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
42ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
43rk_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
58ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
59rk_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