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      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 *
     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
     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
     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 *
     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 *
    107 puffs_pn_getvap(struct puffs_node *pn)
    108 {
    109 
    110 	return &pn->pn_va;
    111 }
    112 
    113 void *
    114 puffs_pn_getpriv(struct puffs_node *pn)
    115 {
    116 
    117 	return pn->pn_data;
    118 }
    119 
    120 void
    121 puffs_pn_setpriv(struct puffs_node *pn, void *priv)
    122 {
    123 
    124 	pn->pn_data = priv;
    125 }
    126 
    127 struct puffs_pathobj *
    128 puffs_pn_getpo(struct puffs_node *pn)
    129 {
    130 
    131 	return &pn->pn_po;
    132 }
    133 
    134 struct puffs_usermount *
    135 puffs_pn_getmnt(struct puffs_node *pn)
    136 {
    137 
    138 	return pn->pn_mnt;
    139 }
    140 
    141 /* convenience / shortcut */
    142 void *
    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
    153 puffs_newinfo_setcookie(struct puffs_newinfo *pni, puffs_cookie_t cookie)
    154 {
    155 
    156 	*pni->pni_cookie = cookie;
    157 }
    158 
    159 void
    160 puffs_newinfo_setvtype(struct puffs_newinfo *pni, enum vtype vt)
    161 {
    162 
    163 	*pni->pni_vtype = vt;
    164 }
    165 
    166 void
    167 puffs_newinfo_setsize(struct puffs_newinfo *pni, voff_t size)
    168 {
    169 
    170 	*pni->pni_size = size;
    171 }
    172 
    173 void
    174 puffs_newinfo_setrdev(struct puffs_newinfo *pni, dev_t rdev)
    175 {
    176 
    177 	*pni->pni_rdev = rdev;
    178 }
    179 
    180 void
    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
    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
    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