From d9890b089cf106e22cff5053979ba78ec0376a72 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 14 Oct 2015 15:21:55 -0700 Subject: [PATCH] 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 . * sysdeps/generic/dl-unistd.h: New file. * sysdeps/mach/hurd/dl-unistd.h: Likewise. --- include/unistd.h | 6 +++++- sysdeps/generic/dl-unistd.h | 30 ++++++++++++++++++++++++++++++ sysdeps/mach/hurd/dl-unistd.h | 25 +++++++++++++++++++++++++ 3 files changed, 60 insertions(+), 1 deletion(-) create mode 100644 sysdeps/generic/dl-unistd.h create mode 100644 sysdeps/mach/hurd/dl-unistd.h diff --git a/include/unistd.h b/include/unistd.h index cb416378a1..5152f64f91 100644 --- 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 +# endif + __END_DECLS # endif diff --git a/sysdeps/generic/dl-unistd.h b/sysdeps/generic/dl-unistd.h new file mode 100644 index 0000000000..98da6720f0 --- /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 + . */ + +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 index 0000000000..1777a21f06 --- /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 + . */ + +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; -- 2.43.5