[version] Kernel version and codename, shell uname cmd

kernel/include/version.h

@@ -0,0 +1,19 @@
+#ifndef VERSION_H
+#define VERSION_H
+
+char * __kernel_name;
+char * __kernel_version_format;
+
+int    __kernel_version_major;
+int    __kernel_version_minor;
+int    __kernel_version_lower;
+
+char * __kernel_version_suffix;
+char * __kernel_version_codename;
+
+char * __kernel_arch;
+
+char * __kernel_build_date;
+char * __kernel_build_time;
+
+#endif

kernel/misc/shell.c

@@ -25,6 +25,7 @@
 #include <tree.h>
 #include <process.h>
 #include <logging.h>
+#include <version.h>
 
 struct {
 	char path[1024];
@@ -462,6 +463,24 @@ uint32_t shell_cmd_mem(int argc, char * argv[]) {
 	return 0;
 }
 
+uint32_t shell_cmd_uname(int argc, char *argv[]) {
+	kprintf("Notice: This is as hell builtin. uname() is not implemented.\n");
+	char version_number[1024];
+	sprintf(version_number, __kernel_version_format,
+			__kernel_version_major,
+			__kernel_version_minor,
+			__kernel_version_lower,
+			__kernel_version_suffix);
+	kprintf("%s %s %s %s %s %s\n",
+			__kernel_name,
+			version_number,
+			__kernel_version_codename,
+			__kernel_build_date,
+			__kernel_build_time,
+			__kernel_arch);
+	return 0;
+}
+
 void install_commands() {
 	shell_install_command("cd",         shell_cmd_cd);
 	shell_install_command("ls",         shell_cmd_ls);
@@ -481,6 +500,7 @@ void install_commands() {
 	shell_install_command("dmesg",      shell_cmd_dmesg);
 	shell_install_command("kill",       shell_cmd_kill);
 	shell_install_command("mem",        shell_cmd_mem);
+	shell_install_command("uname",      shell_cmd_uname);
 }
 
 void add_path_contents() {

kernel/sys/version.c

@@ -0,0 +1,43 @@
+/* vim: tabstop=4 shiftwidth=4 noexpandtab
+ */
+
+#include <version.h>
+
+/* Kernel name. If you change this, you're not
+ * my friend any more. */
+char * __kernel_name = "toaru";
+
+/* This really shouldn't change, and if it does,
+ * always ensure it still has the correct arguments
+ * when used as a vsprintf() format. */
+char * __kernel_version_format = "%d.%d.%d-%s";
+
+/* Version numbers X.Y.Z */
+int    __kernel_version_major = 0;
+int    __kernel_version_minor = 0;
+int    __kernel_version_lower = 1;
+
+/* Kernel build suffix, which doesn't necessarily
+ * mean anything, but can be used to distinguish
+ * between different features included while
+ * building multiple kernels. */
+char * __kernel_version_suffix   = "testing";
+
+/* The release codename.
+ *
+ * History:
+ *  * 0.0.X have the codename "uiharu"
+ *  * 0.1.X will have the codename "saten"
+ *  * 1.0.X will have the codename "mikoto"
+ */
+char * __kernel_version_codename = "uiharu";
+
+/* Build architecture (should probably not be
+ * here as a string, but rather some sort of
+ * preprocessor macro, or pulled from a script) */
+char * __kernel_arch = "i686";
+
+/* Rebuild from clean to reset these. */
+char * __kernel_build_date = __DATE__;
+char * __kernel_build_time = __TIME__;
+