/*
- * Copyright (C) 2004-2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2004-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
}
/**
- * Wrapper around signal(2).
+ * Install the given handler for the given signal.
*
* \param sig The number of the signal to catch.
+ * \param handler to be installed, \p SIG_IGN, or \p SIG_DFL.
*
- * This installs the generic signal handler for the given signal.
+ * \return This function returns 1 on success and \p -E_SIGNAL_SIG_ERR on
+ * errors.
*
- * \return This function returns 1 on success and \p -E_SIGNAL_SIG_ERR on errors.
+ * \sa sigaction(2).
+ */
+int para_sigaction(int sig, void (*handler)(int))
+{
+ struct sigaction act;
+
+ PARA_DEBUG_LOG("catching signal %d\n", sig);
+ act.sa_handler = handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+ if (sig == SIGALRM) {
+ #ifdef SA_INTERRUPT /* SunOS */
+ act.sa_flags |= SA_INTERRUPT;
+ #endif
+ } else {
+ #ifdef SA_RESTART /* BSD */
+ act.sa_flags |= SA_RESTART;
+ #endif
+ }
+ if (sigaction(sig, &act, NULL) < 0)
+ return -E_SIGNAL_SIG_ERR;
+ return 1;
+}
+
+/**
+ * Install the generic signal handler for the given signal number.
+ *
+ * \param sig The number of the signal to catch.
+ *
+ * \return This function returns 1 on success and \p -E_SIGNAL_SIG_ERR on
+ * errors.
*
- * \sa signal(2).
+ * \sa signal(2), sigaction(2).
*/
int para_install_sighandler(int sig)
{
- PARA_DEBUG_LOG("catching signal %d\n", sig);
- return signal(sig, &generic_signal_handler) == SIG_ERR? -E_SIGNAL_SIG_ERR : 1;
+ return para_sigaction(sig, &generic_signal_handler);
}
/**