Update kernel

syscalls/native/uname.cpp

@@ -0,0 +1,69 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <syscalls.hpp>
+
+#include <memory.hpp>
+#include <utsname.h>
+#include <lock.hpp>
+#include <exec.hpp>
+#include <errno.h>
+#include <debug.h>
+
+#include "../../syscalls.h"
+#include "../../kernel.h"
+
+using Tasking::PCB;
+using namespace Memory;
+
+/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/uname.html */
+int sys_uname(SysFrm *, struct utsname *buf)
+{
+	assert(sizeof(struct utsname) < PAGE_SIZE);
+
+	Tasking::PCB *pcb = thisProcess;
+	Memory::Virtual vmm(pcb->PageTable);
+
+	if (!vmm.Check(buf, Memory::US))
+	{
+		warn("Invalid address %#lx", buf);
+		return -EFAULT;
+	}
+
+	auto pBuf = pcb->PageTable->Get(buf);
+
+	struct utsname uname =
+	{
+		/* TODO: This shouldn't be hardcoded */
+		.sysname = KERNEL_NAME,
+		.nodename = "fennix",
+		.release = KERNEL_VERSION,
+		.version = KERNEL_VERSION,
+#if defined(a64)
+		.machine = "x86_64",
+#elif defined(a32)
+		.machine = "i386",
+#elif defined(aa64)
+		.machine = "arm64",
+#elif defined(aa32)
+		.machine = "arm",
+#endif
+	};
+
+	memcpy(pBuf, &uname, sizeof(struct utsname));
+	return 0;
+}