From 4b580ee3dc00f9828a9a7aad2724f448fdc94075 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 22 Jun 2005 17:16:23 +0000 Subject: [PATCH] NFSv4: ACL support for the NFSv4 client: write Client-side write support for NFSv4 ACLs. Signed-off-by: J. Bruce Fields Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c91c09938a5571..d969dd13e7db88 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -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) { - return -EOPNOTSUPP; + 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, -- cgit 1.2.3-korg