include/linux/nfsacl.h

   1 /*
   2  * File: linux/nfsacl.h
   3  *
   4  * (C) 2003 Andreas Gruenbacher <agruen@suse.de>
   5  */
   6 #ifndef __LINUX_NFSACL_H
   7 #define __LINUX_NFSACL_H
   8
   9
  10 #include <linux/posix_acl.h>
  11 #include <linux/sunrpc/xdr.h>
  12 #include <uapi/linux/nfsacl.h>
  13
  14 /* Maximum number of ACL entries over NFS */
  15 #define NFS_ACL_MAX_ENTRIES     1024
  16
  17 #define NFSACL_MAXWORDS         (2*(2+3*NFS_ACL_MAX_ENTRIES))
  18 #define NFSACL_MAXPAGES         ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
  19                                  >> PAGE_SHIFT)
  20
  21 #define NFS_ACL_MAX_ENTRIES_INLINE      (5)
  22 #define NFS_ACL_INLINE_BUFSIZE  ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
  23
  24 static inline unsigned int
  25 nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
  26 {
  27         unsigned int w = 16;
  28         w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
  29         if (acl_default)
  30                 w += max((int)acl_default->a_count, 4) * 12;
  31         return w;
  32 }
  33
  34 extern int
  35 nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
  36               struct posix_acl *acl, int encode_entries, int typeflag);
  37 extern int
  38 nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
  39               struct posix_acl **pacl);
  40
  41 #endif  /* __LINUX_NFSACL_H */