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hurd: Do not hide rtld symbols which need to be preempted 

* sysdeps/generic/dl-fcntl.h: New file, adds attribute_hidden to __open
	and __fcntl.
	* sysdeps/mach/hurd/dl-fcntl.h: New file, adds attribute_hidden to
	__fcntl only.
	* include/fcntl.h [IS_IN (rtld)]: Include <dl-fcntl.h> instead of
	adding attribute_hidden to __open and __fcntl.
This commit is contained in:
Samuel Thibault 2016-03-20 17:56:47 +01:00
parent c775104ac6
commit d2129ad457
4 changed files with 53 additions and 2 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2016-03-20 Samuel Thibault <samuel.thibault@ens-lyon.org>:
* sysdeps/generic/dl-fcntl.h: New file, adds attribute_hidden to __open
and __fcntl.
* sysdeps/mach/hurd/dl-fcntl.h: New file, adds attribute_hidden to
__fcntl only.
* include/fcntl.h [IS_IN (rtld)]: Include <dl-fcntl.h> instead of
adding attribute_hidden to __open and __fcntl.
2016-03-20 Samuel Thibault <samuel.thibault@ens-lyon.org>
* sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Strip

3
include/fcntl.h
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@ -31,8 +31,7 @@ extern int __openat64_2 (int __fd, const char *__path, int __oflag);
#if IS_IN (rtld)
extern __typeof (__open) __open attribute_hidden;
extern __typeof (__fcntl) __fcntl attribute_hidden;
# include <dl-fcntl.h>
#endif
/* Flag determining whether the *at system calls are available. */

21
sysdeps/generic/dl-fcntl.h Normal file
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@ -0,0 +1,21 @@
/* Functions with hidden attribute internal to ld.so, which are declared
in include/fcntl.h. Generic version.
Copyright (C) 2016 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 (__open) __open attribute_hidden;
extern __typeof (__fcntl) __fcntl attribute_hidden;

22
sysdeps/mach/hurd/dl-fcntl.h Normal file
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@ -0,0 +1,22 @@
/* Functions with hidden attribute internal to ld.so, which are declared
in include/fcntl.h. Hurd version.
Copyright (C) 2016 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/>. */
/* __open can't be hidden in ld.so on Hurd since it will be preempted by the
one in libc.so after bootstrap. */
extern __typeof (__fcntl) __fcntl attribute_hidden;