int
param_get(param_t param, void *val)
{
int result = -1;
const void *v = param_get_value_ptr(param);
if (val != NULL) {
memcpy(val, v, param_size(param));
result = 0;
}
return result;
}
int
param_get(param_t param, void *val)
{
int result = -1;
param_lock();
if (!handle_in_range(param)) {
return result;
}
union param_value_u value;
if (update_from_shmem(param, &value)) {
set_called_from_get = 1;
param_set_internal(param, &value, true, false, false);
set_called_from_get = 0;
}
const void *v = param_get_value_ptr(param);
if (val != NULL) {
memcpy(val, v, param_size(param));
result = 0;
}
#ifdef ENABLE_SHMEM_DEBUG
if (param_type(param) == PARAM_TYPE_INT32) {
PX4_INFO("param_get for %s : %d\n", param_name(param), ((union param_value_u *)val)->i);
}
else if (param_type(param) == PARAM_TYPE_FLOAT) {
PX4_INFO("param_get for %s : %f\n", param_name(param), (double)((union param_value_u *)val)->f);
}
else {
PX4_INFO("Unknown param type for %s\n", param_name(param));
}
#endif
param_unlock();
return result;
}
static void
do_show_print(void *arg, param_t param)
{
int32_t i;
float f;
const char *search_string = (const char*)arg;
/* print nothing if search string valid and not matching */
if (arg != NULL && (strcmp(search_string, param_name(param) != 0)))
return;
printf("%c %s: ",
param_value_unsaved(param) ? '*' : (param_value_is_default(param) ? ' ' : '+'),
param_name(param));
/*
* This case can be expanded to handle printing common structure types.
*/
switch (param_type(param)) {
case PARAM_TYPE_INT32:
if (!param_get(param, &i)) {
printf("%d\n", i);
return;
}
break;
case PARAM_TYPE_FLOAT:
if (!param_get(param, &f)) {
printf("%4.4f\n", (double)f);
return;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
printf("<struct type %d size %u>\n", 0 + param_type(param), param_size(param));
return;
default:
printf("<unknown type %d>\n", 0 + param_type(param));
return;
}
printf("<error fetching parameter %d>\n", param);
}
int
param_get(param_t param, void *val)
{
int result = -1;
param_lock_reader();
perf_begin(param_get_perf);
const void *v = param_get_value_ptr(param);
if (val && v) {
memcpy(val, v, param_size(param));
result = 0;
}
perf_end(param_get_perf);
param_unlock_reader();
return result;
}
int
param_export(int fd, bool only_unsaved)
{
struct param_wbuf_s *s = NULL;
struct bson_encoder_s encoder;
int result = -1;
param_lock();
bson_encoder_init_file(&encoder, fd);
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
int32_t i;
float f;
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32:
param_get(s->param, &i);
if (bson_encoder_append_int(&encoder, param_name(s->param), i)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_FLOAT:
param_get(s->param, &f);
if (bson_encoder_append_double(&encoder, param_name(s->param), f)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (bson_encoder_append_binary(&encoder,
param_name(s->param),
BSON_BIN_BINARY,
param_size(s->param),
param_get_value_ptr(s->param))) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
default:
debug("unrecognized parameter type");
goto out;
}
}
result = 0;
out:
param_unlock();
if (result == 0) {
result = bson_encoder_fini(&encoder);
}
return result;
}
static int
param_set_internal(param_t param, const void *val, bool mark_saved, bool notify_changes)
{
int result = -1;
bool params_changed = false;
param_lock();
if (param_values == NULL) {
utarray_new(param_values, ¶m_icd);
}
if (param_values == NULL) {
debug("failed to allocate modified values array");
goto out;
}
if (handle_in_range(param)) {
struct param_wbuf_s *s = param_find_changed(param);
if (s == NULL) {
/* construct a new parameter */
struct param_wbuf_s buf = {
.param = param,
.val.p = NULL,
.unsaved = false
};
/* add it to the array and sort */
utarray_push_back(param_values, &buf);
utarray_sort(param_values, param_compare_values);
/* find it after sorting */
s = param_find_changed(param);
}
/* update the changed value */
switch (param_type(param)) {
case PARAM_TYPE_INT32:
s->val.i = *(int32_t *)val;
break;
case PARAM_TYPE_FLOAT:
s->val.f = *(float *)val;
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (s->val.p == NULL) {
s->val.p = malloc(param_size(param));
if (s->val.p == NULL) {
debug("failed to allocate parameter storage");
goto out;
}
}
memcpy(s->val.p, val, param_size(param));
break;
default:
goto out;
}
s->unsaved = !mark_saved;
params_changed = true;
result = 0;
}
out:
param_unlock();
/*
* If we set something, now that we have unlocked, go ahead and advertise that
* a thing has been set.
*/
if (params_changed && notify_changes) {
param_notify_changes();
}
return result;
}
int
param_set(param_t param, const void *val)
{
return param_set_internal(param, val, false, true);
}
int
param_set_no_notification(param_t param, const void *val)
{
return param_set_internal(param, val, false, false);
}
bool
param_used(param_t param)
{
int param_index = param_get_index(param);
if (param_index < 0) {
return false;
}
return param_changed_storage[param_index / bits_per_allocation_unit] &
(1 << param_index % bits_per_allocation_unit);
}
static int
param_set_internal(param_t param, const void *val, bool mark_saved, bool notify_changes)
{
int result = -1;
bool params_changed = false;
param_lock_writer();
perf_begin(param_set_perf);
if (param_values == NULL) {
utarray_new(param_values, ¶m_icd);
}
if (param_values == NULL) {
PX4_ERR("failed to allocate modified values array");
goto out;
}
if (handle_in_range(param)) {
struct param_wbuf_s *s = param_find_changed(param);
if (s == NULL) {
/* construct a new parameter */
struct param_wbuf_s buf = {
.param = param,
.val.p = NULL,
.unsaved = false
};
params_changed = true;
/* add it to the array and sort */
utarray_push_back(param_values, &buf);
utarray_sort(param_values, param_compare_values);
/* find it after sorting */
s = param_find_changed(param);
}
/* update the changed value */
switch (param_type(param)) {
case PARAM_TYPE_INT32:
params_changed = params_changed || s->val.i != *(int32_t *)val;
s->val.i = *(int32_t *)val;
break;
case PARAM_TYPE_FLOAT:
params_changed = params_changed || fabsf(s->val.f - * (float *)val) > FLT_EPSILON;
s->val.f = *(float *)val;
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (s->val.p == NULL) {
size_t psize = param_size(param);
if (psize > 0) {
s->val.p = malloc(psize);
} else {
s->val.p = NULL;
}
if (s->val.p == NULL) {
PX4_ERR("failed to allocate parameter storage");
goto out;
}
}
memcpy(s->val.p, val, param_size(param));
params_changed = true;
break;
default:
goto out;
}
s->unsaved = !mark_saved;
result = 0;
if (!mark_saved) { // this is false when importing parameters
param_autosave();
}
}
out:
perf_end(param_set_perf);
param_unlock_writer();
/*
* If we set something, now that we have unlocked, go ahead and advertise that
* a thing has been set.
*/
if (params_changed && notify_changes) {
_param_notify_changes();
}
return result;
}
#if defined(FLASH_BASED_PARAMS)
int param_set_external(param_t param, const void *val, bool mark_saved, bool notify_changes)
{
return param_set_internal(param, val, mark_saved, notify_changes);
}
const void *param_get_value_ptr_external(param_t param)
{
return param_get_value_ptr(param);
}
#endif
int
param_set(param_t param, const void *val)
{
return param_set_internal(param, val, false, true);
}
int
param_set_no_notification(param_t param, const void *val)
{
return param_set_internal(param, val, false, false);
}
bool
param_used(param_t param)
{
int param_index = param_get_index(param);
if (param_index < 0) {
return false;
}
return param_changed_storage[param_index / bits_per_allocation_unit] &
(1 << param_index % bits_per_allocation_unit);
}
int
param_export(int fd, bool only_unsaved)
{
perf_begin(param_export_perf);
struct param_wbuf_s *s = NULL;
int result = -1;
struct bson_encoder_s encoder;
int shutdown_lock_ret = px4_shutdown_lock();
if (shutdown_lock_ret) {
PX4_ERR("px4_shutdown_lock() failed (%i)", shutdown_lock_ret);
}
// take the file lock
do {} while (px4_sem_wait(¶m_sem_save) != 0);
param_lock_reader();
uint8_t bson_buffer[256];
bson_encoder_init_buf_file(&encoder, fd, &bson_buffer, sizeof(bson_buffer));
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
const char *name = param_name(s->param);
const size_t size = param_size(s->param);
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32: {
const int32_t i = s->val.i;
debug("exporting: %s (%d) size: %d val: %d", name, s->param, size, i);
if (bson_encoder_append_int(&encoder, name, i)) {
PX4_ERR("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_FLOAT: {
const float f = s->val.f;
debug("exporting: %s (%d) size: %d val: %.3f", name, s->param, size, (double)f);
if (bson_encoder_append_double(&encoder, name, f)) {
PX4_ERR("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX: {
const void *value_ptr = param_get_value_ptr(s->param);
/* lock as short as possible */
if (bson_encoder_append_binary(&encoder,
name,
BSON_BIN_BINARY,
size,
value_ptr)) {
PX4_ERR("BSON append failed for '%s'", name);
goto out;
}
}
break;
default:
PX4_ERR("unrecognized parameter type");
goto out;
}
}
result = 0;
out:
if (result == 0) {
if (bson_encoder_fini(&encoder) != PX4_OK) {
PX4_ERR("bson encoder finish failed");
}
}
param_unlock_reader();
px4_sem_post(¶m_sem_save);
if (shutdown_lock_ret == 0) {
px4_shutdown_unlock();
}
perf_end(param_export_perf);
return result;
}
static int
param_set_internal(param_t param, const void *val, bool mark_saved, bool notify_changes, bool is_saved)
{
int result = -1;
bool params_changed = false;
PX4_DEBUG("param_set_internal params: param = %d, val = 0x%X, mark_saved: %d, notify_changes: %d",
param, val, (int)mark_saved, (int)notify_changes);
param_lock();
if (!handle_in_range(param)) {
return result;
}
mark_saved = true; //mark all params as saved
if (param_values == NULL) {
utarray_new(param_values, ¶m_icd);
}
if (param_values == NULL) {
debug("failed to allocate modified values array");
goto out;
}
if (handle_in_range(param)) {
struct param_wbuf_s *s = param_find_changed(param);
if (s == NULL) {
/* construct a new parameter */
struct param_wbuf_s buf = {
.param = param,
.val.p = NULL,
.unsaved = false
};
/* add it to the array and sort */
utarray_push_back(param_values, &buf);
utarray_sort(param_values, param_compare_values);
/* find it after sorting */
s = param_find_changed(param);
}
/* update the changed value */
switch (param_type(param)) {
case PARAM_TYPE_INT32:
s->val.i = *(int32_t *)val;
break;
case PARAM_TYPE_FLOAT:
s->val.f = *(float *)val;
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (s->val.p == NULL) {
s->val.p = malloc(param_size(param));
if (s->val.p == NULL) {
debug("failed to allocate parameter storage");
goto out;
}
}
memcpy(s->val.p, val, param_size(param));
break;
default:
goto out;
}
s->unsaved = !mark_saved;
params_changed = true;
result = 0;
}
out:
param_unlock();
/*
* If we set something, now that we have unlocked, go ahead and advertise that
* a thing has been set.
*/
if (!param_import_done) { notify_changes = 0; }
if (params_changed && notify_changes) {
param_notify_changes(is_saved);
}
if (result == 0 && !set_called_from_get) {
update_to_shmem(param, *(union param_value_u *)val);
}
#ifdef ENABLE_SHMEM_DEBUG
if (param_type(param) == PARAM_TYPE_INT32) {
PX4_INFO("param_set for %s : %d\n", param_name(param), ((union param_value_u *)val)->i);
}
else if (param_type(param) == PARAM_TYPE_FLOAT) {
PX4_INFO("param_set for %s : %f\n", param_name(param), (double)((union param_value_u *)val)->f);
}
else {
PX4_INFO("Unknown param type for %s\n", param_name(param));
}
#endif
return result;
}
int
param_set(param_t param, const void *val)
{
return param_set_internal(param, val, false, true, false);
}
int
param_set_no_autosave(param_t param, const void *val)
{
return param_set_internal(param, val, false, true, true);
}
int
param_set_no_notification(param_t param, const void *val)
{
return param_set_internal(param, val, false, false, false);
}
bool
param_used(param_t param)
{
// TODO FIXME: for now all params are used
return true;
int param_index = param_get_index(param);
if (param_index < 0) {
return false;
}
return param_changed_storage[param_index / bits_per_allocation_unit] &
(1 << param_index % bits_per_allocation_unit);
}
void param_set_used_internal(param_t param)
{
int param_index = param_get_index(param);
if (param_index < 0) {
return;
}
param_changed_storage[param_index / bits_per_allocation_unit] |=
(1 << param_index % bits_per_allocation_unit);
}
static void
do_show_print(void *arg, param_t param)
{
int32_t i;
float f;
const char *search_string = (const char*)arg;
const char *p_name = (const char*)param_name(param);
/* print nothing if search string is invalid and not matching */
if (!(arg == NULL)) {
/* start search */
char *ss = search_string;
char *pp = p_name;
bool mismatch = false;
/* XXX this comparison is only ok for trailing wildcards */
while (*ss != '\0' && *pp != '\0') {
if (*ss == *pp) {
ss++;
pp++;
} else if (*ss == '*') {
if (*(ss + 1) != '\0') {
warnx("* symbol only allowed at end of search string.");
exit(1);
}
pp++;
} else {
/* param not found */
return;
}
}
/* the search string must have been consumed */
if (!(*ss == '\0' || *ss == '*'))
return;
}
printf("%c %s: ",
param_value_unsaved(param) ? '*' : (param_value_is_default(param) ? ' ' : '+'),
param_name(param));
/*
* This case can be expanded to handle printing common structure types.
*/
switch (param_type(param)) {
case PARAM_TYPE_INT32:
if (!param_get(param, &i)) {
printf("%d\n", i);
return;
}
break;
case PARAM_TYPE_FLOAT:
if (!param_get(param, &f)) {
printf("%4.4f\n", (double)f);
return;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
printf("<struct type %d size %u>\n", 0 + param_type(param), param_size(param));
return;
default:
printf("<unknown type %d>\n", 0 + param_type(param));
return;
}
printf("<error fetching parameter %d>\n", param);
}
static void
do_show_print(void *arg, param_t param)
{
int32_t i;
float f;
const char *search_string = (const char *)arg;
const char *p_name = (const char *)param_name(param);
/* print nothing if search string is invalid and not matching */
if (!(arg == NULL)) {
/* start search */
const char *ss = search_string;
const char *pp = p_name;
/* XXX this comparison is only ok for trailing wildcards */
while (*ss != '\0' && *pp != '\0') {
// case insensitive comparison (param_name is always upper case)
if (toupper(*ss) == *pp) {
ss++;
pp++;
} else if (*ss == '*') {
if (*(ss + 1) != '\0') {
PX4_WARN("* symbol only allowed at end of search string");
// FIXME - should exit
return;
}
pp++;
} else {
/* param not found */
return;
}
}
/* the search string must have been consumed */
if (!(*ss == '\0' || *ss == '*') || *pp != '\0') {
return;
}
}
PARAM_PRINT("%c %c %s [%d,%d] : ", (param_used(param) ? 'x' : ' '),
param_value_unsaved(param) ? '*' : (param_value_is_default(param) ? ' ' : '+'),
param_name(param), param_get_used_index(param), param_get_index(param));
/*
* This case can be expanded to handle printing common structure types.
*/
switch (param_type(param)) {
case PARAM_TYPE_INT32:
if (!param_get(param, &i)) {
PARAM_PRINT("%ld\n", (long)i);
return;
}
break;
case PARAM_TYPE_FLOAT:
if (!param_get(param, &f)) {
PARAM_PRINT("%4.4f\n", (double)f);
return;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
PARAM_PRINT("<struct type %d size %zu>\n", 0 + param_type(param), param_size(param));
return;
default:
PARAM_PRINT("<unknown type %d>\n", 0 + param_type(param));
return;
}
PARAM_PRINT("<error fetching parameter %lu>\n", (unsigned long)param);
}
int
param_export(int fd, bool only_unsaved)
{
struct param_wbuf_s *s = NULL;
struct bson_encoder_s encoder;
int result = -1;
param_lock();
param_bus_lock(true);
bson_encoder_init_file(&encoder, fd);
param_bus_lock(false);
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
int32_t i;
float f;
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32: {
param_get(s->param, &i);
const char *name = param_name(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_int(&encoder, name, i)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_FLOAT: {
param_get(s->param, &f);
const char *name = param_name(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_double(&encoder, name, f)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX: {
const char *name = param_name(s->param);
const size_t size = param_size(s->param);
const void *value_ptr = param_get_value_ptr(s->param);
/* lock as short as possible */
param_bus_lock(true);
if (bson_encoder_append_binary(&encoder,
name,
BSON_BIN_BINARY,
size,
value_ptr)) {
param_bus_lock(false);
debug("BSON append failed for '%s'", name);
goto out;
}
}
break;
default:
debug("unrecognized parameter type");
goto out;
}
param_bus_lock(false);
/* allow this process to be interrupted by another process / thread */
usleep(5);
}
result = 0;
out:
param_unlock();
if (result == 0) {
result = bson_encoder_fini(&encoder);
}
return result;
}
static int
param_set_internal(param_t param, const void *val, bool mark_saved)
{
int result = -1;
bool params_changed = false;
param_lock();
if (param_values == NULL)
utarray_new(param_values, ¶m_icd);
if (param_values == NULL) {
debug("failed to allocate modified values array");
goto out;
}
if (handle_in_range(param)) {
struct param_wbuf_s *s = param_find_changed(param);
if (s == NULL) {
/* construct a new parameter */
struct param_wbuf_s buf = {
.param = param,
.val.p = NULL,
.unsaved = false
};
/* add it to the array and sort */
utarray_push_back(param_values, &buf);
utarray_sort(param_values, param_compare_values);
/* find it after sorting */
s = param_find_changed(param);
}
/* update the changed value */
switch (param_type(param)) {
case PARAM_TYPE_INT32:
s->val.i = *(int32_t *)val;
break;
case PARAM_TYPE_FLOAT:
s->val.f = *(float *)val;
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (s->val.p == NULL) {
s->val.p = malloc(param_size(param));
if (s->val.p == NULL) {
debug("failed to allocate parameter storage");
goto out;
}
}
memcpy(s->val.p, val, param_size(param));
break;
default:
goto out;
}
s->unsaved = !mark_saved;
params_changed = true;
result = 0;
}
out:
param_unlock();
/*
* If we set something, now that we have unlocked, go ahead and advertise that
* a thing has been set.
*/
if (params_changed)
param_notify_changes();
return result;
}
int
param_set(param_t param, const void *val)
{
return param_set_internal(param, val, false);
}
void
param_reset(param_t param)
{
struct param_wbuf_s *s = NULL;
param_lock();
if (handle_in_range(param)) {
/* look for a saved value */
s = param_find_changed(param);
/* if we found one, erase it */
if (s != NULL) {
int pos = utarray_eltidx(param_values, s);
utarray_erase(param_values, pos, 1);
}
}
param_unlock();
if (s != NULL)
param_notify_changes();
}
void
param_reset_all(void)
{
param_lock();
if (param_values != NULL) {
utarray_free(param_values);
}
/* mark as reset / deleted */
param_values = NULL;
param_unlock();
param_notify_changes();
}
static int
param_export_internal(bool only_unsaved)
{
struct param_wbuf_s *s = NULL;
struct bson_encoder_s encoder;
int result = -1;
param_lock();
/* Use realloc */
bson_encoder_init_buf(&encoder, NULL, 0);
/* no modified parameters -> we are done */
if (param_values == NULL) {
result = 0;
goto out;
}
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
int32_t i;
float f;
/*
* If we are only saving values changed since last save, and this
* one hasn't, then skip it
*/
if (only_unsaved && !s->unsaved) {
continue;
}
s->unsaved = false;
/* append the appropriate BSON type object */
switch (param_type(s->param)) {
case PARAM_TYPE_INT32:
param_get(s->param, &i);
if (bson_encoder_append_int(&encoder, param_name(s->param), i)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_FLOAT:
param_get(s->param, &f);
if (bson_encoder_append_double(&encoder, param_name(s->param), f)) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
case PARAM_TYPE_STRUCT ... PARAM_TYPE_STRUCT_MAX:
if (bson_encoder_append_binary(&encoder,
param_name(s->param),
BSON_BIN_BINARY,
param_size(s->param),
param_get_value_ptr_external(s->param))) {
debug("BSON append failed for '%s'", param_name(s->param));
goto out;
}
break;
default:
debug("unrecognized parameter type");
goto out;
}
}
result = 0;
out:
param_unlock();
if (result == 0) {
/* Finalize the bison encoding*/
bson_encoder_fini(&encoder);
/* Get requiered space */
size_t buf_size = bson_encoder_buf_size(&encoder);
/* Get a buffer from the flash driver with enough space */
uint8_t *buffer;
result = parameter_flashfs_alloc(parameters_token, &buffer, &buf_size);
if (result == OK) {
/* Check for a write that has no changes */
uint8_t *was_buffer;
size_t was_buf_size;
int was_result = parameter_flashfs_read(parameters_token, &was_buffer, &was_buf_size);
void *enc_buff = bson_encoder_buf_data(&encoder);
bool commit = was_result < OK || was_buf_size != buf_size || 0 != memcmp(was_buffer, enc_buff, was_buf_size);
if (commit) {
memcpy(buffer, enc_buff, buf_size);
result = parameter_flashfs_write(parameters_token, buffer, buf_size);
result = result == buf_size ? OK : -EFBIG;
}
free(enc_buff);
}
}
return result;
}
