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Add memalign(3), mostly for glibc compatibility.

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Reviewed by:	emaste, imp (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D24307
This commit is contained in:
Konstantin Belousov 2020-05-14 21:12:08 +00:00
parent 0532a7a2df
commit dcc6ef1644
4 changed files with 45 additions and 0 deletions
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3
include/malloc_np.h
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@ -122,6 +122,9 @@ size_t __sallocx(const void *ptr, int flags);
void __dallocx(void *ptr, int flags);
void __sdallocx(void *ptr, size_t size, int flags);
size_t __nallocx(size_t size, int flags);
void *memalign(size_t, size_t) __malloc_like __alloc_align(1)
__alloc_size(2);
__END_DECLS
#undef __MyBool

1
lib/libc/gen/Makefile.inc
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@ -98,6 +98,7 @@ SRCS+= __getosreldate.c \
libc_dlopen.c \
lockf.c \
lrand48.c \
memalign.c \
mrand48.c \
nftw.c \
nftw-compat11.c \

1
lib/libc/gen/Symbol.map
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@ -423,6 +423,7 @@ FBSD_1.5 {
};
FBSD_1.6 {
memalign;
sigandset;
sigisemptyset;
sigorset;

40
lib/libc/gen/memalign.c Normal file
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@ -0,0 +1,40 @@
/*-
* Copyright (c) 2020 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Konstantin Belousov
* under sponsorship from the FreeBSD Foundation.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <stdlib.h>
void *
memalign(size_t align, size_t size)
{
return (aligned_alloc(align, roundup(size, align)));
}