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-rw-r--r--fs/nfsd/nfs4proc.c16
-rw-r--r--fs/nfsd/nfs4state.c25
-rw-r--r--fs/nfsd/nfs4xdr.c19
-rw-r--r--fs/nfsd/nfsctl.c2
-rw-r--r--fs/nfsd/vfs.c24
5 files changed, 47 insertions, 39 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index d86031b6ad79..dadb3bf305b2 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1259,7 +1259,8 @@ nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type)
return NULL;
}
- if (!(exp->ex_layout_types & (1 << layout_type))) {
+ if (layout_type >= LAYOUT_TYPE_MAX ||
+ !(exp->ex_layout_types & (1 << layout_type))) {
dprintk("%s: layout type %d not supported\n",
__func__, layout_type);
return NULL;
@@ -1768,6 +1769,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
opdesc->op_get_currentstateid(cstate, &op->u);
op->status = opdesc->op_func(rqstp, cstate, &op->u);
+ /* Only from SEQUENCE */
+ if (cstate->status == nfserr_replay_cache) {
+ dprintk("%s NFS4.1 replay from cache\n", __func__);
+ status = op->status;
+ goto out;
+ }
if (!op->status) {
if (opdesc->op_set_currentstateid)
opdesc->op_set_currentstateid(cstate, &op->u);
@@ -1778,14 +1785,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
if (need_wrongsec_check(rqstp))
op->status = check_nfsd_access(current_fh->fh_export, rqstp);
}
-
encode_op:
- /* Only from SEQUENCE */
- if (cstate->status == nfserr_replay_cache) {
- dprintk("%s NFS4.1 replay from cache\n", __func__);
- status = op->status;
- goto out;
- }
if (op->status == nfserr_replay_me) {
op->replay = &cstate->replay_owner->so_replay;
nfsd4_encode_replay(&resp->xdr, op);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e9ef50addddb..22002fb75a18 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1912,28 +1912,15 @@ static void copy_clid(struct nfs4_client *target, struct nfs4_client *source)
target->cl_clientid.cl_id = source->cl_clientid.cl_id;
}
-int strdup_if_nonnull(char **target, char *source)
-{
- if (source) {
- *target = kstrdup(source, GFP_KERNEL);
- if (!*target)
- return -ENOMEM;
- } else
- *target = NULL;
- return 0;
-}
-
static int copy_cred(struct svc_cred *target, struct svc_cred *source)
{
- int ret;
+ target->cr_principal = kstrdup(source->cr_principal, GFP_KERNEL);
+ target->cr_raw_principal = kstrdup(source->cr_raw_principal,
+ GFP_KERNEL);
+ if ((source->cr_principal && ! target->cr_principal) ||
+ (source->cr_raw_principal && ! target->cr_raw_principal))
+ return -ENOMEM;
- ret = strdup_if_nonnull(&target->cr_principal, source->cr_principal);
- if (ret)
- return ret;
- ret = strdup_if_nonnull(&target->cr_raw_principal,
- source->cr_raw_principal);
- if (ret)
- return ret;
target->cr_flavor = source->cr_flavor;
target->cr_uid = source->cr_uid;
target->cr_gid = source->cr_gid;
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 33017d652b1d..26780d53a6f9 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2831,9 +2831,14 @@ out_acl:
}
#endif /* CONFIG_NFSD_PNFS */
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
- status = nfsd4_encode_bitmap(xdr, NFSD_SUPPATTR_EXCLCREAT_WORD0,
- NFSD_SUPPATTR_EXCLCREAT_WORD1,
- NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ u32 supp[3];
+
+ memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp));
+ supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0;
+ supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1;
+ supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2;
+
+ status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]);
if (status)
goto out;
}
@@ -4119,8 +4124,7 @@ nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_getdeviceinfo *gdev)
{
struct xdr_stream *xdr = &resp->xdr;
- const struct nfsd4_layout_ops *ops =
- nfsd4_layout_ops[gdev->gd_layout_type];
+ const struct nfsd4_layout_ops *ops;
u32 starting_len = xdr->buf->len, needed_len;
__be32 *p;
@@ -4137,6 +4141,7 @@ nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
/* If maxcount is 0 then just update notifications */
if (gdev->gd_maxcount != 0) {
+ ops = nfsd4_layout_ops[gdev->gd_layout_type];
nfserr = ops->encode_getdeviceinfo(xdr, gdev);
if (nfserr) {
/*
@@ -4189,8 +4194,7 @@ nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_layoutget *lgp)
{
struct xdr_stream *xdr = &resp->xdr;
- const struct nfsd4_layout_ops *ops =
- nfsd4_layout_ops[lgp->lg_layout_type];
+ const struct nfsd4_layout_ops *ops;
__be32 *p;
dprintk("%s: err %d\n", __func__, nfserr);
@@ -4213,6 +4217,7 @@ nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr,
*p++ = cpu_to_be32(lgp->lg_seg.iomode);
*p++ = cpu_to_be32(lgp->lg_layout_type);
+ ops = nfsd4_layout_ops[lgp->lg_layout_type];
nfserr = ops->encode_layoutget(xdr, lgp);
out:
kfree(lgp->lg_content);
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 8bf8f667a8cf..6493df6b1bd5 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1146,7 +1146,7 @@ static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size)
static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
{
- static struct tree_descr nfsd_files[] = {
+ static const struct tree_descr nfsd_files[] = {
[NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO},
[NFSD_Export_features] = {"export_features",
&export_features_operations, S_IRUGO},
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 9aaf6ca77569..2be32955d7f2 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -94,6 +94,12 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
err = follow_down(&path);
if (err < 0)
goto out;
+ if (path.mnt == exp->ex_path.mnt && path.dentry == dentry &&
+ nfsd_mountpoint(dentry, exp) == 2) {
+ /* This is only a mountpoint in some other namespace */
+ path_put(&path);
+ goto out;
+ }
exp2 = rqst_exp_get_by_name(rqstp, &path);
if (IS_ERR(exp2)) {
@@ -167,16 +173,26 @@ static int nfsd_lookup_parent(struct svc_rqst *rqstp, struct dentry *dparent, st
/*
* For nfsd purposes, we treat V4ROOT exports as though there was an
* export at *every* directory.
+ * We return:
+ * '1' if this dentry *must* be an export point,
+ * '2' if it might be, if there is really a mount here, and
+ * '0' if there is no chance of an export point here.
*/
int nfsd_mountpoint(struct dentry *dentry, struct svc_export *exp)
{
- if (d_mountpoint(dentry))
+ if (!d_inode(dentry))
+ return 0;
+ if (exp->ex_flags & NFSEXP_V4ROOT)
return 1;
if (nfsd4_is_junction(dentry))
return 1;
- if (!(exp->ex_flags & NFSEXP_V4ROOT))
- return 0;
- return d_inode(dentry) != NULL;
+ if (d_mountpoint(dentry))
+ /*
+ * Might only be a mountpoint in a different namespace,
+ * but we need to check.
+ */
+ return 2;
+ return 0;
}
__be32
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-30 00:35:14 +0300