// SPDX-License-Identifier: BSD-3-Clause /* * linux/net/sunrpc/auth_gss/auth_gss_internal.h * * Internal definitions for RPCSEC_GSS client authentication * * Copyright (c) 2000 The Regents of the University of Michigan. * All rights reserved. * */ #include <linux/err.h> #include <linux/string.h> #include <linux/sunrpc/xdr.h> static inline const void * simple_get_bytes(const void *p, const void *end, void *res, size_t len) { const void *q = (const void *)((const char *)p + len); if (unlikely(q > end || q < p)) return ERR_PTR(-EFAULT); memcpy(res, p, len); return q; } static inline const void * simple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) { const void *q; unsigned int len; p = simple_get_bytes(p, end, &len, sizeof(len)); if (IS_ERR(p)) return p; q = (const void *)((const char *)p + len); if (unlikely(q > end || q < p)) return ERR_PTR(-EFAULT); if (len) { dest->data = kmemdup(p, len, GFP_KERNEL); if (unlikely(dest->data == NULL)) return ERR_PTR(-ENOMEM); } else dest->data = NULL; dest->len = len; return q; }