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From 985837dab9c892858a92ae50043843307f5e0714 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Fri, 19 Jul 2019 18:29:11 +0200
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Subject: [PATCH] core: try to reopen /dev/kmsg again right after mounting /dev
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I was debugging stuff during early boot, and was confused that I never
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found the logs for it in kmsg. The reason for that was that /proc is
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generally not mounted the first time we do log_open() and hence
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log_set_target(LOG_TARGET_KMSG) we do when running as PID 1 had not
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effect. A lot later during start-up we call log_open() again where this
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is fixed (after the point where we close all remaining fds still open),
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but in the meantime no logs every got written to kmsg. This patch fixes
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that.
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(cherry picked from commit 0a2eef1ee1fef74be9d12f7dc4d0006b645b579c)
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Resolves: #1749212
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---
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src/core/main.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/core/main.c b/src/core/main.c
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index 44dd8348be..af7b26d6f1 100644
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--- a/src/core/main.c
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+++ b/src/core/main.c
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@@ -2215,6 +2215,11 @@ int main(int argc, char *argv[]) {
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goto finish;
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}
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+ /* Let's open the log backend a second time, in case the first time didn't
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+ * work. Quite possibly we have mounted /dev just now, so /dev/kmsg became
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+ * available, and it previously wasn't. */
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+ log_open();
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+
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r = initialize_security(
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&loaded_policy,
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&security_start_timestamp,
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