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Diffstat (limited to 'fs/nfsd/nfs4proc.c')
-rw-r--r--fs/nfsd/nfs4proc.c102
1 files changed, 71 insertions, 31 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 8f029db5d271..cdeb3cfd6f32 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -177,7 +177,7 @@ fh_dup2(struct svc_fh *dst, struct svc_fh *src)
fh_put(dst);
dget(src->fh_dentry);
if (src->fh_export)
- cache_get(&src->fh_export->h);
+ exp_get(src->fh_export);
*dst = *src;
}
@@ -385,8 +385,6 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (nfsd4_has_session(cstate))
copy_clientid(&open->op_clientid, cstate->session);
- nfs4_lock_state();
-
/* check seqid for replay. set nfs4_owner */
resp = rqstp->rq_resp;
status = nfsd4_process_open1(&resp->cstate, open, nn);
@@ -431,8 +429,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
status = nfs4_check_open_reclaim(&open->op_clientid,
- cstate->minorversion,
- nn);
+ cstate, nn);
if (status)
goto out;
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
@@ -461,19 +458,17 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* set, (2) sets open->op_stateid, (3) sets open->op_delegation.
*/
status = nfsd4_process_open2(rqstp, resfh, open);
- WARN_ON(status && open->op_created);
+ WARN(status && open->op_created,
+ "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
+ be32_to_cpu(status));
out:
if (resfh && resfh != &cstate->current_fh) {
fh_dup2(&cstate->current_fh, resfh);
fh_put(resfh);
kfree(resfh);
}
- nfsd4_cleanup_open_state(open, status);
- if (open->op_openowner && !nfsd4_has_session(cstate))
- cstate->replay_owner = &open->op_openowner->oo_owner;
+ nfsd4_cleanup_open_state(cstate, open, status);
nfsd4_bump_seqid(cstate, status);
- if (!cstate->replay_owner)
- nfs4_unlock_state();
return status;
}
@@ -581,8 +576,12 @@ static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
__be32 verf[2];
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
- verf[0] = (__be32)nn->nfssvc_boot.tv_sec;
- verf[1] = (__be32)nn->nfssvc_boot.tv_usec;
+ /*
+ * This is opaque to client, so no need to byte-swap. Use
+ * __force to keep sparse happy
+ */
+ verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
+ verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
memcpy(verifier->data, verf, sizeof(verifier->data));
}
@@ -619,8 +618,7 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
case NF4LNK:
status = nfsd_symlink(rqstp, &cstate->current_fh,
create->cr_name, create->cr_namelen,
- create->cr_linkname, create->cr_linklen,
- &resfh, &create->cr_iattr);
+ create->cr_data, &resfh);
break;
case NF4BLK:
@@ -909,8 +907,8 @@ nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstat
default:
return nfserr_inval;
}
- exp_get(cstate->current_fh.fh_export);
- sin->sin_exp = cstate->current_fh.fh_export;
+
+ sin->sin_exp = exp_get(cstate->current_fh.fh_export);
fh_put(&cstate->current_fh);
return nfs_ok;
}
@@ -1015,6 +1013,49 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return status;
}
+static __be32
+nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_seek *seek)
+{
+ int whence;
+ __be32 status;
+ struct file *file;
+
+ status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
+ &seek->seek_stateid,
+ RD_STATE, &file);
+ if (status) {
+ dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
+ return status;
+ }
+
+ switch (seek->seek_whence) {
+ case NFS4_CONTENT_DATA:
+ whence = SEEK_DATA;
+ break;
+ case NFS4_CONTENT_HOLE:
+ whence = SEEK_HOLE;
+ break;
+ default:
+ status = nfserr_union_notsupp;
+ goto out;
+ }
+
+ /*
+ * Note: This call does change file->f_pos, but nothing in NFSD
+ * should ever file->f_pos.
+ */
+ seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
+ if (seek->seek_pos < 0)
+ status = nfserrno(seek->seek_pos);
+ else if (seek->seek_pos >= i_size_read(file_inode(file)))
+ seek->seek_eof = true;
+
+out:
+ fput(file);
+ return status;
+}
+
/* This routine never returns NFS_OK! If there are no other errors, it
* will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
* attributes matched. VERIFY is implemented by mapping NFSERR_SAME
@@ -1289,7 +1330,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
* Don't use the deferral mechanism for NFSv4; compounds make it
* too hard to avoid non-idempotency problems.
*/
- rqstp->rq_usedeferral = 0;
+ rqstp->rq_usedeferral = false;
/*
* According to RFC3010, this takes precedence over all other errors.
@@ -1391,10 +1432,7 @@ encode_op:
args->ops, args->opcnt, resp->opcnt, op->opnum,
be32_to_cpu(status));
- if (cstate->replay_owner) {
- nfs4_unlock_state();
- cstate->replay_owner = NULL;
- }
+ nfsd4_cstate_clear_replay(cstate);
/* XXX Ugh, we need to get rid of this kind of special case: */
if (op->opnum == OP_READ && op->u.read.rd_filp)
fput(op->u.read.rd_filp);
@@ -1408,7 +1446,7 @@ encode_op:
BUG_ON(cstate->replay_owner);
out:
/* Reset deferral mechanism for RPC deferrals */
- rqstp->rq_usedeferral = 1;
+ rqstp->rq_usedeferral = true;
dprintk("nfsv4 compound returned %d\n", ntohl(status));
return status;
}
@@ -1520,21 +1558,17 @@ static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
u32 maxcount = 0, rlen = 0;
maxcount = svc_max_payload(rqstp);
- rlen = op->u.read.rd_length;
-
- if (rlen > maxcount)
- rlen = maxcount;
+ rlen = min(op->u.read.rd_length, maxcount);
return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
}
static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
- u32 maxcount = svc_max_payload(rqstp);
- u32 rlen = op->u.readdir.rd_maxcount;
+ u32 maxcount = 0, rlen = 0;
- if (rlen > maxcount)
- rlen = maxcount;
+ maxcount = svc_max_payload(rqstp);
+ rlen = min(op->u.readdir.rd_maxcount, maxcount);
return (op_encode_hdr_size + op_encode_verifier_maxsz +
XDR_QUADLEN(rlen)) * sizeof(__be32);
@@ -1890,6 +1924,12 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
+
+ /* NFSv4.2 operations */
+ [OP_SEEK] = {
+ .op_func = (nfsd4op_func)nfsd4_seek,
+ .op_name = "OP_SEEK",
+ },
};
int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-24 07:13:03 +0200