1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2023 Oxide Computer Company
14 */
15
16 /*
17 * A private utility to dump the raw spd information nvlist.
18 */
19
20 #include <err.h>
21 #include <libnvpair.h>
22 #include <sys/types.h>
23 #include <sys/stat.h>
24 #include <fcntl.h>
25 #include <unistd.h>
26 #include <libjedec.h>
27
28 int
main(int argc,const char * argv[])29 main(int argc, const char *argv[])
30 {
31 int fd;
32 struct stat st;
33 uint8_t buf[4096];
34 ssize_t ret;
35 spd_error_t serr;
36
37 if (argc != 2) {
38 errx(EXIT_FAILURE, "spd: file");
39 }
40
41 fd = open(argv[1], O_RDONLY);
42 if (fd < 0) {
43 err(EXIT_FAILURE, "failed to open %s", argv[1]);
44 }
45
46 if (fstat(fd, &st) != 0) {
47 err(EXIT_FAILURE, "failed to get stat info for %s", argv[1]);
48 }
49
50 if (st.st_size > sizeof (buf)) {
51 errx(EXIT_FAILURE, "spd data exceeds internal 0x%zx internal "
52 "buffer: 0x%lx", sizeof (buf), st.st_size);
53 }
54
55 ret = read(fd, buf, st.st_size);
56 if (ret < 0) {
57 err(EXIT_FAILURE, "failed to read %s", argv[1]);
58 } else if (ret != st.st_size) {
59 errx(EXIT_FAILURE, "failed to read %s in one go: got %ld "
60 "bytes, expected %ld", argv[1], ret, st.st_size);
61 }
62
63 nvlist_t *nvl = libjedec_spd(buf, st.st_size, &serr);
64 if (nvl == NULL) {
65 errx(EXIT_FAILURE, "failed to parse spd info: 0x%x\n", serr);
66 }
67
68 nvlist_print(stdout, nvl);
69 return (EXIT_SUCCESS);
70 }
71