#include "scsireq.h"

#include <u.h>
#include <libc.h>
#include <bio.h>

#include "scsireq.h"

enum { /* fundamental constants/defaults */
/*
* default & maximum `maximum i/o size'; overridden by -m.
* limits kernel memory consumption.
* 240K is exabyte maximum block size.
*/
MaxIOsize = 240*1024,
};

#define MIN(a, b) ((a) < (b) ? (a): (b))

static char rwbuf[MaxIOsize];
static int verbose = 1;

Biobuf bin, bout;
long maxiosize = MaxIOsize;
int exabyte = 0;
int force6bytecmds = 0;

typedef struct {
char *name;
long (*f)(ScsiReq *, int, char *[]);
int open;
char *help;
} ScsiCmd;

static ScsiCmd scsicmd[];

static vlong
vlmin(vlong a, vlong b)
{
if (a < b)
return a;
else
return b;
}

static long
cmdready(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRready(rp);
}

static long
cmdrewind(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRrewind(rp);
}

static long
cmdreqsense(ScsiReq *rp, int argc, char *argv[])
{
long nbytes;

USED(argc, argv);
if((nbytes = SRreqsense(rp)) != -1)
makesense(rp);
return nbytes;
}

static long
cmdformat(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRformat(rp);
}

static long
cmdrblimits(ScsiReq *rp, int argc, char *argv[])
{
uchar l[6];
long n;

USED(argc, argv);
if((n = SRrblimits(rp, l)) == -1)
return -1;
Bprint(&bout, " %2.2uX %2.2uX %2.2uX %2.2uX %2.2uX %2.2uX\n",
l[0], l[1], l[2], l[3], l[4], l[5]);
return n;
}

static int
mkfile(char *file, int omode, int *pid)
{
int fd[2];

if(*file != '|'){
*pid = -1;
if(omode == OWRITE)
return create(file, OWRITE, 0666);
else if(omode == OREAD)
return open(file, OREAD);
return -1;
}

file++;
if(*file == 0 || pipe(fd) == -1)
return -1;
if((*pid = fork()) == -1){
close(fd[0]);
close(fd[1]);
return -1;
}
if(*pid == 0){
switch(omode){

case OREAD:
dup(fd[0], 1);
break;

case OWRITE:
dup(fd[0], 0);
break;
}
close(fd[0]);
close(fd[1]);
execl("/bin/rc", "rc", "-c", file, nil);
exits("exec");
}
close(fd[0]);
return fd[1];
}

int
waitfor(int pid)
{
int msg;
Waitmsg *w;

while((w = wait()) != nil){
if(w->pid != pid){
free(w);
continue;
}
msg = (w->msg[0] != '\0');
free(w);
return msg;
}
return -1;
}

static long
cmdread(ScsiReq *rp, int argc, char *argv[])
{
long n, iosize, prevsize = 0;
vlong nbytes, total;
int fd, pid;
char *p;

iosize = maxiosize;
nbytes = ~0ULL >> 1;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
nbytes = strtoll(argv[1], &p, 0);
if(nbytes == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((fd = mkfile(argv[0], OWRITE, &pid)) == -1){
rp->status = Status_BADARG;
return -1;
}
break;
}
print("device native block size=%lud\n", rp->lbsize);
total = 0;
while(nbytes){
n = vlmin(nbytes, iosize);
if((n = SRread(rp, rwbuf, n)) == -1){
if(total == 0)
total = -1;
break;
}
if (n == 0)
break;
if (prevsize != n) {
print("tape block size=%ld\n", n);
prevsize = n;
}
if(write(fd, rwbuf, n) != n){
if(total == 0)
total = -1;
if(rp->status == STok)
rp->status = Status_SW;
break;
}
nbytes -= n;
total += n;
}
close(fd);
if(pid >= 0 && waitfor(pid)){
rp->status = Status_SW;
return -1;
}
return total;
}

static long
cmdwrite(ScsiReq *rp, int argc, char *argv[])
{
long n, prevsize = 0;
vlong nbytes, total;
int fd, pid;
char *p;

nbytes = ~0ULL >> 1;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
nbytes = strtoll(argv[1], &p, 0);
if(nbytes == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((fd = mkfile(argv[0], OREAD, &pid)) == -1){
rp->status = Status_BADARG;
return -1;
}
break;
}
total = 0;
while(nbytes){
n = vlmin(nbytes, maxiosize);
if((n = read(fd, rwbuf, n)) == -1){
if(total == 0)
total = -1;
break;
}
if (n == 0)
break;
if (prevsize != n) {
print("tape block size=%ld\n", n);
prevsize = n;
}
if(SRwrite(rp, rwbuf, n) != n){
if(total == 0)
total = -1;
if(rp->status == STok)
rp->status = Status_SW;
break;
}
nbytes -= n;
total += n;
}
close(fd);
if(pid >= 0 && waitfor(pid)){
rp->status = Status_SW;
return -1;
}
return total;
}

static long
cmdseek(ScsiReq *rp, int argc, char *argv[])
{
char *p;
long offset;
int type;

type = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if((type = strtol(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((offset = strtol(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
break;
}
return SRseek(rp, offset, type);
}

static long
cmdfilemark(ScsiReq *rp, int argc, char *argv[])
{
char *p;
ulong howmany;

howmany = 1;
if(argc && (howmany = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
return SRfilemark(rp, howmany);
}

static long
cmdspace(ScsiReq *rp, int argc, char *argv[])
{
uchar code;
long howmany;
char option, *p;

code = 0x00;
howmany = 1;
while(argc && (*argv)[0] == '-'){
while(option = *++argv[0]){
switch(option){

case '-':
break;

case 'b':
code = 0x00;
break;

case 'f':
code = 0x01;
break;

default:
rp->status = Status_BADARG;
return -1;
}
break;
}
argc--; argv++;
if(option == '-')
break;
}
if(argc && ((howmany = strtol(argv[0], &p, 0)) == 0 && p == argv[0])){
rp->status = Status_BADARG;
return -1;
}
return SRspace(rp, code, howmany);
}

static long
cmdinquiry(ScsiReq *rp, int argc, char *argv[])
{
long status;
int i, n;
uchar *p;

USED(argc, argv);
if((status = SRinquiry(rp)) != -1){
n = rp->inquiry[4]+4;
for(i = 0; i < MIN(8, n); i++)
Bprint(&bout, " %2.2uX", rp->inquiry[i]);
p = &rp->inquiry[8];
n = MIN(n, sizeof(rp->inquiry)-8);
while(n && (*p == ' ' || *p == '\t' || *p == '\n')){
n--;
p++;
}
Bprint(&bout, "\t%.*s\n", n, (char*)p);
}
return status;
}

static long
cmdmodeselect6(ScsiReq *rp, int argc, char *argv[])
{
uchar list[MaxDirData];
long nbytes, ul;
char *p;

memset(list, 0, sizeof list);
for(nbytes = 0; argc; argc--, argv++, nbytes++){
if((ul = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
list[nbytes] = ul;

}
if(!(rp->flags & Finqok) && SRinquiry(rp) == -1)
Bprint(&bout, "warning: couldn't determine whether SCSI-1/SCSI-2 mode");
return SRmodeselect6(rp, list, nbytes);
}

static long
cmdmodeselect10(ScsiReq *rp, int argc, char *argv[])
{
uchar list[MaxDirData];
long nbytes, ul;
char *p;

memset(list, 0, sizeof list);
for(nbytes = 0; argc; argc--, argv++, nbytes++){
if((ul = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
list[nbytes] = ul;

}
if(!(rp->flags & Finqok) && SRinquiry(rp) == -1)
Bprint(&bout, "warning: couldn't determine whether SCSI-1/SCSI-2 mode");
return SRmodeselect10(rp, list, nbytes);
}

static long
cmdmodesense6(ScsiReq *rp, int argc, char *argv[])
{
uchar list[MaxDirData], *lp, page;
long i, n, nbytes, status;
char *p;

nbytes = sizeof list;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if((nbytes = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((page = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
break;

case 0:
page = Allmodepages;
break;
}
if((status = SRmodesense6(rp, page, list, nbytes)) == -1)
return -1;
lp = list;
nbytes = list[0];
Bprint(&bout, " Header\n ");
for(i = 0; i < 4; i++){ /* header */
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
Bputc(&bout, '\n');

if(list[3]){ /* block descriptors */
for(n = 0; n < list[3]/8; n++){
Bprint(&bout, " Block %ld\n ", n);
for(i = 0; i < 8; i++)
Bprint(&bout, " %2.2uX", lp[i]);
Bprint(&bout, " (density %2.2uX", lp[0]);
Bprint(&bout, " blocks %d", (lp[1]<<16)|(lp[2]<<8)|lp[3]);
Bprint(&bout, " length %d)", (lp[5]<<16)|(lp[6]<<8)|lp[7]);
lp += 8;
nbytes -= 8;
Bputc(&bout, '\n');
}
}

while(nbytes > 0){ /* pages */
i = *(lp+1);
nbytes -= i+2;
Bprint(&bout, " Page %2.2uX %d\n ", *lp & 0x3F, *(lp+1));
lp += 2;
for(n = 0; n < i; n++){
if(n && ((n & 0x0F) == 0))
Bprint(&bout, "\n ");
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
if(n && (n & 0x0F))
Bputc(&bout, '\n');
}
return status;
}

static long
cmdmodesense10(ScsiReq *rp, int argc, char *argv[])
{
uchar *list, *lp, page;
long blen, i, n, nbytes, status;
char *p;

nbytes = MaxDirData;
switch(argc){
default:
rp->status = Status_BADARG;
return -1;

case 2:
if((nbytes = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/
case 1:
if((page = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
break;

case 0:
page = Allmodepages;
break;
}
list = malloc(nbytes);
if(list == 0){
rp->status = STnomem;
return -1;
}
if((status = SRmodesense10(rp, page, list, nbytes)) == -1)
return -1;
lp = list;
nbytes = ((list[0]<<8)|list[1]);
Bprint(&bout, " Header\n ");
for(i = 0; i < 8; i++){ /* header */
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
Bputc(&bout, '\n');

blen = (list[6]<<8)|list[7];
if(blen){ /* block descriptors */
for(n = 0; n < blen/8; n++){
Bprint(&bout, " Block %ld\n ", n);
for(i = 0; i < 8; i++)
Bprint(&bout, " %2.2uX", lp[i]);
Bprint(&bout, " (density %2.2uX", lp[0]);
Bprint(&bout, " blocks %d", (lp[1]<<16)|(lp[2]<<8)|lp[3]);
Bprint(&bout, " length %d)", (lp[5]<<16)|(lp[6]<<8)|lp[7]);
lp += 8;
nbytes -= 8;
Bputc(&bout, '\n');
}
}

/*
* Special for ATA drives, page 0 is the drive info in 16-bit
* chunks, little-endian, 256 in total. No decoding for now.
*/
if(page == 0){
for(n = 0; n < nbytes; n += 2){
if(n && ((n & 0x1F) == 0))
Bprint(&bout, "\n");
Bprint(&bout, " %4.4uX", (*(lp+1)<<8)|*lp);
lp += 2;
}
Bputc(&bout, '\n');
}
else
while(nbytes > 0){ /* pages */
i = *(lp+1);
nbytes -= i+2;
Bprint(&bout, " Page %2.2uX %d\n ", *lp & 0x3F, lp[1]);
lp += 2;
for(n = 0; n < i; n++){
if(n && ((n & 0x0F) == 0))
Bprint(&bout, "\n ");
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
if(n && (n & 0x0F))
Bputc(&bout, '\n');
}
free(list);
return status;
}

static long
start(ScsiReq *rp, int argc, char *argv[], uchar code)
{
char *p;

if(argc && (code = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
return SRstart(rp, code);
}

static long
cmdstart(ScsiReq *rp, int argc, char *argv[])
{
return start(rp, argc, argv, 1);
}

static long
cmdstop(ScsiReq *rp, int argc, char *argv[])
{
return start(rp, argc, argv, 0);
}

static long
cmdeject(ScsiReq *rp, int argc, char *argv[])
{
return start(rp, argc, argv, 2);
}

static long
cmdingest(ScsiReq *rp, int argc, char *argv[])
{
return start(rp, argc, argv, 3);
}

static long
cmdcapacity(ScsiReq *rp, int argc, char *argv[])
{
uchar d[8];
long n;

USED(argc, argv);
if((n = SRrcapacity(rp, d)) == -1)
return -1;
Bprint(&bout, " %ud %ud\n",
d[0]<<24|d[1]<<16|d[2]<<8|d[3],
d[4]<<24|d[5]<<16|d[6]<<8|d[7]);
return n;
}

static long
cmdblank(ScsiReq *rp, int argc, char *argv[])
{
uchar type, track;
char *sp;

type = track = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if((type = strtoul(argv[1], &sp, 0)) == 0 && sp == argv[1]){
rp->status = Status_BADARG;
return -1;
}
if(type > 6){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((track = strtoul(argv[0], &sp, 0)) == 0 && sp == argv[0]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 0:
break;
}
return SRblank(rp, type, track);
}

static long
cmdsynccache(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRsynccache(rp);
}

static long
cmdrtoc(ScsiReq *rp, int argc, char *argv[])
{
uchar d[100*8+4], format, track, *p;
char *sp;
long n, nbytes;
int tdl;

format = track = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if((format = strtoul(argv[1], &sp, 0)) == 0 && sp == argv[1]){
rp->status = Status_BADARG;
return -1;
}
if(format > 4){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((track = strtoul(argv[0], &sp, 0)) == 0 && sp == argv[0]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 0:
break;
}
if((nbytes = SRTOC(rp, d, sizeof d, format, track)) == -1){
if(rp->status == STok)
Bprint(&bout, "\t(probably empty)\n");
return -1;
}
tdl = (d[0]<<8)|d[1];
switch(format){

case 0:
Bprint(&bout, "\ttoc/pma data length: 0x%uX\n", tdl);
Bprint(&bout, "\tfirst track number: %d\n", d[2]);
Bprint(&bout, "\tlast track number: %d\n", d[3]);
for(p = &d[4], n = tdl-2; n; n -= 8, p += 8){
Bprint(&bout, "\ttrack number: 0x%2.2uX\n", p[2]);
Bprint(&bout, "\t\tcontrol: 0x%2.2uX\n", p[1] & 0x0F);
Bprint(&bout, "\t\tblock address: 0x%uX\n",
(p[4]<<24)|(p[5]<<16)|(p[6]<<8)|p[7]);
}
break;

case 1:
Bprint(&bout, "\tsessions data length: 0x%uX\n", tdl);
Bprint(&bout, "\tnumber of finished sessions: %d\n", d[2]);
Bprint(&bout, "\tunfinished session number: %d\n", d[3]);
for(p = &d[4], n = tdl-2; n; n -= 8, p += 8){
Bprint(&bout, "\tsession number: 0x%2.2uX\n", p[0]);
Bprint(&bout, "\t\tfirst track number in session: 0x%2.2uX\n",
p[2]);
Bprint(&bout, "\t\tlogical start address: 0x%uX\n",
(p[5]<<16)|(p[6]<<8)|p[7]);
}
break;

case 2:
Bprint(&bout, "\tfull TOC data length: 0x%uX\n", tdl);
Bprint(&bout, "\tnumber of finished sessions: %d\n", d[2]);
Bprint(&bout, "\tunfinished session number: %d\n", d[3]);
for(p = &d[4], n = tdl-2; n > 0; n -= 11, p += 11){
Bprint(&bout, "\tsession number: 0x%2.2uX\n", p[0]);
Bprint(&bout, "\t\tcontrol: 0x%2.2uX\n", p[1] & 0x0F);
Bprint(&bout, "\t\tADR: 0x%2.2uX\n", (p[1]>>4) & 0x0F);
Bprint(&bout, "\t\tTNO: 0x%2.2uX\n", p[2]);
Bprint(&bout, "\t\tPOINT: 0x%2.2uX\n", p[3]);
Bprint(&bout, "\t\tMin: 0x%2.2uX\n", p[4]);
Bprint(&bout, "\t\tSec: 0x%2.2uX\n", p[5]);
Bprint(&bout, "\t\tFrame: 0x%2.2uX\n", p[6]);
Bprint(&bout, "\t\tZero: 0x%2.2uX\n", p[7]);
Bprint(&bout, "\t\tPMIN: 0x%2.2uX\n", p[8]);
Bprint(&bout, "\t\tPSEC: 0x%2.2uX\n", p[9]);
Bprint(&bout, "\t\tPFRAME: 0x%2.2uX\n", p[10]);
}
break;
case 3:
Bprint(&bout, "\tPMA data length: 0x%uX\n", tdl);
for(p = &d[4], n = tdl-2; n > 0; n -= 11, p += 11){
Bprint(&bout, "\t\tcontrol: 0x%2.2uX\n", p[1] & 0x0F);
Bprint(&bout, "\t\tADR: 0x%2.2uX\n", (p[1]>>4) & 0x0F);
Bprint(&bout, "\t\tTNO: 0x%2.2uX\n", p[2]);
Bprint(&bout, "\t\tPOINT: 0x%2.2uX\n", p[3]);
Bprint(&bout, "\t\tMin: 0x%2.2uX\n", p[4]);
Bprint(&bout, "\t\tSec: 0x%2.2uX\n", p[5]);
Bprint(&bout, "\t\tFrame: 0x%2.2uX\n", p[6]);
Bprint(&bout, "\t\tZero: 0x%2.2uX\n", p[7]);
Bprint(&bout, "\t\tPMIN: 0x%2.2uX\n", p[8]);
Bprint(&bout, "\t\tPSEC: 0x%2.2uX\n", p[9]);
Bprint(&bout, "\t\tPFRAME: 0x%2.2uX\n", p[10]);
}
break;

case 4:
Bprint(&bout, "\tATIP data length: 0x%uX\n", tdl);
break;

}
for(n = 0; n < nbytes; n++){
if(n && ((n & 0x0F) == 0))
Bprint(&bout, "\n");
Bprint(&bout, " %2.2uX", d[n]);
}
if(n && (n & 0x0F))
Bputc(&bout, '\n');
return nbytes;
}

static long
cmdrdiscinfo(ScsiReq *rp, int argc, char*[])
{
uchar d[MaxDirData];
int dl;
long n, nbytes;

switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 0:
break;
}
if((nbytes = SRrdiscinfo(rp, d, sizeof d)) == -1)
return -1;

dl = (d[0]<<8)|d[1];
Bprint(&bout, "\tdata length: 0x%uX\n", dl);
Bprint(&bout, "\tinfo[2] 0x%2.2uX\n", d[2]);
switch(d[2] & 0x03){

case 0:
Bprint(&bout, "\t\tEmpty\n");
break;

case 1:
Bprint(&bout, "\t\tIncomplete disc (Appendable)\n");
break;

case 2:
Bprint(&bout, "\t\tComplete (CD-ROM or last session is closed and has no next session pointer)\n");
break;

case 3:
Bprint(&bout, "\t\tReserved\n");
break;
}
switch((d[2]>>2) & 0x03){

case 0:
Bprint(&bout, "\t\tEmpty Session\n");
break;

case 1:
Bprint(&bout, "\t\tIncomplete Session\n");
break;

case 2:
Bprint(&bout, "\t\tReserved\n");
break;

case 3:
Bprint(&bout, "\t\tComplete Session (only possible when disc Status is Complete)\n");
break;
}
if(d[2] & 0x10)
Bprint(&bout, "\t\tErasable\n");
Bprint(&bout, "\tNumber of First Track on Disc %ud\n", d[3]);
Bprint(&bout, "\tNumber of Sessions %ud\n", d[4]);
Bprint(&bout, "\tFirst Track Number in Last Session %ud\n", d[5]);
Bprint(&bout, "\tLast Track Number in Last Session %ud\n", d[6]);
Bprint(&bout, "\tinfo[7] 0x%2.2uX\n", d[7]);
if(d[7] & 0x20)
Bprint(&bout, "\t\tUnrestricted Use Disc\n");
if(d[7] & 0x40)
Bprint(&bout, "\t\tDisc Bar Code Valid\n");
if(d[7] & 0x80)
Bprint(&bout, "\t\tDisc ID Valid\n");
Bprint(&bout, "\tinfo[8] 0x%2.2uX\n", d[8]);
switch(d[8]){

case 0x00:
Bprint(&bout, "\t\tCD-DA or CD-ROM Disc\n");
break;

case 0x10:
Bprint(&bout, "\t\tCD-I Disc\n");
break;

case 0x20:
Bprint(&bout, "\t\tCD-ROM XA Disc\n");
break;

case 0xFF:
Bprint(&bout, "\t\tUndefined\n");
break;

default:
Bprint(&bout, "\t\tReserved\n");
break;
}
Bprint(&bout, "\tLast Session lead-in Start Time M/S/F: 0x%2.2uX/0x%2.2uX/0x%2.2uX\n",
d[17], d[18], d[19]);
Bprint(&bout, "\tLast Possible Start Time for Start of lead-out M/S/F: 0x%2.2uX/0x%2.2uX/0x%2.2uX\n",
d[21], d[22], d[23]);

for(n = 0; n < nbytes; n++){
if(n && ((n & 0x0F) == 0))
Bprint(&bout, "\n");
Bprint(&bout, " %2.2uX", d[n]);
}
if(n && (n & 0x0F))
Bputc(&bout, '\n');

return nbytes;
}

static long
cmdrtrackinfo(ScsiReq *rp, int argc, char *argv[])
{
uchar d[MaxDirData], track;
char *sp;
long n, nbytes;
int dl;

track = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 1:
if((track = strtoul(argv[0], &sp, 0)) == 0 && sp == argv[0]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 0:
break;
}
if((nbytes = SRrtrackinfo(rp, d, sizeof d, track)) == -1)
return -1;

dl = (d[0]<<8)|d[1];
Bprint(&bout, "\tdata length: 0x%uX\n", dl);
Bprint(&bout, "\Track Number %d\n", d[2]);
Bprint(&bout, "\Session Number %d\n", d[3]);
Bprint(&bout, "\tinfo[4] 0x%2.2uX\n", d[5]);
Bprint(&bout, "\t\tTrack Mode 0x%2.2uX: ", d[5] & 0x0F);
switch(d[5] & 0x0F){
case 0x00:
case 0x02:
Bprint(&bout, "2 audio channels without pre-emphasis\n");
break;
case 0x01:
case 0x03:
Bprint(&bout, "2 audio channels with pre-emphasis of 50/15µs\n");
break;
case 0x08:
case 0x0A:
Bprint(&bout, "audio channels without pre-emphasis (reserved in CD-R/RW)\n");
break;
case 0x09:
case 0x0B:
Bprint(&bout, "audio channels with pre-emphasis of 50/15µs (reserved in CD-R/RW)\n");
break;
case 0x04:
case 0x06:
Bprint(&bout, "Data track, recorded uninterrupted\n");
break;
case 0x05:
case 0x07:
Bprint(&bout, "Data track, recorded incremental\n");
break;
default:
Bprint(&bout, "(mode unknown)\n");
break;
}
if(d[5] & 0x10)
Bprint(&bout, "\t\tCopy\n");
if(d[5] & 0x20)
Bprint(&bout, "\t\tDamage\n");
Bprint(&bout, "\tinfo[6] 0x%2.2uX\n", d[6]);
Bprint(&bout, "\t\tData Mode 0x%2.2uX: ", d[6] & 0x0F);
switch(d[6] & 0x0F){
case 0x01:
Bprint(&bout, "Mode 1 (ISO/IEC 10149)\n");
break;
case 0x02:
Bprint(&bout, "Mode 2 (ISO/IEC 10149 or CD-ROM XA)\n");
break;
case 0x0F:
Bprint(&bout, "Data Block Type unknown (no track descriptor block)\n");
break;
default:
Bprint(&bout, "(Reserved)\n");
break;
}
if(d[6] & 0x10)
Bprint(&bout, "\t\tFP\n");
if(d[6] & 0x20)
Bprint(&bout, "\t\tPacket\n");
if(d[6] & 0x40)
Bprint(&bout, "\t\tBlank\n");
if(d[6] & 0x80)
Bprint(&bout, "\t\tRT\n");
Bprint(&bout, "\tTrack Start Address 0x%8.8uX\n",
(d[8]<<24)|(d[9]<<16)|(d[10]<<8)|d[11]);
if(d[7] & 0x01)
Bprint(&bout, "\tNext Writeable Address 0x%8.8uX\n",
(d[12]<<24)|(d[13]<<16)|(d[14]<<8)|d[15]);
Bprint(&bout, "\tFree Blocks 0x%8.8uX\n",
(d[16]<<24)|(d[17]<<16)|(d[18]<<8)|d[19]);
if((d[6] & 0x30) == 0x30)
Bprint(&bout, "\tFixed Packet Size 0x%8.8uX\n",
(d[20]<<24)|(d[21]<<16)|(d[22]<<8)|d[23]);
Bprint(&bout, "\tTrack Size 0x%8.8uX\n",
(d[24]<<24)|(d[25]<<16)|(d[26]<<8)|d[27]);

for(n = 0; n < nbytes; n++){
if(n && ((n & 0x0F) == 0))
Bprint(&bout, "\n");
Bprint(&bout, " %2.2uX", d[n]);
}
if(n && (n & 0x0F))
Bputc(&bout, '\n');

return nbytes;
}

static long
cmdcdpause(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRcdpause(rp, 0);
}

static long
cmdcdresume(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRcdpause(rp, 1);
}

static long
cmdcdstop(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRcdstop(rp);
}

static long
cmdcdplay(ScsiReq *rp, int argc, char *argv[])
{
long length, start;
char *sp;
int raw;

raw = 0;
start = 0;
if(argc && strcmp("-r", argv[0]) == 0){
raw = 1;
argc--, argv++;
}

length = 0xFFFFFFFF;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if(!raw || ((length = strtol(argv[1], &sp, 0)) == 0 && sp == argv[1])){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((start = strtol(argv[0], &sp, 0)) == 0 && sp == argv[0]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 0:
break;
}

return SRcdplay(rp, raw, start, length);
}

static long
cmdcdload(ScsiReq *rp, int argc, char *argv[])
{
char *p;
ulong slot;

slot = 0;
if(argc && (slot = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
return SRcdload(rp, 1, slot);
}

static long
cmdcdunload(ScsiReq *rp, int argc, char *argv[])
{
char *p;
ulong slot;

slot = 0;
if(argc && (slot = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
return SRcdload(rp, 0, slot);
}

static long
cmdcdstatus(ScsiReq *rp, int argc, char *argv[])
{
uchar *list, *lp;
long nbytes, status;
int i, slots;

USED(argc, argv);

nbytes = 4096;
list = malloc(nbytes);
if(list == 0){
rp->status = STnomem;
return -1;
}
status = SRcdstatus(rp, list, nbytes);
if(status == -1){
free(list);
return -1;
}

lp = list;
Bprint(&bout, " Header\n ");
for(i = 0; i < 8; i++){ /* header */
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
Bputc(&bout, '\n');

slots = ((list[6]<<8)|list[7])/4;
Bprint(&bout, " Slots\n ");
while(slots--){
Bprint(&bout, " %2.2uX %2.2uX %2.2uX %2.2uX\n ",
*lp, *(lp+1), *(lp+2), *(lp+3));
lp += 4;
}

free(list);
return status;
}

static long
cmdgetconf(ScsiReq *rp, int argc, char *argv[])
{
uchar *list;
long nbytes, status;

USED(argc, argv);

nbytes = 4096;
list = malloc(nbytes);
if(list == 0){
rp->status = STnomem;
return -1;
}
status = SRgetconf(rp, list, nbytes);
if(status == -1){
free(list);
return -1;
}
/* to be done... */
free(list);
return status;
}

static long
cmdfwaddr(ScsiReq *rp, int argc, char *argv[])
{
uchar d[MaxDirData], npa, track, mode;
long n;
char *p;

npa = mode = track = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 3:
if((npa = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 2:
if((mode = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((track = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
break;

case 0:
break;
}
if((n = SRfwaddr(rp, track, mode, npa, d)) == -1)
return -1;
Bprint(&bout, "%ud %ud\n", d[0], (d[1]<<24)|(d[2]<<16)|(d[3]<<8)|d[4]);
return n;
}

static long
cmdtreserve(ScsiReq *rp, int argc, char *argv[])
{
long nbytes;
char *p;

if(argc != 1 || ((nbytes = strtoul(argv[0], &p, 0)) == 0 && p == argv[0])){
rp->status = Status_BADARG;
return -1;
}
return SRtreserve(rp, nbytes);
}

static long
cmdtrackinfo(ScsiReq *rp, int argc, char *argv[])
{
uchar d[MaxDirData], track;
long n;
ulong ul;
char *p;

track = 0;
if(argc && (track = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
if((n = SRtinfo(rp, track, d)) == -1)
return -1;
Bprint(&bout, "buffer length: 0x%uX\n", d[0]);
Bprint(&bout, "number of tracks: 0x%uX\n", d[1]);
ul = (d[2]<<24)|(d[3]<<16)|(d[4]<<8)|d[5];
Bprint(&bout, "start address: 0x%luX\n", ul);
ul = (d[6]<<24)|(d[7]<<16)|(d[8]<<8)|d[9];
Bprint(&bout, "track length: 0x%luX\n", ul);
Bprint(&bout, "track mode: 0x%uX\n", d[0x0A] & 0x0F);
Bprint(&bout, "track status: 0x%uX\n", (d[0x0A]>>4) & 0x0F);
Bprint(&bout, "data mode: 0x%uX\n", d[0x0B] & 0x0F);
ul = (d[0x0C]<<24)|(d[0x0D]<<16)|(d[0x0E]<<8)|d[0x0F];
Bprint(&bout, "free blocks: 0x%luX\n", ul);
return n;
}

static long
cmdwtrack(ScsiReq *rp, int argc, char *argv[])
{
uchar mode, track;
long n, nbytes, total, x;
int fd, pid;
char *p;

mode = track = 0;
nbytes = 0;
switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 4:
if((mode = strtoul(argv[3], &p, 0)) == 0 && p == argv[3]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 3:
if((track = strtoul(argv[2], &p, 0)) == 0 && p == argv[2]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 2:
if((nbytes = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((fd = mkfile(argv[0], OREAD, &pid)) == -1){
rp->status = Status_BADARG;
return -1;
}
break;
}
total = 0;
n = MIN(nbytes, maxiosize);
if((n = readn(fd, rwbuf, n)) == -1){
fprint(2, "file read failed %r\n");
close(fd);
return -1;
}
if((x = SRwtrack(rp, rwbuf, n, track, mode)) != n){
fprint(2, "wtrack: write incomplete: asked %ld, did %ld\n", n, x);
if(rp->status == STok)
rp->status = Status_SW;
close(fd);
return -1;
}
nbytes -= n;
total += n;
while(nbytes){
n = MIN(nbytes, maxiosize);
if((n = read(fd, rwbuf, n)) == -1){
break;
}
if((x = SRwrite(rp, rwbuf, n)) != n){
fprint(2, "write: write incomplete: asked %ld, did %ld\n", n, x);
if(rp->status == STok)
rp->status = Status_SW;
break;
}
nbytes -= n;
total += n;
}
close(fd);
if(pid >= 0 && waitfor(pid)){
rp->status = Status_SW;
return -1;
}
return total;
}

static long
cmdload(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRmload(rp, 0);
}

static long
cmdunload(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRmload(rp, 1);
}

static long
cmdfixation(ScsiReq *rp, int argc, char *argv[])
{
uchar type;
char *p;

type = 0;
if(argc && (type = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
return SRfixation(rp, type);
}

static long
cmdeinit(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SReinitialise(rp);
}

static long
cmdmmove(ScsiReq *rp, int argc, char *argv[])
{
int transport, source, destination, invert;
char *p;

invert = 0;

switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 4:
if((invert = strtoul(argv[3], &p, 0)) == 0 && p == argv[3]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 3:
if((transport = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
if((source = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
if((destination = strtoul(argv[2], &p, 0)) == 0 && p == argv[2]){
rp->status = Status_BADARG;
return -1;
}
break;
}

return SRmmove(rp, transport, source, destination, invert);
}

static long
cmdestatus(ScsiReq *rp, int argc, char *argv[])
{
uchar *list, *lp, type;
long d, i, n, nbytes, status;
char *p;

type = 0;
nbytes = 4096;

switch(argc){

default:
rp->status = Status_BADARG;
return -1;

case 2:
if((nbytes = strtoul(argv[1], &p, 0)) == 0 && p == argv[1]){
rp->status = Status_BADARG;
return -1;
}
/*FALLTHROUGH*/

case 1:
if((type = strtoul(argv[0], &p, 0)) == 0 && p == argv[0]){
rp->status = Status_BADARG;
return -1;
}
break;

case 0:
break;
}

list = malloc(nbytes);
if(list == 0){
rp->status = STnomem;
return -1;
}
status = SRestatus(rp, type, list, nbytes);
if(status == -1){
free(list);
return -1;
}

lp = list;
nbytes = ((lp[5]<<16)|(lp[6]<<8)|lp[7])-8;
Bprint(&bout, " Header\n ");
for(i = 0; i < 8; i++){ /* header */
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
Bputc(&bout, '\n');

while(nbytes > 0){ /* pages */
i = ((lp[5]<<16)|(lp[6]<<8)|lp[7]);
nbytes -= i+8;
Bprint(&bout, " Type");
for(n = 0; n < 8; n++) /* header */
Bprint(&bout, " %2.2uX", lp[n]);
Bprint(&bout, "\n ");
d = (lp[2]<<8)|lp[3];
lp += 8;
for(n = 0; n < i; n++){
if(n && (n % d) == 0)
Bprint(&bout, "\n ");
Bprint(&bout, " %2.2uX", *lp);
lp++;
}
if(n && (n % d))
Bputc(&bout, '\n');
}

free(list);
return status;
}

static long
cmdhelp(ScsiReq *rp, int argc, char *argv[])
{
ScsiCmd *cp;
char *p;

USED(rp);
if(argc)
p = argv[0];
else
p = 0;
for(cp = scsicmd; cp->name; cp++){
if(p == 0 || strcmp(p, cp->name) == 0)
Bprint(&bout, "%s\n", cp->help);
}
return 0;
}

static long
cmdprobe(ScsiReq *rp, int argc, char *argv[])
{
char buf[32];
ScsiReq scsireq;
char *ctlr, *unit;

USED(argc, argv);
rp->status = STok;
scsireq.flags = 0;

for(ctlr="CDEFGHIJ0123456789abcdef"; *ctlr; ctlr++) {
/*
* I can guess how many units you have.
* SATA controllers can have more than two drives each.
*/
if(*ctlr >= 'C' && *ctlr <= 'D')
unit = "01";
else if((*ctlr >= '0' && *ctlr <= '9')
|| (*ctlr >= 'a' && *ctlr <= 'f'))
unit = "0123456789abcdef"; /* allow wide scsi */
else
unit = "01234567";

for(; *unit; unit++){
sprint(buf, "/dev/sd%c%c", *ctlr, *unit);
if(SRopenraw(&scsireq, buf) == -1)
continue;
SRreqsense(&scsireq);
switch(scsireq.status){
case STok:
case Status_SD:
Bprint(&bout, "%s: ", buf);
cmdinquiry(&scsireq, 0, 0);
break;
}
SRclose(&scsireq);
}
}
return 0;
}

static long
cmdclose(ScsiReq *rp, int argc, char *argv[])
{
USED(argc, argv);
return SRclose(rp);
}

static long
cmdopen(ScsiReq *rp, int argc, char *argv[])
{
int raw;
long status;

raw = 0;
if(argc && strcmp("-r", argv[0]) == 0){
raw = 1;
argc--, argv++;
}
if(argc != 1){
rp->status = Status_BADARG;
return -1;
}
if(raw == 0){
if((status = SRopen(rp, argv[0])) != -1 && verbose)
Bprint(&bout, "%sblock size: %ld\n",
rp->flags&Fbfixed? "fixed ": "", rp->lbsize);
}
else {
status = SRopenraw(rp, argv[0]);
rp->lbsize = 512;
}
return status;
}

static ScsiCmd scsicmd[] = {
{ "ready", cmdready, 1, /*[0x00]*/
"ready",
},
{ "rewind", cmdrewind, 1, /*[0x01]*/
"rewind",
},
{ "rezero", cmdrewind, 1, /*[0x01]*/
"rezero",
},
{ "reqsense", cmdreqsense, 1, /*[0x03]*/
"reqsense",
},
{ "format", cmdformat, 0, /*[0x04]*/
"format",
},
{ "rblimits", cmdrblimits, 1, /*[0x05]*/
"rblimits",
},
{ "read", cmdread, 1, /*[0x08]*/
"read [|]file [nbytes]",
},
{ "write", cmdwrite, 1, /*[0x0A]*/
"write [|]file [nbytes]",
},
{ "seek", cmdseek, 1, /*[0x0B]*/
"seek offset [whence]",
},
{ "filemark", cmdfilemark, 1, /*[0x10]*/
"filemark [howmany]",
},
{ "space", cmdspace, 1, /*[0x11]*/
"space [-f] [-b] [[--] howmany]",
},
{ "inquiry", cmdinquiry, 1, /*[0x12]*/
"inquiry",
},
{ "modeselect6",cmdmodeselect6, 1, /*[0x15] */
"modeselect6 bytes...",
},
{ "modeselect", cmdmodeselect10, 1, /*[0x55] */
"modeselect bytes...",
},
{ "modesense6", cmdmodesense6, 1, /*[0x1A]*/
"modesense6 [page [nbytes]]",
},
{ "modesense", cmdmodesense10, 1, /*[0x5A]*/
"modesense [page [nbytes]]",
},
{ "start", cmdstart, 1, /*[0x1B]*/
"start [code]",
},
{ "stop", cmdstop, 1, /*[0x1B]*/
"stop",
},
{ "eject", cmdeject, 1, /*[0x1B]*/
"eject",
},
{ "ingest", cmdingest, 1, /*[0x1B]*/
"ingest",
},
{ "capacity", cmdcapacity, 1, /*[0x25]*/
"capacity",
},

{ "blank", cmdblank, 1, /*[0xA1]*/
"blank [track/LBA [type]]",
},
{ "synccache", cmdsynccache, 1, /*[0x35]*/
"synccache",
},
{ "rtoc", cmdrtoc, 1, /*[0x43]*/
"rtoc [track/session-number [format]]",
},
{ "rdiscinfo", cmdrdiscinfo, 1, /*[0x51]*/
"rdiscinfo",
},
{ "rtrackinfo", cmdrtrackinfo, 1, /*[0x52]*/
"rtrackinfo [track]",
},

{ "cdpause", cmdcdpause, 1, /*[0x4B]*/
"cdpause",
},
{ "cdresume", cmdcdresume, 1, /*[0x4B]*/
"cdresume",
},
{ "cdstop", cmdcdstop, 1, /*[0x4E]*/
"cdstop",
},
{ "cdplay", cmdcdplay, 1, /*[0xA5]*/
"cdplay [track-number] or [-r [LBA [length]]]",
},
{ "cdload", cmdcdload, 1, /*[0xA6*/
"cdload [slot]",
},
{ "cdunload", cmdcdunload, 1, /*[0xA6]*/
"cdunload [slot]",
},
{ "cdstatus", cmdcdstatus, 1, /*[0xBD]*/
"cdstatus",
},
// { "getconf", cmdgetconf, 1, /*[0x46]*/
// "getconf",
// },

// { "fwaddr", cmdfwaddr, 1, /*[0xE2]*/
// "fwaddr [track [mode [npa]]]",
// },
// { "treserve", cmdtreserve, 1, /*[0xE4]*/
// "treserve nbytes",
// },
// { "trackinfo", cmdtrackinfo, 1, /*[0xE5]*/
// "trackinfo [track]",
// },
// { "wtrack", cmdwtrack, 1, /*[0xE6]*/
// "wtrack [|]file [nbytes [track [mode]]]",
// },
// { "load", cmdload, 1, /*[0xE7]*/
// "load",
// },
// { "unload", cmdunload, 1, /*[0xE7]*/
// "unload",
// },
// { "fixation", cmdfixation, 1, /*[0xE9]*/
// "fixation [toc-type]",
// },
{ "einit", cmdeinit, 1, /*[0x07]*/
"einit",
},
{ "estatus", cmdestatus, 1, /*[0xB8]*/
"estatus",
},
{ "mmove", cmdmmove, 1, /*[0xA5]*/
"mmove transport source destination [invert]",
},

{ "help", cmdhelp, 0,
"help",
},
{ "probe", cmdprobe, 0,
"probe",
},
{ "close", cmdclose, 1,
"close",
},
{ "open", cmdopen, 0,
"open [-r] sddev",
},
{ 0, 0 },
};

#define SEP(c) (((c)==' ')||((c)=='\t')||((c)=='\n'))

static char *
tokenise(char *s, char **start, char **end)
{
char *to;
Rune r;
int n;

while(*s && SEP(*s)) /* skip leading white space */
s++;
to = *start = s;
while(*s){
n = chartorune(&r, s);
if(SEP(r)){
if(to != *start) /* we have data */
break;
s += n; /* null string - keep looking */
while(*s && SEP(*s))
s++;
to = *start = s;
}
else if(r == '\''){
s += n; /* skip leading quote */
while(*s){
n = chartorune(&r, s);
if(r == '\''){
if(s[1] != '\'')
break;
s++; /* embedded quote */
}
while (n--)
*to++ = *s++;
}
if(!*s) /* no trailing quote */
break;
s++; /* skip trailing quote */
}
else {
while(n--)
*to++ = *s++;
}
}
*end = to;
return s;
}

static int
parse(char *s, char *fields[], int nfields)
{
int c, argc;
char *start, *end;

argc = 0;
c = *s;
while(c){
s = tokenise(s, &start, &end);
c = *s++;
if(*start == 0)
break;
if(argc >= nfields-1)
return -1;
*end = 0;
fields[argc++] = start;
}
fields[argc] = 0;
return argc;
}

static void
usage(void)
{
fprint(2, "usage: %s [-6eq] [-m maxiosize] [[-r] /dev/sdXX]\n", argv0);
exits("usage");
}

static struct {
int status;
char* description;
} description[] = {
STnomem, "buffer allocation failed",
STtimeout, "bus timeout",
STharderr, "controller error of some kind",
STok, "good",
STcheck, "check condition",
STcondmet, "condition met/good",
STbusy, "busy ",
STintok, "intermediate/good",
STintcondmet, "intermediate/condition met/good",
STresconf, "reservation conflict",
STterminated, "command terminated",
STqfull, "queue full",

Status_SD, "sense-data available",
Status_SW, "internal software error",
Status_BADARG, "bad argument to request",

0, 0,
};

void
main(int argc, char *argv[])
{
ScsiReq target;
char *ap, *av[256];
int ac, i, raw = 0;
ScsiCmd *cp;
long status;

ARGBEGIN {
case 'e':
exabyte = 1;
/* fallthrough */
case '6':
force6bytecmds = 1;
break;
case 'm':
ap = ARGF();
if(ap == nil)
usage();
maxiosize = atol(ap);
if(maxiosize < 512 || maxiosize > MaxIOsize)
sysfatal("max-xfer < 512 or > %d", MaxIOsize);
break;
case 'r': /* must be last option and not bundled */
raw++;
break;
case 'q':
verbose = 0;
break;
default:
usage();
} ARGEND

if(Binit(&bin, 0, OREAD) == Beof || Binit(&bout, 1, OWRITE) == Beof){
fprint(2, "%s: can't init bio: %r\n", argv0);
exits("Binit");
}

memset(&target, 0, sizeof target);
if (raw) { /* hack for -r */
++argc;
--argv;
}
if(argc && cmdopen(&target, argc, argv) == -1) {
fprint(2, "open failed\n");
usage();
}
Bflush(&bout);

while(ap = Brdline(&bin, '\n')){
ap[Blinelen(&bin)-1] = 0;
switch(ac = parse(ap, av, nelem(av))){

default:
for(cp = scsicmd; cp->name; cp++){
if(strcmp(cp->name, av[0]) == 0)
break;
}
if(cp->name == 0){
Bprint(&bout, "eh?\n");
break;
}
if((target.flags & Fopen) == 0 && cp->open){
Bprint(&bout, "no current target\n");
break;
}
if((status = (*cp->f)(&target, ac-1, &av[1])) != -1){
if(verbose)
Bprint(&bout, "ok %ld\n", status);
break;
}
for(i = 0; description[i].description; i++){
if(target.status != description[i].status)
continue;
if(target.status == Status_SD)
makesense(&target);
else
Bprint(&bout, "%s\n", description[i].description);
break;
}
break;

case -1:
Bprint(&bout, "eh?\n");
break;

case 0:
break;
}
Bflush(&bout);
}
exits(0);
}

/* USB mass storage fake */
long
umsrequest(Umsc *umsc, ScsiPtr *cmd, ScsiPtr *data, int *status)
{
USED(umsc, data, cmd);
*status = STharderr;
return -1;
}