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authorAuke Kok <auke-jan.h.kok@intel.com>2013-04-15 16:23:42 -0700
committerAuke Kok <auke-jan.h.kok@intel.com>2013-04-15 16:28:41 -0700
commitc4d58b0b6d238b955ece39a9dd9d3ca84b3408f3 (patch)
tree6cdaa29de380c94bb38c3778a5b3c49a26da1f17 /src
parent8ad802ec3539142e2b1bf06ae8257b302630c184 (diff)
bootchart: put the bootchart into the journal.
This bit of code is mostly stolen from coredump.c. We construct a simple journal message and append the bootchart file in the journal automatically. You can extract the latest bootchart from the current boot with something like: $ journalctl -b MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518 --field=BOOTCHART which prints it to stdout. None of the other logic is touched. The journal entry is created even if bootchart was run manually, which is probably wrong.
Diffstat (limited to 'src')
-rw-r--r--src/bootchart/bootchart.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c
index 288148f483..d6c63cd129 100644
--- a/src/bootchart/bootchart.c
+++ b/src/bootchart/bootchart.c
@@ -48,6 +48,7 @@
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
+#include <systemd/sd-journal.h>
#include "util.h"
#include "fileio.h"
@@ -98,6 +99,8 @@ static void signal_handler(int sig) {
#define BOOTCHART_CONF "/etc/systemd/bootchart.conf"
+#define BOOTCHART_MAX (16*1024*1024)
+
static void parse_conf(void) {
char *init = NULL, *output = NULL;
const ConfigTableItem items[] = {
@@ -237,6 +240,54 @@ static int parse_args(int argc, char *argv[]) {
return 0;
}
+static void do_journal_append(char *file)
+{
+ struct iovec iovec[5];
+ int r, f, j = 0;
+ ssize_t n;
+ char _cleanup_free_ *bootchart_file = NULL, *bootchart_message = NULL,
+ *p = NULL;
+
+ bootchart_file = strappend("BOOTCHART_FILE=", file);
+ if (bootchart_file)
+ IOVEC_SET_STRING(iovec[j++], bootchart_file);
+
+ IOVEC_SET_STRING(iovec[j++], "MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518");
+ IOVEC_SET_STRING(iovec[j++], "PRIORITY=7");
+ bootchart_message = strjoin("MESSAGE=Bootchart created: ", file, NULL);
+ if (bootchart_message)
+ IOVEC_SET_STRING(iovec[j++], bootchart_message);
+
+ p = malloc(9 + BOOTCHART_MAX);
+ if (!p) {
+ r = log_oom();
+ return;
+ }
+
+ memcpy(p, "BOOTCHART=", 10);
+
+ f = open(file, O_RDONLY);
+ if (f < 0) {
+ log_error("Failed to read bootchart data: %s\n", strerror(-errno));
+ return;
+ }
+ n = loop_read(f, p + 10, BOOTCHART_MAX, false);
+ if (n < 0) {
+ log_error("Failed to read bootchart data: %s\n", strerror(-n));
+ close(f);
+ return;
+ }
+ close(f);
+
+ iovec[j].iov_base = p;
+ iovec[j].iov_len = 10 + n;
+ j++;
+
+ r = sd_journal_sendv(iovec, j);
+ if (r < 0)
+ log_error("Failed to send bootchart: %s", strerror(-r));
+}
+
int main(int argc, char *argv[]) {
_cleanup_free_ char *build = NULL;
struct sigaction sig = {
@@ -382,6 +433,8 @@ int main(int argc, char *argv[]) {
fprintf(stderr, "systemd-bootchart wrote %s\n", output_file);
+ do_journal_append(output_file);
+
if (of)
fclose(of);