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Annotation of 40BSD/lib/libpc/RESET.c, revision 1.1.1.1

1.1       root        1: /* Copyright (c) 1979 Regents of the University of California */
                      2: 
                      3: static char sccsid[] = "@(#)RESET.c 1.1 10/29/80";
                      4: 
                      5: #include "h00vars.h"
                      6: #include "h01errs.h"
                      7: 
                      8: RESET(filep, name, maxnamlen, datasize)
                      9: 
                     10:        register struct iorec   *filep;
                     11:        char                    *name;
                     12:        int                     maxnamlen;
                     13:        int                     datasize;
                     14: {
                     15:        if (name == NULL && filep == INPUT && filep->fname[0] == '\0') {
                     16:                if (rewind(filep->fbuf)) {
                     17:                        ERROR(ESEEK, filep->pfname);
                     18:                        return;
                     19:                }
                     20:                filep->funit &= ~(EOFF | EOLN);
                     21:                filep->funit |= SYNC;
                     22:                return;
                     23:        }
                     24:        filep = GETNAME(filep, name, maxnamlen, datasize);
                     25:        filep->fbuf = fopen(filep->fname, "r");
                     26:        if (filep->fbuf == NULL) {
                     27:                if (filep->funit & TEMP) {
                     28:                        filep->funit |= (EOFF | SYNC | FREAD);
                     29:                        return;
                     30:                }
                     31:                ERROR(EOPEN, filep->pfname);
                     32:                return;
                     33:        }
                     34:        filep->funit |= (SYNC | FREAD);
                     35:        if (filep->fblk > PREDEF) {
                     36:                setbuf(filep->fbuf, &filep->buf[0]);
                     37:        }
                     38: }

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