NetBSD/bin/sh/redir.h

56 lines
2.4 KiB
C

/* $NetBSD: redir.h,v 1.24 2017/06/30 23:01:21 kre Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kenneth Almquist.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)redir.h 8.2 (Berkeley) 5/4/95
*/
/* flags passed to redirect */
#define REDIR_PUSH 0x01 /* save previous values of file descriptors */
#define REDIR_BACKQ 0x02 /* save the command output in memory */
#define REDIR_VFORK 0x04 /* running under vfork(2), be careful */
#define REDIR_KEEP 0x08 /* don't close-on-exec */
union node;
void redirect(union node *, int);
void popredir(void);
int fd0_redirected_p(void);
void clearredir(int);
int movefd(int, int);
int to_upper_fd(int);
void register_sh_fd(int, void (*)(int, int));
void sh_close(int);
struct output;
int outredir(struct output *, union node *, int);
int max_user_fd; /* highest fd used by user */