89 lines
3 KiB
C
89 lines
3 KiB
C
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/* NS-USBloader - native libraries for 'special purposes'
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* Copyright (C) 2020 Dmitry Isaenko
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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#include <linux/usb/ch9.h>
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#include <errno.h>
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#include "nsusbloader_Utilities_RcmSmash.h"
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struct usbdevfs_urb urb;
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JNIEXPORT jint JNICALL Java_nsusbloader_Utilities_RcmSmash_smashLinux
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(JNIEnv * jni_env, jclass this_class, jint bus_id, jint device_addr){
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int ret_value;
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char *usb_path = (char*)malloc(24 * sizeof(char));
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sprintf(usb_path, "/dev/bus/usb/%03d/%03d", bus_id, device_addr);
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int fd = open(usb_path, O_RDWR);
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if (fd == -1)
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return -1;
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struct usb_ctrlrequest* ctrl_req;
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__u8* buf[0x7000+sizeof(ctrl_req)];
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ctrl_req = (struct usb_ctrlrequest *) buf;
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ctrl_req->bRequestType = 0x82;
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ctrl_req->bRequest = USB_REQ_GET_STATUS;
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ctrl_req->wValue = 0;
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ctrl_req->wIndex = 0;
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ctrl_req->wLength = 0x7000;
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memset(&urb, 0, sizeof(urb));
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urb.type = USBDEVFS_URB_TYPE_CONTROL;
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urb.endpoint = USB_DIR_IN | 0;
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urb.buffer = buf;
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urb.buffer_length = sizeof(buf);
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//Submit request
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ret_value = ioctl(fd, USBDEVFS_SUBMITURB, &urb);
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// If we failed on this step, it's a VERY bad sign. Nothing to do, let's report failure.
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if (ret_value != 0)
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return ret_value;
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// Wait 1/4 sec
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usleep(250000);
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struct usbdevfs_urb urb1;
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// Let's pick reply (everybody does it, right? In non-blocking manner.)
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ret_value = ioctl(fd, USBDEVFS_REAPURBNDELAY, &urb1);
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if (ret_value < 0){
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if (errno == EAGAIN){ // In case of resource temporarily unavailable
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// Wired.. so much time left. Let's cancel it!
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ret_value = ioctl(fd, USBDEVFS_DISCARDURB, &urb);
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// And wait a bit more..
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usleep(40000);
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// And try to pick reply. Yes, it's still possible. See /usr/src/linux/drivers/usb/core/devio.c
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ret_value = ioctl(fd, USBDEVFS_REAPURBNDELAY, &urb1);
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}
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}
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// Leftovers.
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free(usb_path);
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// Let's try to close device, but even if we fail with this, nvm.
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close(fd); // So we won't even write returned value somewhere.
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return 0;
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}
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JNIEXPORT jint JNICALL Java_nsusbloader_Utilities_RcmSmash_smashWindows
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(JNIEnv * jni_env, jclass this_class){
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return -1;
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}
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