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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.
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@ -3080,7 +3080,8 @@ systemd_bootchart_SOURCES = \
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src/bootchart/svg.h
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systemd_bootchart_LDADD = \
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libsystemd-shared.la
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libsystemd-shared.la \
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libsystemd-journal.la
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rootlibexec_PROGRAMS += \
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systemd-bootchart
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@ -48,6 +48,7 @@
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <systemd/sd-journal.h>
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#include "util.h"
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#include "fileio.h"
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@ -98,6 +99,8 @@ static void signal_handler(int sig) {
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#define BOOTCHART_CONF "/etc/systemd/bootchart.conf"
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#define BOOTCHART_MAX (16*1024*1024)
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static void parse_conf(void) {
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char *init = NULL, *output = NULL;
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const ConfigTableItem items[] = {
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@ -237,6 +240,54 @@ static int parse_args(int argc, char *argv[]) {
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return 0;
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}
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static void do_journal_append(char *file)
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{
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struct iovec iovec[5];
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int r, f, j = 0;
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ssize_t n;
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char _cleanup_free_ *bootchart_file = NULL, *bootchart_message = NULL,
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*p = NULL;
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bootchart_file = strappend("BOOTCHART_FILE=", file);
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if (bootchart_file)
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IOVEC_SET_STRING(iovec[j++], bootchart_file);
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IOVEC_SET_STRING(iovec[j++], "MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518");
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IOVEC_SET_STRING(iovec[j++], "PRIORITY=7");
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bootchart_message = strjoin("MESSAGE=Bootchart created: ", file, NULL);
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if (bootchart_message)
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IOVEC_SET_STRING(iovec[j++], bootchart_message);
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p = malloc(9 + BOOTCHART_MAX);
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if (!p) {
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r = log_oom();
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return;
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}
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memcpy(p, "BOOTCHART=", 10);
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f = open(file, O_RDONLY);
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if (f < 0) {
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log_error("Failed to read bootchart data: %s\n", strerror(-errno));
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return;
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}
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n = loop_read(f, p + 10, BOOTCHART_MAX, false);
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if (n < 0) {
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log_error("Failed to read bootchart data: %s\n", strerror(-n));
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close(f);
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return;
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}
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close(f);
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iovec[j].iov_base = p;
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iovec[j].iov_len = 10 + n;
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j++;
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r = sd_journal_sendv(iovec, j);
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if (r < 0)
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log_error("Failed to send bootchart: %s", strerror(-r));
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}
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int main(int argc, char *argv[]) {
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_cleanup_free_ char *build = NULL;
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struct sigaction sig = {
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@ -382,6 +433,8 @@ int main(int argc, char *argv[]) {
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fprintf(stderr, "systemd-bootchart wrote %s\n", output_file);
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do_journal_append(output_file);
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if (of)
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fclose(of);
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