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Annotation of 41BSD/lib/libpc/FNIL.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: 
        !             3: static char sccsid[] = "@(#)FNIL.c 1.1 10/29/80";
        !             4: 
        !             5: #include "h00vars.h"
        !             6: #include "h01errs.h"
        !             7: 
        !             8: char *
        !             9: FNIL(curfile)
        !            10: 
        !            11:        register struct iorec   *curfile;
        !            12: {
        !            13:        if (curfile->fblk >= MAXFILES || _actfile[curfile->fblk] != curfile) {
        !            14:                ERROR(ENOFILE, 0);
        !            15:                return;
        !            16:        }
        !            17:        if (curfile->funit & FDEF) {
        !            18:                ERROR(EREFINAF, curfile->pfname);
        !            19:                return;
        !            20:        }
        !            21:        if (curfile->funit & FREAD) {
        !            22:                IOSYNC(curfile);
        !            23:                if (curfile->funit & EOFF) {
        !            24:                        ERROR(EPASTEOF, curfile->pfname);
        !            25:                        return;
        !            26:                }
        !            27:        }
        !            28:        return curfile->fileptr;
        !            29: }

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