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+.\" $OpenBSD: ENGINE_set_flags.3,v 1.1 2018/04/15 17:02:03 schwarze Exp $
+.\" content checked up to: 
+.\" OpenSSL ENGINE_add 1f13ad31 Dec 25 17:50:39 2017 +0800
+.\"
+.\" Copyright (c) 2018 Ingo Schwarze <schwarze@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: April 15 2018 $
+.Dt ENGINE_SET_FLAGS 3
+.Os
+.Sh NAME
+.Nm ENGINE_set_flags ,
+.Nm ENGINE_get_flags
+.Nd modify the behaviour of an ENGINE object
+.Sh SYNOPSIS
+.In openssl/engine.h
+.Ft int
+.Fo ENGINE_set_flags
+.Fa "ENGINE *e"
+.Fa "int flags"
+.Fc
+.Ft int
+.Fo ENGINE_get_flags
+.Fa "const ENGINE *e"
+.Fc
+.Sh DESCRIPTION
+.Fn ENGINE_set_flags
+sets the flags attribute of
+.Fa e
+to the new
+.Fa flags .
+The previous state of the flags attribute is overwritten.
+Flags that were previously set are cleared
+unless they are also present in the new
+.Fa flags .
+.Pp
+The
+.Fa flags
+argument can be the bitwise OR of zero or more
+of the following constants:
+.Bl -tag -width Ds
+.It Dv ENGINE_FLAGS_BY_ID_COPY
+.Xr ENGINE_by_id 3
+returns a shallow copy of the
+.Vt ENGINE
+object it found rather than incrementing the reference count
+and returning a pointer to the original.
+.It Dv ENGINE_FLAGS_MANUAL_CMD_CTRL
+.Xr ENGINE_ctrl 3
+lets the function installed with
+.Xr ENGINE_set_ctrl_function 3
+handle all commands except
+.Dv ENGINE_CTRL_HAS_CTRL_FUNCTION ,
+even the builtin commands.
+.It Dv ENGINE_FLAGS_NO_REGISTER_ALL
+.Xr ENGINE_register_all_complete 3
+skips
+.Fa e .
+.El
+.Sh RETURN VALUES
+.Fn ENGINE_set_flags
+always returns 1.
+.Pp
+.Fn ENGINE_get_flags
+returns the
+.Fa flags
+attribute of
+.Fa e .