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From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: Isaac Lozano <109lozanoi@gmail.com>, Gerd Hoffmann <kraxel@redhat.com>
Subject: [Qemu-devel] [PULL 5/5] usb-mtp: added object properties
Date: Wed, 14 Sep 2016 11:33:35 +0200	[thread overview]
Message-ID: <1473845615-16982-6-git-send-email-kraxel@redhat.com> (raw)
In-Reply-To: <1473845615-16982-1-git-send-email-kraxel@redhat.com>

From: Isaac Lozano <109lozanoi@gmail.com>

Windows uses object properties to determine the size of a file, so to
add object properties, we must also add a minimum set of new commands
and object properties. Most object properties are data that we already
have, except for the unique persistant object identifier. Windows
doesn't use this property, it seems, so we can cheat a bit and just use
the object handle for it.

Signed-off-by: Isaac Lozano <109lozanoi@gmail.com>
Message-id: a741d0dd380cd7eb1695e1eb34ee6f341183f20a.1470477265.git.109lozanoi@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/dev-mtp.c | 177 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)

diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 869d244..58d95ff 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -48,6 +48,9 @@ enum mtp_code {
     CMD_GET_OBJECT_INFO            = 0x1008,
     CMD_GET_OBJECT                 = 0x1009,
     CMD_GET_PARTIAL_OBJECT         = 0x101b,
+    CMD_GET_OBJECT_PROPS_SUPPORTED = 0x9801,
+    CMD_GET_OBJECT_PROP_DESC       = 0x9802,
+    CMD_GET_OBJECT_PROP_VALUE      = 0x9803,
 
     /* response codes */
     RES_OK                         = 0x2001,
@@ -59,10 +62,12 @@ enum mtp_code {
     RES_INCOMPLETE_TRANSFER        = 0x2007,
     RES_INVALID_STORAGE_ID         = 0x2008,
     RES_INVALID_OBJECT_HANDLE      = 0x2009,
+    RES_INVALID_OBJECT_FORMAT_CODE = 0x200b,
     RES_SPEC_BY_FORMAT_UNSUPPORTED = 0x2014,
     RES_INVALID_PARENT_OBJECT      = 0x201a,
     RES_INVALID_PARAMETER          = 0x201d,
     RES_SESSION_ALREADY_OPEN       = 0x201e,
+    RES_INVALID_OBJECT_PROP_CODE   = 0xA801,
 
     /* format codes */
     FMT_UNDEFINED_OBJECT           = 0x3000,
@@ -72,6 +77,22 @@ enum mtp_code {
     EVT_OBJ_ADDED                  = 0x4002,
     EVT_OBJ_REMOVED                = 0x4003,
     EVT_OBJ_INFO_CHANGED           = 0x4007,
+
+    /* object properties */
+    PROP_STORAGE_ID                = 0xDC01,
+    PROP_OBJECT_FORMAT             = 0xDC02,
+    PROP_OBJECT_COMPRESSED_SIZE    = 0xDC04,
+    PROP_PARENT_OBJECT             = 0xDC0B,
+    PROP_PERSISTENT_UNIQUE_OBJECT_IDENTIFIER = 0xDC41,
+    PROP_NAME                      = 0xDC44,
+};
+
+enum mtp_data_type {
+    DATA_TYPE_UINT16  = 0x0004,
+    DATA_TYPE_UINT32  = 0x0006,
+    DATA_TYPE_UINT64  = 0x0008,
+    DATA_TYPE_UINT128 = 0x000a,
+    DATA_TYPE_STRING  = 0xffff,
 };
 
 typedef struct {
@@ -778,6 +799,9 @@ static MTPData *usb_mtp_get_device_info(MTPState *s, MTPControl *c)
         CMD_GET_OBJECT_INFO,
         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,
@@ -971,6 +995,122 @@ static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c,
     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 persistant 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;
+}
+
 static void usb_mtp_command(MTPState *s, MTPControl *c)
 {
     MTPData *data_in = NULL;
@@ -1118,6 +1258,43 @@ static void usb_mtp_command(MTPState *s, MTPControl *c)
         nres = 1;
         res0 = data_in->length;
         break;
+    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);
+            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);
+            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);
+            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);
+            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);
+            return;
+        }
+        break;
     default:
         trace_usb_mtp_op_unknown(s->dev.addr, c->code);
         usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED,
-- 
1.8.3.1

  parent reply	other threads:[~2016-09-14  9:33 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-14  9:33 [Qemu-devel] [PULL 0/5] usb: large file support for mtp, bugfixes Gerd Hoffmann
2016-09-14  9:33 ` [Qemu-devel] [PULL 1/5] xhci: Fix remainder field for TR_SETUP completion event Gerd Hoffmann
2016-09-14  9:33 ` [Qemu-devel] [PULL 2/5] usb-host: fix streams detection in usb_host_speed_compat Gerd Hoffmann
2016-09-14  9:33 ` [Qemu-devel] [PULL 3/5] usb:xhci:fix memory leak in usb_xhci_exit Gerd Hoffmann
2016-09-14  9:33 ` [Qemu-devel] [PULL 4/5] usb-mtp: fix sending files larger than 4gb Gerd Hoffmann
2016-09-14  9:33 ` Gerd Hoffmann [this message]
2016-09-15 14:49 ` [Qemu-devel] [PULL 0/5] usb: large file support for mtp, bugfixes Peter Maydell

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