[PATCH pve-storage 1/2] fix #7360: esxi: store password file as utf-8

[Arthur Bied-Charreton <a.bied-charreton@proxmox.com>]

The password reaches esxi_set_credentials() as a Perl string, and
file_set_contents() wrote it without encoding it. For characters in the
U+0080 to U+00FF range, like 'é', this produced Latin-1 bytes. Both
listvms.py and the FUSE tool decode the pasword file as UTF-8, so
listing guests failed with a decode error.

Force UTF-8 encoding when writing the file. Existing storages with an
affected password need to have their password set again to rewrite the
file.

Link: https://bugzilla.proxmox.com/show_bug.cgi?id=7360
Signed-off-by: Arthur Bied-Charreton <a.bied-charreton@proxmox.com>
---
 src/PVE/Storage/ESXiPlugin.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PVE/Storage/ESXiPlugin.pm b/src/PVE/Storage/ESXiPlugin.pm
index bc2e481..7defb7b 100644
--- a/src/PVE/Storage/ESXiPlugin.pm
+++ b/src/PVE/Storage/ESXiPlugin.pm
@@ -81,7 +81,7 @@ sub esxi_set_credentials {
     my $cred_file = esxi_cred_file_name($storeid);
     mkdir "/etc/pve/priv/storage";
 
-    PVE::Tools::file_set_contents($cred_file, $password);
+    PVE::Tools::file_set_contents($cred_file, $password, 0600, 1);
 
     return $cred_file;
 }
-- 
2.47.3