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 42 #endif /* __LINUX_NFSACL_H */ 43