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Annotation of researchv10no/cmd/worm/oscsi/generic/readt.c, revision 1.1

1.1     ! root        1: #include       <stdio.h>
        !             2: #include       "../scsi.h"
        !             3: #include       "../scsish.h"
        !             4: #include       "fns.h"
        !             5: 
        !             6: int
        !             7: gen_readt(int niargs, int *iargs, int ncargs, char **cargs, char *err)
        !             8: {
        !             9:        struct scsi_cmd cmd;
        !            10:        struct scsi_return ret;
        !            11:        int n, i;
        !            12:        unsigned long ns, ss;
        !            13:        long bs, addr;
        !            14:        long t1, t2;
        !            15: 
        !            16: #pragma ref ncargs
        !            17: #pragma ref cargs
        !            18: 
        !            19:        if(niargs == 1)
        !            20:                iargs[1] = 0;
        !            21:        set10(cmd, 0x25, iargs[1]<<5, 0, 0, 0, 0, 0, 0, 0, 0);
        !            22:        if(n = s_io(0, &cmd, 0, &ret, 8, err))
        !            23:                return(n);
        !            24:        ns = longat(&ret.data[0]);
        !            25:        ss = longat(&ret.data[4]);
        !            26:        bs = ss? sizeof(ret.data)/ss : 1;
        !            27:        time(&t1);
        !            28:        srand(t1);
        !            29:        addr = nrand(ns-iargs[0])-1;
        !            30:        printf("read(%d,%d): %d blocks @%d (chunk=%dx%d),", s_id, iargs[1], iargs[0], addr, bs, ss);
        !            31:        fflush(stdout);
        !            32:        time(&t1);
        !            33:        for(i = iargs[0]; i > 0; i -= bs){
        !            34:                set10(cmd, 0x28, iargs[1]<<5, addr>>24, addr>>16, addr>>8, addr,
        !            35:                        0, 0, bs*0, 0);
        !            36:                if(n = s_io(0, &cmd, 0, &ret, bs*ss, err))
        !            37:                        return(n);
        !            38:                addr += bs;
        !            39:        }
        !            40:        time(&t2);
        !            41:        printf(" t=%ds (%.0fKB/s)\n", t2-t1, (iargs[0]*(float)ss/1024.)/((t1 == t2)? 1:t2-t1));
        !            42:        return(0);
        !            43: }

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