From 298ed2a6c44cde90b4262b884169c53b8deda508 Mon Sep 17 00:00:00 2001
From: Michele Bertasi <405934+mbrt@users.noreply.github.com>
Date: Thu, 26 Mar 2026 22:19:14 +0100
Subject: Add support for cgroup limits (#443)

* Add cgroup package

* Refactor procGgroup

* Add testdata generation

* Add v1 testdata generation

* Move scripts around

* Add integration test in CI

* Remove cgroup v1

* Move to cgroup struct

* Remove half-core test as it's redundant
---
 cgroup/testdata/v2-no-limit/expected.json                    | 1 +
 cgroup/testdata/v2-no-limit/proc/self/cgroup                 | 1 +
 cgroup/testdata/v2-no-limit/sys/fs/cgroup/cpu.max            | 1 +
 cgroup/testdata/v2-no-limit/sys/fs/cgroup/memory.max         | 1 +
 cgroup/testdata/v2-quarter-core-64m/expected.json            | 1 +
 cgroup/testdata/v2-quarter-core-64m/proc/self/cgroup         | 1 +
 cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/cpu.max    | 1 +
 cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/memory.max | 1 +
 cgroup/testdata/v2-two-cores-256m/expected.json              | 1 +
 cgroup/testdata/v2-two-cores-256m/proc/self/cgroup           | 1 +
 cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/cpu.max      | 1 +
 cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/memory.max   | 1 +
 12 files changed, 12 insertions(+)
 create mode 100644 cgroup/testdata/v2-no-limit/expected.json
 create mode 100644 cgroup/testdata/v2-no-limit/proc/self/cgroup
 create mode 100644 cgroup/testdata/v2-no-limit/sys/fs/cgroup/cpu.max
 create mode 100644 cgroup/testdata/v2-no-limit/sys/fs/cgroup/memory.max
 create mode 100644 cgroup/testdata/v2-quarter-core-64m/expected.json
 create mode 100644 cgroup/testdata/v2-quarter-core-64m/proc/self/cgroup
 create mode 100644 cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/cpu.max
 create mode 100644 cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/memory.max
 create mode 100644 cgroup/testdata/v2-two-cores-256m/expected.json
 create mode 100644 cgroup/testdata/v2-two-cores-256m/proc/self/cgroup
 create mode 100644 cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/cpu.max
 create mode 100644 cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/memory.max

(limited to 'cgroup/testdata')

diff --git a/cgroup/testdata/v2-no-limit/expected.json b/cgroup/testdata/v2-no-limit/expected.json
new file mode 100644
index 0000000..3a6d7ed
--- /dev/null
+++ b/cgroup/testdata/v2-no-limit/expected.json
@@ -0,0 +1 @@
+{"cpu_quota": null, "memory_limit": null}
diff --git a/cgroup/testdata/v2-no-limit/proc/self/cgroup b/cgroup/testdata/v2-no-limit/proc/self/cgroup
new file mode 100644
index 0000000..1e027b2
--- /dev/null
+++ b/cgroup/testdata/v2-no-limit/proc/self/cgroup
@@ -0,0 +1 @@
+0::/
diff --git a/cgroup/testdata/v2-no-limit/sys/fs/cgroup/cpu.max b/cgroup/testdata/v2-no-limit/sys/fs/cgroup/cpu.max
new file mode 100644
index 0000000..1c1d3e7
--- /dev/null
+++ b/cgroup/testdata/v2-no-limit/sys/fs/cgroup/cpu.max
@@ -0,0 +1 @@
+max 100000
diff --git a/cgroup/testdata/v2-no-limit/sys/fs/cgroup/memory.max b/cgroup/testdata/v2-no-limit/sys/fs/cgroup/memory.max
new file mode 100644
index 0000000..355295a
--- /dev/null
+++ b/cgroup/testdata/v2-no-limit/sys/fs/cgroup/memory.max
@@ -0,0 +1 @@
+max
diff --git a/cgroup/testdata/v2-quarter-core-64m/expected.json b/cgroup/testdata/v2-quarter-core-64m/expected.json
new file mode 100644
index 0000000..41ec96f
--- /dev/null
+++ b/cgroup/testdata/v2-quarter-core-64m/expected.json
@@ -0,0 +1 @@
+{"cpu_quota": 0.25, "memory_limit": 67108864}
diff --git a/cgroup/testdata/v2-quarter-core-64m/proc/self/cgroup b/cgroup/testdata/v2-quarter-core-64m/proc/self/cgroup
new file mode 100644
index 0000000..1e027b2
--- /dev/null
+++ b/cgroup/testdata/v2-quarter-core-64m/proc/self/cgroup
@@ -0,0 +1 @@
+0::/
diff --git a/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/cpu.max b/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/cpu.max
new file mode 100644
index 0000000..6fe3458
--- /dev/null
+++ b/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/cpu.max
@@ -0,0 +1 @@
+25000 100000
diff --git a/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/memory.max b/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/memory.max
new file mode 100644
index 0000000..e6c6862
--- /dev/null
+++ b/cgroup/testdata/v2-quarter-core-64m/sys/fs/cgroup/memory.max
@@ -0,0 +1 @@
+67108864
diff --git a/cgroup/testdata/v2-two-cores-256m/expected.json b/cgroup/testdata/v2-two-cores-256m/expected.json
new file mode 100644
index 0000000..04ce067
--- /dev/null
+++ b/cgroup/testdata/v2-two-cores-256m/expected.json
@@ -0,0 +1 @@
+{"cpu_quota": 2.0, "memory_limit": 268435456}
diff --git a/cgroup/testdata/v2-two-cores-256m/proc/self/cgroup b/cgroup/testdata/v2-two-cores-256m/proc/self/cgroup
new file mode 100644
index 0000000..1e027b2
--- /dev/null
+++ b/cgroup/testdata/v2-two-cores-256m/proc/self/cgroup
@@ -0,0 +1 @@
+0::/
diff --git a/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/cpu.max b/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/cpu.max
new file mode 100644
index 0000000..9685656
--- /dev/null
+++ b/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/cpu.max
@@ -0,0 +1 @@
+200000 100000
diff --git a/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/memory.max b/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/memory.max
new file mode 100644
index 0000000..853f47e
--- /dev/null
+++ b/cgroup/testdata/v2-two-cores-256m/sys/fs/cgroup/memory.max
@@ -0,0 +1 @@
+268435456
-- 
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