This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / fs / nfs / callback_proc.c

diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
new file mode 100644 (file)
index 0000000..ece27e4
--- /dev/null
+++ b/fs/nfs/callback_proc.c
@@ -0,0 +1,85 @@
+/*
+ * linux/fs/nfs/callback_proc.c
+ *
+ * Copyright (C) 2004 Trond Myklebust
+ *
+ * NFSv4 callback procedures
+ */
+#include <linux/config.h>
+#include <linux/nfs4.h>
+#include <linux/nfs_fs.h>
+#include "callback.h"
+#include "delegation.h"
+
+#define NFSDBG_FACILITY NFSDBG_CALLBACK
+ 
+unsigned nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res)
+{
+       struct nfs4_client *clp;
+       struct nfs_delegation *delegation;
+       struct nfs_inode *nfsi;
+       struct inode *inode;
+       
+       res->bitmap[0] = res->bitmap[1] = 0;
+       res->status = htonl(NFS4ERR_BADHANDLE);
+       clp = nfs4_find_client(&args->addr->sin_addr);
+       if (clp == NULL)
+               goto out;
+       inode = nfs_delegation_find_inode(clp, &args->fh);
+       if (inode == NULL)
+               goto out_putclient;
+       nfsi = NFS_I(inode);
+       down_read(&nfsi->rwsem);
+       delegation = nfsi->delegation;
+       if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0)
+               goto out_iput;
+       res->size = i_size_read(inode);
+       res->change_attr = NFS_CHANGE_ATTR(inode);
+       res->ctime = inode->i_ctime;
+       res->mtime = inode->i_mtime;
+       res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) &
+               args->bitmap[0];
+       res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) &
+               args->bitmap[1];
+       res->status = 0;
+out_iput:
+       up_read(&nfsi->rwsem);
+       iput(inode);
+out_putclient:
+       nfs4_put_client(clp);
+out:
+       dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status));
+       return res->status;
+}
+
+unsigned nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
+{
+       struct nfs4_client *clp;
+       struct inode *inode;
+       unsigned res;
+       
+       res = htonl(NFS4ERR_BADHANDLE);
+       clp = nfs4_find_client(&args->addr->sin_addr);
+       if (clp == NULL)
+               goto out;
+       inode = nfs_delegation_find_inode(clp, &args->fh);
+       if (inode == NULL)
+               goto out_putclient;
+       /* Set up a helper thread to actually return the delegation */
+       switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
+               case 0:
+                       res = 0;
+                       break;
+               case -ENOENT:
+                       res = htonl(NFS4ERR_BAD_STATEID);
+                       break;
+               default:
+                       res = htonl(NFS4ERR_RESOURCE);
+       }
+       iput(inode);
+out_putclient:
+       nfs4_put_client(clp);
+out:
+       dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res));
+       return res;
+}