--- /dev/null
+/*****************************************************************************\
+ * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ * Copyright (C) 2007 The Regents of the University of California.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
+ * UCRL-CODE-235197
+ *
+ * This file is part of the SPL, Solaris Porting Layer.
+ * For details, see <http://github.com/behlendorf/spl/>.
+ *
+ * The SPL is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * The SPL is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the SPL. If not, see <http://www.gnu.org/licenses/>.
+ *****************************************************************************
+ * Solaris Porting LAyer Tests (SPLAT) Zlib Compression Tests.
+\*****************************************************************************/
+
+#include "splat-internal.h"
+
+#define SPLAT_ZLIB_NAME "zlib"
+#define SPLAT_ZLIB_DESC "Zlib Compression Tests"
+
+#define SPLAT_ZLIB_TEST1_ID 0x0f01
+#define SPLAT_ZLIB_TEST1_NAME "compress/uncompress"
+#define SPLAT_ZLIB_TEST1_DESC "Compress/Uncompress Test"
+
+#define BUFFER_SIZE (128 * 1024)
+
+static int
+splat_zlib_test1_check(struct file *file, void *src, void *dst, void *chk,
+ int level)
+{
+ size_t dst_len = BUFFER_SIZE;
+ size_t chk_len = BUFFER_SIZE;
+ int rc;
+
+ memset(dst, 0, BUFFER_SIZE);
+ memset(chk, 0, BUFFER_SIZE);
+
+ rc = z_compress_level(dst, &dst_len, src, BUFFER_SIZE, level);
+ if (rc != Z_OK) {
+ splat_vprint(file, SPLAT_ZLIB_TEST1_NAME,
+ "Failed level %d z_compress_level(), %d\n", level, rc);
+ return -EINVAL;
+ }
+
+ rc = z_uncompress(chk, &chk_len, dst, dst_len);
+ if (rc != Z_OK) {
+ splat_vprint(file, SPLAT_ZLIB_TEST1_NAME,
+ "Failed level %d z_uncompress(), %d\n", level, rc);
+ return -EINVAL;
+ }
+
+ rc = memcmp(src, chk, BUFFER_SIZE);
+ if (rc) {
+ splat_vprint(file, SPLAT_ZLIB_TEST1_NAME,
+ "Failed level %d memcmp()), %d\n", level, rc);
+ return -EINVAL;
+ }
+
+ splat_vprint(file, SPLAT_ZLIB_TEST1_NAME,
+ "Passed level %d, compressed %d bytes to %d bytes\n",
+ level, BUFFER_SIZE, (int)dst_len);
+
+ return 0;
+}
+
+/*
+ * Compress a buffer, uncompress the newly compressed buffer, then
+ * compare it to the original. Do this for all 9 compression levels.
+ */
+static int
+splat_zlib_test1(struct file *file, void *arg)
+{
+ void *src = NULL, *dst = NULL, *chk = NULL;
+ int i, rc, level;
+
+ src = vmalloc(BUFFER_SIZE);
+ if (src == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ dst = vmalloc(BUFFER_SIZE);
+ if (dst == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ chk = vmalloc(BUFFER_SIZE);
+ if (chk == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* Source buffer is a repeating 1024 byte random pattern. */
+ random_get_pseudo_bytes(src, sizeof(uint8_t) * 1024);
+ for (i = 1; i < 128; i++)
+ memcpy(src + (i * 1024), src, 1024);
+
+ for (level = 1; level <= 9; level++)
+ if ((rc = splat_zlib_test1_check(file, src, dst, chk, level)))
+ break;
+out:
+ if (src)
+ vfree(src);
+
+ if (dst)
+ vfree(dst);
+
+ if (chk)
+ vfree(chk);
+
+ return rc;
+}
+
+splat_subsystem_t *
+splat_zlib_init(void)
+{
+ splat_subsystem_t *sub;
+
+ sub = kmalloc(sizeof(*sub), GFP_KERNEL);
+ if (sub == NULL)
+ return NULL;
+
+ memset(sub, 0, sizeof(*sub));
+ strncpy(sub->desc.name, SPLAT_ZLIB_NAME, SPLAT_NAME_SIZE);
+ strncpy(sub->desc.desc, SPLAT_ZLIB_DESC, SPLAT_DESC_SIZE);
+ INIT_LIST_HEAD(&sub->subsystem_list);
+ INIT_LIST_HEAD(&sub->test_list);
+ spin_lock_init(&sub->test_lock);
+ sub->desc.id = SPLAT_SUBSYSTEM_ZLIB;
+
+ SPLAT_TEST_INIT(sub, SPLAT_ZLIB_TEST1_NAME, SPLAT_ZLIB_TEST1_DESC,
+ SPLAT_ZLIB_TEST1_ID, splat_zlib_test1);
+
+ return sub;
+}
+
+void
+splat_zlib_fini(splat_subsystem_t *sub)
+{
+ ASSERT(sub);
+
+ SPLAT_TEST_FINI(sub, SPLAT_ZLIB_TEST1_ID);
+
+ kfree(sub);
+}
+
+int
+splat_zlib_id(void) {
+ return SPLAT_SUBSYSTEM_ZLIB;
+}
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