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2121 lines
61 KiB
C
2121 lines
61 KiB
C
/*
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* Media Transfer Protocol implementation, backed by host filesystem.
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*
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* Copyright Red Hat, Inc 2014
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*
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* Author:
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* Gerd Hoffmann <kraxel@redhat.com>
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*
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* This code is licensed under the GPL v2 or later.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/error-report.h"
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#include <wchar.h>
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#include <dirent.h>
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#include <glib/gstdio.h>
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#include <sys/statvfs.h>
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#include "qemu/iov.h"
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#include "qemu/module.h"
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#include "qemu/filemonitor.h"
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#include "trace.h"
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#include "hw/qdev-properties.h"
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#include "hw/usb.h"
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#include "migration/vmstate.h"
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#include "desc.h"
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#include "qemu/units.h"
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#include "qom/object.h"
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/* ----------------------------------------------------------------------- */
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enum mtp_container_type {
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TYPE_COMMAND = 1,
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TYPE_DATA = 2,
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TYPE_RESPONSE = 3,
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TYPE_EVENT = 4,
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};
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/* MTP write stage, for internal use only */
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enum mtp_write_status {
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WRITE_START = 1,
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WRITE_CONTINUE = 2,
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WRITE_END = 3,
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};
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enum mtp_code {
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/* command codes */
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CMD_GET_DEVICE_INFO = 0x1001,
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CMD_OPEN_SESSION = 0x1002,
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CMD_CLOSE_SESSION = 0x1003,
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CMD_GET_STORAGE_IDS = 0x1004,
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CMD_GET_STORAGE_INFO = 0x1005,
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CMD_GET_NUM_OBJECTS = 0x1006,
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CMD_GET_OBJECT_HANDLES = 0x1007,
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CMD_GET_OBJECT_INFO = 0x1008,
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CMD_GET_OBJECT = 0x1009,
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CMD_DELETE_OBJECT = 0x100b,
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CMD_SEND_OBJECT_INFO = 0x100c,
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CMD_SEND_OBJECT = 0x100d,
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CMD_GET_PARTIAL_OBJECT = 0x101b,
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CMD_GET_OBJECT_PROPS_SUPPORTED = 0x9801,
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CMD_GET_OBJECT_PROP_DESC = 0x9802,
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CMD_GET_OBJECT_PROP_VALUE = 0x9803,
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/* response codes */
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RES_OK = 0x2001,
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RES_GENERAL_ERROR = 0x2002,
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RES_SESSION_NOT_OPEN = 0x2003,
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RES_INVALID_TRANSACTION_ID = 0x2004,
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RES_OPERATION_NOT_SUPPORTED = 0x2005,
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RES_PARAMETER_NOT_SUPPORTED = 0x2006,
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RES_INCOMPLETE_TRANSFER = 0x2007,
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RES_INVALID_STORAGE_ID = 0x2008,
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RES_INVALID_OBJECT_HANDLE = 0x2009,
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RES_INVALID_OBJECT_FORMAT_CODE = 0x200b,
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RES_STORE_FULL = 0x200c,
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RES_STORE_READ_ONLY = 0x200e,
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RES_PARTIAL_DELETE = 0x2012,
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RES_STORE_NOT_AVAILABLE = 0x2013,
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RES_SPEC_BY_FORMAT_UNSUPPORTED = 0x2014,
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RES_INVALID_OBJECTINFO = 0x2015,
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RES_DESTINATION_UNSUPPORTED = 0x2020,
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RES_INVALID_PARENT_OBJECT = 0x201a,
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RES_INVALID_PARAMETER = 0x201d,
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RES_SESSION_ALREADY_OPEN = 0x201e,
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RES_INVALID_OBJECT_PROP_CODE = 0xA801,
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/* format codes */
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FMT_UNDEFINED_OBJECT = 0x3000,
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FMT_ASSOCIATION = 0x3001,
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/* event codes */
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EVT_CANCEL_TRANSACTION = 0x4001,
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EVT_OBJ_ADDED = 0x4002,
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EVT_OBJ_REMOVED = 0x4003,
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EVT_OBJ_INFO_CHANGED = 0x4007,
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/* object properties */
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PROP_STORAGE_ID = 0xDC01,
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PROP_OBJECT_FORMAT = 0xDC02,
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PROP_OBJECT_COMPRESSED_SIZE = 0xDC04,
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PROP_PARENT_OBJECT = 0xDC0B,
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PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER = 0xDC41,
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PROP_NAME = 0xDC44,
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};
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enum mtp_data_type {
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DATA_TYPE_UINT16 = 0x0004,
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DATA_TYPE_UINT32 = 0x0006,
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DATA_TYPE_UINT64 = 0x0008,
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DATA_TYPE_UINT128 = 0x000a,
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DATA_TYPE_STRING = 0xffff,
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};
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typedef struct {
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uint32_t length;
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uint16_t type;
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uint16_t code;
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uint32_t trans;
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} QEMU_PACKED mtp_container;
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/* ----------------------------------------------------------------------- */
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typedef struct MTPState MTPState;
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typedef struct MTPControl MTPControl;
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typedef struct MTPData MTPData;
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typedef struct MTPObject MTPObject;
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enum {
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EP_DATA_IN = 1,
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EP_DATA_OUT,
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EP_EVENT,
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};
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typedef struct MTPMonEntry MTPMonEntry;
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struct MTPMonEntry {
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uint32_t event;
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uint32_t handle;
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QTAILQ_ENTRY(MTPMonEntry) next;
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};
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struct MTPControl {
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uint16_t code;
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uint32_t trans;
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int argc;
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uint32_t argv[5];
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};
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struct MTPData {
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uint16_t code;
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uint32_t trans;
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uint64_t offset;
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uint64_t length;
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uint64_t alloc;
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uint8_t *data;
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bool first;
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/* Used for >4G file sizes */
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bool pending;
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int fd;
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uint8_t write_status;
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/* Internal pointer per every MTP_WRITE_BUF_SZ */
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uint64_t data_offset;
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};
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struct MTPObject {
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uint32_t handle;
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uint16_t format;
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char *name;
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char *path;
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struct stat stat;
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/* file monitor watch id */
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int64_t watchid;
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MTPObject *parent;
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uint32_t nchildren;
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QLIST_HEAD(, MTPObject) children;
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QLIST_ENTRY(MTPObject) list;
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bool have_children;
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QTAILQ_ENTRY(MTPObject) next;
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};
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struct MTPState {
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USBDevice dev;
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char *root;
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char *desc;
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uint32_t flags;
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MTPData *data_in;
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MTPData *data_out;
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MTPControl *result;
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uint32_t session;
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uint32_t next_handle;
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bool readonly;
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QTAILQ_HEAD(, MTPObject) objects;
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QFileMonitor *file_monitor;
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QTAILQ_HEAD(, MTPMonEntry) events;
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/* Responder is expecting a write operation */
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bool write_pending;
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struct {
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uint32_t parent_handle;
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uint16_t format;
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uint32_t size;
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char *filename;
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} dataset;
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};
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/*
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* ObjectInfo dataset received from initiator
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* Fields we don't care about are ignored
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*/
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typedef struct {
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uint32_t storage_id; /*unused*/
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uint16_t format;
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uint16_t protection_status; /*unused*/
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uint32_t size;
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uint16_t thumb_format; /*unused*/
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uint32_t thumb_comp_sz; /*unused*/
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uint32_t thumb_pix_width; /*unused*/
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uint32_t thumb_pix_height; /*unused*/
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uint32_t image_pix_width; /*unused*/
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uint32_t image_pix_height; /*unused*/
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uint32_t image_bit_depth; /*unused*/
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uint32_t parent; /*unused*/
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uint16_t assoc_type;
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uint32_t assoc_desc;
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uint32_t seq_no; /*unused*/
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uint8_t length; /*part of filename field*/
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uint8_t filename[0]; /* UTF-16 encoded */
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char date_created[0]; /*unused*/
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char date_modified[0]; /*unused*/
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char keywords[0]; /*unused*/
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/* string and other data follows */
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} QEMU_PACKED ObjectInfo;
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#define TYPE_USB_MTP "usb-mtp"
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OBJECT_DECLARE_SIMPLE_TYPE(MTPState, USB_MTP)
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#define QEMU_STORAGE_ID 0x00010001
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#define MTP_FLAG_WRITABLE 0
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#define FLAG_SET(_mtp, _flag) ((_mtp)->flags & (1 << (_flag)))
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/* ----------------------------------------------------------------------- */
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#define MTP_MANUFACTURER "QEMU"
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#define MTP_PRODUCT "QEMU filesharing"
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#define MTP_WRITE_BUF_SZ (512 * KiB)
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enum {
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STR_MANUFACTURER = 1,
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STR_PRODUCT,
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STR_SERIALNUMBER,
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STR_MTP,
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STR_CONFIG_FULL,
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STR_CONFIG_HIGH,
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STR_CONFIG_SUPER,
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};
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static const USBDescStrings desc_strings = {
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[STR_MANUFACTURER] = MTP_MANUFACTURER,
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[STR_PRODUCT] = MTP_PRODUCT,
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[STR_SERIALNUMBER] = "34617",
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[STR_MTP] = "MTP",
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[STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
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[STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
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[STR_CONFIG_SUPER] = "Super speed config (usb 3.0)",
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};
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static const USBDescIface desc_iface_full = {
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.bInterfaceNumber = 0,
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.bNumEndpoints = 3,
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.bInterfaceClass = USB_CLASS_STILL_IMAGE,
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.bInterfaceSubClass = 0x01,
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.bInterfaceProtocol = 0x01,
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.iInterface = STR_MTP,
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_IN | EP_DATA_IN,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 64,
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},{
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.bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 64,
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},{
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.bEndpointAddress = USB_DIR_IN | EP_EVENT,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = 64,
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.bInterval = 0x0a,
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},
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}
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};
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static const USBDescDevice desc_device_full = {
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.bcdUSB = 0x0200,
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.bMaxPacketSize0 = 8,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) {
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{
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.iConfiguration = STR_CONFIG_FULL,
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.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP,
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.bMaxPower = 2,
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.nif = 1,
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.ifs = &desc_iface_full,
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},
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},
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};
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static const USBDescIface desc_iface_high = {
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.bInterfaceNumber = 0,
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.bNumEndpoints = 3,
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.bInterfaceClass = USB_CLASS_STILL_IMAGE,
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.bInterfaceSubClass = 0x01,
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.bInterfaceProtocol = 0x01,
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.iInterface = STR_MTP,
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_IN | EP_DATA_IN,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 512,
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},{
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.bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT,
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.bmAttributes = USB_ENDPOINT_XFER_BULK,
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.wMaxPacketSize = 512,
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},{
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.bEndpointAddress = USB_DIR_IN | EP_EVENT,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = 64,
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.bInterval = 0x0a,
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},
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}
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};
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static const USBDescDevice desc_device_high = {
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.bcdUSB = 0x0200,
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.bMaxPacketSize0 = 64,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) {
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{
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.iConfiguration = STR_CONFIG_HIGH,
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.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP,
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.bMaxPower = 2,
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.nif = 1,
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.ifs = &desc_iface_high,
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},
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},
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};
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static const USBDescMSOS desc_msos = {
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.CompatibleID = "MTP",
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.SelectiveSuspendEnabled = true,
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};
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static const USBDesc desc = {
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.id = {
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.idVendor = 0x46f4, /* CRC16() of "QEMU" */
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.idProduct = 0x0004,
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.bcdDevice = 0,
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.iManufacturer = STR_MANUFACTURER,
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.iProduct = STR_PRODUCT,
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.iSerialNumber = STR_SERIALNUMBER,
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},
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.full = &desc_device_full,
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.high = &desc_device_high,
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.str = desc_strings,
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.msos = &desc_msos,
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};
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/* ----------------------------------------------------------------------- */
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static MTPObject *usb_mtp_object_alloc(MTPState *s, uint32_t handle,
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MTPObject *parent, const char *name)
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{
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MTPObject *o = g_new0(MTPObject, 1);
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if (name[0] == '.') {
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goto ignore;
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}
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o->watchid = -1;
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o->handle = handle;
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o->parent = parent;
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o->name = g_strdup(name);
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if (parent == NULL) {
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o->path = g_strdup(name);
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} else {
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o->path = g_strdup_printf("%s/%s", parent->path, name);
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}
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if (lstat(o->path, &o->stat) != 0) {
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goto ignore;
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}
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if (S_ISREG(o->stat.st_mode)) {
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o->format = FMT_UNDEFINED_OBJECT;
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} else if (S_ISDIR(o->stat.st_mode)) {
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o->format = FMT_ASSOCIATION;
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} else {
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goto ignore;
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}
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if (access(o->path, R_OK) != 0) {
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goto ignore;
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}
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trace_usb_mtp_object_alloc(s->dev.addr, o->handle, o->path);
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QTAILQ_INSERT_TAIL(&s->objects, o, next);
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return o;
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ignore:
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g_free(o->name);
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g_free(o->path);
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g_free(o);
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return NULL;
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}
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static void usb_mtp_object_free(MTPState *s, MTPObject *o)
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{
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MTPObject *iter;
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if (!o) {
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return;
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}
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trace_usb_mtp_object_free(s->dev.addr, o->handle, o->path);
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if (o->watchid != -1 && s->file_monitor) {
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qemu_file_monitor_remove_watch(s->file_monitor, o->path, o->watchid);
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}
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QTAILQ_REMOVE(&s->objects, o, next);
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if (o->parent) {
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QLIST_REMOVE(o, list);
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o->parent->nchildren--;
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}
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while (!QLIST_EMPTY(&o->children)) {
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iter = QLIST_FIRST(&o->children);
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usb_mtp_object_free(s, iter);
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}
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g_free(o->name);
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g_free(o->path);
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g_free(o);
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}
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|
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static MTPObject *usb_mtp_object_lookup(MTPState *s, uint32_t handle)
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{
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MTPObject *o;
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QTAILQ_FOREACH(o, &s->objects, next) {
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if (o->handle == handle) {
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return o;
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}
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}
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return NULL;
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}
|
|
|
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static MTPObject *usb_mtp_add_child(MTPState *s, MTPObject *o,
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const char *name)
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{
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MTPObject *child =
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usb_mtp_object_alloc(s, s->next_handle++, o, name);
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|
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if (child) {
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trace_usb_mtp_add_child(s->dev.addr, child->handle, child->path);
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QLIST_INSERT_HEAD(&o->children, child, list);
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o->nchildren++;
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if (child->format == FMT_ASSOCIATION) {
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QLIST_INIT(&child->children);
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}
|
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}
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|
|
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return child;
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}
|
|
|
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static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent,
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const char *name, int len)
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{
|
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MTPObject *iter;
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|
|
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if (len == -1) {
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len = strlen(name);
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}
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QLIST_FOREACH(iter, &parent->children, list) {
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if (strncmp(iter->name, name, len) == 0) {
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return iter;
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}
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}
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|
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return NULL;
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}
|
|
|
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static MTPObject *usb_mtp_object_lookup_id(MTPState *s, int64_t id)
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{
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MTPObject *iter;
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|
|
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QTAILQ_FOREACH(iter, &s->objects, next) {
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if (iter->watchid == id) {
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return iter;
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}
|
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}
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|
|
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return NULL;
|
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}
|
|
|
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static void file_monitor_event(int64_t id,
|
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QFileMonitorEvent ev,
|
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const char *name,
|
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void *opaque)
|
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{
|
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MTPState *s = opaque;
|
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MTPObject *parent = usb_mtp_object_lookup_id(s, id);
|
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MTPMonEntry *entry = NULL;
|
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MTPObject *o;
|
|
|
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if (!parent) {
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return;
|
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}
|
|
|
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switch (ev) {
|
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case QFILE_MONITOR_EVENT_CREATED:
|
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if (usb_mtp_object_lookup_name(parent, name, -1)) {
|
|
/* Duplicate create event */
|
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return;
|
|
}
|
|
entry = g_new0(MTPMonEntry, 1);
|
|
entry->handle = s->next_handle;
|
|
entry->event = EVT_OBJ_ADDED;
|
|
o = usb_mtp_add_child(s, parent, name);
|
|
if (!o) {
|
|
g_free(entry);
|
|
return;
|
|
}
|
|
trace_usb_mtp_file_monitor_event(s->dev.addr, name, "Obj Added");
|
|
break;
|
|
|
|
case QFILE_MONITOR_EVENT_DELETED:
|
|
/*
|
|
* The kernel issues a IN_IGNORED event
|
|
* when a dir containing a watchpoint is
|
|
* deleted, so we don't have to delete the
|
|
* watchpoint
|
|
*/
|
|
o = usb_mtp_object_lookup_name(parent, name, -1);
|
|
if (!o) {
|
|
return;
|
|
}
|
|
entry = g_new0(MTPMonEntry, 1);
|
|
entry->handle = o->handle;
|
|
entry->event = EVT_OBJ_REMOVED;
|
|
trace_usb_mtp_file_monitor_event(s->dev.addr, o->path, "Obj Deleted");
|
|
usb_mtp_object_free(s, o);
|
|
break;
|
|
|
|
case QFILE_MONITOR_EVENT_MODIFIED:
|
|
o = usb_mtp_object_lookup_name(parent, name, -1);
|
|
if (!o) {
|
|
return;
|
|
}
|
|
entry = g_new0(MTPMonEntry, 1);
|
|
entry->handle = o->handle;
|
|
entry->event = EVT_OBJ_INFO_CHANGED;
|
|
trace_usb_mtp_file_monitor_event(s->dev.addr, o->path, "Obj Modified");
|
|
break;
|
|
|
|
case QFILE_MONITOR_EVENT_IGNORED:
|
|
trace_usb_mtp_file_monitor_event(s->dev.addr, parent->path,
|
|
"Obj parent dir ignored");
|
|
break;
|
|
|
|
case QFILE_MONITOR_EVENT_ATTRIBUTES:
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
if (entry) {
|
|
QTAILQ_INSERT_HEAD(&s->events, entry, next);
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_file_monitor_cleanup(MTPState *s)
|
|
{
|
|
MTPMonEntry *e, *p;
|
|
|
|
QTAILQ_FOREACH_SAFE(e, &s->events, next, p) {
|
|
QTAILQ_REMOVE(&s->events, e, next);
|
|
g_free(e);
|
|
}
|
|
|
|
qemu_file_monitor_free(s->file_monitor);
|
|
s->file_monitor = NULL;
|
|
}
|
|
|
|
|
|
static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
|
|
{
|
|
struct dirent *entry;
|
|
DIR *dir;
|
|
int fd;
|
|
Error *err = NULL;
|
|
|
|
if (o->have_children) {
|
|
return;
|
|
}
|
|
o->have_children = true;
|
|
|
|
fd = open(o->path, O_DIRECTORY | O_CLOEXEC | O_NOFOLLOW);
|
|
if (fd < 0) {
|
|
return;
|
|
}
|
|
dir = fdopendir(fd);
|
|
if (!dir) {
|
|
close(fd);
|
|
return;
|
|
}
|
|
|
|
if (s->file_monitor) {
|
|
int64_t id = qemu_file_monitor_add_watch(s->file_monitor, o->path, NULL,
|
|
file_monitor_event, s, &err);
|
|
if (id == -1) {
|
|
error_reportf_err(err,
|
|
"usb-mtp: failed to add watch for %s: ",
|
|
o->path);
|
|
} else {
|
|
trace_usb_mtp_file_monitor_event(s->dev.addr, o->path,
|
|
"Watch Added");
|
|
o->watchid = id;
|
|
}
|
|
}
|
|
|
|
while ((entry = readdir(dir)) != NULL) {
|
|
usb_mtp_add_child(s, o, entry->d_name);
|
|
}
|
|
closedir(dir);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static MTPData *usb_mtp_data_alloc(MTPControl *c)
|
|
{
|
|
MTPData *data = g_new0(MTPData, 1);
|
|
|
|
data->code = c->code;
|
|
data->trans = c->trans;
|
|
data->fd = -1;
|
|
data->first = true;
|
|
return data;
|
|
}
|
|
|
|
static void usb_mtp_data_free(MTPData *data)
|
|
{
|
|
if (data == NULL) {
|
|
return;
|
|
}
|
|
if (data->fd != -1) {
|
|
close(data->fd);
|
|
}
|
|
g_free(data->data);
|
|
g_free(data);
|
|
}
|
|
|
|
static void usb_mtp_realloc(MTPData *data, uint32_t bytes)
|
|
{
|
|
if (data->length + bytes <= data->alloc) {
|
|
return;
|
|
}
|
|
data->alloc = (data->length + bytes + 0xff) & ~0xff;
|
|
data->data = g_realloc(data->data, data->alloc);
|
|
}
|
|
|
|
static void usb_mtp_add_u8(MTPData *data, uint8_t val)
|
|
{
|
|
usb_mtp_realloc(data, 1);
|
|
data->data[data->length++] = val;
|
|
}
|
|
|
|
static void usb_mtp_add_u16(MTPData *data, uint16_t val)
|
|
{
|
|
usb_mtp_realloc(data, 2);
|
|
data->data[data->length++] = (val >> 0) & 0xff;
|
|
data->data[data->length++] = (val >> 8) & 0xff;
|
|
}
|
|
|
|
static void usb_mtp_add_u32(MTPData *data, uint32_t val)
|
|
{
|
|
usb_mtp_realloc(data, 4);
|
|
data->data[data->length++] = (val >> 0) & 0xff;
|
|
data->data[data->length++] = (val >> 8) & 0xff;
|
|
data->data[data->length++] = (val >> 16) & 0xff;
|
|
data->data[data->length++] = (val >> 24) & 0xff;
|
|
}
|
|
|
|
static void usb_mtp_add_u64(MTPData *data, uint64_t val)
|
|
{
|
|
usb_mtp_realloc(data, 8);
|
|
data->data[data->length++] = (val >> 0) & 0xff;
|
|
data->data[data->length++] = (val >> 8) & 0xff;
|
|
data->data[data->length++] = (val >> 16) & 0xff;
|
|
data->data[data->length++] = (val >> 24) & 0xff;
|
|
data->data[data->length++] = (val >> 32) & 0xff;
|
|
data->data[data->length++] = (val >> 40) & 0xff;
|
|
data->data[data->length++] = (val >> 48) & 0xff;
|
|
data->data[data->length++] = (val >> 56) & 0xff;
|
|
}
|
|
|
|
static void usb_mtp_add_u16_array(MTPData *data, uint32_t len,
|
|
const uint16_t *vals)
|
|
{
|
|
int i;
|
|
|
|
usb_mtp_add_u32(data, len);
|
|
for (i = 0; i < len; i++) {
|
|
usb_mtp_add_u16(data, vals[i]);
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_add_u32_array(MTPData *data, uint32_t len,
|
|
const uint32_t *vals)
|
|
{
|
|
int i;
|
|
|
|
usb_mtp_add_u32(data, len);
|
|
for (i = 0; i < len; i++) {
|
|
usb_mtp_add_u32(data, vals[i]);
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_add_wstr(MTPData *data, const wchar_t *str)
|
|
{
|
|
uint32_t len = wcslen(str);
|
|
int i;
|
|
|
|
if (len > 0) {
|
|
len++; /* include terminating L'\0' */
|
|
}
|
|
|
|
usb_mtp_add_u8(data, len);
|
|
for (i = 0; i < len; i++) {
|
|
usb_mtp_add_u16(data, str[i]);
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_add_str(MTPData *data, const char *str)
|
|
{
|
|
uint32_t len = strlen(str)+1;
|
|
wchar_t *wstr = g_new(wchar_t, len);
|
|
size_t ret;
|
|
|
|
ret = mbstowcs(wstr, str, len);
|
|
if (ret == -1) {
|
|
usb_mtp_add_wstr(data, L"Oops");
|
|
} else {
|
|
usb_mtp_add_wstr(data, wstr);
|
|
}
|
|
|
|
g_free(wstr);
|
|
}
|
|
|
|
static void usb_mtp_add_time(MTPData *data, time_t time)
|
|
{
|
|
g_autoptr(GDateTime) then = g_date_time_new_from_unix_utc(time);
|
|
g_autofree char *thenstr = g_date_time_format(then, "%Y%m%dT%H%M%S");
|
|
usb_mtp_add_str(data, thenstr);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static void usb_mtp_queue_result(MTPState *s, uint16_t code, uint32_t trans,
|
|
int argc, uint32_t arg0, uint32_t arg1,
|
|
uint32_t arg2)
|
|
{
|
|
MTPControl *c = g_new0(MTPControl, 1);
|
|
|
|
c->code = code;
|
|
c->trans = trans;
|
|
c->argc = argc;
|
|
if (argc > 0) {
|
|
c->argv[0] = arg0;
|
|
}
|
|
if (argc > 1) {
|
|
c->argv[1] = arg1;
|
|
}
|
|
if (argc > 2) {
|
|
c->argv[2] = arg2;
|
|
}
|
|
|
|
assert(s->result == NULL);
|
|
s->result = c;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static MTPData *usb_mtp_get_device_info(MTPState *s, MTPControl *c)
|
|
{
|
|
static const uint16_t ops[] = {
|
|
CMD_GET_DEVICE_INFO,
|
|
CMD_OPEN_SESSION,
|
|
CMD_CLOSE_SESSION,
|
|
CMD_GET_STORAGE_IDS,
|
|
CMD_GET_STORAGE_INFO,
|
|
CMD_GET_NUM_OBJECTS,
|
|
CMD_GET_OBJECT_HANDLES,
|
|
CMD_GET_OBJECT_INFO,
|
|
CMD_DELETE_OBJECT,
|
|
CMD_SEND_OBJECT_INFO,
|
|
CMD_SEND_OBJECT,
|
|
CMD_GET_OBJECT,
|
|
CMD_GET_PARTIAL_OBJECT,
|
|
CMD_GET_OBJECT_PROPS_SUPPORTED,
|
|
CMD_GET_OBJECT_PROP_DESC,
|
|
CMD_GET_OBJECT_PROP_VALUE,
|
|
};
|
|
static const uint16_t fmt[] = {
|
|
FMT_UNDEFINED_OBJECT,
|
|
FMT_ASSOCIATION,
|
|
};
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
|
|
trace_usb_mtp_op_get_device_info(s->dev.addr);
|
|
|
|
usb_mtp_add_u16(d, 100);
|
|
usb_mtp_add_u32(d, 0x00000006);
|
|
usb_mtp_add_u16(d, 0x0064);
|
|
usb_mtp_add_wstr(d, L"");
|
|
usb_mtp_add_u16(d, 0x0000);
|
|
|
|
usb_mtp_add_u16_array(d, ARRAY_SIZE(ops), ops);
|
|
usb_mtp_add_u16_array(d, 0, NULL);
|
|
usb_mtp_add_u16_array(d, 0, NULL);
|
|
usb_mtp_add_u16_array(d, 0, NULL);
|
|
usb_mtp_add_u16_array(d, ARRAY_SIZE(fmt), fmt);
|
|
|
|
usb_mtp_add_wstr(d, L"" MTP_MANUFACTURER);
|
|
usb_mtp_add_wstr(d, L"" MTP_PRODUCT);
|
|
usb_mtp_add_wstr(d, L"0.1");
|
|
usb_mtp_add_wstr(d, L"0123456789abcdef0123456789abcdef");
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_storage_ids(MTPState *s, MTPControl *c)
|
|
{
|
|
static const uint32_t ids[] = {
|
|
QEMU_STORAGE_ID,
|
|
};
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
|
|
trace_usb_mtp_op_get_storage_ids(s->dev.addr);
|
|
|
|
usb_mtp_add_u32_array(d, ARRAY_SIZE(ids), ids);
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_storage_info(MTPState *s, MTPControl *c)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
struct statvfs buf;
|
|
int rc;
|
|
|
|
trace_usb_mtp_op_get_storage_info(s->dev.addr);
|
|
|
|
if (FLAG_SET(s, MTP_FLAG_WRITABLE)) {
|
|
usb_mtp_add_u16(d, 0x0003);
|
|
usb_mtp_add_u16(d, 0x0002);
|
|
usb_mtp_add_u16(d, 0x0000);
|
|
} else {
|
|
usb_mtp_add_u16(d, 0x0001);
|
|
usb_mtp_add_u16(d, 0x0002);
|
|
usb_mtp_add_u16(d, 0x0001);
|
|
}
|
|
|
|
rc = statvfs(s->root, &buf);
|
|
if (rc == 0) {
|
|
usb_mtp_add_u64(d, (uint64_t)buf.f_frsize * buf.f_blocks);
|
|
usb_mtp_add_u64(d, (uint64_t)buf.f_bavail * buf.f_blocks);
|
|
usb_mtp_add_u32(d, buf.f_ffree);
|
|
} else {
|
|
usb_mtp_add_u64(d, 0xffffffff);
|
|
usb_mtp_add_u64(d, 0xffffffff);
|
|
usb_mtp_add_u32(d, 0xffffffff);
|
|
}
|
|
|
|
usb_mtp_add_str(d, s->desc);
|
|
usb_mtp_add_wstr(d, L"123456789abcdef");
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object_handles(MTPState *s, MTPControl *c,
|
|
MTPObject *o)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
uint32_t i = 0;
|
|
g_autofree uint32_t *handles = g_new(uint32_t, o->nchildren);
|
|
MTPObject *iter;
|
|
|
|
trace_usb_mtp_op_get_object_handles(s->dev.addr, o->handle, o->path);
|
|
|
|
QLIST_FOREACH(iter, &o->children, list) {
|
|
handles[i++] = iter->handle;
|
|
}
|
|
assert(i == o->nchildren);
|
|
usb_mtp_add_u32_array(d, o->nchildren, handles);
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object_info(MTPState *s, MTPControl *c,
|
|
MTPObject *o)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
|
|
trace_usb_mtp_op_get_object_info(s->dev.addr, o->handle, o->path);
|
|
|
|
usb_mtp_add_u32(d, QEMU_STORAGE_ID);
|
|
usb_mtp_add_u16(d, o->format);
|
|
usb_mtp_add_u16(d, 0);
|
|
|
|
if (o->stat.st_size > 0xFFFFFFFF) {
|
|
usb_mtp_add_u32(d, 0xFFFFFFFF);
|
|
} else {
|
|
usb_mtp_add_u32(d, o->stat.st_size);
|
|
}
|
|
|
|
usb_mtp_add_u16(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
|
|
if (o->parent) {
|
|
usb_mtp_add_u32(d, o->parent->handle);
|
|
} else {
|
|
usb_mtp_add_u32(d, 0);
|
|
}
|
|
if (o->format == FMT_ASSOCIATION) {
|
|
usb_mtp_add_u16(d, 0x0001);
|
|
usb_mtp_add_u32(d, 0x00000001);
|
|
usb_mtp_add_u32(d, 0);
|
|
} else {
|
|
usb_mtp_add_u16(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
usb_mtp_add_u32(d, 0);
|
|
}
|
|
|
|
usb_mtp_add_str(d, o->name);
|
|
usb_mtp_add_time(d, o->stat.st_ctime);
|
|
usb_mtp_add_time(d, o->stat.st_mtime);
|
|
usb_mtp_add_wstr(d, L"");
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c,
|
|
MTPObject *o)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
|
|
trace_usb_mtp_op_get_object(s->dev.addr, o->handle, o->path);
|
|
|
|
d->fd = open(o->path, O_RDONLY | O_CLOEXEC | O_NOFOLLOW);
|
|
if (d->fd == -1) {
|
|
usb_mtp_data_free(d);
|
|
return NULL;
|
|
}
|
|
d->length = o->stat.st_size;
|
|
d->alloc = 512;
|
|
d->data = g_malloc(d->alloc);
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c,
|
|
MTPObject *o)
|
|
{
|
|
MTPData *d;
|
|
off_t offset;
|
|
|
|
if (c->argc <= 2) {
|
|
return NULL;
|
|
}
|
|
trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path,
|
|
c->argv[1], c->argv[2]);
|
|
|
|
d = usb_mtp_data_alloc(c);
|
|
d->fd = open(o->path, O_RDONLY | O_CLOEXEC | O_NOFOLLOW);
|
|
if (d->fd == -1) {
|
|
usb_mtp_data_free(d);
|
|
return NULL;
|
|
}
|
|
|
|
offset = c->argv[1];
|
|
if (offset > o->stat.st_size) {
|
|
offset = o->stat.st_size;
|
|
}
|
|
if (lseek(d->fd, offset, SEEK_SET) < 0) {
|
|
usb_mtp_data_free(d);
|
|
return NULL;
|
|
}
|
|
|
|
d->length = c->argv[2];
|
|
if (d->length > o->stat.st_size - offset) {
|
|
d->length = o->stat.st_size - offset;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object_props_supported(MTPState *s, MTPControl *c)
|
|
{
|
|
static const uint16_t props[] = {
|
|
PROP_STORAGE_ID,
|
|
PROP_OBJECT_FORMAT,
|
|
PROP_OBJECT_COMPRESSED_SIZE,
|
|
PROP_PARENT_OBJECT,
|
|
PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER,
|
|
PROP_NAME,
|
|
};
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
usb_mtp_add_u16_array(d, ARRAY_SIZE(props), props);
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object_prop_desc(MTPState *s, MTPControl *c)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
switch (c->argv[0]) {
|
|
case PROP_STORAGE_ID:
|
|
usb_mtp_add_u16(d, PROP_STORAGE_ID);
|
|
usb_mtp_add_u16(d, DATA_TYPE_UINT32);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
case PROP_OBJECT_FORMAT:
|
|
usb_mtp_add_u16(d, PROP_OBJECT_FORMAT);
|
|
usb_mtp_add_u16(d, DATA_TYPE_UINT16);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u16(d, 0x0000);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
case PROP_OBJECT_COMPRESSED_SIZE:
|
|
usb_mtp_add_u16(d, PROP_OBJECT_COMPRESSED_SIZE);
|
|
usb_mtp_add_u16(d, DATA_TYPE_UINT64);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u64(d, 0x0000000000000000);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
case PROP_PARENT_OBJECT:
|
|
usb_mtp_add_u16(d, PROP_PARENT_OBJECT);
|
|
usb_mtp_add_u16(d, DATA_TYPE_UINT32);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
case PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER:
|
|
usb_mtp_add_u16(d, PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER);
|
|
usb_mtp_add_u16(d, DATA_TYPE_UINT128);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u64(d, 0x0000000000000000);
|
|
usb_mtp_add_u64(d, 0x0000000000000000);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
case PROP_NAME:
|
|
usb_mtp_add_u16(d, PROP_NAME);
|
|
usb_mtp_add_u16(d, DATA_TYPE_STRING);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
usb_mtp_add_u8(d, 0x00);
|
|
break;
|
|
default:
|
|
usb_mtp_data_free(d);
|
|
return NULL;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
static MTPData *usb_mtp_get_object_prop_value(MTPState *s, MTPControl *c,
|
|
MTPObject *o)
|
|
{
|
|
MTPData *d = usb_mtp_data_alloc(c);
|
|
switch (c->argv[1]) {
|
|
case PROP_STORAGE_ID:
|
|
usb_mtp_add_u32(d, QEMU_STORAGE_ID);
|
|
break;
|
|
case PROP_OBJECT_FORMAT:
|
|
usb_mtp_add_u16(d, o->format);
|
|
break;
|
|
case PROP_OBJECT_COMPRESSED_SIZE:
|
|
usb_mtp_add_u64(d, o->stat.st_size);
|
|
break;
|
|
case PROP_PARENT_OBJECT:
|
|
if (o->parent == NULL) {
|
|
usb_mtp_add_u32(d, 0x00000000);
|
|
} else {
|
|
usb_mtp_add_u32(d, o->parent->handle);
|
|
}
|
|
break;
|
|
case PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER:
|
|
/* Should be persistent between sessions,
|
|
* but using our objedt ID is "good enough"
|
|
* for now */
|
|
usb_mtp_add_u64(d, 0x0000000000000000);
|
|
usb_mtp_add_u64(d, o->handle);
|
|
break;
|
|
case PROP_NAME:
|
|
usb_mtp_add_str(d, o->name);
|
|
break;
|
|
default:
|
|
usb_mtp_data_free(d);
|
|
return NULL;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
/*
|
|
* Return values when object @o is deleted.
|
|
* If at least one of the deletions succeeded,
|
|
* DELETE_SUCCESS is set and if at least one
|
|
* of the deletions failed, DELETE_FAILURE is
|
|
* set. Both bits being set (DELETE_PARTIAL)
|
|
* signifies a RES_PARTIAL_DELETE being sent
|
|
* back to the initiator.
|
|
*/
|
|
enum {
|
|
DELETE_SUCCESS = (1 << 0),
|
|
DELETE_FAILURE = (1 << 1),
|
|
DELETE_PARTIAL = (DELETE_FAILURE | DELETE_SUCCESS),
|
|
};
|
|
|
|
static int usb_mtp_deletefn(MTPState *s, MTPObject *o, uint32_t trans)
|
|
{
|
|
MTPObject *iter, *iter2;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* TODO: Add support for Protection Status
|
|
*/
|
|
|
|
QLIST_FOREACH(iter, &o->children, list) {
|
|
if (iter->format == FMT_ASSOCIATION) {
|
|
QLIST_FOREACH(iter2, &iter->children, list) {
|
|
ret |= usb_mtp_deletefn(s, iter2, trans);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (o->format == FMT_UNDEFINED_OBJECT) {
|
|
if (remove(o->path)) {
|
|
ret |= DELETE_FAILURE;
|
|
} else {
|
|
usb_mtp_object_free(s, o);
|
|
ret |= DELETE_SUCCESS;
|
|
}
|
|
} else if (o->format == FMT_ASSOCIATION) {
|
|
if (rmdir(o->path)) {
|
|
ret |= DELETE_FAILURE;
|
|
} else {
|
|
usb_mtp_object_free(s, o);
|
|
ret |= DELETE_SUCCESS;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void usb_mtp_object_delete(MTPState *s, uint32_t handle,
|
|
uint32_t format_code, uint32_t trans)
|
|
{
|
|
MTPObject *o;
|
|
int ret;
|
|
|
|
/* Return error if store is read-only */
|
|
if (!FLAG_SET(s, MTP_FLAG_WRITABLE)) {
|
|
usb_mtp_queue_result(s, RES_STORE_READ_ONLY,
|
|
trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
if (format_code != 0) {
|
|
usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED,
|
|
trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
if (handle == 0xFFFFFFF) {
|
|
o = QTAILQ_FIRST(&s->objects);
|
|
} else {
|
|
o = usb_mtp_object_lookup(s, handle);
|
|
}
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
ret = usb_mtp_deletefn(s, o, trans);
|
|
switch (ret) {
|
|
case DELETE_SUCCESS:
|
|
usb_mtp_queue_result(s, RES_OK, trans,
|
|
0, 0, 0, 0);
|
|
break;
|
|
case DELETE_FAILURE:
|
|
usb_mtp_queue_result(s, RES_PARTIAL_DELETE,
|
|
trans, 0, 0, 0, 0);
|
|
break;
|
|
case DELETE_PARTIAL:
|
|
usb_mtp_queue_result(s, RES_PARTIAL_DELETE,
|
|
trans, 0, 0, 0, 0);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void usb_mtp_command(MTPState *s, MTPControl *c)
|
|
{
|
|
MTPData *data_in = NULL;
|
|
MTPObject *o = NULL;
|
|
uint32_t nres = 0, res0 = 0;
|
|
Error *err = NULL;
|
|
|
|
/* sanity checks */
|
|
if (c->code >= CMD_CLOSE_SESSION && s->session == 0) {
|
|
usb_mtp_queue_result(s, RES_SESSION_NOT_OPEN,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
/* process commands */
|
|
switch (c->code) {
|
|
case CMD_GET_DEVICE_INFO:
|
|
data_in = usb_mtp_get_device_info(s, c);
|
|
break;
|
|
case CMD_OPEN_SESSION:
|
|
if (s->session) {
|
|
usb_mtp_queue_result(s, RES_SESSION_ALREADY_OPEN,
|
|
c->trans, 1, s->session, 0, 0);
|
|
return;
|
|
}
|
|
if (c->argv[0] == 0) {
|
|
usb_mtp_queue_result(s, RES_INVALID_PARAMETER,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
trace_usb_mtp_op_open_session(s->dev.addr);
|
|
s->session = c->argv[0];
|
|
usb_mtp_object_alloc(s, s->next_handle++, NULL, s->root);
|
|
|
|
s->file_monitor = qemu_file_monitor_new(&err);
|
|
if (err) {
|
|
error_reportf_err(err,
|
|
"usb-mtp: file monitoring init failed: ");
|
|
} else {
|
|
QTAILQ_INIT(&s->events);
|
|
}
|
|
break;
|
|
case CMD_CLOSE_SESSION:
|
|
trace_usb_mtp_op_close_session(s->dev.addr);
|
|
s->session = 0;
|
|
s->next_handle = 0;
|
|
usb_mtp_file_monitor_cleanup(s);
|
|
usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects));
|
|
assert(QTAILQ_EMPTY(&s->objects));
|
|
break;
|
|
case CMD_GET_STORAGE_IDS:
|
|
data_in = usb_mtp_get_storage_ids(s, c);
|
|
break;
|
|
case CMD_GET_STORAGE_INFO:
|
|
if (c->argv[0] != QEMU_STORAGE_ID &&
|
|
c->argv[0] != 0xffffffff) {
|
|
usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_storage_info(s, c);
|
|
break;
|
|
case CMD_GET_NUM_OBJECTS:
|
|
case CMD_GET_OBJECT_HANDLES:
|
|
if (c->argv[0] != QEMU_STORAGE_ID &&
|
|
c->argv[0] != 0xffffffff) {
|
|
usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (c->argv[1] != 0x00000000) {
|
|
usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (c->argv[2] == 0x00000000 ||
|
|
c->argv[2] == 0xffffffff) {
|
|
o = QTAILQ_FIRST(&s->objects);
|
|
} else {
|
|
o = usb_mtp_object_lookup(s, c->argv[2]);
|
|
}
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (o->format != FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
usb_mtp_object_readdir(s, o);
|
|
if (c->code == CMD_GET_NUM_OBJECTS) {
|
|
trace_usb_mtp_op_get_num_objects(s->dev.addr, o->handle, o->path);
|
|
nres = 1;
|
|
res0 = o->nchildren;
|
|
} else {
|
|
data_in = usb_mtp_get_object_handles(s, c, o);
|
|
}
|
|
break;
|
|
case CMD_GET_OBJECT_INFO:
|
|
o = usb_mtp_object_lookup(s, c->argv[0]);
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_object_info(s, c, o);
|
|
break;
|
|
case CMD_GET_OBJECT:
|
|
o = usb_mtp_object_lookup(s, c->argv[0]);
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (o->format == FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_object(s, c, o);
|
|
if (data_in == NULL) {
|
|
usb_mtp_queue_result(s, RES_GENERAL_ERROR,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
break;
|
|
case CMD_DELETE_OBJECT:
|
|
usb_mtp_object_delete(s, c->argv[0], c->argv[1], c->trans);
|
|
return;
|
|
case CMD_GET_PARTIAL_OBJECT:
|
|
o = usb_mtp_object_lookup(s, c->argv[0]);
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (o->format == FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_partial_object(s, c, o);
|
|
if (data_in == NULL) {
|
|
usb_mtp_queue_result(s, RES_GENERAL_ERROR,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
nres = 1;
|
|
res0 = data_in->length;
|
|
break;
|
|
case CMD_SEND_OBJECT_INFO:
|
|
/* Return error if store is read-only */
|
|
if (!FLAG_SET(s, MTP_FLAG_WRITABLE)) {
|
|
usb_mtp_queue_result(s, RES_STORE_READ_ONLY,
|
|
c->trans, 0, 0, 0, 0);
|
|
} else if (c->argv[0] && (c->argv[0] != QEMU_STORAGE_ID)) {
|
|
/* First parameter points to storage id or is 0 */
|
|
usb_mtp_queue_result(s, RES_STORE_NOT_AVAILABLE, c->trans,
|
|
0, 0, 0, 0);
|
|
} else if (c->argv[1] && !c->argv[0]) {
|
|
/* If second parameter is specified, first must also be specified */
|
|
usb_mtp_queue_result(s, RES_DESTINATION_UNSUPPORTED, c->trans,
|
|
0, 0, 0, 0);
|
|
} else {
|
|
uint32_t handle = c->argv[1];
|
|
if (handle == 0xFFFFFFFF || handle == 0) {
|
|
/* root object */
|
|
o = QTAILQ_FIRST(&s->objects);
|
|
} else {
|
|
o = usb_mtp_object_lookup(s, handle);
|
|
}
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, c->trans,
|
|
0, 0, 0, 0);
|
|
} else if (o->format != FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT, c->trans,
|
|
0, 0, 0, 0);
|
|
}
|
|
}
|
|
if (o) {
|
|
s->dataset.parent_handle = o->handle;
|
|
}
|
|
s->data_out = usb_mtp_data_alloc(c);
|
|
return;
|
|
case CMD_SEND_OBJECT:
|
|
if (!FLAG_SET(s, MTP_FLAG_WRITABLE)) {
|
|
usb_mtp_queue_result(s, RES_STORE_READ_ONLY,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (!s->write_pending) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECTINFO,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
s->data_out = usb_mtp_data_alloc(c);
|
|
return;
|
|
case CMD_GET_OBJECT_PROPS_SUPPORTED:
|
|
if (c->argv[0] != FMT_UNDEFINED_OBJECT &&
|
|
c->argv[0] != FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_FORMAT_CODE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_object_props_supported(s, c);
|
|
break;
|
|
case CMD_GET_OBJECT_PROP_DESC:
|
|
if (c->argv[1] != FMT_UNDEFINED_OBJECT &&
|
|
c->argv[1] != FMT_ASSOCIATION) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_FORMAT_CODE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_object_prop_desc(s, c);
|
|
if (data_in == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_PROP_CODE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
break;
|
|
case CMD_GET_OBJECT_PROP_VALUE:
|
|
o = usb_mtp_object_lookup(s, c->argv[0]);
|
|
if (o == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
data_in = usb_mtp_get_object_prop_value(s, c, o);
|
|
if (data_in == NULL) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECT_PROP_CODE,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
break;
|
|
default:
|
|
trace_usb_mtp_op_unknown(s->dev.addr, c->code);
|
|
usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED,
|
|
c->trans, 0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
/* return results on success */
|
|
if (data_in) {
|
|
assert(s->data_in == NULL);
|
|
s->data_in = data_in;
|
|
}
|
|
usb_mtp_queue_result(s, RES_OK, c->trans, nres, res0, 0, 0);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static void usb_mtp_handle_reset(USBDevice *dev)
|
|
{
|
|
MTPState *s = USB_MTP(dev);
|
|
|
|
trace_usb_mtp_reset(s->dev.addr);
|
|
|
|
usb_mtp_file_monitor_cleanup(s);
|
|
usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects));
|
|
s->session = 0;
|
|
usb_mtp_data_free(s->data_in);
|
|
s->data_in = NULL;
|
|
usb_mtp_data_free(s->data_out);
|
|
s->data_out = NULL;
|
|
g_free(s->result);
|
|
s->result = NULL;
|
|
}
|
|
|
|
static void usb_mtp_handle_control(USBDevice *dev, USBPacket *p,
|
|
int request, int value, int index,
|
|
int length, uint8_t *data)
|
|
{
|
|
int ret;
|
|
MTPState *s = USB_MTP(dev);
|
|
uint16_t *event = (uint16_t *)data;
|
|
|
|
switch (request) {
|
|
case ClassInterfaceOutRequest | 0x64:
|
|
if (*event == EVT_CANCEL_TRANSACTION) {
|
|
g_free(s->result);
|
|
s->result = NULL;
|
|
usb_mtp_data_free(s->data_in);
|
|
s->data_in = NULL;
|
|
if (s->write_pending) {
|
|
g_free(s->dataset.filename);
|
|
s->write_pending = false;
|
|
s->dataset.size = 0;
|
|
}
|
|
usb_mtp_data_free(s->data_out);
|
|
s->data_out = NULL;
|
|
} else {
|
|
p->status = USB_RET_STALL;
|
|
}
|
|
break;
|
|
default:
|
|
ret = usb_desc_handle_control(dev, p, request,
|
|
value, index, length, data);
|
|
if (ret >= 0) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
trace_usb_mtp_stall(dev->addr, "unknown control request");
|
|
}
|
|
|
|
static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p)
|
|
{
|
|
/* we don't use async packets, so this should never be called */
|
|
fprintf(stderr, "%s\n", __func__);
|
|
}
|
|
|
|
static char *utf16_to_str(uint8_t len, uint8_t *str16)
|
|
{
|
|
wchar_t *wstr = g_new0(wchar_t, len + 1);
|
|
int count, dlen;
|
|
char *dest;
|
|
|
|
for (count = 0; count < len; count++) {
|
|
/* FIXME: not working for surrogate pairs */
|
|
wstr[count] = lduw_le_p(str16 + (count * 2));
|
|
}
|
|
wstr[count] = 0;
|
|
|
|
dlen = wcstombs(NULL, wstr, 0) + 1;
|
|
dest = g_malloc(dlen);
|
|
wcstombs(dest, wstr, dlen);
|
|
g_free(wstr);
|
|
return dest;
|
|
}
|
|
|
|
/* Wrapper around write, returns 0 on failure */
|
|
static uint64_t write_retry(int fd, void *buf, uint64_t size, off_t offset)
|
|
{
|
|
uint64_t ret = 0;
|
|
|
|
if (lseek(fd, offset, SEEK_SET) < 0) {
|
|
goto done;
|
|
}
|
|
|
|
ret = qemu_write_full(fd, buf, size);
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static int usb_mtp_update_object(MTPObject *parent, char *name)
|
|
{
|
|
int ret = 0;
|
|
|
|
MTPObject *o =
|
|
usb_mtp_object_lookup_name(parent, name, strlen(name));
|
|
|
|
if (o) {
|
|
ret = lstat(o->path, &o->stat);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void usb_mtp_write_data(MTPState *s, uint32_t handle)
|
|
{
|
|
MTPData *d = s->data_out;
|
|
MTPObject *parent =
|
|
usb_mtp_object_lookup(s, s->dataset.parent_handle);
|
|
char *path = NULL;
|
|
uint64_t rc;
|
|
mode_t mask = 0755;
|
|
int ret = 0;
|
|
|
|
assert(d != NULL);
|
|
|
|
switch (d->write_status) {
|
|
case WRITE_START:
|
|
if (!parent || !s->write_pending) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECTINFO, d->trans,
|
|
0, 0, 0, 0);
|
|
return;
|
|
}
|
|
|
|
if (s->dataset.filename) {
|
|
path = g_strdup_printf("%s/%s", parent->path, s->dataset.filename);
|
|
if (s->dataset.format == FMT_ASSOCIATION) {
|
|
ret = g_mkdir(path, mask);
|
|
if (!ret) {
|
|
usb_mtp_queue_result(s, RES_OK, d->trans, 3,
|
|
QEMU_STORAGE_ID,
|
|
s->dataset.parent_handle,
|
|
handle);
|
|
goto close;
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
d->fd = open(path, O_CREAT | O_WRONLY |
|
|
O_CLOEXEC | O_NOFOLLOW, mask & 0666);
|
|
if (d->fd == -1) {
|
|
ret = 1;
|
|
goto done;
|
|
}
|
|
|
|
/* Return success if initiator sent 0 sized data */
|
|
if (!s->dataset.size) {
|
|
goto done;
|
|
}
|
|
if (d->length != MTP_WRITE_BUF_SZ && !d->pending) {
|
|
d->write_status = WRITE_END;
|
|
}
|
|
}
|
|
/* fall through */
|
|
case WRITE_CONTINUE:
|
|
case WRITE_END:
|
|
rc = write_retry(d->fd, d->data, d->data_offset,
|
|
d->offset - d->data_offset);
|
|
if (rc != d->data_offset) {
|
|
ret = 1;
|
|
goto done;
|
|
}
|
|
if (d->write_status != WRITE_END) {
|
|
g_free(path);
|
|
return;
|
|
} else {
|
|
/*
|
|
* Return an incomplete transfer if file size doesn't match
|
|
* for < 4G file or if lstat fails which will result in an incorrect
|
|
* file size
|
|
*/
|
|
if ((s->dataset.size != 0xFFFFFFFF &&
|
|
d->offset != s->dataset.size) ||
|
|
usb_mtp_update_object(parent, s->dataset.filename)) {
|
|
usb_mtp_queue_result(s, RES_INCOMPLETE_TRANSFER, d->trans,
|
|
0, 0, 0, 0);
|
|
goto close;
|
|
}
|
|
}
|
|
}
|
|
|
|
done:
|
|
if (ret) {
|
|
usb_mtp_queue_result(s, RES_STORE_FULL, d->trans,
|
|
0, 0, 0, 0);
|
|
} else {
|
|
usb_mtp_queue_result(s, RES_OK, d->trans,
|
|
0, 0, 0, 0);
|
|
}
|
|
close:
|
|
/*
|
|
* The write dataset is kept around and freed only
|
|
* on success or if another write request comes in
|
|
*/
|
|
if (d->fd != -1) {
|
|
close(d->fd);
|
|
d->fd = -1;
|
|
}
|
|
g_free(s->dataset.filename);
|
|
s->dataset.size = 0;
|
|
g_free(path);
|
|
s->write_pending = false;
|
|
}
|
|
|
|
static void usb_mtp_write_metadata(MTPState *s, uint64_t dlen)
|
|
{
|
|
MTPData *d = s->data_out;
|
|
ObjectInfo *dataset = (ObjectInfo *)d->data;
|
|
char *filename;
|
|
MTPObject *o;
|
|
MTPObject *p = usb_mtp_object_lookup(s, s->dataset.parent_handle);
|
|
uint32_t next_handle = s->next_handle;
|
|
size_t filename_chars = dlen - offsetof(ObjectInfo, filename);
|
|
|
|
/*
|
|
* filename is utf-16. We're intentionally doing
|
|
* integer division to truncate if malicious guest
|
|
* sent an odd number of bytes.
|
|
*/
|
|
filename_chars /= 2;
|
|
|
|
assert(!s->write_pending);
|
|
assert(p != NULL);
|
|
|
|
filename = utf16_to_str(MIN(dataset->length, filename_chars),
|
|
dataset->filename);
|
|
|
|
if (strchr(filename, '/')) {
|
|
usb_mtp_queue_result(s, RES_PARAMETER_NOT_SUPPORTED, d->trans,
|
|
0, 0, 0, 0);
|
|
g_free(filename);
|
|
return;
|
|
}
|
|
|
|
o = usb_mtp_object_lookup_name(p, filename, -1);
|
|
if (o != NULL) {
|
|
next_handle = o->handle;
|
|
}
|
|
|
|
s->dataset.filename = filename;
|
|
s->dataset.format = dataset->format;
|
|
s->dataset.size = dataset->size;
|
|
s->write_pending = true;
|
|
|
|
if (s->dataset.format == FMT_ASSOCIATION) {
|
|
usb_mtp_write_data(s, next_handle);
|
|
} else {
|
|
usb_mtp_queue_result(s, RES_OK, d->trans, 3, QEMU_STORAGE_ID,
|
|
s->dataset.parent_handle, next_handle);
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_get_data(MTPState *s, mtp_container *container,
|
|
USBPacket *p)
|
|
{
|
|
MTPData *d = s->data_out;
|
|
uint64_t dlen;
|
|
uint32_t data_len = p->iov.size;
|
|
uint64_t total_len;
|
|
|
|
if (!d) {
|
|
usb_mtp_queue_result(s, RES_INVALID_OBJECTINFO, 0,
|
|
0, 0, 0, 0);
|
|
return;
|
|
}
|
|
if (d->first) {
|
|
/* Total length of incoming data */
|
|
total_len = cpu_to_le32(container->length) - sizeof(mtp_container);
|
|
/* Length of data in this packet */
|
|
data_len -= sizeof(mtp_container);
|
|
if (total_len < MTP_WRITE_BUF_SZ) {
|
|
usb_mtp_realloc(d, total_len);
|
|
d->length += total_len;
|
|
} else {
|
|
usb_mtp_realloc(d, MTP_WRITE_BUF_SZ - sizeof(mtp_container));
|
|
d->length += MTP_WRITE_BUF_SZ - sizeof(mtp_container);
|
|
}
|
|
d->offset = 0;
|
|
d->first = false;
|
|
d->pending = false;
|
|
d->data_offset = 0;
|
|
d->write_status = WRITE_START;
|
|
}
|
|
|
|
if (d->pending) {
|
|
memset(d->data, 0, d->length);
|
|
if (d->length != MTP_WRITE_BUF_SZ) {
|
|
usb_mtp_realloc(d, MTP_WRITE_BUF_SZ - d->length);
|
|
d->length += (MTP_WRITE_BUF_SZ - d->length);
|
|
}
|
|
d->pending = false;
|
|
d->write_status = WRITE_CONTINUE;
|
|
d->data_offset = 0;
|
|
}
|
|
|
|
if (d->length - d->data_offset > data_len) {
|
|
dlen = data_len;
|
|
} else {
|
|
dlen = d->length - d->data_offset;
|
|
}
|
|
|
|
switch (d->code) {
|
|
case CMD_SEND_OBJECT_INFO:
|
|
usb_packet_copy(p, d->data + d->data_offset, dlen);
|
|
d->offset += dlen;
|
|
d->data_offset += dlen;
|
|
if (d->data_offset == d->length) {
|
|
/* The operation might have already failed */
|
|
if (!s->result) {
|
|
usb_mtp_write_metadata(s, dlen);
|
|
}
|
|
usb_mtp_data_free(s->data_out);
|
|
s->data_out = NULL;
|
|
return;
|
|
}
|
|
break;
|
|
case CMD_SEND_OBJECT:
|
|
usb_packet_copy(p, d->data + d->data_offset, dlen);
|
|
d->offset += dlen;
|
|
d->data_offset += dlen;
|
|
if ((p->iov.size % 64) || !p->iov.size) {
|
|
assert((s->dataset.size == 0xFFFFFFFF) ||
|
|
(s->dataset.size == d->offset));
|
|
|
|
if (d->length == MTP_WRITE_BUF_SZ) {
|
|
d->write_status = WRITE_END;
|
|
} else {
|
|
d->write_status = WRITE_START;
|
|
}
|
|
usb_mtp_write_data(s, 0);
|
|
usb_mtp_data_free(s->data_out);
|
|
s->data_out = NULL;
|
|
return;
|
|
}
|
|
if (d->data_offset == d->length) {
|
|
d->pending = true;
|
|
usb_mtp_write_data(s, 0);
|
|
}
|
|
break;
|
|
default:
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
MTPState *s = USB_MTP(dev);
|
|
MTPControl cmd;
|
|
mtp_container container;
|
|
uint32_t params[5];
|
|
uint16_t container_type;
|
|
int i, rc;
|
|
|
|
switch (p->ep->nr) {
|
|
case EP_DATA_IN:
|
|
if (s->data_out != NULL) {
|
|
/* guest bug */
|
|
trace_usb_mtp_stall(s->dev.addr, "awaiting data-out");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
if (p->iov.size < sizeof(container)) {
|
|
trace_usb_mtp_stall(s->dev.addr, "packet too small");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
if (s->data_in != NULL) {
|
|
MTPData *d = s->data_in;
|
|
uint64_t dlen = d->length - d->offset;
|
|
if (d->first) {
|
|
trace_usb_mtp_data_in(s->dev.addr, d->trans, d->length);
|
|
if (d->length + sizeof(container) > 0xFFFFFFFF) {
|
|
container.length = cpu_to_le32(0xFFFFFFFF);
|
|
} else {
|
|
container.length =
|
|
cpu_to_le32(d->length + sizeof(container));
|
|
}
|
|
container.type = cpu_to_le16(TYPE_DATA);
|
|
container.code = cpu_to_le16(d->code);
|
|
container.trans = cpu_to_le32(d->trans);
|
|
usb_packet_copy(p, &container, sizeof(container));
|
|
d->first = false;
|
|
if (dlen > p->iov.size - sizeof(container)) {
|
|
dlen = p->iov.size - sizeof(container);
|
|
}
|
|
} else {
|
|
if (dlen > p->iov.size) {
|
|
dlen = p->iov.size;
|
|
}
|
|
}
|
|
if (d->fd == -1) {
|
|
usb_packet_copy(p, d->data + d->offset, dlen);
|
|
} else {
|
|
if (d->alloc < p->iov.size) {
|
|
d->alloc = p->iov.size;
|
|
d->data = g_realloc(d->data, d->alloc);
|
|
}
|
|
rc = read(d->fd, d->data, dlen);
|
|
if (rc != dlen) {
|
|
memset(d->data, 0, dlen);
|
|
s->result->code = RES_INCOMPLETE_TRANSFER;
|
|
}
|
|
usb_packet_copy(p, d->data, dlen);
|
|
}
|
|
d->offset += dlen;
|
|
if (d->offset == d->length) {
|
|
usb_mtp_data_free(s->data_in);
|
|
s->data_in = NULL;
|
|
}
|
|
} else if (s->result != NULL) {
|
|
MTPControl *r = s->result;
|
|
int length = sizeof(container) + r->argc * sizeof(uint32_t);
|
|
if (r->code == RES_OK) {
|
|
trace_usb_mtp_success(s->dev.addr, r->trans,
|
|
(r->argc > 0) ? r->argv[0] : 0,
|
|
(r->argc > 1) ? r->argv[1] : 0);
|
|
} else {
|
|
trace_usb_mtp_error(s->dev.addr, r->code, r->trans,
|
|
(r->argc > 0) ? r->argv[0] : 0,
|
|
(r->argc > 1) ? r->argv[1] : 0);
|
|
}
|
|
container.length = cpu_to_le32(length);
|
|
container.type = cpu_to_le16(TYPE_RESPONSE);
|
|
container.code = cpu_to_le16(r->code);
|
|
container.trans = cpu_to_le32(r->trans);
|
|
for (i = 0; i < r->argc; i++) {
|
|
params[i] = cpu_to_le32(r->argv[i]);
|
|
}
|
|
usb_packet_copy(p, &container, sizeof(container));
|
|
usb_packet_copy(p, ¶ms, length - sizeof(container));
|
|
g_free(s->result);
|
|
s->result = NULL;
|
|
}
|
|
break;
|
|
case EP_DATA_OUT:
|
|
if (p->iov.size < sizeof(container)) {
|
|
trace_usb_mtp_stall(s->dev.addr, "packet too small");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
if ((s->data_out != NULL) && !s->data_out->first) {
|
|
container_type = TYPE_DATA;
|
|
} else {
|
|
usb_packet_copy(p, &container, sizeof(container));
|
|
container_type = le16_to_cpu(container.type);
|
|
}
|
|
switch (container_type) {
|
|
case TYPE_COMMAND:
|
|
if (s->data_in || s->data_out || s->result) {
|
|
trace_usb_mtp_stall(s->dev.addr, "transaction inflight");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
cmd.code = le16_to_cpu(container.code);
|
|
cmd.argc = (le32_to_cpu(container.length) - sizeof(container))
|
|
/ sizeof(uint32_t);
|
|
cmd.trans = le32_to_cpu(container.trans);
|
|
if (cmd.argc > ARRAY_SIZE(cmd.argv)) {
|
|
cmd.argc = ARRAY_SIZE(cmd.argv);
|
|
}
|
|
if (p->iov.size < sizeof(container) + cmd.argc * sizeof(uint32_t)) {
|
|
trace_usb_mtp_stall(s->dev.addr, "packet too small");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
usb_packet_copy(p, ¶ms, cmd.argc * sizeof(uint32_t));
|
|
for (i = 0; i < cmd.argc; i++) {
|
|
cmd.argv[i] = le32_to_cpu(params[i]);
|
|
}
|
|
trace_usb_mtp_command(s->dev.addr, cmd.code, cmd.trans,
|
|
(cmd.argc > 0) ? cmd.argv[0] : 0,
|
|
(cmd.argc > 1) ? cmd.argv[1] : 0,
|
|
(cmd.argc > 2) ? cmd.argv[2] : 0,
|
|
(cmd.argc > 3) ? cmd.argv[3] : 0,
|
|
(cmd.argc > 4) ? cmd.argv[4] : 0);
|
|
usb_mtp_command(s, &cmd);
|
|
break;
|
|
case TYPE_DATA:
|
|
/* One of the previous transfers has already errored but the
|
|
* responder is still sending data associated with it
|
|
*/
|
|
if (s->result != NULL) {
|
|
return;
|
|
}
|
|
usb_mtp_get_data(s, &container, p);
|
|
break;
|
|
default:
|
|
/* not needed as long as the mtp device is read-only */
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
break;
|
|
case EP_EVENT:
|
|
if (!QTAILQ_EMPTY(&s->events)) {
|
|
struct MTPMonEntry *e = QTAILQ_LAST(&s->events);
|
|
uint32_t handle;
|
|
int len = sizeof(container) + sizeof(uint32_t);
|
|
|
|
if (p->iov.size < len) {
|
|
trace_usb_mtp_stall(s->dev.addr,
|
|
"packet too small to send event");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
|
|
QTAILQ_REMOVE(&s->events, e, next);
|
|
container.length = cpu_to_le32(len);
|
|
container.type = cpu_to_le32(TYPE_EVENT);
|
|
container.code = cpu_to_le16(e->event);
|
|
container.trans = 0; /* no trans specific events */
|
|
handle = cpu_to_le32(e->handle);
|
|
usb_packet_copy(p, &container, sizeof(container));
|
|
usb_packet_copy(p, &handle, sizeof(uint32_t));
|
|
g_free(e);
|
|
return;
|
|
}
|
|
p->status = USB_RET_NAK;
|
|
return;
|
|
default:
|
|
trace_usb_mtp_stall(s->dev.addr, "invalid endpoint");
|
|
p->status = USB_RET_STALL;
|
|
return;
|
|
}
|
|
|
|
if (p->actual_length == 0) {
|
|
trace_usb_mtp_nak(s->dev.addr, p->ep->nr);
|
|
p->status = USB_RET_NAK;
|
|
return;
|
|
} else {
|
|
trace_usb_mtp_xfer(s->dev.addr, p->ep->nr, p->actual_length,
|
|
p->iov.size);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void usb_mtp_realize(USBDevice *dev, Error **errp)
|
|
{
|
|
MTPState *s = USB_MTP(dev);
|
|
|
|
if ((s->root == NULL) || !g_path_is_absolute(s->root)) {
|
|
error_setg(errp, "usb-mtp: rootdir must be configured and be an absolute path");
|
|
return;
|
|
}
|
|
|
|
if (access(s->root, R_OK) != 0) {
|
|
error_setg(errp, "usb-mtp: rootdir does not exist/not readable");
|
|
return;
|
|
} else if (!s->readonly && access(s->root, W_OK) != 0) {
|
|
error_setg(errp, "usb-mtp: rootdir does not have write permissions");
|
|
return;
|
|
}
|
|
|
|
/* Mark store as RW */
|
|
if (!s->readonly) {
|
|
s->flags |= (1 << MTP_FLAG_WRITABLE);
|
|
}
|
|
|
|
if (s->desc == NULL) {
|
|
/*
|
|
* This does not check if path exists
|
|
* but we have the checks above
|
|
*/
|
|
s->desc = g_path_get_basename(s->root);
|
|
}
|
|
|
|
usb_desc_create_serial(dev);
|
|
usb_desc_init(dev);
|
|
QTAILQ_INIT(&s->objects);
|
|
|
|
}
|
|
|
|
static const VMStateDescription vmstate_usb_mtp = {
|
|
.name = "usb-mtp",
|
|
.unmigratable = 1,
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_USB_DEVICE(dev, MTPState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static Property mtp_properties[] = {
|
|
DEFINE_PROP_STRING("rootdir", MTPState, root),
|
|
DEFINE_PROP_STRING("desc", MTPState, desc),
|
|
DEFINE_PROP_BOOL("readonly", MTPState, readonly, true),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void usb_mtp_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
|
|
|
|
uc->realize = usb_mtp_realize;
|
|
uc->product_desc = "QEMU USB MTP";
|
|
uc->usb_desc = &desc;
|
|
uc->cancel_packet = usb_mtp_cancel_packet;
|
|
uc->handle_attach = usb_desc_attach;
|
|
uc->handle_reset = usb_mtp_handle_reset;
|
|
uc->handle_control = usb_mtp_handle_control;
|
|
uc->handle_data = usb_mtp_handle_data;
|
|
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
|
|
dc->desc = "USB Media Transfer Protocol device";
|
|
dc->fw_name = "mtp";
|
|
dc->vmsd = &vmstate_usb_mtp;
|
|
device_class_set_props(dc, mtp_properties);
|
|
}
|
|
|
|
static const TypeInfo mtp_info = {
|
|
.name = TYPE_USB_MTP,
|
|
.parent = TYPE_USB_DEVICE,
|
|
.instance_size = sizeof(MTPState),
|
|
.class_init = usb_mtp_class_initfn,
|
|
};
|
|
|
|
static void usb_mtp_register_types(void)
|
|
{
|
|
type_register_static(&mtp_info);
|
|
}
|
|
|
|
type_init(usb_mtp_register_types)
|