user: implement mlibc as the libc, finally.

It's finally done..

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

user/include/mlibc/sysdeps/ironclad/generic/mount.cpp

@@ -0,0 +1,20 @@
+#include <errno.h>
+#include <sys/mount.h>
+#include <bits/ensure.h>
+#include <sys/syscall.h>
+#include <string.h>
+
+int mount(const char *source, const char *target, int type, int flags) {
+	int ret;
+	size_t source_len = strlen(source);
+	size_t target_len = strlen(target);
+	SYSCALL6(SYSCALL_MOUNT, source, source_len, target, target_len, type, flags);
+	return ret;
+}
+
+int umount(const char *target, int flags) {
+	int ret;
+	size_t target_len = strlen(target);
+	SYSCALL3(SYSCALL_UMOUNT, target, target_len, flags);
+	return ret;
+}