From 38acf35697c1bca396dedf7139995e6d0d4dd117 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 6 Jan 2016 11:28:04 -0800 Subject: Mark ld.so internal mmap functions hidden in ld.so Since ld.so internal mmap functions are only used internally in ld.so, they can be made hidden. Don't hide __mmap on Hurd, since __mmap in ld.so will be preempted by the one in libc.so after bootstrap. [BZ #19122] * include/sys/mman.h [IS_IN (rtld)]: Include . * sysdeps/generic/dl-mman.h: New file. * sysdeps/mach/hurd/dl-mman.h: Likewise. --- ChangeLog | 7 +++++++ include/sys/mman.h | 4 ++++ sysdeps/generic/dl-mman.h | 22 ++++++++++++++++++++++ sysdeps/mach/hurd/dl-mman.h | 23 +++++++++++++++++++++++ 4 files changed, 56 insertions(+) create mode 100644 sysdeps/generic/dl-mman.h create mode 100644 sysdeps/mach/hurd/dl-mman.h diff --git a/ChangeLog b/ChangeLog index 2ad1b5a308..6c7fef4240 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2016-01-05 H.J. Lu + + [BZ #19122] + * include/sys/mman.h [IS_IN (rtld)]: Include . + * sysdeps/generic/dl-mman.h: New file. + * sysdeps/mach/hurd/dl-mman.h: Likewise. + 2016-01-05 Joseph Myers * manual/texinfo.tex: Update to version 2016-01-04.21 with diff --git a/include/sys/mman.h b/include/sys/mman.h index fd125ecb9c..7026f69f42 100644 --- a/include/sys/mman.h +++ b/include/sys/mman.h @@ -16,6 +16,10 @@ libc_hidden_proto (__madvise) /* This one is Linux specific. */ extern void *__mremap (void *__addr, size_t __old_len, size_t __new_len, int __flags, ...); + +# if IS_IN (rtld) +# include +# endif #endif #endif diff --git a/sysdeps/generic/dl-mman.h b/sysdeps/generic/dl-mman.h new file mode 100644 index 0000000000..9087218508 --- /dev/null +++ b/sysdeps/generic/dl-mman.h @@ -0,0 +1,22 @@ +/* Functions with hidden attribute internal to ld.so, which are declared + in include/sys/mman.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 (__mmap) __mmap attribute_hidden; +extern __typeof (__mprotect) __mprotect attribute_hidden; +extern __typeof (__munmap) __munmap attribute_hidden; diff --git a/sysdeps/mach/hurd/dl-mman.h b/sysdeps/mach/hurd/dl-mman.h new file mode 100644 index 0000000000..f9d7996b6c --- /dev/null +++ b/sysdeps/mach/hurd/dl-mman.h @@ -0,0 +1,23 @@ +/* Functions with hidden attribute internal to ld.so, which are declared + in include/sys/mman.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 + . */ + +/* Can't hide __mmap on Hurd, since __mmap in ld.so will be preempted by + the one in libc.so after bootstrap. */ +extern __typeof (__mprotect) __mprotect attribute_hidden; +extern __typeof (__munmap) __munmap attribute_hidden; -- cgit 1.4.1