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 94