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/* Copyright (c) 2018, Linaro Limited
* Copyright (c) 2020, Nokia
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libconfig.h>
#include <odp/api/version.h>
#include <odp_global_data.h>
#include <odp_debug_internal.h>
#include <odp_libconfig_internal.h>
#include <odp_libconfig_config.h>
int _odp_libconfig_init_global(void)
{
const char *filename;
const char *vers;
const char *vers_rt;
const char *impl;
const char *impl_rt;
config_t *config = &odp_global_ro.libconfig_default;
config_t *config_rt = &odp_global_ro.libconfig_runtime;
const char *impl_field = "odp_implementation";
const char *vers_field = "config_file_version";
config_init(config);
config_init(config_rt);
odp_global_ro.has_config_rt = 0;
if (!config_read_string(config, config_builtin)) {
ODP_ERR("Failed to read default config: %s(%d): %s\n",
config_error_file(config), config_error_line(config),
config_error_text(config));
goto fail;
}
filename = getenv("ODP_CONFIG_FILE");
if (filename == NULL)
return 0;
ODP_PRINT("ODP CONFIG FILE: %s\n", filename);
if (!config_read_file(config_rt, filename)) {
ODP_PRINT(" ERROR: failed to read config file: %s(%d): %s\n\n",
config_error_file(config_rt),
config_error_line(config_rt),
config_error_text(config_rt));
goto fail;
}
/* Check runtime configuration's implementation name and version */
if (!config_lookup_string(config, impl_field, &impl) ||
!config_lookup_string(config_rt, impl_field, &impl_rt)) {
ODP_PRINT(" ERROR: missing mandatory field: %s\n\n",
impl_field);
goto fail;
}
if (!config_lookup_string(config, vers_field, &vers) ||
!config_lookup_string(config_rt, vers_field, &vers_rt)) {
ODP_PRINT(" ERROR: missing mandatory field: %s\n\n",
vers_field);
goto fail;
}
if (strcmp(impl, impl_rt)) {
ODP_PRINT(" ERROR: ODP implementation name mismatch:\n"
" Expected: \"%s\"\n"
" Found: \"%s\"\n\n", impl, impl_rt);
goto fail;
}
if (strcmp(vers, vers_rt)) {
ODP_PRINT(" ERROR: config file version number mismatch:\n"
" Expected: \"%s\"\n"
" Found: \"%s\"\n\n", vers, vers_rt);
goto fail;
}
odp_global_ro.has_config_rt = 1;
return 0;
fail:
ODP_ERR("Config file failure\n");
config_destroy(config);
config_destroy(config_rt);
return -1;
}
int _odp_libconfig_term_global(void)
{
config_destroy(&odp_global_ro.libconfig_default);
config_destroy(&odp_global_ro.libconfig_runtime);
return 0;
}
int _odp_libconfig_lookup_int(const char *path, int *value)
{
int ret_def = CONFIG_FALSE;
int ret_rt = CONFIG_FALSE;
ret_def = config_lookup_int(&odp_global_ro.libconfig_default, path,
value);
/* Runtime option overrides default value */
ret_rt = config_lookup_int(&odp_global_ro.libconfig_runtime, path,
value);
return (ret_def == CONFIG_TRUE || ret_rt == CONFIG_TRUE) ? 1 : 0;
}
int _odp_libconfig_lookup_array(const char *path, int value[], int max_num)
{
const config_t *config;
config_setting_t *setting;
int num, i, j;
int num_out = 0;
for (j = 0; j < 2; j++) {
if (j == 0)
config = &odp_global_ro.libconfig_default;
else
config = &odp_global_ro.libconfig_runtime;
setting = config_lookup(config, path);
/* Runtime config may not define the array, whereas
* the default config has it always defined. When the array
* is defined, it must be correctly formatted. */
if (setting == NULL)
continue;
if (config_setting_is_array(setting) == CONFIG_FALSE)
return 0;
num = config_setting_length(setting);
if (num <= 0 || num > max_num)
return 0;
for (i = 0; i < num; i++)
value[i] = config_setting_get_int_elem(setting, i);
num_out = num;
}
/* Number of elements copied */
return num_out;
}
static int lookup_int(config_t *cfg,
const char *base_path,
const char *local_path,
const char *name,
int *value)
{
char path[256];
if (local_path) {
snprintf(path, sizeof(path), "%s.%s.%s", base_path,
local_path, name);
if (config_lookup_int(cfg, path, value) == CONFIG_TRUE)
return 1;
}
snprintf(path, sizeof(path), "%s.%s", base_path, name);
if (config_lookup_int(cfg, path, value) == CONFIG_TRUE)
return 1;
return 0;
}
int _odp_libconfig_lookup_ext_int(const char *base_path,
const char *local_path,
const char *name,
int *value)
{
if (lookup_int(&odp_global_ro.libconfig_runtime,
base_path, local_path, name, value))
return 1;
if (lookup_int(&odp_global_ro.libconfig_default,
base_path, local_path, name, value))
return 1;
return 0;
}
int _odp_libconfig_print(void)
{
int c;
/* Temp file for config_write() output. Suppress Coverity warning about tmpfile() usage. */
/* coverity[secure_temp] */
FILE *file = tmpfile();
if (file == NULL)
return -1;
if (fprintf(file,
"\nODP_CONFIG_FILE default values:\n"
"-------------------------------\n\n") < 0)
goto fail;
config_write(&odp_global_ro.libconfig_default, file);
if (odp_global_ro.has_config_rt) {
if (fprintf(file,
"\nODP_CONFIG_FILE override values:\n"
"--------------------------------\n\n") < 0)
goto fail;
config_write(&odp_global_ro.libconfig_runtime, file);
}
/* Print temp file to the log */
rewind(file);
while ((c = fgetc(file)) != EOF)
ODP_PRINT("%c", (char)c);
fclose(file);
return 0;
fail:
fclose(file);
return -1;
}
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