1 files changed, 50 insertions, 0 deletions
diff --git a/ext/SDBM_File/sdbm/util.c b/ext/SDBM_File/sdbm/util.c
new file mode 100644
index 0000000000..4b03d89f09
--- /dev/null
+++ b/ext/SDBM_File/sdbm/util.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#ifdef SDBM
+#include "sdbm.h"
+#else
+#include "ndbm.h"
+#endif
+
+void
+oops(s1, s2)
+register char *s1;
+register char *s2;
+{
+	extern int errno, sys_nerr;
+	extern char *sys_errlist[];
+	extern char *progname;
+
+	if (progname)
+		fprintf(stderr, "%s: ", progname);
+	fprintf(stderr, s1, s2);
+	if (errno > 0 && errno < sys_nerr)
+		fprintf(stderr, " (%s)", sys_errlist[errno]);
+	fprintf(stderr, "\n");
+	exit(1);
+}
+
+int
+okpage(pag)
+char *pag;
+{
+	register unsigned n;
+	register off;
+	register short *ino = (short *) pag;
+
+	if ((n = ino[0]) > PBLKSIZ / sizeof(short))
+		return 0;
+
+	if (!n)
+		return 1;
+
+	off = PBLKSIZ;
+	for (ino++; n; ino += 2) {
+		if (ino[0] > off || ino[1] > off ||
+		    ino[1] > ino[0])
+			return 0;
+		off = ino[1];
+		n -= 2;
+	}
+
+	return 1;
+}