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Assume O_DIRECTORY for opendir

This patch assumes O_DIRECTORY works as defined by POSIX on opendir
implementation (aligning with other glibc code, for instance pwd).  This
allows remove both the fallback code to handle system with missing or
broken O_DIRECTORY along with the Linux specific opendir.c which just
advertise the working flag.

Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
powerpc64le-linux-gnu.

	* sysdeps/posix/opendir.c (o_directory_works, tryopen_o_directory):
	Remove definitions.
	(opendir_oflags): Use O_DIRECTORY regardless.
	(__opendir, __opendirat): Remove need_isdir_precheck usage.
	* sysdeps/unix/sysv/linux/opendir.c: Remove file.
This commit is contained in:
Adhemerval Zanella
2018-03-01 15:55:25 -03:00
parent 57408435ad
commit 8e4754ed7e
3 changed files with 12 additions and 122 deletions

View File

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/* Copyright (C) 2000-2018 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/>. */
#define O_DIRECTORY_WORKS 1
#include <sysdeps/posix/opendir.c>