ff1259b38e
32-bit userspace calling into 64-bit kernel cause different ioctl codes to get generated. The different ioctl code gets generated because sizeof is used on mtp and accessory structures which is different for 32/64 compilation. Because of this, 64-bit kernel can never execute the right ioctl command. Implement compat_ioctl to handle such execution environment. Change-Id: I26cc10986e28a28eab6f3c65f28f4d2b808112d9 Signed-off-by: Sujeet Kumar <ksujeet@codeaurora.org> Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
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* Gadget Function Driver for MTP
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*
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* Copyright (C) 2010 Google, Inc.
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* Author: Mike Lockwood <lockwood@android.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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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*/
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#ifndef __LINUX_USB_F_MTP_H
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#define __LINUX_USB_F_MTP_H
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#include <uapi/linux/usb/f_mtp.h>
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#include <linux/ioctl.h>
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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#endif
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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struct __compat_mtp_file_range {
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compat_int_t fd;
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compat_loff_t offset;
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int64_t length;
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uint16_t command;
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uint32_t transaction_id;
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};
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struct __compat_mtp_event {
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compat_size_t length;
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compat_caddr_t data;
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};
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#define COMPAT_MTP_SEND_FILE _IOW('M', 0, \
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struct __compat_mtp_file_range)
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#define COMPAT_MTP_RECEIVE_FILE _IOW('M', 1, \
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struct __compat_mtp_file_range)
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#define COMPAT_MTP_SEND_EVENT _IOW('M', 3, \
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struct __compat_mtp_event)
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#define COMPAT_MTP_SEND_FILE_WITH_HEADER _IOW('M', 4, \
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struct __compat_mtp_file_range)
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#endif
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#endif
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#endif /* __LINUX_USB_F_MTP_H */
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