debuggerd: Use libprocessgroup to unfreeze
Cgroup v2 paths are owned by libprocessgroup. Those paths can change
based on build flags, so paths generated outside of libprocessgroup may
not always be correct.
Bug: 382693152
Test: adb shell debuggerd -b <pid>
Change-Id: I7e486ab6f4068d0fae1be033a91b9a307f54ed42
diff --git a/debuggerd/Android.bp b/debuggerd/Android.bp
index 3257a2c..0e62ceb 100644
--- a/debuggerd/Android.bp
+++ b/debuggerd/Android.bp
@@ -505,6 +505,7 @@
"libbase",
"libdebuggerd_client",
"liblog",
+ "libprocessgroup",
"libprocinfo",
],
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 0d4b91f..7a2500c 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -23,11 +23,11 @@
#include <string_view>
#include <thread>
-#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <android-base/unique_fd.h>
#include <debuggerd/client.h>
+#include <processgroup/processgroup.h>
#include <procinfo/process.h>
#include "util.h"
@@ -92,13 +92,8 @@
}
// unfreeze if pid is frozen.
- const std::string freeze_file = android::base::StringPrintf(
- "/sys/fs/cgroup/uid_%d/pid_%d/cgroup.freeze", proc_info.uid, proc_info.pid);
- if (std::string freeze_status;
- android::base::ReadFileToString(freeze_file, &freeze_status) && freeze_status[0] == '1') {
- android::base::WriteStringToFile("0", freeze_file);
- // we don't restore the frozen state as this is considered a benign change.
- }
+ SetProcessProfiles(proc_info.uid, proc_info.pid, {"Unfrozen"});
+ // we don't restore the frozen state as this is considered a benign change.
unique_fd output_fd(fcntl(STDOUT_FILENO, F_DUPFD_CLOEXEC, 0));
if (output_fd.get() == -1) {