fs/nfsd/acl.h

   1 /*
   2  *  Common NFSv4 ACL handling definitions.
   3  *
   4  *  Copyright (c) 2002 The Regents of the University of Michigan.
   5  *  All rights reserved.
   6  *
   7  *  Marius Aamodt Eriksen <marius@umich.edu>
   8  *
   9  *  Redistribution and use in source and binary forms, with or without
  10  *  modification, are permitted provided that the following conditions
  11  *  are met:
  12  *
  13  *  1. Redistributions of source code must retain the above copyright
  14  *     notice, this list of conditions and the following disclaimer.
  15  *  2. Redistributions in binary form must reproduce the above copyright
  16  *     notice, this list of conditions and the following disclaimer in the
  17  *     documentation and/or other materials provided with the distribution.
  18  *  3. Neither the name of the University nor the names of its
  19  *     contributors may be used to endorse or promote products derived
  20  *     from this software without specific prior written permission.
  21  *
  22  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  23  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  25  *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  29  *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef LINUX_NFS4_ACL_H
  36 #define LINUX_NFS4_ACL_H
  37
  38 struct nfs4_acl;
  39 struct svc_fh;
  40 struct svc_rqst;
  41
  42 /*
  43  * Maximum ACL we'll accept from a client; chosen (somewhat
  44  * arbitrarily) so that kmalloc'ing the ACL shouldn't require a
  45  * high-order allocation.  This allows 204 ACEs on x86_64:
  46  */
  47 #define NFS4_ACL_MAX ((PAGE_SIZE - sizeof(struct nfs4_acl)) \
  48                         / sizeof(struct nfs4_ace))
  49
  50 int nfs4_acl_bytes(int entries);
  51 int nfs4_acl_get_whotype(char *, u32);
  52 __be32 nfs4_acl_write_who(struct xdr_stream *xdr, int who);
  53
  54 int nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
  55                 struct nfs4_acl **acl);
  56 __be32 nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
  57                 struct nfs4_acl *acl);
  58
  59 #endif /* LINUX_NFS4_ACL_H */