the two checks make sure that:
* no user defined role 'PVEPoolUser' exists
* the user gets a hint for roles only containing Pool.Allocate and
    not Pool.Audit

a very simple parser for user.cfg was implemented to be able to
parse the (in pve 6 invalid) Pool.Audit permission

Signed-off-by: Lorenz Stechauner <l.stechau...@proxmox.com>
---
 PVE/CLI/pve6to7.pm | 48 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/PVE/CLI/pve6to7.pm b/PVE/CLI/pve6to7.pm
index 90f92a55..4fe606f3 100644
--- a/PVE/CLI/pve6to7.pm
+++ b/PVE/CLI/pve6to7.pm
@@ -9,6 +9,7 @@ use PVE::API2::LXC;
 use PVE::API2::Qemu;
 use PVE::API2::Certificates;
 
+use PVE::AccessControl;
 use PVE::Ceph::Tools;
 use PVE::Cluster;
 use PVE::Corosync;
@@ -16,10 +17,11 @@ use PVE::INotify;
 use PVE::JSONSchema;
 use PVE::RPCEnvironment;
 use PVE::Storage;
-use PVE::Tools qw(run_command);
+use PVE::Tools qw(run_command split_list);
 use PVE::QemuServer;
 use PVE::VZDump::Common;
 
+use File::Slurp;
 use Term::ANSIColor;
 
 use PVE::CLIHandler;
@@ -601,6 +603,49 @@ sub check_cifs_credential_location {
     log_pass("no CIFS credentials at outdated location found.") if !$found;
 }
 
+sub check_custom_pool_roles {
+    log_info("Checking custom roles for pool permissions..");
+
+    my $raw = read_file('/etc/pve/user.cfg');
+
+    my $roles = {};
+    while ($raw =~ /^\s*role:(.*?):(.*?):(.*?)\s*$/gm) {
+       my ($role, $privlist) = ($1, $2);
+
+       if (!PVE::AccessControl::verify_rolename($role, 1)) {
+           warn "user config - ignore role '$role' - invalid characters in 
role name\n";
+           next;
+       }
+
+       $roles->{$role} = {} if !$roles->{$role};
+       foreach my $priv (split_list($privlist)) {
+           $roles->{$role}->{$priv} = 1;
+       }
+    }
+
+    foreach my $role (sort keys %{$roles}) {
+       if (PVE::AccessControl::role_is_special($role)) {
+           next;
+       }
+
+       if ($role eq "PVEPoolUser") {
+           # the user created a custom role named PVEPoolUser
+           log_fail("Custom role '$role' has a restricted name - a built-in 
role 'PVEPoolUser' will be available with the upgrade");
+       } else {
+           log_pass("Custom role '$role' has no restricted name");
+       }
+
+       my $perms = $roles->{$role};
+       if ($perms->{'Pool.Allocate'} && $perms->{'Pool.Audit'}) {
+           log_pass("Custom role '$role' contains updated pool permissions");
+       } elsif ($perms->{'Pool.Allocate'}) {
+           log_warn("Custom role '$role' contains permission 'Pool.Allocate' - 
to ensure same behavior add 'Pool.Audit' to this role");
+       } else {
+           log_pass("Custom role '$role' contains no permissions that need to 
be updated");
+       }
+    }
+}
+
 sub check_misc {
     print_header("MISCELLANEOUS CHECKS");
     my $ssh_config = eval { PVE::Tools::file_get_contents('/root/.ssh/config') 
};
@@ -693,6 +738,7 @@ sub check_misc {
 
     check_backup_retention_settings();
     check_cifs_credential_location();
+    check_custom_pool_roles();
 }
 
 __PACKAGE__->register_method ({
-- 
2.30.2



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