Introduce kdump-lib.sh for kdump shared functions

Currently in the whole kdump framework, we have some common functions
used across not only mkdumprd context and dracut context, but also 1st
kernel and 2nd kernel. We defined these functions at each script, which
is obviously not decent.

So let's introduce kdump-lib.sh for the shared functions and put it
to /lib/kdump/kdump-lib.sh.

It starts small, as you can see, only 3 functions are extracted. But in
the future more and more common functions can be added.

Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>

dracut-kdump.sh

@@ -2,6 +2,7 @@
 
 exec &> /dev/console
 . /lib/dracut-lib.sh
+. /lib/kdump-lib.sh
 
 if [ -f "$initdir/lib/dracut/no-emergency-shell" ]; then
     rm -f -- $initdir/lib/dracut/no-emergency-shell
@@ -198,21 +199,6 @@ save_vmcore_dmesg_ssh() {
 }
 
 
-is_ssh_dump_target()
-{
-    grep -q "^ssh[[:blank:]].*@" $conf_file
-}
-
-is_nfs_dump_target()
-{
-    grep -q "^nfs.*:" $conf_file
-}
-
-is_raw_dump_target()
-{
-    grep -q "^raw" $conf_file
-}
-
 get_host_ip()
 {
     local _host

dracut-module-setup.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 . $dracutfunctions
+. /lib/kdump/kdump-lib.sh
 
 check() {
     [[ $debug ]] && set -x
@@ -23,11 +24,6 @@ depends() {
     return 0
 }
 
-is_ssh_dump_target()
-{
-    grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
-}
-
 kdump_to_udev_name() {
     local dev="${1//\"/}"
 
@@ -413,6 +409,7 @@ install() {
     inst "/sbin/makedumpfile" "/sbin/makedumpfile"
     inst "/sbin/vmcore-dmesg" "/sbin/vmcore-dmesg"
     inst_hook pre-pivot 9999 "$moddir/kdump.sh"
+    inst "/lib/kdump/kdump-lib.sh" "/lib/kdump-lib.sh"
 
     # Check for all the devices and if any device is iscsi, bring up iscsi
     # target. Ideally all this should be pushed into dracut iscsi module

kdump-lib.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+#
+# Kdump common functions
+#
+
+is_ssh_dump_target()
+{
+    grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
+}
+
+is_nfs_dump_target()
+{
+    grep -q "^nfs" /etc/kdump.conf
+}
+
+is_raw_dump_target()
+{
+    grep -q "^raw" /etc/kdump.conf
+}

kexec-tools.spec

@@ -24,6 +24,7 @@ Source16: kdump.service
 Source17: rhcrashkernel-param
 Source18: kdump.sysconfig.s390x
 Source19: eppic_030413.tar.gz
+Source20: kdump-lib.sh
 
 #######################################
 # These are sources for mkdumpramfs
@@ -156,6 +157,7 @@ mkdir -p -m755 $RPM_BUILD_ROOT%{_sysconfdir}/udev/rules.d
 mkdir -p $RPM_BUILD_ROOT%{_unitdir}
 mkdir -p -m755 $RPM_BUILD_ROOT%{_bindir}
 mkdir -p -m755 $RPM_BUILD_ROOT%{_libdir}
+mkdir -p -m755 $RPM_BUILD_ROOT%{_prefix}/lib/kdump
 install -m 755 %{SOURCE1} $RPM_BUILD_ROOT%{_bindir}/kdumpctl
 
 SYSCONFIG=$RPM_SOURCE_DIR/kdump.sysconfig.%{_target_cpu}
@@ -168,6 +170,7 @@ install -m 644 %{SOURCE8} $RPM_BUILD_ROOT%{_sysconfdir}/kdump.conf
 install -m 644 kexec/kexec.8 $RPM_BUILD_ROOT%{_mandir}/man8/kexec.8
 install -m 755 %{SOURCE11} $RPM_BUILD_ROOT%{_datadir}/kdump/firstboot_kdump.py
 install -m 644 %{SOURCE12} $RPM_BUILD_ROOT%{_mandir}/man8/mkdumprd.8
+install -m 755 %{SOURCE20} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-lib.sh
 %ifnarch s390x
 # For s390x the ELF header is created in the kdump kernel and therefore kexec
 # udev rules are not required
@@ -298,6 +301,7 @@ done
 /usr/sbin/*
 %{_bindir}/*
 %{_datadir}/kdump
+%{_prefix}/lib/kdump
 %config(noreplace,missingok) %{_sysconfdir}/sysconfig/kdump
 %config(noreplace,missingok) %{_sysconfdir}/kdump.conf
 %ifnarch s390x

mkdumprd

@@ -6,6 +6,7 @@
 # Written by Cong Wang <amwang@redhat.com>
 #
 
+. /lib/kdump/kdump-lib.sh
 export IN_KDUMP=1
 
 conf_file="/etc/kdump.conf"
@@ -243,21 +244,6 @@ check_size() {
     fi
 }
 
-is_nfs_dump_target()
-{
-    grep -q "^nfs" $conf_file
-}
-
-is_ssh_dump_target()
-{
-    grep -q "^ssh.*@" $conf_file
-}
-
-is_raw_dump_target()
-{
-    grep -q "^raw" $conf_file
-}
-
 # $1: core_collector config value
 verify_core_collector() {
     if grep -q "^raw" $conf_file && [ "${1%% *}" != "makedumpfile" ]; then