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* SUNRPC: RPC callbacks may be split across several TCP segmentsTrond Myklebust2014-02-111-1/+2
| | | | | | | | | | | | | Since TCP is a stream protocol, our callback read code needs to take into account the fact that RPC callbacks are not always confined to a single TCP segment. This patch adds support for multiple TCP segments by ensuring that we only remove the rpc_rqst structure from the 'free backchannel requests' list once the data has been completely received. We rely on the fact that TCP data is ordered for the duration of the connection. Reported-by: shaobingqing <shaobingqing@bwstor.com.cn> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* Merge branch 'for-3.14' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2014-01-301-2/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull nfsd updates from Bruce Fields: - Handle some loose ends from the vfs read delegation support. (For example nfsd can stop breaking leases on its own in a fewer places where it can now depend on the vfs to.) - Make life a little easier for NFSv4-only configurations (thanks to Kinglong Mee). - Fix some gss-proxy problems (thanks Jeff Layton). - miscellaneous bug fixes and cleanup * 'for-3.14' of git://linux-nfs.org/~bfields/linux: (38 commits) nfsd: consider CLAIM_FH when handing out delegation nfsd4: fix delegation-unlink/rename race nfsd4: delay setting current_fh in open nfsd4: minor nfs4_setlease cleanup gss_krb5: use lcm from kernel lib nfsd4: decrease nfsd4_encode_fattr stack usage nfsd: fix encode_entryplus_baggage stack usage nfsd4: simplify xdr encoding of nfsv4 names nfsd4: encode_rdattr_error cleanup nfsd4: nfsd4_encode_fattr cleanup minor svcauth_gss.c cleanup nfsd4: better VERIFY comment nfsd4: break only delegations when appropriate NFSD: Fix a memory leak in nfsd4_create_session sunrpc: get rid of use_gssp_lock sunrpc: fix potential race between setting use_gss_proxy and the upcall rpc_clnt sunrpc: don't wait for write before allowing reads from use-gss-proxy file nfsd: get rid of unused function definition Define op_iattr for nfsd4_open instead using macro NFSD: fix compile warning without CONFIG_NFSD_V3 ...
| * SUNRPC/NFSD: Support a new option for ignoring the result of svc_registerKinglong Mee2014-01-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFSv4 clients can contact port 2049 directly instead of needing the portmapper. Therefore a failure to register to the portmapper when starting an NFSv4-only server isn't really a problem. But Gareth Williams reports that an attempt to start an NFSv4-only server without starting portmap fails: #rpc.nfsd -N 2 -N 3 rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused) rpc.nfsd: unable to set any sockets for nfsd Add a flag to svc_version to tell the rpc layer it can safely ignore an rpcbind failure in the NFSv4-only case. Reported-by: Gareth Williams <gareth@garethwilliams.me.uk> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| * sunrpc: fix some typosWeng Meiling2013-12-101-1/+1
| | | | | | | | | | Signed-off-by: Weng Meiling <wengmeiling.weng@huawei.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | sunrpc: replace sunrpc_net->gssd_running flag with a more reliable checkJeff Layton2013-12-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have a more reliable method to tell if gssd is running, we can replace the sn->gssd_running flag with a function that will query to see if it's up and running. There's also no need to attempt an upcall that we know will fail, so just return -EACCES if gssd isn't running. Finally, fix the warn_gss() message not to claim that that the upcall timed out since we don't necesarily perform one now when gssd isn't running, and remove the extraneous newline from the message. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | sunrpc: create a new dummy pipe for gssd to hold openJeff Layton2013-12-061-1/+2
|/ | | | | | | | | | | | | | | | rpc.gssd will naturally hold open any pipe named */clnt*/gssd that shows up under rpc_pipefs. That behavior gives us a reliable mechanism to tell whether it's actually running or not. Create a new toplevel "gssd" directory in rpc_pipefs when it's mounted. Under that directory create another directory called "clntXX", and then within that a pipe called "gssd". We'll never send an upcall along that pipe, and any downcall written to it will just return -EINVAL. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Add a helper to switch the transport of an rpc_clntTrond Myklebust2013-10-281-0/+4
| | | | | | | | | | Add an RPC client API to redirect an rpc_clnt's transport from a source server to a destination server during a migration event. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [ cel: forward ported to 3.12 ] Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Add RPC task and client level options to disable the resend timeoutTrond Myklebust2013-10-012-0/+3
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Clean up - convert xprt_prepare_transmit to return a boolTrond Myklebust2013-10-011-1/+1
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'nfsd-next' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2013-09-102-3/+20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull nfsd updates from Bruce Fields: "This was a very quiet cycle! Just a few bugfixes and some cleanup" * 'nfsd-next' of git://linux-nfs.org/~bfields/linux: rpc: let xdr layer allocate gssproxy receieve pages rpc: fix huge kmalloc's in gss-proxy rpc: comment on linux_cred encoding, treat all as unsigned rpc: clean up decoding of gssproxy linux creds svcrpc: remove unused rq_resused nfsd4: nfsd4_create_clid_dir prints uninitialized data nfsd4: fix leak of inode reference on delegation failure Revert "nfsd: nfs4_file_get_access: need to be more careful with O_RDWR" sunrpc: prepare NFS for 2038 nfsd4: fix setlease error return nfsd: nfs4_file_get_access: need to be more careful with O_RDWR
| * svcrpc: remove unused rq_resusedJ. Bruce Fields2013-08-301-1/+0
| | | | | | | | | | | | | | | | I forgot to remove this in afc59400d6c65bad66d4ad0b2daf879cbff8e23e "nfsd4: cleanup: replace rq_resused count by rq_next_page pointer". Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| * Merge tag 'v3.11-rc5' into for-3.12 branchJ. Bruce Fields2013-08-301-0/+1
| |\ | | | | | | | | | | | | | | | For testing purposes I want some nfs and nfsd bugfixes (specifically, 58cd57bfd9db3bc213bf9d6a10920f82095f0114 and previous nfsd patches, and Trond's 4f3cc4809a98a165a9708b72b47de71643797bbd).
| * | sunrpc: prepare NFS for 2038Harshula Jayasuriya2013-08-191-2/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) The kernel sunrpc code needs to handle seconds since epoch greater than 2147483647. This means functions that parse time as an int need to handle it as time_t. 2) The kernel changes must be accompanied by userspace changes in nfs-utils. Signed-off-by: Harshula Jayasuriya <harshula@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | | Merge tag 'nfs-for-3.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2013-09-094-9/+66
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Trond Myklebust: "Highlights include: - Fix NFSv4 recovery so that it doesn't recover lost locks in cases such as lease loss due to a network partition, where doing so may result in data corruption. Add a kernel parameter to control choice of legacy behaviour or not. - Performance improvements when 2 processes are writing to the same file. - Flush data to disk when an RPCSEC_GSS session timeout is imminent. - Implement NFSv4.1 SP4_MACH_CRED state protection to prevent other NFS clients from being able to manipulate our lease and file locking state. - Allow sharing of RPCSEC_GSS caches between different rpc clients. - Fix the broken NFSv4 security auto-negotiation between client and server. - Fix rmdir() to wait for outstanding sillyrename unlinks to complete - Add a tracepoint framework for debugging NFSv4 state recovery issues. - Add tracing to the generic NFS layer. - Add tracing for the SUNRPC socket connection state. - Clean up the rpc_pipefs mount/umount event management. - Merge more patches from Chuck in preparation for NFSv4 migration support" * tag 'nfs-for-3.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (107 commits) NFSv4: use mach cred for SECINFO_NO_NAME w/ integrity NFS: nfs_compare_super shouldn't check the auth flavour unless 'sec=' was set NFSv4: Allow security autonegotiation for submounts NFSv4: Disallow security negotiation for lookups when 'sec=' is specified NFSv4: Fix security auto-negotiation NFS: Clean up nfs_parse_security_flavors() NFS: Clean up the auth flavour array mess NFSv4.1 Use MDS auth flavor for data server connection NFS: Don't check lock owner compatability unless file is locked (part 2) NFS: Don't check lock owner compatibility in writes unless file is locked nfs4: Map NFS4ERR_WRONG_CRED to EPERM nfs4.1: Add SP4_MACH_CRED write and commit support nfs4.1: Add SP4_MACH_CRED stateid support nfs4.1: Add SP4_MACH_CRED secinfo support nfs4.1: Add SP4_MACH_CRED cleanup support nfs4.1: Add state protection handler nfs4.1: Minimal SP4_MACH_CRED implementation SUNRPC: Replace pointer values with task->tk_pid and rpc_clnt->cl_clid SUNRPC: Add an identifier for struct rpc_clnt SUNRPC: Ensure rpc_task->tk_pid is available for tracepoints ...
| * | SUNRPC: Add an identifier for struct rpc_clntTrond Myklebust2013-09-051-0/+1
| | | | | | | | | | | | | | | | | | Add an identifier in order to aid debugging. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Ensure rpc_task->tk_pid is available for tracepointsTrond Myklebust2013-09-041-1/+1
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC new rpc_credops to test credential expiryAndy Adamson2013-09-031-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides the RPC layer helper functions to allow NFS to manage data in the face of expired credentials - such as avoiding buffered WRITEs and COMMITs when the gss context will expire before the WRITEs are flushed and COMMITs are sent. These helper functions enable checking the expiration of an underlying credential key for a generic rpc credential, e.g. the gss_cred gss context gc_expiry which for Kerberos is set to the remaining TGT lifetime. A new rpc_authops key_timeout is only defined for the generic auth. A new rpc_credops crkey_to_expire is only defined for the generic cred. A new rpc_credops crkey_timeout is only defined for the gss cred. Set a credential key expiry watermark, RPC_KEY_EXPIRE_TIMEO set to 240 seconds as a default and can be set via a module parameter as we need to ensure there is time for any dirty data to be flushed. If key_timeout is called on a credential with an underlying credential key that will expire within watermark seconds, we set the RPC_CRED_KEY_EXPIRE_SOON flag in the generic_cred acred so that the NFS layer can clean up prior to key expiration. Checking a generic credential's underlying credential involves a cred lookup. To avoid this lookup in the normal case when the underlying credential has a key that is valid (before the watermark), a notify flag is set in the generic credential the first time the key_timeout is called. The generic credential then stops checking the underlying credential key expiry, and the underlying credential (gss_cred) match routine then checks the key expiration upon each normal use and sets a flag in the associated generic credential only when the key expiration is within the watermark. This in turn signals the generic credential key_timeout to perform the extra credential lookup thereafter. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a helper to allow sharing of rpc_pipefs directory objectsTrond Myklebust2013-09-011-0/+6
| | | | | | | | | | | | | | | | | | | | | Add support for looking up existing objects and creating new ones if there is no match. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove the rpc_client->cl_dentryTrond Myklebust2013-09-012-2/+1
| | | | | | | | | | | | | | | | | | It is now redundant. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove the obsolete auth-only interface for pipefs dentry managementTrond Myklebust2013-09-011-2/+0
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a framework to clean up management of rpc_pipefs directoriesTrond Myklebust2013-08-302-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current system requires everyone to set up notifiers, manage directory locking, etc. What we really want to do is have the rpc_client create its directory, and then create all the entries. This patch will allow the RPCSEC_GSS and NFS code to register all the objects that they want to have appear in the directory, and then have the sunrpc code call them back to actually create/destroy their pipefs dentries when the rpc_client creates/destroys the parent. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Replace clnt->cl_principalTrond Myklebust2013-08-302-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | The clnt->cl_principal is being used exclusively to store the service target name for RPCSEC_GSS/krb5 callbacks. Replace it with something that is stored only in the RPCSEC_GSS-specific code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove unused struct rpc_clnt field cl_protnameTrond Myklebust2013-08-301-1/+0
| |/ | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* / SUNRPC: If the rpcbind channel is disconnected, fail the call to unregisterTrond Myklebust2013-08-071-0/+1
|/ | | | | | | | | | | | | | | | If rpcbind causes our connection to the AF_LOCAL socket to close after we've registered a service, then we want to be careful about reconnecting since the mount namespace may have changed. By simply refusing to reconnect the AF_LOCAL socket in the case of unregister, we avoid the need to somehow save the mount namespace. While this may lead to some services not unregistering properly, it should be safe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Nix <nix@esperi.org.uk> Cc: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # 3.9.x
* Merge branch 'for-linus' of ↵Linus Torvalds2013-07-141-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs stuff from Al Viro: "O_TMPFILE ABI changes, Oleg's fput() series, misc cleanups, including making simple_lookup() usable for filesystems with non-NULL s_d_op, which allows us to get rid of quite a bit of ugliness" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: sunrpc: now we can just set ->s_d_op cgroup: we can use simple_lookup() now efivarfs: we can use simple_lookup() now make simple_lookup() usable for filesystems that set ->s_d_op configfs: don't open-code d_alloc_name() __rpc_lookup_create_exclusive: pass string instead of qstr rpc_create_*_dir: don't bother with qstr llist: llist_add() can use llist_add_batch() llist: fix/simplify llist_add() and llist_add_batch() fput: turn "list_head delayed_fput_list" into llist_head fs/file_table.c:fput(): add comment Safer ABI for O_TMPFILE
| * rpc_create_*_dir: don't bother with qstrAl Viro2013-07-141-2/+2
| | | | | | | | | | | | just pass the name Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2013-07-113-27/+35
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull nfsd changes from Bruce Fields: "Changes this time include: - 4.1 enabled on the server by default: the last 4.1-specific issues I know of are fixed, so we're not going to find the rest of the bugs without more exposure. - Experimental support for NFSv4.2 MAC Labeling (to allow running selinux over NFS), from Dave Quigley. - Fixes for some delicate cache/upcall races that could cause rare server hangs; thanks to Neil Brown and Bodo Stroesser for extreme debugging persistence. - Fixes for some bugs found at the recent NFS bakeathon, mostly v4 and v4.1-specific, but also a generic bug handling fragmented rpc calls" * 'for-3.11' of git://linux-nfs.org/~bfields/linux: (31 commits) nfsd4: support minorversion 1 by default nfsd4: allow destroy_session over destroyed session svcrpc: fix failures to handle -1 uid's sunrpc: Don't schedule an upcall on a replaced cache entry. net/sunrpc: xpt_auth_cache should be ignored when expired. sunrpc/cache: ensure items removed from cache do not have pending upcalls. sunrpc/cache: use cache_fresh_unlocked consistently and correctly. sunrpc/cache: remove races with queuing an upcall. nfsd4: return delegation immediately if lease fails nfsd4: do not throw away 4.1 lock state on last unlock nfsd4: delegation-based open reclaims should bypass permissions svcrpc: don't error out on small tcp fragment svcrpc: fix handling of too-short rpc's nfsd4: minor read_buf cleanup nfsd4: fix decoding of compounds across page boundaries nfsd4: clean up nfs4_open_delegation NFSD: Don't give out read delegations on creates nfsd4: allow client to send no cb_sec flavors nfsd4: fail attempts to request gss on the backchannel nfsd4: implement minimal SP4_MACH_CRED ...
| * | net/sunrpc: xpt_auth_cache should be ignored when expired.NeilBrown2013-07-011-27/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit d202cce8963d9268ff355a386e20243e8332b308 sunrpc: never return expired entries in sunrpc_cache_lookup moved the 'entry is expired' test from cache_check to sunrpc_cache_lookup, so that it happened early and some races could safely be ignored. However the ip_map (in svcauth_unix.c) has a separate single-item cache which allows quick lookup without locking. An entry in this case would not be subject to the expiry test and so could be used well after it has expired. This is not normally a big problem because the first time it is used after it is expired an up-call will be scheduled to refresh the entry (if it hasn't been scheduled already) and the old entry will then be invalidated. So on the second attempt to use it after it has expired, ip_map_cached_get will discard it. However that is subtle and not ideal, so replace the "!cache_valid" test with "cache_is_expired". In doing this we drop the test on the "CACHE_VALID" bit. This is unnecessary as the bit is never cleared, and an entry will only be cached if the bit is set. Reported-by: Bodo Stroesser <bstroesser@ts.fujitsu.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| * | sunrpc/cache: ensure items removed from cache do not have pending upcalls.NeilBrown2013-07-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is possible for a race to set CACHE_PENDING after cache_clean() has removed a cache entry from the cache. If CACHE_PENDING is still set when the entry is finally 'put', the cache_dequeue() will never happen and we can leak memory. So set a new flag 'CACHE_CLEANED' when we remove something from the cache, and don't queue any upcall if it is set. If CACHE_PENDING is set before CACHE_CLEANED, the call that cache_clean() makes to cache_fresh_unlocked() will free memory as needed. If CACHE_PENDING is set after CACHE_CLEANED, the test in sunrpc_cache_pipe_upcall will ensure that the memory is not allocated. Reported-by: <bstroesser@ts.fujitsu.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| * | svcrpc: store gss mech in svc_credJ. Bruce Fields2013-07-012-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Store a pointer to the gss mechanism used in the rq_cred and cl_cred. This will make it easier to enforce SP4_MACH_CRED, which needs to compare the mechanism used on the exchange_id with that used on protected operations. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| * | svcrpc: introduce init_svc_credJ. Bruce Fields2013-07-011-0/+7
| |/ | | | | | | | | | | Common helper to zero out fields of the svc_cred. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | SUNRPC: Remove unused functions rpc_task_set/has_priorityTrond Myklebust2013-06-061-10/+0
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: Remove the unused helpers task_for_each() and task_for_first()Trond Myklebust2013-06-061-9/+0
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: Remove unused function rpc_queue_emptyTrond Myklebust2013-06-061-1/+0
|/ | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'nfs-for-next' of git://linux-nfs.org/~trondmy/nfs-2.6 into ↵J. Bruce Fields2013-04-292-7/+32
|\ | | | | | | | | | | | | | | | | for-3.10 Note conflict: Chuck's patches modified (and made static) gss_mech_get_by_OID, which is still needed by gss-proxy patches. The conflict resolution is a bit minimal; we may want some more cleanup.
| * Merge branch 'rpcsec_gss-from_cel' into linux-nextTrond Myklebust2013-04-232-9/+30
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * rpcsec_gss-from_cel: (21 commits) NFS: Retry SETCLIENTID with AUTH_SYS instead of AUTH_NONE NFSv4: Don't clear the machine cred when client establish returns EACCES NFSv4: Fix issues in nfs4_discover_server_trunking NFSv4: Fix the fallback to AUTH_NULL if krb5i is not available NFS: Use server-recommended security flavor by default (NFSv3) SUNRPC: Don't recognize RPC_AUTH_MAXFLAVOR NFS: Use "krb5i" to establish NFSv4 state whenever possible NFS: Try AUTH_UNIX when PUTROOTFH gets NFS4ERR_WRONGSEC NFS: Use static list of security flavors during root FH lookup recovery NFS: Avoid PUTROOTFH when managing leases NFS: Clean up nfs4_proc_get_rootfh NFS: Handle missing rpc.gssd when looking up root FH SUNRPC: Remove EXPORT_SYMBOL_GPL() from GSS mech switch SUNRPC: Make gss_mech_get() static SUNRPC: Refactor nfsd4_do_encode_secinfo() SUNRPC: Consider qop when looking up pseudoflavors SUNRPC: Load GSS kernel module by OID SUNRPC: Introduce rpcauth_get_pseudoflavor() SUNRPC: Define rpcsec_gss_info structure NFS: Remove unneeded forward declaration ...
| | * SUNRPC: Make gss_mech_get() staticChuck Lever2013-03-291-3/+0
| | | | | | | | | | | | | | | | | | | | | gss_mech_get() is no longer used outside of gss_mech_switch.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * SUNRPC: Refactor nfsd4_do_encode_secinfo()Chuck Lever2013-03-292-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up. This matches a similar API for the client side, and keeps ULP fingers out the of the GSS mech switch. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * SUNRPC: Consider qop when looking up pseudoflavorsChuck Lever2013-03-291-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFSv4 SECINFO operation returns a list of security flavors that the server supports for a particular share. An NFSv4 client is supposed to pick a pseudoflavor it supports that corresponds to one of the flavors returned by the server. GSS flavors in this list have a GSS tuple that identify a specific GSS pseudoflavor. Currently our client ignores the GSS tuple's "qop" value. A matching pseudoflavor is chosen based only on the OID and service value. So far this omission has not had much effect on Linux. The NFSv4 protocol currently supports only one qop value: GSS_C_QOP_DEFAULT, also known as zero. However, if an NFSv4 server happens to return something other than zero in the qop field, our client won't notice. This could cause the client to behave in incorrect ways that could have security implications. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * SUNRPC: Introduce rpcauth_get_pseudoflavor()Chuck Lever2013-03-292-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A SECINFO reply may contain flavors whose kernel module is not yet loaded by the client's kernel. A new RPC client API, called rpcauth_get_pseudoflavor(), is introduced to do proper checking for support of a security flavor. When this API is invoked, the RPC client now tries to load the module for each flavor first before performing the "is this supported?" check. This means if a module is available on the client, but has not been loaded yet, it will be loaded and registered automatically when the SECINFO reply is processed. The new API can take a full GSS tuple (OID, QoP, and service). Previously only the OID and service were considered. nfs_find_best_sec() is updated to verify all flavors requested in a SECINFO reply, including AUTH_NULL and AUTH_UNIX. Previously these two flavors were simply assumed to be supported without consulting the RPC client. Note that the replaced version of nfs_find_best_sec() can return RPC_AUTH_MAXFLAVOR if the server returns a recognized OID but an unsupported "service" value. nfs_find_best_sec() now returns RPC_AUTH_UNIX in this case. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * SUNRPC: Define rpcsec_gss_info structureChuck Lever2013-03-291-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFSv4 SECINFO procedure returns a list of security flavors. Any GSS flavor also has a GSS tuple containing an OID, a quality-of- protection value, and a service value, which specifies a particular GSS pseudoflavor. For simplicity and efficiency, I'd like to return each GSS tuple from the NFSv4 SECINFO XDR decoder and pass it straight into the RPC client. Define a data structure that is visible to both the NFS client and the RPC client. Take structure and field names from the relevant standards to avoid confusion. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | SUNRPC: conditionally return endtime from import_sec_contextSimo Sorce2013-04-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | We expose this parameter for a future caller. It will be used to extract the endtime from the gss-proxy upcall mechanism, in order to set the rsc cache expiration time. Signed-off-by: Simo Sorce <simo@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | | SUNRPC: allow disabling idle timeoutJ. Bruce Fields2013-04-262-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the gss-proxy case we don't want to have to reconnect at random--we want to connect only on gss-proxy startup when we can steal gss-proxy's context to do the connect in the right namespace. So, provide a flag that allows the rpc_create caller to turn off the idle timeout. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* | | Merge Trond's nfs-for-nextJ. Bruce Fields2013-04-262-0/+6
|\| | | | | | | | | | | | | | | | | | | | Merging Trond's nfs-for-next branch, mainly to get b7993cebb841b0da7a33e9d5ce301a9fd3209165 "SUNRPC: Allow rpc_create() to request that TCP slots be unlimited", which a small piece of the gss-proxy work depends on.
| * | SUNRPC: Allow rpc_create() to request that TCP slots be unlimitedTrond Myklebust2013-04-142-0/+4
| | | | | | | | | | | | | | | | | | | | | This is mainly for use by NFSv4.1, where the session negotiation ultimately wants to decide how many RPC slots we can fill. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix a livelock problem in the xprt->backlog queueTrond Myklebust2013-04-141-0/+2
| |/ | | | | | | | | | | | | | | | | | | This patch ensures that we throttle new RPC requests if there are requests already waiting in the xprt->backlog queue. The reason for doing this is to fix livelock issues that can occur when an existing (high priority) task is waiting in the backlog queue, gets woken up by xprt_free_slot(), but a new task then steals the slot. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* / nfsd4: check backchannel attributes on create_sessionJ. Bruce Fields2013-04-091-0/+3
|/ | | | | | Make sure the client gives us an adequate backchannel. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* Merge tag 'nfs-for-3.9-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2013-03-021-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client bugfixes from Trond Myklebust: "We've just concluded another Connectathon interoperability testing week, and so here are the fixes for the bugs that were discovered: - Don't allow NFS silly-renamed files to be deleted - Don't start the retransmission timer when out of socket space - Fix a couple of pnfs-related Oopses. - Fix one more NFSv4 state recovery deadlock - Don't loop forever when LAYOUTGET returns NFS4ERR_LAYOUTTRYLATER" * tag 'nfs-for-3.9-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: One line comment fix NFSv4.1: LAYOUTGET EDELAY loops timeout to the MDS SUNRPC: add call to get configured timeout PNFS: set the default DS timeout to 60 seconds NFSv4: Fix another open/open_recovery deadlock nfs: don't allow nfs_find_actor to match inodes of the wrong type NFSv4.1: Hold reference to layout hdr in layoutget pnfs: fix resend_to_mds for directio SUNRPC: Don't start the retransmission timer when out of socket space NFS: Don't allow NFS silly-renamed files to be deleted, no signal
| * SUNRPC: add call to get configured timeoutWeston Andros Adamson2013-02-281-0/+1
| | | | | | | | | | | | | | Returns the configured timeout for the xprt of the rpc client. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | Merge branch 'for-3.9' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2013-02-285-158/+178
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull nfsd changes from J Bruce Fields: "Miscellaneous bugfixes, plus: - An overhaul of the DRC cache by Jeff Layton. The main effect is just to make it larger. This decreases the chances of intermittent errors especially in the UDP case. But we'll need to watch for any reports of performance regressions. - Containerized nfsd: with some limitations, we now support per-container nfs-service, thanks to extensive work from Stanislav Kinsbursky over the last year." Some notes about conflicts, since there were *two* non-data semantic conflicts here: - idr_remove_all() had been added by a memory leak fix, but has since become deprecated since idr_destroy() does it for us now. - xs_local_connect() had been added by this branch to make AF_LOCAL connections be synchronous, but in the meantime Trond had changed the calling convention in order to avoid a RCU dereference. There were a couple of more obvious actual source-level conflicts due to the hlist traversal changes and one just due to code changes next to each other, but those were trivial. * 'for-3.9' of git://linux-nfs.org/~bfields/linux: (49 commits) SUNRPC: make AF_LOCAL connect synchronous nfsd: fix compiler warning about ambiguous types in nfsd_cache_csum svcrpc: fix rpc server shutdown races svcrpc: make svc_age_temp_xprts enqueue under sv_lock lockd: nlmclnt_reclaim(): avoid stack overflow nfsd: enable NFSv4 state in containers nfsd: disable usermode helper client tracker in container nfsd: use proper net while reading "exports" file nfsd: containerize NFSd filesystem nfsd: fix comments on nfsd_cache_lookup SUNRPC: move cache_detail->cache_request callback call to cache_read() SUNRPC: remove "cache_request" argument in sunrpc_cache_pipe_upcall() function SUNRPC: rework cache upcall logic SUNRPC: introduce cache_detail->cache_request callback NFS: simplify and clean cache library NFS: use SUNRPC cache creation and destruction helper for DNS cache nfsd4: free_stid can be static nfsd: keep a checksum of the first 256 bytes of request sunrpc: trim off trailing checksum before returning decrypted or integrity authenticated buffer sunrpc: fix comment in struct xdr_buf definition ...
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