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-rw-r--r--uts/common/fs/zfs/gzip.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/gzip.c b/uts/common/fs/zfs/gzip.c
new file mode 100644
index 000000000000..b257d4af753c
--- /dev/null
+++ b/uts/common/fs/zfs/gzip.c
@@ -0,0 +1,69 @@
+/*
+ * 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 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <sys/debug.h>
+#include <sys/types.h>
+#include <sys/zmod.h>
+
+#ifdef _KERNEL
+#include <sys/systm.h>
+#else
+#include <strings.h>
+#endif
+
+size_t
+gzip_compress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n)
+{
+ size_t dstlen = d_len;
+
+ ASSERT(d_len <= s_len);
+
+ if (z_compress_level(d_start, &dstlen, s_start, s_len, n) != Z_OK) {
+ if (d_len != s_len)
+ return (s_len);
+
+ bcopy(s_start, d_start, s_len);
+ return (s_len);
+ }
+
+ return (dstlen);
+}
+
+/*ARGSUSED*/
+int
+gzip_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n)
+{
+ size_t dstlen = d_len;
+
+ ASSERT(d_len >= s_len);
+
+ if (z_uncompress(d_start, &dstlen, s_start, s_len) != Z_OK)
+ return (-1);
+
+ return (0);
+}