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/*
ELAPI
Basic output buffer manipulation routines.
Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE
#include <errno.h> /* for errors */
#include <stdlib.h> /* for free() */
#include "elapi_basic.h"
#include "trace.h"
#include "config.h"
/* Function to free serialized data */
void elapi_free_serialized_data(struct elapi_data_out *out_data)
{
TRACE_FLOW_STRING("elapi_free_serialized_data", "Entry");
if (out_data) {
free(out_data->buffer);
free(out_data);
}
TRACE_FLOW_STRING("elapi_free_serialized_data", "Exit");
}
/* Allocate data structure */
int elapi_alloc_serialized_data(struct elapi_data_out **out_data)
{
int error;
TRACE_FLOW_STRING("elapi_alloc_serialized_data", "Entry");
if (!out_data) {
TRACE_ERROR_STRING("Invalid argument", "");
error = EINVAL;
}
else {
*out_data = (struct elapi_data_out *)calloc(1,
sizeof(struct elapi_data_out));
if (*out_data == NULL) {
TRACE_ERROR_STRING("Failed to allocate memory", "");
error = ENOMEM;
}
else error = EOK;
}
TRACE_FLOW_NUMBER("elapi_alloc_serialized_data. Exit. Returning", error);
return error;
}
/* Grow buffer */
int elapi_grow_data(struct elapi_data_out *out_data,
uint32_t len,
uint32_t block)
{
int error = EOK;
unsigned char *newbuf = NULL;
TRACE_FLOW_STRING("elapi_grow_data", "Entry");
TRACE_INFO_NUMBER("Current length: ", out_data->length);
TRACE_INFO_NUMBER("Current size: ", out_data->size);
TRACE_INFO_NUMBER("Length to have: ", len);
TRACE_INFO_NUMBER("Increment length: ", block);
/* Grow buffer if needed */
while (out_data->length + len >= out_data->size) {
newbuf = realloc(out_data->buffer, out_data->size + block);
if (newbuf == NULL) {
TRACE_ERROR_NUMBER("Error. Failed to allocate memory.", ENOMEM);
return ENOMEM;
}
out_data->buffer = newbuf;
out_data->size += block;
TRACE_INFO_NUMBER("New size: ", out_data->size);
}
TRACE_INFO_NUMBER("Final size: ", out_data->size);
TRACE_FLOW_NUMBER("elapi_grow_data. Exit. Returning", error);
return error;
}
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