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/* dctrl-tools - Debian control file inspection tools
Copyright © 2004 Antti-Juhani Kaijanaho
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef ALIGN_H
#define ALIGN_H
#include <assert.h>
#include <stdbool.h>
#include <unistd.h>
#define MAX_ALIGN 8
static inline
size_t get_pagesize(void)
{
static size_t pagesize = 0;
if (pagesize == 0) {
pagesize = (size_t) sysconf(_SC_PAGESIZE);
}
assert(pagesize != 0);
return pagesize;
}
static inline
size_t align(size_t offset, size_t alignment, bool ceil)
{
return (offset / alignment + (ceil && offset % alignment != 0))
* alignment;
}
static inline
size_t pg_align(size_t offset, bool ceil)
{
return align(offset, get_pagesize(), ceil);
}
#endif /* ALIGN_H */
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