FreeCalypso > hg > freecalypso-tools
view rvinterf/libasync/interf.c @ 416:30f6d1c32c6f
doc/Flash-boot-defect article removed (no longer relevant)
This article is no longer relevant because the issue in question
only affected one (1) defective FCDEV3B board which was not
and never will be sold.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | 09b4fd9b3827 |
children |
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/* * This module implements the link to rvinterf. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "localsock.h" #include "exitcodes.h" extern int sock; u_char rvi_msg[LOCALSOCK_MAX_MSG]; int rvi_msg_len; static int rx_state, rx_left; static u_char *rx_ptr; void localsock_prep_for_length_rx() { rx_state = 0; rx_ptr = rvi_msg; rx_left = 2; } static void prep_for_message_rx() { rx_state = 1; rx_ptr = rvi_msg; rx_left = rvi_msg_len; } void process_msg_from_rvinterf() { switch (rvi_msg[0]) { case RVI2CLI_PKT_FROM_TARGET: process_pkt_from_target(); return; case RVI2CLI_LOCAL_CMD_RESP: if (rvi_msg_len < 2) goto bad; if (rvi_msg[1] == '+') return; tty_cleanup(); fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1, rvi_msg + 1); exit(ERROR_RVINTERF); default: bad: tty_cleanup(); fprintf(stderr, "Error: unexpected message type %02X from rvinterf\n", rvi_msg[0]); exit(ERROR_RVINTERF); } } void handle_rvinterf_input() { int cc; cc = read(sock, rx_ptr, rx_left); if (cc <= 0) { tty_cleanup(); perror("read from rvinterf socket"); exit(ERROR_RVINTERF); } rx_ptr += cc; rx_left -= cc; if (rx_left) return; /* got the thing, process it */ if (rx_state) { process_msg_from_rvinterf(); localsock_prep_for_length_rx(); } else { rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1]; if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) { tty_cleanup(); fprintf(stderr, "Invalid length from rvinterf: %02X%02X\n", rvi_msg[0], rvi_msg[1]); exit(ERROR_RVINTERF); } prep_for_message_rx(); } } void send_pkt_to_target(pkt, pktlen) u_char *pkt; { u_char hdrbuf[3]; int len1; len1 = pktlen + 1; hdrbuf[0] = len1 >> 8; hdrbuf[1] = len1 & 0xFF; hdrbuf[2] = CLI2RVI_PKT_TO_TARGET; write(sock, hdrbuf, 3); write(sock, pkt, pktlen); }