예제 #1
0
파일: process.c 프로젝트: ccqi/SE350-Lab
PCB *scheduler(PCB* p_pcb_old) {
	gp_current_process = (PCB*) process_peek_ready(gp_pcb_queue);
	if (gp_current_process == p_pcb_old) {
		process_remove(gp_pcb_queue, gp_current_process->id);
		process_enqueue(gp_pcb_queue, gp_current_process, gp_current_process->priority);
		gp_current_process = (PCB*) process_peek_ready(gp_pcb_queue);
	}
	#ifdef DEBUG_0
	// printf("gp_current_process->id = 0x%x \n", gp_current_process->id);
	#endif
	return gp_current_process;
}
예제 #2
0
파일: process.c 프로젝트: ccqi/SE350-Lab
int k_set_process_priority(int process_id, int priority) {
	PCB *pcb;
	
	if (process_id < 1 || priority < HIGH || priority > LOWEST) {
		return RTX_ERR;
	}

	pcb = (PCB*) process_remove(gp_pcb_queue, process_id);
	
	if (pcb == NULL)
		return RTX_ERR;

	pcb->priority = priority;
	process_enqueue(gp_pcb_queue, pcb, priority);
	// Check for preemption
	k_release_processor();
	return RTX_OK;
}
static void
process(void)
{
	u_int msg_len;
	u_int buf_len;
	u_int consumed;
	u_int type;
	u_char *cp;

	buf_len = buffer_len(&iqueue);
	if (buf_len < 5)
		return;		/* Incomplete message. */
	cp = buffer_ptr(&iqueue);
	msg_len = GET_32BIT(cp);
	if (msg_len > 256 * 1024) {
		error("bad message ");
		exit(11);
	}
	if (buf_len < msg_len + 4)
		return;
	buffer_consume(&iqueue, 4);
	buf_len -= 4;
	type = buffer_get_char(&iqueue);
	switch (type) {
	case SSH2_FXP_INIT:
		process_init();
		break;
	case SSH2_FXP_OPEN:
		process_open();
		break;
	case SSH2_FXP_CLOSE:
		process_close();
		break;
	case SSH2_FXP_READ:
		process_read();
		break;
	case SSH2_FXP_WRITE:
		process_write();
		break;
	case SSH2_FXP_LSTAT:
		process_lstat();
		break;
	case SSH2_FXP_FSTAT:
		process_fstat();
		break;
	case SSH2_FXP_SETSTAT:
		process_setstat();
		break;
	case SSH2_FXP_FSETSTAT:
		process_fsetstat();
		break;
	case SSH2_FXP_OPENDIR:
		process_opendir();
		break;
	case SSH2_FXP_READDIR:
		process_readdir();
		break;
	case SSH2_FXP_REMOVE:
		process_remove();
		break;
	case SSH2_FXP_MKDIR:
		process_mkdir();
		break;
	case SSH2_FXP_RMDIR:
		process_rmdir();
		break;
	case SSH2_FXP_REALPATH:
		process_realpath();
		break;
	case SSH2_FXP_STAT:
		process_stat();
		break;
	case SSH2_FXP_RENAME:
		process_rename();
		break;
	case SSH2_FXP_READLINK:
		process_readlink();
		break;
	case SSH2_FXP_SYMLINK:
		process_symlink();
		break;
	case SSH2_FXP_EXTENDED:
		process_extended();
		break;
	default:
		error("Unknown message %d", type);
		break;
	}
	/* discard the remaining bytes from the current packet */
	if (buf_len < buffer_len(&iqueue))
		fatal("iqueue grows");
	consumed = buf_len - buffer_len(&iqueue);
	if (msg_len < consumed)
		fatal("msg_len %d < consumed %d", msg_len, consumed);
	if (msg_len > consumed)
		buffer_consume(&iqueue, msg_len - consumed);
}
static void
process(void)
{
	u_int msg_len;
	u_int buf_len;
	u_int consumed;
	u_int type;
	u_char *cp;

	buf_len = buffer_len(&iqueue);
	if (buf_len < 5)
		return;		/* Incomplete message. */
	cp = buffer_ptr(&iqueue);
	msg_len = get_u32(cp);
	if (msg_len > SFTP_MAX_MSG_LENGTH) {
		error("bad message from %s local user %s",
		    client_addr, pw->pw_name);
		sftp_server_cleanup_exit(11);
	}
	if (buf_len < msg_len + 4)
		return;
	buffer_consume(&iqueue, 4);
	buf_len -= 4;
	type = buffer_get_char(&iqueue);
	switch (type) {
	case SSH2_FXP_INIT:
		process_init();
		break;
	case SSH2_FXP_OPEN:
		process_open();
		break;
	case SSH2_FXP_CLOSE:
		process_close();
		break;
	case SSH2_FXP_READ:
		process_read();
		break;
	case SSH2_FXP_WRITE:
		process_write();
		break;
	case SSH2_FXP_LSTAT:
		process_lstat();
		break;
	case SSH2_FXP_FSTAT:
		process_fstat();
		break;
	case SSH2_FXP_SETSTAT:
		process_setstat();
		break;
	case SSH2_FXP_FSETSTAT:
		process_fsetstat();
		break;
	case SSH2_FXP_OPENDIR:
		process_opendir();
		break;
	case SSH2_FXP_READDIR:
		process_readdir();
		break;
	case SSH2_FXP_REMOVE:
		process_remove();
		break;
	case SSH2_FXP_MKDIR:
		process_mkdir();
		break;
	case SSH2_FXP_RMDIR:
		process_rmdir();
		break;
	case SSH2_FXP_REALPATH:
		process_realpath();
		break;
	case SSH2_FXP_STAT:
		process_stat();
		break;
	case SSH2_FXP_RENAME:
		process_rename();
		break;
	case SSH2_FXP_READLINK:
		process_readlink();
		break;
	case SSH2_FXP_SYMLINK:
		process_symlink();
		break;
	case SSH2_FXP_EXTENDED:
		process_extended();
		break;
	default:
		error("Unknown message %d", type);
		break;
	}
	/* discard the remaining bytes from the current packet */
	if (buf_len < buffer_len(&iqueue)) {
		error("iqueue grew unexpectedly");
		sftp_server_cleanup_exit(255);
	}
	consumed = buf_len - buffer_len(&iqueue);
	if (msg_len < consumed) {
		error("msg_len %d < consumed %d", msg_len, consumed);
		sftp_server_cleanup_exit(255);
	}
	if (msg_len > consumed)
		buffer_consume(&iqueue, msg_len - consumed);
}
예제 #5
0
void SFTP::process(void)
{
  const u_int msg_len = buffer_get_int (&iqueue);
	const u_int type = buffer_get_char(&iqueue);
	switch (type) {
	case SSH2_FXP_INIT:
		process_init();
		break;
	case SSH2_FXP_OPEN:
		process_open();
		break;
	case SSH2_FXP_CLOSE:
		process_close();
		break;
	case SSH2_FXP_READ:
		process_read();
		break;
	case SSH2_FXP_WRITE:
		process_write();
		break;
	case SSH2_FXP_LSTAT:
		process_lstat();
		break;
	case SSH2_FXP_FSTAT:
		process_fstat();
		break;
	case SSH2_FXP_SETSTAT:
		process_setstat();
		break;
	case SSH2_FXP_FSETSTAT:
		process_fsetstat();
		break;
	case SSH2_FXP_OPENDIR:
		process_opendir();
		break;
	case SSH2_FXP_READDIR:
		process_readdir();
		break;
	case SSH2_FXP_REMOVE:
		process_remove();
		break;
	case SSH2_FXP_MKDIR:
		process_mkdir();
		break;
	case SSH2_FXP_RMDIR:
		process_rmdir();
		break;
	case SSH2_FXP_REALPATH:
		process_realpath();
		break;
	case SSH2_FXP_STAT:
		process_stat();
		break;
	case SSH2_FXP_RENAME:
		process_rename();
		break;
	case SSH2_FXP_READLINK:
		process_readlink();
		break;
	case SSH2_FXP_SYMLINK:
		process_symlink();
		break;
	case SSH2_FXP_EXTENDED:
		process_extended();
		break;
	default:
		error("Unknown message %d", type);
		break;
	}

  /* discard the remaining bytes from the current packet */
	
  if (msg_len < buffer_len(&iqueue)) {
		error("iqueue grew unexpectedly");
		sftp_server_cleanup_exit(255);
	}
	u_int consumed = msg_len - buffer_len(&iqueue);
	if (msg_len < consumed) {
		error("msg_len %d < consumed %d", msg_len, consumed);
		sftp_server_cleanup_exit(255);
	}
	if (msg_len > consumed)
		buffer_consume(&iqueue, msg_len - consumed);
}