1 /* $NetBSD: dumpdata.c,v 1.1.1.2 2014/04/24 12:45:52 pettai Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <config.h> 37 38 #include <krb5/roken.h> 39 40 /* 41 * Write datablob to a filename, don't care about errors. 42 */ 43 44 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL 45 rk_dumpdata (const char *filename, const void *buf, size_t size) 46 { 47 int fd; 48 49 fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0640); 50 if (fd < 0) 51 return; 52 net_write(fd, buf, size); 53 close(fd); 54 } 55 56 /* 57 * Read all data from a filename, care about errors. 58 */ 59 60 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 61 rk_undumpdata(const char *filename, void **buf, size_t *size) 62 { 63 struct stat sb; 64 int fd, ret; 65 ssize_t sret; 66 67 *buf = NULL; 68 69 fd = open(filename, O_RDONLY, 0); 70 if (fd < 0) 71 return errno; 72 if (fstat(fd, &sb) != 0){ 73 ret = errno; 74 goto out; 75 } 76 *buf = malloc(sb.st_size); 77 if (*buf == NULL) { 78 ret = ENOMEM; 79 goto out; 80 } 81 *size = sb.st_size; 82 83 sret = net_read(fd, *buf, *size); 84 if (sret < 0) 85 ret = errno; 86 else if (sret != (ssize_t)*size) { 87 ret = EINVAL; 88 free(*buf); 89 *buf = NULL; 90 } else 91 ret = 0; 92 93 out: 94 close(fd); 95 return ret; 96 } 97