Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/callback_proc.c | |
3 | * | |
4 | * Copyright (C) 2004 Trond Myklebust | |
5 | * | |
6 | * NFSv4 callback procedures | |
7 | */ | |
1da177e4 LT |
8 | #include <linux/nfs4.h> |
9 | #include <linux/nfs_fs.h> | |
4ce79717 | 10 | #include "nfs4_fs.h" |
1da177e4 LT |
11 | #include "callback.h" |
12 | #include "delegation.h" | |
24c8dbbb | 13 | #include "internal.h" |
1da177e4 LT |
14 | |
15 | #define NFSDBG_FACILITY NFSDBG_CALLBACK | |
16 | ||
e6f684f6 | 17 | __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res) |
1da177e4 | 18 | { |
adfa6f98 | 19 | struct nfs_client *clp; |
1da177e4 LT |
20 | struct nfs_delegation *delegation; |
21 | struct nfs_inode *nfsi; | |
22 | struct inode *inode; | |
23 | ||
24 | res->bitmap[0] = res->bitmap[1] = 0; | |
25 | res->status = htonl(NFS4ERR_BADHANDLE); | |
24c8dbbb | 26 | clp = nfs_find_client(args->addr, 4); |
1da177e4 LT |
27 | if (clp == NULL) |
28 | goto out; | |
29 | inode = nfs_delegation_find_inode(clp, &args->fh); | |
30 | if (inode == NULL) | |
31 | goto out_putclient; | |
32 | nfsi = NFS_I(inode); | |
33 | down_read(&nfsi->rwsem); | |
34 | delegation = nfsi->delegation; | |
35 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) | |
36 | goto out_iput; | |
37 | res->size = i_size_read(inode); | |
beb2a5ec TM |
38 | res->change_attr = delegation->change_attr; |
39 | if (nfsi->npages != 0) | |
40 | res->change_attr++; | |
1da177e4 LT |
41 | res->ctime = inode->i_ctime; |
42 | res->mtime = inode->i_mtime; | |
43 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
44 | args->bitmap[0]; | |
45 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
46 | args->bitmap[1]; | |
47 | res->status = 0; | |
48 | out_iput: | |
49 | up_read(&nfsi->rwsem); | |
50 | iput(inode); | |
51 | out_putclient: | |
24c8dbbb | 52 | nfs_put_client(clp); |
1da177e4 LT |
53 | out: |
54 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status)); | |
55 | return res->status; | |
56 | } | |
57 | ||
e6f684f6 | 58 | __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) |
1da177e4 | 59 | { |
adfa6f98 | 60 | struct nfs_client *clp; |
1da177e4 | 61 | struct inode *inode; |
e6f684f6 | 62 | __be32 res; |
1da177e4 LT |
63 | |
64 | res = htonl(NFS4ERR_BADHANDLE); | |
24c8dbbb | 65 | clp = nfs_find_client(args->addr, 4); |
1da177e4 LT |
66 | if (clp == NULL) |
67 | goto out; | |
68 | inode = nfs_delegation_find_inode(clp, &args->fh); | |
69 | if (inode == NULL) | |
70 | goto out_putclient; | |
71 | /* Set up a helper thread to actually return the delegation */ | |
72 | switch(nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
73 | case 0: | |
74 | res = 0; | |
75 | break; | |
76 | case -ENOENT: | |
77 | res = htonl(NFS4ERR_BAD_STATEID); | |
78 | break; | |
79 | default: | |
80 | res = htonl(NFS4ERR_RESOURCE); | |
81 | } | |
82 | iput(inode); | |
83 | out_putclient: | |
24c8dbbb | 84 | nfs_put_client(clp); |
1da177e4 LT |
85 | out: |
86 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res)); | |
87 | return res; | |
88 | } |