From 3a4b59a7efd7aeb83beb113f4c84f001ce9dbbaa Mon Sep 17 00:00:00 2001
From: Friedrich Schwedler <fschwedler@emlix.com>
Date: Tue, 2 Dec 2025 13:23:41 +0100
Subject: [PATCH 1/2] feat: add script to cleanupd json log files

---
 .../elos-plugin-backend-json.install          |  1 +
 .../jsonbackend/CMakeLists.txt                |  5 ++
 .../jsonbackend/elos_log_cleanup.sh           | 61 +++++++++++++++++++
 .../storagebackends/jsonbackend/index.rst     |  5 ++
 4 files changed, 72 insertions(+)
 create mode 100755 src/plugins/storagebackends/jsonbackend/elos_log_cleanup.sh

diff --git a/debian.native/elos-plugin-backend-json.install b/debian.native/elos-plugin-backend-json.install
index cf6907be..b4c633b6 100644
--- a/debian.native/elos-plugin-backend-json.install
+++ b/debian.native/elos-plugin-backend-json.install
@@ -1 +1,2 @@
 usr/lib/*/elos/backend/backend_json.so
+usr/bin/elos_log_cleanup
diff --git a/src/plugins/storagebackends/jsonbackend/CMakeLists.txt b/src/plugins/storagebackends/jsonbackend/CMakeLists.txt
index 5e86a4bb..21689b1b 100644
--- a/src/plugins/storagebackends/jsonbackend/CMakeLists.txt
+++ b/src/plugins/storagebackends/jsonbackend/CMakeLists.txt
@@ -38,6 +38,11 @@ target_link_libraries(
 
 if (INSTALL_ELOS_PLUGINS)
   install(TARGETS backend_json DESTINATION ${ELOSD_BACKEND_PATH})
+  install(
+    PROGRAMS elos_log_cleanup.sh
+    DESTINATION ${CMAKE_INSTALL_BINDIR}
+    RENAME elos_log_cleanup
+  )
 endif()
 
 create_static_library_from_shared(
diff --git a/src/plugins/storagebackends/jsonbackend/elos_log_cleanup.sh b/src/plugins/storagebackends/jsonbackend/elos_log_cleanup.sh
new file mode 100755
index 00000000..e9ab4f2b
--- /dev/null
+++ b/src/plugins/storagebackends/jsonbackend/elos_log_cleanup.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+# SPDX-License-Identifier: MIT
+###############################################################################
+print_info() {
+    SCRIPT_NAME="${0##*/}"
+    echo "
+Removes all but the last N elosd json log files
+
+Usage: ${SCRIPT_NAME} [OPTIONS] [STORAGE_PATH]
+
+Options:
+ -k, --keep <NUMBER>  keep NUMBER log files and delete the rest (default 10)
+ -H, --host <HOST>    only delete logs with that specified host id
+ -d, --dryrun         don't delete anything just show what would be kept
+ -h, --help           print this help
+
+Examples:
+ ${SCRIPT_NAME}      # delete all files matching the pattern \"/tmp/elosd_*_*_*.log\"
+ ${SCRIPT_NAME} -k 1 # only keep the currently active log file
+"
+}
+###############################################################################
+set -eu
+
+STORAGE_PATH="/tmp/elosd_%host%_%date%_%count%.log"
+HOST="*"
+KEEP="10"
+DRYRUN=0
+
+while [ $# -gt 0 ]; do
+	case ${1} in
+		--keep | -k)   KEEP="${2}"; shift ;;
+		--host | -H)   HOST="${2}"; shift ;;
+		--dryrun | -d) DRYRUN=1 ;;
+		--help | -h)
+			print_info
+			exit 0
+			;;
+		-*)
+			echo "error: unknown option: ${1}"
+			print_info
+			exit 1
+			;;
+		*) STORAGE_PATH="${1}" ;;
+	esac
+	shift
+done
+
+STORAGE_PATH="$(echo "${STORAGE_PATH}" | sed -e "s/%host%/${HOST}/g" -e 's/%date%/*/g' -e 's/%count%/*/g')"
+
+if [ "${DRYRUN}" -ne 0 ]; then
+	echo "# Keeping:"
+	ls -1t ${STORAGE_PATH} | head -n 10
+fi
+
+KEEP=$(($KEEP + 1))
+if [ "${DRYRUN}" -eq 0 ]; then
+	for log in $(ls -1t ${STORAGE_PATH} | tail -n "+${KEEP}"); do
+		rm "${log}"
+	done
+fi
diff --git a/src/plugins/storagebackends/jsonbackend/index.rst b/src/plugins/storagebackends/jsonbackend/index.rst
index cf00d980..0968fda4 100644
--- a/src/plugins/storagebackends/jsonbackend/index.rst
+++ b/src/plugins/storagebackends/jsonbackend/index.rst
@@ -93,4 +93,9 @@ If PathSizeLimit itself is not set, it will default to 1024. This value
 can be changed by defining ``ELOS_JSON_LOGGING_PATH_LIMIT_DEFAULT`` at
 compile time.
 
+Log Cleanup
+-----------
 
+To help with cleaning up old log files a small helper program is provided that deletes all but the newest few log files.
+
+.. program-output:: elos_log_cleanup --help

From a9308e99354475e8a02f3083283f25bf759d60a6 Mon Sep 17 00:00:00 2001
From: Armin Butscher <armin.butscher@emlix.com>
Date: Thu, 4 Dec 2025 13:30:13 +0100
Subject: [PATCH 2/2] elos: Update to 1.41.0

---
 cmake/project.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/project.cmake b/cmake/project.cmake
index 419a36ab..faf7eb68 100644
--- a/cmake/project.cmake
+++ b/cmake/project.cmake
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MIT
-set(ELOS_VERSION 1.40.13)
+set(ELOS_VERSION 1.41.0)
 
 # Attention: Aside from the version, as many things as possible in this file
 #   should be put into functions, as this solves potential issues with commands