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logd: check return values

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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
This commit is contained in:
Mark Salyzyn 2016-03-02 07:51:48 -08:00
parent 0ecdec7a09
commit bf7d0b8875
1 changed files with 6 additions and 3 deletions
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9
logd/main.cpp
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@ -165,7 +165,7 @@ bool property_get_bool(const char *key, int flag) {
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
@ -265,8 +265,11 @@ static void *reinit_thread_start(void * /*obj*/) {
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) {