From 37daab6b504b1bfc6d0ce37b9ce7d1e5f65a5747 Mon Sep 17 00:00:00 2001
From: Johannes Weiss <johannesweiss@apple.com>
Date: Fri, 1 Dec 2017 14:58:04 +0000
Subject: [PATCH] integration test for blacklisted errnos

---
 .../test_02_blacklisted_errnos.sh             | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 sh-tests/tests_02_syscall_wrappers/test_02_blacklisted_errnos.sh

diff --git a/sh-tests/tests_02_syscall_wrappers/test_02_blacklisted_errnos.sh b/sh-tests/tests_02_syscall_wrappers/test_02_blacklisted_errnos.sh
new file mode 100644
index 00000000..97fa4db3
--- /dev/null
+++ b/sh-tests/tests_02_syscall_wrappers/test_02_blacklisted_errnos.sh
@@ -0,0 +1,91 @@
+#!/bin/bash
+
+set -eu
+
+swift_binary=swift
+here="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+if [[ ! -z "${SWIFT_EXEC-}" ]]; then
+    swift_binary="$(dirname "$SWIFT_EXEC")/swift"
+elif [[ "$(uname -s)" == "Linux" ]]; then
+    swift_binary=$(which swift)
+fi
+
+tmpdir=$(mktemp -d /tmp/.swift-nio-syscall-wrappers-sh-test_XXXXXX)
+mkdir "$tmpdir/syscallwrapper"
+cd "$tmpdir/syscallwrapper"
+swift package init --type=executable
+cat > "$tmpdir/syscallwrapper/Sources/syscallwrapper/main.swift" <<EOF
+#if os(macOS) || os(tvOS) || os(iOS) || os(watchOS)
+import Darwin
+#else
+import Glibc
+#endif
+public typealias IOVector = iovec
+
+
+var fds: [Int32] = [-1, -1]
+let pipeErr = pipe(&fds)
+if pipeErr != 0 {
+    // this program is expected to fail in correct operation
+    exit(0)
+}
+let makeEBADFHappen =  CommandLine.arguments.dropFirst().first == .some("EBADF")
+let makeEFAULTHappen = CommandLine.arguments.dropFirst().first == .some("EFAULT")
+var whatevs: UInt8 = 123
+_ = try? withUnsafePointer(to: &whatevs) { ptr in
+    print("makeEBADFHappen? \(makeEBADFHappen ? "YES" : "NO")")
+    print("makeEFAULTHappen ? \(makeEFAULTHappen ? "YES" : "NO")")
+    _ = try Posix.write(descriptor: makeEBADFHappen ? -1 : fds[0],
+                        pointer: makeEFAULTHappen ? UnsafePointer<UInt8>(bitPattern: 0xdeadbeef)! : ptr,
+                     size: 1)
+}
+exit(42)
+EOF
+
+cat > "$tmpdir/syscallwrapper/Package.swift" <<"EOF"
+// swift-tools-version:4.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "syscallwrapper",
+    dependencies: [],
+    targets: [
+        .target(
+            name: "syscallwrapper",
+            dependencies: ["CNIOLinux"]),
+        .target(
+            name: "CNIOLinux",
+            dependencies: []),
+    ]
+)
+EOF
+
+cp "$here/../../Tests/NIOTests/SystemCallWrapperHelpers.swift" \
+    "$here/../../Sources/NIO/System.swift" \
+    "$here/../../Sources/NIO/IO.swift" \
+    "$tmpdir/syscallwrapper/Sources/syscallwrapper"
+ln -s "$here/../../Sources/CNIOLinux" "$tmpdir/syscallwrapper/Sources"
+for mode in debug release; do
+    for error in EFAULT EBADF; do
+        temp_file="$tmp/stderr"
+        if "$swift_binary" run -c "$mode" -Xswiftc -DRUNNING_INTEGRATION_TESTS \
+            syscallwrapper "$error" 2> "$temp_file"; then
+
+            fail "exited successfully but was supposed to fail"
+        else
+            exit_code=$?
+            # expecting illegal instruction as it should fail with a blacklisted errno
+            if [[ "$mode" == "release" ]]; then
+                assert_equal 42 $exit_code
+            else
+                assert_equal $(( 128 + 4 )) $exit_code  # 4 == SIGILL
+                grep -q blacklisted\ errno "$temp_file"
+            fi
+        fi
+    done
+done
+
+rm -rf "$tmpdir"