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Annotation of researchv10dc/cmd/oworm/scsi/readid.c, revision 1.1.1.1

1.1       root        1: #include       "scsi.h"
                      2: 
                      3: static
                      4: myread(drive, block, o)
                      5:        long block;
                      6:        struct scsi_o *o;
                      7: {
                      8:        struct scsi_i input;
                      9: 
                     10:        input.bus_id = scsi_id;
                     11:        input.cmd[0] = 0x28;
                     12:        input.cmd[1] = drive<<5;
                     13:        input.cmd[2] = block>>24;
                     14:        input.cmd[3] = block>>16;
                     15:        input.cmd[4] = block>>8;
                     16:        input.cmd[5] = block;
                     17:        input.cmd[6] = 0;
                     18:        input.cmd[7] = 0;
                     19:        input.cmd[8] = 1;
                     20:        input.cmd[9] = 0;
                     21:        if(scsiio(&input, 0, o, 1024, "readid") < 0)
                     22:                return(1);
                     23:        if(CHECK(*o))
                     24:                return(1);
                     25:        return(0);
                     26: }
                     27: 
                     28: /*
                     29:        return label, UNLABELLED or "" (error)
                     30: */
                     31: 
                     32: s_readid(drive, buf)
                     33:        char *buf;
                     34: {
                     35:        struct scsi_i input;
                     36:        struct scsi_o output;
                     37:        long b, lastb;
                     38: 
                     39:        buf[0] = 0;
                     40:        scsi_shush = 1;
                     41:        if(myread(drive, 0L, &output) == 0)
                     42:                goto done;
                     43:        for(b = 1, lastb = -1;;){
                     44:                if(myread(drive, b, &output))
                     45:                        break;
                     46:                lastb = b;
                     47:                b = ((long *)output.data)[9];
                     48:        }
                     49:        scsi_shush = 0;
                     50:        if(lastb < 0){
                     51:                s_sense(drive, 1);
                     52:                strcpy(buf, UNLABELLED);
                     53:                return;
                     54:        }
                     55:        myread(drive, lastb, &output);
                     56: done:
                     57:        strncpy(buf, (char *)&output.data[42], 128);
                     58:        buf[127] = 0;
                     59: }

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