1 files changed, 113 insertions, 0 deletions
diff --git a/lib/libpthread/thread/thr_sigmask.c b/lib/libpthread/thread/thr_sigmask.c
new file mode 100644
index 0000000..70463a5
--- /dev/null
+++ b/lib/libpthread/thread/thr_sigmask.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by John Birrell.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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.
+ *
+ * $FreeBSD$
+ */
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/signalvar.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <pthread.h>
+#include "thr_private.h"
+
+__weak_reference(_pthread_sigmask, pthread_sigmask);
+
+int
+_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset)
+{
+	struct pthread *curthread = _get_curthread();
+	sigset_t oldset, newset;
+	int ret;
+
+	if (curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) {
+		ret = __sys_sigprocmask(how, set, oset);
+		if (ret != 0)
+			ret = errno;
+		/* Get a fresh copy */
+		__sys_sigprocmask(SIG_SETMASK, NULL, &curthread->sigmask);
+		return (ret);
+	}
+
+	if (set)
+		newset = *set;
+
+	THR_SCHED_LOCK(curthread, curthread);
+
+	ret = 0;
+	if (oset != NULL)
+		/* Return the current mask: */
+		oldset = curthread->sigmask;
+
+	/* Check if a new signal set was provided by the caller: */
+	if (set != NULL) {
+		/* Process according to what to do: */
+		switch (how) {
+		/* Block signals: */
+		case SIG_BLOCK:
+			/* Add signals to the existing mask: */
+			SIGSETOR(curthread->sigmask, newset);
+			break;
+
+		/* Unblock signals: */
+		case SIG_UNBLOCK:
+			/* Clear signals from the existing mask: */
+			SIGSETNAND(curthread->sigmask, newset);
+			break;
+
+		/* Set the signal process mask: */
+		case SIG_SETMASK:
+			/* Set the new mask: */
+			curthread->sigmask = newset;
+			break;
+
+		/* Trap invalid actions: */
+		default:
+			/* Return an invalid argument: */
+			ret = EINVAL;
+			break;
+		}
+		SIG_CANTMASK(curthread->sigmask);
+		THR_SCHED_UNLOCK(curthread, curthread);
+
+		/*
+		 * Run down any pending signals:
+		 */
+		if (ret == 0)
+		    _thr_sig_check_pending(curthread);
+	} else
+		THR_SCHED_UNLOCK(curthread, curthread);
+
+	if (ret == 0 && oset != NULL)
+		*oset = oldset;
+	return (ret);
+}