Mark internal unistd functions hidden in ld.so

Since internal unistd functions are only used internally in ld.so and
libc.so, they can be made hidden.  Some functions can't be hidden in
ld.so on Hurd since they will be preempted by the ones in libc.so after
bootstrap.

	[BZ #19122]
	* include/unistd.h [IS_IN (rtld)]: Include <dl-unistd.h>.
	* sysdeps/generic/dl-unistd.h: New file.
	* sysdeps/mach/hurd/dl-unistd.h: Likewise.

diff --git a/include/unistd.h b/include/unistd.h
index cb416378a1b031963cf4eca8a5a4313c9d115b46..5152f64f91c4179dfb0edf465e634548732db6c8 100644 (file)
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -158,7 +158,7 @@ rtld_hidden_proto (__libc_enable_secure)
 
 
 /* Various internal function.  */
-extern void __libc_check_standard_fds (void);
+extern void __libc_check_standard_fds (void) attribute_hidden;
 
 
 /* Internal name for fork function.  */
@@ -176,6 +176,10 @@ extern int __have_dup3 attribute_hidden;
 extern int __getlogin_r_loginuid (char *name, size_t namesize)
      attribute_hidden;
 
+#  if IS_IN (rtld)
+#   include <dl-unistd.h>
+#  endif
+
 __END_DECLS
 # endif
 

diff --git a/sysdeps/generic/dl-unistd.h b/sysdeps/generic/dl-unistd.h
new file mode 100644 (file)
index 0000000..98da672
--- /dev/null
+++ b/sysdeps/generic/dl-unistd.h
@@ -0,0 +1,30 @@
+/* Functions with hidden attribute internal to ld.so, which are declared
+   in include/unistd.h.  Generic version.
+   Copyright (C) 2015 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+extern __typeof (__access) __access attribute_hidden;
+extern __typeof (__brk) __brk attribute_hidden;
+extern __typeof (__close) __close attribute_hidden;
+extern __typeof (__getcwd) __getcwd attribute_hidden;
+extern __typeof (__getpid) __getpid attribute_hidden;
+extern __typeof (__libc_read) __libc_read attribute_hidden;
+extern __typeof (__libc_write) __libc_write attribute_hidden;
+extern __typeof (__lseek) __lseek attribute_hidden;
+extern __typeof (__profil) __profil attribute_hidden;
+extern __typeof (__read) __read attribute_hidden;
+extern __typeof (__sbrk) __sbrk attribute_hidden;

diff --git a/sysdeps/mach/hurd/dl-unistd.h b/sysdeps/mach/hurd/dl-unistd.h
new file mode 100644 (file)
index 0000000..1777a21
--- /dev/null
+++ b/sysdeps/mach/hurd/dl-unistd.h
@@ -0,0 +1,25 @@
+/* Functions with hidden attribute internal to ld.so, which are declared
+   in include/unistd.h.  Hurd version.
+   Copyright (C) 2015 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+extern __typeof (__access) __access attribute_hidden;
+extern __typeof (__brk) __brk attribute_hidden;
+extern __typeof (__lseek) __lseek attribute_hidden;
+extern __typeof (__profil) __profil attribute_hidden;
+extern __typeof (__read) __read attribute_hidden;
+extern __typeof (__sbrk) __sbrk attribute_hidden;