1 files changed, 154 insertions, 0 deletions
diff --git a/usr/src/lib/libfakekernel/common/printf.c b/usr/src/lib/libfakekernel/common/printf.c
new file mode 100644
index 0000000000..1bcef683d1
--- /dev/null
+++ b/usr/src/lib/libfakekernel/common/printf.c
@@ -0,0 +1,154 @@
+/*
+ * 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 http://www.opensolaris.org/os/licensing.
+ * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/varargs.h>
+#include <sys/systm.h>
+#include <sys/cmn_err.h>
+#include <sys/log.h>
+
+#include <fakekernel.h>
+
+void	abort(void) __NORETURN;
+
+char *volatile panicstr;
+va_list  panicargs;
+char panicbuf[512];
+
+volatile int aok;
+
+static const int
+ce_flags[CE_IGNORE] = { SL_NOTE, SL_NOTE, SL_WARN, SL_FATAL };
+static const char
+ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" };
+static const char
+ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" };
+
+
+/*
+ * This function is just a stub, exported NODIRECT so that
+ * comsumers like fksmbd can provide their own.
+ * (One that actually prints the messages.)
+ *
+ * It's used by fakekernel_cprintf() below.
+ * The flags are SL_... from strlog.h
+ */
+/* ARGSUSED */
+void
+fakekernel_putlog(char *msg, size_t len, int flags)
+{
+}
+
+/*
+ * fakekernel_cprintf() corresponds to os/printf.c:cprintf()
+ * This formats the message and calls fakekernel_putlog().
+ * It's exported NODIRECT to allow replacment.
+ * The flags are SL_... from strlog.h
+ */
+void
+fakekernel_cprintf(const char *fmt, va_list adx, int flags,
+	const char *prefix, const char *suffix)
+{
+	size_t bufsize = LOG_MSGSIZE;
+	char buf[LOG_MSGSIZE];
+	char *bufp = buf;
+	char *msgp, *bufend;
+	size_t len;
+
+	if (strchr("^!?", fmt[0]) != NULL) {
+		if (fmt[0] == '^')
+			flags |= SL_CONSONLY;
+		else if (fmt[0] == '!')
+			flags |= SL_LOGONLY;
+		fmt++;
+	}
+
+	bufend = bufp + bufsize;
+	msgp = bufp;
+	msgp += snprintf(msgp, bufend - msgp, "[fake_kernel] ");
+	msgp += snprintf(msgp, bufend - msgp, prefix);
+	msgp += vsnprintf(msgp, bufend - msgp, fmt, adx);
+	msgp += snprintf(msgp, bufend - msgp, suffix);
+	len = msgp - bufp;
+
+	fakekernel_putlog(bufp, len, flags);
+}
+
+/*
+ * "User-level crash dump", if you will.
+ */
+void
+vpanic(const char *fmt, va_list adx)
+{
+	va_list tmpargs;
+
+	panicstr = (char *)fmt;
+	va_copy(panicargs, adx);
+
+	va_copy(tmpargs, adx);
+	fakekernel_cprintf(fmt, tmpargs, SL_FATAL, "fatal: ", "\n");
+
+	/* Call libc`assfail() so that mdb ::status works */
+	(void) vsnprintf(panicbuf, sizeof (panicbuf), fmt, adx);
+	assfail(panicbuf, "(panic)", 0);
+
+	abort();	/* avoid "noreturn" warnings */
+}
+
+void
+panic(const char *fmt, ...)
+{
+	va_list adx;
+
+	va_start(adx, fmt);
+	vpanic(fmt, adx);
+	va_end(adx);
+}
+
+void
+vcmn_err(int ce, const char *fmt, va_list adx)
+{
+
+	if (ce == CE_PANIC)
+		vpanic(fmt, adx);
+	if (ce >= CE_IGNORE)
+		return;
+
+	fakekernel_cprintf(fmt, adx, ce_flags[ce] | SL_CONSOLE,
+	    ce_prefix[ce], ce_suffix[ce]);
+}
+
+/*PRINTFLIKE2*/
+void
+cmn_err(int ce, const char *fmt, ...)
+{
+	va_list adx;
+
+	va_start(adx, fmt);
+	vcmn_err(ce, fmt, adx);
+	va_end(adx);
+}