1 files changed, 31 insertions, 0 deletions
diff --git a/lib/get_gid.c b/lib/get_gid.c
new file mode 100644
index 0000000..cbcd6f4
--- /dev/null
+++ b/lib/get_gid.c
@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+
+int get_gid (const char *gidstr, gid_t *gid)
+{
+	long long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoll (gidstr, &endptr, 10);
+	if (   ('\0' == *gidstr)
+	    || ('\0' != *endptr)
+	    || (ERANGE == errno)
+	    || (/*@+longintegral@*/val != (gid_t)val)/*@=longintegral@*/) {
+		return 0;
+	}
+
+	*gid = (gid_t)val;
+	return 1;
+}
+