49 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * File: linux/nfsacl.h4 *5 * (C) 2003 Andreas Gruenbacher <agruen@suse.de>6 */7#ifndef __LINUX_NFSACL_H8#define __LINUX_NFSACL_H9 10 11#include <linux/posix_acl.h>12#include <linux/sunrpc/xdr.h>13#include <uapi/linux/nfsacl.h>14 15/* Maximum number of ACL entries over NFS */16#define NFS_ACL_MAX_ENTRIES 102417 18#define NFSACL_MAXWORDS (2*(2+3*NFS_ACL_MAX_ENTRIES))19#define NFSACL_MAXPAGES ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \20 >> PAGE_SHIFT)21 22#define NFS_ACL_MAX_ENTRIES_INLINE (5)23#define NFS_ACL_INLINE_BUFSIZE ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)24 25static inline unsigned int26nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)27{28 unsigned int w = 16;29 w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;30 if (acl_default)31 w += max((int)acl_default->a_count, 4) * 12;32 return w;33}34 35extern int36nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,37 struct posix_acl *acl, int encode_entries, int typeflag);38extern int39nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,40 struct posix_acl **pacl);41extern bool42nfs_stream_decode_acl(struct xdr_stream *xdr, unsigned int *aclcnt,43 struct posix_acl **pacl);44extern bool45nfs_stream_encode_acl(struct xdr_stream *xdr, struct inode *inode,46 struct posix_acl *acl, int encode_entries, int typeflag);47 48#endif /* __LINUX_NFSACL_H */49