user: implement mlibc as the libc, finally.

It's finally done..

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

user/include/mlibc/options/linux/generic/sched.cpp

@@ -0,0 +1,63 @@
+#include <bits/ensure.h>
+#include <errno.h>
+#include <sched.h>
+
+#include <mlibc/linux-sysdeps.hpp>
+#include <mlibc/posix-sysdeps.hpp>
+
+int sched_getcpu(void) {
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_getcpu, -1);
+	int cpu;
+	if(int e = mlibc::sys_getcpu(&cpu); e) {
+		errno = e;
+		return -1;
+	}
+	return cpu;
+}
+
+int setns(int fd, int nstype) {
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_setns, -1);
+	if(int e = mlibc::sys_setns(fd, nstype); e) {
+		errno = e;
+		return -1;
+	}
+	return 0;
+}
+
+int sched_getscheduler(pid_t pid) {
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_getscheduler, -1);
+	int policy;
+	if(int e = mlibc::sys_getscheduler(pid, &policy); e) {
+		errno = e;
+		return -1;
+	}
+	return policy;
+}
+
+int sched_getaffinity(pid_t pid, size_t cpusetsize, cpu_set_t *mask) {
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_getaffinity, -1);
+	if(int e = mlibc::sys_getaffinity(pid, cpusetsize, mask); e) {
+		errno = e;
+		return -1;
+	}
+	return 0;
+}
+
+int unshare(int flags) {
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_unshare, -1);
+	if(int e = mlibc::sys_unshare(flags); e) {
+		errno = e;
+		return -1;
+	}
+	return 0;
+}
+
+int sched_setaffinity(pid_t, size_t, const cpu_set_t *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+int clone(int (*)(void *), void *, int, void *, ...) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}