bin/sh/exec.h

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Kenneth Almquist.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)exec.h      8.3 (Berkeley) 6/8/95
  37  * $FreeBSD: src/bin/sh/exec.h,v 1.9.2.1 2002/07/19 04:38:51 tjr Exp $
  38  * $DragonFly: src/bin/sh/exec.h,v 1.4 2004/03/19 18:39:41 cpressey Exp $
  39  */
  40
  41 /* values of cmdtype */
  42 #define CMDUNKNOWN -1           /* no entry in table for command */
  43 #define CMDNORMAL 0             /* command is an executable program */
  44 #define CMDBUILTIN 1            /* command is a shell builtin */
  45 #define CMDFUNCTION 2           /* command is a shell function */
  46
  47
  48 struct cmdentry {
  49         int cmdtype;
  50         union param {
  51                 int index;
  52                 union node *func;
  53         } u;
  54 };
  55
  56
  57 extern const char *pathopt;             /* set by padvance */
  58 extern int exerrno;             /* last exec error */
  59
  60 void shellexec(char **, char **, const char *, int);
  61 char *padvance(const char **, const char *);
  62 int hashcmd(int, char **);
  63 void find_command(char *, struct cmdentry *, int, const char *);
  64 int find_builtin(char *);
  65 void hashcd(void);
  66 void changepath(const char *);
  67 void deletefuncs(void);
  68 void addcmdentry(char *, struct cmdentry *);
  69 void defun(char *, union node *);
  70 int unsetfunc(char *);
  71 int typecmd(int, char **);
  72 void clearcmdentry(int);