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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-08-17 08:57:56 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-08-17 09:01:08 +0200
commita22ddff8bedfe33eeb1330bbb7ef1fbe007a42c4 (patch)
tree61a2eb7fa62f5af10c2b913ca429e6b068b0eb2d /fs/nfs/nfs4getroot.c
parentdrm/i915: don't grab dev->struct_mutex for userspace forcewak (diff)
parentLinux 3.6-rc2 (diff)
downloadlinux-dev-a22ddff8bedfe33eeb1330bbb7ef1fbe007a42c4.tar.xz
linux-dev-a22ddff8bedfe33eeb1330bbb7ef1fbe007a42c4.zip
Merge tag 'v3.6-rc2' into drm-intel-next
Backmerge Linux 3.6-rc2 to resolve a few funny conflicts before we put even more madness on top: - drivers/gpu/drm/i915/i915_irq.c: Just a spurious WARN removed in -fixes, that has been changed in a variable-rename in -next, too. - drivers/gpu/drm/i915/intel_ringbuffer.c: -next remove scratch_addr (since all their users have been extracted in another fucntion), -fixes added another user for a hw workaroudn. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'fs/nfs/nfs4getroot.c')
-rw-r--r--fs/nfs/nfs4getroot.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/fs/nfs/nfs4getroot.c b/fs/nfs/nfs4getroot.c
new file mode 100644
index 000000000000..6a83780e0ce6
--- /dev/null
+++ b/fs/nfs/nfs4getroot.c
@@ -0,0 +1,49 @@
+/*
+* 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;
+}