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NFSv4: Ensure we do not reuse open owner names

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The NFSv4 spec is ambiguous about whether or not it is permissible
to reuse open owner names, so play it safe. This patch adds a timestamp
to the state_owner structure, and combines that with the IDA based
uniquifier.
Fixes a regression whereby the Linux server returns NFS4ERR_BAD_SEQID.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2012-04-20 19:24:51 -04:00
parent 98a2139f4f
commit 95b72eb0bd
5 changed files with 16 additions and 8 deletions
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7
include/linux/nfs_xdr.h
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@@ -312,6 +312,11 @@ struct nfs4_layoutreturn {
int rpc_status;
};
struct stateowner_id {
__u64 create_time;
__u32 uniquifier;
};
/*
* Arguments to the open call.
*/
@@ -321,7 +326,7 @@ struct nfs_openargs {
int open_flags;
fmode_t fmode;
__u64 clientid;
__u64 id;
struct stateowner_id id;
union {
struct {
struct iattr * attrs; /* UNCHECKED, GUARDED */