1 /* $NetBSD: pnode.c,v 1.13 2012/08/16 09:25:43 manu 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 1.13 2012/08/16 09:25:43 manu 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 *
puffs_pn_new(struct puffs_usermount * pu,void * privdata)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 pu->pu_flags |= PUFFS_FLAG_PNCOOKIE;
64
65 return pn;
66 }
67
68 void
puffs_pn_remove(struct puffs_node * pn)69 puffs_pn_remove(struct puffs_node *pn)
70 {
71
72 LIST_REMOVE(pn, pn_entries);
73 pn->pn_flags |= PUFFS_NODE_REMOVED;
74 }
75
76 void
puffs_pn_put(struct puffs_node * pn)77 puffs_pn_put(struct puffs_node *pn)
78 {
79 struct puffs_usermount *pu = pn->pn_mnt;
80
81 pu->pu_pathfree(pu, &pn->pn_po);
82 if ((pn->pn_flags & PUFFS_NODE_REMOVED) == 0)
83 LIST_REMOVE(pn, pn_entries);
84 free(pn);
85 }
86
87 /* walk list, rv can be used either to halt or to return a value */
88 void *
puffs_pn_nodewalk(struct puffs_usermount * pu,puffs_nodewalk_fn fn,void * arg)89 puffs_pn_nodewalk(struct puffs_usermount *pu, puffs_nodewalk_fn fn, void *arg)
90 {
91 struct puffs_node *pn_cur, *pn_next;
92 void *rv;
93
94 pn_cur = LIST_FIRST(&pu->pu_pnodelst);
95 while (pn_cur) {
96 pn_next = LIST_NEXT(pn_cur, pn_entries);
97 rv = fn(pu, pn_cur, arg);
98 if (rv)
99 return rv;
100 pn_cur = pn_next;
101 }
102
103 return NULL;
104 }
105
106 struct vattr *
puffs_pn_getvap(struct puffs_node * pn)107 puffs_pn_getvap(struct puffs_node *pn)
108 {
109
110 return &pn->pn_va;
111 }
112
113 void *
puffs_pn_getpriv(struct puffs_node * pn)114 puffs_pn_getpriv(struct puffs_node *pn)
115 {
116
117 return pn->pn_data;
118 }
119
120 void
puffs_pn_setpriv(struct puffs_node * pn,void * priv)121 puffs_pn_setpriv(struct puffs_node *pn, void *priv)
122 {
123
124 pn->pn_data = priv;
125 }
126
127 struct puffs_pathobj *
puffs_pn_getpo(struct puffs_node * pn)128 puffs_pn_getpo(struct puffs_node *pn)
129 {
130
131 return &pn->pn_po;
132 }
133
134 struct puffs_usermount *
puffs_pn_getmnt(struct puffs_node * pn)135 puffs_pn_getmnt(struct puffs_node *pn)
136 {
137
138 return pn->pn_mnt;
139 }
140
141 /* convenience / shortcut */
142 void *
puffs_pn_getmntspecific(struct puffs_node * pn)143 puffs_pn_getmntspecific(struct puffs_node *pn)
144 {
145
146 return pn->pn_mnt->pu_privdata;
147 }
148
149 /*
150 * newnode parameters
151 */
152 void
puffs_newinfo_setcookie(struct puffs_newinfo * pni,puffs_cookie_t cookie)153 puffs_newinfo_setcookie(struct puffs_newinfo *pni, puffs_cookie_t cookie)
154 {
155
156 *pni->pni_cookie = cookie;
157 }
158
159 void
puffs_newinfo_setvtype(struct puffs_newinfo * pni,enum vtype vt)160 puffs_newinfo_setvtype(struct puffs_newinfo *pni, enum vtype vt)
161 {
162
163 *pni->pni_vtype = vt;
164 }
165
166 void
puffs_newinfo_setsize(struct puffs_newinfo * pni,voff_t size)167 puffs_newinfo_setsize(struct puffs_newinfo *pni, voff_t size)
168 {
169
170 *pni->pni_size = size;
171 }
172
173 void
puffs_newinfo_setrdev(struct puffs_newinfo * pni,dev_t rdev)174 puffs_newinfo_setrdev(struct puffs_newinfo *pni, dev_t rdev)
175 {
176
177 *pni->pni_rdev = rdev;
178 }
179
180 void
puffs_newinfo_setva(struct puffs_newinfo * pni,struct vattr * va)181 puffs_newinfo_setva(struct puffs_newinfo *pni, struct vattr *va)
182 {
183
184 (void)memcpy(pni->pni_va, va, sizeof(struct vattr));
185 }
186
187 void
puffs_newinfo_setvattl(struct puffs_newinfo * pni,struct timespec * va_ttl)188 puffs_newinfo_setvattl(struct puffs_newinfo *pni, struct timespec *va_ttl)
189 {
190
191 pni->pni_va_ttl->tv_sec = va_ttl->tv_sec;
192 pni->pni_va_ttl->tv_nsec = va_ttl->tv_nsec;
193 }
194
195 void
puffs_newinfo_setcnttl(struct puffs_newinfo * pni,struct timespec * cn_ttl)196 puffs_newinfo_setcnttl(struct puffs_newinfo *pni, struct timespec *cn_ttl)
197 {
198
199 pni->pni_cn_ttl->tv_sec = cn_ttl->tv_sec;
200 pni->pni_cn_ttl->tv_nsec = cn_ttl->tv_nsec;
201 }
202
203