1. 11 Oct, 2002 35 commits
    • Neil Brown's avatar
      [PATCH] kNFSd: upcall/update for export tables · 5f8c40c2
      Neil Brown authored
      Add _request and _parse methods for nfsd.fh and
      nfsd.exports tables.
      
      nfsd.fh maps a filehandle-fragment to a path for a client,
      and nfsd.exports maps a path to export options for a client.
      5f8c40c2
    • Neil Brown's avatar
      [PATCH] kNFSd: Impletement ip_map_parse to allow filling auth.unix.ip cache · b07ac7f0
      Neil Brown authored
      a message should be:
         nfsd 10.0.1.1 {Expirydate}  domainname
      
      if domainname is empty, then this is a NEGATIVE entry: that
      IP address will be deined access.
      
      {Expirydate} is seconds since unix epoch.
      e.g.  1036105199 for midnight, halloween.
      b07ac7f0
    • Neil Brown's avatar
      60b00ad8
    • Neil Brown's avatar
      [PATCH] kNFSd: Implement get_word to help in parsing cache updates · 5ce8b167
      Neil Brown authored
      get_word understands both \x and \012 quoting styles.
      5ce8b167
    • Neil Brown's avatar
      [PATCH] kNFSd: Implement ip_map_request for upcalls · 11644e2e
      Neil Brown authored
      This is the first upcall to actually be coded.
      A request will look like:
         nfsd 127.0.0.1
      11644e2e
    • Neil Brown's avatar
      [PATCH] kNFSd: Provide generic code for making an upcall. · a9f2e47f
      Neil Brown authored
      This code enhances 'cache_check' to try to initiate
      an up-call if the cache entry is not up-to-date, and also
      defines add_word and add_hex for formating up-call
      requests.  See rpc-cache.txt for more detail.
      a9f2e47f
    • Neil Brown's avatar
      [PATCH] kNFSd: Create files: /proc/net/rpc/$CACHENAME/channel for... · 04ffa550
      Neil Brown authored
      [PATCH] kNFSd: Create files: /proc/net/rpc/$CACHENAME/channel for communicating cache updates with kernel
      
      Each cache gets it's own 'channel' at
        /proc/net/rpc/$CACHENAME/channel
      
      Reads from the file will return all pending requests, one at a time.
      select will block when at end of file.
      writes will pass full lines in to be processed.
      04ffa550
    • Neil Brown's avatar
      [PATCH] kNFSd: Provide support for request deferral and revisit. · ea221223
      Neil Brown authored
      cache.c gets code to allow a 'request' to be referred pending
      an update of a cache item, and revisited when the item is
      updates.
      
      svcsock.c gets code to store the relevant part of a request on deferral, and
      to re-queue it when the cache item that caused the deferral is
      filled in.
      ea221223
    • Neil Brown's avatar
      [PATCH] kNFSd: decode symlink inplace to avoid modifying request · ac26cbd7
      Neil Brown authored
      Rather than possibly modifying a request (as
      xdr_decode_string can) we use xdr_decode_string_inplace
      to symlink contents.  This string may not be nul terminated
      (though it often is) so in the 'unlikely' event that is isn't
      nul terminated, we copy it into a kmalloced space first.
      
      It might be nice if vfs_symlink took a length, but then every
      filesystem would have to as well....
      ac26cbd7
    • Neil Brown's avatar
      [PATCH] kNFSd: Don't over-write rpc request with response. · 4ed45520
      Neil Brown authored
      We are going to want rpc request to be immutable so that
      we can take a copy and put it aside to be processed later.
      Currently the tcp code writes the response into the same
      buffer as the request, thus corrupting the request.
      With this patch, the response goes after the request.  There should
      always be enough room as large reqeusts (Write) has small
      responses, and large responses (read) are for small requests.
      
      buflen is changed for requests to record the length of the
      request.  It already gets reset for each new request.
      4ed45520
    • Neil Brown's avatar
      [PATCH] kNFSd: Convert export-table to use new cache code · 85d18365
      Neil Brown authored
      This introduces two caches, svc_export_cache (nfsd.exports) and
      svc_expkey_cache (nfsd.fh).
      nfsd.exports maps client+directory  ->  export options.
      nfsd.fh maps client + filehandle-fragment -> directory.
      
      A major part of this change is that export entries are now reference counted,
      so we have to be careful  to keep those counts correct.
      85d18365
    • Neil Brown's avatar
    • Neil Brown's avatar
    • Neil Brown's avatar
      [PATCH] kNFSd: Move auth domain lookup into svcauth · 00ef0ed7
      Neil Brown authored
      Instead of doing the lookup from ipaddr to domain inside
      the nfs server, (and also when lockd calls into nfsd) it is
      now done at the rpc authentication level which is a more
      sensible place for it.
      
      Note that both AUTH_UNIX and AUTH_NULL do the same lookup.
      
      So that the rpc layer knows that nfsd and lockd both uses the
      name space of domains (while other hypothetical services may
      not) we introduce a 'class' for each service which svc_auth combines
      with the IP address when doing a lookup.
      00ef0ed7
    • Neil Brown's avatar
      [PATCH] kNFSd: Use new cache infrastructure for auth_unix specific lookups. · 624361e4
      Neil Brown authored
      This patch introduces two caches using the new infrastucture, and the
      concept of a 'domain'.
      
      A 'domain' refers to a collection of clients that all have the same
      view of the nfs server, and all have the same access rights (modulo
      different users on the clients).  For AUTH_UNIX (and AUTH_NULL), the
      domain is determined from the IP address.  For other authentication
      styles, the domain might be determined directly from the credentials.
      
      Each auth flavour knows how to allocate and free it's domain-specific
      infomation.
      
      auth_domain_cache maps a name to a domain which is owned by
      an auth flavour.
      
      ip_map_cache is a cache specific to AUTH_UNIX which maps
      IP address to domain.
      
      With this patch, svcauth_unix.c is created to store all
      auth_unix related code.
      
      The IP address lookup code is removed from nfsd/exports.c
      
      sunrpc module initilisation is moved out of stats.c into sunrpc_syms
      which seemed to be the most central .c file.  It now registers these
      two caches.
      
      Now that the caches are being used, nfsd needs to call cache_clean
      periodically.
      624361e4
    • Neil Brown's avatar
      [PATCH] kNFSd: Initialial caching infrastructure for RPC authentication caches · f00a9f4d
      Neil Brown authored
      This patch provides a "virtual class" for defining caches
      that make user-space information available in the kernel
      It is intended for RPC services or clients that need user-space
      support for authentication.
      
      As yet, support for userspace interaction isn't included as I want
      that to be able to have separate review.
      f00a9f4d
    • Neil Brown's avatar
      [PATCH] kNFSd: Tidy up the rpc authentication interface. · 7b1c5134
      Neil Brown authored
      Define auth_ops that contains a method for authenticating a request and a
      method for authorising a reply.  Call both methods as appropriate.
      
      Also discard rq_verfed and cr_flavour, neither ever used.
      And discard rq_auth as it isn't needed.
      7b1c5134
    • Neil Brown's avatar
    • Neil Brown's avatar
      [PATCH] kNFSd: Giant patch importing NFSv4 server functionality · b59e9ac5
      Neil Brown authored
      Now that all the hooks are in place, this large patch imports all
      of the new code for the NFSv4 server.
      
      This patch makes almost no changes to the existing nfsd codebase
      (these have been taken care of by the preceding patches).
      
      One aspect of the NFSv4 code deserves comment.  The most natural scheme
      for processing a COMPOUND request would seem to be:
        1a. XDR decode phase, decode args of all operations
        2a. processing phase, process all operations
        3a. XDR encode phase, encode results of all operations
      
      However, we use a scheme which works as follows:
        1b. XDR decode phase, decode args of all operations
        2b. For each operation,
              process the operation
              encode the result
      
      To see what is wrong with the first scheme, consider a COMPOUND
      of the form READ REMOVE.  Since the last bit of processing for
      the READ request occurs in XDR encode, we might discover in step
      3a that the READ request should return an error.  Therefore, the
      REMOVE request should not be processed at all.  This is a fatal
      problem, since the REMOVE was already been done in step 2a!
      
      Another type of problem would occur in a COMPOUND of the form
      READ WRITE.  Assume that both operations succeed.  Under scheme
      (a), the WRITE is actually performed _before_ the READ (since
      the "real" READ is really done during XDR encode).  This is
      certainly incorrect if the READ and WRITE ranges overlap.
      
      These examples might seem a little artificial, but nevertheless
      it does seem that in order to process a COMPOUND correctly in
      all cases, we need to use scheme (b) instead of scheme (a).
      
      (To construct less artificial examples, just substitute GETATTR
       for READ in the examples above.  This works because the "real"
       GETATTR is done during XDR encode: one would really have to
       bend over backwards in order to arrange things otherwise.)
      b59e9ac5
    • Neil Brown's avatar
      [PATCH] kNFSd: Stub support for name lookup · 106c646c
      Neil Brown authored
      NFSv4 need to be able to make from user/group name
      to user/group id.  This include file contains some
      simple stubs to do this.  They will be replaced with
      something that really works later.
      106c646c
    • Neil Brown's avatar
      [PATCH] kNFSd: ensure XDR buffer is large enough for NFSv4 · 700ee9f0
      Neil Brown authored
      This patch changes the 'xdrsize' parameter to svc_create(), to be
           NFS4_SVC_XDRSIZE   if v4 is defined
      else NFS3_SVC_XDRSIZE   if v3 is defined
      else NFS2_SVC_XDRSIZE     (formerly NFSSVC_XDRSIZE)
      
      This always works, since
           NFS4_SVC_XDRSIZE >= NFS3_SVC_XDRSIZE >= NFS2_SVC_XDRSIZE.
      
      The value of NFSD_BUFSIZE has also been moved to const.h, since we need
      the definition available in nfs4proc.c
      700ee9f0
    • Neil Brown's avatar
      [PATCH] kNFSd: New routine exp_pseudoroot() to find 'root' filehandle for nfsv4 · bbe0c3d9
      Neil Brown authored
      NFSv4 has a concept of a 'root' filehandle (from which all other can
      be found via LOOKUP, so no need for mountd).
      
      This patch defines exp_pseudoroot(), which is used to set the filehandle
      for the root of the pseudofs. The root is defined to be the export
      point with fsid == 0.
      bbe0c3d9
    • Neil Brown's avatar
      [PATCH] kNFSd: new routine fh_dup2() · 38782482
      Neil Brown authored
      Define fh_dup2(), which copies a _verified_ filehandle, taking care
      of refcounts accordingly.  (This will be used by RESTOREFH/SAVEFH and
      a few other places.)
      38782482
    • Neil Brown's avatar
      18d9355d
    • Neil Brown's avatar
      [PATCH] kNFSd: header file for NFSv4 XDR · 9b831fb9
      Neil Brown authored
      Instantiate a new file include/linux/nfsd/xdr4.h (server-side XDR for
      NFSv4).
      9b831fb9
    • Neil Brown's avatar
      [PATCH] kNFSd: pre-zero response for lockd _msg requests. · 930357a9
      Neil Brown authored
      All the lockd *_msg requests are implemented by
      calling the equivalent non- *_msg request and sending off
      the response as a new message (*_res).
      
      For the non- *_msg requests, the response buffer is
      pre-zeroed by the RPC layer, but the *_msg handlers weren't
      pre-zeroing the buffer, would could in some circumstances lead to
      an Oops.
      
      Now we pre-zero them all.
      930357a9
    • Neil Brown's avatar
      [PATCH] kNFSd: A couple of possible incorrect calls to dput.... · 7fffa27d
      Neil Brown authored
      Thanks to Hirokazu Takahashi <taka@valinux.co.jp>
      7fffa27d
    • Neil Brown's avatar
      [PATCH] kNFSd: Use correct value for max size for readlink response. · 9b2ae623
      Neil Brown authored
      Symlinks in NFSv3 can be upto 1024 bytes, not 256 like nfsv2.
      9b2ae623
    • Neil Brown's avatar
      [PATCH] kNFSd: Remove the nfs-devel list from MAINTAINERS · ba1dd456
      Neil Brown authored
      It only gets spam these days...
      ba1dd456
    • Linus Torvalds's avatar
      Merge bk://linux-bt.bkbits.net/bt-2.5 · 5665c2a2
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      5665c2a2
    • Luca Tettamanti's avatar
      b8041f7b
    • Luca Tettamanti's avatar
      19516634
    • Luca Tettamanti's avatar
      96123596
    • Luca Tettamanti's avatar
      6e23d74a
    • Linus Torvalds's avatar
      Merge bk://bk.arm.linux.org.uk · 3ef3aca5
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      3ef3aca5
  2. 12 Oct, 2002 1 commit
  3. 11 Oct, 2002 4 commits