Please welcome ZFS - The last word in file systems.

ZFS file system was ported from OpenSolaris operating system. The code in under
CDDL license.

I'd like to thank all SUN developers that created this great piece of software.

Supported by:	Wheel LTD (http://www.wheel.pl/)
Supported by:	The FreeBSD Foundation (http://www.freebsdfoundation.org/)
Supported by:	Sentex (http://www.sentex.net/)

1 files changed, 245 insertions, 0 deletions

diff --git a/sys/compat/opensolaris/kern/opensolaris_kmem.c b/sys/compat/opensolaris/kern/opensolaris_kmem.c
new file mode 100644
index 0000000..2d6f3e5
--- /dev/null
+++ b/sys/compat/opensolaris/kern/opensolaris_kmem.c
@@ -0,0 +1,245 @@
+/*-
+ * Copyright (c) 2006-2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <vm/uma.h>
+#include <sys/kmem.h>
+#include <sys/debug.h>
+#include <sys/mutex.h>
+#include <sys/queue.h>
+#include <sys/stack.h>
+
+#ifdef _KERNEL
+static MALLOC_DEFINE(M_SOLARIS, "solaris", "Solaris");
+#else
+#define	malloc(size, type, flags)	malloc(size)
+#define	free(addr, type)		free(addr)
+#endif
+
+#ifdef KMEM_DEBUG
+struct kmem_item {
+	struct stack	stack;
+	LIST_ENTRY(kmem_item) next;
+};
+static LIST_HEAD(, kmem_item) kmem_items;
+static struct mtx kmem_items_mtx;
+MTX_SYSINIT(kmem_items_mtx, &kmem_items_mtx, "kmem_items", MTX_DEF);
+#endif	/* KMEM_DEBUG */
+
+void *
+zfs_kmem_alloc(size_t size, int kmflags)
+{
+	void *p;
+#ifdef KMEM_DEBUG
+	struct kmem_item *i;
+
+	size += sizeof(struct kmem_item);
+#endif
+	p = malloc(size, M_SOLARIS, kmflags);
+#ifndef _KERNEL
+	if (kmflags & KM_SLEEP)
+		assert(p != NULL);
+#endif
+#ifdef KMEM_DEBUG
+	if (p != NULL) {
+		i = p;
+		p = (u_char *)p + sizeof(struct kmem_item);
+		stack_save(&i->stack);
+		mtx_lock(&kmem_items_mtx);
+		LIST_INSERT_HEAD(&kmem_items, i, next);
+		mtx_unlock(&kmem_items_mtx);
+	}
+#endif
+	return (p);
+}
+
+void *
+kmem_zalloc(size_t size, int kmflags)
+{
+	return (kmem_alloc(size, kmflags | M_ZERO));
+}
+
+void
+zfs_kmem_free(void *buf, size_t size __unused)
+{
+#ifdef KMEM_DEBUG
+	struct kmem_item *i;
+
+	buf = (u_char *)buf - sizeof(struct kmem_item);
+	mtx_lock(&kmem_items_mtx);
+	LIST_FOREACH(i, &kmem_items, next) {
+		if (i == buf)
+			break;
+	}
+	ASSERT(i != NULL);
+	LIST_REMOVE(i, next);
+	mtx_unlock(&kmem_items_mtx);
+#endif
+	free(buf, M_SOLARIS);
+}
+
+static int
+kmem_std_constructor(void *mem, int size __unused, void *private, int flags)
+{
+	struct kmem_cache *cache = private;
+
+	return (cache->kc_constructor(mem, cache->kc_private, flags));
+}
+
+static void
+kmem_std_destructor(void *mem, int size __unused, void *private)
+{
+	struct kmem_cache *cache = private;
+
+	cache->kc_destructor(mem, cache->kc_private);
+}
+
+kmem_cache_t *
+kmem_cache_create(char *name, size_t bufsize, size_t align,
+    int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
+    void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags)
+{
+	kmem_cache_t *cache;
+
+	ASSERT(vmp == NULL);
+
+	cache = kmem_alloc(sizeof(*cache), KM_SLEEP);
+	strlcpy(cache->kc_name, name, sizeof(cache->kc_name));
+	cache->kc_constructor = constructor;
+	cache->kc_destructor = destructor;
+	cache->kc_private = private;
+#ifdef _KERNEL
+	cache->kc_zone = uma_zcreate(cache->kc_name, bufsize,
+	    constructor != NULL ? kmem_std_constructor : NULL,
+	    destructor != NULL ? kmem_std_destructor : NULL,
+	    NULL, NULL, align > 0 ? align - 1 : 0, cflags);
+#else
+	cache->kc_size = bufsize;
+#endif
+
+	return (cache);
+}
+
+void
+kmem_cache_destroy(kmem_cache_t *cache)
+{
+	uma_zdestroy(cache->kc_zone);
+	kmem_free(cache, sizeof(*cache));
+}
+
+void *
+kmem_cache_alloc(kmem_cache_t *cache, int flags)
+{
+#ifdef _KERNEL
+	return (uma_zalloc_arg(cache->kc_zone, cache, flags));
+#else
+	void *p;
+
+	p = kmem_alloc(cache->kc_size, flags);
+	if (p != NULL) {
+		kmem_std_constructor(p, cache->kc_size, cache->kc_private,
+		    flags);
+	}
+	return (p);
+#endif
+}
+
+void
+kmem_cache_free(kmem_cache_t *cache, void *buf)
+{
+#ifdef _KERNEL
+	uma_zfree_arg(cache->kc_zone, buf, cache);
+#else
+	kmem_std_destructor(buf, cache->kc_size, cache->kc_private);
+	kmem_free(buf, cache->kc_size);
+#endif
+}
+
+#ifdef _KERNEL
+extern void zone_drain(uma_zone_t zone);
+void
+kmem_cache_reap_now(kmem_cache_t *cache)
+{
+	zone_drain(cache->kc_zone);
+}
+
+void
+kmem_reap(void)
+{
+	uma_reclaim();
+}
+#else
+void
+kmem_cache_reap_now(kmem_cache_t *cache __unused)
+{
+}
+
+void
+kmem_reap(void)
+{
+}
+#endif
+
+int
+kmem_debugging(void)
+{
+	return (0);
+}
+
+void *
+calloc(size_t n, size_t s)
+{
+	return (kmem_zalloc(n * s, KM_NOSLEEP));
+}
+
+#ifdef KMEM_DEBUG
+static void
+kmem_show(void *dummy __unused)
+{
+	struct kmem_item *i;
+
+	mtx_lock(&kmem_items_mtx);
+	if (LIST_EMPTY(&kmem_items))
+		printf("KMEM_DEBUG: No leaked elements.\n");
+	else {
+		printf("KMEM_DEBUG: Leaked elements:\n\n");
+		LIST_FOREACH(i, &kmem_items, next) {
+			printf("address=%p\n", i);
+			stack_print(&i->stack);
+			printf("\n");
+		}
+	}
+	mtx_unlock(&kmem_items_mtx);
+}
+
+SYSUNINIT(sol_kmem, SI_SUB_DRIVERS, SI_ORDER_FIRST, kmem_show, NULL);
+#endif	/* KMEM_DEBUG */