1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* SPDX-License-Identifier: BSD-3-Clause */
#include <getopt.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <common.h>
#include <commonlib/bsd/elog.h>
#include <flashrom.h>
#include "eventlog.h"
enum elogtool_return {
ELOGTOOL_EXIT_SUCCESS = 0,
ELOGTOOL_EXIT_BAD_ARGS,
ELOGTOOL_EXIT_BAD_INPUT_PATH,
ELOGTOOL_EXIT_NOT_ENOUGH_MEMORY,
ELOGTOOL_EXIT_INVALID_ELOG_FORMAT,
};
static struct option long_options[] = {
{"file", required_argument, 0, 'f'},
{"help", no_argument, 0, 'h'},
{NULL, 0, 0, 0},
};
static void usage(char *invoked_as)
{
fprintf(stderr, "elogtool: list elog events\n\n"
"USAGE:\n"
"\t%s COMMAND [-f <filename>]\n\n"
"where, COMMAND is:\n"
" list = lists all the event logs in human readable format\n\n"
"ARGS\n"
"-f, --file <filename> Input file that holds event log partition.\n"
" If empty it will try to read from the RW_ELOG ROM region\n"
"-h, --help Print this help\n",
invoked_as);
}
// If filename is empty, read RW_ELOG from flashrom. Otherwise read the RW_ELOG from a file.
// Buffer must be freed by caller.
static int elog_read(const char *filename, struct buffer *buffer)
{
if (filename == NULL) {
uint8_t *buf;
uint32_t buf_size;
if (flashrom_read(FLASHROM_PROGRAMMER_INTERNAL_AP, "RW_ELOG", &buf, &buf_size)
!= VB2_SUCCESS) {
fprintf(stderr, "Could not read RW_ELOG region using flashrom\n");
return ELOGTOOL_EXIT_BAD_INPUT_PATH;
}
buffer_init(buffer, NULL, buf, buf_size);
} else {
if (buffer_from_file(buffer, filename) != 0) {
fprintf(stderr, "Could not read input file: %s\n", filename);
return ELOGTOOL_EXIT_BAD_INPUT_PATH;
}
}
return 0;
}
static int elog_list_events(const struct buffer *buf)
{
const struct event_header *event;
const void *data;
uint32_t data_len;
unsigned int count = 0;
data = buffer_get(buf);
data_len = buffer_size(buf);
if (elog_verify_header(data) != CB_SUCCESS) {
fprintf(stderr, "FATAL: Invalid elog header\n");
return ELOGTOOL_EXIT_INVALID_ELOG_FORMAT;
}
/* Point to first event */
event = (const struct event_header *)(data + sizeof(struct elog_header));
while ((const void *)(event) < data + data_len) {
if (event->type == ELOG_TYPE_EOL || event->length == 0)
break;
eventlog_print_event(event, count);
event = elog_get_next_event(event);
count++;
}
return ELOGTOOL_EXIT_SUCCESS;
}
static int cmd_list(const char *filename)
{
int ret;
// Returned buffer must be freed.
struct buffer buf;
ret = elog_read(filename, &buf);
if (ret != 0)
return ret;
ret = elog_list_events(&buf);
buffer_delete(&buf);
return ret;
}
int main(int argc, char **argv)
{
int argflag;
char *input_file = NULL;
if (argc < 2) {
usage(argv[0]);
return ELOGTOOL_EXIT_BAD_ARGS;
}
while (1) {
int option_index;
argflag = getopt_long(argc, argv, "hf:", long_options, &option_index);
if (argflag == -1)
break;
switch (argflag) {
case 'h':
case '?':
usage(argv[0]);
return ELOGTOOL_EXIT_SUCCESS;
case 'f':
if (!optarg) {
usage(argv[0]);
return ELOGTOOL_EXIT_BAD_ARGS;
}
input_file = optarg;
break;
default:
break;
}
}
/* At least one command must be available. */
if (optind >= argc) {
usage(argv[0]);
return ELOGTOOL_EXIT_BAD_ARGS;
}
if (!strcmp(argv[optind], "list"))
return cmd_list(input_file);
return ELOGTOOL_EXIT_SUCCESS;
}
|
