26 files changed, 181 insertions, 133 deletions
diff --git a/sysdeps/generic/Makefile b/sysdeps/generic/Makefile
index 5513ca998c..110669ccb5 100644
--- a/sysdeps/generic/Makefile
+++ b/sysdeps/generic/Makefile
@@ -41,7 +41,7 @@ $(objpfx)siglist.c: $(objpfx)make_siglist
 	mv $@-tmp $@
 
 make_siglist-CFLAGS = -DSIGNUM_H=\"$(shell pwd)/$(firstword $(wildcard \
-				   $(+sysdep_dirs:%=%/signum.h)))\"
+				   $(+sysdep_dirs:%=%/bits/signum.h)))\"
 $(objpfx)make_siglist: $(sysdep_dir)/generic/make_siglist.c
 	$(native-compile)
 
diff --git a/sysdeps/generic/abort.c b/sysdeps/generic/abort.c
index c1969f4d1f..a38022a1a9 100644
--- a/sysdeps/generic/abort.c
+++ b/sysdeps/generic/abort.c
@@ -16,7 +16,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#include <libc-lock.h>
+#include <bits/libc-lock.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/sysdeps/generic/confname.h b/sysdeps/generic/bits/confname.h
index 5b5cf742b6..5b5cf742b6 100644
--- a/sysdeps/generic/confname.h
+++ b/sysdeps/generic/bits/confname.h
diff --git a/sysdeps/generic/ioctl-types.h b/sysdeps/generic/bits/ioctl-types.h
index 50fe19adcf..1d5c8a002f 100644
--- a/sysdeps/generic/ioctl-types.h
+++ b/sysdeps/generic/bits/ioctl-types.h
@@ -17,8 +17,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _IOCTL_TYPES_H
-#define _IOCTL_TYPES_H 1
+/*
+ * Never include this file directly; use <sys/ioctl.h> instead.
+ */
+
+#ifndef _BITS_IOCTL_TYPES_H
+#define _BITS_IOCTL_TYPES_H 1
 
 
 #if	defined(TIOCGETC) || defined(TIOCSETC)
@@ -114,4 +118,4 @@ struct ttysize
 #endif
 
 
-#endif /* ioctl-types.h */
+#endif /* bits/ioctl-types.h */
diff --git a/sysdeps/generic/mathbits.h b/sysdeps/generic/bits/mathdef.h
index b14b52d901..93b60bd25f 100644
--- a/sysdeps/generic/mathbits.h
+++ b/sysdeps/generic/bits/mathdef.h
@@ -16,8 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _MATHBITS_H
-#define _MATHBITS_H	1
+#ifndef _MATH_H
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+#endif
+
 
 /* Normally, there is no long double type and the `float' and `double'
    expressions are evaluated as `double'.  */
@@ -36,5 +38,3 @@ typedef double double_t;	/* `double' expressions are evaluated as
 /* The values returned by `ilogb' for 0 and NaN respectively.  */
 #define FP_ILOGB0	0x80000001
 #define FP_ILOGBNAN	0x7fffffff
-
-#endif /* mathbits.h */
diff --git a/sysdeps/generic/resourcebits.h b/sysdeps/generic/bits/resource.h
index 2c35c12a47..2c35c12a47 100644
--- a/sysdeps/generic/resourcebits.h
+++ b/sysdeps/generic/bits/resource.h
diff --git a/sysdeps/generic/bits/sched.h b/sysdeps/generic/bits/sched.h
new file mode 100644
index 0000000000..bb5da5676f
--- /dev/null
+++ b/sysdeps/generic/bits/sched.h
@@ -0,0 +1,35 @@
+/* Definitions of constants and data structure for POSIX 1003.1b-1993
+   scheduling interface.
+   Copyright (C) 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, write to the Free Software Foundation, Inc., 59 Temple Place
+   Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _SCHED_H
+#error "Never use <bits/sched.h> directly; include <sched.h> instead."
+#endif
+
+
+/* Scheduling algorithms.  */
+#define SCHED_OTHER	0
+#define SCHED_FIFO	1
+#define SCHED_RR	2
+
+/* Data structure to describe a process' schedulability.  */
+struct sched_param
+{
+  int sched_priority;
+};
diff --git a/sysdeps/generic/selectbits.h b/sysdeps/generic/bits/select.h
index e2bdf6049e..613919577c 100644
--- a/sysdeps/generic/selectbits.h
+++ b/sysdeps/generic/bits/select.h
@@ -16,8 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SELECTBITS_H
-#define _SELECTBITS_H	1
+#ifndef _SYS_SELECT_H
+#error "Never use <bits/select.h> directly; include <sys/select.h> instead."
+#endif
+
 
 /* This line MUST be split!  Otherwise m4 will not change it.  */
 #define __FD_ZERO(set)  \
@@ -25,5 +27,3 @@
 #define __FD_SET(d, set)	((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
 #define __FD_CLR(d, set)	((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
 #define __FD_ISSET(d, set)	((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
-
-#endif /* selectbits.h */
diff --git a/sysdeps/generic/sigaction.h b/sysdeps/generic/bits/sigaction.h
index 1676b1ce8e..1676b1ce8e 100644
--- a/sysdeps/generic/sigaction.h
+++ b/sysdeps/generic/bits/sigaction.h
diff --git a/sysdeps/generic/sigset.h b/sysdeps/generic/bits/sigset.h
index 9fad4538d7..9fad4538d7 100644
--- a/sysdeps/generic/sigset.h
+++ b/sysdeps/generic/bits/sigset.h
diff --git a/sysdeps/generic/sockaddrcom.h b/sysdeps/generic/bits/sockaddr.h
index 8b1de11c15..73a0e26ec4 100644
--- a/sysdeps/generic/sockaddrcom.h
+++ b/sysdeps/generic/bits/sockaddr.h
@@ -17,8 +17,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SOCKADDRCOM_H
-#define _SOCKADDRCOM_H	1
+/*
+ * Never include this file directly; use <sys/socket.h> instead.
+ */
+
+#ifndef _BITS_SOCKADDR_H
+#define _BITS_SOCKADDR_H	1
 
 
 /* POSIX.1g specifies this type name for the `sa_family' member.  */
@@ -34,4 +38,4 @@ typedef unsigned short int sa_family_t;
 #define __SOCKADDR_COMMON_SIZE	(sizeof (unsigned short int))
 
 
-#endif	/* sockaddrcom.h */
+#endif	/* bits/sockaddr.h */
diff --git a/sysdeps/generic/socketbits.h b/sysdeps/generic/bits/socket.h
index 5d85a8e079..d12d96cc14 100644
--- a/sysdeps/generic/socketbits.h
+++ b/sysdeps/generic/bits/socket.h
@@ -17,9 +17,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef	_SOCKETBITS_H
+#ifndef _SYS_SOCKET_H
+#error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
+#endif
+
 
-#define	_SOCKETBITS_H	1
 #include <features.h>
 
 __BEGIN_DECLS
@@ -114,7 +116,7 @@ enum __socket_type
 
 
 /* Get the definition of the macro to define the common sockaddr members.  */
-#include <sockaddrcom.h>
+#include <bits/sockaddr.h>
 
 /* Structure describing a generic socket address.  */
 struct sockaddr
@@ -196,5 +198,3 @@ struct linger
   };
 
 __END_DECLS
-
-#endif /* socketbits.h */
diff --git a/sysdeps/generic/bits/statfs.h b/sysdeps/generic/bits/statfs.h
new file mode 100644
index 0000000000..10bc0728b2
--- /dev/null
+++ b/sysdeps/generic/bits/statfs.h
@@ -0,0 +1,52 @@
+/* Definition of `struct statfs', information about a filesystem.
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <sys/statfs.h> instead.
+ */
+
+#ifndef	_BITS_STATFS_H
+#define	_BITS_STATFS_H	1
+
+#include <bits/types.h>
+
+/* GNU Hurd NOTE: The size of this structure (16 ints) is known in
+   <hurd/hurd_types.defs>, since it is used in the `file_statfs' RPC.  MiG
+   does not cope at all well with the passed C structure not being of the
+   expected size.  There are some filler words at the end to allow for
+   future expansion.  To increase the size of the structure used in the RPC
+   and retain binary compatibility, we would need to assign a new message
+   number.  */
+
+struct statfs
+  {
+    unsigned int f_type;
+    unsigned int f_bsize;
+    unsigned int f_blocks;
+    unsigned int f_bfree;
+    unsigned int f_bavail;
+    unsigned int f_files;
+    unsigned int f_ffree;
+    __fsid_t f_fsid;
+    unsigned int f_namelen;
+    unsigned int f_spare[6];
+  };
+
+
+#endif /* bits/statfs.h */
diff --git a/sysdeps/generic/termbits.h b/sysdeps/generic/bits/termios.h
index adf0ee2f75..9a6aed2bba 100644
--- a/sysdeps/generic/termbits.h
+++ b/sysdeps/generic/bits/termios.h
@@ -17,8 +17,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/* These macros are also defined in some ioctls.h files (with numerically
-   identical values), but this serves to shut up cpp's complaining. */
+/* These macros are also defined in some <bits/ioctls.h> files (with
+   numerically identical values), but this serves to shut up cpp's
+   complaining. */
 #ifdef __USE_BSD
 
 #ifdef MDMBUF
diff --git a/sysdeps/generic/gnu/types.h b/sysdeps/generic/bits/types.h
index 85f17a4fb1..c264adc917 100644
--- a/sysdeps/generic/gnu/types.h
+++ b/sysdeps/generic/bits/types.h
@@ -16,9 +16,12 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef	_GNU_TYPES_H
+/*
+ * Never include this file directly; use <sys/types.h> instead.
+ */
 
-#define	_GNU_TYPES_H	1
+#ifndef	_BITS_TYPES_H
+#define	_BITS_TYPES_H	1
 
 
 /* Convenience types.  */
@@ -39,6 +42,16 @@ typedef struct
   __u_long __val[2];
 } __u_quad_t;
 #endif
+typedef signed char __int8_t;
+typedef unsigned char __uint8_t;
+typedef signed short int __int16_t;
+typedef unsigned short int __uint16_t;
+typedef signed int __int32_t;
+typedef unsigned int __uint32_t;
+#ifdef __GNUC__
+typedef signed long long int __int64_t;
+typedef unsigned long long int __uint64_t;
+#endif
 typedef __quad_t *__qaddr_t;
 typedef int __dev_t;		/* Type of device numbers.  */
 typedef unsigned int __uid_t;	/* Type of user identifications.  */
@@ -78,4 +91,4 @@ typedef struct
 
 typedef unsigned long int __fd_mask;
 
-#endif /* gnu/types.h */
+#endif /* bits/types.h */
diff --git a/sysdeps/generic/bits/uio.h b/sysdeps/generic/bits/uio.h
new file mode 100644
index 0000000000..1a12697008
--- /dev/null
+++ b/sysdeps/generic/bits/uio.h
@@ -0,0 +1,32 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_UIO_H
+#error "Never use <bits/uio.h> directly; include <sys/uio.h> instead."
+#endif
+
+
+/* `struct iovec' -- Structure describing a section of memory.  */
+
+struct iovec
+{
+  /* Starting address.  */
+  __ptr_t iov_base;
+  /* Length in bytes.  */
+  size_t iov_len;
+};
diff --git a/sysdeps/generic/ustatbits.h b/sysdeps/generic/bits/ustat.h
index aa5d493e63..aa5d493e63 100644
--- a/sysdeps/generic/ustatbits.h
+++ b/sysdeps/generic/bits/ustat.h
diff --git a/sysdeps/generic/utmpbits.h b/sysdeps/generic/bits/utmp.h
index cbd3457bd4..b8decb0598 100644
--- a/sysdeps/generic/utmpbits.h
+++ b/sysdeps/generic/bits/utmp.h
@@ -1,5 +1,5 @@
 /* The `struct utmp' type, describing entries in the utmp file.  Generic/BSDish
-   Copyright (C) 1993, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1993, 1996, 1997 Free Software Foundation, Inc.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -16,9 +16,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _UTMPBITS_H
+#ifndef _UTMP_H
+#error "Never use <bits/utmp.h> directly; include <utmp.h> instead."
+#endif
+
 
-#define _UTMPBITS_H	1
 #include <features.h>
 
 #include <paths.h>
@@ -49,5 +51,3 @@ struct utmp {
 
 
 __END_DECLS
-
-#endif /* utmpbits.h */
diff --git a/sysdeps/generic/utsnamelen.h b/sysdeps/generic/bits/utsname.h
index 5594bcc4da..5594bcc4da 100644
--- a/sysdeps/generic/utsnamelen.h
+++ b/sysdeps/generic/bits/utsname.h
diff --git a/sysdeps/generic/waitstatus.h b/sysdeps/generic/bits/waitstatus.h
index 4fbcbe87aa..8e97f2702c 100644
--- a/sysdeps/generic/waitstatus.h
+++ b/sysdeps/generic/bits/waitstatus.h
@@ -1,5 +1,5 @@
 /* Definitions of status bits for `wait' et al.
-   Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1994, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,10 +17,13 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef _SYS_WAIT_H
+#error "Never use <bits/waitstatus.h> directly; include <sys/wait.h> instead."
+#endif
+
+
 /* Everything extant so far uses these same bits.  */
 
-#ifndef	_WAITSTATUS_H
-#define	_WAITSTATUS_H
 
 /* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
 #define	__WEXITSTATUS(status)	(((status) & 0xff00) >> 8)
@@ -99,6 +102,3 @@ union wait
 #define	w_stopval	__wait_stopped.__w_stopval
 
 #endif	/* Use BSD.  */
-
-
-#endif	/* waitstatus.h */
diff --git a/sysdeps/generic/iovec.h b/sysdeps/generic/iovec.h
deleted file mode 100644
index 307fc6a18a..0000000000
--- a/sysdeps/generic/iovec.h
+++ /dev/null
@@ -1,9 +0,0 @@
-/* `struct iovec' -- Structure describing a section of memory.  */
-
-struct iovec
-{
-  /* Starting address.  */
-  __ptr_t iov_base;
-  /* Length in bytes.  */
-  size_t iov_len;
-};
diff --git a/sysdeps/generic/netinet/ip.h b/sysdeps/generic/netinet/ip.h
index a119c629f7..84615a5714 100644
--- a/sysdeps/generic/netinet/ip.h
+++ b/sysdeps/generic/netinet/ip.h
@@ -36,7 +36,7 @@
 #ifndef _NETINET_IP_H
 #define _NETINET_IP_H
 
-#include <gnu/types.h>
+#include <bits/types.h>
 #include <endian.h>
 #include <netinet/in.h>
 
diff --git a/sysdeps/generic/schedbits.h b/sysdeps/generic/schedbits.h
deleted file mode 100644
index e2cb00e842..0000000000
--- a/sysdeps/generic/schedbits.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Definitions of constants and data structure for POSIX 1003.1b-1993
-   scheduling interface.
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
-
-#ifndef	_SCHEDBITS_H
-#define	_SCHEDBITS_H	1
-
-/* Scheduling algorithms.  */
-#define SCHED_OTHER	0
-#define SCHED_FIFO	1
-#define SCHED_RR	2
-
-/* Data structure to describe a process' schedulability.  */
-struct sched_param
-{
-  int sched_priority;
-};
-
-#endif /* schedbits.h */
diff --git a/sysdeps/generic/setenv.c b/sysdeps/generic/setenv.c
index 11b5906a9d..e740fa9eef 100644
--- a/sysdeps/generic/setenv.c
+++ b/sysdeps/generic/setenv.c
@@ -47,7 +47,7 @@ extern char **environ;
 
 #if _LIBC
 /* This lock protects against simultaneous modifications of `environ'.  */
-# include <libc-lock.h>
+# include <bits/libc-lock.h>
 __libc_lock_define_initialized (static, envlock)
 # define LOCK	__libc_lock_lock (envlock)
 # define UNLOCK	__libc_lock_unlock (envlock)
diff --git a/sysdeps/generic/statfsbuf.h b/sysdeps/generic/statfsbuf.h
deleted file mode 100644
index e5c2dd7f77..0000000000
--- a/sysdeps/generic/statfsbuf.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* Definition of `struct statfs', information about a filesystem.
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
-
-#ifndef	_STATFSBUF_H
-
-#define	_STATFSBUF_H	1
-
-#include <gnu/types.h>
-
-/* GNU Hurd NOTE: The size of this structure (16 ints) is known in
-   <hurd/hurd_types.defs>, since it is used in the `file_statfs' RPC.  MiG
-   does not cope at all well with the passed C structure not being of the
-   expected size.  There are some filler words at the end to allow for
-   future expansion.  To increase the size of the structure used in the RPC
-   and retain binary compatibility, we would need to assign a new message
-   number.  */
-
-struct statfs
-  {
-    unsigned int f_type;
-    unsigned int f_bsize;
-    unsigned int f_blocks;
-    unsigned int f_bfree;
-    unsigned int f_bavail;
-    unsigned int f_files;
-    unsigned int f_ffree;
-    __fsid_t f_fsid;
-    unsigned int f_namelen;
-    unsigned int f_spare[6];
-  };
-
-
-#endif /* statfsbuf.h */
diff --git a/sysdeps/generic/sys/mman.h b/sysdeps/generic/sys/mman.h
index 32b152e124..9c2a1b62ce 100644
--- a/sysdeps/generic/sys/mman.h
+++ b/sysdeps/generic/sys/mman.h
@@ -26,7 +26,7 @@
 #define	_SYS_MMAN_H	1
 #include <features.h>
 
-#include <gnu/types.h>
+#include <bits/types.h>
 #define __need_size_t
 #include <stddef.h>