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nfs: return negative error value from nfs{,4}_stat_to_errno
All use sites for nfs{,4}_stat_to_errno negate their return value.
It's more efficient to return a negative error from the stat_to_errno convertors
rather than negating its return value everywhere. This also produces slightly
smaller code.
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Benny Halevy
Trond Myklebust
parent
d11d10cc05
commit
856dff3d38
@ -267,7 +267,7 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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p = xdr_decode_fattr(p, res->fattr);
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count = ntohl(*p++);
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@ -432,7 +432,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
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__be32 *end, *entry, *kaddr;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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hdrlen = (u8 *) p - (u8 *) iov->iov_base;
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if (iov->iov_len < hdrlen) {
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@ -537,7 +537,7 @@ nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
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int status;
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if ((status = ntohl(*p++)) != 0)
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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return status;
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}
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@ -551,7 +551,7 @@ nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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xdr_decode_fattr(p, fattr);
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return 0;
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}
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@ -566,7 +566,7 @@ nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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p = xdr_decode_fhandle(p, res->fh);
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xdr_decode_fattr(p, res->fattr);
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return 0;
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@ -604,7 +604,7 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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/* Convert length of symlink */
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len = ntohl(*p++);
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if (len >= rcvbuf->page_len) {
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@ -653,7 +653,7 @@ nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->tsize = ntohl(*p++);
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res->bsize = ntohl(*p++);
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@ -672,39 +672,39 @@ static struct {
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int errno;
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} nfs_errtbl[] = {
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{ NFS_OK, 0 },
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{ NFSERR_PERM, EPERM },
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{ NFSERR_NOENT, ENOENT },
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{ NFSERR_IO, errno_NFSERR_IO },
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{ NFSERR_NXIO, ENXIO },
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/* { NFSERR_EAGAIN, EAGAIN }, */
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{ NFSERR_ACCES, EACCES },
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{ NFSERR_EXIST, EEXIST },
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{ NFSERR_XDEV, EXDEV },
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{ NFSERR_NODEV, ENODEV },
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{ NFSERR_NOTDIR, ENOTDIR },
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{ NFSERR_ISDIR, EISDIR },
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{ NFSERR_INVAL, EINVAL },
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{ NFSERR_FBIG, EFBIG },
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{ NFSERR_NOSPC, ENOSPC },
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{ NFSERR_ROFS, EROFS },
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{ NFSERR_MLINK, EMLINK },
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{ NFSERR_NAMETOOLONG, ENAMETOOLONG },
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{ NFSERR_NOTEMPTY, ENOTEMPTY },
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{ NFSERR_DQUOT, EDQUOT },
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{ NFSERR_STALE, ESTALE },
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{ NFSERR_REMOTE, EREMOTE },
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{ NFSERR_PERM, -EPERM },
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{ NFSERR_NOENT, -ENOENT },
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{ NFSERR_IO, -errno_NFSERR_IO},
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{ NFSERR_NXIO, -ENXIO },
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/* { NFSERR_EAGAIN, -EAGAIN }, */
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{ NFSERR_ACCES, -EACCES },
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{ NFSERR_EXIST, -EEXIST },
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{ NFSERR_XDEV, -EXDEV },
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{ NFSERR_NODEV, -ENODEV },
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{ NFSERR_NOTDIR, -ENOTDIR },
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{ NFSERR_ISDIR, -EISDIR },
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{ NFSERR_INVAL, -EINVAL },
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{ NFSERR_FBIG, -EFBIG },
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{ NFSERR_NOSPC, -ENOSPC },
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{ NFSERR_ROFS, -EROFS },
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{ NFSERR_MLINK, -EMLINK },
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{ NFSERR_NAMETOOLONG, -ENAMETOOLONG },
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{ NFSERR_NOTEMPTY, -ENOTEMPTY },
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{ NFSERR_DQUOT, -EDQUOT },
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{ NFSERR_STALE, -ESTALE },
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{ NFSERR_REMOTE, -EREMOTE },
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#ifdef EWFLUSH
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{ NFSERR_WFLUSH, EWFLUSH },
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{ NFSERR_WFLUSH, -EWFLUSH },
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#endif
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{ NFSERR_BADHANDLE, EBADHANDLE },
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{ NFSERR_NOT_SYNC, ENOTSYNC },
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{ NFSERR_BAD_COOKIE, EBADCOOKIE },
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{ NFSERR_NOTSUPP, ENOTSUPP },
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{ NFSERR_TOOSMALL, ETOOSMALL },
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{ NFSERR_SERVERFAULT, ESERVERFAULT },
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{ NFSERR_BADTYPE, EBADTYPE },
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{ NFSERR_JUKEBOX, EJUKEBOX },
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{ -1, EIO }
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{ NFSERR_BADHANDLE, -EBADHANDLE },
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{ NFSERR_NOT_SYNC, -ENOTSYNC },
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{ NFSERR_BAD_COOKIE, -EBADCOOKIE },
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{ NFSERR_NOTSUPP, -ENOTSUPP },
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{ NFSERR_TOOSMALL, -ETOOSMALL },
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{ NFSERR_SERVERFAULT, -ESERVERFAULT },
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{ NFSERR_BADTYPE, -EBADTYPE },
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{ NFSERR_JUKEBOX, -EJUKEBOX },
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{ -1, -EIO }
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};
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/*
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@ -515,7 +515,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
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/* Decode post_op_attrs */
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p = xdr_decode_post_op_attr(p, res->dir_attr);
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if (status)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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/* Decode verifier cookie */
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if (res->verf) {
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res->verf[0] = *p++;
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@ -751,7 +751,7 @@ nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
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int status;
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if ((status = ntohl(*p++)))
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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xdr_decode_fattr(p, fattr);
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return 0;
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}
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@ -766,7 +766,7 @@ nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
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int status;
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if ((status = ntohl(*p++)))
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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xdr_decode_wcc_data(p, fattr);
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return status;
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}
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@ -786,7 +786,7 @@ nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
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int status;
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if ((status = ntohl(*p++))) {
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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} else {
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if (!(p = xdr_decode_fhandle(p, res->fh)))
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return -errno_NFSERR_IO;
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@ -806,7 +806,7 @@ nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
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p = xdr_decode_post_op_attr(p, res->fattr);
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if (status)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->access = ntohl(*p++);
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return 0;
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}
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@ -843,7 +843,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
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p = xdr_decode_post_op_attr(p, fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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/* Convert length of symlink */
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len = ntohl(*p++);
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@ -891,7 +891,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
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p = xdr_decode_post_op_attr(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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/* Decode reply count and EOF flag. NFSv3 is somewhat redundant
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* in that it puts the count both in the res struct and in the
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@ -941,7 +941,7 @@ nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
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p = xdr_decode_wcc_data(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->count = ntohl(*p++);
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res->verf->committed = (enum nfs3_stable_how)ntohl(*p++);
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@ -972,7 +972,7 @@ nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
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res->fattr->valid = 0;
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}
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} else {
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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}
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p = xdr_decode_wcc_data(p, res->dir_attr);
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return status;
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@ -987,7 +987,7 @@ nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res)
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int status;
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if ((status = ntohl(*p++)) != 0)
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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p = xdr_decode_wcc_data(p, res->fromattr);
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p = xdr_decode_wcc_data(p, res->toattr);
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return status;
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@ -1002,7 +1002,7 @@ nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
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int status;
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if ((status = ntohl(*p++)) != 0)
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status = -nfs_stat_to_errno(status);
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status = nfs_stat_to_errno(status);
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p = xdr_decode_post_op_attr(p, res->fattr);
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p = xdr_decode_wcc_data(p, res->dir_attr);
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return status;
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@ -1020,7 +1020,7 @@ nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
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p = xdr_decode_post_op_attr(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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p = xdr_decode_hyper(p, &res->tbytes);
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p = xdr_decode_hyper(p, &res->fbytes);
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@ -1045,7 +1045,7 @@ nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
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p = xdr_decode_post_op_attr(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->rtmax = ntohl(*p++);
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res->rtpref = ntohl(*p++);
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@ -1073,7 +1073,7 @@ nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
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p = xdr_decode_post_op_attr(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->max_link = ntohl(*p++);
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res->max_namelen = ntohl(*p++);
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@ -1092,7 +1092,7 @@ nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
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status = ntohl(*p++);
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p = xdr_decode_wcc_data(p, res->fattr);
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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res->verf->verifier[0] = *p++;
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res->verf->verifier[1] = *p++;
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@ -1114,7 +1114,7 @@ nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
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int err, base;
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if (status != 0)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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p = xdr_decode_post_op_attr(p, res->fattr);
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res->mask = ntohl(*p++);
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if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
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@ -1141,7 +1141,7 @@ nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
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int status = ntohl(*p++);
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if (status)
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return -nfs_stat_to_errno(status);
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return nfs_stat_to_errno(status);
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xdr_decode_post_op_attr(p, fattr);
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return 0;
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}
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@ -2241,7 +2241,7 @@ static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
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}
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READ32(nfserr);
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if (nfserr != NFS_OK)
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return -nfs4_stat_to_errno(nfserr);
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return nfs4_stat_to_errno(nfserr);
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return 0;
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}
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@ -3760,7 +3760,7 @@ static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
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READ_BUF(len);
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return -NFSERR_CLID_INUSE;
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} else
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return -nfs4_stat_to_errno(nfserr);
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return nfs4_stat_to_errno(nfserr);
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return 0;
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}
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@ -4422,7 +4422,7 @@ static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinf
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if (!status)
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status = decode_fsinfo(&xdr, fsinfo);
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if (!status)
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status = -nfs4_stat_to_errno(hdr.status);
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status = nfs4_stat_to_errno(hdr.status);
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return status;
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}
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@ -4512,7 +4512,7 @@ static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
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if (!status)
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status = decode_setclientid(&xdr, clp);
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if (!status)
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status = -nfs4_stat_to_errno(hdr.status);
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status = nfs4_stat_to_errno(hdr.status);
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return status;
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}
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@ -4534,7 +4534,7 @@ static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, str
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if (!status)
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status = decode_fsinfo(&xdr, fsinfo);
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if (!status)
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status = -nfs4_stat_to_errno(hdr.status);
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status = nfs4_stat_to_errno(hdr.status);
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return status;
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}
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@ -4644,42 +4644,42 @@ static struct {
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int errno;
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} nfs_errtbl[] = {
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{ NFS4_OK, 0 },
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{ NFS4ERR_PERM, EPERM },
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{ NFS4ERR_NOENT, ENOENT },
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{ NFS4ERR_IO, errno_NFSERR_IO },
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{ NFS4ERR_NXIO, ENXIO },
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{ NFS4ERR_ACCESS, EACCES },
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{ NFS4ERR_EXIST, EEXIST },
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{ NFS4ERR_XDEV, EXDEV },
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{ NFS4ERR_NOTDIR, ENOTDIR },
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{ NFS4ERR_ISDIR, EISDIR },
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{ NFS4ERR_INVAL, EINVAL },
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{ NFS4ERR_FBIG, EFBIG },
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{ NFS4ERR_NOSPC, ENOSPC },
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{ NFS4ERR_ROFS, EROFS },
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{ NFS4ERR_MLINK, EMLINK },
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{ NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
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{ NFS4ERR_NOTEMPTY, ENOTEMPTY },
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{ NFS4ERR_DQUOT, EDQUOT },
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{ NFS4ERR_STALE, ESTALE },
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{ NFS4ERR_BADHANDLE, EBADHANDLE },
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{ NFS4ERR_BADOWNER, EINVAL },
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{ NFS4ERR_BADNAME, EINVAL },
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{ NFS4ERR_BAD_COOKIE, EBADCOOKIE },
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{ NFS4ERR_NOTSUPP, ENOTSUPP },
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{ NFS4ERR_TOOSMALL, ETOOSMALL },
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{ NFS4ERR_SERVERFAULT, ESERVERFAULT },
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{ NFS4ERR_BADTYPE, EBADTYPE },
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{ NFS4ERR_LOCKED, EAGAIN },
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{ NFS4ERR_RESOURCE, EREMOTEIO },
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{ NFS4ERR_SYMLINK, ELOOP },
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{ NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
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{ NFS4ERR_DEADLOCK, EDEADLK },
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{ NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
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{ NFS4ERR_PERM, -EPERM },
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{ NFS4ERR_NOENT, -ENOENT },
|
||||
{ NFS4ERR_IO, -errno_NFSERR_IO},
|
||||
{ NFS4ERR_NXIO, -ENXIO },
|
||||
{ NFS4ERR_ACCESS, -EACCES },
|
||||
{ NFS4ERR_EXIST, -EEXIST },
|
||||
{ NFS4ERR_XDEV, -EXDEV },
|
||||
{ NFS4ERR_NOTDIR, -ENOTDIR },
|
||||
{ NFS4ERR_ISDIR, -EISDIR },
|
||||
{ NFS4ERR_INVAL, -EINVAL },
|
||||
{ NFS4ERR_FBIG, -EFBIG },
|
||||
{ NFS4ERR_NOSPC, -ENOSPC },
|
||||
{ NFS4ERR_ROFS, -EROFS },
|
||||
{ NFS4ERR_MLINK, -EMLINK },
|
||||
{ NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
|
||||
{ NFS4ERR_NOTEMPTY, -ENOTEMPTY },
|
||||
{ NFS4ERR_DQUOT, -EDQUOT },
|
||||
{ NFS4ERR_STALE, -ESTALE },
|
||||
{ NFS4ERR_BADHANDLE, -EBADHANDLE },
|
||||
{ NFS4ERR_BADOWNER, -EINVAL },
|
||||
{ NFS4ERR_BADNAME, -EINVAL },
|
||||
{ NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
|
||||
{ NFS4ERR_NOTSUPP, -ENOTSUPP },
|
||||
{ NFS4ERR_TOOSMALL, -ETOOSMALL },
|
||||
{ NFS4ERR_SERVERFAULT, -ESERVERFAULT },
|
||||
{ NFS4ERR_BADTYPE, -EBADTYPE },
|
||||
{ NFS4ERR_LOCKED, -EAGAIN },
|
||||
{ NFS4ERR_RESOURCE, -EREMOTEIO },
|
||||
{ NFS4ERR_SYMLINK, -ELOOP },
|
||||
{ NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
|
||||
{ NFS4ERR_DEADLOCK, -EDEADLK },
|
||||
{ NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
|
||||
* to be handled by a
|
||||
* middle-layer.
|
||||
*/
|
||||
{ -1, EIO }
|
||||
{ -1, -EIO }
|
||||
};
|
||||
|
||||
/*
|
||||
@ -4696,14 +4696,14 @@ nfs4_stat_to_errno(int stat)
|
||||
}
|
||||
if (stat <= 10000 || stat > 10100) {
|
||||
/* The server is looney tunes. */
|
||||
return ESERVERFAULT;
|
||||
return -ESERVERFAULT;
|
||||
}
|
||||
/* If we cannot translate the error, the recovery routines should
|
||||
* handle it.
|
||||
* Note: remaining NFSv4 error codes have values > 10000, so should
|
||||
* not conflict with native Linux error codes.
|
||||
*/
|
||||
return stat;
|
||||
return -stat;
|
||||
}
|
||||
|
||||
#define PROC(proc, argtype, restype) \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user