Add linux libspl support

All changes needed for the libspl layer.  This includes modifications
to files directly copied from OpenSolaris and the addition of new
files needed to fill in the gaps.

Signed-off-by: Brian Behlendorf <[email protected]>

1 files changed, 96 insertions, 0 deletions

diff --git a/lib/libspl/include/assert.h b/lib/libspl/include/assert.h
new file mode 100644
index 000000000..7f145b89a
--- /dev/null
+++ b/lib/libspl/include/assert.h
@@ -0,0 +1,96 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (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 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include_next <assert.h>
+
+#ifndef _LIBSPL_ASSERT_H
+#define _LIBSPL_ASSERT_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef __assert_c99
+static inline void
+__assert_c99(const char *expr, const char *file, int line, const char *func)
+{
+	fprintf(stderr, "%s:%i: %s: Assertion `%s` failed.\n",
+		file, line, func, expr);
+	abort();
+}
+#endif  /* __assert_c99 */
+
+#ifndef verify
+#if defined(__STDC__)
+#if __STDC_VERSION__ - 0 >= 199901L
+#define	verify(EX) (void)((EX) || \
+	(__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
+#else
+#define	verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
+#endif  /* __STDC_VERSION__ - 0 >= 199901L */
+#else
+#define	verify(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0))
+#endif	/* __STDC__ */
+#endif  /* verify */
+
+#undef VERIFY
+#undef ASSERT
+
+#define	VERIFY	verify
+#define	ASSERT	assert
+
+extern void __assert(const char *, const char *, int);
+
+/* BEGIN CSTYLED */
+#define	VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
+	const TYPE __left = (TYPE)(LEFT); \
+	const TYPE __right = (TYPE)(RIGHT); \
+	if (!(__left OP __right)) { \
+		char *__buf = alloca(256); \
+		(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
+			#LEFT, #OP, #RIGHT, \
+			(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
+		__assert(__buf, __FILE__, __LINE__); \
+	} \
+} while (0)
+/* END CSTYLED */
+
+#define	VERIFY3S(x, y, z)	VERIFY3_IMPL(x, y, z, int64_t)
+#define	VERIFY3U(x, y, z)	VERIFY3_IMPL(x, y, z, uint64_t)
+#define	VERIFY3P(x, y, z)	VERIFY3_IMPL(x, y, z, uintptr_t)
+
+#ifdef NDEBUG
+#define	ASSERT3S(x, y, z)	((void)0)
+#define	ASSERT3U(x, y, z)	((void)0)
+#define	ASSERT3P(x, y, z)	((void)0)
+#define	ASSERTV(x)
+#else
+#define	ASSERT3S(x, y, z)	VERIFY3S(x, y, z)
+#define	ASSERT3U(x, y, z)	VERIFY3U(x, y, z)
+#define	ASSERT3P(x, y, z)	VERIFY3P(x, y, z)
+#define	ASSERTV(x)		x
+#endif  /* NDEBUG */
+
+#endif  /* _LIBSPL_ASSERT_H */