1 files changed, 76 insertions, 0 deletions
diff --git a/dracut-early-kdump.sh b/dracut-early-kdump.sh
new file mode 100755
index 0000000..6788a6b
--- /dev/null
+++ b/dracut-early-kdump.sh
@@ -0,0 +1,76 @@
+#! /bin/sh
+
+KEXEC=/sbin/kexec
+standard_kexec_args="-p"
+KDUMP_FILE_LOAD=""
+
+EARLY_KDUMP_INITRD=""
+EARLY_KDUMP_KERNEL=""
+EARLY_KDUMP_CMDLINE=""
+EARLY_KDUMP_KERNELVER=""
+EARLY_KEXEC_ARGS=""
+
+. /etc/sysconfig/kdump
+. /lib/dracut-lib.sh
+. /lib/kdump-lib.sh
+
+prepare_parameters()
+{
+    EARLY_KDUMP_CMDLINE=$(prepare_cmdline "${KDUMP_COMMANDLINE}" "${KDUMP_COMMANDLINE_REMOVE}" "${KDUMP_COMMANDLINE_APPEND}")
+    KDUMP_BOOTDIR=$(check_boot_dir "${KDUMP_BOOTDIR}")
+
+    EARLY_KDUMP_KERNEL="${KDUMP_BOOTDIR}/${KDUMP_IMG}-earlykdump${KDUMP_IMG_EXT}"
+    EARLY_KDUMP_INITRD="${KDUMP_BOOTDIR}/initramfs-earlykdump.img"
+}
+
+early_kdump_load()
+{
+    check_kdump_feasibility
+    if [ $? -ne 0 ]; then
+        return 1
+    fi
+
+    if is_fadump_capable; then
+        echo "WARNING: early kdump doesn't support fadump."
+        return 1
+    fi
+
+    check_current_kdump_status
+    if [ $? == 0 ]; then
+        return 1
+    fi
+
+    prepare_parameters
+
+    EARLY_KEXEC_ARGS=$(prepare_kexec_args "${KEXEC_ARGS}")
+
+    if [ "$KDUMP_FILE_LOAD" == "on" ]; then
+        echo "Using kexec file based syscall."
+        EARLY_KEXEC_ARGS="$EARLY_KEXEC_ARGS -s"
+    fi
+
+    $KEXEC ${EARLY_KEXEC_ARGS} $standard_kexec_args \
+        --command-line="$EARLY_KDUMP_CMDLINE" \
+        --initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL
+    if [ $? == 0 ]; then
+        echo "kexec: loaded early-kdump kernel"
+        return 0
+    else
+        echo "kexec: failed to load early-kdump kernel"
+        return 1
+    fi
+}
+
+set_early_kdump()
+{
+    if getargbool 0 rd.earlykdump; then
+        echo "early-kdump is enabled."
+        early_kdump_load
+    else
+        echo "early-kdump is disabled."
+    fi
+
+    return 0
+}
+
+set_early_kdump