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-rw-r--r--sysdeps/unix/sysv/linux/bits/dirent.h7
-rw-r--r--sysdeps/unix/sysv/linux/bits/in.h7
-rw-r--r--sysdeps/unix/sysv/linux/bits/ioctl-types.h12
-rw-r--r--sysdeps/unix/sysv/linux/bits/ioctls.h13
-rw-r--r--sysdeps/unix/sysv/linux/bits/ipc.h20
-rw-r--r--sysdeps/unix/sysv/linux/bits/msq.h34
-rw-r--r--sysdeps/unix/sysv/linux/bits/poll.h3
-rw-r--r--sysdeps/unix/sysv/linux/bits/resource.h7
-rw-r--r--sysdeps/unix/sysv/linux/bits/sched.h22
-rw-r--r--sysdeps/unix/sysv/linux/bits/sem.h18
-rw-r--r--sysdeps/unix/sysv/linux/bits/shm.h78
-rw-r--r--sysdeps/unix/sysv/linux/bits/sigaction.h4
-rw-r--r--sysdeps/unix/sysv/linux/bits/sigcontext.h4
-rw-r--r--sysdeps/unix/sysv/linux/bits/socket.h9
-rw-r--r--sysdeps/unix/sysv/linux/bits/stat.h11
-rw-r--r--sysdeps/unix/sysv/linux/bits/statfs.h11
-rw-r--r--sysdeps/unix/sysv/linux/bits/termios.h12
-rw-r--r--sysdeps/unix/sysv/linux/bits/time.h44
-rw-r--r--sysdeps/unix/sysv/linux/bits/uio.h2
-rw-r--r--sysdeps/unix/sysv/linux/bits/utsname.h6
-rw-r--r--sysdeps/unix/sysv/linux/bits/waitflags.h2
21 files changed, 141 insertions, 185 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/dirent.h b/sysdeps/unix/sysv/linux/bits/dirent.h
index 1f8ff1e3d0..30e0203289 100644
--- a/sysdeps/unix/sysv/linux/bits/dirent.h
+++ b/sysdeps/unix/sysv/linux/bits/dirent.h
@@ -16,8 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _BITS_DIRENT_H
-#define _BITS_DIRENT_H	1
+#ifndef _DIRENT_H
+# error "Never use <bits/dirent.h> directly; include <dirent.h> instead."
+#endif
 
 struct dirent
   {
@@ -50,5 +51,3 @@ struct dirent64
 #define _DIRENT_HAVE_D_RECLEN
 #define _DIRENT_HAVE_D_OFF
 #define _DIRENT_HAVE_D_TYPE
-
-#endif /* bits/dirent.h */
diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
index 0dd94bef96..1d3817f68d 100644
--- a/sysdeps/unix/sysv/linux/bits/in.h
+++ b/sysdeps/unix/sysv/linux/bits/in.h
@@ -18,8 +18,9 @@
 
 /* Linux version.  */
 
-#ifndef _NETINET_INBITS_H
-#define _NETINET_INBITS_H 1
+#ifndef _NETINET_IN_H
+# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
+#endif
 
 /* Options for use with `getsockopt' and `setsockopt' at the IP level.
    The first word in the comment at the right is the data type used;
@@ -71,5 +72,3 @@ struct ip_mreq
 #define IPV6_MULTICAST_LOOP	19
 #define IPV6_ADD_MEMBERSHIP	20
 #define IPV6_DROP_MEMBERSHIP	21
-
-#endif	/* netinet/inbits.h */
diff --git a/sysdeps/unix/sysv/linux/bits/ioctl-types.h b/sysdeps/unix/sysv/linux/bits/ioctl-types.h
index af988a3c9d..4413dacdb4 100644
--- a/sysdeps/unix/sysv/linux/bits/ioctl-types.h
+++ b/sysdeps/unix/sysv/linux/bits/ioctl-types.h
@@ -17,12 +17,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/*
- * Never include this file directly; use <sys/ioctl.h> instead.
- */
-
-#ifndef _BITS_IOCTL_TYPES_H
-#define _BITS_IOCTL_TYPES_H 1
+#ifndef _SYS_IOCTL_H
+# error "Never use <bits/ioctl-types.h> directly; include <sys/ioctl.h> instead."
+#endif
 
 /* Get definition of constants for use with `ioctl'.  */
 #include <asm/ioctls.h>
@@ -69,6 +66,3 @@ struct termio
 #define N_PPP		3
 #define N_STRIP		4
 #define N_AX25		5
-
-
-#endif /* bits/ioctl-types.h */
diff --git a/sysdeps/unix/sysv/linux/bits/ioctls.h b/sysdeps/unix/sysv/linux/bits/ioctls.h
index 265c857f92..a89724cd71 100644
--- a/sysdeps/unix/sysv/linux/bits/ioctls.h
+++ b/sysdeps/unix/sysv/linux/bits/ioctls.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* 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
@@ -16,15 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/*
- * Never include this file directly; use <sys/ioctl.h> instead.
- */
-
-#ifndef _BITS_IOCTLS_H
-#define _BITS_IOCTLS_H 1
+#ifndef _SYS_IOCTL_H
+# error "Never use <bits/ioctls.h> directly; include <sys/ioctl.h> instead."
+#endif
 
 /* Use the definitions from the kernel header files.  */
 #include <asm/ioctls.h>
 #include <linux/sockios.h>
-
-#endif /* bits/ioctls.h  */
diff --git a/sysdeps/unix/sysv/linux/bits/ipc.h b/sysdeps/unix/sysv/linux/bits/ipc.h
index c01a81a83f..8b5db4add6 100644
--- a/sysdeps/unix/sysv/linux/bits/ipc.h
+++ b/sysdeps/unix/sysv/linux/bits/ipc.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
    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
@@ -17,10 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_IPC_BUF_H
-
-#define _SYS_IPC_BUF_H	1
-#include <features.h>
+#ifndef _SYS_IPC_H
+# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
+#endif
 
 #include <sys/types.h>
 
@@ -35,9 +33,6 @@
 #define IPC_STAT	2		/* Get `ipc_perm' options.  */
 #define IPC_INFO	3		/* See ipcs.  */
 
-
-__BEGIN_DECLS
-
 /* Special key values.  */
 #define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
 
@@ -63,10 +58,15 @@ struct ipc_kludge
     long int msgtyp;
   };
 
+
+__BEGIN_DECLS
+
 /* The actual system call: all functions are multiplexed by this.  */
 extern int __ipc __P ((int __call, int __first, int __second, int __third,
 		       void *__ptr));
 
+__END_DECLS
+
 /* The codes for the functions to use the multiplexer `__ipc'.  */
 #define IPCOP_semop	 1
 #define IPCOP_semget	 2
@@ -79,7 +79,3 @@ extern int __ipc __P ((int __call, int __first, int __second, int __third,
 #define IPCOP_shmdt	22
 #define IPCOP_shmget	23
 #define IPCOP_shmctl	24
-
-__END_DECLS
-
-#endif /* bits/ipc_buf.h */
diff --git a/sysdeps/unix/sysv/linux/bits/msq.h b/sysdeps/unix/sysv/linux/bits/msq.h
index 59559a31c3..9d0b9a9afa 100644
--- a/sysdeps/unix/sysv/linux/bits/msq.h
+++ b/sysdeps/unix/sysv/linux/bits/msq.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
    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
@@ -17,10 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_MSQ_BUF_H
-
-#define _SYS_MSQ_BUF_H	1
-#include <features.h>
+#ifndef _SYS_MSG_H
+#error "Never use <bits/msq.h> directly; include <sys/msg.h> instead."
+#endif
 
 #include <sys/types.h>
 
@@ -29,8 +27,6 @@
 #define MSG_EXCEPT	020000	/* recv any msg except of specified type */
 
 
-__BEGIN_DECLS
-
 /* Structure of record for one message inside the kernel.
    The type `struct __msg' is opaque.  */
 struct msqid_ds
@@ -60,19 +56,15 @@ struct msqid_ds
 
 /* buffer for msgctl calls IPC_INFO, MSG_INFO */
 struct msginfo
-{
-  int msgpool;
-  int msgmap;
-  int msgmax;
-  int msgmnb;
-  int msgmni;
-  int msgssz;
-  int msgtql;
-  ushort  msgseg;
-};
+  {
+    int msgpool;
+    int msgmap;
+    int msgmax;
+    int msgmnb;
+    int msgmni;
+    int msgssz;
+    int msgtql;
+    ushort  msgseg;
+  };
 
 #endif /* __USE_MISC */
-
-__END_DECLS
-
-#endif /* bits/msq_buf.h */
diff --git a/sysdeps/unix/sysv/linux/bits/poll.h b/sysdeps/unix/sysv/linux/bits/poll.h
index c6b1d2324a..4aec021fed 100644
--- a/sysdeps/unix/sysv/linux/bits/poll.h
+++ b/sysdeps/unix/sysv/linux/bits/poll.h
@@ -16,6 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef _SYS_POLL_H
+# error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
+#endif
 
 /* Event types that can be polled for.  These bits may be set in `events'
    to indicate the interesting event types; they will appear in `revents'
diff --git a/sysdeps/unix/sysv/linux/bits/resource.h b/sysdeps/unix/sysv/linux/bits/resource.h
index 9ee6ea5b27..f825cba929 100644
--- a/sysdeps/unix/sysv/linux/bits/resource.h
+++ b/sysdeps/unix/sysv/linux/bits/resource.h
@@ -17,6 +17,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef _SYS_RESOURCE_H
+# error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
+#endif
+
 #include <asm/resource.h>
 #include <bits/types.h>
 
@@ -148,7 +152,8 @@ enum __rusage_who
 #define RUSAGE_BOTH RUSAGE_BOTH
 };
 
-#include <sys/time.h>		/* For `struct timeval'.  */
+#define __need_timeval
+#include <bits/time.h>		/* For `struct timeval'.  */
 
 /* Structure which says how much of each resource has been used.  */
 struct rusage
diff --git a/sysdeps/unix/sysv/linux/bits/sched.h b/sysdeps/unix/sysv/linux/bits/sched.h
index 521bbb7177..0ac5409172 100644
--- a/sysdeps/unix/sysv/linux/bits/sched.h
+++ b/sysdeps/unix/sysv/linux/bits/sched.h
@@ -19,12 +19,10 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _SCHED_H
-#error "Never use <bits/sched.h> directly; include <sched.h> instead."
+# error "Never include <bits/sched.h> directly; use <sched.h> instead."
 #endif
 
 
-#include <features.h>
-
 /* Scheduling algorithms.  */
 #define SCHED_OTHER	0
 #define SCHED_FIFO	1
@@ -36,15 +34,19 @@ struct sched_param
     int sched_priority;
   };
 
+#ifdef __USE_MISC
 /* Cloning flags.  */
-#define	CSIGNAL	      0x000000ff  /* Signal mask to be sent at exit.  */
-#define	CLONE_VM      0x00000100  /* Set if VM shared between processes.  */
-#define	CLONE_FS      0x00000200  /* Set if fs info shared between processes.*/
-#define CLONE_FILES   0x00000400  /* Set if open files shared between processes*/
-#define CLONE_SIGHAND 0x00000800  /* Set if signal handlers shared.  */
-#define CLONE_PID     0x00001000  /* Set if pid shared.  */
+# define CSIGNAL       0x000000ff /* Signal mask to be sent at exit.  */
+# define CLONE_VM      0x00000100 /* Set if VM shared between processes.  */
+# define CLONE_FS      0x00000200 /* Set if fs info shared between processes.*/
+# define CLONE_FILES   0x00000400 /* Set if open files shared between processes*/
+# define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared.  */
+# define CLONE_PID     0x00001000 /* Set if pid shared.  */
+#endif
 
 
+__BEGIN_DECLS
+
 /* Clone current process.  */
 extern int __clone __P ((int (*__fn) (void *__arg), void *__child_stack,
 			 int __flags, void *__arg));
@@ -52,3 +54,5 @@ extern int __clone __P ((int (*__fn) (void *__arg), void *__child_stack,
 extern int clone __P ((int (*__fn) (void *__arg), void *__child_stack,
 		       int __flags, void *__arg));
 #endif
+
+__END_DECLS
diff --git a/sysdeps/unix/sysv/linux/bits/sem.h b/sysdeps/unix/sysv/linux/bits/sem.h
index 87951efea1..f3bbd89a12 100644
--- a/sysdeps/unix/sysv/linux/bits/sem.h
+++ b/sysdeps/unix/sysv/linux/bits/sem.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
    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
@@ -17,10 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_SEM_BUF_H
-
-#define _SYS_SEM_BUF_H	1
-#include <features.h>
+#ifndef _SYS_SEM_H
+# error "Never include <bits/sem.h> directly; use <sys/sem.h> instead."
+#endif
 
 #include <sys/types.h>
 
@@ -37,8 +35,6 @@
 #define SETALL		17		/* set all semval's */
 
 
-__BEGIN_DECLS
-
 /* Data structure describing a set of semaphores.  */
 struct semid_ds
 {
@@ -64,8 +60,8 @@ union semun
 #ifdef __USE_MISC
 
 /* ipcs ctl cmds */
-#define SEM_STAT 18
-#define SEM_INFO 19
+# define SEM_STAT 18
+# define SEM_INFO 19
 
 struct  seminfo
 {
@@ -82,7 +78,3 @@ struct  seminfo
 };
 
 #endif /* __USE_MISC */
-
-__END_DECLS
-
-#endif /* bits/sem_buf.h */
diff --git a/sysdeps/unix/sysv/linux/bits/shm.h b/sysdeps/unix/sysv/linux/bits/shm.h
index 6db01dd4a2..6f5f840909 100644
--- a/sysdeps/unix/sysv/linux/bits/shm.h
+++ b/sysdeps/unix/sysv/linux/bits/shm.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
    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
@@ -17,10 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_SHM_BUF_H
-
-#define _SYS_SHM_BUF_H	1
-#include <features.h>
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
 
 #include <sys/types.h>
 
@@ -38,55 +36,49 @@
 #define SHM_UNLOCK	12		/* unlock segment (root only) */
 
 
-__BEGIN_DECLS
-
 /* Data structure describing a set of semaphores.  */
 struct shmid_ds
-{
-  struct ipc_perm shm_perm;		/* operation permission struct */
-  int shm_segsz;			/* size of segment in bytes */
-  __time_t shm_atime;			/* time of last shmat() */
-  __time_t shm_dtime;			/* time of last shmdt() */
-  __time_t shm_ctime;			/* time of last change by shmctl() */
-  int shm_cpid;				/* pid of creator */
-  int shm_lpid;				/* pid of last shmop */
-  unsigned short int shm_nattch;	/* number of current attaches */
-  unsigned short int __shm_npages;	/* size of segment (pages) */
-  unsigned long int *__shm_pages;	/* array of ptrs to frames -> SHMMAX */
-  struct vm_area_struct *__attaches;	/* descriptors for attaches */
-};
+  {
+    struct ipc_perm shm_perm;		/* operation permission struct */
+    int shm_segsz;			/* size of segment in bytes */
+    __time_t shm_atime;			/* time of last shmat() */
+    __time_t shm_dtime;			/* time of last shmdt() */
+    __time_t shm_ctime;			/* time of last change by shmctl() */
+    int shm_cpid;			/* pid of creator */
+    int shm_lpid;			/* pid of last shmop */
+    unsigned short int shm_nattch;	/* number of current attaches */
+    unsigned short int __shm_npages;	/* size of segment (pages) */
+    unsigned long int *__shm_pages;	/* array of ptrs to frames -> SHMMAX */
+    struct vm_area_struct *__attaches;	/* descriptors for attaches */
+  };
 
 #ifdef __USE_MISC
 
 /* ipcs ctl commands */
-#define SHM_STAT 	13
-#define SHM_INFO 	14
+# define SHM_STAT 	13
+# define SHM_INFO 	14
 
 /* shm_mode upper byte flags */
-#define	SHM_DEST	01000	/* segment will be destroyed on last detach */
-#define SHM_LOCKED      02000   /* segment will not be swapped */
+# define SHM_DEST	01000	/* segment will be destroyed on last detach */
+# define SHM_LOCKED	02000   /* segment will not be swapped */
 
 struct	shminfo
-{
-  int shmmax;
-  int shmmin;
-  int shmmni;
-  int shmseg;
-  int shmall;
-};
+  {
+    int shmmax;
+    int shmmin;
+    int shmmni;
+    int shmseg;
+    int shmall;
+  };
 
 struct shm_info
-{
-  int   used_ids;
-  ulong shm_tot;	/* total allocated shm */
-  ulong shm_rss;	/* total resident shm */
-  ulong shm_swp;	/* total swapped shm */
-  ulong swap_attempts;
-  ulong swap_successes;
-};
+  {
+    int   used_ids;
+    ulong shm_tot;	/* total allocated shm */
+    ulong shm_rss;	/* total resident shm */
+    ulong shm_swp;	/* total swapped shm */
+    ulong swap_attempts;
+    ulong swap_successes;
+  };
 
 #endif /* __USE_MISC */
-
-__END_DECLS
-
-#endif /* bits/shm_buf.h */
diff --git a/sysdeps/unix/sysv/linux/bits/sigaction.h b/sysdeps/unix/sysv/linux/bits/sigaction.h
index 247b53499e..1806bb2e92 100644
--- a/sysdeps/unix/sysv/linux/bits/sigaction.h
+++ b/sysdeps/unix/sysv/linux/bits/sigaction.h
@@ -17,6 +17,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef _SIGNAL_H
+# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
+#endif
+
 /* Structure describing the action to be taken when a signal arrives.  */
 struct sigaction
   {
diff --git a/sysdeps/unix/sysv/linux/bits/sigcontext.h b/sysdeps/unix/sysv/linux/bits/sigcontext.h
index fb8bc5fc57..08960b6824 100644
--- a/sysdeps/unix/sysv/linux/bits/sigcontext.h
+++ b/sysdeps/unix/sysv/linux/bits/sigcontext.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* 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
@@ -17,7 +17,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _SIGNAL_H
-#error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
+# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
 #endif
 
 
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index 8f859d2e3e..f48f2d1403 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -18,20 +18,15 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _SYS_SOCKET_H
-#error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
+# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
 #endif
 
-
-#include <features.h>
-
 #define	__need_size_t
 #define __need_NULL
 #include <stddef.h>
 
 #include <sys/types.h>
 
-__BEGIN_DECLS
-
 /* Type for length arguments in socket calls.  */
 typedef unsigned int socklen_t;
 
@@ -216,5 +211,3 @@ struct linger
     int l_onoff;		/* Nonzero to linger on close.  */
     int l_linger;		/* Time to linger.  */
   };
-
-__END_DECLS
diff --git a/sysdeps/unix/sysv/linux/bits/stat.h b/sysdeps/unix/sysv/linux/bits/stat.h
index 1b98448ff4..18432fd09e 100644
--- a/sysdeps/unix/sysv/linux/bits/stat.h
+++ b/sysdeps/unix/sysv/linux/bits/stat.h
@@ -16,12 +16,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/*
- * Never include this file directly; use <sys/stat.h> instead.
- */
-
-#ifndef	_BITS_STAT_H
-#define	_BITS_STAT_H	1
+#ifndef _SYS_STAT_H
+# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
+#endif
 
 /* Versions of the `struct stat' data structure.  */
 #define _STAT_VER_LINUX_OLD	1
@@ -126,5 +123,3 @@ struct stat64
 #define	__S_IREAD	0400	/* Read by owner.  */
 #define	__S_IWRITE	0200	/* Write by owner.  */
 #define	__S_IEXEC	0100	/* Execute by owner.  */
-
-#endif	/* bits/stat.h */
diff --git a/sysdeps/unix/sysv/linux/bits/statfs.h b/sysdeps/unix/sysv/linux/bits/statfs.h
index c79c80e84c..a56ed79e7c 100644
--- a/sysdeps/unix/sysv/linux/bits/statfs.h
+++ b/sysdeps/unix/sysv/linux/bits/statfs.h
@@ -16,12 +16,9 @@
    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
+#ifndef _SYS_STATFS_H
+# error "Never include <bits/statfs.h> directly; use <sys/statfs.h> instead."
+#endif
 
 #include <bits/types.h>  /* for __fsid_t and __fsblkcnt_t*/
 
@@ -62,5 +59,3 @@ struct statfs64
     int f_spare[6];
   };
 #endif
-
-#endif	/* bits/statfs.h */
diff --git a/sysdeps/unix/sysv/linux/bits/termios.h b/sysdeps/unix/sysv/linux/bits/termios.h
index dd42012374..926c3f32f4 100644
--- a/sysdeps/unix/sysv/linux/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/bits/termios.h
@@ -17,13 +17,9 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-/*
- * Never include this file directly; use <termios.h> instead.
- */
-
-
-#ifndef _BITS_TERMIOS_H
-#define _BITS_TERMIOS_H	1
+#ifndef _TERMIOS_H
+# error "Never include <bits/termios.h> directly; use <termios.h> instead."
+#endif
 
 typedef unsigned char	cc_t;
 typedef unsigned int	speed_t;
@@ -185,5 +181,3 @@ struct termios
 
 #define _IOT_termios /* Hurd ioctl type field.  */ \
   _IOT (_IOTS (cflag_t), 4, _IOTS (cc_t), NCCS, _IOTS (speed_t), 2)
-
-#endif /* bits/termios.h */
diff --git a/sysdeps/unix/sysv/linux/bits/time.h b/sysdeps/unix/sysv/linux/bits/time.h
index 509cb2ce32..3c1b27a1bb 100644
--- a/sysdeps/unix/sysv/linux/bits/time.h
+++ b/sysdeps/unix/sysv/linux/bits/time.h
@@ -21,23 +21,9 @@
  * Never include this file directly; use <time.h> instead.
  */
 
-#ifdef __need_timeval
-# undef __need_timeval
-# ifndef _STRUCT_TIMEVAL
-#  define _STRUCT_TIMEVAL	1
-/* A time value that is accurate to the nearest
-   microsecond but also has a range of years.  */
-struct timeval
-  {
-    time_t tv_sec;		/* Seconds.  */
-    time_t tv_usec;		/* Microseconds.  */
-  };
-# endif	/* struct timeval */
-#endif	/* need timeval */
-
-
-#ifndef _BITS_TIME_H
-#define _BITS_TIME_H	1
+#ifndef __need_timeval
+# ifndef _BITS_TIME_H
+#  define _BITS_TIME_H	1
 
 /* ISO/IEC 9899:1990 7.12.1: <time.h>
    The macro `CLOCKS_PER_SEC' is the number per second of the value
@@ -45,12 +31,26 @@ struct timeval
 /* CAE XSH, Issue 4, Version 2: <time.h>
    The value of CLOCKS_PER_SEC is required to be 1 million on all
    XSI-conformant systems. */
-# define CLOCKS_PER_SEC  1000000
+#  define CLOCKS_PER_SEC  1000000
 
-# ifndef __STRICT_ANSI__
+#  ifndef __STRICT_ANSI__
 /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
    presents the real value for clock ticks per second for the system.  */
-#  define CLK_TCK 100
-# endif
+#   define CLK_TCK 100
+#  endif
 
-#endif	/* bits/time.h */
+# endif	/* bits/time.h */
+#endif
+
+#ifndef _STRUCT_TIMEVAL
+# define _STRUCT_TIMEVAL	1
+# include <bits/types.h>
+
+/* A time value that is accurate to the nearest
+   microsecond but also has a range of years.  */
+struct timeval
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __time_t tv_usec;		/* Microseconds.  */
+  };
+#endif	/* struct timeval */
diff --git a/sysdeps/unix/sysv/linux/bits/uio.h b/sysdeps/unix/sysv/linux/bits/uio.h
index 3f1dc01c73..38ac17baa9 100644
--- a/sysdeps/unix/sysv/linux/bits/uio.h
+++ b/sysdeps/unix/sysv/linux/bits/uio.h
@@ -17,7 +17,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _SYS_UIO_H
-#error "Never use <bits/uio.h> directly; include <sys/uio.h> instead."
+# error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
 #endif
 
 
diff --git a/sysdeps/unix/sysv/linux/bits/utsname.h b/sysdeps/unix/sysv/linux/bits/utsname.h
index 64e2ab5bbc..8f4bf16f5a 100644
--- a/sysdeps/unix/sysv/linux/bits/utsname.h
+++ b/sysdeps/unix/sysv/linux/bits/utsname.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 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
@@ -16,6 +16,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef _SYS_UTSNAME_H
+# error "Never include <bits/utsname.h> directly; use <sys/utsname.h> instead."
+#endif
+
 /* Length of the entries in `struct utsname' is 65.  */
 #define _UTSNAME_LENGTH 65
 
diff --git a/sysdeps/unix/sysv/linux/bits/waitflags.h b/sysdeps/unix/sysv/linux/bits/waitflags.h
index ba3528b709..e5945051ed 100644
--- a/sysdeps/unix/sysv/linux/bits/waitflags.h
+++ b/sysdeps/unix/sysv/linux/bits/waitflags.h
@@ -18,7 +18,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifndef _SYS_WAIT_H
-#error "Never use <bits/waitflags.h> directly; include <sys/wait.h> instead."
+# error "Never include <bits/waitflags.h> directly; use <sys/wait.h> instead."
 #endif