diff options
Diffstat (limited to 'common/elapi/elapi_basic.c')
-rw-r--r-- | common/elapi/elapi_basic.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/common/elapi/elapi_basic.c b/common/elapi/elapi_basic.c new file mode 100644 index 00000000..8c7ddb7d --- /dev/null +++ b/common/elapi/elapi_basic.c @@ -0,0 +1,98 @@ +/* + 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; +} |