extern "C" void delete_file (char *pathname, struct client client) {
struct decafs_file_stat file_info;
uint32_t num_chunks = 0, request_id = get_new_request_id();
// If the file doesn't exist
if ((decafs_file_sstat (pathname, &file_info, client)) < 0) {
// TODO halli check if this change is correct
// old call
//if (send_delete_result (client, 0, FILE_NOT_FOUND) < 0) {
if (send_remove_result (client, FILE_NOT_FOUND) < 0) {
printf ("\tDelete result could not reach client.\n");
}
return;
}
if (get_exclusive_lock (client, file_info.file_id) < 0) {
// TODO halli check if this change is correct
// old call
//if (send_delete_result (client, 0, FILE_IN_USE) < 0) {
if (send_remove_result (client, FILE_IN_USE) < 0) {
printf ("\tDelete result could not reach client.\n");
}
return;
}
// Save the request id.
active_delete_requests[request_id] = request_info (client, file_info.file_id);
printf ("(request: %d) processing delete file %s\n", request_id, pathname);
num_chunks = process_delete_file (request_id, file_info.file_id);
assert (delete_request_exists (request_id));
active_delete_requests[request_id].chunks_expected = num_chunks;
check_delete_complete(request_id);
}
void check_delete_complete (uint32_t request_id) {
assert (delete_request_exists (request_id));
if (active_delete_requests[request_id].chunks_expected == 0) {
return;
}
if (active_delete_requests[request_id].chunks_expected ==
active_delete_requests[request_id].chunks_received) {
uint32_t file_id = active_delete_requests[request_id].file_id;
struct client client = active_delete_requests[request_id].client;
// TODO halli check if this change is correct
// old call if (send_delete_result (client, 0, 0) < 0) {
if (send_remove_result (client, 0) < 0) {
printf ("\tDelete result could not reach client.\n");
}
while (delete_file_contents (file_id, client) == NO_METADATA_LOCK) {
; // retry metadata deletion until we succeed
}
// release the lock on the file
release_lock (client, file_id);
active_delete_requests.erase (request_id);
}
}
extern "C" void delete_file(char* pathname, struct client client) {
send_remove_result(client, 0);
}
