1 files changed, 35 insertions, 0 deletions
diff --git a/busybox/libbb/xgetlarg.c b/busybox/libbb/xgetlarg.c
new file mode 100644
index 0000000..56fb60e
--- /dev/null
+++ b/busybox/libbb/xgetlarg.c
@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2003-2004 Erik Andersen <andersen@codepoet.org>
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+#include <assert.h>
+#include <ctype.h>
+
+#include "busybox.h"
+
+extern long bb_xgetlarg(const char *arg, int base, long lower, long upper)
+{
+	long result;
+	char *endptr;
+	int errno_save = errno;
+
+	assert(arg!=NULL);
+
+	/* Don't allow leading whitespace. */
+	if ((isspace)(*arg)) {	/* Use an actual funciton call for minimal size. */
+		bb_show_usage();
+	}
+
+	errno = 0;
+	result = strtol(arg, &endptr, base);
+	if (errno != 0 || *endptr!='\0' || endptr==arg || result < lower || result > upper)
+		bb_show_usage();
+	errno = errno_save;
+	return result;
+}