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-rw-r--r--workspace/networkDiscovery/dhcpcd/signal.c183
1 files changed, 0 insertions, 183 deletions
diff --git a/workspace/networkDiscovery/dhcpcd/signal.c b/workspace/networkDiscovery/dhcpcd/signal.c
deleted file mode 100644
index 9055c9f..0000000
--- a/workspace/networkDiscovery/dhcpcd/signal.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * dhcpcd - DHCP client daemon
- * Copyright 2006-2008 Roy Marples <roy@marples.name>
- * All rights reserved
-
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <errno.h>
-#include <poll.h>
-#include <signal.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common.h"
-#include "logger.h"
-#include "signal.h"
-
-static int signal_pipe[2];
-static int signals[5];
-
-static const int handle_sigs[] = {
- SIGHUP,
- SIGALRM,
- SIGTERM,
- SIGINT
-};
-
-static void signal_handler (int sig)
-{
- unsigned int i = 0;
- int serrno = errno;
-
- /* Add a signal to our stack */
- while (signals[i])
- i++;
- if (i > sizeof (signals) / sizeof (signals[0]))
- logger (LOG_ERR, "signal buffer overrun");
- else
- signals[i] = sig;
-
- if (write (signal_pipe[1], &sig, sizeof (sig)) == -1)
- logger (LOG_ERR, "Could not send signal: %s", strerror (errno));
-
- /* Restore errno */
- errno = serrno;
-}
-
-int signal_fd (void)
-{
- return (signal_pipe[0]);
-}
-
-/* Check if we have a signal or not */
-int signal_exists (const struct pollfd *fd)
-{
- if (signals[0] || (fd && fd->revents & POLLIN))
- return (0);
- return (-1);
-}
-
-/* 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 signal_read (struct pollfd *fd)
-{
- int sig = -1;
-
- /* Pop a signal off the our stack */
- if (signals[0]) {
- unsigned int i = 0;
- sig = signals[0];
- while (i < (sizeof (signals) / sizeof (signals[0])) - 1) {
- signals[i] = signals[i + 1];
- if (! signals[++i])
- break;
- }
- }
-
- if (fd && fd->revents & POLLIN) {
- char buf[16];
- size_t bytes;
-
- memset (buf, 0, sizeof (buf));
- bytes = read (signal_pipe[0], buf, sizeof (buf));
-
- if (bytes >= sizeof (sig))
- memcpy (&sig, buf, sizeof (sig));
-
- /* We need to clear us from rset if nothing left in the buffer
- * in case we are called many times */
- if (bytes == sizeof (sig))
- fd->revents = 0;
- }
-
- return (sig);
-}
-
-/* Call this before doing anything else. Sets up the socket pair
- * and installs the signal handler */
-int signal_init (void)
-{
- struct sigaction sa;
-
- if (pipe (signal_pipe) == -1) {
- logger (LOG_ERR, "pipe: %s", strerror (errno));
- return (-1);
- }
-
- /* Stop any scripts from inheriting us */
- close_on_exec (signal_pipe[0]);
- close_on_exec (signal_pipe[1]);
-
- /* Ignore child signals and don't make zombies.
- * Because we do this, we don't need to be in signal_setup */
- memset (&sa, 0, sizeof (sa));
- sa.sa_handler = SIG_DFL;
- sa.sa_flags = SA_NOCLDSTOP | SA_NOCLDWAIT;
- if (sigaction (SIGCHLD, &sa, NULL) == -1) {
- logger (LOG_ERR, "sigaction: %s", strerror (errno));
- return (-1);
- }
-
- memset (signals, 0, sizeof (signals));
- return (0);
-}
-
-int signal_setup (void)
-{
- unsigned int i;
- struct sigaction sa;
-
- memset (&sa, 0, sizeof (sa));
- sa.sa_handler = signal_handler;
- sigemptyset (&sa.sa_mask);
-
- for (i = 0; i < sizeof (handle_sigs) / sizeof (handle_sigs[0]); i++)
- if (sigaction (handle_sigs[i], &sa, NULL) == -1) {
- logger (LOG_ERR, "sigaction: %s", strerror (errno));
- return (-1);
- }
-
- return (0);
-}
-
-int signal_reset (void)
-{
- struct sigaction sa;
- unsigned int i;
-
- memset (&sa, 0, sizeof (sa));
- sa.sa_handler = SIG_DFL;
- sigemptyset (&sa.sa_mask);
-
- for (i = 0; i < sizeof (handle_sigs) / sizeof (handle_sigs[0]); i++)
- if (sigaction (handle_sigs[i], &sa, NULL) == -1) {
- logger (LOG_ERR, "sigaction: %s", strerror (errno));
- return (-1);
- }
-
- return (0);
-}