diff options
| author | John Stultz <john.stultz@linaro.org> | 2017-09-07 11:47:17 -0700 |
|---|---|---|
| committer | Sumit Semwal <sumit.semwal@linaro.org> | 2021-01-27 23:55:01 +0530 |
| commit | 24b5f189eeb476d32873cb181663038089e88190 (patch) | |
| tree | ee75be4716657dc65a64f65e21f5d9f71bc9ecd7 | |
| parent | eadaf27f237dc02eedd3016a48e7e0a2a756d47b (diff) | |
HACK: ANDROID: Allow CAP_SYS_NICE tasks to migrate processes between cgroups
This hack allows CAP_SYS_NICE tasks to have privledge
to migrate other tasks between cgroups. This is used by
the system_service to migrate processes between top-app,
foreground, background cgroups for cputime and schedtune
groups.
Signed-off-by: John Stultz <john.stultz@linaro.org>
| -rw-r--r-- | kernel/cgroup/cgroup-v1.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index 32596fdbcd5b..a887e8f2f399 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -510,7 +510,8 @@ static ssize_t __cgroup1_procs_write(struct kernfs_open_file *of, tcred = get_task_cred(task); if (!uid_eq(cred->euid, GLOBAL_ROOT_UID) && !uid_eq(cred->euid, tcred->uid) && - !uid_eq(cred->euid, tcred->suid)) + !uid_eq(cred->euid, tcred->suid) && + !ns_capable(tcred->user_ns, CAP_SYS_NICE)) ret = -EACCES; put_cred(tcred); if (ret) |