Commit 4b580ee3 authored by J. Bruce Fields's avatar J. Bruce Fields Committed by Trond Myklebust
Browse files

[PATCH] NFSv4: ACL support for the NFSv4 client: write 



 Client-side write support for NFSv4 ACLs.

 Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
 Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 23ec6965

fs/nfs/nfs4proc.c

+33 −1
Original line number Diff line number Diff line
@@ -2216,6 +2216,29 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) 
	return ret;

}



static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)

{

	struct nfs_server *server = NFS_SERVER(inode);

	struct page *pages[NFS4ACL_MAXPAGES];

	struct nfs_setaclargs arg = {

		.fh		= NFS_FH(inode),

		.acl_pages	= pages,

		.acl_len	= buflen,

	};

	struct rpc_message msg = {

		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_SETACL],

		.rpc_argp	= &arg,

		.rpc_resp	= NULL,

	};

	int ret;



	if (!nfs4_server_supports_acls(server))

		return -EOPNOTSUPP;

	buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);

	ret = rpc_call_sync(NFS_SERVER(inode)->client, &msg, 0);

	return ret;

}



static int

nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server)

{
@@ -2792,7 +2815,16 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) 
int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,

		size_t buflen, int flags)

{

	struct inode *inode = dentry->d_inode;



	if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)

		return -EOPNOTSUPP;



	if (!S_ISREG(inode->i_mode) &&

	    (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX))

		return -EPERM;



	return nfs4_proc_set_acl(inode, buf, buflen);

}



/* The getxattr man page suggests returning -ENODATA for unknown attributes,