" bytes while %s has ", otherFile);
mpz_out_str(stdout,10,otherSize);
printf(" bytes.");
printf("*****\n");
if(mpz_cmp(otherSize,origSize) > 0)
{
puts("=====Truncating File: =====");
truncat(otherFile,origSize);
getFileSize(origFile,&origSize);
getFileSize(origFile,&otherSize);
printf("*****");
printf("%s has ",origFile);
mpz_out_str(stdout,10,origSize);
printf(" bytes while %s has ", otherFile);
mpz_out_str(stdout,10,otherSize);
printf(" bytes.");
printf("*****\n");
}
else if(mpz_cmp(otherSize,origSize) < 0)
{
fill(otherFile,origSize,otherSize);
}
}while(mpz_cmp(otherSize,origSize));
origReader = fopen(origFile,"r+b");
otherReader = fopen(otherFile,"r+b");
if( otherReader == NULL || origReader == NULL)
{
puts("Error opening file!");
perror("Error:");
return;
}
else
{
puts("=====Scanning for and merging differences=====");
while(mpz_cmp(counter,origSize) < 0)
{
mpz_sub(difference,origSize,counter);
if(fgetpos(otherReader,&otherPos))
{
perror("Error getting file position: ");
}
if(fgetpos(origReader,&origPos))
{
perror("Error getting file position: ");
}
if(mpz_cmp_ui(difference,BUFFER_SIZE) <= 0)
{
offset = mpz_get_ui(difference);
mpz_out_str(stdout,10,difference);
printf("\n");
mpz_out_str(stdout,10,counter);
printf("\n");
}
// printf("Read %s %ld\n",origFile,ftell(origReader));
if(fread(origChar,sizeof(unsigned char),offset,origReader) != offset)
{
perror("Error reading! ");
}
// printf("Read %s %ld\n",otherFile,ftell(otherReader));
if(fread(otherChar,sizeof(unsigned char),offset,otherReader) != offset)
{
perror("Error reading! ");
}
if(memcmp(origChar,otherChar,offset))
{
// puts("Difference found.");
//dumpArrs(origChar, otherChar);
if(fsetpos(otherReader,&otherPos))
{
perror("Error setting file position: ");
}
if(fsetpos(origReader,&origPos))
{
perror("Error setting file position: ");
}
// printf("Writing to :%ld\n", ftell(otherReader));
if((fread(origChar,sizeof(unsigned char),offset,origReader))!= offset)
{
perror("Error writing differences");
}
keepWritingUntilEqual(&origReader, &otherReader,origChar,otherChar,&origPos,&otherPos,offset);
}
// puts("=======");
// puts("=======");
memset(origChar,'\0',BUFFER_SIZE);
memset(otherChar,'\0',BUFFER_SIZE);
// printf("%u\t%u\n",origChar,otherChar);
mpz_add_ui(counter,counter,offset);
mySleep(0);
}
mpz_out_str(stdout,10,counter);
printf(" / ");
mpz_out_str(stdout,10,origSize);
puts("");
printf("Offset :%lu\n",offset);
puts("Done!");
fclose(origReader);
fclose(otherReader);
}
mpz_clear(counter);
mpz_clear(origSize);
mpz_clear(otherSize);
mpz_clear(difference);
free(origChar);
free(otherChar);
}
