Move makerd to TOML-based manifest

Added the cpptoml library (and license), and moved to using that for
the initrd manifest. It's now possible to specify the `executable`
flag for files, and the kernel correctly only launches new processes
for the initrd files marked `executable`.

LICENSE.md

@@ -2,7 +2,8 @@
 
 Popcorn itself is released under the terms of the MIT license:
 
-> Copyright © 2018 Justin C. Miller, http://devjustinian.com <justin@devjustinian.com>
+> Copyright © 2018 Justin C. Miller, https://devjustinian.com
+> <justin@devjustinian.com>
 > 
 > Permission is hereby granted, free of charge, to any person obtaining a copy
 > of this software and associated documentation files (the “Software”), to deal
@@ -19,8 +20,8 @@ Popcorn itself is released under the terms of the MIT license:
 > FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 > AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 > LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-> THE SOFTWARE.
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+> SOFTWARE.
 
 # Included works
 
@@ -28,7 +29,7 @@ Popcorn includes and/or is derived from a number of other works, listed here.
 
 ## Catch2
 
-Popcorn uses [Catch2](http://github.com/catchorg/Catch2) for testing. Catch2 is
+Popcorn uses [Catch2](https://github.com/catchorg/Catch2) for testing. Catch2 is
 released under the terms of the Boost Software license:
 
 > Boost Software License - Version 1.0 - August 17th, 2003
@@ -55,6 +56,67 @@ released under the terms of the Boost Software license:
 > ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 > DEALINGS IN THE SOFTWARE.
 
+## cpptoml
+
+Popcorn uses the [cpptoml](https://github.com/skystrife/cpptoml) library for
+parsing TOML configuration files. cpptoml is released under the terms of the
+MIT license:
+
+> Copyright (c) 2014 Chase Geigle
+>
+> Permission is hereby granted, free of charge, to any person obtaining a copy of
+> this software and associated documentation files (the "Software"), to deal in
+> the Software without restriction, including without limitation the rights to
+> use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+> the Software, and to permit persons to whom the Software is furnished to do so,
+> subject to the following conditions:
+> 
+> The above copyright notice and this permission notice shall be included in all
+> copies or substantial portions of the Software.
+> 
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+> FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+> COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+> IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+> CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+## GNU-EFI
+
+Popcorn's UEFI bootloader initially used
+[GNU-EFI](https://gnu-efi.sourceforge.net), and still uses one file (the linker
+script for the bootloader) from that project. GNU-EFI claims to be released
+under the BSD license. Again, I could not find its specific license file, so I
+am reproducing a generic 3-clause BSD license (the most restrictive, so as not
+to assume any extra rights that may not actually be granted) for it here:
+
+> Copyright © Nigel Croxon
+> 
+> Redistribution and use in source and binary forms, with or without
+> modification, are permitted provided that the following conditions are met:
+> 
+> 1. Redistributions of source code must retain the above copyright notice, this
+>    list of conditions and the following disclaimer.
+> 
+> 2. Redistributions in binary form must reproduce the above copyright notice,
+>    this list of conditions and the following disclaimer in the documentation
+>    and/or other materials provided with the distribution.
+> 
+> 3. Neither the name of the copyright holder nor the names of its contributors
+>    may be used to endorse or promote products derived from this software
+>    without specific prior written permission.
+> 
+> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+> ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+> WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+> DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+> DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+> SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+> OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 ## Intel EFI Application Toolkit
 
 Popcorn's UEFI loader uses code from Intel's EFI Application toolkit. Relevant
@@ -94,39 +156,3 @@ assume any extra rights that may not actually be granted) for it here:
 > OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 > OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-## GNU-EFI
-
-Popcorn's UEFI bootloader initially used
-[GNU-EFI](https://gnu-efi.sourceforge.net), and still uses one file (the linker
-script for the bootloader) from that project. GNU-EFI claims to be released
-under the BSD license. Again, I could not find its specific license file, so I
-am reproducing a generic 3-clause BSD license (the most restrictive, so as not
-to assume any extra rights that may not actually be granted) for it here:
-
-> Copyright © Nigel Croxon
-> 
-> Redistribution and use in source and binary forms, with or without
-> modification, are permitted provided that the following conditions are met:
-> 
-> 1. Redistributions of source code must retain the above copyright notice, this
->    list of conditions and the following disclaimer.
-> 
-> 2. Redistributions in binary form must reproduce the above copyright notice,
->    this list of conditions and the following disclaimer in the documentation
->    and/or other materials provided with the distribution.
-> 
-> 3. Neither the name of the copyright holder nor the names of its contributors
->    may be used to endorse or promote products derived from this software
->    without specific prior written permission.
-> 
-> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-> ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-> WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-> DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-> DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-> SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-> OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-

assets/initrd.manifest

@@ -1,2 +0,0 @@
-#assets/fonts/tamsyn8x16r.psf screenfont.psf
-build/kernel/src/drivers/nulldrv/nulldrv nulldrv

assets/initrd.toml

@@ -0,0 +1,18 @@
+# This is the manifest for the initial ramdisk, read by the `makerd` tool.
+# The contents should be a table array of files to add to the ramdistk:
+#
+#  [[files]]
+#  dest = "foo.bar"             # Name of the file in the ramdisk
+#  source = "build/foo/foo.bar" # Location of the file from the project root
+#  executable = true            # Optional, default false. Whether this is an
+#                               # initial application for the kernel to execute
+#                               # on startup
+
+[[files]]
+dest = "screenfont.psf"
+source = "assets/fonts/tamsyn8x16r.psf"
+
+[[files]]
+dest = "nulldrv"
+source = "build/kernel/src/drivers/nulldrv/nulldrv"
+executable = true

src/kernel/main.cpp

@@ -83,7 +83,7 @@ kernel_main(popcorn_data *header)
 	initrd::disk ird(header->initrd);
 	log::info(logs::boot, "initrd loaded with %d files.", ird.files().count());
 	for (auto &f : ird.files())
-		log::info(logs::boot, "  %s (%d bytes).", f.name(), f.size());
+		log::info(logs::boot, "  %s%s (%d bytes).", f.executable() ? "*" : "", f.name(), f.size());
 
 	/*
 	pager->dump_pml4(nullptr, 0);
@@ -144,7 +144,7 @@ kernel_main(popcorn_data *header)
 	scheduler *sched = new (&scheduler::get()) scheduler(devices->get_lapic());
 
 	for (auto &f : ird.files()) {
-		//if (f.executable())
+		if (f.executable())
 			sched->create_process(f.name(), f.data(), f.size());
 	}
 

src/tools/makerd/entry.cpp

@@ -1,7 +1,10 @@
 #include "entry.h"
 
-entry::entry(const std::string &in, const std::string &out) :
-	m_in(in), m_out(out), m_file(in, std::ios_base::binary)
+entry::entry(const std::string &in, const std::string &out, bool executable) :
+	m_in(in),
+	m_out(out),
+	m_file(in, std::ios_base::binary),
+	m_exec(executable)
 {
 	m_file.seekg(0, std::ios_base::end);
 	m_size = m_file.tellg();

src/tools/makerd/entry.h

@@ -5,12 +5,13 @@
 class entry
 {
 public:
-	entry(const std::string &in, const std::string &out);
+	entry(const std::string &in, const std::string &out, bool executable = false);
 
 	inline const std::string & in() const { return m_in; }
 	inline const std::string & out() const { return m_out; }
 	inline const std::ifstream & file() const { return m_file; }
 
+	inline bool executable() const { return m_exec; }
 	inline size_t size() const { return m_size; }
 	inline bool good() const { return m_file.good(); }
 
@@ -19,5 +20,6 @@ private:
 	std::string m_out;
 	std::ifstream m_file;
 	size_t m_size;
+	bool m_exec;
 };
 

src/tools/makerd/main.cpp

@@ -3,6 +3,7 @@
 #include <iostream>
 #include <string>
 #include <vector>
+#include "cpptoml.h"
 #include "initrd/headers.h"
 #include "entry.h"
 
@@ -14,32 +15,37 @@ int main(int argc, char **argv)
 	}
 
 	std::vector<entry> entries;
-	std::ifstream manifest(argv[1]);
+	auto manifest = cpptoml::parse_file(argv[1]);
 
 	size_t files_size = 0;
 	size_t names_size = 0;
 
-	while (manifest.good()) {
-		std::string in, out;
+	auto files = manifest->get_table_array("files");
+	for (const auto &file : *files) {
+		auto dest = file->get_as<std::string>("dest");
+		if (!dest) {
+			std::cerr << "File has no destination!" << std::endl;
+			return 1;
+		}
 
-		manifest >> in;
-		if (in.length() < 1)
-			continue;
+		auto source = file->get_as<std::string>("source");
+		if (!source) {
+			std::cerr << "File " << *dest << " has no source!" << std::endl;
+			return 1;
+		}
 
-		manifest >> out;
-		if (in.front() == '#')
-			continue;
+		auto exec = file->get_as<bool>("executable").value_or(false);
 
-		entries.emplace_back(in, out);
+		entries.emplace_back(*source, *dest, exec);
 		const entry &e = entries.back();
 
 		if (!e.good()) {
-			std::cerr << "Error reading file: " << in << std::endl;
+			std::cerr << "Error reading file: " << *source << std::endl;
 			return 1;
 		}
 
 		files_size += e.size();
-		names_size += out.length() + 1;
+		names_size += dest->length() + 1;
 	}
 
 	std::fstream out(argv[2],
@@ -78,6 +84,9 @@ int main(int argc, char **argv)
 		fheader.length = e.size();
 		fheader.name_offset = name_offset;
 
+		if (e.executable())
+			fheader.flags |= initrd::file_flags::executable;
+
 		out.write(
 			reinterpret_cast<const char *>(&fheader),
 			sizeof(fheader));

wscript

@@ -155,8 +155,6 @@ def configure(ctx):
     ctx.env.append_value('CXXFLAGS', [
         '-g',
         '-std=c++14',
-        '-fno-exceptions',
-        '-fno-rtti',
     ])
 
     ctx.env.append_value('ASFLAGS', ['-felf64'])
@@ -176,7 +174,11 @@ def configure(ctx):
 
     ctx.setenv('kernel', env=base_bare)
     ctx.env.append_value('CFLAGS', ['-mcmodel=large'])
-    ctx.env.append_value('CXXFLAGS', ['-mcmodel=large'])
+    ctx.env.append_value('CXXFLAGS', [
+        '-mcmodel=large',
+        '-fno-exceptions',
+        '-fno-rtti',
+    ])
 
     for mod_path in ctx.env.LIBRARIES:
         ctx.recurse(mod_path)
@@ -195,7 +197,7 @@ def configure(ctx):
     ctx.find_program("dd", var="dd")
     common_configure(ctx)
 
-    ctx.env.CXXFLAGS = ['-g', '-std=c++14', '-fno-rtti']
+    ctx.env.CXXFLAGS = ['-g', '-std=c++14']
     ctx.env.LINKFLAGS = ['-g']
 
     for mod_path in ctx.env.LIBRARIES:
@@ -333,7 +335,7 @@ def build(bld):
         make_rd = makerd(env = bld.env)
         make_rd.set_inputs([
             out['tools'].make_node(join("src", "tools", "makerd", "makerd")),
-            src.make_node(join("assets", "initrd.manifest")),
+            src.make_node(join("assets", "initrd.toml")),
             ])
         make_rd.set_outputs([initrd])
         bld.add_to_group(make_rd)