/*

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

#include <sys/mdb_modapi.h>

#include "Xserver_mdb.h"

#include "xorg-server.h"

#include "inputstr.h"

struct inputdev_walk_data {

    InputInfo 		inputInfo;

    DeviceIntRec	dev;

};

/*

 * Initialize the inputdev walker by either using the given starting address,

 * or reading the value of the server's "inputInfo" pointer.  We also allocate

 * a struct for storage, and save this using the walk_data pointer.

 */

_X_HIDDEN int

inputdev_walk_init(mdb_walk_state_t *wsp)

{

    uintptr_t inputInfoPtr;

    struct inputdev_walk_data *iwda;

    wsp->walk_data = mdb_alloc(sizeof (struct inputdev_walk_data), UM_SLEEP);

    iwda = (struct inputdev_walk_data *) wsp->walk_data;

    if (mdb_readsym(&(iwda->inputInfo), sizeof (InputInfo), "inputInfo") == -1)

    {

	mdb_warn("failed to read inputInfo data", inputInfoPtr);

	return (WALK_ERR);

    }

    if (wsp->walk_addr == NULL) {

	wsp->walk_addr = (uintptr_t) iwda->inputInfo.devices;

    }

    return (WALK_NEXT);

}

/*

 * At each step, read a device struct into our private storage, and then invoke

 * the callback function.  We terminate when we reach the end of the inputdevs

 * array.

 */

_X_HIDDEN int

inputdev_walk_step(mdb_walk_state_t *wsp)

{

    int status;

    uintptr_t inputdevPtr;

    struct inputdev_walk_data *iwda

	= (struct inputdev_walk_data *) wsp->walk_data;

    if (wsp->walk_addr == NULL)

	return (WALK_DONE);

    if (mdb_vread(&(iwda->dev), sizeof (DeviceIntRec), wsp->walk_addr) == -1) {

	mdb_warn("failed to read DeviceIntRec at %p", wsp->walk_addr);

	return (WALK_DONE);

    }

    status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,

				wsp->walk_cbdata);

    wsp->walk_addr = (uintptr_t) iwda->dev.next;

    return (status);

}

/*

 * The walker's fini function is invoked at the end of each walk.  Since we

 * dynamically allocated data in client_walk_init, we must free it now.

 */

_X_HIDDEN void

inputdev_walk_fini(mdb_walk_state_t *wsp)

{

    mdb_free(wsp->walk_data, sizeof (struct inputdev_walk_data));

}

_X_HIDDEN int

inputdev_grabs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)

{

    uintptr_t inputdevP;

    DeviceIntPtr dev;

    DeviceIntRec devRec;

    const char *type;

    char devName[32];

    InputInfo 		inputInfo;

    GrabPtr	grabP;

    if (argc != 0)

	return (DCMD_USAGE);

    /*

     * If no inputdev address was specified on the command line, we can

     * print out all inputdevs by invoking the walker, using this

     * dcmd itself as the callback.

     */

    if (!(flags & DCMD_ADDRSPEC)) {

	if (mdb_walk_dcmd("inputdev_walk", "inputdev_grabs",

			  argc, argv) == -1) {

	    mdb_warn("failed to walk 'inputdev_walk'");

	    return (DCMD_ERR);

	}

	return (DCMD_OK);

    }

    if (mdb_vread(&devRec, sizeof (DeviceIntRec), addr) == -1) {

	mdb_warn("failed to read DeviceIntRec at %p", addr);

	return (WALK_DONE);

    }

    dev = &devRec;

    if (mdb_readsym(&inputInfo, sizeof (InputInfo), "inputInfo") == -1)

    {

	mdb_warn("failed to read inputInfo data");

	return (DCMD_ERR);

    }

    if (dev == inputInfo.keyboard) {

	type = "* core keyboard *";

    } else if (dev == inputInfo.pointer) {

	type = "* core pointer *";

    } else {

	type = "";

    }

    if (mdb_readstr(devName, sizeof(devName), (uintptr_t) dev->name) == -1) {

	mdb_warn("failed to read InputdevRec.name at %p", dev->name);

	devName[0] = '\0';

    }

    mdb_printf("Device \"%s\" id %d: %s\n", devName, dev->id, type);

    grabP = dev->deviceGrab.grab;

    if (grabP == NULL) {

	mdb_printf("  -- no active grab on device\n\n");

    } else {

	GrabRec grab;

	if (mdb_vread(&grab, sizeof (GrabRec), (uintptr_t) grabP) == -1) {

	    mdb_warn("failed to read GrabRec at %p", grabP);

	} else {

	    int clientid = CLIENT_ID(grab.resource);

	    mdb_printf("  -- active grab %p by client %d\n\n", grab.resource,

		       clientid);

	}

    }

    return (DCMD_OK);

}