From mboxrd@z Thu Jan 1 00:00:00 1970 From: Trond Myklebust Subject: [PATCH 5/5] NFS: Correct the NFS mount path when following a referral Date: Mon, 22 Jun 2009 15:09:14 -0400 Message-ID: <20090622190914.27923.84173.stgit@heimdal.trondhjem.org> References: <20090622190913.27923.31665.stgit@heimdal.trondhjem.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: Al Viro , Christoph Hellwig , linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Linus Torvalds Return-path: In-Reply-To: <20090622190913.27923.31665.stgit-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> Sender: linux-nfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-fsdevel.vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/super.c | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 8da7e59..daecbad 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2548,6 +2548,27 @@ static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type, return root_mnt; } +static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt) +{ + char *page = (char *) __get_free_page(GFP_KERNEL); + char *devname, *tmp; + + if (page == NULL) + return; + devname = nfs_path(path->mnt->mnt_devname, + path->mnt->mnt_root, path->dentry, + page, PAGE_SIZE); + if (devname == NULL) + goto out_freepage; + tmp = kstrdup(devname, GFP_KERNEL); + if (tmp == NULL) + goto out_freepage; + kfree(mnt->mnt_devname); + mnt->mnt_devname = tmp; +out_freepage: + free_page((unsigned long)page); +} + static int nfs_follow_remote_path(struct vfsmount *root_mnt, const char *export_path, struct vfsmount *mnt_target) { @@ -2574,6 +2595,9 @@ static int nfs_follow_remote_path(struct vfsmount *root_mnt, mnt_target->mnt_sb = s; mnt_target->mnt_root = dget(nd.path.dentry); + /* Correct the device pathname */ + nfs_fix_devname(&nd.path, mnt_target); + path_put(&nd.path); down_write(&s->s_umount); return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html