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[Qemu-devel] [PULL v2 2/2] usb: mtp filesharing
|
From: |
Gerd Hoffmann |
|
Subject: |
[Qemu-devel] [PULL v2 2/2] usb: mtp filesharing |
|
Date: |
Wed, 23 Apr 2014 10:31:01 +0200 |
Implementation of a USB Media Transfer Device device for easy
filesharing. Read-only. No access control inside qemu, it will
happily export any file it is able to open to the guest, i.e.
standard unix access rights for the qemu process apply.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
default-configs/usb.mak | 1 +
hw/usb/Makefile.objs | 4 +
hw/usb/dev-mtp.c | 1103 +++++++++++++++++++++++++++++++++++++++++++++++
trace-events | 21 +
4 files changed, 1129 insertions(+)
create mode 100644 hw/usb/dev-mtp.c
diff --git a/default-configs/usb.mak b/default-configs/usb.mak
index 1bf9075..73d8489 100644
--- a/default-configs/usb.mak
+++ b/default-configs/usb.mak
@@ -1,6 +1,7 @@
CONFIG_USB_TABLET_WACOM=y
CONFIG_USB_STORAGE_BOT=y
CONFIG_USB_STORAGE_UAS=y
+CONFIG_USB_STORAGE_MTP=y
CONFIG_USB_SMARTCARD=y
CONFIG_USB_AUDIO=y
CONFIG_USB_SERIAL=y
diff --git a/hw/usb/Makefile.objs b/hw/usb/Makefile.objs
index 97b4575..17d460c 100644
--- a/hw/usb/Makefile.objs
+++ b/hw/usb/Makefile.objs
@@ -26,6 +26,10 @@ common-obj-y += ccid-card-passthru.o
common-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o
endif
+ifeq ($(CONFIG_POSIX),y)
+common-obj-$(CONFIG_USB_STORAGE_MTP) += dev-mtp.o
+endif
+
# usb redirection
common-obj-$(CONFIG_USB_REDIR) += redirect.o quirks.o
diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
new file mode 100644
index 0000000..8b44032
--- /dev/null
+++ b/hw/usb/dev-mtp.c
@@ -0,0 +1,1103 @@
+/*
+ * Media Transfer Protocol implementation, backed by host filesystem.
+ *
+ * Copyright Red Hat, Inc 2014
+ *
+ * Author:
+ * Gerd Hoffmann <address@hidden>
+ *
+ * This code is licensed under the GPL v2 or later.
+ */
+
+#include <wchar.h>
+#include <dirent.h>
+#include <unistd.h>
+
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+
+#include "qemu-common.h"
+#include "qemu/iov.h"
+#include "trace.h"
+#include "hw/usb.h"
+#include "hw/usb/desc.h"
+
+/* ----------------------------------------------------------------------- */
+
+enum mtp_container_type {
+ TYPE_COMMAND = 1,
+ TYPE_DATA = 2,
+ TYPE_RESPONSE = 3,
+ TYPE_EVENT = 4,
+};
+
+enum mtp_code {
+ /* command codes */
+ CMD_GET_DEVICE_INFO = 0x1001,
+ CMD_OPEN_SESSION = 0x1002,
+ CMD_CLOSE_SESSION = 0x1003,
+ CMD_GET_STORAGE_IDS = 0x1004,
+ CMD_GET_STORAGE_INFO = 0x1005,
+ CMD_GET_NUM_OBJECTS = 0x1006,
+ CMD_GET_OBJECT_HANDLES = 0x1007,
+ CMD_GET_OBJECT_INFO = 0x1008,
+ CMD_GET_OBJECT = 0x1009,
+ CMD_GET_PARTIAL_OBJECT = 0x101b,
+
+ /* response codes */
+ RES_OK = 0x2001,
+ RES_SESSION_NOT_OPEN = 0x2003,
+ RES_INVALID_TRANSACTION_ID = 0x2004,
+ RES_OPERATION_NOT_SUPPORTED = 0x2005,
+ RES_PARAMETER_NOT_SUPPORTED = 0x2006,
+ RES_INVALID_STORAGE_ID = 0x2008,
+ RES_INVALID_OBJECT_HANDLE = 0x2009,
+ RES_SPEC_BY_FORMAT_UNSUPPORTED = 0x2014,
+ RES_INVALID_PARENT_OBJECT = 0x201a,
+ RES_INVALID_PARAMETER = 0x201d,
+ RES_SESSION_ALREADY_OPEN = 0x201e,
+
+ /* format codes */
+ FMT_UNDEFINED_OBJECT = 0x3000,
+ FMT_ASSOCIATION = 0x3001,
+};
+
+typedef struct {
+ uint32_t length;
+ uint16_t type;
+ uint16_t code;
+ uint32_t trans;
+} QEMU_PACKED mtp_container;
+
+/* ----------------------------------------------------------------------- */
+
+typedef struct MTPState MTPState;
+typedef struct MTPControl MTPControl;
+typedef struct MTPData MTPData;
+typedef struct MTPObject MTPObject;
+
+enum {
+ EP_DATA_IN = 1,
+ EP_DATA_OUT,
+ EP_EVENT,
+};
+
+struct MTPControl {
+ uint16_t code;
+ uint32_t trans;
+ int argc;
+ uint32_t argv[5];
+};
+
+struct MTPData {
+ uint16_t code;
+ uint32_t trans;
+ uint32_t offset;
+ uint32_t length;
+ uint32_t alloc;
+ uint8_t *data;
+ bool first;
+ int fd;
+};
+
+struct MTPObject {
+ uint32_t handle;
+ uint16_t format;
+ char *name;
+ char *path;
+ struct stat stat;
+ MTPObject *parent;
+ MTPObject **children;
+ int32_t nchildren;
+ QTAILQ_ENTRY(MTPObject) next;
+};
+
+struct MTPState {
+ USBDevice dev;
+ char *root;
+ char *desc;
+ uint32_t flags;
+
+ MTPData *data_in;
+ MTPData *data_out;
+ MTPControl *result;
+ uint32_t session;
+ uint32_t next_handle;
+
+ QTAILQ_HEAD(, MTPObject) objects;
+};
+
+#define QEMU_STORAGE_ID 0x00010001
+
+#define MTP_FLAG_WRITABLE 0
+
+#define FLAG_SET(_mtp, _flag) ((_mtp)->flags & (1 << (_flag)))
+
+/* ----------------------------------------------------------------------- */
+
+#define MTP_MANUFACTURER "QEMU"
+#define MTP_PRODUCT "QEMU filesharing"
+
+enum {
+ STR_MANUFACTURER = 1,
+ STR_PRODUCT,
+ STR_SERIALNUMBER,
+ STR_CONFIG_FULL,
+ STR_CONFIG_HIGH,
+ STR_CONFIG_SUPER,
+};
+
+static const USBDescStrings desc_strings = {
+ [STR_MANUFACTURER] = MTP_MANUFACTURER,
+ [STR_PRODUCT] = MTP_PRODUCT,
+ [STR_SERIALNUMBER] = "34617",
+ [STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
+ [STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
+ [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)",
+};
+
+static const USBDescIface desc_iface_full = {
+ .bInterfaceNumber = 0,
+ .bNumEndpoints = 3,
+ .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+ .bInterfaceSubClass = 0x01,
+ .bInterfaceProtocol = 0x01,
+ .eps = (USBDescEndpoint[]) {
+ {
+ .bEndpointAddress = USB_DIR_IN | EP_DATA_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = 64,
+ },{
+ .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = 64,
+ },{
+ .bEndpointAddress = USB_DIR_IN | EP_EVENT,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = 8,
+ .bInterval = 0x0a,
+ },
+ }
+};
+
+static const USBDescDevice desc_device_full = {
+ .bcdUSB = 0x0200,
+ .bMaxPacketSize0 = 8,
+ .bNumConfigurations = 1,
+ .confs = (USBDescConfig[]) {
+ {
+ .bNumInterfaces = 1,
+ .bConfigurationValue = 1,
+ .iConfiguration = STR_CONFIG_FULL,
+ .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP,
+ .bMaxPower = 2,
+ .nif = 1,
+ .ifs = &desc_iface_full,
+ },
+ },
+};
+
+static const USBDescIface desc_iface_high = {
+ .bInterfaceNumber = 0,
+ .bNumEndpoints = 3,
+ .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+ .bInterfaceSubClass = 0x01,
+ .bInterfaceProtocol = 0x01,
+ .eps = (USBDescEndpoint[]) {
+ {
+ .bEndpointAddress = USB_DIR_IN | EP_DATA_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = 512,
+ },{
+ .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = 512,
+ },{
+ .bEndpointAddress = USB_DIR_IN | EP_EVENT,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = 8,
+ .bInterval = 0x0a,
+ },
+ }
+};
+
+static const USBDescDevice desc_device_high = {
+ .bcdUSB = 0x0200,
+ .bMaxPacketSize0 = 64,
+ .bNumConfigurations = 1,
+ .confs = (USBDescConfig[]) {
+ {
+ .bNumInterfaces = 1,
+ .bConfigurationValue = 1,
+ .iConfiguration = STR_CONFIG_HIGH,
+ .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP,
+ .bMaxPower = 2,
+ .nif = 1,
+ .ifs = &desc_iface_high,
+ },
+ },
+};
+
+static const USBDescMSOS desc_msos = {
+ .CompatibleID = "MTP",
+ .SelectiveSuspendEnabled = true,
+};
+
+static const USBDesc desc = {
+ .id = {
+ .idVendor = 0x46f4, /* CRC16() of "QEMU" */
+ .idProduct = 0x0004,
+ .bcdDevice = 0,
+ .iManufacturer = STR_MANUFACTURER,
+ .iProduct = STR_PRODUCT,
+ .iSerialNumber = STR_SERIALNUMBER,
+ },
+ .full = &desc_device_full,
+ .high = &desc_device_high,
+ .str = desc_strings,
+ .msos = &desc_msos,
+};
+
+/* ----------------------------------------------------------------------- */
+
+static MTPObject *usb_mtp_object_alloc(MTPState *s, uint32_t handle,
+ MTPObject *parent, char *name)
+{
+ MTPObject *o = g_new0(MTPObject, 1);
+
+ if (name[0] == '.') {
+ goto ignore;
+ }
+
+ o->handle = handle;
+ o->parent = parent;
+ o->name = g_strdup(name);
+ o->nchildren = -1;
+ if (parent == NULL) {
+ o->path = g_strdup(name);
+ } else {
+ o->path = g_strdup_printf("%s/%s", parent->path, name);
+ }
+
+ if (lstat(o->path, &o->stat) != 0) {
+ goto ignore;
+ }
+ if (S_ISREG(o->stat.st_mode)) {
+ o->format = FMT_UNDEFINED_OBJECT;
+ } else if (S_ISDIR(o->stat.st_mode)) {
+ o->format = FMT_ASSOCIATION;
+ } else {
+ goto ignore;
+ }
+
+ if (access(o->path, R_OK) != 0) {
+ goto ignore;
+ }
+
+ fprintf(stderr, "%s: 0x%x %s\n", __func__, o->handle, o->path);
+
+ QTAILQ_INSERT_TAIL(&s->objects, o, next);
+ return o;
+
+ignore:
+ g_free(o->name);
+ g_free(o->path);
+ g_free(o);
+ return NULL;
+}
+
+static void usb_mtp_object_free(MTPState *s, MTPObject *o)
+{
+ int i;
+
+ fprintf(stderr, "%s: 0x%x %s\n", __func__, o->handle, o->path);
+
+ QTAILQ_REMOVE(&s->objects, o, next);
+ for (i = 0; i < o->nchildren; i++) {
+ usb_mtp_object_free(s, o->children[i]);
+ }
+ g_free(o->children);
+ g_free(o->name);
+ g_free(o->path);
+ g_free(o);
+}
+
+static MTPObject *usb_mtp_object_lookup(MTPState *s, uint32_t handle)
+{
+ MTPObject *o;
+
+ QTAILQ_FOREACH(o, &s->objects, next) {
+ if (o->handle == handle) {
+ return o;
+ }
+ }
+ return NULL;
+}
+
+static void usb_mtp_object_readdir(MTPState *s, MTPObject *o)
+{
+ struct dirent *entry;
+ DIR *dir;
+
+ o->nchildren = 0;
+ dir = opendir(o->path);
+ if (!dir) {
+ return;
+ }
+ while ((entry = readdir(dir)) != NULL) {
+ if ((o->nchildren % 32) == 0) {
+ o->children = g_realloc(o->children,
+ (o->nchildren + 32) * sizeof(MTPObject *));
+ }
+ o->children[o->nchildren] =
+ usb_mtp_object_alloc(s, s->next_handle++, o, entry->d_name);
+ if (o->children[o->nchildren] != NULL) {
+ o->nchildren++;
+ }
+ }
+ 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, 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;
+ 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 >> 54) & 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[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);
+ }
+}
+
+static void usb_mtp_add_time(MTPData *data, time_t time)
+{
+ char buf[16];
+ struct tm tm;
+
+ gmtime_r(&time, &tm);
+ strftime(buf, sizeof(buf), "%Y%m%dT%H%M%S", &tm);
+ usb_mtp_add_str(data, buf);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static void usb_mtp_queue_result(MTPState *s, uint16_t code, uint32_t trans,
+ int argc, uint32_t arg0, uint32_t arg1)
+{
+ 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;
+ }
+
+ 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_GET_OBJECT,
+ CMD_GET_PARTIAL_OBJECT,
+ };
+ 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, 0x0100);
+ usb_mtp_add_u32(d, 0xffffffff);
+ usb_mtp_add_u16(d, 0x0101);
+ 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"123456789abcdef123456789abcdef");
+
+ 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, handles[o->nchildren];
+
+ trace_usb_mtp_op_get_object_handles(s->dev.addr, o->handle, o->path);
+
+ for (i = 0; i < o->nchildren; i++) {
+ handles[i] = o->children[i]->handle;
+ }
+ 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);
+ 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);
+ if (d->fd == -1) {
+ 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 = usb_mtp_data_alloc(c);
+ off_t offset;
+
+ trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path,
+ c->argv[1], c->argv[2]);
+
+ d->fd = open(o->path, O_RDONLY);
+ if (d->fd == -1) {
+ return NULL;
+ }
+
+ offset = c->argv[1];
+ if (offset > o->stat.st_size) {
+ offset = o->stat.st_size;
+ }
+ lseek(d->fd, offset, SEEK_SET);
+
+ d->length = c->argv[2];
+ if (d->length > o->stat.st_size - offset) {
+ d->length = o->stat.st_size - offset;
+ }
+
+ return d;
+}
+
+static void usb_mtp_command(MTPState *s, MTPControl *c)
+{
+ MTPData *data_in = NULL;
+ MTPObject *o;
+ uint32_t nres = 0, res0 = 0;
+
+ /* 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);
+ 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);
+ return;
+ }
+ if (c->argv[0] == 0) {
+ usb_mtp_queue_result(s, RES_INVALID_PARAMETER,
+ c->trans, 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);
+ break;
+ case CMD_CLOSE_SESSION:
+ trace_usb_mtp_op_close_session(s->dev.addr);
+ s->session = 0;
+ s->next_handle = 0;
+ 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);
+ 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);
+ return;
+ }
+ if (c->argv[1] != 0x00000000) {
+ usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED,
+ c->trans, 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);
+ return;
+ }
+ if (o->format != FMT_ASSOCIATION) {
+ usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT,
+ c->trans, 0, 0, 0);
+ return;
+ }
+ if (o->nchildren == -1) {
+ 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);
+ 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);
+ return;
+ }
+ if (o->format == FMT_ASSOCIATION) {
+ usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
+ c->trans, 0, 0, 0);
+ return;
+ }
+ data_in = usb_mtp_get_object(s, c, o);
+ if (NULL == data_in) {
+ fprintf(stderr, "%s: TODO: handle error\n", __func__);
+ }
+ break;
+ 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);
+ return;
+ }
+ if (o->format == FMT_ASSOCIATION) {
+ usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE,
+ c->trans, 0, 0, 0);
+ return;
+ }
+ data_in = usb_mtp_get_partial_object(s, c, o);
+ if (NULL == data_in) {
+ fprintf(stderr, "%s: TODO: handle error\n", __func__);
+ }
+ nres = 1;
+ res0 = data_in->length;
+ break;
+ default:
+ fprintf(stderr, "%s: unknown command code 0x%04x\n",
+ __func__, c->code);
+ usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED,
+ c->trans, 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);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static void usb_mtp_handle_reset(USBDevice *dev)
+{
+ MTPState *s = DO_UPCAST(MTPState, dev, dev);
+
+ trace_usb_mtp_reset(s->dev.addr);
+
+ 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;
+
+ 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");
+ p->status = USB_RET_STALL;
+}
+
+static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p)
+{
+ fprintf(stderr, "%s\n", __func__);
+}
+
+static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p)
+{
+ MTPState *s = DO_UPCAST(MTPState, dev, dev);
+ MTPControl cmd;
+ mtp_container container;
+ uint32_t params[5];
+ 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;
+ int dlen = d->length - d->offset;
+ if (d->first) {
+ trace_usb_mtp_data_in(s->dev.addr, d->trans, d->length);
+ 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) {
+ fprintf(stderr, "%s: TODO: handle read error\n", __func__);
+ }
+ 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;
+ }
+ usb_packet_copy(p, &container, sizeof(container));
+ switch (le16_to_cpu(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);
+ 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;
+ default:
+ iov_hexdump(p->iov.iov, p->iov.niov, stderr, "mtp-out", 32);
+ trace_usb_mtp_stall(s->dev.addr, "TODO: implement data-out");
+ p->status = USB_RET_STALL;
+ return;
+ }
+ break;
+ case EP_EVENT:
+ 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 int usb_mtp_initfn(USBDevice *dev)
+{
+ MTPState *s = DO_UPCAST(MTPState, dev, dev);
+
+ usb_desc_create_serial(dev);
+ usb_desc_init(dev);
+ QTAILQ_INIT(&s->objects);
+ if (s->desc == NULL) {
+ s->desc = strrchr(s->root, '/');
+ if (s->desc) {
+ s->desc = g_strdup(s->desc + 1);
+ } else {
+ s->desc = g_strdup("none");
+ }
+ }
+ return 0;
+}
+
+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("root", MTPState, root),
+ DEFINE_PROP_STRING("desc", MTPState, desc),
+ 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->init = usb_mtp_initfn;
+ 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;
+ dc->fw_name = "mtp";
+ dc->vmsd = &vmstate_usb_mtp;
+ dc->props = mtp_properties;
+}
+
+static TypeInfo mtp_info = {
+ .name = "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)
diff --git a/trace-events b/trace-events
index 9303245..6ecaab2 100644
--- a/trace-events
+++ b/trace-events
@@ -433,6 +433,27 @@ usb_uas_tmf_abort_task(int addr, uint16_t tag, uint16_t
task_tag) "dev %d, tag 0
usb_uas_tmf_logical_unit_reset(int addr, uint16_t tag, int lun) "dev %d, tag
0x%x, lun %d"
usb_uas_tmf_unsupported(int addr, uint16_t tag, uint32_t function) "dev %d,
tag 0x%x, function 0x%x"
+# hw/usb/dev-mtp.c
+usb_mtp_reset(int addr) "dev %d"
+usb_mtp_command(int dev, uint16_t code, uint32_t trans, uint32_t arg0,
uint32_t arg1, uint32_t arg2, uint32_t arg3, uint32_t arg4) "dev %d, code 0x%x,
trans 0x%x, args 0x%x, 0x%x, 0x%x, 0x%x, 0x%x"
+usb_mtp_success(int dev, uint32_t trans, uint32_t arg0, uint32_t arg1) "dev
%d, trans 0x%x, args 0x%x, 0x%x"
+usb_mtp_error(int dev, uint16_t code, uint32_t trans, uint32_t arg0, uint32_t
arg1) "dev %d, code 0x%x, trans 0x%x, args 0x%x, 0x%x"
+usb_mtp_data_in(int dev, uint32_t trans, uint32_t len) "dev %d, trans 0x%x,
len %d"
+usb_mtp_data_out(int dev, uint32_t trans, uint32_t len) "dev %d, trans 0x%x,
len %d"
+usb_mtp_xfer(int dev, uint32_t ep, uint32_t dlen, uint32_t plen) "dev %d, ep
%d, %d/%d"
+usb_mtp_nak(int dev, uint32_t ep) "dev %d, ep %d"
+usb_mtp_stall(int dev, const char *reason) "dev %d, reason: %s"
+usb_mtp_op_get_device_info(int dev) "dev %d"
+usb_mtp_op_open_session(int dev) "dev %d"
+usb_mtp_op_close_session(int dev) "dev %d"
+usb_mtp_op_get_storage_ids(int dev) "dev %d"
+usb_mtp_op_get_storage_info(int dev) "dev %d"
+usb_mtp_op_get_num_objects(int dev, uint32_t handle, const char *path) "dev
%d, handle 0x%x, path %s"
+usb_mtp_op_get_object_handles(int dev, uint32_t handle, const char *path) "dev
%d, handle 0x%x, path %s"
+usb_mtp_op_get_object_info(int dev, uint32_t handle, const char *path) "dev
%d, handle 0x%x, path %s"
+usb_mtp_op_get_object(int dev, uint32_t handle, const char *path) "dev %d,
handle 0x%x, path %s"
+usb_mtp_op_get_partial_object(int dev, uint32_t handle, const char *path,
uint32_t offset, uint32_t length) "dev %d, handle 0x%x, path %s, off %d, len %d"
+
# hw/usb/host-libusb.c
usb_host_open_started(int bus, int addr) "dev %d:%d"
usb_host_open_success(int bus, int addr) "dev %d:%d"
--
1.8.3.1