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 1.15 2006/04/09 12:21:20 stefanf Exp $
  38  * $DragonFly: src/bin/sh/exec.h,v 1.5 2007/01/07 01:14:53 pavalos 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 /* values for typecmd_impl's third parameter */
  48 enum {
  49         TYPECMD_SMALLV,         /* command -v */
  50         TYPECMD_BIGV,           /* command -V */
  51         TYPECMD_TYPE            /* type */
  52 };
  53
  54 struct cmdentry {
  55         int cmdtype;
  56         union param {
  57                 int index;
  58                 union node *func;
  59         } u;
  60         int special;
  61 };
  62
  63
  64 extern const char *pathopt;             /* set by padvance */
  65 extern int exerrno;             /* last exec error */
  66
  67 void shellexec(char **, char **, const char *, int);
  68 char *padvance(const char **, const char *);
  69 int hashcmd(int, char **);
  70 void find_command(char *, struct cmdentry *, int, const char *);
  71 int find_builtin(char *, int *);
  72 void hashcd(void);
  73 void changepath(const char *);
  74 void deletefuncs(void);
  75 void addcmdentry(char *, struct cmdentry *);
  76 void defun(char *, union node *);
  77 int unsetfunc(char *);
  78 int typecmd_impl(int, char **, int);
  79 int typecmd(int, char **);
  80 void clearcmdentry(int);