user: implement mlibc as the libc, finally.

It's finally done..

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

ext2_root/usr/include/sys/wait.h

@@ -0,0 +1,40 @@
+
+#ifndef _SYS_WAIT_H
+#define _SYS_WAIT_H
+
+#include <bits/posix/id_t.h>
+#include <abi-bits/pid_t.h>
+/* for siginfo_t */
+#include <abi-bits/signal.h>
+#include <abi-bits/wait.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* According to POSIX, <sys/wait.h> does not make rusage available. */
+struct rusage;
+
+/* TODO: move to own file and include in sys/types.h */
+typedef enum {
+	P_ALL, P_PID, P_PGID, P_PIDFD
+} idtype_t;
+
+#ifndef __MLIBC_ABI_ONLY
+
+pid_t wait(int *__status);
+int waitid(idtype_t __idtype, id_t __id, siginfo_t *__siginfo, int __flags);
+pid_t waitpid(pid_t __pid, int *__status, int __flags);
+
+/* GNU extensions. */
+pid_t wait3(int *__status, int __options, struct rusage *__ru);
+pid_t wait4(pid_t __pid, int *__status, int __options, struct rusage *__ru);
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_WAIT_H */
+