static int FORMAT (test_input_t *t)
{
t->sfs = sfs_create(0, t->fd, 0);
if(t->sfs == NULL) return FAIL;
info("format!!");
if(sfs_format(t->sfs, O_FAT|O_HASH_ROOT_DIR, sfs_size, block_size) == FAIL) return FAIL;
sfs_destroy(t->sfs);
return SUCCESS;
}
static int LOAD (test_input_t *t)
{
t->sfs = sfs_create(0, t->fd, 0);
if(t->sfs == NULL) {
return FAIL;
}
if(sfs_open(t->sfs, t->load_option) == FAIL) {
error("TEST>can't load sfs");
return FAIL;
}
return SUCCESS;
}
void browse_sfs(int sfs_handle)
{
int done;
char cmd[256], *fn;
int ret, perm;
done = 0;
printf("Welcome to SFS Browsing Shell v3.0\n\n");
printf("Block size : %d bytes\n", sb.block_size);
printf("Partition size : %d blocks\n", sb.partition_size);
printf("File entry size: %d bytes\n", sb.entry_size);
printf("Entry tbl size : %d blocks\n", sb.entry_table_size);
printf("Entry count : %d\n", sb.entry_count);
printf("\n");
init_browsing(sfs_handle);
while (!done)
{
printf(" $> ");
ret = scanf("%[^\n]", cmd);
if (ret < 0)
{
done = 1;
printf("\n");
continue;
}
else
{
getchar();
if (ret == 0) continue;
}
if (strcmp(cmd, "?") == 0)
{
usage();
continue;
}
else if (strcmp(cmd, "quit") == 0)
{
done = 1;
continue;
}
else if (strcmp(cmd, "list") == 0)
{
sfs_list(sfs_handle);
continue;
}
else if (strncmp(cmd, "create", 6) == 0)
{
if (cmd[6] == ' ')
{
fn = cmd + 7;
while (*fn == ' ') fn++;
if (*fn != '\0')
{
sfs_create(sfs_handle, fn);
continue;
}
}
}
else if (strncmp(cmd, "remove", 6) == 0)
{
if (cmd[6] == ' ')
{
fn = cmd + 7;
while (*fn == ' ') fn++;
if (*fn != '\0')
{
sfs_remove(sfs_handle, fn);
continue;
}
}
}
else if (strncmp(cmd, "chperm", 6) == 0)
{
if (cmd[6] == ' ')
{
perm = cmd[7] - '0';
if ((0 <= perm) && (perm <= 7) && (cmd[8] == ' '))
{
fn = cmd + 9;
while (*fn == ' ') fn++;
if (*fn != '\0')
{
sfs_chperm(sfs_handle, fn, perm);
continue;
}
}
}
}
else if (strncmp(cmd, "read", 4) == 0)
{
if (cmd[4] == ' ')
{
fn = cmd + 5;
while (*fn == ' ') fn++;
if (*fn != '\0')
{
sfs_read(sfs_handle, fn);
continue;
}
}
}
else if (strncmp(cmd, "write", 5) == 0)
{
if (cmd[5] == ' ')
{
fn = cmd + 6;
while (*fn == ' ') fn++;
if (*fn != '\0')
{
sfs_write(sfs_handle, fn);
continue;
}
}
}
printf("Unknown/Incorrect command: %s\n", cmd);
usage();
}
shut_browsing(sfs_handle);
}
main()
{
int i;
int retval; /* used to hold return values of file system calls */
/* do forever:
1) print a list of available commands
2) read a command
3) read arguments for the command
4) perform the requested operation
5) display the results of the operation
*/
while(1) {
/* print a list of available commands */
printf("\n");
printf("o: open a file\n");
printf("r: read from a file\n");
printf("w: write to a file\n");
printf("R: read from a directory\n");
printf("c: close a file\n");
printf("m: create (make) a new file\n");
printf("d: delete a file\n");
printf("s: get the size of a file\n");
printf("t: get the type of a file\n");
printf("i: initialize the file system\n");
printf("q: quit - exit this program\n");
/* read in the next command */
printf("\nCommand? ");
if (gets(command_buffer) == NULL) break;
/* determine which command was requested */
switch(command_buffer[0]) {
case 'o':
/* Open a file */
printf("Enter full path name of file to open: ");
scanf(INPUT_BUF_FORMAT,data_buffer_1);
retval = sfs_open(data_buffer_1);
if (retval >= 0) {
printf("Open succeeded. File Descriptor number is %d\n",retval);
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'r':
/* Read from a file */
printf("Enter file descriptor number: ");
scanf("%d",&p1);
printf("Enter read start location: ");
scanf("%d",&p2);
printf("Enter number of bytes to read: ");
scanf("%d",&p3);
retval = sfs_read(p1,p2,p3,io_buffer);
if (retval > 0) {
printf("Read succeeded.\n");
printf("The following data was read (only printable ASCII will display)\n");
for(i=0;i<p3;i++) {
putchar(io_buffer[i]);
}
printf("\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'w':
/* Write to a file */
printf("Enter file descriptor number: ");
scanf("%d",&p1);
printf("Enter write start location: ");
scanf("%d",&p2);
printf("Enter number of bytes to write: ");
scanf("%d",&p3);
printf("This program allows only non-white-space, printable ASCII characters to be written to a file.\n");
printf("Enter %d characters to be written: ",p3);
scanf(IO_BUF_FORMAT,io_buffer);
retval = sfs_write(p1,p2,p3,io_buffer);
if (retval > 0) {
printf("Write succeeded.\n");
printf("Wrote %s to the disk\n",io_buffer);
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'R':
/* Read from a directory */
printf("Enter file descriptor number: ");
scanf("%d",&p1);
retval = sfs_readdir(p1,io_buffer);
if (retval > 0) {
printf("sfs_readdir succeeded.\n");
printf("Directory entry is: %s\n",io_buffer);
}
else if (retval == 0) {
printf("sfs_readdir succeeded.\n");
printf("No more entries in this directory\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'c':
/* Close a file */
printf("Enter file descriptor number: ");
scanf("%d",&p1);
retval = sfs_close(p1);
if (retval > 0) {
printf("sfs_close succeeded.\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'm':
/* Create a new file */
printf("Enter full path name of new file: ");
scanf(INPUT_BUF_FORMAT,data_buffer_1);
printf("Enter 0 for regular file, 1 for directory: ");
scanf("%d",&p1);
retval = sfs_create(data_buffer_1,p1);
if (retval > 0) {
printf("sfs_create succeeded.\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'd':
/* Delete a file */
printf("Enter full path name of file to delete: ");
scanf(INPUT_BUF_FORMAT,data_buffer_1);
retval = sfs_delete(data_buffer_1);
if (retval > 0) {
printf("sfs_delete succeeded.\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 's':
/* Get the size of a file */
printf("Enter full path name of file: ");
scanf(INPUT_BUF_FORMAT,data_buffer_1);
retval = sfs_getsize(data_buffer_1);
if (retval >= 0) {
printf("sfs_getsize succeeded.\n");
printf("size = %d\n",retval);
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 't':
/* Get the type of a file */
printf("Enter full path name of file: ");
scanf(INPUT_BUF_FORMAT,data_buffer_1);
retval = sfs_gettype(data_buffer_1);
if (retval >= 0) {
printf("sfs_gettype succeeded.\n");
if (retval == 0) {
printf("file type is REGULAR\n");
}
else if (retval == 1) {
printf("file type is DIRECTORY\n");
}
else {
printf("file has unknown type %d\n",retval);
}
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'i':
/* Initialize the file system */
printf("Enter 1 to erase disk while initializing, 0 otherwise: ");
scanf("%d",&p1);
retval = sfs_initialize(p1);
if (retval > 0) {
printf("sfs_initialize succeeded.\n");
}
else {
printf("Error. Return value was %d\n",retval);
}
break;
case 'q':
/* Quit this program */
break;
default:
printf("Unknown command: %s\n",command_buffer);
break;
}
if (command_buffer[0] == 'q') break;
/* cleanup the newline that remains after reading command parameter(s) */
gets(command_buffer);
}
}
