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/*
* usb/print - usb printer file server
* BUG: Assumes the printer will be always connected and
* not hot-plugged. (Otherwise should stay running and
* listen to errors to keep the device there as long as it has
* not failed). Also, this is untested and done ad-hoc to
* replace the print script.
*/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "usb.h"
enum
{
Qdir = 0,
Qctl,
Qraw,
Qdata,
Qmax,
};
int
findendpoints(Dev *dev, int devid)
{
Ep *ep;
Dev *d;
Usbdev *ud;
int i, epout;
epout = -1;
ud = dev->usb;
for(i = 0; i < nelem(ud->ep); i++){
if((ep = ud->ep[i]) == nil)
break;
if(ep->iface->csp != 0x020107)
continue;
if(ep->type == Ebulk && (ep->dir == Eboth || ep->dir == Eout))
if(epout == -1)
epout = ep->id;
}
dprint(2, "print: ep ids: out %d\n", epout);
if(epout == -1)
return -1;
d = openep(dev, epout);
if(d == nil){
fprint(2, "print: openep %d: %r\n", epout);
return -1;
}
opendevdata(d, OWRITE);
if(d->dfd < 0){
fprint(2, "print: open i/o ep data: %r\n");
closedev(d);
return -1;
}
dprint(2, "print: ep out %s\n", d->dir);
if(usbdebug > 1)
devctl(d, "debug 1");
devctl(d, "name lp%d", devid);
return 0;
}
static int
usage(void)
{
werrstr("usage: usb/print [-N id]");
return -1;
}
int
printmain(Dev *dev, int argc, char **argv)
{
int devid;
devid = dev->id;
ARGBEGIN{
case 'N':
devid = atoi(EARGF(usage()));
break;
default:
return usage();
}ARGEND
if(argc != 0)
return usage();
if(findendpoints(dev, devid) < 0){
werrstr("print: endpoints not found");
return -1;
}
return 0;
}
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