[PATCH] NFS: Add support for NFSv3 ACLs
This adds acl support fo nfs clients via the NFSACL protocol extension, by
implementing the getxattr, listxattr, setxattr, and removexattr iops for the
system.posix_acl_access and system.posix_acl_default attributes. This patch
implements a dumb version that uses no caching (and thus adds some overhead).
(Another patch in this patchset adds caching as well.)
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index d2b5d7e..3a5e442 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -301,6 +301,9 @@
* linux/fs/nfs/file.c
*/
extern struct inode_operations nfs_file_inode_operations;
+#ifdef CONFIG_NFS_V3
+extern struct inode_operations nfs3_file_inode_operations;
+#endif /* CONFIG_NFS_V3 */
extern struct file_operations nfs_file_operations;
extern struct address_space_operations nfs_file_aops;
@@ -316,6 +319,22 @@
}
/*
+ * linux/fs/nfs/xattr.c
+ */
+#ifdef CONFIG_NFS_V3_ACL
+extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t);
+extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t);
+extern int nfs3_setxattr(struct dentry *, const char *,
+ const void *, size_t, int);
+extern int nfs3_removexattr (struct dentry *, const char *name);
+#else
+# define nfs3_listxattr NULL
+# define nfs3_getxattr NULL
+# define nfs3_setxattr NULL
+# define nfs3_removexattr NULL
+#endif
+
+/*
* linux/fs/nfs/direct.c
*/
extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t,
@@ -329,6 +348,9 @@
* linux/fs/nfs/dir.c
*/
extern struct inode_operations nfs_dir_inode_operations;
+#ifdef CONFIG_NFS_V3
+extern struct inode_operations nfs3_dir_inode_operations;
+#endif /* CONFIG_NFS_V3 */
extern struct file_operations nfs_dir_operations;
extern struct dentry_operations nfs_dentry_operations;
@@ -450,6 +472,15 @@
extern void nfs_readdata_release(struct rpc_task *task);
/*
+ * linux/fs/nfs3proc.c
+ */
+#ifdef CONFIG_NFS_V3_ACL
+extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type);
+extern int nfs3_proc_setacl(struct inode *inode, int type,
+ struct posix_acl *acl);
+#endif /* CONFIG_NFS_V3_ACL */
+
+/*
* linux/fs/mount_clnt.c
* (Used only by nfsroot module)
*/
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index fc51645..3d3a305 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -10,6 +10,7 @@
struct nfs_server {
struct rpc_clnt * client; /* RPC client handle */
struct rpc_clnt * client_sys; /* 2nd handle for FSINFO */
+ struct rpc_clnt * client_acl; /* ACL RPC client handle */
struct nfs_rpc_ops * rpc_ops; /* NFS protocol vector */
struct backing_dev_info backing_dev_info;
int flags; /* various flags */
diff --git a/include/linux/nfs_mount.h b/include/linux/nfs_mount.h
index 0071428..659c754 100644
--- a/include/linux/nfs_mount.h
+++ b/include/linux/nfs_mount.h
@@ -58,6 +58,7 @@
#define NFS_MOUNT_KERBEROS 0x0100 /* 3 */
#define NFS_MOUNT_NONLM 0x0200 /* 3 */
#define NFS_MOUNT_BROKEN_SUID 0x0400 /* 4 */
+#define NFS_MOUNT_NOACL 0x0800 /* 4 */
#define NFS_MOUNT_STRICTLOCK 0x1000 /* reserved for NFSv4 */
#define NFS_MOUNT_SECFLAVOUR 0x2000 /* 5 */
#define NFS_MOUNT_FLAGMASK 0xFFFF
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 46b206b..a2bf691 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -2,6 +2,7 @@
#define _LINUX_NFS_XDR_H
#include <linux/sunrpc/xprt.h>
+#include <linux/nfsacl.h>
struct nfs4_fsid {
__u64 major;
@@ -368,6 +369,20 @@
struct page ** pages;
};
+struct nfs3_getaclargs {
+ struct nfs_fh * fh;
+ int mask;
+ struct page ** pages;
+};
+
+struct nfs3_setaclargs {
+ struct inode * inode;
+ int mask;
+ struct posix_acl * acl_access;
+ struct posix_acl * acl_default;
+ struct page ** pages;
+};
+
struct nfs_diropok {
struct nfs_fh * fh;
struct nfs_fattr * fattr;
@@ -491,6 +506,15 @@
int plus;
};
+struct nfs3_getaclres {
+ struct nfs_fattr * fattr;
+ int mask;
+ unsigned int acl_access_count;
+ unsigned int acl_default_count;
+ struct posix_acl * acl_access;
+ struct posix_acl * acl_default;
+};
+
#ifdef CONFIG_NFS_V4
typedef u64 clientid4;
@@ -748,4 +772,7 @@
extern struct rpc_version nfs_version3;
extern struct rpc_version nfs_version4;
+extern struct rpc_version nfsacl_version3;
+extern struct rpc_program nfsacl_program;
+
#endif