/*
* Checks permissions for setting system properties.
* Returns 1 if uid allowed, 0 otherwise.
*/
static int check_perms(const char *name, unsigned int uid, unsigned int gid, char *sctx)
{
int i;
unsigned int app_id;
if(!strncmp(name, "ro.", 3))
name +=3;
if (uid == 0)
return check_mac_perms(name, sctx);
app_id = multiuser_get_app_id(uid);
if (app_id == AID_BLUETOOTH) {
uid = app_id;
}
for (i = 0; property_perms[i].prefix; i++) {
if (strncmp(property_perms[i].prefix, name,
strlen(property_perms[i].prefix)) == 0) {
if ((uid && property_perms[i].uid == uid) ||
(gid && property_perms[i].gid == gid)) {
return check_mac_perms(name, sctx);
}
}
}
return 0;
}
static jint com_android_internal_os_Zygote_nativeForkAndSpecialize(
JNIEnv* env, jclass, jint uid, jint gid, jintArray gids,
jint debug_flags, jobjectArray rlimits,
jint mount_external, jstring se_info, jstring se_name,
jintArray fdsToClose, jstring instructionSet, jstring appDataDir) {
jlong capabilities = 0;
// Grant CAP_WAKE_ALARM to the Bluetooth process.
if (multiuser_get_app_id(uid) == AID_BLUETOOTH) {
capabilities |= (1LL << CAP_WAKE_ALARM);
}
// Grant CAP_BLOCK_SUSPEND to processes that belong to GID "wakelock"
bool gid_wakelock_found = false;
if (gid == AID_WAKELOCK) {
gid_wakelock_found = true;
} else if (gids != NULL) {
jsize gids_num = env->GetArrayLength(gids);
ScopedIntArrayRO ar(env, gids);
if (ar.get() == NULL) {
RuntimeAbort(env, __LINE__, "Bad gids array");
}
for (int i = 0; i < gids_num; i++) {
if (ar[i] == AID_WAKELOCK) {
gid_wakelock_found = true;
break;
}
}
}
if (gid_wakelock_found) {
capabilities |= (1LL << CAP_BLOCK_SUSPEND);
}
return ForkAndSpecializeCommon(env, uid, gid, gids, debug_flags,
rlimits, capabilities, capabilities, mount_external, se_info,
se_name, false, fdsToClose, instructionSet, appDataDir);
}
/*
* Checks permissions for setting system properties.
* Returns 1 if uid allowed, 0 otherwise.
*/
static int check_perms(const char *name, unsigned int uid, unsigned int gid, char *sctx)
{
int i;
unsigned int app_id;
#ifdef MTK_USER_ROOT_SWITCH
if(!strcmp(name,"ro.secure") || !strcmp(name,"persist.service.atci.usermode") || !strcmp(name, "persist.user2root.root")
|| !strcmp(name,"ro.debuggable") || !strcmp(name,"persist.sys.usb.config") || !strcmp(name,"persist.service.adb.enable")){
return 1;
}
#endif
if(!strncmp(name, "ro.", 3))
name +=3;
if (uid == 0)
return check_mac_perms(name, sctx);
app_id = multiuser_get_app_id(uid);
if (app_id == AID_BLUETOOTH) {
uid = app_id;
}
for (i = 0; property_perms[i].prefix; i++) {
if (strncmp(property_perms[i].prefix, name,
strlen(property_perms[i].prefix)) == 0) {
if ((uid && property_perms[i].uid == uid) ||
(gid && property_perms[i].gid == gid)) {
return check_mac_perms(name, sctx);
}
}
}
return 0;
}
gid_t multiuser_get_shared_app_gid(uid_t uid) {
return multiuser_get_shared_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid));
}
