int do_open(char * filename, int flags, int mode) {
iNode * posible_file = search_directory(filename, current);
int fd;
if (posible_file != NULL)
{
if (posible_file->gid < currentUsr.group)
return -2;
if (posible_file->identifier == LINK) {
posible_file = fs_get_inode(posible_file->link);
}
if ((fd = search_for_inode(posible_file->iNode_number)) != -1) {
return fd;
} else {
return insert_fd(posible_file->iNode_number);
}
} else {
if (flags == 0) {
do_creat(filename, mode);
} else {
return -1;
}
}
}
void create_n_bytes(char * name) {
int size, fd, i, a;
size = 10485760; //10mb
int cant = size / (512);
char * buffer = malloc(BLOCK_SIZE);
fd = do_creat(name, 777);
printf("SIZE:%d\n", size);
for (i = 0; i < (512); i++) {
buffer[i] = '2';
}
buffer[i] = '\0';
printf("len:%d\n", str_len(buffer));
printf("cant:%d\n", cant);
for (i = 0; i < cant; i++) {
a = write(fd, buffer, str_len(buffer));
//printf("i:%d,a:%d\n",i,a);
}
printf("Se escrbieron:%d\n", getsize(fd));
close(fd);
return;
}
int creat_in_kernel(creat_param * param) {
char * filename = malloc(str_len(param->filename));
int mode = param->mode;
memcpy(filename, param->filename, str_len(filename));
return do_creat(filename, 777);
}
void touch_in_kernel(char * filename) {
int fd;
if ((fd = do_creat(filename, 777)) == -1) {
printf("\nCreat error");
} else {
printf("\nFile created succesfully");
}
return;
}
void init_filesystem(char * filesystem_name, masterBootRecord * mbr) {
/*mbr sector*/
int fd;
user * users = calloc(sizeof(user), 100);
memcpy(users[0].name, "chinux", str_len("chinux"));
memcpy(users[0].password, "chinux", str_len("chinux"));
users[0].usrID = 1;
users[0].group = ADMIN;
mbr->existFS = 1;
write_disk(0, MBRSECTOR, mbr, BLOCK_SIZE, 0); //BLOCK_SIZE
/* superBlock sector */
superblock->name = "Chinux";
superblock->blockSize = BLOCK_SIZE;
superblock->freeBlocks = DISK_SIZE / BLOCK_SIZE;
superblock->usedBlocks = 0;
superblock->root = NULL;
write_disk(0, SUPERBLOCKSECTOR, superblock, BLOCK_SIZE, 0);
/* bitmap Sectors */
init_bitmap();
/* inodemap Sectors */
init_inodemap();
/* Root node & current node */
init_root();
write_disk(0, 1, superblock, BLOCK_SIZE, 0);
current = superblock->root;
makeDir("users");
makeDir("etc");
fd = do_creat("usersfile", 777);
write(fd, (char *) users, sizeof(user) * 100);
close(fd);
return;
}
void createusr(char * name, char * password, char * group)
{
int i, fd, length;
user * usr;
iNode * aux;
aux = current;
current = superblock->root;
fd = do_open("usersfile", 777, 777);
usr = malloc(sizeof(user) * 100);
do_read(fd, (char *)usr, sizeof(user) * 100);
for(i = 0; i < 100 && usr[i].usrID; i++)
if(strcmp(usr[i].name, name))
{
printf("Error: User already exists.\n");
return ;
}
if(i == 100)
{
printf("Error: Too many users created.\n");
return ;
}
length = str_len(name);
name[length - 1] = 0;
memcpy(usr[i].name, name, length - 1);
length = str_len(password);
password[length - 1] = 0;
memcpy(usr[i].password, password, length - 1);
usr[i].usrID = ++usrID;
if(strcmp(group, "admin"))
usr[i].group = ADMIN;
else
usr[i].group = USR;
do_close(fd);
rmDir("usersfile");
fd = do_creat("usersfile", 777);
write(fd, (void *)usr, sizeof(user) * 100);
do_close(fd);
current = aux;
//free(usr);
return;
}
int
open_test()
{
int ret = 0;
printf("open_test: Start\n");
/*
* Create new file
*/
printf("\tbegin: Create new file(%s) \n", NEW_FILE_PATH_1);
if((ret = do_creat(NEW_FILE_PATH_1, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) != 0){
goto out;
}
printf("\tend: Success\n");
/*
* Open Existing file
*/
printf("\tbegin: Open existing file(%s) with O_RDONLY flag\n", NEW_FILE_PATH_1);
if((ret = do_open(NEW_FILE_PATH_1, O_RDONLY, 0)) != 0){
goto out;
}
printf("\tend: Success\n");
/*
* Open new file with O_CREAT
*/
printf("\tbegin: Open new file(%s) with O_CREAT flag\n", NEW_FILE_PATH_2);
if((ret = do_open(NEW_FILE_PATH_2, O_WRONLY | O_CREAT | O_TRUNC| O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) != 0){
goto out;
}
printf("\tend: Success\n");
/*
* Open Existing file with O_EXCL & O_CREATE flag
*/
printf("\tbegin: Open existing file(%s) with O_EXCL & O_CREAT flag\n", NEW_FILE_PATH_1);
if((do_open(NEW_FILE_PATH_1, O_WRONLY | O_CREAT | O_TRUNC| O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) != EEXIST){
ret = 1;
goto out;
}
printf("\tend: Success\n");
/*
* Create new file on newly created dir
*/
printf("\tbegin: Open new file(%s) on new directory\n", NEW_FILE_PATH_5);
if((ret = do_creat(NEW_FILE_PATH_5, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) != 0){
goto out;
}
printf("\tend: Success\n");
out:
if (ret) {
printf("\tend: Failed\n");
}
printf("open_test: Finish\n");
return ret;
}
