+++ /dev/null
-/*
- * lib/data.c Abstract Data
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation version 2.1
- * of the License.
- *
- * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
- */
-
-/**
- * @ingroup utils
- * @defgroup data Abstract Data
- * @{
- */
-
-#include <netlink-local.h>
-#include <netlink/netlink.h>
-#include <netlink/utils.h>
-#include <linux/socket.h>
-
-/**
- * @name General
- * @{
- */
-
-/**
- * Allocate a new abstract data object.
- * @arg buf Data buffer containing the actual data.
- * @arg size Size of data buffer.
- *
- * Allocates a new abstract data and copies the specified data
- * buffer into the new handle.
- *
- * @return Newly allocated data handle or NULL
- */
-struct nl_data *nl_data_alloc(void *buf, size_t size)
-{
- struct nl_data *data;
-
- data = calloc(1, sizeof(*data));
- if (!data)
- goto errout;
-
- data->d_data = calloc(1, size);
- if (!data->d_data) {
- free(data);
- goto errout;
- }
-
- data->d_size = size;
-
- if (buf)
- memcpy(data->d_data, buf, size);
-
- return data;
-errout:
- nl_errno(ENOMEM);
- return NULL;
-}
-
-/**
- * Append data to an abstract data object.
- * @arg data Abstract data object.
- * @arg buf Data buffer containing the data to be appended.
- * @arg size Size of data to be apppended.
- *
- * Reallocates an abstract data and copies the specified data
- * buffer into the new handle.
- *
- * @return 0 on success or a negative error code
- */
-int nl_data_append(struct nl_data *data, void *buf, size_t size)
-{
- if (size < 0)
- BUG();
-
- if (size > 0) {
- data->d_data = realloc(data->d_data, data->d_size + size);
- if (!data->d_data)
- return nl_errno(ENOMEM);
-
- if (buf)
- memcpy(data->d_data + data->d_size, buf, size);
- else
- memset(data->d_data + data->d_size, 0, size);
-
- data->d_size += size;
- }
-
- return 0;
-}
-
-
-/**
- * Free an abstract data object.
- * @arg data Abstract data object.
- */
-void nl_data_free(struct nl_data *data)
-{
- if (data)
- free(data->d_data);
-
- free(data);
-}
-
-/** @} */
-
-/**
- * @name Attribute Access
- * @{
- */
-
-/**
- * Get data buffer of abstract data object.
- * @arg data Abstract data object.
- * @return Data buffer or NULL if empty.
- */
-void *nl_data_get(struct nl_data *data)
-{
- return data->d_size > 0 ? data->d_data : NULL;
-}
-
-/**
- * Get size of data buffer of abstract data object.
- * @arg data Abstract data object.
- * @return Size of data buffer.
- */
-size_t nl_data_get_size(struct nl_data *data)
-{
- return data->d_size;
-}
-
-/** @} */
-
-/**
- * @name Misc
- * @{
- */
-
-/**
- * Compare two abstract data objects.
- * @arg a Abstract data object.
- * @arg b Another abstract data object.
- * @return An integer less than, equal to, or greater than zero if
- * a is found, respectively, to be less than, to match, or
- * be greater than b.
- */
-int nl_data_cmp(struct nl_data *a, struct nl_data *b)
-{
- void *a_ = nl_data_get(a);
- void *b_ = nl_data_get(b);
-
- if (a_ && b_)
- return memcmp(a_, b_, nl_data_get_size(a));
- else
- return -1;
-}
-
-/** @} */
-/** @} */