TEST(properties, wait) {
#if defined(__BIONIC__)
LocalPropertyTestState pa;
ASSERT_TRUE(pa.valid);
unsigned int serial;
prop_info *pi;
pthread_t t;
int flag = 0;
ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
serial = __system_property_wait_any(0);
pi = (prop_info *)__system_property_find("property");
ASSERT_NE((prop_info *)NULL, pi);
__system_property_update(pi, "value2", 6);
serial = __system_property_wait_any(serial);
ASSERT_EQ(0, pthread_create(&t, NULL, PropertyWaitHelperFn, &flag));
ASSERT_EQ(flag, 0);
serial = __system_property_wait_any(serial);
ASSERT_EQ(flag, 1);
void* result;
ASSERT_EQ(0, pthread_join(t, &result));
#else // __BIONIC__
GTEST_LOG_(INFO) << "This test does nothing.\n";
#endif // __BIONIC__
}
int property_set(const char *name, const char *value)
{
prop_info *pi;
int ret;
size_t namelen = strlen(name);
size_t valuelen = strlen(value);
if (!is_legal_property_name(name, namelen)) return -1;
if (valuelen >= PROP_VALUE_MAX) return -1;
pi = (prop_info*) __system_property_find(name);
if(pi != 0) {
/* ro.* properties may NEVER be modified once set */
// ro，只读的property只能被设定一次
if(!strncmp(name, "ro.", 3)) return -1;
__system_property_update(pi, value, valuelen);
} else {
// 将key和value写入到shared memory中
ret = __system_property_add(name, namelen, value, valuelen);
if (ret < 0) {
ERROR("Failed to set '%s'='%s'\n", name, value);
return ret;
}
}
/* If name starts with "net." treat as a DNS property. */
if (strncmp("net.", name, strlen("net.")) == 0) {
if (strcmp("net.change", name) == 0) {
return 0;
}
/*
* The 'net.change' property is a special property used track when any
* 'net.*' property name is updated. It is _ONLY_ updated here. Its value
* contains the last updated 'net.*' property.
*/
property_set("net.change", name);
} else if (persistent_properties_loaded &&
strncmp("persist.", name, strlen("persist.")) == 0) {
char bootmode[PROP_VALUE_MAX];
ret = property_get("ro.bootmode", bootmode);
if (ret <= 0 || (strcmp(bootmode, "charger") != 0)) //do not write prop while charger mode
/*
* Don't write properties to disk until after we have read all default properties
* to prevent them from being overwritten by default values.
*/
write_persistent_property(name, value);
} else if (strcmp("selinux.reload_policy", name) == 0 &&
strcmp("1", value) == 0) {
selinux_reload_policy();
}
property_changed(name, value);
#ifdef AW_BOOSTUP_ENABLE
aw_boost_up_perf(name, value);
#endif
return 0;
}
static void *PropertyWaitHelperFn(void *arg) {
int *flag = (int *)arg;
prop_info *pi;
pi = (prop_info *)__system_property_find("property");
usleep(100000);
*flag = 1;
__system_property_update(pi, "value3", 6);
return NULL;
}
static int property_set_impl(const char* name, const char* value) {
size_t namelen = strlen(name);
size_t valuelen = strlen(value);
if (!is_legal_property_name(name, namelen)) return -1;
if (valuelen >= PROP_VALUE_MAX) return -1;
if (strcmp("selinux.reload_policy", name) == 0 && strcmp("1", value) == 0) {
if (selinux_reload_policy() != 0) {
ERROR("Failed to reload policy\n");
}
} else if (strcmp("selinux.restorecon_recursive", name) == 0 && valuelen > 0) {
if (restorecon_recursive(value) != 0) {
ERROR("Failed to restorecon_recursive %s\n", value);
}
}
prop_info* pi = (prop_info*) __system_property_find(name);
if(pi != 0) {
/* ro.* properties may NEVER be modified once set */
if(!strncmp(name, "ro.", 3)) return -1;
__system_property_update(pi, value, valuelen);
} else {
int rc = __system_property_add(name, namelen, value, valuelen);
if (rc < 0) {
return rc;
}
}
/* If name starts with "net." treat as a DNS property. */
if (strncmp("net.", name, strlen("net.")) == 0) {
if (strcmp("net.change", name) == 0) {
return 0;
}
/*
* The 'net.change' property is a special property used track when any
* 'net.*' property name is updated. It is _ONLY_ updated here. Its value
* contains the last updated 'net.*' property.
*/
property_set("net.change", name);
} else if (persistent_properties_loaded &&
strncmp("persist.", name, strlen("persist.")) == 0) {
/*
* Don't write properties to disk until after we have read all default properties
* to prevent them from being overwritten by default values.
*/
write_persistent_property(name, value);
}
property_changed(name, value);
return 0;
}
TEST(properties, update) {
#if defined(__BIONIC__)
LocalPropertyTestState pa;
ASSERT_TRUE(pa.valid);
char propvalue[PROP_VALUE_MAX];
prop_info *pi;
ASSERT_EQ(0, __system_property_add("property", 8, "oldvalue1", 9));
ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
pi = (prop_info *)__system_property_find("property");
ASSERT_NE((prop_info *)NULL, pi);
__system_property_update(pi, "value4", 6);
pi = (prop_info *)__system_property_find("other_property");
ASSERT_NE((prop_info *)NULL, pi);
__system_property_update(pi, "newvalue5", 9);
pi = (prop_info *)__system_property_find("property_other");
ASSERT_NE((prop_info *)NULL, pi);
__system_property_update(pi, "value6", 6);
ASSERT_EQ(6, __system_property_get("property", propvalue));
ASSERT_STREQ(propvalue, "value4");
ASSERT_EQ(9, __system_property_get("other_property", propvalue));
ASSERT_STREQ(propvalue, "newvalue5");
ASSERT_EQ(6, __system_property_get("property_other", propvalue));
ASSERT_STREQ(propvalue, "value6");
#else // __BIONIC__
GTEST_LOG_(INFO) << "This test does nothing.\n";
#endif // __BIONIC__
}
TEST(properties, serial) {
#if defined(__BIONIC__)
LocalPropertyTestState pa;
ASSERT_TRUE(pa.valid);
const prop_info *pi;
unsigned int serial;
ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
ASSERT_NE((const prop_info *)NULL, pi = __system_property_find("property"));
serial = __system_property_serial(pi);
ASSERT_EQ(0, __system_property_update((prop_info *)pi, "value2", 6));
ASSERT_NE(serial, __system_property_serial(pi));
#else // __BIONIC__
GTEST_LOG_(INFO) << "This test does nothing.\n";
#endif // __BIONIC__
}
TEST(properties, errors) {
#if defined(__BIONIC__)
LocalPropertyTestState pa;
ASSERT_TRUE(pa.valid);
char prop_value[PROP_NAME_MAX];
ASSERT_EQ(0, __system_property_add("property", 8, "value1", 6));
ASSERT_EQ(0, __system_property_add("other_property", 14, "value2", 6));
ASSERT_EQ(0, __system_property_add("property_other", 14, "value3", 6));
ASSERT_EQ(0, __system_property_find("property1"));
ASSERT_EQ(0, __system_property_get("property1", prop_value));
ASSERT_EQ(-1, __system_property_add("name", PROP_NAME_MAX, "value", 5));
ASSERT_EQ(-1, __system_property_add("name", 4, "value", PROP_VALUE_MAX));
ASSERT_EQ(-1, __system_property_update(NULL, "value", PROP_VALUE_MAX));
#else // __BIONIC__
GTEST_LOG_(INFO) << "This test does nothing.\n";
#endif // __BIONIC__
}
int property_set_overwirte(const char *name, const char *value, int allow_overwirte_ro) ////Lenovo [EasyImage]
{
prop_info *pi;
int ret;
size_t namelen = strlen(name);
size_t valuelen = strlen(value);
if (!is_legal_property_name(name, namelen)) {
ERROR("PropSet Error:[%s:%s] property name is illegal\n", name, value);
return -1;
}
if (valuelen >= PROP_VALUE_MAX) {
ERROR("PropSet Error:[%s:%s] valuelen %d >= %d\n", name, value, valuelen, PROP_VALUE_MAX);
return -1;
}
#ifdef MTK_INIT
INFO("PropSet [%s:%s] Start>>\n", name, value);
#endif
pi = (prop_info*) __system_property_find(name);
if(pi != 0) {
/* ro.* properties may NEVER be modified once set */
if(allow_overwirte_ro!= 1 && !strncmp(name, "ro.", 3)){
#ifdef MTK_INIT
ERROR("PropSet Error:[%s:%s] ro.* properties may NEVER be modified once set\n", name, value);
#endif
return -1;
}
__system_property_update(pi, value, valuelen);
} else {
#ifdef INIT_ENG_BUILD
prop_area *pa = __system_property_area__;
if ((pa->bytes_used > PA_SIZE_ERR) && (0 == alarmed ))
{
alarmed = 1;
ERROR("[Property Error]: Unable to set [%s:%s] property limit has arrived: %d\n", name, value, pa->bytes_used);
#ifdef MTK_INIT
property_show();
#endif
}
else if ((pa->bytes_used > PA_SIZE_WARN) && (0 == warned ))
{
warned = 1;
NOTICE("[Property Warning]: limit would be arrived:%d (Max:%d). "
"Use getprop to review your properties!\n", pa->bytes_used, PA_SIZE);
#ifdef MTK_INIT
property_show();
#endif
}
#endif
ret = __system_property_add(name, namelen, value, valuelen);
if (ret < 0) {
#ifdef INIT_ENG_BUILD
ERROR("Failed to set '%s'='%s' bytes_used=%u\n", name, value, pa->bytes_used);
#else
ERROR("Failed to set '%s'='%s'\n", name, value);
#endif
return ret;
}
}
/* If name starts with "net." treat as a DNS property. */
if (strncmp("net.", name, strlen("net.")) == 0) {
if (strcmp("net.change", name) == 0) {
#ifdef MTK_INIT
INFO("PropSet [%s:%s] Done\n", name, value);
#endif
return 0;
}
/*
* The 'net.change' property is a special property used track when any
* 'net.*' property name is updated. It is _ONLY_ updated here. Its value
* contains the last updated 'net.*' property.
*/
property_set("net.change", name);
} else if (persistent_properties_loaded &&
strncmp("persist.", name, strlen("persist.")) == 0) {
/*
* Don't write properties to disk until after we have read all default properties
* to prevent them from being overwritten by default values.
*/
write_persistent_property(name, value);
} else if (strcmp("selinux.reload_policy", name) == 0 &&
strcmp("1", value) == 0) {
selinux_reload_policy();
}
property_changed(name, value);
#ifdef MTK_INIT
INFO("PropSet [%s:%s] Done\n", name, value);
#endif
return 0;
}
