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Append to crash log instead of creating new one

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Multiple crashes accumulate in case you have some kind
of auto-restart for daemons.
This commit is contained in:
John Barboza 2018-03-10 14:02:33 -05:00 • committed by Christian Decker
parent f24a7b9356
commit b4f7ce61b4
1 changed files with 7 additions and 3 deletions
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10
lightningd/log.c
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@ -510,7 +510,7 @@ static void log_crash(int sig)
/* We expect to be in config dir. */ /* We expect to be in config dir. */
logfile = "crash.log"; logfile = "crash.log";
fd = open(logfile, O_WRONLY|O_CREAT, 0600); fd = open(logfile, O_WRONLY|O_CREAT|O_APPEND, 0600);
if (fd < 0) { if (fd < 0) {
logfile = "/tmp/lightning-crash.log"; logfile = "/tmp/lightning-crash.log";
fd = open(logfile, O_WRONLY|O_CREAT, 0600); fd = open(logfile, O_WRONLY|O_CREAT, 0600);
@ -554,9 +554,13 @@ void log_dump_to_file(int fd, const struct log_book *lr)
{ {
const struct log_entry *i; const struct log_entry *i;
char buf[100]; char buf[100];
int len;
struct log_data data; struct log_data data;
time_t start; time_t start;
write_all(fd, "Start of new crash log\n",
strlen("Start of new crash log\n"));
i = list_top(&lr->log, const struct log_entry, list); i = list_top(&lr->log, const struct log_entry, list);
if (!i) { if (!i) {
write_all(fd, "0 bytes:\n\n", strlen("0 bytes:\n\n")); write_all(fd, "0 bytes:\n\n", strlen("0 bytes:\n\n"));
@ -564,8 +568,8 @@ void log_dump_to_file(int fd, const struct log_book *lr)
} }
start = lr->init_time.ts.tv_sec; start = lr->init_time.ts.tv_sec;
sprintf(buf, "%zu bytes, %s", lr->mem_used, ctime(&start)); len = sprintf(buf, "%zu bytes, %s", lr->mem_used, ctime(&start));
write_all(fd, buf, strlen(buf)); write_all(fd, buf, len);
/* ctime includes \n... WTF? */ /* ctime includes \n... WTF? */
data.prefix = ""; data.prefix = "";