On Sat, 4 May 2013, J. Bruce Fields wrote:
> James, thanks very much for taking a look at these. I notice this is
> the one patch that touches security that you didn't respond to (note the
> 4 lines in hooks.c)--do you see any problem here, or does this look OK
> too?
Yep, looks fine.
Acked-by: James Morris <james.l.morris@xxxxxxxxxx>
>
> --b.
>
> On Thu, May 02, 2013 at 01:19:07PM -0400, Steve Dickson wrote:
> > From: David Quigley <dpquigl@xxxxxxxxxxxxxxx>
> >
> > This patch implements the client transport and handling support for labeled
> > NFS. The patch adds two functions to encode and decode the security label
> > recommended attribute which makes use of the LSM hooks added earlier. It also
> > adds code to grab the label from the file attribute structures and encode the
> > label to be sent back to the server.
> >
> > Signed-off-by: Matthew N. Dodd <Matthew.Dodd@xxxxxxxxxx>
> > Signed-off-by: Miguel Rodel Felipe <Rodel_FM@xxxxxxxxxxxxxxxxx>
> > Signed-off-by: Phua Eu Gene <PHUA_Eu_Gene@xxxxxxxxxxxxxxxxx>
> > Signed-off-by: Khin Mi Mi Aung <Mi_Mi_AUNG@xxxxxxxxxxxxxxxxx>
> > ---
> > fs/nfs/inode.c | 57 ++++++++-
> > fs/nfs/nfs4proc.c | 318 +++++++++++++++++++++++++++++++++++++++++++---
> > fs/nfs/nfs4xdr.c | 168 ++++++++++++++++++------
> > fs/nfs/pnfs.c | 2 +-
> > fs/nfs/super.c | 17 ++-
> > include/linux/nfs_fs.h | 13 ++
> > include/linux/nfs_fs_sb.h | 7 +
> > security/selinux/hooks.c | 4 +
> > 8 files changed, 524 insertions(+), 62 deletions(-)
> >
> > diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
> > index 4e92dfb..cc1c85d 100644
> > --- a/fs/nfs/inode.c
> > +++ b/fs/nfs/inode.c
> > @@ -162,11 +162,19 @@ static void nfs_zap_caches_locked(struct inode *inode)
> >
> > memset(NFS_I(inode)->cookieverf, 0, sizeof(NFS_I(inode)->cookieverf));
> > if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
> > - nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
> > nfs_fscache_invalidate(inode);
> > - } else {
> > - nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
> > - }
> > + nfsi->cache_validity |= NFS_INO_INVALID_ATTR
> > + | NFS_INO_INVALID_LABEL
> > + | NFS_INO_INVALID_DATA
> > + | NFS_INO_INVALID_ACCESS
> > + | NFS_INO_INVALID_ACL
> > + | NFS_INO_REVAL_PAGECACHE;
> > + } else
> > + nfsi->cache_validity |= NFS_INO_INVALID_ATTR
> > + | NFS_INO_INVALID_LABEL
> > + | NFS_INO_INVALID_ACCESS
> > + | NFS_INO_INVALID_ACL
> > + | NFS_INO_REVAL_PAGECACHE;
> > }
> >
> > void nfs_zap_caches(struct inode *inode)
> > @@ -258,6 +266,24 @@ nfs_init_locked(struct inode *inode, void *opaque)
> > }
> >
> > #ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > +void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
> > + struct nfs4_label *label)
> > +{
> > + int error;
> > +
> > + if ((fattr->valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL) &&
> > + label && inode->i_security) {
> > + error = security_inode_notifysecctx(inode, label->label,
> > + label->len);
> > + if (error)
> > + printk(KERN_ERR "%s() %s %d "
> > + "security_inode_notifysecctx() %d\n",
> > + __func__,
> > + (char *)label->label,
> > + label->len, error);
> > + }
> > +}
> > +
> > struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags)
> > {
> > struct nfs4_label *label = NULL;
> > @@ -283,7 +309,13 @@ struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags)
> > return label;
> > }
> > EXPORT_SYMBOL_GPL(nfs4_label_alloc);
> > +#else
> > +void inline nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
> > + struct nfs4_label *label)
> > +{
> > +}
> > #endif
> > +EXPORT_SYMBOL_GPL(nfs_setsecurity);
> >
> > /*
> > * This is our front-end to iget that looks up inodes by file handle
> > @@ -412,6 +444,9 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
> > */
> > inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
> > }
> > +
> > + nfs_setsecurity(inode, fattr, label);
> > +
> > nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
> > nfsi->attrtimeo_timestamp = now;
> > nfsi->access_cache = RB_ROOT;
> > @@ -771,6 +806,7 @@ struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_c
> > spin_unlock(&inode->i_lock);
> > return ctx;
> > }
> > +EXPORT_SYMBOL_GPL(nfs_find_open_context);
> >
> > static void nfs_file_clear_open_context(struct file *filp)
> > {
> > @@ -899,7 +935,8 @@ static int nfs_attribute_cache_expired(struct inode *inode)
> > */
> > int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
> > {
> > - if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
> > + if (!(NFS_I(inode)->cache_validity &
> > + (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL))
> > && !nfs_attribute_cache_expired(inode))
> > return NFS_STALE(inode) ? -ESTALE : 0;
> > return __nfs_revalidate_inode(server, inode);
> > @@ -1240,6 +1277,9 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr, struct nfs4_
> > status = nfs_refresh_inode_locked(inode, fattr, label);
> > spin_unlock(&inode->i_lock);
> >
> > + if (label && !status)
> > + nfs_setsecurity(inode, fattr, label);
> > +
> > return status;
> > }
> > EXPORT_SYMBOL_GPL(nfs_refresh_inode);
> > @@ -1279,6 +1319,10 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr, struc
> > spin_lock(&inode->i_lock);
> > status = nfs_post_op_update_inode_locked(inode, fattr, label);
> > spin_unlock(&inode->i_lock);
> > + if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) {
> > + if (label && !status)
> > + nfs_setsecurity(inode, fattr, label);
> > + }
> > return status;
> > }
> > EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
> > @@ -1519,7 +1563,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, struct
> > inode->i_blocks = fattr->du.nfs2.blocks;
> >
> > /* Update attrtimeo value if we're out of the unstable period */
> > - if (invalid & NFS_INO_INVALID_ATTR) {
> > + if (invalid & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) {
> > nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
> > nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
> > nfsi->attrtimeo_timestamp = now;
> > @@ -1532,6 +1576,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr, struct
> > }
> > }
> > invalid &= ~NFS_INO_INVALID_ATTR;
> > + invalid &= ~NFS_INO_INVALID_LABEL;
> > /* Don't invalidate the data if we were to blame */
> > if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
> > || S_ISLNK(inode->i_mode)))
> > diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
> > index 56f24c0..0e5b319 100644
> > --- a/fs/nfs/nfs4proc.c
> > +++ b/fs/nfs/nfs4proc.c
> > @@ -87,6 +87,52 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
> > static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *);
> > static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *);
> > #endif
> > +
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > +static inline struct nfs4_label *
> > +nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
> > + struct iattr *sattr, struct nfs4_label *l)
> > +{
> > + int err;
> > + int minor_version = NFS_SERVER(dir)->nfs_client->cl_minorversion;
> > +
> > + if (minor_version < 2)
> > + return NULL;
> > +
> > + if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL)) {
> > + err = security_dentry_init_security(dentry, sattr->ia_mode,
> > + &dentry->d_name, (void **)&l->label, &l->len);
> > + if (err == 0)
> > + return l;
> > + }
> > + return NULL;
> > +}
> > +static inline void
> > +nfs4_label_release_security(struct nfs4_label *label)
> > +{
> > + if (label)
> > + security_release_secctx(label->label, label->len);
> > +}
> > +static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
> > +{
> > + if (label)
> > + return server->attr_bitmask;
> > +
> > + return server->attr_bitmask_nl;
> > +}
> > +#else
> > +static inline struct nfs4_label *
> > +nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
> > + struct iattr *sattr, struct nfs4_label *l)
> > +{ return NULL; }
> > +static inline void
> > +nfs4_label_release_security(struct nfs4_label *label)
> > +{ return; }
> > +static inline u32 *
> > +nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
> > +{ return server->attr_bitmask; }
> > +#endif
> > +
> > /* Prevent leaks of NFSv4 errors into userland */
> > static int nfs4_map_errors(int err)
> > {
> > @@ -133,7 +179,10 @@ const u32 nfs4_fattr_bitmap[3] = {
> > | FATTR4_WORD1_SPACE_USED
> > | FATTR4_WORD1_TIME_ACCESS
> > | FATTR4_WORD1_TIME_METADATA
> > - | FATTR4_WORD1_TIME_MODIFY
> > + | FATTR4_WORD1_TIME_MODIFY,
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > + FATTR4_WORD2_SECURITY_LABEL
> > +#endif
> > };
> >
> > static const u32 nfs4_pnfs_open_bitmap[3] = {
> > @@ -817,7 +866,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
> > p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
> > p->o_arg.name = &dentry->d_name;
> > p->o_arg.server = server;
> > - p->o_arg.bitmask = server->attr_bitmask;
> > + p->o_arg.bitmask = nfs4_bitmask(server, label);
> > p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
> > p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
> > p->o_arg.label = label;
> > @@ -1973,6 +2022,7 @@ static int _nfs4_do_open(struct inode *dir,
> > if (status == 0) {
> > nfs_setattr_update_inode(state->inode, sattr);
> > nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr, olabel);
> > + nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
> > }
> > }
> >
> > @@ -2086,6 +2136,10 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
> > unsigned long timestamp = jiffies;
> > int status;
> >
> > + arg.bitmask = nfs4_bitmask(server, ilabel);
> > + if (ilabel)
> > + arg.bitmask = nfs4_bitmask(server, olabel);
> > +
> > nfs_fattr_init(fattr);
> >
> > if (state != NULL) {
> > @@ -2315,7 +2369,7 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
> > if (calldata->arg.seqid == NULL)
> > goto out_free_calldata;
> > calldata->arg.fmode = 0;
> > - calldata->arg.bitmask = server->cache_consistency_bitmask;
> > + calldata->arg.bitmask = server->cache_consistency_bitmask_nl;
> > calldata->res.fattr = &calldata->fattr;
> > calldata->res.seqid = calldata->arg.seqid;
> > calldata->res.server = server;
> > @@ -2345,11 +2399,16 @@ static struct inode *
> > nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
> > {
> > struct nfs4_state *state;
> > - struct nfs4_label *label = NULL;
> > + struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
> > +
> > + label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
> >
> > /* Protect against concurrent sillydeletes */
> > state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, label,
> > ctx->cred, &ctx->mdsthreshold);
> > +
> > + nfs4_label_release_security(label);
> > +
> > if (IS_ERR(state))
> > return ERR_CAST(state);
> > ctx->state = state;
> > @@ -2409,10 +2468,26 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
> > server->caps |= NFS_CAP_CTIME;
> > if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
> > server->caps |= NFS_CAP_MTIME;
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > + if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
> > + server->caps |= NFS_CAP_SECURITY_LABEL;
> > +#endif
> > + memcpy(server->attr_bitmask_nl, res.attr_bitmask,
> > + sizeof(server->attr_bitmask));
> > +
> > + if (server->caps & NFS_CAP_SECURITY_LABEL)
> > + server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
> >
> > memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
> > server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
> > - server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
> > + server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA |
> > + FATTR4_WORD1_TIME_MODIFY;
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > + server->cache_consistency_bitmask[2] &= FATTR4_WORD2_SECURITY_LABEL;
> > +#endif
> > + memcpy(server->cache_consistency_bitmask_nl, server->cache_consistency_bitmask,
> > + sizeof(server->cache_consistency_bitmask_nl));
> > + server->cache_consistency_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
> > server->acl_bitmask = res.acl_bitmask;
> > server->fh_expire_type = res.fh_expire_type;
> > }
> > @@ -2435,8 +2510,9 @@ int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
> > static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
> > struct nfs_fsinfo *info)
> > {
> > + u32 bitmask[3];
> > struct nfs4_lookup_root_arg args = {
> > - .bitmask = nfs4_fattr_bitmap,
> > + .bitmask = bitmask,
> > };
> > struct nfs4_lookup_res res = {
> > .server = server,
> > @@ -2449,6 +2525,13 @@ static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
> > .rpc_resp = &res,
> > };
> >
> > + bitmask[0] = nfs4_fattr_bitmap[0];
> > + bitmask[1] = nfs4_fattr_bitmap[1];
> > + /*
> > + * Process the label in the upcoming getfattr
> > + */
> > + bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
> > +
> > nfs_fattr_init(info->fattr);
> > return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
> > }
> > @@ -2635,7 +2718,9 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
> > .rpc_argp = &args,
> > .rpc_resp = &res,
> > };
> > -
> > +
> > + args.bitmask = nfs4_bitmask(server, label);
> > +
> > nfs_fattr_init(fattr);
> > return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
> > }
> > @@ -2730,6 +2815,7 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
> > struct nfs4_lookup_res res = {
> > .server = server,
> > .fattr = fattr,
> > + .label = label,
> > .fh = fhandle,
> > };
> > struct rpc_message msg = {
> > @@ -2738,6 +2824,8 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
> > .rpc_resp = &res,
> > };
> >
> > + args.bitmask = nfs4_bitmask(server, label);
> > +
> > nfs_fattr_init(fattr);
> >
> > dprintk("NFS call lookup %s\n", name->name);
> > @@ -2844,7 +2932,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
> > .rpc_cred = entry->cred,
> > };
> > int mode = entry->mask;
> > - int status;
> > + int status = 0;
> >
> > /*
> > * Determine which access bits we want to ask for...
> > @@ -2873,6 +2961,8 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry
> > goto out;
> > }
> >
> > + args.bitmask = nfs4_cache_bitmask(server, res.label);
> > +
> > status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
> > if (!status) {
> > nfs_access_set_mask(entry, res.access);
> > @@ -2959,7 +3049,7 @@ static int
> > nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
> > int flags)
> > {
> > - struct nfs4_label *ilabel = NULL;
> > + struct nfs4_label l, *ilabel = NULL;
> > struct nfs_open_context *ctx;
> > struct nfs4_state *state;
> > int status = 0;
> > @@ -2968,6 +3058,8 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
> > if (IS_ERR(ctx))
> > return PTR_ERR(ctx);
> >
> > + ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
> > +
> > sattr->ia_mode &= ~current_umask();
> > state = nfs4_do_open(dir, dentry, ctx->mode,
> > flags, sattr, ilabel, ctx->cred,
> > @@ -2981,6 +3073,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
> > nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
> > ctx->state = state;
> > out:
> > + nfs4_label_release_security(ilabel);
> > put_nfs_open_context(ctx);
> > return status;
> > }
> > @@ -3029,6 +3122,8 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
> > res->server = server;
> > msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
> > nfs41_init_sequence(&args->seq_args, &res->seq_res, 1);
> > +
> > + nfs_fattr_init(res->dir_attr);
> > }
> >
> > static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
> > @@ -3179,6 +3274,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *
> > status = PTR_ERR(res.label);
> > goto out;
> > }
> > + arg.bitmask = nfs4_bitmask(server, res.label);
> >
> > status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
> > if (!status) {
> > @@ -3236,7 +3332,7 @@ static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
> > data->arg.name = name;
> > data->arg.attrs = sattr;
> > data->arg.ftype = ftype;
> > - data->arg.bitmask = server->attr_bitmask;
> > + data->arg.bitmask = nfs4_bitmask(server, data->label);
> > data->res.server = server;
> > data->res.fh = &data->fh;
> > data->res.fattr = &data->fattr;
> > @@ -3297,14 +3393,19 @@ static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
> > struct page *page, unsigned int len, struct iattr *sattr)
> > {
> > struct nfs4_exception exception = { };
> > - struct nfs4_label *label = NULL;
> > + struct nfs4_label l, *label = NULL;
> > int err;
> > +
> > + label = nfs4_label_init_security(dir, dentry, sattr, &l);
> > +
> > do {
> > err = nfs4_handle_exception(NFS_SERVER(dir),
> > _nfs4_proc_symlink(dir, dentry, page,
> > len, sattr, label),
> > &exception);
> > } while (exception.retry);
> > +
> > + nfs4_label_release_security(label);
> > return err;
> > }
> >
> > @@ -3330,15 +3431,19 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
> > struct iattr *sattr)
> > {
> > struct nfs4_exception exception = { };
> > - struct nfs4_label *label = NULL;
> > + struct nfs4_label l, *label = NULL;
> > int err;
> >
> > + label = nfs4_label_init_security(dir, dentry, sattr, &l);
> > +
> > sattr->ia_mode &= ~current_umask();
> > do {
> > err = nfs4_handle_exception(NFS_SERVER(dir),
> > _nfs4_proc_mkdir(dir, dentry, sattr, label),
> > &exception);
> > } while (exception.retry);
> > + nfs4_label_release_security(label);
> > +
> > return err;
> > }
> >
> > @@ -3354,7 +3459,9 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
> > .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
> > .plus = plus,
> > };
> > - struct nfs4_readdir_res res;
> > + struct nfs4_readdir_res res = {
> > + .pgbase = 0,
> > + };
> > struct rpc_message msg = {
> > .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
> > .rpc_argp = &args,
> > @@ -3434,15 +3541,20 @@ static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
> > struct iattr *sattr, dev_t rdev)
> > {
> > struct nfs4_exception exception = { };
> > - struct nfs4_label *label = NULL;
> > + struct nfs4_label l, *label = NULL;
> > int err;
> >
> > + label = nfs4_label_init_security(dir, dentry, sattr, &l);
> > +
> > sattr->ia_mode &= ~current_umask();
> > do {
> > err = nfs4_handle_exception(NFS_SERVER(dir),
> > _nfs4_proc_mknod(dir, dentry, sattr, label, rdev),
> > &exception);
> > } while (exception.retry);
> > +
> > + nfs4_label_release_security(label);
> > +
> > return err;
> > }
> >
> > @@ -3658,7 +3770,8 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag
> > data->args.bitmask = NULL;
> > data->res.fattr = NULL;
> > } else
> > - data->args.bitmask = server->cache_consistency_bitmask;
> > +
> > + data->args.bitmask = nfs4_cache_bitmask(server, NULL);
> >
> > if (!data->write_done_cb)
> > data->write_done_cb = nfs4_write_done_cb;
> > @@ -4083,6 +4196,179 @@ static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen
> > return err;
> > }
> >
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > +static int _nfs4_get_security_label(struct inode *inode, void *buf,
> > + size_t buflen)
> > +{
> > + struct nfs_server *server = NFS_SERVER(inode);
> > + struct nfs_fattr fattr;
> > + struct nfs4_label label = {0, 0, buflen, buf};
> > +
> > + u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
> > + struct nfs4_getattr_arg args = {
> > + .fh = NFS_FH(inode),
> > + .bitmask = bitmask,
> > + };
> > + struct nfs4_getattr_res res = {
> > + .fattr = &fattr,
> > + .label = &label,
> > + .server = server,
> > + };
> > + struct rpc_message msg = {
> > + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
> > + .rpc_argp = &args,
> > + .rpc_resp = &res,
> > + };
> > + int ret;
> > +
> > + nfs_fattr_init(&fattr);
> > +
> > + ret = rpc_call_sync(server->client, &msg, 0);
> > + if (ret)
> > + return ret;
> > + if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
> > + return -ENOENT;
> > + if (buflen < label.len)
> > + return -ERANGE;
> > + return 0;
> > +}
> > +
> > +static int nfs4_get_security_label(struct inode *inode, void *buf,
> > + size_t buflen)
> > +{
> > + struct nfs4_exception exception = { };
> > + int err;
> > +
> > + if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
> > + return -EOPNOTSUPP;
> > +
> > + do {
> > + err = nfs4_handle_exception(NFS_SERVER(inode),
> > + _nfs4_get_security_label(inode, buf, buflen),
> > + &exception);
> > + } while (exception.retry);
> > + return err;
> > +}
> > +
> > +static int _nfs4_do_set_security_label(struct inode *inode,
> > + struct nfs4_label *ilabel,
> > + struct nfs_fattr *fattr,
> > + struct nfs4_label *olabel,
> > + struct nfs4_state *state)
> > +{
> > +
> > + struct iattr sattr = {0};
> > + struct nfs_server *server = NFS_SERVER(inode);
> > + const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
> > + struct nfs_setattrargs args = {
> > + .fh = NFS_FH(inode),
> > + .iap = &sattr,
> > + .server = server,
> > + .bitmask = bitmask,
> > + .label = ilabel,
> > + };
> > + struct nfs_setattrres res = {
> > + .fattr = fattr,
> > + .label = olabel,
> > + .server = server,
> > + };
> > + struct rpc_message msg = {
> > + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
> > + .rpc_argp = &args,
> > + .rpc_resp = &res,
> > + };
> > + unsigned long timestamp = jiffies;
> > + int status;
> > +
> > + if (state != NULL) {
> > + struct nfs_lockowner lockowner = {
> > + .l_owner = current->files,
> > + .l_pid = current->tgid,
> > + };
> > +
> > + msg.rpc_cred = state->owner->so_cred;
> > + nfs4_select_rw_stateid(&args.stateid, state, FMODE_WRITE,
> > + &lockowner);
> > + } else if (nfs4_copy_delegation_stateid(&args.stateid, inode,
> > + FMODE_WRITE)) {
> > + /* Use that stateid */
> > + } else
> > + nfs4_stateid_copy(&args.stateid, &zero_stateid);
> > +
> > + status = rpc_call_sync(server->client, &msg, 0);
> > + if (status == 0 && state != NULL)
> > + renew_lease(server, timestamp);
> > + return status;
> > +}
> > +
> > +static int nfs4_do_set_security_label(struct inode *inode,
> > + struct nfs4_label *ilabel,
> > + struct nfs_fattr *fattr,
> > + struct nfs4_label *olabel,
> > + struct nfs4_state *state)
> > +{
> > + struct nfs4_exception exception = { };
> > + int err;
> > +
> > + do {
> > + err = nfs4_handle_exception(NFS_SERVER(inode),
> > + _nfs4_do_set_security_label(inode, ilabel,
> > + fattr, olabel, state),
> > + &exception);
> > + } while (exception.retry);
> > + return err;
> > +}
> > +
> > +static int
> > +nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen)
> > +{
> > + struct nfs4_label ilabel, *olabel = NULL;
> > + struct nfs_fattr fattr;
> > + struct rpc_cred *cred;
> > + struct nfs_open_context *ctx;
> > + struct nfs4_state *state = NULL;
> > + struct inode *inode = dentry->d_inode;
> > + int status;
> > +
> > + if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
> > + return -EOPNOTSUPP;
> > +
> > + nfs_fattr_init(&fattr);
> > +
> > + ilabel.pi = 0;
> > + ilabel.lfs = 0;
> > + ilabel.label = (char *)buf;
> > + ilabel.len = buflen;
> > +
> > + cred = rpc_lookup_cred();
> > + if (IS_ERR(cred))
> > + return PTR_ERR(cred);
> > +
> > + olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
> > + if (IS_ERR(olabel)) {
> > + status = -PTR_ERR(olabel);
> > + goto out;
> > + }
> > +
> > + /* Search for an existing open(O_WRITE) file */
> > + ctx = nfs_find_open_context(inode, cred, FMODE_WRITE);
> > + if (ctx != NULL)
> > + state = ctx->state;
> > +
> > + status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel,
> > + state);
> > + if (status == 0)
> > + nfs_setsecurity(inode, &fattr, olabel);
> > + if (ctx != NULL)
> > + put_nfs_open_context(ctx);
> > + nfs4_label_free(olabel);
> > +out:
> > + put_rpccred(cred);
> > + return status;
> > +}
> > +#endif /* CONFIG_NFS_V4_SECURITY_LABEL */
> > +
> > +
> > static int
> > nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
> > {
> > @@ -4371,7 +4657,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
> > nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
> > data->args.fhandle = &data->fh;
> > data->args.stateid = &data->stateid;
> > - data->args.bitmask = server->cache_consistency_bitmask;
> > + data->args.bitmask = server->cache_consistency_bitmask_nl;
> > nfs_copy_fh(&data->fh, NFS_FH(inode));
> > nfs4_stateid_copy(&data->stateid, stateid);
> > data->res.fattr = &data->fattr;
> > diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
> > index 4fa0bf1..2726f21 100644
> > --- a/fs/nfs/nfs4xdr.c
> > +++ b/fs/nfs/nfs4xdr.c
> > @@ -102,12 +102,23 @@ static int nfs4_stat_to_errno(int);
> > #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
> > #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
> > #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
> > +#ifdef CONFIG_NFS_V4_SECURITY_LABEL
> > +/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
> > +#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
> > +#define encode_readdir_space 24
> > +#define encode_readdir_bitmask_sz 3
> > +#else
> > +#define nfs4_label_maxsz 0
> > +#define encode_readdir_space 20
> > +#define encode_readdir_bitmask_sz 2
> > +#endif
> > /* We support only one layout type per file system */
> > #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
> > /* This is based on getfattr, which uses the most attributes: */
> > #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
> > 3 + 3 + 3 + nfs4_owner_maxsz + \
> > - nfs4_group_maxsz + decode_mdsthreshold_maxsz))
> > + nfs4_group_maxsz + nfs4_label_maxsz + \
> > + decode_mdsthreshold_maxsz))
> > #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
> > nfs4_fattr_value_maxsz)
> > #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
> > @@ -115,6 +126,7 @@ static int nfs4_stat_to_errno(int);
> > 1 + 2 + 1 + \
> > nfs4_owner_maxsz + \
> > nfs4_group_maxsz + \
> > + nfs4_label_maxsz + \
> > 4 + 4)
> > #define encode_savefh_maxsz (op_encode_hdr_maxsz)
> > #define decode_savefh_maxsz (op_decode_hdr_maxsz)
> > @@ -192,9 +204,11 @@ static int nfs4_stat_to_errno(int);
> > encode_stateid_maxsz + 3)
> > #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
> > #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
> > - 2 + encode_verifier_maxsz + 5)
> > + 2 + encode_verifier_maxsz + 5 + \
> > + nfs4_label_maxsz)
> > #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
> > - decode_verifier_maxsz)
> > + decode_verifier_maxsz + \
> > + nfs4_label_maxsz + nfs4_fattr_maxsz)
> > #define encode_readlink_maxsz (op_encode_hdr_maxsz)
> > #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
> > #define encode_write_maxsz (op_encode_hdr_maxsz + \
> > @@ -972,7 +986,9 @@ static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *ve
> > encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
> > }
> >
> > -static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
> > +static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
> > + const struct nfs4_label *label,
> > + const struct nfs_server *server)
> > {
> > char owner_name[IDMAP_NAMESZ];
> > char owner_group[IDMAP_NAMESZ];
> > @@ -1022,6 +1038,8 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const
> > }
> > len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
> > }
> > + if (label)
> > + len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
> > if (iap->ia_valid & ATTR_ATIME_SET)
> > len += 16;
> > else if (iap->ia_valid & ATTR_ATIME)
> > @@ -1078,6 +1096,13 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const
> > bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
> > *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
> > }
> > + if (label) {
> > + bmval2 |= FATTR4_WORD2_SECURITY_LABEL;
> > + *p++ = cpu_to_be32(label->lfs);
> > + *p++ = cpu_to_be32(label->pi);
> > + *p++ = cpu_to_be32(label->len);
> > + p = xdr_encode_opaque_fixed(p, label->label, label->len);
> > + }
> >
> > /*
> > * Now we backfill the bitmap and the attribute buffer length.
> > @@ -1144,7 +1169,7 @@ static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *
> > }
> >
> > encode_string(xdr, create->name->len, create->name->name);
> > - encode_attrs(xdr, create->attrs, create->server);
> > + encode_attrs(xdr, create->attrs, create->label, create->server);
> > }
> >
> > static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
> > @@ -1377,21 +1402,23 @@ static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_op
> > switch(arg->open_flags & O_EXCL) {
> > case 0:
> > *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
> > - encode_attrs(xdr, arg->u.attrs, arg->server);
> > + encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
> > break;
> > default:
> > clp = arg->server->nfs_client;
> > if (clp->cl_mvops->minor_version > 0) {
> > if (nfs4_has_persistent_session(clp)) {
> > *p = cpu_to_be32(NFS4_CREATE_GUARDED);
> > - encode_attrs(xdr, arg->u.attrs, arg->server);
> > + encode_attrs(xdr, arg->u.attrs, arg->label,
> > + arg->server);
> > } else {
> > struct iattr dummy;
> >
> > *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
> > encode_nfs4_verifier(xdr, &arg->u.verifier);
> > dummy.ia_valid = 0;
> > - encode_attrs(xdr, &dummy, arg->server);
> > + encode_attrs(xdr, &dummy, arg->label,
> > + arg->server);
> > }
> > } else {
> > *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
> > @@ -1547,7 +1574,7 @@ static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args,
> >
> > static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
> > {
> > - uint32_t attrs[2] = {
> > + uint32_t attrs[3] = {
> > FATTR4_WORD0_RDATTR_ERROR,
> > FATTR4_WORD1_MOUNTED_ON_FILEID,
> > };
> > @@ -1570,20 +1597,26 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg
> > encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
> > encode_uint64(xdr, readdir->cookie);
> > encode_nfs4_verifier(xdr, &readdir->verifier);
> > - p = reserve_space(xdr, 20);
> > + p = reserve_space(xdr, encode_readdir_space);
> > *p++ = cpu_to_be32(dircount);
> > *p++ = cpu_to_be32(readdir->count);
> > - *p++ = cpu_to_be32(2);
> > -
> > + *p++ = cpu_to_be32(encode_readdir_bitmask_sz);
> > *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
> > - *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
> > + *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
> > + if (encode_readdir_bitmask_sz > 2) {
> > + if (hdr->minorversion > 1)
> > + attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
> > + p++, *p++ = cpu_to_be32(attrs[2] & readdir->bitmask[2]);
> > + }
> > memcpy(verf, readdir->verifier.data, sizeof(verf));
> > - dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
> > +
> > + dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
> > __func__,
> > (unsigned long long)readdir->cookie,
> > verf[0], verf[1],
> > attrs[0] & readdir->bitmask[0],
> > - attrs[1] & readdir->bitmask[1]);
> > + attrs[1] & readdir->bitmask[1],
> > + attrs[2] & readdir->bitmask[2]);
> > }
> >
> > static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
> > @@ -1642,7 +1675,7 @@ static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs
> > {
> > encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
> > encode_nfs4_stateid(xdr, &arg->stateid);
> > - encode_attrs(xdr, arg->iap, server);
> > + encode_attrs(xdr, arg->iap, arg->label, server);
> > }
> >
> > static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
> > @@ -4060,6 +4093,60 @@ static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
> > return status;
> > }
> >
> > +static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
> > + struct nfs4_label *label)
> > +{
> > + uint32_t pi = 0;
> > + uint32_t lfs = 0;
> > + __u32 len;
> > + __be32 *p;
> > + int status = 0;
> > +
> > + if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
> > + return -EIO;
> > + if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
> > + p = xdr_inline_decode(xdr, 4);
> > + if (unlikely(!p))
> > + goto out_overflow;
> > + lfs = be32_to_cpup(p++);
> > + p = xdr_inline_decode(xdr, 4);
> > + if (unlikely(!p))
> > + goto out_overflow;
> > + pi = be32_to_cpup(p++);
> > + p = xdr_inline_decode(xdr, 4);
> > + if (unlikely(!p))
> > + goto out_overflow;
> > + len = be32_to_cpup(p++);
> > + p = xdr_inline_decode(xdr, len);
> > + if (unlikely(!p))
> > + goto out_overflow;
> > + if (len < NFS4_MAXLABELLEN) {
> > + if (label) {
> > + memcpy(label->label, p, len);
> > + label->len = len;
> > + label->pi = pi;
> > + label->lfs = lfs;
> > + status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
> > + } else {
> > + printk("%s(): NULL label.\n", __func__);
> > + dump_stack();
> > + goto out_overflow;
> > + }
> > + bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
> > + } else
> > + printk(KERN_WARNING "%s: label too long (%u)!\n",
> > + __func__, len);
> > + }
> > + if (label && label->label)
> > + dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
> > + (char *)label->label, label->len, label->pi, label->lfs);
> > + return status;
> > +
> > +out_overflow:
> > + print_overflow_msg(__func__, xdr);
> > + return -EIO;
> > +}
> > +
> > static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
> > {
> > int status = 0;
> > @@ -4402,7 +4489,7 @@ out_overflow:
> >
> > static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
> > struct nfs_fattr *fattr, struct nfs_fh *fh,
> > - struct nfs4_fs_locations *fs_loc,
> > + struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
> > const struct nfs_server *server)
> > {
> > int status;
> > @@ -4510,6 +4597,11 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
> > if (status < 0)
> > goto xdr_error;
> >
> > + status = decode_attr_security_label(xdr, bitmap, label);
> > + if (status < 0)
> > + goto xdr_error;
> > + fattr->valid |= status;
> > +
> > xdr_error:
> > dprintk("%s: xdr returned %d\n", __func__, -status);
> > return status;
> > @@ -4517,7 +4609,7 @@ xdr_error:
> >
> > static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
> > struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
> > - const struct nfs_server *server)
> > + struct nfs4_label *label, const struct nfs_server *server)
> > {
> > unsigned int savep;
> > uint32_t attrlen,
> > @@ -4536,7 +4628,8 @@ static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fat
> > if (status < 0)
> > goto xdr_error;
> >
> > - status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
> > + status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
> > + label, server);
> > if (status < 0)
> > goto xdr_error;
> >
> > @@ -4547,9 +4640,9 @@ xdr_error:
> > }
> >
> > static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
> > - const struct nfs_server *server)
> > + struct nfs4_label *label, const struct nfs_server *server)
> > {
> > - return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
> > + return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
> > }
> >
> > /*
> > @@ -5883,7 +5976,7 @@ static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
> > status = decode_open_downgrade(xdr, res);
> > if (status != 0)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -5909,7 +6002,7 @@ static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > status = decode_access(xdr, &res->supported, &res->access);
> > if (status != 0)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -5938,7 +6031,7 @@ static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > status = decode_getfh(xdr, res->fh);
> > if (status)
> > goto out;
> > - status = decode_getfattr(xdr, res->fattr, res->server);
> > + status = decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -5964,7 +6057,8 @@ static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
> > goto out;
> > status = decode_getfh(xdr, res->fh);
> > if (status == 0)
> > - status = decode_getfattr(xdr, res->fattr, res->server);
> > + status = decode_getfattr(xdr, res->fattr,
> > + res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6055,7 +6149,7 @@ static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > status = decode_restorefh(xdr);
> > if (status)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6084,7 +6178,7 @@ static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > status = decode_getfh(xdr, res->fh);
> > if (status)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6116,7 +6210,7 @@ static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > status = decode_putfh(xdr);
> > if (status)
> > goto out;
> > - status = decode_getfattr(xdr, res->fattr, res->server);
> > + status = decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6218,7 +6312,7 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > * an ESTALE error. Shouldn't be a problem,
> > * though, since fattr->valid will remain unset.
> > */
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6249,7 +6343,7 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > goto out;
> > if (res->access_request)
> > decode_access(xdr, &res->access_supported, &res->access_result);
> > - decode_getfattr(xdr, res->f_attr, res->server);
> > + decode_getfattr(xdr, res->f_attr, res->f_label, res->server);
> > out:
> > return status;
> > }
> > @@ -6299,7 +6393,7 @@ static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
> > goto out;
> > if (res->access_request)
> > decode_access(xdr, &res->access_supported, &res->access_result);
> > - decode_getfattr(xdr, res->f_attr, res->server);
> > + decode_getfattr(xdr, res->f_attr, NULL, res->server);
> > out:
> > return status;
> > }
> > @@ -6326,7 +6420,7 @@ static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
> > status = decode_setattr(xdr);
> > if (status)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, res->label, res->server);
> > out:
> > return status;
> > }
> > @@ -6506,7 +6600,7 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
> > if (status)
> > goto out;
> > if (res->fattr)
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, NULL, res->server);
> > if (!status)
> > status = res->count;
> > out:
> > @@ -6687,7 +6781,7 @@ static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
> > status = decode_putfh(xdr);
> > if (status != 0)
> > goto out;
> > - status = decode_getfattr(xdr, res->fattr, res->server);
> > + status = decode_getfattr(xdr, res->fattr, res->label, res->server);
> > if (status != 0)
> > goto out;
> > status = decode_delegreturn(xdr);
> > @@ -6720,7 +6814,7 @@ static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
> > xdr_enter_page(xdr, PAGE_SIZE);
> > status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
> > NULL, res->fs_locations,
> > - res->fs_locations->server);
> > + NULL, res->fs_locations->server);
> > out:
> > return status;
> > }
> > @@ -7001,7 +7095,7 @@ static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
> > status = decode_layoutcommit(xdr, rqstp, res);
> > if (status)
> > goto out;
> > - decode_getfattr(xdr, res->fattr, res->server);
> > + decode_getfattr(xdr, res->fattr, NULL, res->server);
> > out:
> > return status;
> > }
> > @@ -7133,7 +7227,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
> > goto out_overflow;
> >
> > if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
> > - NULL, entry->server) < 0)
> > + NULL, entry->label, entry->server) < 0)
> > goto out_overflow;
> > if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
> > entry->ino = entry->fattr->mounted_on_fileid;
> > diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
> > index 4bdffe0..0ead05b 100644
> > --- a/fs/nfs/pnfs.c
> > +++ b/fs/nfs/pnfs.c
> > @@ -1922,7 +1922,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
> > data->args.inode = inode;
> > data->cred = get_rpccred(nfsi->layout->plh_lc_cred);
> > nfs_fattr_init(&data->fattr);
> > - data->args.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
> > + data->args.bitmask = nfs4_cache_bitmask(NFS_SERVER(inode), NULL);
> > data->res.fattr = &data->fattr;
> > data->args.lastbytewritten = end_pos - 1;
> > data->res.server = NFS_SERVER(inode);
> > diff --git a/fs/nfs/super.c b/fs/nfs/super.c
> > index 00af026..68c42be 100644
> > --- a/fs/nfs/super.c
> > +++ b/fs/nfs/super.c
> > @@ -2379,8 +2379,21 @@ static int nfs_bdi_register(struct nfs_server *server)
> > int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
> > struct nfs_mount_info *mount_info)
> > {
> > - return security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts,
> > - 0, NULL);
> > + int error;
> > + unsigned long kflags = 0, kflags_out = 0;
> > + if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
> > + kflags |= SECURITY_LSM_NATIVE_LABELS;
> > +
> > + error = security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts,
> > + kflags, &kflags_out);
> > + if (error)
> > + goto err;
> > +
> > + if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
> > + !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
> > + NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
> > +err:
> > + return error;
> > }
> > EXPORT_SYMBOL_GPL(nfs_set_sb_security);
> >
> > diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
> > index 1ef8eb4..1510f4f 100644
> > --- a/include/linux/nfs_fs.h
> > +++ b/include/linux/nfs_fs.h
> > @@ -199,6 +199,7 @@ struct nfs_inode {
> > #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */
> > #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */
> > #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */
> > +#define NFS_INO_INVALID_LABEL 0x0080 /* cached label is invalid */
> >
> > /*
> > * Bit offsets in flags field
> > @@ -344,6 +345,8 @@ extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
> > extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping);
> > extern int nfs_setattr(struct dentry *, struct iattr *);
> > extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
> > +extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
> > + struct nfs4_label *label);
> > extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
> > extern void put_nfs_open_context(struct nfs_open_context *ctx);
> > extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode);
> > @@ -502,9 +505,19 @@ static inline void nfs4_label_free(struct nfs4_label *label)
> > }
> > return;
> > }
> > +static inline u32 *nfs4_cache_bitmask(struct nfs_server *server, struct nfs4_label *label)
> > +{
> > + if (label)
> > + return server->cache_consistency_bitmask;
> > +
> > + return server->cache_consistency_bitmask_nl;
> > +}
> > #else
> > static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; }
> > static inline void nfs4_label_free(void *label) {}
> > +static inline u32 *
> > +nfs4_cache_bitmask(struct nfs_server *server, struct nfs4_label *label)
> > +{ return server->cache_consistency_bitmask; }
> > #endif
> >
> > /*
> > diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
> > index e6ed3c2..2a4f1d4 100644
> > --- a/include/linux/nfs_fs_sb.h
> > +++ b/include/linux/nfs_fs_sb.h
> > @@ -145,11 +145,18 @@ struct nfs_server {
> > u32 attr_bitmask[3];/* V4 bitmask representing the set
> > of attributes supported on this
> > filesystem */
> > + u32 attr_bitmask_nl[3];
> > + /* V4 bitmask representing the
> > + set of attributes supported
> > + on this filesystem excluding
> > + the label support bit. */
> > u32 cache_consistency_bitmask[3];
> > /* V4 bitmask representing the subset
> > of change attribute, size, ctime
> > and mtime attributes supported by
> > the server */
> > + u32 cache_consistency_bitmask_nl[3];
> > + /* As above, excluding label. */
> > u32 acl_bitmask; /* V4 bitmask representing the ACEs
> > that are supported on this
> > filesystem */
> > diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> > index d7ff806..f68b577 100644
> > --- a/security/selinux/hooks.c
> > +++ b/security/selinux/hooks.c
> > @@ -2877,7 +2877,10 @@ static void selinux_inode_post_setxattr(struct dentry *dentry, const char *name,
> > return;
> > }
> >
> > + isec->sclass = inode_mode_to_security_class(inode->i_mode);
> > isec->sid = newsid;
> > + isec->initialized = 1;
> > +
> > return;
> > }
> >
> > @@ -2965,6 +2968,7 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
> > if (rc)
> > return rc;
> >
> > + isec->sclass = inode_mode_to_security_class(inode->i_mode);
> > isec->sid = newsid;
> > isec->initialized = 1;
> > return 0;
> > --
> > 1.8.1.4
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
--
James Morris
<jmorris@xxxxxxxxx>
--
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