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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Gralloc"
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <cutils/log.h>
#include <cutils/native_handle.h>
native_handle* native_handle_create(int numFds, int numInts)
{
native_handle* h = malloc(
sizeof(native_handle) + sizeof(int)*(numFds+numInts));
h->version = sizeof(native_handle);
h->numFds = numFds;
h->numInts = numInts;
return h;
}
int native_handle_delete(native_handle* h)
{
if (h) {
if (h->version != sizeof(native_handle))
return -EINVAL;
free(h);
}
return 0;
}
int native_handle_dup(native_handle* lhs, native_handle const* rhs)
{
if (rhs->version != sizeof(native_handle))
return -EINVAL;
if (lhs->version != sizeof(native_handle))
return -EINVAL;
const int numFds = rhs->numFds;
const int numInts = rhs->numInts;
if (lhs->numFds == 0 && lhs->numInts == 0) {
lhs->numFds = numFds;
lhs->numInts = numInts;
return 0;
}
if (lhs->numFds != numFds)
return -EINVAL;
if (lhs->numInts != numInts)
return -EINVAL;
int i;
for (i=0 ; i<numFds ; i++) {
lhs->data[i] = dup( rhs->data[i] );
}
memcpy(&lhs->data[i], &rhs->data[i], numInts*sizeof(int));
return 0;
}
int native_handle_close(const native_handle* h)
{
if (h->version != sizeof(native_handle))
return -EINVAL;
const int numFds = h->numFds;
int i;
for (i=0 ; i<numFds ; i++) {
close(h->data[i]);
}
return 0;
}
native_handle* native_handle_copy(const native_handle* rhs)
{
if (rhs == 0)
return 0;
native_handle* lhs = native_handle_create(rhs->numFds, rhs->numInts);
if (native_handle_dup(lhs, rhs) < 0) {
native_handle_delete(lhs);
lhs = 0;
}
return lhs;
}
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