50 строки
1.2 KiB
C
50 строки
1.2 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/nfs_fs.h>
|
||
|
|
#include "nfs4_fs.h"
|
||
|
|
|
||
|
|
#define NFSDBG_FACILITY NFSDBG_CLIENT
|
||
|
|
|
||
|
|
int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
|
||
|
|
{
|
||
|
|
struct nfs_fsinfo fsinfo;
|
||
|
|
int ret = -ENOMEM;
|
||
|
|
|
||
|
|
dprintk("--> nfs4_get_rootfh()\n");
|
||
|
|
|
||
|
|
fsinfo.fattr = nfs_alloc_fattr();
|
||
|
|
if (fsinfo.fattr == NULL)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
/* Start by getting the root filehandle from the server */
|
||
|
|
ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo);
|
||
|
|
if (ret < 0) {
|
||
|
|
dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
|
||
|
|
|| !S_ISDIR(fsinfo.fattr->mode)) {
|
||
|
|
printk(KERN_ERR "nfs4_get_rootfh:"
|
||
|
|
" getroot encountered non-directory\n");
|
||
|
|
ret = -ENOTDIR;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
|
||
|
|
printk(KERN_ERR "nfs4_get_rootfh:"
|
||
|
|
" getroot obtained referral\n");
|
||
|
|
ret = -EREMOTE;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
|
||
|
|
out:
|
||
|
|
nfs_free_fattr(fsinfo.fattr);
|
||
|
|
dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
|
||
|
|
return ret;
|
||
|
|
}
|