1 /* 2 * Copyright (c) 2005 Kungliga Tekniska Högskolan 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 <config.h> 35 36 #include "roken.h" 37 38 /* 39 * Write datablob to a filename, don't care about errors. 40 */ 41 42 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL 43 rk_dumpdata (const char *filename, const void *buf, size_t size) 44 { 45 int fd; 46 47 fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0640); 48 if (fd < 0) 49 return; 50 net_write(fd, buf, size); 51 close(fd); 52 } 53 54 /* 55 * Read all data from a filename, care about errors. 56 */ 57 58 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 59 rk_undumpdata(const char *filename, void **buf, size_t *size) 60 { 61 struct stat sb; 62 int fd, ret; 63 ssize_t sret; 64 65 *buf = NULL; 66 67 fd = open(filename, O_RDONLY, 0); 68 if (fd < 0) 69 return errno; 70 if (fstat(fd, &sb) != 0){ 71 ret = errno; 72 goto out; 73 } 74 *buf = malloc(sb.st_size); 75 if (*buf == NULL) { 76 ret = ENOMEM; 77 goto out; 78 } 79 *size = sb.st_size; 80 81 sret = net_read(fd, *buf, *size); 82 if (sret < 0) 83 ret = errno; 84 else if (sret != (ssize_t)*size) { 85 ret = EINVAL; 86 free(*buf); 87 *buf = NULL; 88 } else 89 ret = 0; 90 91 out: 92 close(fd); 93 return ret; 94 } 95