1 /* $NetBSD: misc.c,v 1.2 2010/02/28 14:45:47 haad Exp $ */ 2 3 /*- 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58 #include <sys/cdefs.h> 59 /* __FBSDID("$FreeBSD: src/sys/compat/opensolaris/kern/opensolaris_misc.c,v 1.2 2007/04/23 00:52:06 pjd Exp $"); */ 60 61 #include <sys/mount.h> 62 #include <sys/param.h> 63 #include <sys/kernel.h> 64 #include <sys/systm.h> 65 #include <sys/misc.h> 66 #include <sys/sunddi.h> 67 #include <sys/utsname.h> 68 #include <sys/vnode.h> 69 #include <sys/mount.h> 70 #include <sys/pool.h> 71 #include <sys/buf.h> 72 73 char hw_serial[11] = "0"; 74 75 struct utsname utsname = { 76 .nodename = "XXXNETBSD" 77 }; 78 79 int 80 vn_is_readonly(vnode_t *vp) 81 { 82 83 return (vp->v_mount->mnt_flag & MNT_RDONLY); 84 } 85 86 kthread_t * 87 thread_create(void * stk, size_t stksize, void (*proc)(), void *arg, 88 size_t len, proc_t *pp, int state, pri_t pri) 89 { 90 int error; 91 lwp_t *thr; 92 93 ASSERT(stk == NULL && stksize == 0 && len == 0); 94 ASSERT(state == TS_RUN); 95 96 error = kthread_create(pri, KTHREAD_MPSAFE, NULL, 97 proc, arg, &thr, "zfs"); 98 KASSERT(error == 0); 99 return thr; 100 } 101 102 void 103 thread_exit(void) 104 { 105 106 kthread_exit(0); 107 } 108 109 void 110 thread_join(uint64_t kid) 111 { 112 113 return; 114 } 115 116 int 117 newproc(void (*pc)(), caddr_t arg, id_t cid, int pri, struct contract **ct, 118 pid_t pid) 119 { 120 int error; 121 122 ASSERT(cid == PRI_NONE); 123 124 error = kthread_create(pri, KTHREAD_MPSAFE, NULL, 125 pc, arg, NULL, "zfs_proc"); 126 KASSERT(error == 0); 127 128 return 0; 129 } 130 131 void 132 kmem_reap(void) 133 { 134 int bufcnt; 135 uint64_t where; 136 struct pool *pp; 137 138 /* 139 * start draining pool resources now that we're not 140 * holding any locks. 141 */ 142 pool_drain_start(&pp, &where); 143 144 bufcnt = uvmexp.freetarg - uvmexp.free; 145 if (bufcnt < 0) 146 bufcnt = 0; 147 /* 148 * kill unused metadata buffers. 149 */ 150 mutex_enter(&bufcache_lock); 151 buf_drain(bufcnt << PAGE_SHIFT); 152 mutex_exit(&bufcache_lock); 153 154 /* 155 * complete draining the pools. 156 */ 157 pool_drain_end(pp, where); 158 // printf("XXXNETBSD kmem_reap called, write me\n"); 159 } 160 161 /* 162 * Zero out the structure, set the size of the requested/returned bitmaps, 163 * set AT_XVATTR in the embedded vattr_t's va_mask, and set up the pointer 164 * to the returned attributes array. 165 */ 166 void 167 xva_init(xvattr_t *xvap) 168 { 169 bzero(xvap, sizeof (xvattr_t)); 170 xvap->xva_mapsize = XVA_MAPSIZE; 171 xvap->xva_magic = XVA_MAGIC; 172 xvap->xva_vattr.va_mask = AT_XVATTR; 173 xvap->xva_rtnattrmapp = &(xvap->xva_rtnattrmap)[0]; 174 } 175 176 177 /* 178 * If AT_XVATTR is set, returns a pointer to the embedded xoptattr_t 179 * structure. Otherwise, returns NULL. 180 */ 181 xoptattr_t * 182 xva_getxoptattr(xvattr_t *xvap) 183 { 184 xoptattr_t *xoap = NULL; 185 if (xvap->xva_vattr.va_mask & AT_XVATTR) 186 xoap = &xvap->xva_xoptattrs; 187 return (xoap); 188 } 189