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-rw-r--r--lib/get_gid.c31
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;
+}
+