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[unix-history] / usr / src / libI77 / inquire.c

#include "fio.h"
f_inqu(a) inlist *a;
{       flag byfile,legal;
       int i;
       unit *p;
       char buf[256];
       long x;
       if(a->infile!=NULL)
       {       byfile=1;
               g_char(a->infile,a->infilen,buf);
               x=inode(buf);
               for(i=0,p=NULL;i<MXUNIT;i++)
                       if(units[i].uinode==x && units[i].ufd!=NULL)
                               p = &units[i];
       }
       else
       {
               byfile=0;
               if(a->inunit<MXUNIT && a->inunit>=0)
               {       legal=1;
                       p= &units[a->inunit];
               }
               else
               {       legal=0;
                       p=NULL;
               }
       }
       if(a->inex!=NULL)
               if(byfile && x>0 || !byfile && p!=NULL)
                       *a->inex=1;
               else *a->inex=0;
       if(a->inopen!=NULL)
               if(byfile) *a->inopen=(p!=NULL);
               else *a->inopen=(p!=NULL && p->ufd!=NULL);
       if(a->innum!=NULL) *a->innum= p-units;
       if(a->innamed!=NULL)
               if(byfile || p!=NULL && p->ufnm!=NULL)
                       *a->innamed=1;
               else    *a->innamed=0;
       if(a->inname!=NULL)
               if(byfile)
                       b_char(buf,a->inname,a->innamlen);
               else if(p!=NULL && p->ufnm!=NULL)
                       b_char(p->ufnm,a->inname,a->innamlen);
       if(a->inacc!=NULL && p!=NULL && p->ufd!=NULL)
               if(p->url)
                       b_char("direct",a->inacc,a->inacclen);
               else    b_char("sequential",a->inacc,a->inacclen);
       if(a->inseq!=NULL)
               if(byfile || p!=NULL && p->useek)
                       b_char("yes",a->inseq,a->inseqlen);
               else    b_char("no",a->inseq,a->inseqlen);
       if(a->indir!=NULL)
               if(byfile || p!=NULL && p->useek)
                       b_char("yes",a->indir,a->indirlen);
               else    b_char("no",a->indir,a->indirlen);
       if(a->infmt!=NULL)
               if(p!=NULL && p->ufmt)
                       b_char("formatted",a->infmt,a->infmtlen);
               else if(p!=NULL)
                       b_char("unformatted",a->infmt,a->infmtlen);
       if(a->inform!=NULL)
               b_char("yes",a->inform,a->informlen);
       if(a->inunf)
               if(byfile || p!=NULL && p->useek)
                       b_char("yes",a->inunf,a->inunflen);
               else    b_char("unknown",a->inunf,a->inunflen);
       if(a->inrecl!=NULL && p!=NULL)
               *a->inrecl=p->url;
       if(a->innrec!=NULL && p!=NULL && p->url>0)
               *a->innrec=ftell(p->ufd)/p->url+1;
       if(a->inblank && p!=NULL && p->ufmt)
               if(p->ublnk)
                       b_char("zero",a->inblank,a->inblanklen);
               else    b_char("blank",a->inblank,a->inblanklen);
       return(0);
}