From d6b3cce5516abd660dfe720389fd4669b4358717 Mon Sep 17 00:00:00 2001
From: Boming Zhang <bomingzh@sjtu.edu.cn>
Date: Fri, 31 Jan 2025 19:26:54 -0500
Subject: [PATCH] revert: "feat(executor/local): rlimit on CPU, Memory, Stack"

This reverts commit 198fcc3c86ad72176c963f5c24136b7106dea192.
---
 internal/executor/local/executor.go | 38 +----------------------------
 1 file changed, 1 insertion(+), 37 deletions(-)

diff --git a/internal/executor/local/executor.go b/internal/executor/local/executor.go
index 2051816..78fe467 100644
--- a/internal/executor/local/executor.go
+++ b/internal/executor/local/executor.go
@@ -16,32 +16,6 @@ import (
 
 type Local struct{}
 
-func ToRlimit(c stage.Cmd) (map[int]syscall.Rlimit, error) {
-	limits := make(map[int]syscall.Rlimit)
-
-	if c.CPULimit > 0 {
-		// ns to s
-		timeLimit := (uint64(c.CPULimit) + 1e9 - 1) / 1e9
-		if timeLimit < 1 {
-			timeLimit = 1
-		}
-		limits[syscall.RLIMIT_CPU] = syscall.Rlimit{
-			Cur: timeLimit, Max: timeLimit,
-		}
-	}
-	if c.MemoryLimit > 0 {
-		limits[syscall.RLIMIT_AS] = syscall.Rlimit{
-			Cur: c.MemoryLimit, Max: c.MemoryLimit, // bytes
-		}
-	}
-	if c.StackLimit > 0 {
-		limits[syscall.RLIMIT_STACK] = syscall.Rlimit{
-			Cur: c.StackLimit, Max: c.StackLimit, // bytes
-		}
-	}
-	return limits, nil
-}
-
 func (e *Local) Run(cmds []stage.Cmd) ([]stage.ExecutorResult, error) {
 	var results []stage.ExecutorResult
 
@@ -54,16 +28,6 @@ func (e *Local) Run(cmds []stage.Cmd) ([]stage.ExecutorResult, error) {
 		}
 		execCmd.Env = env
 
-		limits, err := ToRlimit(cmd)
-		if err != nil {
-			return nil, fmt.Errorf("failed to convert rlimits: %v", err)
-		}
-		for resource, limit := range limits {
-			if err := syscall.Setrlimit(resource, &limit); err != nil {
-				return nil, fmt.Errorf("failed to set rlimit: %v", err)
-			}
-		}
-
 		if cmd.Stdin != nil {
 			if cmd.Stdin.Content != nil {
 				execCmd.Stdin = strings.NewReader(*cmd.Stdin.Content)
@@ -81,7 +45,7 @@ func (e *Local) Run(cmds []stage.Cmd) ([]stage.ExecutorResult, error) {
 		execCmd.Stderr = &stderrBuffer
 
 		startTime := time.Now()
-		err = execCmd.Start()
+		err := execCmd.Start()
 		if err != nil {
 			return nil, fmt.Errorf("failed to start command: %v", err)
 		}