xref: /freebsd/contrib/libfido2/openbsd-compat/bsd-getpagesize.c (revision 0afa8e065e14bb8fd338d75690e0238c00167d40) 
1 /* Placed in the public domain */
2 
3 #include "openbsd-compat.h"
4 
5 #if !defined(HAVE_GETPAGESIZE)
6 
7 #ifdef HAVE_UNISTD_H
8 #include <unistd.h>
9 #endif
10 #include <limits.h>
11 
12 int
getpagesize(void)13 getpagesize(void)
14 {
15 #if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
16 	long r = sysconf(_SC_PAGESIZE);
17 	if (r > 0 && r < INT_MAX)
18 		return (int)r;
19 #endif
20 	/*
21 	 * This is at the lower end of common values and appropriate for
22 	 * our current use of getpagesize() in recallocarray().
23 	 */
24 	return 4096;
25 }
26 
27 #endif /* !defined(HAVE_GETPAGESIZE) */
28