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| author | J. Bruce Fields | 2013-07-09 01:51:44 +0200 |
|---|---|---|
| committer | J. Bruce Fields | 2013-07-12 22:48:52 +0200 |
| commit | 35f7a14fc1180164d6358a5885031fc187ef1bfa (patch) | |
| tree | d1d8d9e04e9e80af818e7ab82ca8307668529da0 /fs/nfsd | |
| parent | lockd: protect nlm_blocked access in nlmsvc_retry_blocked (diff) | |
| download | kernel-qcow2-linux-35f7a14fc1180164d6358a5885031fc187ef1bfa.tar.gz kernel-qcow2-linux-35f7a14fc1180164d6358a5885031fc187ef1bfa.tar.xz kernel-qcow2-linux-35f7a14fc1180164d6358a5885031fc187ef1bfa.zip | |
nfsd4: fix minorversion support interface
You can turn on or off support for minorversions using e.g.
echo "-4.2" >/proc/fs/nfsd/versions
However, the current implementation is a little wonky. For example, the
above will turn off 4.2 support, but it will also turn *on* 4.1 support.
This didn't matter as long as we only had 2 minorversions, which was
true till very recently.
And do a little cleanup here.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 2 | ||||
| -rw-r--r-- | fs/nfsd/nfsd.h | 1 | ||||
| -rw-r--r-- | fs/nfsd/nfssvc.c | 13 |
3 files changed, 8 insertions, 8 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index a7cee864e7b2..0d4c410e4589 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1293,7 +1293,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, * According to RFC3010, this takes precedence over all other errors. */ status = nfserr_minor_vers_mismatch; - if (args->minorversion > nfsd_supported_minorversion) + if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0) goto out; status = nfs41_check_op_ordering(args); diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 2bbd94e51efc..30f34ab02137 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -53,7 +53,6 @@ struct readdir_cd { extern struct svc_program nfsd_program; extern struct svc_version nfsd_version2, nfsd_version3, nfsd_version4; -extern u32 nfsd_supported_minorversion; extern struct mutex nfsd_mutex; extern spinlock_t nfsd_drc_lock; extern unsigned long nfsd_drc_max_mem; diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 6b9f48ca4c25..760c85a6f534 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -116,7 +116,10 @@ struct svc_program nfsd_program = { }; -u32 nfsd_supported_minorversion = 1; +static bool nfsd_supported_minorversions[NFSD_SUPPORTED_MINOR_VERSION + 1] = { + [0] = 1, + [1] = 1, +}; int nfsd_vers(int vers, enum vers_op change) { @@ -151,15 +154,13 @@ int nfsd_minorversion(u32 minorversion, enum vers_op change) return -1; switch(change) { case NFSD_SET: - nfsd_supported_minorversion = minorversion; + nfsd_supported_minorversions[minorversion] = true; break; case NFSD_CLEAR: - if (minorversion == 0) - return -1; - nfsd_supported_minorversion = minorversion - 1; + nfsd_supported_minorversions[minorversion] = false; break; case NFSD_TEST: - return minorversion <= nfsd_supported_minorversion; + return nfsd_supported_minorversions[minorversion]; case NFSD_AVAIL: return minorversion <= NFSD_SUPPORTED_MINOR_VERSION; } |