int mb__system_properties_init()
{
if (initialized) {
list_foreach(contexts, [](context_node* l) { l->reset_access(); });
return 0;
}
if (is_dir(property_filename)) {
if (!initialize_properties()) {
return -1;
}
if (!map_system_property_area(false, nullptr)) {
free_and_unmap_contexts();
return -1;
}
} else {
mb__system_property_area__ = map_prop_area(property_filename, true);
if (!mb__system_property_area__) {
return -1;
}
list_add(&contexts, "legacy_system_prop_area", mb__system_property_area__);
list_add_after_len(&prefixes, "*", contexts);
}
initialized = true;
return 0;
}
int libc_system_property_foreach(
void (*propfn)(const prop_info *pi, void *cookie),
void *cookie)
{
initialize_properties();
return mb__system_property_foreach(propfn, cookie);
}
bool libc_system_property_wait(const prop_info *pi,
uint32_t old_serial,
uint32_t *new_serial_ptr,
const struct timespec *relative_timeout)
{
initialize_properties();
return mb__system_property_wait(pi, old_serial, new_serial_ptr,
relative_timeout);
}
void libc_system_property_read_callback(
const prop_info *pi,
void (*callback)(void *cookie, const char *name, const char *value,
uint32_t serial),
void *cookie)
{
initialize_properties();
return mb__system_property_read_callback(pi, callback, cookie);
}
bool property_set_direct(const std::string &key, const std::string &value)
{
initialize_properties();
prop_info *pi = const_cast<prop_info *>(
mb__system_property_find(key.c_str()));
int ret;
if (pi) {
ret = mb__system_property_update(pi, value.c_str(),
static_cast<unsigned int>(value.size()));
} else {
ret = mb__system_property_add(key.c_str(),
static_cast<unsigned int>(key.size()),
value.c_str(),
static_cast<unsigned int>(value.size()));
}
return ret == 0;
}
int mb__system_property_area_init() {
free_and_unmap_contexts();
mkdir(property_filename, S_IRWXU | S_IXGRP | S_IXOTH);
if (!initialize_properties()) {
return -1;
}
bool open_failed = false;
bool fsetxattr_failed = false;
list_foreach(contexts, [&fsetxattr_failed, &open_failed](context_node* l) {
if (!l->open(true, &fsetxattr_failed)) {
open_failed = true;
}
});
if (open_failed || !map_system_property_area(true, &fsetxattr_failed)) {
free_and_unmap_contexts();
return -1;
}
initialized = true;
return fsetxattr_failed ? -2 : 0;
}
const prop_info *libc_system_property_find(const char *name)
{
initialize_properties();
return mb__system_property_find(name);
}
int libc_system_property_set(const char *key, const char *value)
{
initialize_properties();
return mb__system_property_set(key, value);
}
