From 1f467580eed557e70d6857b9ba472c0b30f9fbb7 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Wed, 14 Feb 2024 17:23:26 +0200
Subject: [PATCH] Userspace: Add test for popen

---
 userspace/CMakeLists.txt            |  1 +
 userspace/test-popen/CMakeLists.txt | 16 +++++++++++++++
 userspace/test-popen/main.cpp       | 30 +++++++++++++++++++++++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 userspace/test-popen/CMakeLists.txt
 create mode 100644 userspace/test-popen/main.cpp

diff --git a/userspace/CMakeLists.txt b/userspace/CMakeLists.txt
index facadf46..85e158a3 100644
--- a/userspace/CMakeLists.txt
+++ b/userspace/CMakeLists.txt
@@ -34,6 +34,7 @@ set(USERSPACE_PROJECTS
 	test-framebuffer
 	test-globals
 	test-mouse
+	test-popen
 	test-sort
 	test-tcp
 	test-udp
diff --git a/userspace/test-popen/CMakeLists.txt b/userspace/test-popen/CMakeLists.txt
new file mode 100644
index 00000000..02c38f23
--- /dev/null
+++ b/userspace/test-popen/CMakeLists.txt
@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(test-popen CXX)
+
+set(SOURCES
+	main.cpp
+)
+
+add_executable(test-popen ${SOURCES})
+target_compile_options(test-popen PUBLIC -O2 -g)
+target_link_libraries(test-popen PUBLIC libc)
+
+add_custom_target(test-popen-install
+	COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/test-popen ${BANAN_BIN}/
+	DEPENDS test-popen
+)
diff --git a/userspace/test-popen/main.cpp b/userspace/test-popen/main.cpp
new file mode 100644
index 00000000..89d4cede
--- /dev/null
+++ b/userspace/test-popen/main.cpp
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char** argv)
+{
+	if (argc != 2)
+	{
+		fprintf(stderr, "usage: %s COMMAND\n", argv[0]);
+		return 1;
+	}
+
+	FILE* fp = popen(argv[1], "r");
+	if (fp == nullptr)
+	{
+		perror("popen");
+		return 1;
+	}
+
+	char buffer[128];
+	while (fgets(buffer, sizeof(buffer), fp) != NULL)
+		printf("%s", buffer);
+
+	if (pclose(fp) == -1)
+	{
+		perror("pclose");
+		return 1;
+	}
+
+	return 0;
+}