https://github.com/freebsd/freebsd-ports/blob/e198aef78afa4fd78ddc62fb5d0f7caa1b076bb0/databases/gdbm/files/patch-src_lock.c

--- a/src/lock.c.orig	2025-03-06 16:24:09 UTC
+++ b/src/lock.c
@@ -73,15 +73,10 @@ try_lock_flock (GDBM_FILE dbf, int nb)
     {
       return TRY_LOCK_OK;
     }
-  else if (errno == EWOULDBLOCK)
+  else if (errno == EWOULDBLOCK || errno == EINTR)
     {
       return TRY_LOCK_FAIL;
     }
-  else if (errno == EINTR)
-    {
-      errno = ETIME;
-      return TRY_LOCK_FAIL;
-    }
 #endif
   return TRY_LOCK_NEXT;
 }
@@ -116,7 +111,6 @@ try_lock_lockf (GDBM_FILE dbf, int nb)
       switch (errno)
 	{
 	case EINTR:
-	  errno = ETIME;
 	case EACCES:
 	case EAGAIN:
 	case EDEADLK:
@@ -162,7 +156,6 @@ try_lock_fcntl (GDBM_FILE dbf, int nb)
   switch (errno)
     {
     case EINTR:
-      errno = ETIME;
     case EACCES:
     case EAGAIN:
     case EDEADLK: