Thu Jun 13 00:02:25 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>

	* elf/dl-lookup.c (_dl_lookup_symbol): If no value and *REF is
	null, consider it a strong reference and give the error.

Wed Jun 12 15:52:46 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* elf/dl-open.c (_dl_open): Correctly terminate relocating loop
 	after relocating NEW when it's the only new object.

	* elf/dl-init.c (_dl_init_next): When out of initializers, set
 	_r_debug.r_state to RT_CONSISTENT and call _dl_debug_state just
 	before return.

	* elf/rtld.c (dl_main): Move _dl_debug_initialize call after
 	relocation.  Call it unconditionally and only fill in DT_DEBUG
 	if it's present.  Then call _dl_debug_state with r_state RT_ADD
 	before running initializers.

	* elf/dl-open.c (_dl_open): Call _dl_debug_initialize and then call
 	_dl_debug_state with r_state RT_ADD before running initializers
	* elf/dl-close.c (_dl_close): Call _dl_debug_state with r_state
 	RT_DELETE before running finalizers and with RT_CONSISTENT just
 	before return.

	* elf/Makefile (dl-routines): Add dl-debug.
	* elf/dl-debug.c: New file.
	* elf/rtld.c (_dl_r_debug): Rename to _r_debug and move to dl-debug.c.
	(_dl_r_debug_state): Rename to _dl_debug_state and likewise move.
	(dl_main): Use _dl_debug_initialize.
	* elf/link.h: Fix name to _dl_debug_state in decl.
	(_dl_debug_initialize): Declare new function from dl-debug.c.
	(_r_debug): Declare it.

	* Makerules (distinfo-vars): Add install-{lib,data,bin,sbin,others}.
	In distinfo set $(subdir)-VAR and then set VAR to $($(subdir)-VAR).

	* Makeconfig (rpath-link): New variable; add $(elfobjdir).
	(default-rpath): Use it.
	(built-program-cmd): Use it in LD_LIBRARY_PATH.

	* Makeconfig (sysdep-configures): Prepend $(sysdep_dir) to names tried.

	* sysdeps/unix/Dist: Add make-syscalls.sh.

	* misc/Makefile (headers): Add sys/swap.h.
	* posix/unistd.h: Remove decls for swapon, swapoff.
	* sysdeps/generic/sys/swap.h: New file.
	* sysdeps/unix/sysv/linux/sys/swap.h: New file.

	* sysdeps/unix/sysv/linux/gnu/types.h: Remove temporary hack #define
	of __kernel_fsid_t.  It is correctly defines in <linux/types.h> now.

17 files changed, 256 insertions, 47 deletions

diff --git a/ChangeLog b/ChangeLog
index be4fe22..78a3ea7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,56 @@
+Thu Jun 13 00:02:25 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* elf/dl-lookup.c (_dl_lookup_symbol): If no value and *REF is
+	null, consider it a strong reference and give the error.
+
+Wed Jun 12 15:52:46 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* elf/dl-open.c (_dl_open): Correctly terminate relocating loop
+ 	after relocating NEW when it's the only new object.
+
+	* elf/dl-init.c (_dl_init_next): When out of initializers, set
+ 	_r_debug.r_state to RT_CONSISTENT and call _dl_debug_state just
+ 	before return.
+
+	* elf/rtld.c (dl_main): Move _dl_debug_initialize call after
+ 	relocation.  Call it unconditionally and only fill in DT_DEBUG
+ 	if it's present.  Then call _dl_debug_state with r_state RT_ADD
+ 	before running initializers.
+
+	* elf/dl-open.c (_dl_open): Call _dl_debug_initialize and then call
+ 	_dl_debug_state with r_state RT_ADD before running initializers
+	* elf/dl-close.c (_dl_close): Call _dl_debug_state with r_state
+ 	RT_DELETE before running finalizers and with RT_CONSISTENT just
+ 	before return.
+
+	* elf/Makefile (dl-routines): Add dl-debug.
+	* elf/dl-debug.c: New file.
+	* elf/rtld.c (_dl_r_debug): Rename to _r_debug and move to dl-debug.c.
+	(_dl_r_debug_state): Rename to _dl_debug_state and likewise move.
+	(dl_main): Use _dl_debug_initialize.
+	* elf/link.h: Fix name to _dl_debug_state in decl.
+	(_dl_debug_initialize): Declare new function from dl-debug.c.
+	(_r_debug): Declare it.
+
+	* Makerules (distinfo-vars): Add install-{lib,data,bin,sbin,others}.
+	In distinfo set $(subdir)-VAR and then set VAR to $($(subdir)-VAR).
+
+	* Makeconfig (rpath-link): New variable; add $(elfobjdir).
+	(default-rpath): Use it.
+	(built-program-cmd): Use it in LD_LIBRARY_PATH.
+
+	* Makeconfig (sysdep-configures): Prepend $(sysdep_dir) to names tried.
+
+	* sysdeps/unix/Dist: Add make-syscalls.sh.
+
+	* misc/Makefile (headers): Add sys/swap.h.
+	* posix/unistd.h: Remove decls for swapon, swapoff.
+	* sysdeps/generic/sys/swap.h: New file.
+	* sysdeps/unix/sysv/linux/sys/swap.h: New file.
+
+	* sysdeps/unix/sysv/linux/gnu/types.h: Remove temporary hack #define
+	of __kernel_fsid_t.  It is correctly defines in <linux/types.h> now.
+
 Tue Jun 11 23:23:30 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
 
 	* Makerules (LDFLAGS-c.so): Use __libc_main instead of
diff --git a/Makeconfig b/Makeconfig
index 0bb64bc..1d53458 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -88,11 +88,12 @@ $(common-objpfx)config.make: $(common-objpfx)config.status $(..)config.h.in
 
 # Find all the sysdeps configure fragments, to make sure we re-run
 # configure when any of them changes.
-sysdep-configures = $(foreach dir,$(config-sysdirs),\
-			      $(patsubst %.in,%,\
-					 $(firstword $(wildcard \
-					    $(dir)/configure \
-					    $(dir)/configure.in))))
+sysdep-configures = \
+  $(foreach dir,$(config-sysdirs),\
+	    $(patsubst %.in,%,\
+		       $(firstword $(wildcard \
+		         $(sysdep_dir)/$(dir)/configure \
+			 $(sysdep_dir)/$(dir)/configure.in))))
 
 # Force the user to configure before making.
 $(common-objpfx)config.status: $(..)configure $(sysdep-configures)
@@ -312,7 +313,7 @@ ifeq (yes,$(build-shared))
 # We need the versioned name of libc.so in the deps of $(others) et al
 # so that the symlink to libc.so is created before anything tries to
 # run the linked programs.
-link-libc = -Wl,-rpath-link=$(common-objdir):$(elfobjdir) \
+link-libc = -Wl,-rpath-link=$(rpath-link) \
 	    $(common-objpfx)libc.so$(libc.so-version) \
 	    $(elfobjdir)/$(rtld-installed-name) \
 	    $(common-objpfx)libc.a $(gnulib)
@@ -323,6 +324,8 @@ default-rpath = $(slibdir):$(libdir)
 else
 default-rpath = $(libdir)
 endif
+# This is how to find at build-time things that will be installed there.
+rpath-link = $(common-objdir):$(elfobjdir)
 else
 link-libc = $(common-objpfx)libc.a $(gnulib) $(common-objpfx)libc.a
 endif
@@ -356,9 +359,9 @@ built-program-cmd = $(built-program-file)
 else
 comma = ,
 define built-program-cmd
-LD_LIBRARY_PATH=$(common-objdir)$(patsubst -Wl$(comma)-rpath-link=%,:%,\
-					   $(filter -Wl$(comma)-rpath-link=%,\
-						    $(sysdep-LDFLAGS))) \
+LD_LIBRARY_PATH=$(rpath-link)$(patsubst -Wl$(comma)-rpath-link=%,:%,\
+					 $(filter -Wl$(comma)-rpath-link=%,\
+						  $(sysdep-LDFLAGS))) \
 $(elf-objpfx)ld.so $(built-program-file)
 endef
 endif
diff --git a/Makerules b/Makerules
index 412b217..4ea38ed 100644
--- a/Makerules
+++ b/Makerules
@@ -420,10 +420,15 @@ endif
 define o-iterator-doit
 $(common-objpfx)$(patsubst %,$(libtype$o),c)($(ar-symtab-name)): \
 	  $(common-objpfx)$(patsubst %,$(libtype$o),c)(\
-	    $(patsubst $(objpfx)%,%,$(o-objects))) \
-	  $(filter subdir_lib,$(firstword $(subdir) subdir_lib)); \
+	    $(patsubst $(objpfx)%,%,$(o-objects))) $(subdirs-stamp-o); \
 	$$(RANLIB) $$(common-objpfx)$$(patsubst %,$$(libtype$o),c)
 endef
+ifndef subdir
+subdirs-stamps := $(foreach d,$(subdirs),\
+			    $(firstword $(objdir) $(subdir))/stamp%-$d)
+subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
+$(subdirs-stamps): subdir_lib;
+endif
 object-suffixes-left = $(object-suffixes)
 include $(o-iterator)
 
@@ -810,8 +815,10 @@ define distinfo-vars
 rm -f $@.new
 $(foreach var,subdir subdir-dirs sources elided-routines sysdep_routines \
 	      headers sysdep_headers distribute dont_distribute generated \
-	      others tests extra-libs $(extra-libs:%=%-routines),
-echo >> $@.new '$(var)	:= $($(var))')
+	      others tests extra-libs $(extra-libs:%=%-routines) \
+	      $(addprefix install-,lib data bin sbin others),
+echo >> $@.new '$(subdir)-$(var) := $($(var))'
+echo >> $@.new '$(var) = $$($(subdir)-$(var))')
 endef
 
 ifneq (,$(strip $(gpl2lgpl)))
diff --git a/elf/Makefile b/elf/Makefile
index 07ffbd8..be7604d 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -26,7 +26,7 @@ routines	= $(dl-routines) dl-open dl-close dl-symbol dl-support
 # The core dynamic linking functions are in libc for the static and
 # profiled libraries.
 dl-routines	= $(addprefix dl-,load lookup object reloc deps \
-			          runtime error init fini)
+			          runtime error init fini debug)
 # But they are absent from the shared libc, because that code is in ld.so.
 elide-routines.so = $(dl-routines) dl-support
 
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 70d7ab4..184d382 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -41,6 +41,10 @@ _dl_close (struct link_map *map)
     /* There are still references to this object.  Do nothing more.  */
     return;
 
+  /* Notify the debugger we are about to remove some loaded objects.  */
+  _r_debug.r_state = RT_DELETE;
+  _dl_debug_state ();
+
   list = map->l_searchlist;
 
   /* The search list contains a counted reference to each object it
@@ -105,4 +109,8 @@ _dl_close (struct link_map *map)
     }
 
   free (list);
+
+  /* Notify the debugger those objects are finalized and gone.  */
+  _r_debug.r_state = RT_CONSISTENT;
+  _dl_debug_state ();
 }
diff --git a/elf/dl-debug.c b/elf/dl-debug.c
new file mode 100644
index 0000000..861e001
--- /dev/null
+++ b/elf/dl-debug.c
@@ -0,0 +1,56 @@
+/* Communicate dynamic linker state to the debugger at runtime.
+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 <link.h>
+
+/* This structure communicates dl state to the debugger.  The debugger
+   normally finds it via the DT_DEBUG entry in the dynamic section, but in
+   a statically-linked program there is no dynamic section for the debugger
+   to examine and it looks for this particular symbol name.  */
+struct r_debug _r_debug;
+
+
+/* Initialize _r_debug if it has not already been done.  The argument is
+   the run-time load address of the dynamic linker, to be put in
+   _r_debug.r_ldbase.  Returns the address of _r_debug.  */
+
+struct r_debug *
+_dl_debug_initialize (ElfW(Addr) ldbase)
+{
+  if (_r_debug.r_brk == 0)
+    {
+      /* Tell the debugger where to find the map of loaded objects.  */
+      _r_debug.r_version = 1	/* R_DEBUG_VERSION XXX */;
+      _r_debug.r_ldbase = _dl_rtld_map.l_addr; /* Record our load address.  */
+      _r_debug.r_map = _dl_loaded;
+      _r_debug.r_brk = (ElfW(Addr)) &_dl_debug_state;
+    }
+
+  return &_r_debug;
+}
+
+
+/* This function exists solely to have a breakpoint set on it by the
+   debugger.  The debugger is supposed to find this function's address by
+   examining the r_brk member of struct r_debug, but GDB 4.15 in fact looks
+   for this particular symbol name in the PT_INTERP file.  */
+void
+_dl_debug_state (void)
+{
+}
diff --git a/elf/dl-init.c b/elf/dl-init.c
index 66ef83e..6259c35 100644
--- a/elf/dl-init.c
+++ b/elf/dl-init.c
@@ -65,5 +65,10 @@ _dl_init_next (struct link_map *map)
       l->l_init_called = 1;
     }
 
+
+  /* Notify the debugger all new objects are now ready to go.  */
+  _r_debug.r_state = RT_CONSISTENT;
+  _dl_debug_state ();
+
   return 0;
 }
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index bbccbc0..7ceffa2 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -129,7 +129,8 @@ _dl_lookup_symbol (const char *undef_name, const ElfW(Sym) **ref,
 	  }
       }
 
-  if (weak_value.s == NULL && ELFW(ST_BIND) ((*ref)->st_info) != STB_WEAK)
+  if (weak_value.s == NULL &&
+      !*ref || ELFW(ST_BIND) ((*ref)->st_info) != STB_WEAK)
     {
       /* We could find no value for a strong reference.  */
       const char msg[] = "undefined symbol: ";
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 9389303..373d32d 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -29,6 +29,7 @@ _dl_open (struct link_map *parent, const char *file, int mode)
 {
   struct link_map *new, *l;
   ElfW(Addr) init;
+  struct r_debug *r;
 
 
   /* Load the named object.  */
@@ -47,7 +48,7 @@ _dl_open (struct link_map *parent, const char *file, int mode)
   l = new;
   while (l->l_next)
     l = l->l_next;
-  do
+  while (1)
     {
       if (! l->l_relocated)
 	{
@@ -56,8 +57,10 @@ _dl_open (struct link_map *parent, const char *file, int mode)
 	  *_dl_global_scope_end = NULL;
 	}
 
+      if (l == new)
+	break;
       l = l->l_prev;
-    } while (l != new);
+    }
 
   new->l_global = (mode & RTLD_GLOBAL);
   if (new->l_global)
@@ -108,6 +111,14 @@ _dl_open (struct link_map *parent, const char *file, int mode)
 	}
     }
 
+
+  /* Notify the debugger we have added some objects.  We need to call
+     _dl_debug_initialize in a static program in case dynamic linking has
+     not been used before.  */
+  r = _dl_debug_initialize (0);
+  r->r_state = RT_ADD;
+  _dl_debug_state ();
+
   /* Run the initializer functions of new objects.  */
   while (init = _dl_init_next (new))
     (*(void (*) (void)) init) ();
diff --git a/elf/link.h b/elf/link.h
index 6910445..f43ec41 100644
--- a/elf/link.h
+++ b/elf/link.h
@@ -62,6 +62,9 @@ struct r_debug
     ElfW(Addr) r_ldbase;	/* Base address the linker is loaded at.  */
   };
 
+/* This is the instance of that structure used by the dynamic linker.  */
+extern struct r_debug _r_debug;
+
 /* This symbol refers to the "dynamic structure" in the `.dynamic' section
    of whatever module refers to `_DYNAMIC'.  So, to find its own
    `struct r_debug', a program could do:
@@ -291,7 +294,12 @@ extern void _dl_fini (void);
    any shared object mappings.  The `r_state' member of `struct r_debug'
    says what change is taking place.  This function's address is
    the value of the `r_brk' member.  */
-extern void _dl_r_debug_state (void);
+extern void _dl_debug_state (void);
+
+/* Initialize `struct r_debug' if it has not already been done.  The
+   argument is the run-time load address of the dynamic linker, to be put
+   in the `r_ldbase' member.  Returns the address of the structure.  */
+extern struct r_debug *_dl_debug_initialize (ElfW(Addr) ldbase);
 
 
 #endif /* link.h */
diff --git a/elf/rtld.c b/elf/rtld.c
index c9ddfb5..7befc0a 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -46,8 +46,6 @@ int _dl_argc;
 char **_dl_argv;
 const char *_dl_rpath;
 
-struct r_debug _dl_r_debug;
-
 static void dl_main (const ElfW(Phdr) *phdr,
 		     ElfW(Half) phent,
 		     ElfW(Addr) *user_entry);
@@ -229,12 +227,6 @@ of this helper program; chances are you did not intend to run this program.\n",
     /* Set up our cache of pointers into the hash table.  */
     _dl_setup_hash (l);
 
-  if (l->l_info[DT_DEBUG])
-    /* There is a DT_DEBUG entry in the dynamic section.  Fill it in
-       with the run-time address of the r_debug structure, which we
-       will set up later to communicate with the debugger.  */
-    l->l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) &_dl_r_debug;
-
   /* Put the link_map for ourselves on the chain so it can be found by
      name.  */
   _dl_rtld_map.l_name = (char *) _dl_rtld_map.l_libname = interpreter_name;
@@ -343,11 +335,20 @@ of this helper program; chances are you did not intend to run this program.\n",
       _dl_relocate_object (&_dl_rtld_map, &_dl_default_scope[2], 0);
   }
 
-  /* Tell the debugger where to find the map of loaded objects.  */
-  _dl_r_debug.r_version = 1	/* R_DEBUG_VERSION XXX */;
-  _dl_r_debug.r_ldbase = _dl_rtld_map.l_addr; /* Record our load address.  */
-  _dl_r_debug.r_map = _dl_loaded;
-  _dl_r_debug.r_brk = (ElfW(Addr)) &_dl_r_debug_state;
+  {
+    /* Initialize _r_debug.  */
+    struct r_debug *r = _dl_debug_initialize (_dl_rtld_map.l_addr);
+
+    l = _dl_loaded;
+    if (l->l_info[DT_DEBUG])
+      /* There is a DT_DEBUG entry in the dynamic section.  Fill it in
+	 with the run-time address of the r_debug structure  */
+      l->l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) r;
+
+    /* Notify the debugger that all objects are now mapped in.  */
+    r->r_state = RT_ADD;
+    _dl_debug_state ();
+  }
 
   if (_dl_rtld_map.l_info[DT_INIT])
     {
@@ -365,10 +366,3 @@ of this helper program; chances are you did not intend to run this program.\n",
   /* Once we return, _dl_sysdep_start will invoke
      the DT_INIT functions and then *USER_ENTRY.  */
 }
-
-/* This function exists solely to have a breakpoint set on it by the
-   debugger.  */
-void
-_dl_r_debug_state (void)
-{
-}
diff --git a/misc/Makefile b/misc/Makefile
index 741b04c..3dff4ae 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -27,7 +27,7 @@ headers	:= sys/uio.h iovec.h sys/ioctl.h ioctls.h ioctl-types.h \
 	   a.out.h nlist.h stab.h stab.def sgtty.h sys/dir.h sys/cdefs.h \
 	   ttyent.h syslog.h sys/syslog.h paths.h sys/reboot.h \
 	   sys/mman.h sys/param.h fstab.h mntent.h search.h err.h error.h\
-	   sys/queue.h sysexits.h syscall.h sys/syscall.h
+	   sys/queue.h sysexits.h syscall.h sys/syscall.h sys/swap.h
 
 routines := brk sbrk sstk ioctl \
 	    readv writev \
diff --git a/posix/unistd.h b/posix/unistd.h
index 72ecd96..8c8a488 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -662,13 +662,6 @@ extern int acct __P ((__const char *__name));
    This call is restricted to the super-user.  */
 extern int chroot __P ((__const char *__path));
 
-/* Make the block special device PATH available to the system for swapping.
-   This call is restricted to the super-user.  */
-extern int swapon __P ((__const char *__path));
-
-/* Stop using block special device PATH for swapping.  */
-extern int swapoff __P ((__const char *__path));
-
 
 /* Successive calls return the shells listed in `/etc/shells'.  */
 extern char *getusershell __P ((void));
diff --git a/sysdeps/generic/sys/swap.h b/sysdeps/generic/sys/swap.h
new file mode 100644
index 0000000..17003a8
--- /dev/null
+++ b/sysdeps/generic/sys/swap.h
@@ -0,0 +1,33 @@
+/* Calls to enable and disable swapping on specified locations.  Unix version.
+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 __SYS_SWAP_H
+
+#define __SYS_SWAP_H	1
+#include <features.h>
+
+
+/* Make the block special device PATH available to the system for swapping.
+   This call is restricted to the super-user.  */
+extern int swapon __P ((__const char *__path));
+
+/* Stop using block special device PATH for swapping.  */
+extern int swapoff __P ((__const char *__path));
+
+#endif /* sys/swap.h */
diff --git a/sysdeps/unix/Dist b/sysdeps/unix/Dist
index f3b02e6..9f4ecc4 100644
--- a/sysdeps/unix/Dist
+++ b/sysdeps/unix/Dist
@@ -3,3 +3,4 @@ ioctls-tmpl.c ioctls.awk snarf-ioctls
 make_errlist.c
 mk-local_lim.c
 s-proto.S
+make-syscalls.sh
diff --git a/sysdeps/unix/sysv/linux/gnu/types.h b/sysdeps/unix/sysv/linux/gnu/types.h
index 719d136..402df2a 100644
--- a/sysdeps/unix/sysv/linux/gnu/types.h
+++ b/sysdeps/unix/sysv/linux/gnu/types.h
@@ -54,7 +54,6 @@ typedef __kernel_nlink_t __nlink_t; 	/* Type of file link counts.  */
 typedef __kernel_off_t __off_t;		/* Type of file sizes and offsets.  */
 typedef __kernel_pid_t __pid_t;		/* Type of process identifications.  */
 typedef __kernel_ssize_t __ssize_t;	/* Type of a byte count, or error.  */
-#define __kernel_fsid_t long long /* XXX */
 typedef __kernel_fsid_t __fsid_t;	/* Type of file system IDs.  */
 
 /* Everythin' else.  */
diff --git a/sysdeps/unix/sysv/linux/sys/swap.h b/sysdeps/unix/sysv/linux/sys/swap.h
new file mode 100644
index 0000000..f454c8c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sys/swap.h
@@ -0,0 +1,37 @@
+/* Calls to enable and disable swapping on specified locations.  Linux version.
+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 __SYS_SWAP_H
+
+#define __SYS_SWAP_H	1
+#include <features.h>
+
+/* Get constants from kernel headers.  */
+#include <linux/swap.h>
+
+
+/* Make the block special device PATH available to the system for swapping.
+   This call is restricted to the super-user.  */
+extern int swapon __P ((__const char *__path, int __flags));
+
+/* Stop using block special device PATH for swapping.  */
+extern int swapoff __P ((__const char *__path));
+
+
+#endif /* sys/swap.h */