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Linux/include/linux/nfsacl.h

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  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 */
 42 

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