Systemd/src/shared/ptyfwd.h
Lennart Poettering d147457cc9 run: run pty forwarder at higher event priority than the bus
We want any tty I/O to happen before we look at service messages, hence
let's set priorities on them, and give tty I/O a higher priority.
2017-12-05 18:33:24 +01:00

60 lines
1.8 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
This file is part of systemd.
Copyright 2010-2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include "sd-event.h"
#include "macro.h"
typedef struct PTYForward PTYForward;
typedef enum PTYForwardFlags {
PTY_FORWARD_READ_ONLY = 1,
/* Continue reading after hangup? */
PTY_FORWARD_IGNORE_VHANGUP = 2,
/* Continue reading after hangup but only if we never read anything else? */
PTY_FORWARD_IGNORE_INITIAL_VHANGUP = 4,
} PTYForwardFlags;
typedef int (*PTYForwardHandler)(PTYForward *f, int rcode, void*userdata);
int pty_forward_new(sd_event *event, int master, PTYForwardFlags flags, PTYForward **f);
PTYForward *pty_forward_free(PTYForward *f);
int pty_forward_get_last_char(PTYForward *f, char *ch);
int pty_forward_set_ignore_vhangup(PTYForward *f, bool ignore_vhangup);
bool pty_forward_get_ignore_vhangup(PTYForward *f);
bool pty_forward_is_done(PTYForward *f);
void pty_forward_set_handler(PTYForward *f, PTYForwardHandler handler, void *userdata);
bool pty_forward_drain(PTYForward *f);
int pty_forward_set_priority(PTYForward *f, int64_t priority);
DEFINE_TRIVIAL_CLEANUP_FUNC(PTYForward*, pty_forward_free);