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2010-05-14NFS: Squelch compiler warning in nfs_add_server_stats()Chuck Lever
Clean up: fs/nfs/iostat.h: In function ‘nfs_add_server_stats’: fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions Commit fce22848 replaced the open-coded per-cpu logic in several functions in fs/nfs/iostat.h with a single invocation of this_cpu_ptr(). This macro assumes its second argument is signed, not unsigned. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Clean up fscache_uniq mount optionChuck Lever
Clean up: fscache_uniq takes a string, so it should be included with the other string mount option definitions, by convention. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Squelch compiler warningChuck Lever
Seen with -Wextra: /home/cel/linux/fs/nfs/fscache.c: In function ‘__nfs_readpages_from_fscache’: /home/cel/linux/fs/nfs/fscache.c:479: warning: comparison between signed and unsigned integer expressions The comparison implicitly converts "int" to "unsigned", making it safe. But there's no need for the implicit type conversions here, and the dfprintk() already uses a "%u" formatter for "npages." Better to reduce confusion. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14SUNRPC: Trivial cleanups in include/linux/sunrpc/xdr.hChuck Lever
Clean up: Update the documenting comment, and fix some minor white space issues. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Clean up the NFSv4 setclientid operationTrond Myklebust
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Allow attribute caching with 'noac' mounts if client holds a delegationTrond Myklebust
If the server has given us a delegation on a file, we _know_ that we can cache the attribute information even when the user has specified 'noac'. Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14SUNRPC: Fail over more quickly on connect errorsTrond Myklebust
We should not allow soft tasks to wait for longer than the major timeout period when waiting for a reconnect to occur. Remove the field xprt->connect_timeout since it has been obsoleted by xprt->reestablish_timeout. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14SUNRPC: Move the test for XPRT_CONNECTING into xprt_connect()Trond Myklebust
This fixes a bug with setting xprt->stat.connect_start. Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14SUNRPC: Cleanup - make rpc_new_task() call rpc_release_calldata on failureTrond Myklebust
Also have it return an ERR_PTR(-ENOMEM) instead of a null pointer. Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14SUNRPC: Clean up xprt_release()Trond Myklebust
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Fix up the documentation for nfs_do_refmountTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Replace nfsroot on-stack filehandleTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Cleanup file handle allocations in fs/nfs/super.cTrond Myklebust
Use the new helper functions instead of open coding. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Prevent the mount code from looping forever on broken exportsTrond Myklebust
Keep a global count of how many referrals that the current task has traversed on a path lookup. Return ELOOP if the count exceeds MAX_NESTED_LINKS. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_getacl() and nfs3_proc_setacl()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_statfs()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_setattr()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs4_proc_create()Trond Myklebust
Move the O_EXCL open handling into _nfs4_do_open() where it belongs. Doing so also allows us to reuse the struct fattr from the opendata. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_proc_symlink()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_proc_createTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_rmdirTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_proc_remove()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_readlink()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_link()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_readdir()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_rename() and nfs4_proc_rename()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_revalidate_inode()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Reduce stack footprint of nfs4_proc_access() and nfs3_proc_access()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Reduce the stack footprint of nfs4_remote_referral_get_sbTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Reduce stack footprint of nfs4_get_root()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_follow_remote_path()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_lookupTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Reduce the stack footprint of try_location()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_create_serverTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_follow_mountpoint()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Eliminate nfs4_path_walk()Trond Myklebust
All we really want is the ability to retrieve the root file handle. We no longer need the ability to walk down the path, since that is now done in nfs_follow_remote_path(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Add helper functions for allocating filehandles and fattr structsTrond Myklebust
NFS Filehandles and struct fattr are really too large to be allocated on the stack. This patch adds in a couple of helper functions to allocate them dynamically instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Advertise rc4-hmac enctype support in the rpcsec_gss/krb5 upcallTrond Myklebust
Update the upcall info indicating which Kerberos enctypes the kernel supports Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Add support for rc4-hmac encryptionKevin Coffman
Add necessary changes to add kernel support for the rc4-hmac Kerberos encryption type used by Microsoft and described in rfc4757. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Use confounder length in wrap codeKevin Coffman
All encryption types use a confounder at the beginning of the wrap token. In all encryption types except arcfour-hmac, the confounder is the same as the blocksize. arcfour-hmac has a blocksize of one, but uses an eight byte confounder. Add an entry to the crypto framework definitions for the confounder length and change the wrap/unwrap code to use the confounder length rather than assuming it is always the blocksize. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gssd_krb5: More arcfour-hmac supportKevin Coffman
For the arcfour-hmac support, the make_seq_num and get_seq_num functions need access to the kerberos context structure. This will be used in a later patch. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Save the raw session key in the contextKevin Coffman
This is needed for deriving arcfour-hmac keys "on the fly" using the sequence number or checksu Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gssd_krb5: arcfour-hmac supportKevin Coffman
For arcfour-hmac support, the make_checksum function needs a usage field to correctly calculate the checksum differently for MIC and WRAP tokens. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Advertise AES enctype support in the rpcsec_gss/krb5 upcallTrond Myklebust
Update upcall info indicating which Kerberos enctypes the kernel supports Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: add remaining pieces to enable AES encryption supportKevin Coffman
Add the remaining pieces to enable support for Kerberos AES encryption types. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: add support for new token formats in rfc4121Kevin Coffman
This is a step toward support for AES encryption types which are required to use the new token formats defined in rfc4121. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> [SteveD: Fixed a typo in gss_verify_mic_v2()] Signed-off-by: Steve Dickson <steved@redhat.com> [Trond: Got rid of the TEST_ROTATE/TEST_EXTRA_COUNT crap] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14xdr: Add an export for the helper function write_bytes_to_xdr_buf()Kevin Coffman
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Advertise triple-des enctype support in the rpcsec_gss/krb5 upcallTrond Myklebust
Update the upcall info indicating which Kerberos enctypes the kernel supports. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: add support for triple-des encryptionKevin Coffman
Add the final pieces to support the triple-des encryption type. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14gss_krb5: Add upcall info indicating supported kerberos enctypesTrond Myklebust
The text based upcall now indicates which Kerberos encryption types are supported by the kernel rpcsecgss code. This is used by gssd to determine which encryption types it should attempt to negotiate when creating a context with a server. The server principal's database and keytab encryption types are what limits what it should negotiate. Therefore, its keytab should be created with only the enctypes listed by this file. Currently we support des-cbc-crc, des-cbc-md4 and des-cbc-md5 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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