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libprocessgroup: adopt cgroup v2 freezer search path 

With the new uid/pid hierarchy the search path looks into uid_0, which
is always present.

Bug: 168907513
Test: verified that the cgroup v2 hierarchy works correctly in normal
mode
Test: verified that the cgroup v2 hierarchy works correctly in recovery
mode

Change-Id: If33594e4891128148da64bed47e68fa74667013d
This commit is contained in:
Marco Ballesio 2021-02-11 14:42:25 -08:00
parent 4dac81680f
commit a7148f82a1
1 changed files with 2 additions and 1 deletions
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3
libprocessgroup/include/processgroup/processgroup.h
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@ -36,7 +36,8 @@ bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& pr
static constexpr const char* CGROUPS_RC_PATH = "/dev/cgroup_info/cgroup.rc";
// Path to test against for freezer support
static constexpr const char* CGROUP_FREEZE_PATH = "/sys/fs/cgroup/freezer/cgroup.freeze";
// TODO: remove and replace with a function call, see http://b/180056337
static constexpr const char* CGROUP_FREEZE_PATH = "/sys/fs/cgroup/uid_0/cgroup.freeze";
bool UsePerAppMemcg();