1 files changed, 76 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_kill.c b/lib/libthr/thread/thr_kill.c
new file mode 100644
index 0000000000000..59b8b1567011b
--- /dev/null
+++ b/lib/libthr/thread/thr_kill.c
@@ -0,0 +1,76 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <errno.h>
+#include <signal.h>
+#include <pthread.h>
+#include "un-namespace.h"
+
+#include "thr_private.h"
+
+__weak_reference(_pthread_kill, pthread_kill);
+
+int
+_pthread_kill(pthread_t pthread, int sig)
+{
+	struct pthread *curthread;
+	int ret;
+
+	/* Check for invalid signal numbers: */
+	if (sig < 0 || sig > _SIG_MAXSIG)
+		/* Invalid signal: */
+		return (EINVAL);
+
+	curthread = _get_curthread();
+
+	/*
+	 * Ensure the thread is in the list of active threads, and the
+	 * signal is valid (signal 0 specifies error checking only) and
+	 * not being ignored:
+	 */
+	if (curthread == pthread) {
+		if (sig > 0)
+			_thr_send_sig(pthread, sig);
+		ret = 0;
+	} else if ((ret = _thr_find_thread(curthread, pthread,
+	    /*include dead*/0)) == 0) {
+		if (sig > 0)
+			_thr_send_sig(pthread, sig);
+		THR_THREAD_UNLOCK(curthread, pthread);
+	}
+
+	/* Return the completion status: */
+	return (ret);
+}