From 8387b514f133d5450e72f58866222d313201a64b Mon Sep 17 00:00:00 2001
From: Kairui Song <kasong@redhat.com>
Date: Tue, 18 May 2021 16:13:16 +0800
Subject: [PATCH] kdump-lib.sh: introduce a helper to get all crypt dev used by
 kdump

Resolves: bz1951415
Upstream: fedora
Conflict: None

commit 1c70cf51c7678499e2d48eec10ad24b839fe9f64
Author: Kairui Song <kasong@redhat.com>
Date:   Tue May 18 16:13:16 2021 +0800

    kdump-lib.sh: introduce a helper to get all crypt dev used by kdump

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Pingfan Liu <piliu@redhat.com>

Signed-off-by: Kairui Song <kasong@redhat.com>
---
 kdump-lib.sh | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/kdump-lib.sh b/kdump-lib.sh
index cd1e392..1c68e6a 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -956,3 +956,24 @@ get_luks_crypt_dev()
         get_luks_crypt_dev "$(< "$_x/dev")"
     done
 }
+
+# kdump_get_maj_min <device>
+# Prints the major and minor of a device node.
+# Example:
+# $ get_maj_min /dev/sda2
+# 8:2
+kdump_get_maj_min() {
+    local _majmin
+    _majmin="$(stat -L -c '%t:%T' "$1" 2> /dev/null)"
+    printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))"
+}
+
+get_all_kdump_crypt_dev()
+{
+    local _dev _crypt
+
+    for _dev in $(get_block_dump_target); do
+        _crypt=$(get_luks_crypt_dev $(kdump_get_maj_min "$_dev"))
+        [[ -n "$_crypt" ]] && echo $_crypt
+    done
+}