1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/kmsg_dump.h>
 3#include <linux/console.h>
 4#include <shared/init.h>
 5#include <shared/kern.h>
 6#include <os.h>
 7
 8static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
 9				enum kmsg_dump_reason reason)
10{
11	static char line[1024];
12	struct console *con;
13	size_t len = 0;
14
15	/* only dump kmsg when no console is available */
16	if (!console_trylock())
17		return;
18
19	for_each_console(con)
20		break;
21
22	console_unlock();
23
24	if (con)
25		return;
26
27	printf("kmsg_dump:\n");
28	while (kmsg_dump_get_line(dumper, true, line, sizeof(line), &len)) {
29		line[len] = '\0';
30		printf("%s", line);
31	}
32}
33
34static struct kmsg_dumper kmsg_dumper = {
35	.dump = kmsg_dumper_stdout
36};
37
38int __init kmsg_dumper_stdout_init(void)
39{
40	return kmsg_dump_register(&kmsg_dumper);
41}
42
43__uml_postsetup(kmsg_dumper_stdout_init);