1 /* $NetBSD: pnode.c,v 1.10 2008/08/12 19:44:39 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 #if !defined(lint) 30 __RCSID("$NetBSD: pnode.c,v 1.10 2008/08/12 19:44:39 pooka Exp $"); 31 #endif /* !lint */ 32 33 #include <sys/types.h> 34 35 #include <assert.h> 36 #include <puffs.h> 37 #include <stdlib.h> 38 #include <stdio.h> 39 #include <string.h> 40 41 #include "puffs_priv.h" 42 43 /* 44 * Well, you're probably wondering why this isn't optimized. 45 * The reason is simple: my available time is not optimized for 46 * size ... so please be patient ;) 47 */ 48 struct puffs_node * 49 puffs_pn_new(struct puffs_usermount *pu, void *privdata) 50 { 51 struct puffs_node *pn; 52 53 pn = calloc(1, sizeof(struct puffs_node)); 54 if (pn == NULL) 55 return NULL; 56 57 pn->pn_data = privdata; 58 pn->pn_mnt = pu; 59 puffs_vattr_null(&pn->pn_va); 60 61 LIST_INSERT_HEAD(&pu->pu_pnodelst, pn, pn_entries); 62 63 return pn; 64 } 65 66 void 67 puffs_pn_remove(struct puffs_node *pn) 68 { 69 70 LIST_REMOVE(pn, pn_entries); 71 pn->pn_flags |= PUFFS_NODE_REMOVED; 72 } 73 74 void 75 puffs_pn_put(struct puffs_node *pn) 76 { 77 struct puffs_usermount *pu = pn->pn_mnt; 78 79 pu->pu_pathfree(pu, &pn->pn_po); 80 if ((pn->pn_flags & PUFFS_NODE_REMOVED) == 0) 81 LIST_REMOVE(pn, pn_entries); 82 free(pn); 83 } 84 85 /* walk list, rv can be used either to halt or to return a value */ 86 void * 87 puffs_pn_nodewalk(struct puffs_usermount *pu, puffs_nodewalk_fn fn, void *arg) 88 { 89 struct puffs_node *pn_cur, *pn_next; 90 void *rv; 91 92 pn_cur = LIST_FIRST(&pu->pu_pnodelst); 93 while (pn_cur) { 94 pn_next = LIST_NEXT(pn_cur, pn_entries); 95 rv = fn(pu, pn_cur, arg); 96 if (rv) 97 return rv; 98 pn_cur = pn_next; 99 } 100 101 return NULL; 102 } 103 104 struct vattr * 105 puffs_pn_getvap(struct puffs_node *pn) 106 { 107 108 return &pn->pn_va; 109 } 110 111 void * 112 puffs_pn_getpriv(struct puffs_node *pn) 113 { 114 115 return pn->pn_data; 116 } 117 118 void 119 puffs_pn_setpriv(struct puffs_node *pn, void *priv) 120 { 121 122 pn->pn_data = priv; 123 } 124 125 struct puffs_pathobj * 126 puffs_pn_getpo(struct puffs_node *pn) 127 { 128 129 return &pn->pn_po; 130 } 131 132 struct puffs_usermount * 133 puffs_pn_getmnt(struct puffs_node *pn) 134 { 135 136 return pn->pn_mnt; 137 } 138 139 /* convenience / shortcut */ 140 void * 141 puffs_pn_getmntspecific(struct puffs_node *pn) 142 { 143 144 return pn->pn_mnt->pu_privdata; 145 } 146 147 /* 148 * newnode parameters 149 */ 150 void 151 puffs_newinfo_setcookie(struct puffs_newinfo *pni, puffs_cookie_t cookie) 152 { 153 154 *pni->pni_cookie = cookie; 155 } 156 157 void 158 puffs_newinfo_setvtype(struct puffs_newinfo *pni, enum vtype vt) 159 { 160 161 *pni->pni_vtype = vt; 162 } 163 164 void 165 puffs_newinfo_setsize(struct puffs_newinfo *pni, voff_t size) 166 { 167 168 *pni->pni_size = size; 169 } 170 171 void 172 puffs_newinfo_setrdev(struct puffs_newinfo *pni, dev_t rdev) 173 { 174 175 *pni->pni_rdev = rdev; 176 } 177