external/bsd/pcc/dist/pcc-libs/libI77/err.c

   1 /*      $Id: err.c,v 1.1.1.1 2008/08/24 05:34:47 gmcgarry Exp $ */
   2 /*
   3  * Copyright(C) Caldera International Inc. 2001-2002. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * Redistributions of source code and documentation must retain the above
  10  * copyright notice, this list of conditions and the following disclaimer.
  11  * Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditionsand the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
  14  * All advertising materials mentioning features or use of this software
  15  * must display the following acknowledgement:
  16  *      This product includes software developed or owned by Caldera
  17  *      International, Inc.
  18  * Neither the name of Caldera International, Inc. nor the names of other
  19  * contributors may be used to endorse or promote products derived from
  20  * this software without specific prior written permission.
  21  *
  22  * USE OF THE SOFTWARE PROVIDED FOR UNDER THIS LICENSE BY CALDERA
  23  * INTERNATIONAL, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  25  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  26  * DISCLAIMED.  IN NO EVENT SHALL CALDERA INTERNATIONAL, INC. BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OFLIABILITY, WHETHER IN CONTRACT,
  31  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  32  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41
  42 #include "fio.h"
  43
  44 #define STR(x) (x==NULL?"":x)
  45
  46 /*global definitions*/
  47 unit units[MXUNIT];     /*unit table*/
  48 flag init;      /*0 on entry, 1 after initializations*/
  49 cilist *elist;  /*active external io list*/
  50 flag reading;   /*1 if reading, 0 if writing*/
  51 flag cplus,cblank;
  52 char *fmtbuf;
  53 flag external;  /*1 if external io, 0 if internal */
  54 int (*doed)(struct syl *p, void *ptr, ftnlen len);
  55 int (*doend)(void),(*donewrec)(void),(*dorevert)(void);
  56 flag sequential;        /*1 if sequential io, 0 if direct*/
  57 flag formatted; /*1 if formatted io, 0 if unformatted*/
  58 int (*getn)(void),(*putn)(int); /*for formatted io*/
  59 FILE *cf;       /*current file*/
  60 unit *curunit;  /*current unit*/
  61 int recpos;     /*place in current record*/
  62 int cursor,scale;
  63
  64 int canseek(FILE *f);
  65
  66 /*error messages*/
  67 char *F_err[] =
  68 {
  69         "error in format",
  70         "illegal unit number",
  71         "formatted io not allowed",
  72         "unformatted io not allowed",
  73         "direct io not allowed",
  74         "sequential io not allowed",
  75         "can't backspace file",
  76         "null file name",
  77         "can't stat file",
  78         "unit not connected",
  79         "off end of record",
  80         "truncation failed in endfile",
  81         "incomprehensible list input",
  82         "out of free space",
  83         "unit not connected",
  84         "read unexpected character",
  85         "blank logical input field",
  86 };
  87 #define MAXERR (sizeof(F_err)/sizeof(char *)+100)
  88
  89 void
  90 fatal(int n, char *s)
  91 {
  92         if(n<100 && n>=0) perror(s); /*SYSDEP*/
  93         else if(n>=(int)MAXERR)
  94         {       fprintf(stderr,"%s: illegal error number %d\n",s,n);
  95         }
  96         else if(n<0) fprintf(stderr,"%s: end of file %d\n",s,n);
  97         else
  98                 fprintf(stderr,"%s: %s\n",s,F_err[n-100]);
  99         fprintf(stderr,"apparent state: unit %d named %s\n",curunit-units,
 100                 STR(curunit->ufnm));
 101         fprintf(stderr,"last format: %s\n",STR(fmtbuf));
 102         fprintf(stderr,"lately %s %s %s %s IO\n",reading?"reading":"writing",
 103                 sequential?"sequential":"direct",formatted?"formatted":"unformatted",
 104                 external?"external":"internal");
 105         abort();
 106 }
 107
 108 /*initialization routine*/
 109 void
 110 f_init()
 111 {       unit *p;
 112         init=1;
 113         p= &units[0];
 114         p->ufd=stderr;
 115         p->useek=canseek(stderr);
 116         p->ufmt=1;
 117         p->uwrt=1;
 118         p = &units[5];
 119         p->ufd=stdin;
 120         p->useek=canseek(stdin);
 121         p->ufmt=1;
 122         p->uwrt=0;
 123         p= &units[6];
 124         p->ufd=stdout;
 125         p->useek=canseek(stdout);
 126         p->ufmt=1;
 127         p->uwrt=1;
 128 }
 129
 130 int
 131 canseek(FILE *f) /*SYSDEP*/
 132 {       struct stat x;
 133         fstat(fileno(f),&x);
 134         if(x.st_nlink > 0 /*pipe*/ && !isatty(fileno(f)))
 135         {
 136                 return(1);
 137         }
 138         return(0);
 139 }
 140
 141 int
 142 nowreading(unit *x)
 143 {
 144         long loc;
 145         x->uwrt=0;
 146         loc=ftell(x->ufd);
 147         freopen(x->ufnm,"r",x->ufd);
 148         return fseek(x->ufd,loc,0);
 149 }
 150
 151 int
 152 nowwriting(x) unit *x;
 153 {
 154         long loc;
 155         loc=ftell(x->ufd);
 156         x->uwrt=1;
 157         freopen(x->ufnm,"a",x->ufd);
 158         return fseek(x->ufd,loc,0);
 159 }