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| author | Benny Halevy <bhalevy@panasas.com> | 2009-04-03 08:28:59 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-04-03 17:41:21 -0700 |
| commit | 8daf220a6a83c47b9648c28bb819c14c60bad7f9 (patch) | |
| tree | e762cf2c8f0b31dac96989ac14c4cc8756e1af1d /fs/nfsd/nfssvc.c | |
| parent | 84459a1162801fb84734e5f9e6dc5194f791d69b (diff) | |
| download | linux-8daf220a6a83c47b9648c28bb819c14c60bad7f9.tar.bz2 | |
nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions
Support enabling and disabling nfsv4.1 via /proc/fs/nfsd/versions
by writing the strings "+4.1" or "-4.1" correspondingly.
Use user mode nfs-utils (rpc.nfsd option) to enable.
This will allow us to get rid of CONFIG_NFSD_V4_1
[nfsd41: disable support for minorversion by default]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd/nfssvc.c')
| -rw-r--r-- | fs/nfsd/nfssvc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index b53a098e97a4..e9d57734a348 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -121,6 +121,8 @@ struct svc_program nfsd_program = { }; +u32 nfsd_supported_minorversion; + int nfsd_vers(int vers, enum vers_op change) { if (vers < NFSD_MINVERS || vers >= NFSD_NRVERS) @@ -147,6 +149,28 @@ int nfsd_vers(int vers, enum vers_op change) } return 0; } + +int nfsd_minorversion(u32 minorversion, enum vers_op change) +{ + if (minorversion > NFSD_SUPPORTED_MINOR_VERSION) + return -1; + switch(change) { + case NFSD_SET: + nfsd_supported_minorversion = minorversion; + break; + case NFSD_CLEAR: + if (minorversion == 0) + return -1; + nfsd_supported_minorversion = minorversion - 1; + break; + case NFSD_TEST: + return minorversion <= nfsd_supported_minorversion; + case NFSD_AVAIL: + return minorversion <= NFSD_SUPPORTED_MINOR_VERSION; + } + return 0; +} + /* * Maximum number of nfsd processes */ |