include/luares.h

@@ -4,6 +4,7 @@ extern char lua_boot[];
 extern char lua_component[];
 extern char lua_computer[];
 extern char lua_debug[];
+extern char lua_drive[];
 extern char lua_eeprom[];
 extern char lua_fbgpu[];
 extern char lua_filesystem[];
@@ -12,9 +13,11 @@ extern char lua_gpudetect[];
 extern char lua_init[];
 extern char lua_internet[];
 extern char lua_sandbox[];
+extern char lua_serial[];
 extern char lua_textgpu[];
 extern char lua_util_buffer[];
 extern char lua_util_color[];
 extern char lua_util_random[];
+extern char lua_uuidmgr[];
 extern char lua_winapigpu[];
 #endif

include/lupi.h

@@ -22,9 +22,13 @@ typedef unsigned short ushort;
 
 lua_State* getL();
 
+char * get_kbid(); // ugly hack
+
 void run_init(int argc, char **argv);
 void lupi_init();
 void luanative_start(lua_State *L);
+void serial_start(lua_State *L);
+void blk_start(lua_State *L);
 void fb_start(lua_State *L);
 void setup_modules(lua_State *L);
 void termutils_start(lua_State *L);

src/c/blkdev.c

@@ -0,0 +1,155 @@
+#include "lupi.h"
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <linux/fs.h>
+#include <linux/hdreg.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <string.h>
+
+struct blkdev {
+	int fd;
+	int secsize;
+	int platters;
+	size_t size;
+	char * buffer;
+};
+
+int blk_open(lua_State * L) {
+	char * path = luaL_checkstring(L, 1);
+	char rpath[255];
+	sprintf(rpath, "/dev/%s", path);
+	int fd = open(rpath, O_RDWR | O_DSYNC);
+	if (fd == -1) {
+		luaL_error(L, "Failed to open %s: %s", rpath, strerror(errno));
+	}
+	struct blkdev * dev = lua_newuserdata(L, sizeof(struct blkdev));
+	dev->fd = fd;
+	struct hd_driveid driveid;
+	if (ioctl(fd, HDIO_GET_IDENTITY, &driveid) < 0) {
+		//luaL_error("Failed to get identity for %s", rpath);
+		dev->platters = 3;
+		// Use another ioctl call to get sector size.
+		if (!ioctl(fd, BLKSSZGET, &dev->secsize)) {
+			// Fuck it, i guess it's 512 bytes.
+			dev->secsize = 512;
+			// Maybe a warning here?
+		}
+		dev->size = lseek(fd, 0, SEEK_END);
+		lseek(fd, 0, SEEK_SET);
+	} else {
+		dev->size = driveid.lba_capacity_2*driveid.sector_bytes;
+		dev->platters = driveid.cur_heads/2;
+		dev->secsize = driveid.sector_bytes;
+		if (dev->size == 0) {
+			dev->size = lseek(fd, 0, SEEK_END);
+			lseek(fd, 0, SEEK_SET);
+		}
+		if (dev->platters == 0) {
+			dev->platters = 3;
+		}
+		if (dev->secsize == 0) {
+			if (!ioctl(fd, BLKSSZGET, &dev->secsize)) {
+				// Fuck it, i guess it's 512 bytes.
+				dev->secsize = 512;
+				// Maybe a warning here too?
+			}
+		}
+	}
+	dev->buffer = malloc(dev->secsize);
+	return 1;
+}
+
+int blk_readbyte(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	off_t offset = luaL_checkinteger(L, 2);
+	lseek(dev->fd, offset-1, SEEK_SET);
+	uint8_t c = 0;
+	size_t ioc = 0;
+	if ((ioc = read(dev->fd, &c, 1)) != 1) {
+		luaL_error(L, "io error! %llu != %llu", ioc, 1);
+	}
+	lua_pushinteger(L, c);
+	return 1;
+}
+
+int blk_writebyte(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	off_t offset = luaL_checkinteger(L, 2);
+	long byte = luaL_checkinteger(L, 3);
+	if (byte > 255 || byte < 0)
+		luaL_error(L, "%lld is out of range (should be between 0 and 255)", byte);
+	uint8_t i = byte & 0xFF;
+	lseek(dev->fd, offset-1, SEEK_SET);
+	size_t ioc = 0;
+	if ((ioc = write(dev->fd, &i, 1)) != 1) {
+		luaL_error(L, "io error! %llu != %llu", ioc, 1);
+	}
+	return 0;
+}
+
+int blk_readsector(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	off_t offset = luaL_checkinteger(L, 2);
+	lseek(dev->fd, (offset-1)*dev->secsize, SEEK_SET);
+	size_t ioc = 0;
+	if ((ioc = read(dev->fd, dev->buffer, dev->secsize)) != dev->secsize) {
+		luaL_error(L, "io error! %llu != %llu", ioc, dev->secsize);
+	}
+	lua_pushlstring(L, dev->buffer, dev->secsize);
+	return 1;
+}
+
+int blk_writesector(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	off_t offset = luaL_checkinteger(L, 2);
+	size_t len = 0;
+	char * sec = luaL_checklstring(L, 3, &len);
+	lseek(dev->fd, (offset-1)*dev->secsize, SEEK_SET);
+	if (len > dev->secsize) {
+		len = dev->secsize;
+	}
+	size_t ioc = 0;
+	if ((ioc = write(dev->fd, sec, len)) != len) {
+		luaL_error(L, "io error! %llu != %llu", ioc, dev->secsize);
+	}
+	return 0;
+}
+
+int blk_getsecsize(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	lua_pushinteger(L, dev->secsize);
+	return 1;
+}
+
+int blk_getsize(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	lua_pushinteger(L, dev->size);
+	return 1;
+}
+
+int blk_getplatcount(lua_State * L) {
+	struct blkdev * dev = lua_touserdata(L, 1);
+	lua_pushinteger(L, dev->platters);
+	return 1;
+}
+
+void blk_start(lua_State * L) {
+	struct luaL_Reg blklib[] = {
+		{"open", blk_open},
+		{"readbyte", blk_readbyte},
+		{"writebyte", blk_writebyte},
+		{"readsector", blk_readsector},
+		{"writesector", blk_writesector},
+		{"secsize", blk_getsecsize},
+		{"size", blk_getsize},
+		{"platcount", blk_getplatcount},
+		{NULL, NULL}
+	};
+	luaL_openlib(L, "blk", blklib, 0);
+}

src/c/event/event.c

@@ -35,7 +35,7 @@ static void handleStdin(evutil_socket_t fd, short what, void *eventc) {
 
     lua_getglobal(L, "pushEvent");
     lua_pushstring(L, "key_down");
-    lua_pushstring(L, "TODO:SetThisUuid");/* Also in textgpu.lua */
+    lua_pushstring(L, get_kbid());/* Also in textgpu.lua */
     lua_pushnumber(L, buf);
     lua_pushnumber(L, -1);
     lua_pushstring(L, "root");
@@ -43,7 +43,7 @@ static void handleStdin(evutil_socket_t fd, short what, void *eventc) {
 
     lua_getglobal(L, "pushEvent");
     lua_pushstring(L, "key_up");
-    lua_pushstring(L, "TODO:SetThisUuid");
+    lua_pushstring(L, get_kbid());
     lua_pushnumber(L, buf);
     lua_pushnumber(L, -1);
     lua_pushstring(L, "root");

src/c/init.c

@@ -12,6 +12,7 @@ void lupi_init() {
     mount(NULL, "/sys", "sysfs", 0, NULL);
     mount(NULL, "/proc", "procfs", 0, NULL);
     mount(NULL, "/tmp", "tmpfs", 0, NULL);
+    mount(NULL, "/dev", "devtmpfs", 0, NULL);
   }
   struct statvfs fsstat;
 

src/c/lnative.c

@@ -476,6 +476,20 @@ static int l_debug (lua_State *L) {
 }
 #endif
 
+char * kbid = "TODO:SetThisUuid";
+
+static int l_setkbid(lua_State *L) {
+  size_t len = 0;
+  char * id = luaL_checklstring(L, 1, &len);
+  kbid = malloc(len+1);
+  memcpy(kbid, id, len);
+  return 0;
+}
+
+char * get_kbid() {
+  return kbid;
+}
+
 void luanative_start(lua_State *L) {
 
   struct timeval tp;
@@ -511,6 +525,7 @@ void luanative_start(lua_State *L) {
     {"pull", l_pull},
     {"platform", l_platform},
     {"isinit", l_isinit},
+    {"setkbid", l_setkbid},
     #ifdef DEBUG
       {"debug", l_debug},
     #endif

src/c/modules.c

@@ -14,17 +14,20 @@ void setup_modules(lua_State *L) {
   pushstuple(L, "component",    lua_component);
   pushstuple(L, "computer",     lua_computer);
   pushstuple(L, "debug",        lua_debug);
+  pushstuple(L, "drive",        lua_drive);
   pushstuple(L, "eeprom",       lua_eeprom);
   pushstuple(L, "filesystem",   lua_filesystem);
   pushstuple(L, "gpio",         lua_gpio);
   pushstuple(L, "gpudetect",    lua_gpudetect);
   pushstuple(L, "internet",     lua_internet);
   pushstuple(L, "sandbox",      lua_sandbox);
+  pushstuple(L, "serial",       lua_serial);
   pushstuple(L, "textgpu",      lua_textgpu);
   pushstuple(L, "fbgpu",        lua_fbgpu);
   pushstuple(L, "winapigpu",    lua_winapigpu);
   pushstuple(L, "color",        lua_util_color);
   pushstuple(L, "random",       lua_util_random);
+  pushstuple(L, "uuidmgr",      lua_uuidmgr);
   pushstuple(L, "buffer",       lua_util_buffer);
 
   pushstuple(L, "eepromDefault",  res_eepromDefault);

src/c/run.c

@@ -31,6 +31,8 @@ void run_init(int argc, char **argv) {
 #endif
   fb_start        (L);
   termutils_start (L);
+  serial_start    (L);
+  blk_start       (L);
   event_prepare();
 
   int status = luaL_loadbuffer(L, lua_init, strlen(lua_init), "=INIT");

src/c/serial.c

@@ -0,0 +1,159 @@
+#include "lupi.h"
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <termios.h>
+#include <sys/stat.h>
+
+int s_listports(lua_State * L) {
+	DIR * d = opendir("/sys/class/tty");
+	struct dirent * ent = NULL;
+	struct stat statbuf;
+	char path[255];
+	char linkpath[255];
+	lua_newtable(L);
+	size_t index = 1;
+	while ((ent = readdir(d)) != NULL) {
+		sprintf(path, "/sys/class/tty/%s/device", ent->d_name);
+		if (stat(path, &statbuf) == 0) {
+			readlink(path, linkpath, 255);
+			if (strstr(linkpath, "serial8250") == NULL) {
+				// We have a serial port
+				lua_pushinteger(L, index);
+				lua_pushstring(L, ent->d_name);
+				lua_settable(L, -3);
+			}
+		}
+	}
+	return 1;
+}
+
+struct baudrate {
+	uint32_t baud;
+	tcflag_t flags;
+};
+
+// taken from here: https://man7.org/linux/man-pages/man3/termios.3.html
+struct baudrate baudrates[] = {
+	{0, B0},
+	{50, B50},
+	{75, B75},
+	{110, B110},
+	{134, B134},
+	{150, B150},
+	{200, B200},
+	{300, B300},
+	{600, B600},
+	{1200, B1200},
+	{1800, B1800},
+	{2400, B2400},
+	{4800, B4800},
+	{9600, B9600},
+	{19200, B19200},
+	{38400, B38400},
+	{57600, B57600},
+	{115200, B115200},
+	{230400, B230400}
+};
+
+struct baudrate * getbaud(uint32_t baud) {
+	for (size_t i=0; i<sizeof(baudrates)/sizeof(struct baudrate); ++i) {
+		if (baudrates[i].baud == baud) {
+			return &baudrates[i];
+		} else if (baudrates[i].baud > baud) {
+			return &baudrates[i-1];
+		}
+	}
+	return getbaud(230400);
+}
+
+struct sport {
+	uint32_t baudrate;
+	int fd;
+	struct termios options;
+};
+
+int s_openport(lua_State * L) {
+	char * path = luaL_checkstring(L, 1);
+	struct sport * port = lua_newuserdata(L, sizeof(struct sport));
+	port->baudrate = 9600;
+	char rpath[255];
+	sprintf(rpath, "/dev/%s", path);
+	port->fd = open(rpath, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
+	if (port->fd == -1)
+		luaL_error(L, "unable to open port %s: ", path, strerror(errno));
+	tcgetattr(port->fd, &port->options);
+	cfsetispeed(&port->options, B9600);
+	cfsetospeed(&port->options, B9600);
+	tcsetattr(port->fd, TCSANOW, &port->options);
+	return 1;
+}
+
+int s_setbaudrate(lua_State * L) {
+	struct sport * port = lua_touserdata(L, 1);
+	long raw_br = luaL_checkinteger(L, 2);
+	struct baudrate * br = getbaud(raw_br & 0xFFFFFFFF);
+	//port->options.c_cflag &= ~(CBAUD);
+	//port->options.c_cflag |= br->flags;
+	cfsetispeed(&port->options, br->flags);
+	cfsetospeed(&port->options, br->flags);
+	port->baudrate = br->baud;
+	lua_pushinteger(L, br->baud);
+	port->options.c_cflag &= ~PARENB;
+	port->options.c_cflag &= ~CSTOPB;
+	port->options.c_cflag &= ~CSIZE;
+	port->options.c_cflag |= CS8;
+	tcsetattr(port->fd, TCSANOW, &port->options);
+	return 1;
+}
+
+int s_getbaudrate(lua_State * L) {
+	struct sport * port = lua_touserdata(L, 1);
+	lua_pushinteger(L, port->baudrate);
+	return 1;
+}
+
+int s_write(lua_State * L) {
+	struct sport * port = lua_touserdata(L, 1);
+	size_t len = 0;
+	char * data = luaL_checklstring(L, 2, &len);
+	size_t ioc = 0;
+	if ((ioc = write(port->fd, data, len)) != len) {
+		luaL_error(L, "io error! %llu != %llu", ioc, len);
+	}
+	return 0;
+}
+
+int s_read(lua_State * L) {
+	struct sport * port = lua_touserdata(L, 1);
+	char buffer[2048]; // Max packet size
+	long size = luaL_checkinteger(L, 2);
+	size_t ioc = read(port->fd, buffer, size);
+	if (ioc != size && ioc != 0) {
+		luaL_error(L, "io error! %llu != %llu or 0", ioc, size);
+	} else if (ioc != 0) {
+		lua_pushlstring(L, buffer, size);
+		return 1;
+	}
+	return 0;	
+}
+
+void serial_start(lua_State * L) {
+	struct luaL_Reg seriallib[] = {
+		{"open", s_openport},
+		{"list", s_listports},
+		{"write", s_write},
+		{"read", s_read},
+		{"setbaud", s_setbaudrate},
+		{"getbaud", s_getbaudrate},
+		{NULL, NULL}
+	};
+	luaL_openlib(L, "serial", seriallib, 0);
+}

src/lua/core/component.lua

@@ -109,7 +109,7 @@ function api.invoke(address, method, ...)
     local msg = tostring((native.uptime() - start) / 1000) .. " [+" .. native.uptime() - last .. "] " .. caller.short_src .. ":".. caller.currentline .. " > c.invoke(" .. address .. "): "
       .. components[address].type ..  "." .. method
       .. "(" .. table.concat(t, ", ") .. ")"
-    native.log(msg)
+    --native.log(msg)
   end
   return components[address].rawproxy[method](...)
 end

src/lua/core/drive.lua

@@ -0,0 +1,74 @@
+local drive = {}
+
+function drive.register()
+	local list = native.fs_list("/sys/block")
+	for _, ent in ipairs(list) do
+		-- Match hard drives. floppy drives, an rewindable tape drives
+		if (ent:match("sd%a%d*") or ent:match("hd%a%d*") or ent:match("fd%d+") or ent:match("n?st%d+[lma]?") or ent:match("n?ht%d+[lma]?")) then
+		--if true then
+			lprint("Attempting to open: "..ent)
+			local ok, disk = pcall(blk.open, ent)
+			if ok then
+				local nh = io.open("/sys/block/"..ent.."/device/model", "r")
+				local name = nh:read("*a"):gsub("%s+$", "")
+				nh:close()
+				nh = io.open("/sys/block/"..ent.."/device/vendor", "r")
+				local vendor = nh:read("*a"):gsub("%s+$", "")
+				nh:close()
+				nh = io.open("/sys/block/"..ent.."/device/wwid", "r")
+				local wwid
+				if nh then
+					wwid = nh:read("*a"):gsub("%s+$", "")
+					nh:close()
+				end
+				
+				local component = {}
+
+				function component.readByte(offset)
+					return blk.readbyte(disk, offset)
+				end
+
+				function component.writeByte(offset, value)
+					return blk.writebyte(disk, offset, value)
+				end
+
+				function component.getLabel()
+					return name
+				end
+
+				function component.setLabel(str)
+					-- stub
+					return name
+				end
+
+				function component.readSector(sec)
+					return blk.readsector(disk, sec)
+				end
+
+				function component.writeSector(sec, val)
+					return blk.writesector(disk, sec, val)
+				end
+
+				function component.getPlatterCount()
+					return blk.platcount(disk)
+				end
+
+				function component.getSectorSize()
+					return blk.secsize(disk)
+				end
+
+				function component.getCapacity()
+					return blk.size(disk)
+				end
+
+				local gid = wwid or (vendor.." "..name.." "..ent)
+
+				modules.component.api.register(modules.uuidmgr.lookup("drive", gid), "drive", component)
+			else
+				lprint("Can't open blkdev: "..ent..": "..disk)
+			end
+		end
+	end
+end
+
+return drive

src/lua/core/eeprom.lua

@@ -62,7 +62,7 @@ function eeprom.register()
   function component.makeReadonly()
     return false, "Method stub"
   end
-  modules.component.api.register(nil, "eeprom", component)
+  modules.component.api.register(modules.uuidmgr.lookup("eeprom", "lmao"), "eeprom", component)
 end
 
 return eeprom

src/lua/core/fbgpu.lua

@@ -165,9 +165,9 @@ function fbgpu.start()
   termutils.init()
   write("\x1b[?25l") --Disable cursor
 
-  modules.component.api.register(nil, "gpu", gpu)
+  modules.component.api.register(modules.uuidmgr.lookup("gpu", "fbgpu"), "gpu", gpu)
-  screenAddr = modules.component.api.register(nil, "screen", {getKeyboards = function() return {"TODO:SetThisUuid"} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
+  screenAddr = modules.component.api.register(modules.uuidmgr.lookup("screen", "lmao"), "screen", {getKeyboards = function() return {modules.uuidmgr.lookup("keyboard", "lmao")} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
-  modules.component.api.register("TODO:SetThisUuid", "keyboard", {})
+  modules.component.api.register(modules.uuidmgr.lookup("keyboard", "lmao"), "keyboard", {})
 
   deadhooks[#deadhooks + 1] = function()
     write("\x1b[?25h") --Enable cursor on quit

src/lua/core/filesystem.lua

@@ -50,7 +50,7 @@ local function concat(pathA, pathB, ...)
   return canonical(_concat(2, pathA, pathB, ...))
 end
 
-function filesystem.register(basePath, uuid)
+function filesystem.register(basePath, identifier)
   checkArg(1, basePath, "string")
 
   if not native.fs_exists(basePath) then
@@ -156,7 +156,7 @@ function filesystem.register(basePath, uuid)
     checkArg(1, value, "number")
     return value --TODO: Implement, use real labels
   end
-  return modules.component.api.register(uuid, "filesystem", fs)
+  return modules.component.api.register(modules.uuidmgr.lookup("filesystem", identifier or basePath), "filesystem", fs)
 end
 
 return filesystem

src/lua/core/gpio.lua

@@ -68,7 +68,7 @@ gpio.register = function ()
     end
     return _read("/sys/class/gpio/gpio" .. pin .. "/value")
   end
-  return modules.component.api.register(uuid, "gpio", component)
+  return modules.component.api.register(modules.uuidmgr.lookup("gpio", "lmao"), "gpio", component)
 end
 
 return gpio

src/lua/core/init.lua

@@ -44,6 +44,10 @@ lprint = function (...)
 end
 
 lprint("LuPI L1 INIT")
+local ports = serial.list()
+for i=1, #ports do
+  lprint(ports[i])
+end
 modules = {}
 deadhooks = {}
 
@@ -74,10 +78,14 @@ function main()
     loadModule("debug")
   end
   loadModule("random")
+  loadModule("uuidmgr")
   loadModule("color")
   loadModule("buffer")
 
-  modules.address = modules.random.uuid() --TODO: PREALPHA: Make constant
+  --modules.address = modules.random.uuid() --TODO: PREALPHA: Make constant
+  modules.address = modules.uuidmgr.lookup("modules", "lmao") --Made constant
+  native.setkbid(modules.uuidmgr.lookup("keyboard", "lmao"))
+
 
   --Core
   loadModule("component")
@@ -90,6 +98,8 @@ function main()
   loadModule("gpudetect")
   loadModule("filesystem")
   loadModule("internet")
+  loadModule("serial")
+  loadModule("drive")
 
   --Userspace
   loadModule("sandbox")
@@ -99,19 +109,20 @@ function main()
   modules.component.prepare()
   modules.computer.prepare()
   _G.pushEvent = modules.computer.api.pushSignal
-
+  modules.serial.register()
+  modules.drive.register()
   modules.eeprom.register()
   modules.gpio.register()
   modules.internet.start()
-  modules.filesystem.register("root")
+  modules.filesystem.register("root", "root")
   if native.debug and native.platform():match("unix") then
-    modules.filesystem.register("/", "11111111-1111-1111-1111-111111111111")
+    modules.filesystem.register("/", "realroot")
   end
   if native.platform():match("unix") then
-    modules.computer.tmp = modules.filesystem.register("/tmp/lupi-" .. modules.random.uuid())
+    modules.computer.tmp = modules.filesystem.register("/tmp/lupi-" .. modules.random.uuid(), "tmpfs")
   else
     native.fs_mkdir("tmp")
-    modules.computer.tmp = modules.filesystem.register("tmp/lupi-" .. modules.random.uuid())
+    modules.computer.tmp = modules.filesystem.register("tmp/lupi-" .. modules.random.uuid(), "tmpfs")
     --TODO: cleaning hook or something
   end
 
@@ -120,7 +131,7 @@ function main()
   if native.debug then
     modules.debug.hook()
   end
-
+  modules.uuidmgr.store()
   modules.boot.boot()
 end
 

src/lua/core/internet.lua

@@ -157,7 +157,7 @@ function internet.start()
     }
   end
 
-  modules.component.api.register(nil, "internet", component)
+  modules.component.api.register(modules.uuidmgr.lookup("internet", "lmao"), "internet", component)
 end
 
 return internet

src/lua/core/serial.lua

@@ -0,0 +1,32 @@
+local com = {}
+
+function com.register()
+	local ports = serial.list()
+	for i=1, #ports do
+		lprint("Serial port: "..ports[i])
+		local component = {}
+		local ok, dev = pcall(serial.open, ports[i])
+		if not dev then lprint("Can't open port: "..ports[i]..": "..dev) goto continue end
+		--lprint(dev)
+		function component.setBaudRate(baud)
+			return serial.setbaud(dev, baud)
+		end
+
+		function component.getBaudRate()
+			return serial.getbaud(dev)
+		end
+
+		function component.write(s)
+			return serial.write(dev, s)
+		end
+
+		function component.read(amt)
+			return serial.read(dev, amt)
+		end
+
+		modules.component.api.register(modules.uuidmgr.lookup("serial", ports[i]), "serial", component)
+		::continue::
+	end
+end
+
+return com

src/lua/core/textgpu.lua

@@ -255,9 +255,9 @@ function textgpu.start()
   gpu.setForeground(0xFFFFFF)
   gpu.setBackground(0x000000)
 
-  local gpuaddr = modules.component.api.register(nil, "gpu", gpu)
+  local gpuaddr = modules.component.api.register(modules.uuidmgr.lookup("gpu", "text"), "gpu", gpu)
-  screenAddr = modules.component.api.register(nil, "screen", {getKeyboards = function() return {"TODO:SetThisUuid"} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
+  screenAddr = modules.component.api.register(modules.uuidmgr.lookup("screen", "lmao"), "screen", {getKeyboards = function() return {modules.uuidmgr.lookup("keyboard", "lmao")} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
-  modules.component.api.register("TODO:SetThisUuid", "keyboard", {})
+  modules.component.api.register(modules.uuidmgr.lookup("keyboard", "lmao"), "keyboard", {})
 
   deadhooks[#deadhooks + 1] = function()
     write("\x1b[?25h\x1b[" .. ((h-1)|0) .. ";1H") --Enable cursor on quit

src/lua/core/uuidmgr.lua

@@ -0,0 +1,72 @@
+local uuidmgr = {
+	fileversion = 0
+}
+
+local uuidstorage = {}
+
+local storeheader = "c36HH" -- oops
+
+do
+	local store = io.open("uuidstore.dat", "r")
+	if store then
+		if native.debug then lprint("DEBUG: Loading uuidstore.dat...") end
+		pcall(function()
+			local version, count = string.unpack("IH", store:read(6))
+			if native.debug then lprint(string.format("DEBUG: File version %u, count %u", version, count)) end
+			if version > uuidmgr.fileversion then
+				lprint("ERROR: Invalid version!")
+				error("invalid version")
+			end
+			for i=1, count do
+				local uuid, clen, ilen = storeheader:unpack(store:read(storeheader:packsize()))
+				local cname, id = store:read(clen), store:read(ilen)
+				uuidstorage[cname] = uuidstorage[cname] or {}
+				uuidstorage[cname][id] = uuid
+				if native.debug then lprint(string.format("DEBUG: Found %s:%s's UUID of %s", cname, id, uuid)) end
+			end
+			store:close()
+		end)
+	end
+end
+
+function uuidmgr.lookup(component, identifier)
+	uuidstorage[component] = uuidstorage[component] or {}
+	local uuid = uuidstorage[component][identifier]
+	if not uuid then
+		uuid = modules.random.uuid()
+		if native.debug then
+			lprint(string.format("DEBUG: Registed component of type %s with identifier %s as uuid %s", component, identifier, uuid))
+		end
+		uuidstorage[component][identifier] = uuid
+		uuidmgr.store()
+	else
+		if native.debug then
+			lprint(string.format("DEBUG: Looked up component of type %s with identifier %s as uuid %s", component, identifier, uuid))
+		end
+	end
+	return uuid
+end
+
+function uuidmgr.store()
+	local store = io.open("uuidstore.dat", "w")
+	local saved_ids = {}
+	for component, ids in pairs(uuidstorage) do
+		for id, uuid in pairs(ids) do
+			table.insert(saved_ids, {uuid=uuid, component=component, id=id})
+		end
+	end
+	if native.debug then
+		lprint(string.format("DEBUG: Saving %d static UUIDs", #saved_ids))
+	end
+	store:write(string.pack("IH", uuidmgr.fileversion, #saved_ids))
+	for i=1, #saved_ids do
+		local uuid, component, id = saved_ids[i].uuid, saved_ids[i].component, saved_ids[i].id
+		store:write(storeheader:pack(uuid, #component, #id),component,id)
+		if native.debug then
+			lprint(string.format("DEBUG: Saving %s:%s as %s", component, id, uuid))
+		end
+	end
+	store:close()
+end
+
+return uuidmgr

src/lua/core/winapigpu.lua

@@ -158,9 +158,9 @@ function wingpu.start()
     lprint("Couldn't open window: " .. tostring(reason))
   end
 
-  modules.component.api.register(nil, "gpu", gpu)
+  modules.component.api.register(modules.uuidmgr.lookup("gpu", "wingpu"), "gpu", gpu)
-  screenAddr = modules.component.api.register(nil, "screen", {getKeyboards = function() return {"TODO:SetThisUuid"} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
+  screenAddr = modules.component.api.register(modules.uuidmgr.lookup("screen", "lmao"), "screen", {getKeyboards = function() return {modules.uuidmgr.lookup("keyboard", "lmao")} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
-  modules.component.api.register("TODO:SetThisUuid", "keyboard", {})
+  modules.component.api.register(modules.uuidmgr.lookup("keyboard", "lmao"), "keyboard", {})
 
   return s
 end