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Commit fd3ea3d1 authored by Chia-I Wu's avatar Chia-I Wu
Browse files

Add native_handle_clone 

libhwbinder's Parcel::readNativeHandleNoDup returns a temporary
native_handle_t.  We want a way to save the temporary handle for later
use.

Change-Id: I16f32043aa8b7d2c0aa57d67551500259b411410
parent aa00f585

include/cutils/native_handle.h

+9 −0
Original line number Diff line number Diff line
@@ -49,6 +49,15 @@ int native_handle_close(const native_handle_t* h); 
 */

native_handle_t* native_handle_create(int numFds, int numInts);



/*

 * native_handle_clone

 *

 * creates a native_handle_t and initializes it from another native_handle_t.

 * Must be destroyed with native_handle_delete().

 *

 */

native_handle_t* native_handle_clone(const native_handle_t* handle);



/*

 * native_handle_delete

 *

libcutils/native_handle.c

+21 −0
Original line number Diff line number Diff line
@@ -44,6 +44,27 @@ native_handle_t* native_handle_create(int numFds, int numInts) 
    return h;

}



native_handle_t* native_handle_clone(const native_handle_t* handle)

{

    native_handle_t* clone = native_handle_create(handle->numFds, handle->numInts);

    int i;



    for (i = 0; i < handle->numFds; i++) {

        clone->data[i] = dup(handle->data[i]);

        if (clone->data[i] < 0) {

            clone->numFds = i;

            native_handle_close(clone);

            native_handle_delete(clone);

            return NULL;

        }

    }



    memcpy(&clone->data[handle->numFds], &handle->data[handle->numFds],

            sizeof(int) * handle->numInts);



    return clone;

}



int native_handle_delete(native_handle_t* h)

{

    if (h) {