rpc: improve IPC socket error message for filesystem compatibility

Clarify that ext2/ext3/ext4 filesystems support Unix domain sockets
(including Thunderbolt Type-C drives), while exFAT does not. This helps
users understand why socket creation may fail on certain filesystems.

Signed-off-by: Cloorc <[email protected]>

Author: cloorc

rpc/ipc_unix.go

@@ -21,6 +21,7 @@ package rpc
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net"
 	"os"
@@ -50,7 +51,7 @@ func ipcListen(endpoint string) (net.Listener, error) {
 	os.Remove(endpoint)
 	l, err := net.Listen("unix", endpoint)
 	if err != nil {
-		return nil, err
+		return nil, errors.Join(err, fmt.Errorf("make sure the disk partition of %s supports Unix domain sockets (ext2/ext3/ext4 work; exFAT does not)", endpoint))
 	}
 	os.Chmod(endpoint, 0600)
 	return l, nil