usr/src/lib/libshell/common/include/fault.h

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1982-2010 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 *                  David Korn <dgk@research.att.com>                   *
  18 *                                                                      *
  19 ***********************************************************************/
  20 #pragma prototyped
  21 #ifndef SH_SIGBITS
  22 /*
  23  *      UNIX shell
  24  *      S. R. Bourne
  25  *      Rewritten by David Korn
  26  *
  27  */
  28
  29 #include        <sig.h>
  30 #include        <setjmp.h>
  31 #include        <error.h>
  32 #include        <sfio.h>
  33 #include        "FEATURE/setjmp"
  34 #include        "FEATURE/sigfeatures"
  35
  36
  37 #ifndef SIGWINCH
  38 #   ifdef SIGWIND
  39 #       define SIGWINCH SIGWIND
  40 #   else
  41 #       ifdef SIGWINDOW
  42 #           define SIGWINCH     SIGWINDOW
  43 #       endif
  44 #   endif
  45 #endif
  46
  47 typedef void (*SH_SIGTYPE)(int,void(*)(int));
  48
  49 #define SH_FORKLIM              16      /* fork timeout interval */
  50
  51 #define SH_TRAP                 0200    /* bit for internal traps */
  52 #define SH_ERRTRAP              0       /* trap for non-zero exit status */
  53 #define SH_KEYTRAP              1       /* trap for keyboard event */
  54 #define SH_DEBUGTRAP            4       /* must be last internal trap */
  55
  56 #define SH_SIGBITS              8
  57 #define SH_SIGFAULT             1       /* signal handler is sh_fault */
  58 #define SH_SIGOFF               2       /* signal handler is SIG_IGN */
  59 #define SH_SIGSET               4       /* pending signal */
  60 #define SH_SIGTRAP              010     /* pending trap */
  61 #define SH_SIGDONE              020     /* default is exit */
  62 #define SH_SIGIGNORE            040     /* default is ingore signal */
  63 #define SH_SIGINTERACTIVE       0100    /* handle interactive specially */
  64 #define SH_SIGTSTP              0200    /* tstp signal received */
  65 #define SH_SIGALRM              0200    /* timer alarm received */
  66 #define SH_SIGTERM              SH_SIGOFF /* term signal received */
  67 #define SH_SIGRUNTIME           0400    /* runtime value */
  68
  69 #define SH_SIGRTMIN             0       /* sh.sigruntime[] index */
  70 #define SH_SIGRTMAX             1       /* sh.sigruntime[] index */
  71
  72 /*
  73  * These are longjmp values
  74  */
  75
  76 #define SH_JMPDOT       2
  77 #define SH_JMPEVAL      3
  78 #define SH_JMPTRAP      4
  79 #define SH_JMPIO        5
  80 #define SH_JMPCMD       6
  81 #define SH_JMPFUN       7
  82 #define SH_JMPERRFN     8
  83 #define SH_JMPSUB       9
  84 #define SH_JMPERREXIT   10
  85 #define SH_JMPEXIT      11
  86 #define SH_JMPSCRIPT    12
  87
  88 struct openlist
  89 {
  90         Sfio_t  *strm;
  91         struct openlist *next;
  92 };
  93
  94 struct checkpt
  95 {
  96         sigjmp_buf      buff;
  97         sigjmp_buf      *prev;
  98         int             topfd;
  99         int             mode;
 100         struct openlist *olist;
 101 #if (ERROR_VERSION >= 20030214L)
 102         Error_context_t err;
 103 #else
 104         struct errorcontext err;
 105 #endif
 106 };
 107
 108 #define sh_pushcontext(bp,n)    ( (bp)->mode=(n) , (bp)->olist=0,  \
 109                                   (bp)->topfd=sh.topfd, (bp)->prev=sh.jmplist, \
 110                                   (bp)->err = *ERROR_CONTEXT_BASE, \
 111                                         sh.jmplist = (sigjmp_buf*)(&(bp)->buff) \
 112                                 )
 113 #define sh_popcontext(bp)       (sh.jmplist=(bp)->prev, errorpop(&((bp)->err)))
 114
 115 extern void     sh_fault(int);
 116 extern void     sh_done(void*,int);
 117 extern void     sh_chktrap(void);
 118 extern void     sh_sigclear(int);
 119 extern void     sh_sigdone(void);
 120 extern void     sh_siginit(void*);
 121 extern void     sh_sigtrap(int);
 122 extern void     sh_sigreset(int);
 123 extern void     sh_timetraps(void);
 124 extern void     *sh_timeradd(unsigned long,int ,void (*)(void*),void*);
 125 extern void     timerdel(void*);
 126
 127 extern const char e_alarm[];
 128
 129 #endif /* !SH_SIGBITS */