1 files changed, 27 insertions, 0 deletions

diff --git a/openbsd-compat/bsd-getpagesize.c b/openbsd-compat/bsd-getpagesize.c
new file mode 100644
index 0000000..903bfc3
--- /dev/null
+++ b/openbsd-compat/bsd-getpagesize.c
@@ -0,0 +1,27 @@
+/* Placed in the public domain */
+
+#include "openbsd-compat.h"
+
+#if !defined(HAVE_GETPAGESIZE)
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <limits.h>
+
+int
+getpagesize(void)
+{
+#if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
+        long r = sysconf(_SC_PAGESIZE);
+        if (r > 0 && r < INT_MAX)
+                return (int)r;
+#endif
+        /*
+         * This is at the lower end of common values and appropriate for
+         * our current use of getpagesize() in recallocarray().
+         */
+        return 4096;
+}
+
+#endif /* !defined(HAVE_GETPAGESIZE) */