1#include <linux/kmsg_dump.h> 2#include <linux/console.h> 3#include <shared/init.h> 4#include <shared/kern.h> 5#include <os.h> 6 7static void kmsg_dumper_stdout(struct kmsg_dumper *dumper, 8 enum kmsg_dump_reason reason) 9{ 10 static char line[1024]; 11 12 size_t len = 0; 13 bool con_available = false; 14 15 /* only dump kmsg when no console is available */ 16 if (!console_trylock()) 17 return; 18 19 if (console_drivers != NULL) 20 con_available = true; 21 22 console_unlock(); 23 24 if (con_available == true) 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); 44