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
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33 #include <errno.h>
34 #include <string.h>
35 #include <err.h>
36 #include <fcntl.h>
37 #include <sys/types.h>
38 #include <sys/stat.h>
39
40 #include "ath3k_fw.h"
41 #include "ath3k_dbg.h"
42
43 int
ath3k_fw_read(struct ath3k_firmware * fw,const char * fwname)44 ath3k_fw_read(struct ath3k_firmware *fw, const char *fwname)
45 {
46 int fd;
47 struct stat sb;
48 unsigned char *buf;
49 ssize_t r;
50
51 fd = open(fwname, O_RDONLY);
52 if (fd < 0) {
53 warn("%s: open: %s", __func__, fwname);
54 return (0);
55 }
56
57 if (fstat(fd, &sb) != 0) {
58 warn("%s: stat: %s", __func__, fwname);
59 close(fd);
60 return (0);
61 }
62
63 buf = calloc(1, sb.st_size);
64 if (buf == NULL) {
65 warn("%s: calloc", __func__);
66 close(fd);
67 return (0);
68 }
69
70 /* XXX handle partial reads */
71 r = read(fd, buf, sb.st_size);
72 if (r < 0) {
73 warn("%s: read", __func__);
74 free(buf);
75 close(fd);
76 return (0);
77 }
78
79 if (r != sb.st_size) {
80 fprintf(stderr, "%s: read len %d != file size %d\n",
81 __func__,
82 (int) r,
83 (int) sb.st_size);
84 free(buf);
85 close(fd);
86 return (0);
87 }
88
89 /* We have everything, so! */
90
91 bzero(fw, sizeof(*fw));
92
93 fw->fwname = strdup(fwname);
94 fw->len = sb.st_size;
95 fw->size = sb.st_size;
96 fw->buf = buf;
97
98 close(fd);
99 return (1);
100 }
101
102 void
ath3k_fw_free(struct ath3k_firmware * fw)103 ath3k_fw_free(struct ath3k_firmware *fw)
104 {
105 if (fw->fwname)
106 free(fw->fwname);
107 if (fw->buf)
108 free(fw->buf);
109 bzero(fw, sizeof(*fw));
110 }
111