diff options
Diffstat (limited to 'fs/nfs/getroot.c')
-rw-r--r-- | fs/nfs/getroot.c | 135 |
1 files changed, 1 insertions, 134 deletions
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index 4ca6f5c8038e..4654ced096a6 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -23,21 +23,15 @@ #include <linux/sunrpc/stats.h> #include <linux/nfs_fs.h> #include <linux/nfs_mount.h> -#include <linux/nfs4_mount.h> #include <linux/lockd/bind.h> #include <linux/seq_file.h> #include <linux/mount.h> -#include <linux/nfs_idmap.h> #include <linux/vfs.h> #include <linux/namei.h> #include <linux/security.h> #include <asm/uaccess.h> -#include "nfs4_fs.h" -#include "delegation.h" -#include "internal.h" - #define NFSDBG_FACILITY NFSDBG_CLIENT /* @@ -62,7 +56,7 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i */ spin_lock(&sb->s_root->d_inode->i_lock); spin_lock(&sb->s_root->d_lock); - list_del_init(&sb->s_root->d_alias); + hlist_del_init(&sb->s_root->d_alias); spin_unlock(&sb->s_root->d_lock); spin_unlock(&sb->s_root->d_inode->i_lock); } @@ -135,130 +129,3 @@ out: nfs_free_fattr(fsinfo.fattr); return ret; } - -#ifdef CONFIG_NFS_V4 - -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 = server->nfs_client->rpc_ops->getroot(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; -} - -/* - * get an NFS4 root dentry from the root filehandle - */ -struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh, - const char *devname) -{ - struct nfs_server *server = NFS_SB(sb); - struct nfs_fattr *fattr = NULL; - struct dentry *ret; - struct inode *inode; - void *name = kstrdup(devname, GFP_KERNEL); - int error; - - dprintk("--> nfs4_get_root()\n"); - - if (!name) - return ERR_PTR(-ENOMEM); - - /* get the info about the server and filesystem */ - error = nfs4_server_capabilities(server, mntfh); - if (error < 0) { - dprintk("nfs_get_root: getcaps error = %d\n", - -error); - kfree(name); - return ERR_PTR(error); - } - - fattr = nfs_alloc_fattr(); - if (fattr == NULL) { - kfree(name); - return ERR_PTR(-ENOMEM); - } - - /* get the actual root for this mount */ - error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr); - if (error < 0) { - dprintk("nfs_get_root: getattr error = %d\n", -error); - ret = ERR_PTR(error); - goto out; - } - - if (fattr->valid & NFS_ATTR_FATTR_FSID && - !nfs_fsid_equal(&server->fsid, &fattr->fsid)) - memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); - - inode = nfs_fhget(sb, mntfh, fattr); - if (IS_ERR(inode)) { - dprintk("nfs_get_root: get root inode failed\n"); - ret = ERR_CAST(inode); - goto out; - } - - error = nfs_superblock_set_dummy_root(sb, inode); - if (error != 0) { - ret = ERR_PTR(error); - goto out; - } - - /* root dentries normally start off anonymous and get spliced in later - * if the dentry tree reaches them; however if the dentry already - * exists, we'll pick it up at this point and use it as the root - */ - ret = d_obtain_alias(inode); - if (IS_ERR(ret)) { - dprintk("nfs_get_root: get root dentry failed\n"); - goto out; - } - - security_d_instantiate(ret, inode); - spin_lock(&ret->d_lock); - if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) { - ret->d_fsdata = name; - name = NULL; - } - spin_unlock(&ret->d_lock); -out: - if (name) - kfree(name); - nfs_free_fattr(fattr); - dprintk("<-- nfs4_get_root()\n"); - return ret; -} - -#endif /* CONFIG_NFS_V4 */ |