Bug#964006: elogind: writes to kernel log

[Thorsten Glaser]

Package: elogind
Version: 243.7-1+debian1
Severity: normal

elogind pretends it’s the kernel. It must log to syslog instead.

If it uses systemd’s logging framework, the attached patch might help.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'oldstable-updates'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'oldstable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.6.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)

Versions of packages elogind depends on:
ii  dbus         1.12.18-1
ii  debconf      1.5.74
ii  libacl1      2.2.53-8
ii  libc6        2.30-8
ii  libcap2      1:2.36-1
ii  libelogind0  243.7-1+debian1
ii  libselinux1  3.0-1+b3
ii  libudev1     245.6-1
ii  lsb-base     11.1.0

Versions of packages elogind recommends:
ii  libpam-elogind  243.7-1+debian1
ii  policykit-1     0.105-26

elogind suggests no packages.

-- Configuration Files:
/etc/elogind/logind.conf changed:
[Login]
HandlePowerKey=poweroff
HandleLidSwitch=lock
HandleLidSwitchExternalPower=lock
HandleLidSwitchDocked=lock
RemoveIPC=no
[Sleep]


-- no debconf information
-------------- next part --------------
diff -Nru systemd-241/debian/changelog systemd-241/debian/changelog
--- systemd-241/debian/changelog	2019-05-24 22:58:59.000000000 +0200
+++ systemd-241/debian/changelog	2019-05-29 15:10:29.000000000 +0200
@@ -1,3 +1,9 @@
+systemd (241-5tarent1) wtf; urgency=low
+
+  * Add patch to prefer syslog over kmsg for auto logging. (Closes: #923559)
+
+ -- Thorsten Glaser <t.glaser at tarent.de>  Wed, 29 May 2019 15:10:29 +0200
+
 systemd (241-5) unstable; urgency=medium
 
   * Revert "Add check to switch VTs only between K_XLATE or K_UNICODE"
diff -Nru systemd-241/debian/patches/debian/Use-syslog-for-AUTO-logging-before-klog.patch systemd-241/debian/patches/debian/Use-syslog-for-AUTO-logging-before-klog.patch
--- systemd-241/debian/patches/debian/Use-syslog-for-AUTO-logging-before-klog.patch	1970-01-01 01:00:00.000000000 +0100
+++ systemd-241/debian/patches/debian/Use-syslog-for-AUTO-logging-before-klog.patch	2019-05-29 15:07:36.000000000 +0200
@@ -0,0 +1,32 @@
+# DP: make LOG_TARGET_AUTO fall back to syslog before kernel message buffer
+# DP: fixes #923559
+
+--- a/src/basic/log.c
++++ b/src/basic/log.c
+@@ -257,6 +257,7 @@ int log_open(void) {
+ 
+                 if (!prohibit_ipc &&
+                     IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG,
++                                       LOG_TARGET_AUTO,
+                                        LOG_TARGET_SYSLOG)) {
+                         r = log_open_syslog();
+                         if (r >= 0) {
+@@ -603,6 +604,7 @@ int log_dispatch_internal(
+                 }
+ 
+                 if (IN_SET(log_target, LOG_TARGET_SYSLOG_OR_KMSG,
++                                       LOG_TARGET_AUTO,
+                                        LOG_TARGET_SYSLOG)) {
+ 
+                         k = write_to_syslog(level, error, file, line, func, buffer);
+--- a/src/basic/log.h
++++ b/src/basic/log.h
+@@ -30,7 +30,7 @@ typedef enum LogTarget{
+         LOG_TARGET_JOURNAL_OR_KMSG,
+         LOG_TARGET_SYSLOG,
+         LOG_TARGET_SYSLOG_OR_KMSG,
+-        LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */
++        LOG_TARGET_AUTO, /* console if stderr is tty, journal or syslog or kmsg otherwise */
+         LOG_TARGET_NULL,
+         _LOG_TARGET_MAX,
+         _LOG_TARGET_INVALID = -1
diff -Nru systemd-241/debian/patches/series systemd-241/debian/patches/series
--- systemd-241/debian/patches/series	2019-05-24 22:58:59.000000000 +0200
+++ systemd-241/debian/patches/series	2019-05-29 15:07:36.000000000 +0200
@@ -35,3 +35,4 @@
 debian/Let-graphical-session-pre.target-be-manually-started.patch
 debian/Add-env-variable-for-machine-ID-path.patch
 debian/Drop-seccomp-system-call-filter-for-udev.patch
+debian/Use-syslog-for-AUTO-logging-before-klog.patch