1 files changed, 116 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/assert.c b/sys/contrib/openzfs/lib/libspl/assert.c
new file mode 100644
index 000000000000..54d931104814
--- /dev/null
+++ b/sys/contrib/openzfs/lib/libspl/assert.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: CDDL-1.0
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or https://opensource.org/licenses/CDDL-1.0.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * Copyright (c) 2024, Rob Norris <robn@despairlabs.com>
+ */
+
+#include <assert.h>
+#include <pthread.h>
+#include <sys/backtrace.h>
+
+#if defined(__linux__)
+#include <errno.h>
+#include <sys/prctl.h>
+#ifdef HAVE_GETTID
+#define	libspl_gettid()		gettid()
+#else
+#include <sys/syscall.h>
+#define	libspl_gettid()		((pid_t)syscall(__NR_gettid))
+#endif
+#define	libspl_getprogname()	(program_invocation_short_name)
+#define	libspl_getthreadname(buf, len)	\
+	prctl(PR_GET_NAME, (unsigned long)(buf), 0, 0, 0)
+#elif defined(__FreeBSD__) || defined(__APPLE__)
+#if !defined(__APPLE__)
+#include <pthread_np.h>
+#define	libspl_gettid()		pthread_getthreadid_np()
+#endif
+#define	libspl_getprogname()	getprogname()
+#define	libspl_getthreadname(buf, len)	\
+	pthread_getname_np(pthread_self(), buf, len);
+#endif
+
+#if defined(__APPLE__)
+static inline uint64_t
+libspl_gettid(void)
+{
+	uint64_t tid;
+
+	if (pthread_threadid_np(NULL, &tid) != 0)
+		tid = 0;
+
+	return (tid);
+}
+#endif
+
+static boolean_t libspl_assert_ok = B_FALSE;
+
+void
+libspl_set_assert_ok(boolean_t val)
+{
+	libspl_assert_ok = val;
+}
+
+static pthread_mutex_t assert_lock = PTHREAD_MUTEX_INITIALIZER;
+
+/* printf version of libspl_assert */
+void
+libspl_assertf(const char *file, const char *func, int line,
+    const char *format, ...)
+{
+	pthread_mutex_lock(&assert_lock);
+
+	va_list args;
+	char tname[64];
+
+	libspl_getthreadname(tname, sizeof (tname));
+
+	fprintf(stderr, "ASSERT at %s:%d:%s()\n", file, line, func);
+
+	va_start(args, format);
+	vfprintf(stderr, format, args);
+	va_end(args);
+
+	fprintf(stderr, "\n"
+	    "  PID: %-8u  COMM: %s\n"
+#if defined(__APPLE__)
+	    "  TID: %-8" PRIu64 "  NAME: %s\n",
+#else
+	    "  TID: %-8u  NAME: %s\n",
+#endif
+	    getpid(), libspl_getprogname(),
+	    libspl_gettid(), tname);
+
+	libspl_backtrace(STDERR_FILENO);
+
+#if !__has_feature(attribute_analyzer_noreturn) && !defined(__COVERITY__)
+	if (libspl_assert_ok) {
+		pthread_mutex_unlock(&assert_lock);
+		return;
+	}
+#endif
+	abort();
+}