From 787140df3992ccc3ebdc09f6d2dcb584f580f49f Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Thu, 23 Mar 2006 23:44:29 +0000 Subject: remove in place of external link --- networking/udhcp/signalpipe.c | 78 ------------------------------------------- 1 file changed, 78 deletions(-) delete mode 100644 networking/udhcp/signalpipe.c (limited to 'networking/udhcp/signalpipe.c') diff --git a/networking/udhcp/signalpipe.c b/networking/udhcp/signalpipe.c deleted file mode 100644 index 074c8a603..000000000 --- a/networking/udhcp/signalpipe.c +++ /dev/null @@ -1,78 +0,0 @@ -/* signalpipe.c - * - * Signal pipe infrastructure. A reliable way of delivering signals. - * - * Russ Dill December 2003 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include -#include -#include -#include -#include - - -#include "signalpipe.h" -#include "common.h" - -static int signal_pipe[2]; - -static void signal_handler(int sig) -{ - if (send(signal_pipe[1], &sig, sizeof(sig), MSG_DONTWAIT) < 0) - DEBUG(LOG_ERR, "Could not send signal: %m"); -} - - -/* Call this before doing anything else. Sets up the socket pair - * and installs the signal handler */ -void udhcp_sp_setup(void) -{ - socketpair(AF_UNIX, SOCK_STREAM, 0, signal_pipe); - signal(SIGUSR1, signal_handler); - signal(SIGUSR2, signal_handler); - signal(SIGTERM, signal_handler); -} - - -/* Quick little function to setup the rfds. Will return the - * max_fd for use with select. Limited in that you can only pass - * one extra fd */ -int udhcp_sp_fd_set(fd_set *rfds, int extra_fd) -{ - FD_ZERO(rfds); - FD_SET(signal_pipe[0], rfds); - if (extra_fd >= 0) FD_SET(extra_fd, rfds); - return signal_pipe[0] > extra_fd ? signal_pipe[0] : extra_fd; -} - - -/* Read a signal from the signal pipe. Returns 0 if there is - * no signal, -1 on error (and sets errno appropriately), and - * your signal on success */ -int udhcp_sp_read(fd_set *rfds) -{ - int sig; - - if (!FD_ISSET(signal_pipe[0], rfds)) - return 0; - - if (read(signal_pipe[0], &sig, sizeof(sig)) < 0) - return -1; - - return sig; -} -- cgit v1.2.3