1 /* 2 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * 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 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "krb5_locl.h" 35 36 RCSID("$Id: store_fd.c,v 1.9 2001/06/24 05:39:51 assar Exp $"); 37 38 typedef struct fd_storage{ 39 int fd; 40 }fd_storage; 41 42 #define FD(S) (((fd_storage*)(S)->data)->fd) 43 44 static ssize_t 45 fd_fetch(krb5_storage *sp, void *data, size_t size) 46 { 47 return net_read(FD(sp), data, size); 48 } 49 50 static ssize_t 51 fd_store(krb5_storage *sp, const void *data, size_t size) 52 { 53 return net_write(FD(sp), data, size); 54 } 55 56 static off_t 57 fd_seek(krb5_storage *sp, off_t offset, int whence) 58 { 59 return lseek(FD(sp), offset, whence); 60 } 61 62 krb5_storage * 63 krb5_storage_from_fd(int fd) 64 { 65 krb5_storage *sp = malloc(sizeof(krb5_storage)); 66 67 if (sp == NULL) 68 return NULL; 69 70 sp->data = malloc(sizeof(fd_storage)); 71 if (sp->data == NULL) { 72 free(sp); 73 return NULL; 74 } 75 sp->flags = 0; 76 FD(sp) = fd; 77 sp->fetch = fd_fetch; 78 sp->store = fd_store; 79 sp->seek = fd_seek; 80 sp->free = NULL; 81 return sp; 82 } 83