apps+libc+libos: Remove _LUNA_SYSTEM_ERROR_EXTENSIONS and reorder headers

libluna/libos headers can now go after errno.h, so there's no reason to keep them separate.

apps/date.cpp

@@ -1,6 +1,5 @@
 #include <os/ArgumentParser.h>
 #include <os/File.h>
-
 #include <stddef.h>
 #include <stdlib.h>
 #include <time.h>

apps/init.cpp

@@ -1,12 +1,11 @@
+#include <errno.h>
+#include <fcntl.h>
 #include <luna/PathParser.h>
 #include <luna/String.h>
 #include <luna/Vector.h>
 #include <os/Directory.h>
 #include <os/File.h>
 #include <os/Process.h>
-
-#include <errno.h>
-#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

apps/ls.cpp

@@ -1,9 +1,8 @@
+#include <fcntl.h>
 #include <os/ArgumentParser.h>
 #include <os/Directory.h>
 #include <os/File.h>
 #include <os/FileSystem.h>
-
-#include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
 
@@ -39,11 +38,13 @@ Result<int> luna_main(int argc, char** argv)
 
         files = TRY(dir->list(filter));
     }
-    else
+    else if (os::FileSystem::exists(pathname))
     {
         auto str = TRY(String::from_string_view(pathname));
         TRY(files.try_append(move(str)));
     }
+    else
+        return err(ENOENT);
 
     if (!long_list)
     {

apps/sh.cpp

@@ -1,11 +1,10 @@
+#include <errno.h>
 #include <luna/String.h>
 #include <luna/Vector.h>
 #include <os/ArgumentParser.h>
 #include <os/File.h>
 #include <os/FileSystem.h>
 #include <os/Process.h>
-
-#include <errno.h>
 #include <pwd.h>
 #include <stddef.h>
 #include <stdio.h>

libc/src/env.cpp

@@ -1,7 +1,6 @@
+#include <errno.h>
 #include <luna/ScopeGuard.h>
 #include <luna/Vector.h>
-
-#include <errno.h>
 #include <stdlib.h>
 
 extern "C" char** environ;

libc/src/stdio.cpp

@@ -1,4 +1,3 @@
-#define _LUNA_SYSTEM_ERROR_EXTENSIONS
 #include <bits/errno-return.h>
 #include <fcntl.h>
 #include <luna/Format.h>

libc/src/stdlib.cpp

@@ -1,4 +1,3 @@
-#define _LUNA_SYSTEM_ERROR_EXTENSIONS
 #include <errno.h>
 #include <limits.h>
 #include <luna/Heap.h>

libc/src/sys/mman.cpp

@@ -1,4 +1,3 @@
-#define _LUNA_SYSTEM_ERROR_EXTENSIONS
 #include <bits/errno-return.h>
 #include <luna/Heap.h>
 #include <sys/mman.h>

libc/src/time.cpp

@@ -1,4 +1,3 @@
-#define _LUNA_SYSTEM_ERROR_EXTENSIONS
 #include <bits/errno-return.h>
 #include <luna/Check.h>
 #include <luna/Format.h>

libc/src/unistd.cpp

@@ -1,8 +1,7 @@
-#include <luna/StringBuilder.h>
-#include <luna/Vector.h>
-
 #include <bits/errno-return.h>
 #include <fcntl.h>
+#include <luna/StringBuilder.h>
+#include <luna/Vector.h>
 #include <stdarg.h>
 #include <stdint.h>
 #include <stdlib.h>

libos/src/Directory.cpp

@@ -1,8 +1,7 @@
-#include <luna/CString.h>
-#include <os/Directory.h>
-
 #include <errno.h>
 #include <fcntl.h>
+#include <luna/CString.h>
+#include <os/Directory.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 

libos/src/FileSystem.cpp

@@ -1,10 +1,9 @@
-#include <luna/String.h>
-#include <os/Directory.h>
-#include <os/FileSystem.h>
-
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <luna/String.h>
+#include <os/Directory.h>
+#include <os/FileSystem.h>
 #include <pwd.h>
 #include <stdlib.h>
 #include <sys/stat.h>

libos/src/Main.cpp

@@ -1,6 +1,5 @@
-#include <os/Main.h>
-
 #include <errno.h>
+#include <os/Main.h>
 #include <stdio.h>
 
 int g_argc;

libos/src/Process.cpp

@@ -1,6 +1,5 @@
-#include <os/Process.h>
-
 #include <errno.h>
+#include <os/Process.h>
 #include <sys/syscall.h>
 #include <unistd.h>