fix: skip server requirements check based on file presence (microsoft#203729)

Author: deepak1556

cli/src/util/prereqs.rs

@@ -25,6 +25,7 @@ lazy_static! {
 }
 
 const NIXOS_TEST_PATH: &str = "/etc/NIXOS";
+const SKIP_REQ_FILE: &str = "/tmp/vscode-skip-server-requirements-check";
 
 pub struct PreReqChecker {}
 
@@ -52,13 +53,20 @@ impl PreReqChecker {
 
 	#[cfg(target_os = "linux")]
 	pub async fn verify(&self) -> Result<Platform, CodeError> {
-		let (is_nixos, gnu_a, gnu_b, or_musl) = tokio::join!(
+		let (is_nixos, skip_glibc_checks, or_musl) = tokio::join!(
 			check_is_nixos(),
-			check_glibc_version(),
-			check_glibcxx_version(),
+			check_skip_req_file(),
 			check_musl_interpreter()
 		);
 
+		let (gnu_a, gnu_b) = if !skip_glibc_checks {
+			tokio::join!(check_glibc_version(), check_glibcxx_version())
+		} else {
+			println!("!!! WARNING: Skipping server pre-requisite check !!!");
+			println!("!!! Server stability is not guaranteed. Proceed at your own risk. !!!");
+			(Ok(()), Ok(()))
+		};
+
 		if (gnu_a.is_ok() && gnu_b.is_ok()) || is_nixos {
 			return Ok(if cfg!(target_arch = "x86_64") {
 				Platform::LinuxX64
@@ -157,6 +165,15 @@ async fn check_is_nixos() -> bool {
 	fs::metadata(NIXOS_TEST_PATH).await.is_ok()
 }
 
+/// Do not remove this check.
+/// Provides a way to skip the server glibc requirements check from
+/// outside the install flow. A system process can create this
+/// file before the server is downloaded and installed.
+#[allow(dead_code)]
+async fn check_skip_req_file() -> bool {
+	fs::metadata(SKIP_REQ_FILE).await.is_ok()
+}
+
 #[allow(dead_code)]
 async fn check_glibcxx_version() -> Result<(), String> {
 	let mut libstdc_path: Option<String> = None;

resources/server/bin/code-server-linux.sh

@@ -9,8 +9,19 @@ esac
 
 ROOT="$(dirname "$(dirname "$(readlink -f "$0")")")"
 
+# Do not remove this check.
+# Provides a way to skip the server requirements check from
+# outside the install flow. A system process can create this
+# file before the server is downloaded and installed.
+skip_check=0
+if [ -f "/tmp/vscode-skip-server-requirements-check" ]; then
+	echo "!!! WARNING: Skipping server pre-requisite check !!!"
+	echo "!!! Server stability is not guaranteed. Proceed at your own risk. !!!"
+	skip_check=1
+fi
+
 # Check platform requirements
-if [ "$(echo "$@" | grep -c -- "--skip-requirements-check")" -eq 0 ]; then
+if [ "$(echo "$@" | grep -c -- "--skip-requirements-check")" -eq 0 ] && [ $skip_check -eq 0 ]; then
 	$ROOT/bin/helpers/check-requirements.sh
 	exit_code=$?
 	if [ $exit_code -ne 0 ]; then