logd: check return values
(cherry pick from commit bf7d0b887561929d22c8e2efa5d86cb0d7c50b51)
The setgid() and setuid() call failure in logd.daemon thread
do not block overall functionality, so clearly tell static
analyzer and developers that we do not care to check their
return values.
SideEffects: None
Bug: 27434072
Change-Id: I6fdc87e8311ebc0173716080bbd72c86b3f00f78
diff --git a/logd/main.cpp b/logd/main.cpp
index aa5718e..11c9372 100644
--- a/logd/main.cpp
+++ b/logd/main.cpp
@@ -165,7 +165,7 @@
char newkey[PROPERTY_KEY_MAX];
snprintf(newkey, sizeof(newkey), "ro.%s", key);
property_get(newkey, property, "");
- // persist properties set by /data require innoculation with
+ // persist properties set by /data require inoculation with
// logd-reinit. They may be set in init.rc early and function, but
// otherwise are defunct unless reset. Do not rely on persist
// properties for startup-only keys unless you are willing to restart
@@ -243,8 +243,11 @@
set_sched_policy(0, SP_BACKGROUND);
setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND);
- setgid(AID_SYSTEM);
- setuid(AID_SYSTEM);
+ // If we are AID_ROOT, we should drop to AID_SYSTEM, if we are anything
+ // else, we have even lesser privileges and accept our fate. Not worth
+ // checking for error returns setting this thread's privileges.
+ (void)setgid(AID_SYSTEM);
+ (void)setuid(AID_SYSTEM);
while (reinit_running && !sem_wait(&reinit) && reinit_running) {