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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-09-22 13:39:21 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-09-27 14:35:31 -0400 |
| commit | 8a64c4ef106d17805691e893642912041a622938 (patch) | |
| tree | 2be4f8dad70afde0b2a7d0e802e34c281f9ca791 /fs | |
| parent | 7ebeb7fe74bb855bc76a72154e669f00dc614729 (diff) | |
| download | linux-8a64c4ef106d17805691e893642912041a622938.tar.gz linux-8a64c4ef106d17805691e893642912041a622938.tar.bz2 linux-8a64c4ef106d17805691e893642912041a622938.zip | |
NFSv4.1: Even if the stateid is OK, we may need to recover the open modes
TEST_STATEID only tells you that you have a valid open stateid. It doesn't
tell the client anything about whether or not it holds the required share
locks.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Oleg Drokin <green@linuxhacker.ru>
[Anna: Wrap nfs_open_stateid_recover_openmode in CONFIG_NFS_V4_1 checks]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 79109c84f18d..27120baf1ff3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1387,6 +1387,19 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) nfs4_state_set_mode_locked(state, state->state | fmode); } +#ifdef CONFIG_NFS_V4_1 +static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state) +{ + if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags)) + return true; + if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags)) + return true; + if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags)) + return true; + return false; +} +#endif /* CONFIG_NFS_V4_1 */ + static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) { struct nfs_client *clp = state->owner->so_server->nfs_client; @@ -2589,16 +2602,13 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) int status; if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) { - if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - return NFS_OK; + if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) { + if (nfs4_have_delegation(state->inode, state->state)) + return NFS_OK; + return -NFS4ERR_OPENMODE; + } return -NFS4ERR_BAD_STATEID; } - /* If a state reset has been done, test_stateid is unneeded */ - if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) - return -NFS4ERR_BAD_STATEID; - status = nfs41_test_and_free_expired_stateid(server, stateid, cred); trace_nfs4_test_open_stateid(state, NULL, status); if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { @@ -2608,7 +2618,11 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) clear_bit(NFS_OPEN_STATE, &state->flags); stateid->type = NFS4_INVALID_STATEID_TYPE; } - return status; + if (status != NFS_OK) + return status; + if (nfs_open_stateid_recover_openmode(state)) + return -NFS4ERR_OPENMODE; + return NFS_OK; } static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |