14b88c807SRodney W. Grimes /*- 2*8a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 3*8a16b7a1SPedro F. Giffuni * 44b88c807SRodney W. Grimes * Copyright (c) 1991, 1993 54b88c807SRodney W. Grimes * The Regents of the University of California. All rights reserved. 64b88c807SRodney W. Grimes * 74b88c807SRodney W. Grimes * This code is derived from software contributed to Berkeley by 84b88c807SRodney W. Grimes * Kenneth Almquist. 94b88c807SRodney W. Grimes * 104b88c807SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 114b88c807SRodney W. Grimes * modification, are permitted provided that the following conditions 124b88c807SRodney W. Grimes * are met: 134b88c807SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 144b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 154b88c807SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 164b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 174b88c807SRodney W. Grimes * documentation and/or other materials provided with the distribution. 18fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors 194b88c807SRodney W. Grimes * may be used to endorse or promote products derived from this software 204b88c807SRodney W. Grimes * without specific prior written permission. 214b88c807SRodney W. Grimes * 224b88c807SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 234b88c807SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 244b88c807SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 254b88c807SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 264b88c807SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 274b88c807SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 284b88c807SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 294b88c807SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 304b88c807SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 314b88c807SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 324b88c807SRodney W. Grimes * SUCH DAMAGE. 334b88c807SRodney W. Grimes */ 344b88c807SRodney W. Grimes 354b88c807SRodney W. Grimes /* flags passed to redirect */ 364b88c807SRodney W. Grimes #define REDIR_PUSH 01 /* save previous values of file descriptors */ 374b88c807SRodney W. Grimes #define REDIR_BACKQ 02 /* save the command output in memory */ 384b88c807SRodney W. Grimes 394b88c807SRodney W. Grimes union node; 405134c3f7SWarner Losh void redirect(union node *, int); 415134c3f7SWarner Losh void popredir(void); 425134c3f7SWarner Losh int fd0_redirected_p(void); 435134c3f7SWarner Losh void clearredir(void); 44aa9caaf6SPeter Wemm 45