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path: root/fs/nfsd/nfs4proc.c
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Diffstat (limited to 'fs/nfsd/nfs4proc.c')
-rw-r--r--fs/nfsd/nfs4proc.c125
1 files changed, 91 insertions, 34 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 71b428efcbb5..e466cf52d7d7 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1133,6 +1133,35 @@ nfsd4_secinfo_no_name_release(union nfsd4_op_u *u)
exp_put(u->secinfo_no_name.sin_exp);
}
+/*
+ * Validate that the requested timestamps are within the acceptable range. If
+ * timestamp appears to be in the future, then it will be clamped to
+ * current_time().
+ */
+static void
+vet_deleg_attrs(struct nfsd4_setattr *setattr, struct nfs4_delegation *dp)
+{
+ struct timespec64 now = current_time(dp->dl_stid.sc_file->fi_inode);
+ struct iattr *iattr = &setattr->sa_iattr;
+
+ if ((setattr->sa_bmval[2] & FATTR4_WORD2_TIME_DELEG_ACCESS) &&
+ !nfsd4_vet_deleg_time(&iattr->ia_atime, &dp->dl_atime, &now))
+ iattr->ia_valid &= ~(ATTR_ATIME | ATTR_ATIME_SET);
+
+ if (setattr->sa_bmval[2] & FATTR4_WORD2_TIME_DELEG_MODIFY) {
+ if (nfsd4_vet_deleg_time(&iattr->ia_mtime, &dp->dl_mtime, &now)) {
+ iattr->ia_ctime = iattr->ia_mtime;
+ if (nfsd4_vet_deleg_time(&iattr->ia_ctime, &dp->dl_ctime, &now))
+ dp->dl_setattr = true;
+ else
+ iattr->ia_valid &= ~(ATTR_CTIME | ATTR_CTIME_SET);
+ } else {
+ iattr->ia_valid &= ~(ATTR_CTIME | ATTR_CTIME_SET |
+ ATTR_MTIME | ATTR_MTIME_SET);
+ }
+ }
+}
+
static __be32
nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
@@ -1170,8 +1199,10 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfs4_delegation *dp = delegstateid(st);
/* Only for *_ATTRS_DELEG flavors */
- if (deleg_attrs_deleg(dp->dl_type))
+ if (deleg_attrs_deleg(dp->dl_type)) {
+ vet_deleg_attrs(setattr, dp);
status = nfs_ok;
+ }
}
}
if (st)
@@ -1209,12 +1240,26 @@ out:
return status;
}
+static void nfsd4_file_mark_deleg_written(struct nfs4_file *fi)
+{
+ spin_lock(&fi->fi_lock);
+ if (!list_empty(&fi->fi_delegations)) {
+ struct nfs4_delegation *dp = list_first_entry(&fi->fi_delegations,
+ struct nfs4_delegation, dl_perfile);
+
+ if (dp->dl_type == OPEN_DELEGATE_WRITE_ATTRS_DELEG)
+ dp->dl_written = true;
+ }
+ spin_unlock(&fi->fi_lock);
+}
+
static __be32
nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
struct nfsd4_write *write = &u->write;
stateid_t *stateid = &write->wr_stateid;
+ struct nfs4_stid *stid = NULL;
struct nfsd_file *nf = NULL;
__be32 status = nfs_ok;
unsigned long cnt;
@@ -1227,10 +1272,15 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
trace_nfsd_write_start(rqstp, &cstate->current_fh,
write->wr_offset, cnt);
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
- stateid, WR_STATE, &nf, NULL);
+ stateid, WR_STATE, &nf, &stid);
if (status)
return status;
+ if (stid) {
+ nfsd4_file_mark_deleg_written(stid->sc_file);
+ nfs4_put_stid(stid);
+ }
+
write->wr_how_written = write->wr_stable_how;
status = nfsd_vfs_write(rqstp, &cstate->current_fh, nf,
write->wr_offset, &write->wr_payload,
@@ -1469,7 +1519,7 @@ try_again:
return 0;
}
if (work) {
- strscpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr) - 1);
+ strscpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr));
refcount_set(&work->nsui_refcnt, 2);
work->nsui_busy = true;
list_add_tail(&work->nsui_list, &nn->nfsd_ssc_mount_list);
@@ -2447,7 +2497,7 @@ nfsd4_layoutget(struct svc_rqst *rqstp,
if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls))
goto out_put_stid;
- nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry),
+ nfserr = ops->proc_layoutget(rqstp, d_inode(current_fh->fh_dentry),
current_fh, lgp);
if (nfserr)
goto out_put_stid;
@@ -2471,11 +2521,11 @@ static __be32
nfsd4_layoutcommit(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
{
+ struct net *net = SVC_NET(rqstp);
struct nfsd4_layoutcommit *lcp = &u->layoutcommit;
const struct nfsd4_layout_seg *seg = &lcp->lc_seg;
struct svc_fh *current_fh = &cstate->current_fh;
const struct nfsd4_layout_ops *ops;
- loff_t new_size = lcp->lc_last_wr + 1;
struct inode *inode;
struct nfs4_layout_stateid *ls;
__be32 nfserr;
@@ -2491,43 +2541,50 @@ nfsd4_layoutcommit(struct svc_rqst *rqstp,
goto out;
inode = d_inode(current_fh->fh_dentry);
- nfserr = nfserr_inval;
- if (new_size <= seg->offset) {
- dprintk("pnfsd: last write before layout segment\n");
- goto out;
+ lcp->lc_size_chg = false;
+ if (lcp->lc_newoffset) {
+ loff_t new_size = lcp->lc_last_wr + 1;
+
+ nfserr = nfserr_inval;
+ if (new_size <= seg->offset)
+ goto out;
+ if (new_size > seg->offset + seg->length)
+ goto out;
+
+ if (new_size > i_size_read(inode)) {
+ lcp->lc_size_chg = true;
+ lcp->lc_newsize = new_size;
+ }
}
- if (new_size > seg->offset + seg->length) {
- dprintk("pnfsd: last write beyond layout segment\n");
+
+ nfserr = nfserr_grace;
+ if (locks_in_grace(net) && !lcp->lc_reclaim)
goto out;
- }
- if (!lcp->lc_newoffset && new_size > i_size_read(inode)) {
- dprintk("pnfsd: layoutcommit beyond EOF\n");
+ nfserr = nfserr_no_grace;
+ if (!locks_in_grace(net) && lcp->lc_reclaim)
goto out;
- }
- nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid,
- false, lcp->lc_layout_type,
- &ls);
- if (nfserr) {
- trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid);
- /* fixup error code as per RFC5661 */
- if (nfserr == nfserr_bad_stateid)
- nfserr = nfserr_badlayout;
- goto out;
+ if (!lcp->lc_reclaim) {
+ nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate,
+ &lcp->lc_sid, false, lcp->lc_layout_type, &ls);
+ if (nfserr) {
+ trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid);
+ /* fixup error code as per RFC5661 */
+ if (nfserr == nfserr_bad_stateid)
+ nfserr = nfserr_badlayout;
+ goto out;
+ }
+
+ /* LAYOUTCOMMIT does not require any serialization */
+ mutex_unlock(&ls->ls_mutex);
}
- /* LAYOUTCOMMIT does not require any serialization */
- mutex_unlock(&ls->ls_mutex);
+ nfserr = ops->proc_layoutcommit(inode, rqstp, lcp);
- if (new_size > i_size_read(inode)) {
- lcp->lc_size_chg = true;
- lcp->lc_newsize = new_size;
- } else {
- lcp->lc_size_chg = false;
+ if (!lcp->lc_reclaim) {
+ nfsd4_file_mark_deleg_written(ls->ls_stid.sc_file);
+ nfs4_put_stid(&ls->ls_stid);
}
-
- nfserr = ops->proc_layoutcommit(inode, lcp);
- nfs4_put_stid(&ls->ls_stid);
out:
return nfserr;
}
generated by cgit (git 2.34.1) at 2025-10-07 15:38:35 +0000