projects / deliverable / linux.git / blame
| 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 | */ | |
| 8 | #include <linux/config.h> | |
| 9 | #include <linux/nfs4.h> | |
| 10 | #include <linux/nfs_fs.h> | |
| 4ce79717 | 11 | #include "nfs4_fs.h" |
| 1da177e4 LT |
12 | #include "callback.h" |
| 13 | #include "delegation.h" | |
| 14 | ||
| 15 | #define NFSDBG_FACILITY NFSDBG_CALLBACK | |
| 16 | ||
| 17 | unsigned nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res) | |
| 18 | { | |
| 19 | struct nfs4_client *clp; | |
| 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); | |
| 26 | clp = nfs4_find_client(&args->addr->sin_addr); | |
| 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); | |
| 38 | res->change_attr = NFS_CHANGE_ATTR(inode); | |
| 39 | res->ctime = inode->i_ctime; | |
| 40 | res->mtime = inode->i_mtime; | |
| 41 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & | |
| 42 | args->bitmap[0]; | |
| 43 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & | |
| 44 | args->bitmap[1]; | |
| 45 | res->status = 0; | |
| 46 | out_iput: | |
| 47 | up_read(&nfsi->rwsem); | |
| 48 | iput(inode); | |
| 49 | out_putclient: | |
| 50 | nfs4_put_client(clp); | |
| 51 | out: | |
| 52 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status)); | |
| 53 | return res->status; | |
| 54 | } | |
| 55 | ||
| 56 | unsigned nfs4_callback_recall(struct cb_recallargs *args, void *dummy) | |
| 57 | { | |
| 58 | struct nfs4_client *clp; | |
| 59 | struct inode *inode; | |
| 60 | unsigned res; | |
| 61 | ||
| 62 | res = htonl(NFS4ERR_BADHANDLE); | |
| 63 | clp = nfs4_find_client(&args->addr->sin_addr); | |
| 64 | if (clp == NULL) | |
| 65 | goto out; | |
| 66 | inode = nfs_delegation_find_inode(clp, &args->fh); | |
| 67 | if (inode == NULL) | |
| 68 | goto out_putclient; | |
| 69 | /* Set up a helper thread to actually return the delegation */ | |
| 70 | switch(nfs_async_inode_return_delegation(inode, &args->stateid)) { | |
| 71 | case 0: | |
| 72 | res = 0; | |
| 73 | break; | |
| 74 | case -ENOENT: | |
| 75 | res = htonl(NFS4ERR_BAD_STATEID); | |
| 76 | break; | |
| 77 | default: | |
| 78 | res = htonl(NFS4ERR_RESOURCE); | |
| 79 | } | |
| 80 | iput(inode); | |
| 81 | out_putclient: | |
| 82 | nfs4_put_client(clp); | |
| 83 | out: | |
| 84 | dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res)); | |
| 85 | return res; | |
| 86 | } |