From 7a097f16eaa9aa6bbd10fc3759169bfe7ede8c8a Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Tue, 11 Oct 2022 17:31:06 +0200
Subject: [PATCH] apps: add a new example app which does all kinds of stdio
 misbehaving >.<

---
 apps/Makefile       |  2 +-
 apps/src/quota.c    | 22 ++++++++++++++++++++++
 kernel/src/main.cpp |  6 +++++-
 3 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 apps/src/quota.c

diff --git a/apps/Makefile b/apps/Makefile
index 10d8984a..c95a1265 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -1,4 +1,4 @@
-APPS := init fib leap art memeater
+APPS := init fib leap art memeater quota
 
 APPS_DIR := $(LUNA_ROOT)/apps
 APPS_SRC := $(APPS_DIR)/src
diff --git a/apps/src/quota.c b/apps/src/quota.c
new file mode 100644
index 00000000..670597ec
--- /dev/null
+++ b/apps/src/quota.c
@@ -0,0 +1,22 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main()
+{
+    if (open("/file/that/does/not/exist", O_RDONLY) < 0) { perror("open"); }
+    int sys = open("/sys", O_RDONLY);
+    if (sys < 0) { perror("open"); }
+    if (read(sys, NULL, 20) < 0) { perror("read"); }
+    char buf[20];
+    if (read(sys, buf, 20) < 0) { perror("read"); }
+    if (close(sys) < 0) { perror("close"); }
+    for (int i = 0; i < 10; i++)
+    {
+        if (open("/", O_RDONLY) < 0) { perror("open"); }
+    }
+    int exec;
+    if ((exec = open("/bin/quota", O_RDONLY)) < 0) { perror("open"); }
+    if (read(exec, buf, 20) < 0) { perror("read"); }
+    if (close(exec) < 0) { perror("close"); }
+}
\ No newline at end of file
diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index 6b681253..daebe4b2 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -123,7 +123,7 @@ extern "C" void _start()
         }
     });
 
-    uint64_t demo = Mersenne::get() % 5;
+    uint64_t demo = Mersenne::get() % 6;
 
     switch (demo)
     {
@@ -147,6 +147,10 @@ extern "C" void _start()
         kinfoln("Loading demo: memory eating program");
         Scheduler::load_user_task("bin/memeater");
         break;
+    case 5:
+        kinfoln("Loading demo: misbehaving program");
+        Scheduler::load_user_task("bin/quota");
+        break;
     default: break;
     }