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 #define NFS_ACL_PROGRAM 100227
  10
  11 #define ACLPROC2_GETACL         1
  12 #define ACLPROC2_SETACL         2
  13 #define ACLPROC2_GETATTR        3
  14 #define ACLPROC2_ACCESS         4
  15
  16 #define ACLPROC3_GETACL         1
  17 #define ACLPROC3_SETACL         2
  18
  19
  20 /* Flags for the getacl/setacl mode */
  21 #define NFS_ACL                 0x0001
  22 #define NFS_ACLCNT              0x0002
  23 #define NFS_DFACL               0x0004
  24 #define NFS_DFACLCNT            0x0008
  25
  26 /* Flag for Default ACL entries */
  27 #define NFS_ACL_DEFAULT         0x1000
  28
  29 #ifdef __KERNEL__
  30
  31 #include <linux/posix_acl.h>
  32 #include <linux/sunrpc/xdr.h>
  33
  34 /* Maximum number of ACL entries over NFS */
  35 #define NFS_ACL_MAX_ENTRIES     1024
  36
  37 #define NFSACL_MAXWORDS         (2*(2+3*NFS_ACL_MAX_ENTRIES))
  38 #define NFSACL_MAXPAGES         ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
  39                                  >> PAGE_SHIFT)
  40
  41 #define NFS_ACL_MAX_ENTRIES_INLINE      (5)
  42 #define NFS_ACL_INLINE_BUFSIZE  ((2*(2+3*NFS_ACL_MAX_ENTRIES_INLINE)) << 2)
  43
  44 static inline unsigned int
  45 nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
  46 {
  47         unsigned int w = 16;
  48         w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
  49         if (acl_default)
  50                 w += max((int)acl_default->a_count, 4) * 12;
  51         return w;
  52 }
  53
  54 extern unsigned int
  55 nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
  56               struct posix_acl *acl, int encode_entries, int typeflag);
  57 extern unsigned int
  58 nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
  59               struct posix_acl **pacl);
  60
  61 #endif /* __KERNEL__ */
  62 #endif  /* __LINUX_NFSACL_H */