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towards a usb file system

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This commit is contained in:
Bas Wijnen
2010-01-14 18:14:37 +01:00
parent 3debf99082
commit 0c1dfe719b
20 changed files with 690 additions and 507 deletions
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85
mips/nanonote/server/usb-server.ccp
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@@ -22,9 +22,11 @@
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstring>
#include <shevek/mainloop.hh>
#include <shevek/server.hh>
#include <shevek/args.hh>
#include "devices.hh"
struct client
@@ -69,18 +71,87 @@ struct data:
void data::poll ():
while true:
char buffer[2]
int s = usb_control_msg (handle, USB_ENDPOINT_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, POLL, 0, 0, buffer, 8, timeout)
if s < 1 || s > 2 || buffer[0] != '#':
unsigned buffer[2]
int s = usb_control_msg (handle, USB_ENDPOINT_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, POLL, 0, 0, (char *)buffer, 8, timeout)
if s != 8:
std::cerr << "unable to send poll message to device: " << usb_strerror () << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
if s != 1:
std::cout << buffer[1] << std::flush
else:
break
switch buffer[0] & 0xffff:
case ~0 & 0xffff:
// Log character.
std::cout << (char)buffer[1] << std::flush
continue
case ~1 & 0xffff:
// No event.
break
case Directory::GET_SIZE:
unsigned long long size = dir.size ()
if usb_control_msg (handle, USB_ENDPOINT_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, Directory::GET_SIZE, 0, 0, (char const *)&size, 8, timeout) != 8:
std::cerr << "unable to send size to device: " << usb_strerror () << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
continue
case Directory::GET_NAME:
if buffer[1] >= dir.size ():
std::cerr << "invalid file name requested" << std::endl;
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
if usb_control_msg (handle, USB_ENDPOINT_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, Directory::GET_NAME, 0, 0, dir[buffer[1]].name, 16, timeout) != 16:
std::cerr << "unable to send name to device: " << usb_strerror () << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
continue
case Directory::LOCK_RO:
if !lock++:
dir.load (files)
continue
case Directory::UNLOCK_RO:
if !lock:
std::cerr << "unlocking without lock" << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
--lock
continue
case Directory::GET_FILE_RO:
unsigned f = buffer[0] >> 16
if f >= dir.size ():
std::cerr << "reading invalid file" << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
std::ifstream file (dir[f])
file.seek (buffer[1] << 12)
char page[1 << 12]
memset (page, 0, 1 << 12)
file.read (page, 1 << 12)
for unsigned i = 0; i < (1 << 12); i += 64:
if usb_bulk_write (handle, 1 | USB_ENDPOINT_OUT, p, 64) != 64:
std::cerr << "unable to send file to device: " << usb_strerror () << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
continue
default:
std::cerr << "invalid request" << std::endl
usb_release_interface (handle, 0)
usb_close (handle)
handle = NULL
return
// If the code reaches this point, break out of the loop. The loop continues if a continue statement is reached.
break
(shevek::absolute_time () + shevek::relative_time (1, 0)).schedule (sigc::mem_fun (*this, &data::poll))
struct client : public shevek::server <client, data *>::connection: