Commit | Line | Data |
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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" | |
13 | ||
14 | #define NFSDBG_FACILITY NFSDBG_CALLBACK | |
15 | ||
16 | unsigned nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res) | |
17 | { | |
18 | struct nfs4_client *clp; | |
19 | struct nfs_delegation *delegation; | |
20 | struct nfs_inode *nfsi; | |
21 | struct inode *inode; | |
22 | ||
23 | res->bitmap[0] = res->bitmap[1] = 0; | |
24 | res->status = htonl(NFS4ERR_BADHANDLE); | |
25 | clp = nfs4_find_client(&args->addr->sin_addr); | |
26 | if (clp == NULL) | |
27 | goto out; | |
28 | inode = nfs_delegation_find_inode(clp, &args->fh); | |
29 | if (inode == NULL) | |
30 | goto out_putclient; | |
31 | nfsi = NFS_I(inode); | |
32 | down_read(&nfsi->rwsem); | |
33 | delegation = nfsi->delegation; | |
34 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) | |
35 | goto out_iput; | |
36 | res->size = i_size_read(inode); | |
beb2a5ec TM |
37 | res->change_attr = delegation->change_attr; |
38 | if (nfsi->npages != 0) | |
39 | res->change_attr++; | |
1da177e4 LT |
40 | res->ctime = inode->i_ctime; |
41 | res->mtime = inode->i_mtime; | |
42 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
43 | args->bitmap[0]; | |
44 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
45 | args->bitmap[1]; | |
46 | res->status = 0; | |
47 | out_iput: | |
48 | up_read(&nfsi->rwsem); | |
49 | iput(inode); | |
50 | out_putclient: | |
51 | nfs4_put_client(clp); | |
52 | out: | |
53 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status)); | |
54 | return res->status; | |
55 | } | |
56 | ||
57 | unsigned nfs4_callback_recall(struct cb_recallargs *args, void *dummy) | |
58 | { | |
59 | struct nfs4_client *clp; | |
60 | struct inode *inode; | |
61 | unsigned res; | |
62 | ||
63 | res = htonl(NFS4ERR_BADHANDLE); | |
64 | clp = nfs4_find_client(&args->addr->sin_addr); | |
65 | if (clp == NULL) | |
66 | goto out; | |
67 | inode = nfs_delegation_find_inode(clp, &args->fh); | |
68 | if (inode == NULL) | |
69 | goto out_putclient; | |
70 | /* Set up a helper thread to actually return the delegation */ | |
71 | switch(nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
72 | case 0: | |
73 | res = 0; | |
74 | break; | |
75 | case -ENOENT: | |
76 | res = htonl(NFS4ERR_BAD_STATEID); | |
77 | break; | |
78 | default: | |
79 | res = htonl(NFS4ERR_RESOURCE); | |
80 | } | |
81 | iput(inode); | |
82 | out_putclient: | |
83 | nfs4_put_client(clp); | |
84 | out: | |
85 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res)); | |
86 | return res; | |
87 | } |