freebsd-skq/lib/libc/iconv/iconv_set_relocation_prefix.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2013 Peter Wemm
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#include <sys/types.h>
#include <iconv.h>
#include "iconv-internal.h"

void
iconv_set_relocation_prefix(const char *a, const char *b)
{
	return __bsd_iconv_set_relocation_prefix(a, b);
}
Attempt to move the POSIX iconv* symbols out of runtime linker space. FreeBSD systems usually implemented this as a third party module and our implementation hasn't played as nicely with the old way as it could have. To that end: * Rename the iconv* symbols in libc.so.7 to have a __bsd_ prefix. * Provide .symver compatability with existing 10.x+ binaries that referenced the iconv symbols. All existing binaries should work. * Like on Linux/glibc systems, add a libc_nonshared.a to the ldscript at /usr/lib/libc.so. * Move the "iconv*" wrapper symbols to libc_nonshared.a This should solve the runtime ambiguity about which symbols resolve to where. If you compile against the iconv in libc, your runtime dependencies will be unambiguous. Old 9.x libraries and binaries will always resolve against their libiconv.so.3 like they did on 9.x. They won't resolve against libc. Old 10.x binaries will be satisified by the .symver helpers. This should allow ports to selectively compile against the libiconv port if needed and it should behave without ambiguity now. Discussed with: kib 2013-11-17 22:52:17 +00:00			`/*-`
libc: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. 2017-11-25 17:12:48 +00:00			`* SPDX-License-Identifier: BSD-2-Clause-FreeBSD`
			`*`
Attempt to move the POSIX iconv* symbols out of runtime linker space. FreeBSD systems usually implemented this as a third party module and our implementation hasn't played as nicely with the old way as it could have. To that end: * Rename the iconv* symbols in libc.so.7 to have a __bsd_ prefix. * Provide .symver compatability with existing 10.x+ binaries that referenced the iconv symbols. All existing binaries should work. * Like on Linux/glibc systems, add a libc_nonshared.a to the ldscript at /usr/lib/libc.so. * Move the "iconv*" wrapper symbols to libc_nonshared.a This should solve the runtime ambiguity about which symbols resolve to where. If you compile against the iconv in libc, your runtime dependencies will be unambiguous. Old 9.x libraries and binaries will always resolve against their libiconv.so.3 like they did on 9.x. They won't resolve against libc. Old 10.x binaries will be satisified by the .symver helpers. This should allow ports to selectively compile against the libiconv port if needed and it should behave without ambiguity now. Discussed with: kib 2013-11-17 22:52:17 +00:00			`* Copyright (c) 2013 Peter Wemm`
			`* All rights reserved.`
			`*`
			`* Redistribution and use in source and binary forms, with or without`
			`* modification, are permitted provided that the following conditions`
			`* are met:`
			`* 1. Redistributions of source code must retain the above copyright`
			`* notice, this list of conditions and the following disclaimer.`
			`* 2. Redistributions in binary form must reproduce the above copyright`
			`* notice, this list of conditions and the following disclaimer in the`
			`* documentation and/or other materials provided with the distribution.`
			`*`
			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
			`* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
			`* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
			`* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE`
			`* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
			`* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
			`* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
			`* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
			`* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
			`* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
			`* SUCH DAMAGE.`
			`*`
			`* $FreeBSD$`
			`*/`

			`#include <sys/types.h>`
			`#include <iconv.h>`
			`#include "iconv-internal.h"`

			`void`
			`iconv_set_relocation_prefix(const char a, const char b)`
			`{`
			`return __bsd_iconv_set_relocation_prefix(a, b);`
			`}`