Populate /home partition path, if any.

src/modules/partition/core/PartUtils.cpp

@@ -181,6 +181,76 @@ lookForFstabEntries( const QString& partitionPath )
 }
 
 
+QString
+findPartitionPathForMountPoint( const FstabEntryList& fstab,
+                                const QString& mountPoint )
+{
+    if ( fstab.isEmpty() )
+        return QString();
+
+    foreach ( const FstabEntry& entry, fstab )
+    {
+        if ( entry.mountPoint == mountPoint )
+        {
+            QProcess readlink;
+            QString partPath;
+
+            if ( entry.partitionNode.startsWith( "/dev" ) ) // plain dev node
+            {
+                partPath = entry.partitionNode;
+            }
+            else if ( entry.partitionNode.startsWith( "LABEL=" ) )
+            {
+                partPath = entry.partitionNode.mid( 6 );
+                partPath.remove( "\"" );
+                partPath.replace( "\\040", "\\ " );
+                partPath.prepend( "/dev/disk/by-label/" );
+            }
+            else if ( entry.partitionNode.startsWith( "UUID=" ) )
+            {
+                partPath = entry.partitionNode.mid( 5 );
+                partPath.remove( "\"" );
+                partPath = partPath.toLower();
+                partPath.prepend( "/dev/disk/by-uuid/" );
+            }
+            else if ( entry.partitionNode.startsWith( "PARTLABEL=" ) )
+            {
+                partPath = entry.partitionNode.mid( 10 );
+                partPath.remove( "\"" );
+                partPath.replace( "\\040", "\\ " );
+                partPath.prepend( "/dev/disk/by-partlabel/" );
+            }
+            else if ( entry.partitionNode.startsWith( "PARTUUID=" ) )
+            {
+                partPath = entry.partitionNode.mid( 9 );
+                partPath.remove( "\"" );
+                partPath = partPath.toLower();
+                partPath.prepend( "/dev/disk/by-partuuid/" );
+            }
+
+            // At this point we either have /dev/sda1, or /dev/disk/by-something/...
+
+            if ( partPath.startsWith( "/dev/disk/by-" ) ) // we got a fancy node
+            {
+                readlink.start( "readlink", { "-en", partPath });
+                if ( !readlink.waitForStarted( 1000 ) )
+                    return QString();
+                if ( !readlink.waitForFinished( 1000 ) )
+                    return QString();
+                if ( readlink.exitCode() != 0 || readlink.exitStatus() != QProcess::NormalExit )
+                    return QString();
+                partPath = QString::fromLocal8Bit(
+                               readlink.readAllStandardOutput() ).trimmed();
+            }
+
+            return partPath;
+        }
+    }
+
+    return QString();
+}
+
+
 OsproberEntryList
 runOsprober( PartitionCoreModule* core )
 {
@@ -223,12 +293,14 @@ runOsprober( PartitionCoreModule* core )
                 continue;
 
             FstabEntryList fstabEntries = lookForFstabEntries( path );
+            QString homePath = findPartitionPathForMountPoint( fstabEntries, "/home" );
 
             osproberEntries.append( { prettyName,
                                       path,
                                       canBeResized( core, path ),
                                       lineColumns,
-                                      fstabEntries } );
+                                      fstabEntries,
+                                      homePath } );
             osproberCleanLines.append( line );
         }
     }