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| author | Alexandros Batsakis <batsakis@netapp.com> | 2009-12-05 13:48:55 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-12-05 13:48:55 -0500 |
| commit | 2597641deae82c9a95e255518da189ab557da0af (patch) | |
| tree | 0b2dc7c46f2a0398ecefd6bb63a657710cf921fa /fs/nfs/callback_proc.c | |
| parent | 0629e370dd5819efa5cf8d418a8e6729efe388ef (diff) | |
| download | linux-2597641deae82c9a95e255518da189ab557da0af.tar.bz2 | |
nfs41: v2 fix cb_recall bug
in NFSv4.1 the seqid part of a stateid in CB_RECALL must be 0
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/callback_proc.c')
| -rw-r--r-- | fs/nfs/callback_proc.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 61b85306bb25..defa9b4c470e 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -61,6 +61,16 @@ out: return res->status; } +static int (*nfs_validate_delegation_stateid(struct nfs_client *clp))(struct nfs_delegation *, const nfs4_stateid *) +{ +#if defined(CONFIG_NFS_V4_1) + if (clp->cl_minorversion > 0) + return nfs41_validate_delegation_stateid; +#endif + return nfs4_validate_delegation_stateid; +} + + __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) { struct nfs_client *clp; @@ -81,7 +91,8 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) inode = nfs_delegation_find_inode(clp, &args->fh); if (inode != NULL) { /* Set up a helper thread to actually return the delegation */ - switch(nfs_async_inode_return_delegation(inode, &args->stateid)) { + switch (nfs_async_inode_return_delegation(inode, &args->stateid, + nfs_validate_delegation_stateid(clp))) { case 0: res = 0; break; @@ -102,8 +113,31 @@ out: return res; } +int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) +{ + if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data, + sizeof(delegation->stateid.data)) != 0) + return 0; + return 1; +} + #if defined(CONFIG_NFS_V4_1) +int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid) +{ + if (delegation == NULL) + return 0; + + /* seqid is 4-bytes long */ + if (((u32 *) &stateid->data)[0] != 0) + return 0; + if (memcmp(&delegation->stateid.data[4], &stateid->data[4], + sizeof(stateid->data)-4)) + return 0; + + return 1; +} + /* * Validate the sequenceID sent by the server. * Return success if the sequenceID is one more than what we last saw on @@ -255,5 +289,4 @@ out: dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); return status; } - #endif /* CONFIG_NFS_V4_1 */ |