+ cfg = malloc(sizeof(*cfg));
+
+ if (cfg == NULL)
+ return NULL;
+
+ cfg->flags = flags;
+ cfg->num_sections = 0;
+
+ /* allocate first batch of sections and entries */
+ cfg->sections = malloc(sizeof(struct rte_cfgfile_section) *
+ CFG_ALLOC_SECTION_BATCH);
+
+ if (cfg->sections == NULL)
+ goto error1;
+
+ cfg->allocated_sections = CFG_ALLOC_SECTION_BATCH;
+
+ for (i = 0; i < CFG_ALLOC_SECTION_BATCH; i++) {
+ cfg->sections[i].entries = malloc(sizeof(
+ struct rte_cfgfile_entry) * CFG_ALLOC_ENTRY_BATCH);
+
+ if (cfg->sections[i].entries == NULL)
+ goto error1;
+
+ cfg->sections[i].num_entries = 0;
+ cfg->sections[i].allocated_entries = CFG_ALLOC_ENTRY_BATCH;
+ }
+
+ if (flags & CFG_FLAG_GLOBAL_SECTION)
+ rte_cfgfile_add_section(cfg, "GLOBAL");
+
+ return cfg;
+error1:
+ if (cfg->sections != NULL) {
+ for (i = 0; i < cfg->allocated_sections; i++) {
+ if (cfg->sections[i].entries != NULL) {
+ free(cfg->sections[i].entries);
+ cfg->sections[i].entries = NULL;
+ }
+ }
+ free(cfg->sections);
+ cfg->sections = NULL;
+ }
+ free(cfg);
+ return NULL;
+}
+
+int
+rte_cfgfile_add_section(struct rte_cfgfile *cfg, const char *sectionname)
+{
+ int i;
+
+ if (cfg == NULL)
+ return -EINVAL;
+
+ if (sectionname == NULL)
+ return -EINVAL;
+
+ /* resize overall struct if we don't have room for more sections */
+ if (cfg->num_sections == cfg->allocated_sections) {
+
+ struct rte_cfgfile_section *n_sections =
+ realloc(cfg->sections,
+ sizeof(struct rte_cfgfile_section) *
+ ((cfg->allocated_sections) +
+ CFG_ALLOC_SECTION_BATCH));
+
+ if (n_sections == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < CFG_ALLOC_SECTION_BATCH; i++) {
+ n_sections[i + cfg->allocated_sections].num_entries = 0;
+ n_sections[i +
+ cfg->allocated_sections].allocated_entries = 0;
+ n_sections[i + cfg->allocated_sections].entries = NULL;
+ }
+ cfg->sections = n_sections;
+ cfg->allocated_sections += CFG_ALLOC_SECTION_BATCH;
+ }
+
+ strlcpy(cfg->sections[cfg->num_sections].name, sectionname,
+ sizeof(cfg->sections[0].name));
+ cfg->sections[cfg->num_sections].num_entries = 0;
+ cfg->num_sections++;
+
+ return 0;
+}
+
+int rte_cfgfile_add_entry(struct rte_cfgfile *cfg,
+ const char *sectionname, const char *entryname,
+ const char *entryvalue)
+{
+ int ret;
+
+ if ((cfg == NULL) || (sectionname == NULL) || (entryname == NULL)
+ || (entryvalue == NULL))
+ return -EINVAL;
+
+ if (rte_cfgfile_has_entry(cfg, sectionname, entryname) != 0)
+ return -EEXIST;
+
+ /* search for section pointer by sectionname */
+ struct rte_cfgfile_section *curr_section = _get_section(cfg,
+ sectionname);
+ if (curr_section == NULL)
+ return -EINVAL;
+
+ ret = _add_entry(curr_section, entryname, entryvalue);
+
+ return ret;
+}
+
+int rte_cfgfile_set_entry(struct rte_cfgfile *cfg, const char *sectionname,
+ const char *entryname, const char *entryvalue)
+{
+ int i;
+
+ if ((cfg == NULL) || (sectionname == NULL) || (entryname == NULL))
+ return -EINVAL;
+
+ /* search for section pointer by sectionname */
+ struct rte_cfgfile_section *curr_section = _get_section(cfg,
+ sectionname);
+ if (curr_section == NULL)
+ return -EINVAL;
+
+ if (entryvalue == NULL)
+ entryvalue = "";
+
+ for (i = 0; i < curr_section->num_entries; i++)
+ if (!strcmp(curr_section->entries[i].name, entryname)) {
+ strlcpy(curr_section->entries[i].value, entryvalue,
+ sizeof(curr_section->entries[i].value));
+ return 0;
+ }
+ printf("Error - entry name doesn't exist\n");
+ return -EINVAL;
+}
+
+int rte_cfgfile_save(struct rte_cfgfile *cfg, const char *filename)