From 568a309225fa203662296b7f3fdedac68f35391e Mon Sep 17 00:00:00 2001
From: Kir Kolyshkin <kolyshkin@gmail.com>
Date: Wed, 8 Apr 2026 15:30:58 -0700
Subject: [PATCH] libct/int: remove buffers.Stdin

It is never used.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
---
 libcontainer/integration/bench_test.go   | 1 -
 libcontainer/integration/execin_test.go  | 4 ----
 libcontainer/integration/seccomp_test.go | 4 ----
 libcontainer/integration/utils_test.go   | 3 ---
 4 files changed, 12 deletions(-)

diff --git a/libcontainer/integration/bench_test.go b/libcontainer/integration/bench_test.go
index 0375ee7f7..5499ee215 100644
--- a/libcontainer/integration/bench_test.go
+++ b/libcontainer/integration/bench_test.go
@@ -106,7 +106,6 @@ func BenchmarkExecInBigEnv(b *testing.B) {
 			Cwd:    "/",
 			Args:   []string{"env"},
 			Env:    env,
-			Stdin:  buffers.Stdin,
 			Stdout: buffers.Stdout,
 			Stderr: buffers.Stderr,
 		}
diff --git a/libcontainer/integration/execin_test.go b/libcontainer/integration/execin_test.go
index 414dcf9ea..d28166292 100644
--- a/libcontainer/integration/execin_test.go
+++ b/libcontainer/integration/execin_test.go
@@ -49,7 +49,6 @@ func TestExecIn(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"ps"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 	}
@@ -107,7 +106,6 @@ func testExecInRlimit(t *testing.T, userns bool) {
 		Cwd:    "/",
 		Args:   []string{"/bin/sh", "-c", "ulimit -n"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Rlimits: []configs.Rlimit{
@@ -357,7 +355,6 @@ func TestExecInEnvironment(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"/bin/env"},
 		Env:    execEnv,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 	}
@@ -483,7 +480,6 @@ func TestExecInOomScoreAdj(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"/bin/sh", "-c", "cat /proc/self/oom_score_adj"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 	}
diff --git a/libcontainer/integration/seccomp_test.go b/libcontainer/integration/seccomp_test.go
index 4e8e0912a..7ad040664 100644
--- a/libcontainer/integration/seccomp_test.go
+++ b/libcontainer/integration/seccomp_test.go
@@ -40,7 +40,6 @@ func TestSeccompDenySyslogWithErrno(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"dmesg"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Init:   true,
@@ -88,7 +87,6 @@ func TestSeccompDenySyslog(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"dmesg"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Init:   true,
@@ -143,7 +141,6 @@ func TestSeccompPermitWriteConditional(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"busybox", "ls", "/"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Init:   true,
@@ -195,7 +192,6 @@ func TestSeccompDenyWriteConditional(t *testing.T) {
 		Cwd:    "/",
 		Args:   []string{"busybox", "ls", "does_not_exist"},
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Init:   true,
diff --git a/libcontainer/integration/utils_test.go b/libcontainer/integration/utils_test.go
index b9407d2a4..346b5b733 100644
--- a/libcontainer/integration/utils_test.go
+++ b/libcontainer/integration/utils_test.go
@@ -55,14 +55,12 @@ func ptrInt(v int) *int {
 
 func newStdBuffers() *stdBuffers {
 	return &stdBuffers{
-		Stdin:  bytes.NewBuffer(nil),
 		Stdout: bytes.NewBuffer(nil),
 		Stderr: bytes.NewBuffer(nil),
 	}
 }
 
 type stdBuffers struct {
-	Stdin  *bytes.Buffer
 	Stdout *bytes.Buffer
 	Stderr *bytes.Buffer
 }
@@ -187,7 +185,6 @@ func runContainer(t testing.TB, config *configs.Config, args ...string) (buffers
 		Cwd:    "/",
 		Args:   args,
 		Env:    standardEnvironment,
-		Stdin:  buffers.Stdin,
 		Stdout: buffers.Stdout,
 		Stderr: buffers.Stderr,
 		Init:   true,