src/kash/exec.h

   1 /*      $NetBSD: exec.h,v 1.21 2003/08/07 09:05:31 agc Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Kenneth Almquist.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)exec.h      8.3 (Berkeley) 6/8/95
  35  */
  36
  37 #ifndef ___exec_h
  38 #define ___exec_h
  39
  40 /* values of cmdtype */
  41 #define CMDUNKNOWN      -1      /* no entry in table for command */
  42 #define CMDNORMAL       0       /* command is an executable program */
  43 #define CMDFUNCTION     1       /* command is a shell function */
  44 #define CMDBUILTIN      2       /* command is a shell builtin */
  45 #define CMDSPLBLTIN     3       /* command is a special shell builtin */
  46
  47
  48 union param {
  49         struct
  50         {
  51             int index;
  52             int suffix; /* PC suffix index */
  53         } n;
  54         int (*bltin)(struct shinstance*, int, char**);
  55         union node *func;
  56 };
  57
  58 struct cmdentry {
  59         int cmdtype;
  60         union param u;
  61 };
  62
  63
  64 /* action to find_command() */
  65 #define DO_ERR          0x01    /* prints errors */
  66 #define DO_ABS          0x02    /* checks absolute paths */
  67 #define DO_NOFUNC       0x04    /* don't return shell functions, for command */
  68 #define DO_ALTPATH      0x08    /* using alternate path */
  69 #define DO_ALTBLTIN     0x20    /* %builtin in alt. path */
  70
  71 /*extern const char *pathopt;*/ /* set by padvance */
  72
  73 #if !defined(__GNUC__) && !defined(__attribute__)
  74 # define __attribute__(a)
  75 #endif
  76
  77 #ifndef SH_FORKED_MODE
  78 void subshellinitexec(shinstance *, shinstance *);
  79 #endif
  80 SH_NORETURN_1 void shellexec(struct shinstance *, char **, char **, const char *, int, int) SH_NORETURN_2;
  81 char *padvance(struct shinstance *, const char **, const char *);
  82 int hashcmd(struct shinstance *, int, char **);
  83 void find_command(struct shinstance *, char *, struct cmdentry *, int, const char *);
  84 int (*find_builtin(struct shinstance *, char *))(struct shinstance *, int, char **);
  85 int (*find_splbltin(struct shinstance *, char *))(struct shinstance *, int, char **);
  86 void hashcd(struct shinstance *);
  87 void changepath(struct shinstance *, const char *);
  88 void deletefuncs(struct shinstance *);
  89 void getcmdentry(struct shinstance *, char *, struct cmdentry *);
  90 void addcmdentry(struct shinstance *, char *, struct cmdentry *);
  91 void defun(struct shinstance *, char *, union node *);
  92 int unsetfunc(struct shinstance *, char *);
  93 int typecmd(struct shinstance *, int, char **);
  94 void hash_special_builtins(struct shinstance *);
  95
  96 #endif