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Annotation of researchv9/libc/fio/fioseek.c, revision 1.1

1.1     ! root        1: #define        FIO_IMP
        !             2: #include       "fio.h"
        !             3: #include       <libc.h>
        !             4: 
        !             5: long
        !             6: Fseek(fd, n, cmd)
        !             7:        long n;
        !             8: {
        !             9:        register Fbuffer *f;
        !            10:        register long dest, k;
        !            11: 
        !            12:        FIOSET(f, fd);
        !            13:        dest = SEEK(fd, n, cmd);
        !            14:        if(dest < 0)
        !            15:                return(dest);
        !            16:        k = f->end-f->lnext;
        !            17:        if((dest >= f->offset) || (dest < f->offset-k)){
        !            18:                FIORESET(f);
        !            19:                f->offset = dest;
        !            20:        } else {
        !            21:                f->next = f->lnext + (dest-(f->offset-k));
        !            22:                SEEK(fd, f->offset, 0);
        !            23:        }
        !            24:        return(dest);
        !            25: }

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