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
rk_dumpdata(const char * filename,const void * buf,size_t size)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
rk_undumpdata(const char * filename,void ** buf,size_t * size)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