mirror of
https://github.com/oven-sh/bun
synced 2026-02-15 13:22:07 +00:00
9297c13b4c
- Use clone3 for ANY container features (namespaces or cgroups), vfork only when no container - Fix cgroup setup error propagation - properly return errno instead of 0 - Fix cgroup path consistency between C++ and Zig code - Make cgroup failures fatal as requested - Fix synchronization between parent and child for proper cgroup setup - Add proper __aligned_u64 definition for clone_args structure The implementation now correctly: - Creates cgroups under /sys/fs/cgroup/bun-* - Adds process to cgroup before it starts executing - Applies CPU and memory resource limits via cgroup v2 - Cleans up cgroups when process exits Tests pass with root privileges, fail with EACCES without root as expected. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
63 lines
1.6 KiB
TypeScript
63 lines
1.6 KiB
TypeScript
import { test, expect, describe } from "bun:test";
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import { bunEnv } from "harness";
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describe("container cgroups v2 only (no namespaces)", () => {
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// Skip all tests if not Linux
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if (process.platform !== "linux") {
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test.skip("container tests are Linux-only", () => {});
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return;
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}
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test("Resource limits without namespaces", async () => {
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// Test cgroups without any namespace isolation
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await using proc = Bun.spawn({
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cmd: ["/bin/echo", "cgroups only"],
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env: bunEnv,
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container: {
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// No namespace isolation
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limit: {
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cpu: 50, // 50% CPU
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ram: 100 * 1024 * 1024, // 100MB RAM
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},
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},
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stdout: "pipe",
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stderr: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([
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proc.stdout.text(),
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proc.stderr.text(),
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proc.exited,
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]);
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expect(exitCode).toBe(0);
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expect(stdout.trim()).toBe("cgroups only");
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});
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test("Check process cgroup placement", async () => {
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await using proc = Bun.spawn({
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cmd: ["/bin/sh", "-c", "cat /proc/self/cgroup"],
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env: bunEnv,
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container: {
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limit: {
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cpu: 25,
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},
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},
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stdout: "pipe",
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stderr: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([
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proc.stdout.text(),
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proc.stderr.text(),
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proc.exited,
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]);
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console.log("Process cgroup:", stdout);
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expect(exitCode).toBe(0);
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// If cgroups worked, we should see a bun-* cgroup
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// If not, process will be in default cgroup (that's OK too)
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expect(stdout.length).toBeGreaterThan(0);
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});
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}); |