* for new entries do we add in */
#define CFG_ALLOC_ENTRY_BATCH 16
-static unsigned
-_strip(char *str, unsigned len)
-{
- int newlen = len;
- if (len == 0)
- return 0;
-
- if (isspace(str[len-1])) {
- /* strip trailing whitespace */
- while (newlen > 0 && isspace(str[newlen - 1]))
- str[--newlen] = '\0';
- }
-
- if (isspace(str[0])) {
- /* strip leading whitespace */
- int i,start = 1;
- while (isspace(str[start]) && start < newlen)
- start++
- ; /* do nothing */
- newlen -= start;
- for (i = 0; i < newlen; i++)
- str[i] = str[i+start];
- str[i] = '\0';
- }
- return newlen;
-}
-
-struct cfg_file *
-cfg_load(const char *filename, int flags)
-{
- int allocated_sections = CFG_ALLOC_SECTION_BATCH;
- int allocated_entries = 0;
- int curr_section = -1;
- int curr_entry = -1;
- char buffer[256];
- int lineno = 0;
- struct cfg_file *cfg = NULL;
-
- FILE *f = fopen(filename, "r");
- if (f == NULL)
- return NULL;
-
- cfg = malloc(sizeof(*cfg) + sizeof(cfg->sections[0]) * allocated_sections);
- if (cfg == NULL)
- goto error2;
-
- memset(cfg->sections, 0, sizeof(cfg->sections[0]) * allocated_sections);
-
- while (fgets(buffer, sizeof(buffer), f) != NULL) {
- char *pos = NULL;
- size_t len = strnlen(buffer, sizeof(buffer));
- lineno++;
- if (len >=sizeof(buffer) - 1 && buffer[len-1] != '\n'){
- printf("Error line %d - no \\n found on string. "
- "Check if line too long\n", lineno);
- goto error1;
- }
- if ((pos = memchr(buffer, ';', sizeof(buffer))) != NULL) {
- *pos = '\0';
- len = pos - buffer;
- }
-
- len = _strip(buffer, len);
- if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL)
- continue;
-
- if (buffer[0] == '[') {
- /* section heading line */
- char *end = memchr(buffer, ']', len);
- if (end == NULL) {
- printf("Error line %d - no terminating '[' found\n", lineno);
- goto error1;
- }
- *end = '\0';
- _strip(&buffer[1], end - &buffer[1]);
-
- /* close off old section and add start new one */
- if (curr_section >= 0)
- cfg->sections[curr_section]->num_entries = curr_entry + 1;
- curr_section++;
-
- /* resize overall struct if we don't have room for more sections */
- if (curr_section == allocated_sections) {
- allocated_sections += CFG_ALLOC_SECTION_BATCH;
- struct cfg_file *n_cfg = realloc(cfg, sizeof(*cfg) +
- sizeof(cfg->sections[0]) * allocated_sections);
- if (n_cfg == NULL) {
- printf("Error - no more memory\n");
- goto error1;
- }
- cfg = n_cfg;
- }
-
- /* allocate space for new section */
- allocated_entries = CFG_ALLOC_ENTRY_BATCH;
- curr_entry = -1;
- cfg->sections[curr_section] = malloc(sizeof(*cfg->sections[0]) +
- sizeof(cfg->sections[0]->entries[0]) * allocated_entries);
- if (cfg->sections[curr_section] == NULL) {
- printf("Error - no more memory\n");
- goto error1;
- }
-
- snprintf(cfg->sections[curr_section]->name,
- sizeof(cfg->sections[0]->name),
- "%s", &buffer[1]);
- }
- else {
- /* value line */
- if (curr_section < 0) {
- printf("Error line %d - value outside of section\n", lineno);
- goto error1;
- }
-
- struct cfg_section *sect = cfg->sections[curr_section];
- char *split[2];
- if (rte_strsplit(buffer, sizeof(buffer), split, 2, '=') != 2) {
- printf("Error at line %d - cannot split string\n", lineno);
- goto error1;
- }
-
- curr_entry++;
- if (curr_entry == allocated_entries) {
- allocated_entries += CFG_ALLOC_ENTRY_BATCH;
- struct cfg_section *n_sect = realloc(sect, sizeof(*sect) +
- sizeof(sect->entries[0]) * allocated_entries);
- if (n_sect == NULL) {
- printf("Error - no more memory\n");
- goto error1;
- }
- sect = cfg->sections[curr_section] = n_sect;
- }
-
- sect->entries[curr_entry] = malloc(sizeof(*sect->entries[0]));
- if (sect->entries[curr_entry] == NULL) {
- printf("Error - no more memory\n");
- goto error1;
- }
-
- struct cfg_entry *entry = sect->entries[curr_entry];
- snprintf(entry->name, sizeof(entry->name), "%s", split[0]);
- snprintf(entry->value, sizeof(entry->value), "%s", split[1]);
- _strip(entry->name, strnlen(entry->name, sizeof(entry->name)));
- _strip(entry->value, strnlen(entry->value, sizeof(entry->value)));
- }
- }
- fclose(f);
- cfg->flags = flags;
- cfg->sections[curr_section]->num_entries = curr_entry + 1;
- cfg->num_sections = curr_section + 1;
- return cfg;
-
-error1:
- cfg_close(cfg);
-error2:
- fclose(f);
- return NULL;
-}
-
-
-int cfg_close(struct cfg_file *cfg)
-{
- int i, j;
-
- if (cfg == NULL)
- return -1;
-
- for(i = 0; i < cfg->num_sections; i++) {
- if (cfg->sections[i] != NULL) {
- if (cfg->sections[i]->num_entries) {
- for(j = 0; j < cfg->sections[i]->num_entries; j++) {
- if (cfg->sections[i]->entries[j] != NULL)
- free(cfg->sections[i]->entries[j]);
- }
- }
- free(cfg->sections[i]);
- }
- }
- free(cfg);
-
- return 0;
-}
-
int
cfg_load_port(struct rte_cfgfile *cfg, struct rte_sched_port_params *port_params)
{
git.droids-corp.org / dpdk.git / blobdiff