1 /* 2 * Copyright (c) 1997 - 2002 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 #include "store-int.h" 36 37 RCSID("$Id: store_fd.c,v 1.10 2002/04/18 14:00:39 joda Exp $"); 38 39 typedef struct fd_storage{ 40 int fd; 41 }fd_storage; 42 43 #define FD(S) (((fd_storage*)(S)->data)->fd) 44 45 static ssize_t 46 fd_fetch(krb5_storage *sp, void *data, size_t size) 47 { 48 return net_read(FD(sp), data, size); 49 } 50 51 static ssize_t 52 fd_store(krb5_storage *sp, const void *data, size_t size) 53 { 54 return net_write(FD(sp), data, size); 55 } 56 57 static off_t 58 fd_seek(krb5_storage *sp, off_t offset, int whence) 59 { 60 return lseek(FD(sp), offset, whence); 61 } 62 63 krb5_storage * 64 krb5_storage_from_fd(int fd) 65 { 66 krb5_storage *sp = malloc(sizeof(krb5_storage)); 67 68 if (sp == NULL) 69 return NULL; 70 71 sp->data = malloc(sizeof(fd_storage)); 72 if (sp->data == NULL) { 73 free(sp); 74 return NULL; 75 } 76 sp->flags = 0; 77 sp->eof_code = HEIM_ERR_EOF; 78 FD(sp) = fd; 79 sp->fetch = fd_fetch; 80 sp->store = fd_store; 81 sp->seek = fd_seek; 82 sp->free = NULL; 83 return sp; 84 } 85