ddd1ea5636
This is a cosmetic change for now; no change in behavior. Note we're just depending on xdr_reserve_space to do the bounds checking for us, we're not really depending on its adjustment of iovec or xdr_buf lengths yet, as those are fixed up by as necessary after the fact by read-link operations and by nfs4svc_encode_compoundres. However we do have to update xdr->iov on read-like operations to prevent xdr_reserve_space from messing with the already-fixed-up length of the the head. When the attribute encoding fails partway through we have to undo the length adjustments made so far. We do it manually for now, but later patches will add an xdr_truncate_encode() helper to handle cases like this. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/*
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* Common NFSv4 ACL handling definitions.
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*
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* Copyright (c) 2002 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Marius Aamodt Eriksen <marius@umich.edu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef LINUX_NFS4_ACL_H
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#define LINUX_NFS4_ACL_H
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struct nfs4_acl;
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struct svc_fh;
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struct svc_rqst;
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/*
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* Maximum ACL we'll accept from a client; chosen (somewhat
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* arbitrarily) so that kmalloc'ing the ACL shouldn't require a
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* high-order allocation. This allows 204 ACEs on x86_64:
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*/
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#define NFS4_ACL_MAX ((PAGE_SIZE - sizeof(struct nfs4_acl)) \
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/ sizeof(struct nfs4_ace))
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struct nfs4_acl *nfs4_acl_new(int);
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int nfs4_acl_get_whotype(char *, u32);
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__be32 nfs4_acl_write_who(struct xdr_stream *xdr, int who);
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int nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry,
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struct nfs4_acl **acl);
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__be32 nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
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struct nfs4_acl *acl);
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#endif /* LINUX_NFS4_ACL_H */
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