user: implement mlibc as the libc, finally.

It's finally done..

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

ext2_root/usr/include/semaphore.h

@@ -0,0 +1,37 @@
+#ifndef _SEMAPHORE_H
+#define _SEMAPHORE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <bits/ansi/time_t.h>
+#include <bits/ansi/timespec.h>
+
+#define SEM_VALUE_MAX 0x7FFFFFFF
+#define SEM_FAILED ((sem_t *) 0)
+
+typedef struct sem_ {
+	unsigned int __mlibc_count;
+} sem_t;
+
+#ifndef __MLIBC_ABI_ONLY
+
+int sem_init(sem_t *__sem, int __pshared, unsigned int __initial_count);
+sem_t *sem_open(const char *__name, int __oflag, ...);
+int sem_close(sem_t *__sem);
+int sem_unlink(const char *__name);
+int sem_destroy(sem_t *__sem);
+int sem_wait(sem_t *__sem);
+int sem_trywait(sem_t *__sem);
+int sem_timedwait(sem_t *__sem, const struct timespec *__abstime);
+int sem_post(sem_t *__sem);
+int sem_getvalue(sem_t *__sem, int *__sval);
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_SEMAPHORE_H */