--- /dev/null
+#ifndef _LWK_POSIX_TYPES_H
+#define _LWK_POSIX_TYPES_H
+
+#include <lwk/stddef.h>
+
+/*
+ * This allows for 1024 file descriptors: if NR_OPEN is ever grown
+ * beyond that you'll have to change this too. But 1024 fd's seem to be
+ * enough even for such "real" unices like OSF/1, so hopefully this is
+ * one limit that doesn't have to be changed [again].
+ *
+ * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
+ * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
+ * place for them. Solved by having dummy defines in <sys/time.h>.
+ */
+
+/*
+ * Those macros may have been defined in <gnu/types.h>. But we always
+ * use the ones here.
+ */
+#undef __NFDBITS
+#define __NFDBITS (8 * sizeof(unsigned long))
+
+#undef __FD_SETSIZE
+#define __FD_SETSIZE 1024
+
+#undef __FDSET_LONGS
+#define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)
+
+#undef __FDELT
+#define __FDELT(d) ((d) / __NFDBITS)
+
+#undef __FDMASK
+#define __FDMASK(d) (1UL << ((d) % __NFDBITS))
+
+typedef struct {
+ unsigned long fds_bits [__FDSET_LONGS];
+} __kernel_fd_set;
+
+/* Type of a signal handler. */
+typedef void (*__kernel_sighandler_t)(int);
+
+/* Type of a SYSV IPC key. */
+typedef int __kernel_key_t;
+typedef int __kernel_mqd_t;
+
+#include <arch/posix_types.h>
+
+#endif /* _LWK_POSIX_TYPES_H */
