ACPR/android_system_core
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge "Log pid for writes to sys.powerctl" am: 2827106d7d

Browse source 
am: c1968fb0c9

Change-Id: I3912b76dfca15e9d49d6c657c5081745b163af1b
This commit is contained in:
Tom Cherry 2017-09-06 17:12:52 +00:00 • committed by android-build-merger
commit 17b2996743
1 changed files with 16 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
init/property_service.cpp
View file

@ -45,6 +45,7 @@
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <bootimg.h>
#include <fs_mgr.h>
@ -56,6 +57,7 @@
#include "persistent_properties.h"
#include "util.h"
using android::base::StringPrintf;
using android::base::Timer;
#define RECOVERY_MOUNT_POINT "/recovery"
@ -418,6 +420,20 @@ static void handle_property_set(SocketConnection& socket,
}
} else {
if (check_mac_perms(name, source_ctx, &cr)) {
// sys.powerctl is a special property that is used to make the device reboot. We want to log
// any process that sets this property to be able to accurately blame the cause of a shutdown.
if (name == "sys.powerctl") {
std::string cmdline_path = StringPrintf("proc/%d/cmdline", cr.pid);
std::string process_cmdline;
std::string process_log_string;
if (android::base::ReadFileToString(cmdline_path, &process_cmdline)) {
// Since cmdline is null deliminated, .c_str() conveniently gives us just the process path.
process_log_string = StringPrintf(" (%s)", process_cmdline.c_str());
}
LOG(INFO) << "Received sys.powerctl='" << value << "' from pid: " << cr.pid
<< process_log_string;
}
uint32_t result = property_set(name, value);
if (!legacy_protocol) {
socket.SendUint32(result);