OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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.  __close, __getcwd, __getpid,
__libc_read and __libc_write 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.
This commit is contained in:
H.J. Lu 2016-01-06 12:37:04 -08:00
parent 38acf35697
commit 730bbab2c3
4 changed files with 70 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog
View File

@ -1,3 +1,10 @@
2016-01-05 H.J. Lu <hongjiu.lu@intel.com>
[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.
2016-01-05 H.J. Lu <hongjiu.lu@intel.com>
[BZ #19122]

6
include/unistd.h
View File

@ -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

30
sysdeps/generic/dl-unistd.h Normal file
View File

@ -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;

28
sysdeps/mach/hurd/dl-unistd.h Normal file
View File

@ -0,0 +1,28 @@
/* 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/>. */
/* __close, __getcwd, __getpid, __libc_read and __libc_write can't be
hidden in ld.so on Hurd since they will be preempted by the ones in
libc.so after bootstrap. */
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;