* hurd/Makefile (routines): Add get-host, set-host.

	(distribute): Add hurdhost.h.
	* hurd/hurdhost.h: New file.
	* sysdeps/mach/hurd/gethostname.c: Use _hurd_get_host_config.
	* sysdeps/mach/hurd/gethostid.c: Likewise.
	* sysdeps/mach/hurd/sethostname.c: Use _hurd_set_host_config.
	* sysdeps/mach/hurd/sethostid.c: Likewise.
	* hurd/get-host.c: New file.
	* hurd/set-host.c: New file.

	* math/Makefile (headers): Add fpu_control.h.
	(aux): New variable, list fpu_control and setfpucw.
	* sysdeps/generic/fpu_control.c: New file.
	* sysdeps/stub/fpu_control.h: New file.
	* sysdeps/unix/sysv/linux/m68k/fpu_control.h: Moved to ...
	* sysdeps/m68k/fpu_control.h: here.
	* sysdeps/unix/sysv/linux/i386/fpu_control.h: Moved to ...
	* sysdeps/i386/fpu_control.h: here.
	* sysdeps/unix/sysv/linux/alpha/fpu_control.h: Moved to ...
	* sysdeps/alpha/fpu/fpu_control.h: here.  Fixed copyright.
	* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Remove
	setfpucw, fpu_control.
	* sysdeps/unix/sysv/linux/alpha/fpu_control.c: File removed.
	* sysdeps/unix/sysv/linux/setfpucw.c: Moved to ...
	* sysdeps/generic/setfpucw.c: here.
	(__fpu_control): Variable removed.
	(__setfpucw): Use SET even if zero.

ChangeLog

@@ -1,5 +1,33 @@
 Sat Jun 15 18:13:43 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
 
+	* hurd/Makefile (routines): Add get-host, set-host.
+	(distribute): Add hurdhost.h.
+	* hurd/hurdhost.h: New file.
+	* sysdeps/mach/hurd/gethostname.c: Use _hurd_get_host_config.
+	* sysdeps/mach/hurd/gethostid.c: Likewise.
+	* sysdeps/mach/hurd/sethostname.c: Use _hurd_set_host_config.
+	* sysdeps/mach/hurd/sethostid.c: Likewise.
+	* hurd/get-host.c: New file.
+	* hurd/set-host.c: New file.
+
+	* math/Makefile (headers): Add fpu_control.h.
+	(aux): New variable, list fpu_control and setfpucw.
+	* sysdeps/generic/fpu_control.c: New file.
+	* sysdeps/stub/fpu_control.h: New file.
+	* sysdeps/unix/sysv/linux/m68k/fpu_control.h: Moved to ...
+	* sysdeps/m68k/fpu_control.h: here.
+	* sysdeps/unix/sysv/linux/i386/fpu_control.h: Moved to ...
+	* sysdeps/i386/fpu_control.h: here.
+	* sysdeps/unix/sysv/linux/alpha/fpu_control.h: Moved to ...
+	* sysdeps/alpha/fpu/fpu_control.h: here.  Fixed copyright.
+	* sysdeps/unix/sysv/linux/alpha/Makefile (sysdep_routines): Remove
+	setfpucw, fpu_control.
+	* sysdeps/unix/sysv/linux/alpha/fpu_control.c: File removed.
+	* sysdeps/unix/sysv/linux/setfpucw.c: Moved to ...
+	* sysdeps/generic/setfpucw.c: here.
+	(__fpu_control): Variable removed.
+	(__setfpucw): Use SET even if zero.
+
 	* elf/dl-deps.c (_dl_map_object_deps): Set MAP's mark bit before loop.
 	Set mark bits of deps as opened, instead of as scanned.
 

hurd/Makefile

@@ -40,6 +40,7 @@ server-interfaces	:= hurd/msg faultexc
 
 routines = hurdstartup hurdinit \
 	   hurdid hurdlookup hurdpid hurdrlimit hurdprio hurdexec \
+	   get-host set-host \
 	   path-lookup \
 	   setauth \
 	   pid2task task2pid \
@@ -57,7 +58,8 @@ sig	= hurdsig hurdfault siginfo hurd-raise preempt-sig \
 dtable	= dtable port2fd new-fd alloc-fd intern-fd \
 	  getdport openport \
 	  fd-close fd-read fd-write hurdioctl ctty-input ctty-output
-distribute = hurdstartup.h hurdfault.h faultexc.defs intr-rpc.defs intr-rpc.h
+distribute = hurdstartup.h hurdfault.h hurdhost.h \
+	     faultexc.defs intr-rpc.defs intr-rpc.h
 
 # XXX this is a temporary hack; see hurdmalloc.h
 routines += hurdmalloc

hurd/get-host.c

@@ -0,0 +1,57 @@
+/* Get a host configuration item kept as the whole contents of a file.
+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.  */
+
+#include <hurd.h>
+#include "hurdhost.h"
+
+ssize_t
+_hurd_get_host_config (const char *item, char *buf, size_t buflen)
+{
+  error_t err;
+  char *data;
+  mach_msg_type_number_t nread, more;
+  file_t config = __file_name_lookup (item, O_RDONLY, 0);
+  if (config == MACH_PORT_NULL)
+    return -1;
+
+  data = buf;
+  err = __io_read (config, &data, &nread, -1, buflen);
+  if (! err)
+    /* Check if there is more in the file we didn't read.  */
+    err = __io_readable (config, &more);
+  __mach_port_deallocate (__mach_task_self (), config);
+  if (err)
+    return __hurd_fail (err);
+  if (data != buf)
+    {
+      memcpy (buf, data, nread);
+      __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
+    }
+
+  /* Remove newlines in case someone wrote the file by hand.  */
+  while (buf[nread - 1] == '\n')
+    buf[--nread] = '\0';
+
+  if (more)
+    /* If we didn't read the whole file, tell the caller to use a bigger
+       buffer next time.  */
+    return __hurd_fail (ENAMETOOLONG);
+
+  return nread;
+}

hurd/hurdhost.h

@@ -0,0 +1,28 @@
+/* Host configuration items kept as the whole contents of a file.
+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.  */
+
+/* Fetch and atomically store the contents of the file ITEM.
+   Returns the size read or written, or -1 for errors.
+   If BUFLEN is not big enough to contain the whole contents,
+   BUFLEN bytes of BUF are filled in and we fail with ENAMETOOLONG.  */
+
+ssize_t _hurd_get_host_config (const char *item,
+			       char *buf, size_t buflen);
+ssize_t _hurd_set_host_config (const char *item,
+			       const char *value, size_t valuelen);

hurd/set-host.c

@@ -0,0 +1,48 @@
+/* Set a host configuration item kept as the whole contents of a file.
+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.  */
+
+#include <hurd.h>
+#include "hurdhost.h"
+
+ssize_t
+_hurd_set_host_config (const char *item, const char *value, size_t valuelen)
+{
+  error_t err;
+  mach_msg_type_number_t nwrote;
+  file_t new, dir;
+
+  dir = __file_name_split (item, &item);
+  if (dir == MACH_PORT_NULL)
+    return -1;
+
+  /* Create a new node.  */
+  err = __dir_mkfile (dir, O_CREAT|O_TRUNC, 0600, &new);
+  if (! err)
+    {
+      /* Write the contents.  */
+      err = __io_write (new, value, valuelen, 0, &nwrote);
+      if (! err)
+	/* Atomically link the new node onto the name.  */
+	err = __dir_link (dir, item, 0);
+      __mach_port_deallocate (__mach_task_self (), new);
+    }
+  __mach_port_deallocate (__mach_task_self (), dir);
+
+  return nread;
+}

math/Makefile

@@ -21,11 +21,13 @@
 subdir		:= math
 
 # Installed header files.
-headers		:= math.h mathcalls.h __math.h huge_val.h nan.h
+headers		:= math.h mathcalls.h __math.h huge_val.h nan.h fpu_control.h
 
 # Internal header files.
 distribute	:= math_private.h machine/asm.h machine/endian.h
 
+# FPU support code.
+aux		:= fpu_control setfpucw
 
 # Build the -lm library.
 

sysdeps/unix/sysv/linux/alpha/fpu_control.h → sysdeps/alpha/fpu/fpu_control.h

@@ -1,15 +1,23 @@
-/* Copyright (C) 1993  Olaf Flebbe
-This file is part of the Linux C Library.
+/* FPU control word bits.  Alpha version.
+Copyright (C) 1996 Free Software Foundation, Inc.
+Contributed by Olaf Flebbe.
 
-The Linux C Library is free software; you can redistribute it and/or
+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 Linux C Library is distributed in the hope that it will be useful,
+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.  */
+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 _ALPHA_FPU_CONTROL_H
 #define _ALPHA_FPU_CONTROL_H
@@ -28,7 +36,7 @@ Library General Public License for more details.  */
  * OM: Overflow mask
  * UM: Underflow mask
  * PM: Precision (inexact result) mask
- * 
+ *
  * Mask bit is 1 means no interrupt.
  *
  * PC: Precision control
@@ -51,7 +59,7 @@ Library General Public License for more details.  */
 #include <features.h>
 
 /* masking of interrupts */
-#define _FPU_MASK_IM  0x01  
+#define _FPU_MASK_IM  0x01
 #define _FPU_MASK_DM  0x02
 #define _FPU_MASK_ZM  0x04
 #define _FPU_MASK_OM  0x08
@@ -84,7 +92,7 @@ Library General Public License for more details.  */
        one can use /d to get round to +infinity with no extra overhead
        (so long as the default isn't changed, of course...)
      - exceptions on overflow, zero divide and NaN */
-#define _FPU_DEFAULT  0x1f72 
+#define _FPU_DEFAULT  0x1f72
 
 /* IEEE:  same as above, but exceptions */
 #define _FPU_IEEE     0x1f7f

sysdeps/unix/sysv/linux/alpha/fpu_control.c → sysdeps/generic/fpu_control.c

@@ -1,5 +1,6 @@
-/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
-   Contributed by David Mosberger (davidm@azstarnet.com).
+/* Default FPU control word initialization.
+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
@@ -18,4 +19,6 @@ Cambridge, MA 02139, USA.  */
 
 #include <fpu_control.h>
 
+/* This module defines `__fpu_control' with the default value.  */
+
 fpu_control_t __fpu_control = _FPU_DEFAULT;

sysdeps/unix/sysv/linux/setfpucw.c → sysdeps/generic/setfpucw.c

@@ -29,9 +29,5 @@ __setfpucw (fpu_control_t set)
 
   /* Preserve the reserved bits, and set the rest as the user
      specified (or the default, if the user gave zero).  */
-  _FPU_SETCW ((cw & _FPU_RESERVED) | ((set ?: _FPU_DEFAULT) & ~_FPU_RESERVED));
+  _FPU_SETCW ((cw & _FPU_RESERVED) | (set & ~_FPU_RESERVED));
 }
-
-/* The startup code in init-first.c calls __setfpucw (__fpu_control).  */
-
-fpu_control_t __fpu_control;

sysdeps/unix/sysv/linux/i386/fpu_control.h → sysdeps/i386/fpu_control.h

@@ -1,4 +1,5 @@
-/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
+/* FPU control word bits.  i387 version.
+Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 Contributed by Olaf Flebbe.
 

sysdeps/mach/hurd/gethostid.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 96 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
@@ -17,17 +17,19 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave,
 Cambridge, MA 02139, USA.  */
 
 #include <ansidecl.h>
-#include <errno.h>
 #include <unistd.h>
 #include <hurd.h>
+#include "hurdhost.h"
 
 /* Return the current machine's Internet number.  */
 long int
 DEFUN_VOID(gethostid)
 {
-  int hostid;
-  error_t err;
-  if (err = __USEPORT (PROC, __proc_gethostid (port, &hostid)))
-    return __hurd_fail (err);
-  return hostid;
+  /* The hostid is just the contents of the file /etc/hostid,
+     kept as text of hexadecimal digits.  */
+  char buf[8];
+  ssize_t n = _hurd_get_host_config ("/etc/hostid", buf, sizeof buf);
+  if (n < 0)
+    return -1;
+  return strtol (buf, NULL, 16);
 }

sysdeps/mach/hurd/gethostname.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 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
@@ -17,11 +17,8 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave,
 Cambridge, MA 02139, USA.  */
 
 #include <ansidecl.h>
-#include <errno.h>
 #include <unistd.h>
-#include <hurd.h>
-#include <hurd/port.h>
-#include <string.h>
+#include "hurdhost.h"
 
 /* Put the name of the current host in no more than LEN bytes of NAME.
    The result is null-terminated if LEN is large enough for the full
@@ -30,19 +27,9 @@ int
 DEFUN(__gethostname, (name, len),
       char *name AND size_t len)
 {
-  error_t err;
-  char *buf = name;
-  mach_msg_type_number_t buflen = len;
-  if (err = __USEPORT (PROC, __proc_gethostname (port, &buf, &buflen)))
-    return __hurd_fail (err);
-  if (buf != name)
-    {
-      memcpy (name, buf, len < buflen ? len : buflen);
-      __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
-    }
-  if (buflen > len)
-    return __hurd_fail (ENAMETOOLONG);
-  return 0;
+  /* The host name is just the contents of the file /etc/hostname.  */
+  ssize_t n = _hurd_get_host_config ("/etc/hostname", name, len);
+  return n < 0 ? -1 : 0;
 }
 
 weak_alias (__gethostname, gethostname)