1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * File: linux/nfsacl.h |
4 | * |
5 | * (C) 2003 Andreas Gruenbacher <agruen@suse.de> |
6 | */ |
7 | #ifndef __LINUX_NFSACL_H |
8 | #define __LINUX_NFSACL_H |
9 | |
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 1024 |
17 | |
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 | |
25 | static inline unsigned int |
26 | nfsacl_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 | |
35 | extern int |
36 | nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode, |
37 | struct posix_acl *acl, int encode_entries, int typeflag); |
38 | extern int |
39 | nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt, |
40 | struct posix_acl **pacl); |
41 | extern bool |
42 | nfs_stream_decode_acl(struct xdr_stream *xdr, unsigned int *aclcnt, |
43 | struct posix_acl **pacl); |
44 | extern bool |
45 | nfs_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 | |