usr/src/lib/libast/common/include/shcmd.h

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23
  24 /*
  25  * ksh builtin command api
  26  */
  27
  28 #ifndef _SHCMD_H
  29 #define _SHCMD_H        1
  30
  31 #ifndef SH_VERSION
  32 #   define Shell_t      void
  33 #endif
  34 #ifndef NV_DEFAULT
  35 #   define Namval_t     void
  36 #endif
  37 #ifndef ERROR_NOTIFY
  38 #   define ERROR_NOTIFY 1
  39 #endif
  40
  41 typedef int (*Shbltin_f)(int, char**, void*);
  42
  43 #undef Shbltin_t
  44 typedef struct Shbltin_s
  45 {
  46         Shell_t         *shp;
  47         void            *ptr;
  48         int             version;
  49         int             (*shrun)(int, char**);
  50         int             (*shtrap)(const char*, int);
  51         void            (*shexit)(int);
  52         Namval_t        *(*shbltin)(const char*, Shbltin_f, void*);
  53         unsigned char   notify;
  54         unsigned char   sigset;
  55         unsigned char   nosfio;
  56         Namval_t        *bnode;
  57         Namval_t        *vnode;
  58         char            *data;
  59         int             flags;
  60         char            *(*shgetenv)(const char*);
  61         char            *(*shsetenv)(const char*);
  62         int             invariant;
  63 } Shbltin_t;
  64
  65 #if defined(SH_VERSION) ||  defined(_SH_PRIVATE)
  66 #   undef Shell_t
  67 #   undef Namval_t
  68 #else
  69 #   define sh_context(c)        ((Shbltin_t*)(c))
  70 #   define sh_run(c, ac, av)    ((c)?(*sh_context(c)->shrun)(ac,av):-1)
  71 #   define sh_system(c,str)     ((c)?(*sh_context(c)->shtrap)(str,0):system(str))
  72 #   define sh_exit(c,n)         ((c)?(*sh_context(c)->shexit)(n):exit(n))
  73 #   define sh_checksig(c)       ((c) && sh_context(c)->sigset)
  74 #   if defined(SFIO_VERSION) || defined(_AST_H)
  75 #       define LIB_INIT(c)
  76 #   else
  77 #       define LIB_INIT(c)      ((c) && (sh_context(c)->nosfio = 1))
  78 #   endif
  79 #   ifndef _CMD_H
  80 #       define cmdinit(ac,av,c,cat,flg)         do { if((ac)<=0) return(0); \
  81             (sh_context(c)->notify = ((flg)&ERROR_NOTIFY)?1:0);} while(0)
  82 #   endif
  83 #endif
  84
  85 #if _BLD_ast && defined(__EXPORT__)
  86 #define extern          __EXPORT__
  87 #endif
  88
  89 extern int              astintercept(Shbltin_t*, int);
  90
  91 #undef  extern
  92
  93 #endif