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Date: Fri, 23 Oct 2015 20:41:53 +0200 From: Andreas Gruenbacher <agruenba@...hat.com> To: Alexander Viro <viro@...iv.linux.org.uk>, "Theodore Ts'o" <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca>, "J. Bruce Fields" <bfields@...ldses.org>, Jeff Layton <jlayton@...chiereds.net>, Trond Myklebust <trond.myklebust@...marydata.com>, Anna Schumaker <anna.schumaker@...app.com>, Dave Chinner <david@...morbit.com>, linux-ext4@...r.kernel.org, xfs@....sgi.com, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org, linux-api@...r.kernel.org Cc: Andreas Gruenbacher <agruenba@...hat.com> Subject: [PATCH v12 40/49] nfsd: Add support for unmapped richace identifiers Add support for encoding unmapped identifiers in richacl entries: local filesystems are not usually supposed to store unmapped identifiers, but allowing that for debugging purposes can be useful; for that, nfsd must also be able to encode them. Signed-off-by: Andreas Gruenbacher <agruenba@...hat.com> --- fs/nfsd/acl.h | 2 +- fs/nfsd/nfs4acl.c | 17 +++++++++++------ fs/nfsd/nfs4xdr.c | 4 ++-- 3 files changed, 14 insertions(+), 9 deletions(-) diff --git a/fs/nfsd/acl.h b/fs/nfsd/acl.h index d73c664..4935144 100644 --- a/fs/nfsd/acl.h +++ b/fs/nfsd/acl.h @@ -51,7 +51,7 @@ struct svc_rqst; __be32 nfsd4_decode_ace_who(struct richace *ace, struct svc_rqst *rqstp, char *who, u32 len); __be32 nfsd4_encode_ace_who(struct xdr_stream *xdr, struct svc_rqst *rqstp, - struct richace *ace); + struct richace *ace, struct richacl *acl); struct richacl *nfsd4_get_acl(struct svc_rqst *rqstp, struct dentry *dentry); __be32 nfsd4_set_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index f017a76..3cc83fd 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -885,17 +885,22 @@ __be32 nfsd4_decode_ace_who(struct richace *ace, struct svc_rqst *rqstp, } __be32 nfsd4_encode_ace_who(struct xdr_stream *xdr, struct svc_rqst *rqstp, - struct richace *ace) + struct richace *ace, struct richacl *acl) { - if (ace->e_flags & RICHACE_SPECIAL_WHO) { - unsigned int special_id = ace->e_id.special; + if (ace->e_flags & (RICHACE_SPECIAL_WHO | RICHACE_UNMAPPED_WHO)) { const char *who; unsigned int len; __be32 *p; - if (!nfs4acl_special_id_to_who(special_id, &who, &len)) { - WARN_ON_ONCE(1); - return nfserr_serverfault; + if (ace->e_flags & RICHACE_SPECIAL_WHO) { + if (!nfs4acl_special_id_to_who(ace->e_id.special, + &who, &len)) { + WARN_ON_ONCE(1); + return nfserr_serverfault; + } + } else { + who = richace_unmapped_identifier(ace, acl); + len = strlen(who); } p = xdr_reserve_space(xdr, len + 4); if (!p) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 33d028c..8728d0e 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2325,7 +2325,7 @@ static __be32 nfsd4_encode_acl_entries(struct xdr_stream *xdr, { __be32 *p; - flags_mask &= ~RICHACE_SPECIAL_WHO; + flags_mask &= ~(RICHACE_SPECIAL_WHO | RICHACE_UNMAPPED_WHO); p = xdr_reserve_space(xdr, 4); if (!p) @@ -2347,7 +2347,7 @@ static __be32 nfsd4_encode_acl_entries(struct xdr_stream *xdr, *p++ = cpu_to_be32(ace->e_type); *p++ = cpu_to_be32(ace->e_flags & flags_mask); *p++ = cpu_to_be32(ace->e_mask & ace_mask); - status = nfsd4_encode_ace_who(xdr, rqstp, ace); + status = nfsd4_encode_ace_who(xdr, rqstp, ace, acl); if (status) return status; } -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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