From 652fcdbe44c14e909f9c620792a504d1e0e2912c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20S?= <benoit@evolix.fr>
Date: Fri, 26 Jun 2020 15:49:30 +0900
Subject: [PATCH] IS_DUPLICATE_FS_LABEL: blkid has a cache that can provoke
 false positive

Disable the cache by using `-c /dev/null`.

Example of false positive:

```
/dev/mapper/HDD0-swap2: LABEL="SWAP2" UUID="5540a49e-3e7b-4528-9c4e-49fb5f8d7f3d" TYPE="swap"
/dev/dm-0: LABEL="SWAP2" UUID="5540a49e-3e7b-4528-9c4e-49fb5f8d7f3d" TYPE="swap"
```

`dm-0` may have been cached during boot time, if you don't use a cache,
it doesn't appear any more.
---
 evocheck.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/evocheck.sh b/evocheck.sh
index c94ee1a..e8b88fd 100755
--- a/evocheck.sh
+++ b/evocheck.sh
@@ -1013,7 +1013,7 @@ check_duplicate_fs_label() {
     BLKID_BIN=$(command -v blkid)
     if [ -x "$BLKID_BIN" ]; then
         tmpFile=$(mktemp -p /tmp)
-        parts=$($BLKID_BIN | grep -ve raid_member -e EFI_SYSPART | grep -Eo ' LABEL=".*"' | cut -d'"' -f2)
+        parts=$($BLKID_BIN -c /dev/null | grep -ve raid_member -e EFI_SYSPART | grep -Eo ' LABEL=".*"' | cut -d'"' -f2)
         for part in $parts; do
             echo "$part" >> "$tmpFile"
         done