glibc/string/basename.c
Joseph Myers cf06a4e357 Fix pathconf basename namespace (bug 18444).
pathconf (sysdeps/unix/sysv/linux/pathconf.c) uses basename.  But
pathconf is in POSIX back to 1990 while basename is only reserved with
external linkage in those standards including XPG functions.  This
patch fixes this namespace issue in the usual way, renaming basename
to __basename and making it into a weak alias.

Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).

	[BZ #18444]
	* string/basename.c (basename): Rename to __basename and define as
	weak alias of __basename.  Use libc_hidden_weak.
	* include/string.h (__basename): Declare.  Use libc_hidden_proto.
	* sysdeps/unix/sysv/linux/pathconf.c (distinguish_extX): Call
	__basename instead of basename.
	* conform/Makefile (test-xfail-POSIX2008/unistd.h/linknamespace):
	Remove variable.
	(test-xfail-XOPEN2K8/unistd.h/linknamespace): Likewise.
2015-05-22 17:09:36 +00:00

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1.0 KiB
C

/* Return the name-within-directory of a file name.
Copyright (C) 1996-2015 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/>. */
#include <string.h>
char *
__basename (const char *filename)
{
char *p = strrchr (filename, '/');
return p ? p + 1 : (char *) filename;
}
libc_hidden_def (__basename)
weak_alias (__basename, basename)
libc_hidden_weak (basename)