ath3k_fw.c revision 301537 
1/*-
2 * Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer,
10 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 *    redistribution must be conditioned upon including a substantially
14 *    similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 *
29 * $FreeBSD: head/usr.sbin/bluetooth/ath3kfw/ath3k_fw.c 301537 2016-06-07 04:22:18Z adrian $
30 */
31
32#include <stdio.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <errno.h>
36#include <string.h>
37#include <err.h>
38#include <fcntl.h>
39#include <sys/types.h>
40#include <sys/stat.h>
41
42#include "ath3k_fw.h"
43#include "ath3k_dbg.h"
44
45int
46ath3k_fw_read(struct ath3k_firmware *fw, const char *fwname)
47{
48	int fd;
49	struct stat sb;
50	unsigned char *buf;
51	ssize_t r;
52	int i;
53
54	fd = open(fwname, O_RDONLY);
55	if (fd < 0) {
56		warn("%s: open: %s", __func__, fwname);
57		return (0);
58	}
59
60	if (fstat(fd, &sb) != 0) {
61		warn("%s: stat: %s", __func__, fwname);
62		close(fd);
63		return (0);
64	}
65
66	buf = calloc(1, sb.st_size);
67	if (buf == NULL) {
68		warn("%s: calloc", __func__);
69		close(fd);
70		return (0);
71	}
72
73	i = 0;
74	/* XXX handle partial reads */
75	r = read(fd, buf, sb.st_size);
76	if (r < 0) {
77		warn("%s: read", __func__);
78		free(buf);
79		close(fd);
80		return (0);
81	}
82
83	if (r != sb.st_size) {
84		fprintf(stderr, "%s: read len %d != file size %d\n",
85		    __func__,
86		    (int) r,
87		    (int) sb.st_size);
88		free(buf);
89		close(fd);
90		return (0);
91	}
92
93	/* We have everything, so! */
94
95	bzero(fw, sizeof(*fw));
96
97	fw->fwname = strdup(fwname);
98	fw->len = sb.st_size;
99	fw->size = sb.st_size;
100	fw->buf = buf;
101
102	close(fd);
103	return (1);
104}
105
106void
107ath3k_fw_free(struct ath3k_firmware *fw)
108{
109	if (fw->fwname)
110		free(fw->fwname);
111	if (fw->buf)
112		free(fw->buf);
113	bzero(fw, sizeof(*fw));
114}
115