commit ed7ac12f0d18743874327da5361bdf378dcec989
author Yuxiao Zhang <yuxiaozhang@google.com> Mon Oct 30 15:57:29 2023 -0700
committer Yuxiao Zhang <yuxiaozhang@google.com> Thu Nov 09 13:38:12 2023 -0800
tree 0bee1e5bc8159ec1143cd25714dc1d7cd01aaae9
parent ea0b7e02f26be64cae5ac8b55ca2244429fd9199

Kdumpctl: provide cmds for exporting kdump

root@jkekc7-nfd01:/run/log/kdump# kdumpctl list
kcore-1
kcore-2
kcore-3

kdumpctl dump kcore-1 > /tmp/core.1

Google-Bug-Id: 307608081
Change-Id: I04384e8b31917f3030e9eb8efc749f5fd1ed4726
Signed-off-by: Yuxiao Zhang <yuxiaozhang@google.com>
(cherry picked from commit e7d25bafc8d9a5c7745c4005053f959247e0873d)

recipes-google/kdump-core/files/kdumpctl

diff --git a/recipes-google/kdump-core/files/kdumpctl b/recipes-google/kdump-core/files/kdumpctl
new file mode 100644
index 0000000..8cf400f
--- /dev/null
+++ b/recipes-google/kdump-core/files/kdumpctl
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+function usage(){
+  echo " kdumpctl list               -- list existing kernel dump"
+  echo " kdumpctl dump <corefile>    -- print specific kernel dump in raw"
+  exit 1
+}
+
+exec 2>/dev/null
+
+ram_dir='/run/log/kdump'
+emmc_dir='/mnt/luks-mmcblk0_fs/kdump'
+
+function list_core(){
+  ls -A1 $emmc_dir | grep 'kcore'
+  ls -A1 $ram_dir | grep 'kcore'
+}
+
+function dump_core(){
+  if [ -z "$1" ]; then
+    usage
+  fi
+
+  if ls $emmc_dir/$1 > /dev/null; then
+    cat $emmc_dir/$1
+    exit 0
+  fi
+
+  if ls $ram_dir/$1 > /dev/null; then
+    cat $ram_dir/$1
+    exit 0
+  fi
+
+  echo "core not found"
+  exit 1
+}
+
+if [ $1 == 'list' ]; then
+  list_core
+elif [ $1 == "dump" ]; then
+  dump_core $2
+else
+  usage
+fi

recipes-google/kdump-core/kdump-core.bb

diff --git a/recipes-google/kdump-core/kdump-core.bb b/recipes-google/kdump-core/kdump-core.bb
index 78fd89a..97bfc5c 100644
--- a/recipes-google/kdump-core/kdump-core.bb
+++ b/recipes-google/kdump-core/kdump-core.bb
@@ -9,6 +9,7 @@
   file://gbmc-kexec-prepare.service \
   file://gbmc-kexec-prepare.sh \
   file://gbmc-kexec-init.sh \
+  file://kdumpctl \
   "
 S = "${WORKDIR}"
 
@@ -35,4 +36,7 @@
 
   install -d -m0755 ${D}${systemd_system_unitdir}/
   install -m0644 gbmc-kexec-prepare.service ${D}${systemd_system_unitdir}/
+
+  install -d -m0755 ${D}${bindir}
+  install -m0755 ${WORKDIR}/kdumpctl ${D}${bindir}/
 }