--- old/usr/src/uts/common/fs/cachefs/cachefs_module.c	Sat Sep 12 00:41:32 2015
+++ /dev/null	Fri Sep 11 21:22:37 2015
@@ -1,311 +0,0 @@
-/*
- * 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 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
- */
-
-#include <sys/errno.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/user.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/vfs.h>
-#include <sys/vnode.h>
-#include <rpc/types.h>
-#include <sys/mode.h>
-#include <sys/cmn_err.h>
-#include <sys/debug.h>
-#include <sys/fs/cachefs_fs.h>
-
-/*
- * This is the loadable module wrapper.
- */
-#include <sys/systm.h>
-#include <sys/modctl.h>
-#include <sys/syscall.h>
-
-extern time_t time;
-
-static int cachefs_init(int, char *);
-static void cachefs_fini();
-
-static int cachefs_unloadable = 0; /* tunable */
-static boolean_t cachefs_up = B_FALSE;
-
-uint_t cachefs_max_apop_inqueue = CACHEFS_MAX_APOP_INQUEUE;
-
-/*
- * this is a list of possible hash table sizes, for the `double
- * hashing' algorithm described in rosen's `elementary number theory
- * and its applications'.  minimally, this needs to be a list of
- * increasing prime integers, terminated by a 0.  ideally, they should
- * be the larger of twin primes; i.e. P and P-2 are both prime.
- */
-
-int cachefs_hash_sizes[] = {5, 2029, 4093, 8089, 16363, 32719, 0};
-
-/*
- * Module linkage information for the kernel.
- */
-
-static vfsdef_t vfs_z = {
-	VFSDEF_VERSION,
-	CACHEFS_BASETYPE,
-	cachefs_init,
-	VSW_CANREMOUNT,
-	NULL
-};
-
-static struct modlfs modlfs = {
-	&mod_fsops,
-	"cache filesystem",
-	&vfs_z
-};
-
-static struct modlinkage modlinkage = {
-	MODREV_1, (void *)&modlfs, NULL
-};
-
-int
-_init(void)
-{
-	int status;
-
-	status = mod_install(&modlinkage);
-	if (status != 0) {
-		/*
-		 * Could not load module, clean up the work performed
-		 * by cachefs_init() which was indirectly called by
-		 * mod_installfs() which in turn was called by mod_install().
-		 */
-		cachefs_fini();
-	}
-
-	return (status);
-}
-
-int
-_info(struct modinfo *modinfop)
-{
-	return (mod_info(&modlinkage, modinfop));
-}
-
-int
-_fini(void)
-{
-	int status;
-
-	if (!cachefs_unloadable)
-		return (EBUSY);
-
-	if ((status = mod_remove(&modlinkage)) == 0) {
-		/*
-		 * Module has been unloaded, now clean up
-		 */
-		cachefs_fini();
-	}
-
-	return (status);
-}
-
-extern kmutex_t cachefs_cachelock;		/* Cache list mutex */
-extern kmutex_t cachefs_newnum_lock;
-extern kmutex_t cachefs_kstat_key_lock;
-extern kmutex_t cachefs_rename_lock;
-extern kmutex_t cachefs_minor_lock;	/* Lock for minor device map */
-extern kmutex_t cachefs_kmem_lock;
-extern kmutex_t cachefs_async_lock;	/* global async work count */
-extern major_t cachefs_major;
-
-/*
- * Cache initialization routine.  This routine should only be called
- * once.  It performs the following tasks:
- *	- Initalize all global locks
- * 	- Call sub-initialization routines (localize access to variables)
- */
-static int
-cachefs_init(int fstyp, char *name)
-{
-	kstat_t *ksp;
-	int error;
-
-	ASSERT(cachefs_up == B_FALSE);
-
-	error = cachefs_init_vfsops(fstyp);
-	if (error != 0)
-		return (error);
-
-	error = cachefs_init_vnops(name);
-	if (error != 0)
-		return (error);
-
-	mutex_init(&cachefs_cachelock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_newnum_lock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_kstat_key_lock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_kmem_lock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_rename_lock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_minor_lock, NULL, MUTEX_DEFAULT, NULL);
-	mutex_init(&cachefs_async_lock, NULL, MUTEX_DEFAULT, NULL);
-#ifdef CFSRLDEBUG
-	mutex_init(&cachefs_rl_debug_mutex, NULL, MUTEX_DEFAULT, NULL);
-#endif /* CFSRLDEBUG */
-
-	/*
-	 * set up kmem_cache entities
-	 */
-
-	cachefs_cnode_cache = kmem_cache_create("cachefs_cnode_cache",
-	    sizeof (struct cnode), 0, NULL, NULL, NULL, NULL, NULL, 0);
-	cachefs_req_cache = kmem_cache_create("cachefs_async_request",
-	    sizeof (struct cachefs_req), 0,
-	    cachefs_req_create, cachefs_req_destroy, NULL, NULL, NULL, 0);
-	cachefs_fscache_cache = kmem_cache_create("cachefs_fscache",
-	    sizeof (fscache_t), 0, NULL, NULL, NULL, NULL, NULL, 0);
-	cachefs_filegrp_cache = kmem_cache_create("cachefs_filegrp",
-	    sizeof (filegrp_t), 0,
-	    filegrp_cache_create, filegrp_cache_destroy, NULL, NULL, NULL, 0);
-	cachefs_cache_kmcache = kmem_cache_create("cachefs_cache_t",
-	    sizeof (cachefscache_t), 0, NULL, NULL, NULL, NULL, NULL, 0);
-
-	/*
-	 * set up the cachefs.0.key kstat
-	 */
-
-	cachefs_kstat_key = NULL;
-	cachefs_kstat_key_n = 0;
-	ksp = kstat_create("cachefs", 0, "key", "misc", KSTAT_TYPE_RAW, 1,
-	    KSTAT_FLAG_VIRTUAL | KSTAT_FLAG_VAR_SIZE);
-	if (ksp != NULL) {
-		ksp->ks_data = &cachefs_kstat_key;
-		ksp->ks_update = cachefs_kstat_key_update;
-		ksp->ks_snapshot = cachefs_kstat_key_snapshot;
-		ksp->ks_lock = &cachefs_kstat_key_lock;
-		kstat_install(ksp);
-	}
-
-	/*
-	 * Assign unique major number for all nfs mounts
-	 */
-
-	if ((cachefs_major = getudev()) == -1) {
-		cmn_err(CE_WARN,
-			"cachefs: init: can't get unique device number");
-		cachefs_major = 0;
-	}
-	cachefs_up = B_TRUE;
-#ifdef CFSRLDEBUG
-	cachefs_dbvalid = time;
-#endif /* CFSRLDEBUG */
-
-	return (0);
-}
-
-/*
- * Cache clean up routine. This routine is called if mod_install() failed
- * and we have to clean up because the module could not be installed,
- * or by _fini() when we're unloading the module.
- */
-static void
-cachefs_fini()
-{
-	extern int cachefsfstyp;
-	extern struct vnodeops *cachefs_vnodeops;
-
-	if (cachefs_up == B_FALSE) {
-		/*
-		 * cachefs_init() was not called on _init(),
-		 * nothing to deallocate.
-		 */
-		return;
-	}
-
-	/*
-	 * Clean up cachefs.0.key kstat.
-	 * Currently, you can only do a
-	 * modunload if cachefs_unloadable is nonzero, and that's
-	 * pretty much just for debugging.  however, if there ever
-	 * comes a day when cachefs is more freely unloadable
-	 * (e.g. the modunload daemon can do it normally), then we'll
-	 * have to make changes in the stats_ API.  this is because a
-	 * stats_cookie_t holds the id # derived from here, and it
-	 * will all go away at modunload time.  thus, the API will
-	 * need to somehow be more robust than is currently necessary.
-	 */
-	kstat_delete_byname("cachefs", 0, "key");
-
-	if (cachefs_kstat_key != NULL) {
-		cachefs_kstat_key_t *key;
-		int i;
-
-		for (i = 0; i < cachefs_kstat_key_n; i++) {
-			key = cachefs_kstat_key + i;
-
-			cachefs_kmem_free((void *)(uintptr_t)key->ks_mountpoint,
-			    strlen((char *)(uintptr_t)key->ks_mountpoint) + 1);
-			cachefs_kmem_free((void *)(uintptr_t)key->ks_backfs,
-			    strlen((char *)(uintptr_t)key->ks_backfs) + 1);
-			cachefs_kmem_free((void *)(uintptr_t)key->ks_cachedir,
-			    strlen((char *)(uintptr_t)key->ks_cachedir) + 1);
-			cachefs_kmem_free((void *)(uintptr_t)key->ks_cacheid,
-			    strlen((char *)(uintptr_t)key->ks_cacheid) + 1);
-		}
-
-		cachefs_kmem_free(cachefs_kstat_key,
-		    cachefs_kstat_key_n * sizeof (*cachefs_kstat_key));
-	}
-
-	/*
-	 * Clean up kmem_cache entities
-	 */
-	kmem_cache_destroy(cachefs_cache_kmcache);
-	kmem_cache_destroy(cachefs_filegrp_cache);
-	kmem_cache_destroy(cachefs_fscache_cache);
-	kmem_cache_destroy(cachefs_req_cache);
-	kmem_cache_destroy(cachefs_cnode_cache);
-#ifdef CFSRLDEBUG
-	if (cachefs_rl_debug_cache != NULL)
-		kmem_cache_destroy(cachefs_rl_debug_cache);
-#endif /* CFSRLDEBUG */
-
-	/*
-	 * Clean up the operations structures
-	 */
-	(void) vfs_freevfsops_by_type(cachefsfstyp);
-	vn_freevnodeops(cachefs_vnodeops);
-
-	/*
-	 * Destroy mutexes
-	 */
-#ifdef CFSRLDEBUG
-	mutex_destroy(&cachefs_rl_debug_mutex);
-#endif /* CFSRLDEBUG */
-	mutex_destroy(&cachefs_async_lock);
-	mutex_destroy(&cachefs_minor_lock);
-	mutex_destroy(&cachefs_rename_lock);
-	mutex_destroy(&cachefs_kmem_lock);
-	mutex_destroy(&cachefs_kstat_key_lock);
-	mutex_destroy(&cachefs_newnum_lock);
-	mutex_destroy(&cachefs_cachelock);
-}
