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| author |   Steve Dickson <steved@redhat.com> | 2013-05-22 12:50:40 -0400 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-06-08 16:20:14 -0400 |
| commit | e058f70b8070608fedfd3e39c2ead935beecb552 (patch) | |
| tree | 7edaeed13f64d0218d8541321e2a6c780ee59986 /fs/nfs | |
| parent | NFSv4: Add label recommended attribute and NFSv4 flags (diff) | |
| download | linux-dev-e058f70b8070608fedfd3e39c2ead935beecb552.tar.xz linux-dev-e058f70b8070608fedfd3e39c2ead935beecb552.zip | |
NFSv4: Introduce new label structure
In order to mimic the way that NFSv4 ACLs are implemented we have created a
structure to be used to pass label data up and down the call chain. This patch
adds the new structure and new members to the required NFSv4 call structures.
Signed-off-by: Matthew N. Dodd <Matthew.Dodd@sparta.com>
Signed-off-by: Miguel Rodel Felipe <Rodel_FM@dsi.a-star.edu.sg>
Signed-off-by: Phua Eu Gene <PHUA_Eu_Gene@dsi.a-star.edu.sg>
Signed-off-by: Khin Mi Mi Aung <Mi_Mi_AUNG@dsi.a-star.edu.sg>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/inode.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index c1c7a9d78722..07fcf0b90669 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -257,6 +257,34 @@ nfs_init_locked(struct inode *inode, void *opaque) return 0; } +#ifdef CONFIG_NFS_V4_SECURITY_LABEL +struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) +{ + struct nfs4_label *label = NULL; + int minor_version = server->nfs_client->cl_minorversion; + + if (minor_version < 2) + return label; + + if (!(server->caps & NFS_CAP_SECURITY_LABEL)) + return label; + + label = kzalloc(sizeof(struct nfs4_label), flags); + if (label == NULL) + return ERR_PTR(-ENOMEM); + + label->label = kzalloc(NFS4_MAXLABELLEN, flags); + if (label->label == NULL) { + kfree(label); + return ERR_PTR(-ENOMEM); + } + label->len = NFS4_MAXLABELLEN; + + return label; +} +EXPORT_SYMBOL_GPL(nfs4_label_alloc); +#endif + /* * This is our front-end to iget that looks up inodes by file handle * instead of inode number. |