a63a9ec808
This reverts commit 7097f052d9.
libnl_2 needs to stay in AOSP for now for compatibility with
GPL test builds.
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* NOTICE: This is a clean room re-implementation of libnl */
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#include <malloc.h>
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#include "netlink-types.h"
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#include "netlink/handlers.h"
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/* Allocate a new callback handle. */
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struct nl_cb *nl_cb_alloc(enum nl_cb_kind kind)
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{
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struct nl_cb *cb;
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cb = (struct nl_cb *) malloc(sizeof(struct nl_cb));
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if (cb == NULL)
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goto fail;
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memset(cb, 0, sizeof(*cb));
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return nl_cb_get(cb);
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fail:
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return NULL;
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}
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/* Clone an existing callback handle */
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struct nl_cb *nl_cb_clone(struct nl_cb *orig)
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{
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struct nl_cb *new_cb;
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new_cb = nl_cb_alloc(NL_CB_DEFAULT);
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if (new_cb == NULL)
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goto fail;
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/* Copy original and set refcount to 1 */
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memcpy(new_cb, orig, sizeof(*orig));
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new_cb->cb_refcnt = 1;
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return new_cb;
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fail:
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return NULL;
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}
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/* Set up a callback. */
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int nl_cb_set(struct nl_cb *cb, enum nl_cb_type type, enum nl_cb_kind kind, \
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nl_recvmsg_msg_cb_t func, void *arg)
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{
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cb->cb_set[type] = func;
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cb->cb_args[type] = arg;
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return 0;
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}
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/* Set up an error callback. */
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int nl_cb_err(struct nl_cb *cb, enum nl_cb_kind kind, \
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nl_recvmsg_err_cb_t func, void *arg)
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{
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cb->cb_err = func;
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cb->cb_err_arg = arg;
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return 0;
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}
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struct nl_cb *nl_cb_get(struct nl_cb *cb)
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{
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cb->cb_refcnt++;
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return cb;
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}
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void nl_cb_put(struct nl_cb *cb)
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{
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if (!cb)
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return;
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cb->cb_refcnt--;
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if (cb->cb_refcnt <= 0)
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free(cb);
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}
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