1 /* $NetBSD: subr.c,v 1.2 2010/08/26 13:29:01 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Emmanuel Dreyfus. 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <err.h> 31 #include <errno.h> 32 #include <sysexits.h> 33 #include <syslog.h> 34 #include <puffs.h> 35 #include <paths.h> 36 37 #include "perfuse_priv.h" 38 39 struct puffs_node * 40 perfuse_new_pn(pu, parent) 41 struct puffs_usermount *pu; 42 struct puffs_node *parent; 43 { 44 struct puffs_node *pn; 45 struct perfuse_node_data *pnd; 46 47 if ((pnd = malloc(sizeof(*pnd))) == NULL) 48 DERR(EX_OSERR, "malloc failed"); 49 50 if ((pn = puffs_pn_new(pu, pnd)) == NULL) 51 DERR(EX_SOFTWARE, "puffs_pn_new failed"); 52 53 (void)memset(pnd, 0, sizeof(*pnd)); 54 TAILQ_INIT(&pnd->pnd_fh); 55 pnd->pnd_ino = PERFUSE_UNKNOWN_INO; 56 pnd->pnd_nlookup = 1; 57 pnd->pnd_parent = parent; 58 TAILQ_INIT(&pnd->pnd_pcq); 59 60 if (parent != NULL) 61 PERFUSE_NODE_DATA(parent)->pnd_childcount++; 62 63 return pn; 64 } 65 66 void 67 perfuse_destroy_pn(pn) 68 struct puffs_node *pn; 69 { 70 struct perfuse_node_data *pnd; 71 72 if ((pnd = puffs_pn_getpriv(pn)) != NULL) { 73 if (pnd->pnd_parent != NULL) 74 PERFUSE_NODE_DATA(pnd->pnd_parent)->pnd_childcount--; 75 76 if (pnd->pnd_dirent != NULL) 77 free(pnd->pnd_dirent); 78 79 if (pnd->pnd_all_fd != NULL) 80 free(pnd->pnd_all_fd); 81 #ifdef PERFUSE_DEBUG 82 if (!TAILQ_EMPTY(&pnd->pnd_fh)) 83 DERRX(EX_SOFTWARE, "%s: non empty pnd_fh", __func__); 84 85 if (!TAILQ_EMPTY(&pnd->pnd_pcq)) 86 DERRX(EX_SOFTWARE, "%s: non empty pnd_pcq", __func__); 87 #endif /* PERFUSE_DEBUG */ 88 89 free(pnd); 90 } 91 92 puffs_pn_remove(pn); 93 94 return; 95 } 96 97 98 void 99 perfuse_new_fh(opc, fh) 100 puffs_cookie_t opc; 101 uint64_t fh; 102 { 103 struct perfuse_node_data *pnd; 104 struct perfuse_file_handle *pfh; 105 106 if (fh == FUSE_UNKNOWN_FH) 107 return; 108 109 pnd = PERFUSE_NODE_DATA(opc); 110 pnd->pnd_flags |= PND_OPEN; 111 112 if ((pfh = malloc(sizeof(*pfh))) == NULL) 113 DERR(EX_OSERR, "malloc failed"); 114 115 pfh->pfh_fh = fh; 116 117 TAILQ_INSERT_TAIL(&pnd->pnd_fh, pfh, pfh_entries); 118 119 return; 120 } 121 122 void 123 perfuse_destroy_fh(opc, fh) 124 puffs_cookie_t opc; 125 uint64_t fh; 126 { 127 struct perfuse_node_data *pnd; 128 struct perfuse_file_handle *pfh; 129 130 pnd = PERFUSE_NODE_DATA(opc); 131 132 TAILQ_FOREACH(pfh, &pnd->pnd_fh, pfh_entries) { 133 if (pfh->pfh_fh == fh) { 134 TAILQ_REMOVE(&pnd->pnd_fh, pfh, pfh_entries); 135 free(pfh); 136 break; 137 } 138 } 139 140 if (TAILQ_EMPTY(&pnd->pnd_fh)) 141 pnd->pnd_flags &= ~PND_OPEN; 142 143 if (pfh == NULL) 144 DERRX(EX_SOFTWARE, "%s: unexistant fh = %lld (double close?)", 145 __func__, fh); 146 147 return; 148 } 149 150 uint64_t 151 perfuse_get_fh(opc) 152 puffs_cookie_t opc; 153 { 154 struct perfuse_node_data *pnd; 155 struct perfuse_file_handle *pfh; 156 uint64_t fh = FUSE_UNKNOWN_FH; 157 158 pnd = PERFUSE_NODE_DATA(opc); 159 160 if ((pfh = TAILQ_FIRST(&pnd->pnd_fh)) != NULL) 161 fh = pfh->pfh_fh;; 162 163 return fh; 164 } 165 166