From d0ba9f9c140fbdec9dd3ba2ee780b0426ce313d4 Mon Sep 17 00:00:00 2001
From: Sanjeev Rohila <sanjeev.rohila@delphix.com>
Date: Thu, 11 Jul 2024 15:32:45 +0530
Subject: [PATCH] Adding logic to take case the /export/home mount before
 delting /export/home DLPX-89763 DLPX-86523 delphix-platform changes

PR URL: https://www.github.com/delphix/delphix-platform/pull/477
---
 debian/preinst                                | 48 ++++++++++++++++
 .../roles/delphix-platform/tasks/main.yml     | 56 ++++++++++++++++++-
 2 files changed, 101 insertions(+), 3 deletions(-)
 create mode 100644 debian/preinst

diff --git a/debian/preinst b/debian/preinst
new file mode 100644
index 00000000..0278f46c
--- /dev/null
+++ b/debian/preinst
@@ -0,0 +1,48 @@
+#!/bin/bash -eux
+#
+# Copyright 2024 Delphix
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+case $1 in
+upgrade)
+	# Checking the fstab file if the /export/home entry
+	# is present in the /etc/fstab, In case of container
+	# upgrade the file is already changed by the
+	# container-upgrade script and we dont need to do
+	# it again.
+	fs_tab=/etc/fstab
+	auto_master=/etc/auto.master
+
+	if grep -q "\/export\/home" "$fs_tab"; then
+		sed -i 's|/export/home|/home|g' "$fs_tab"
+		mount /home
+	fi
+
+	if [[ -e $auto_master ]]; then
+		if grep -q "\/home\s+auto_home\s+-nobrowse" "$auto_master"; then
+			sed -i 's|/home   auto_home    -nobrowse|#/home   auto_home    -nobrowse|g' "$auto_master"
+			systemctl restart autofs
+		fi
+	fi
+
+	passwd_file=/etc/passwd
+	if grep -q "\/export\/home" "$passwd_file"; then
+		sed -i 's/\/export\/home/\/home/g' /etc/passwd
+	fi
+
+	;;
+esac
+
+exit 0
diff --git a/files/common/var/lib/delphix-platform/ansible/10-delphix-platform/roles/delphix-platform/tasks/main.yml b/files/common/var/lib/delphix-platform/ansible/10-delphix-platform/roles/delphix-platform/tasks/main.yml
index 36f1956a..5ae9342f 100644
--- a/files/common/var/lib/delphix-platform/ansible/10-delphix-platform/roles/delphix-platform/tasks/main.yml
+++ b/files/common/var/lib/delphix-platform/ansible/10-delphix-platform/roles/delphix-platform/tasks/main.yml
@@ -22,7 +22,7 @@
 # it below; otherwise that task will fail.
 #
 - file:
-    path: /export/home
+    path: /home
     state: directory
     mode: 0755
 
@@ -35,7 +35,7 @@
     shell: /bin/bash
     create_home: yes
     comment: Delphix User
-    home: /export/home/delphix
+    home: /home/delphix
 
 #
 # In order for this locale to be used (e.g. by virtualization) we need
@@ -689,7 +689,7 @@
 
 - name: Source bash completion
   blockinfile:
-    dest: "/export/home/delphix/.bashrc"
+    dest: "/home/delphix/.bashrc"
     block: |
       . /etc/bash_completion.d/systemctl
       . /etc/bash_completion.d/zfs
@@ -738,3 +738,53 @@
     path: /etc/environment
     state: absent
     regexp: '^\s*PATH\s*='
+
+#
+# Soft link creation in case it doesn't exist
+#
+- name: Check export
+  ansible.builtin.stat:
+    path: /export
+  register: export_status
+
+- name: Check export home
+  ansible.builtin.stat:
+    path: /export/home
+  when: export_status.stat.exists and export_status.stat.isdir
+  register: export_home_status
+
+#
+# Before deleting the /export/home directory if the
+# home data set is mounted on /export/home if its
+# mounted remove if first and then go ahead.
+#
+- name: Check if the path is mounted
+  ansible.builtin.shell: |
+    mount | grep /export/home
+  register: mount_status
+  ignore_errors: yes
+
+- name: Unmount the path if it is mounted
+  ansible.builtin.mount:
+    path: /export/home
+    state: unmounted
+  when: mount_status.rc == 0
+
+- name: Delete home directory
+  ansible.builtin.file:
+    path: /export/home
+    state: absent
+  when: not export_status.stat.exists or export_home_status.stat.exists and export_home_status.stat.isdir
+
+- name: Create export directory
+  ansible.builtin.file:
+    path: /export
+    state: directory
+    mode: 0755
+  when: not export_status.stat.exists
+
+- name: Create the soft link
+  ansible.builtin.file:
+    src: /home
+    dest: /export/home
+    state: link