/* posix_memalign for uClibc * * Copyright (C) 1996-2002, 2003, 2004, 2005 Free Software Foundation, Inc. * Copyright (C) 2005 by Erik Andersen <andersen@uclibc.org> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Library General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program 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 Library General Public License * for more details. * * You should have received a copy of the GNU Library General Public License * along with this program; see the file COPYING.LIB. If not, see * <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include <malloc.h> #include <sys/types.h> #include <errno.h> #include <sys/param.h> int posix_memalign(void **memptr, size_t alignment, size_t size) { /* Make sure alignment is correct. */ if (alignment % sizeof(void *) != 0) /* Skip these checks because the memalign() func does them for us || !powerof2(alignment / sizeof(void *)) != 0 || alignment == 0 */ return EINVAL; void *mem = memalign(alignment, size); if (mem != NULL) { *memptr = mem; return 0; } else return ENOMEM; }