nfssrv: don't hold exported_lock during compound processing

Instead rely on exi_hold/exi_rele the same way nfs3 does.

refs #3075

(cherry picked from commit 53d2e830bb37407aaa57ae3402a3122492f5eaa6)

4943 NFS server: Generic uid and gid remapping for AUTH_SYS
Reviewed by: Jan Kryl <jan.kryl@nexenta.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Garrett D'Amore <garrett@damore.org>

4642 Checks for ROFS are not sufficient in NFS server
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>

Back out hg changeset 829c00a55a37, bug 2986 -- introduces vulnerability
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Approved by

Back out hg changeset 829c00a55a37, bug 2986 -- introduces vulnerability
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Approved by: Dan McDonald <danmcd@nexenta.com>

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2986 nfs: exi refcounter leak at rfs3_lookup
Reviewed by: Albert Lee <trisk@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Albert Lee <trisk@nexenta.com>

merge with onnv_147
Reviewed by: garrett@nexenta.com
Approved by: garrett@nexenta.com

6972525 NFS RDMA doesn't always handle iovec structures correctly

6232737 Client should support NFS4ERR_MOVED and fs_locations
6232743 Server should support NFS4ERR_MOVED and fs_locations
6891289 client panick mutex_vector_tryenter with some stress testing

6760947 NFS/RDMA port should be changed to IANA assigned 20049
6762173 rdma panic on writes from linux client
6790590 readdir fails from Linux client against Solaris server
6790588 linux client fails

6760947 NFS/RDMA port should be changed to IANA assigned 20049
6762173 rdma panic on writes from linux client
6790590 readdir fails from Linux client against Solaris server
6790588 linux client fails to decode READ replies from Solaris server
6790586 Solaris server should better handle chunked RPC/RDMA messages
6826476 rpcib leaks memory registrations while handling multiple chunks

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6746290 panic[cpu0]/thread=ffffff01d1ebdc60: bcmp: arguments below kernelbase

6751647 TRANS2_FIND_NEXT continuation by filename restarts search at beginning of directory
6753904 SVCCTL server side service
6741484 Local users cannot connect to CIFS shares from MacOS 10.5
674689

6751647 TRANS2_FIND_NEXT continuation by filename restarts search at beginning of directory
6753904 SVCCTL server side service
6741484 Local users cannot connect to CIFS shares from MacOS 10.5
6746898 win98 can not overwrite *.files
6753310 Incorrect handling of SmbNegotiate request when invalid dialects are negotiated.
6751123 Unable to join domain, core dump generated with IPMP setting
6722437 SMB_TRANS2_FIND returns wrong status code when stream file is passed
6716578 can not delete file in extended attribute name space in cifs client when cifs server is solaris
PSARC 2008/584 Correction in nbmand behavior
6734067 Long delay when viewing MS Word Read-only file properties with nbmand enabled.
PSARC/2007/281 NFS share properties for Montana compatibility
6475452 Need Solaris support for Montana approve file functionality in NFS
6582170 Host-based access control (approve file)
6749075 Unable to join domain if user password exceeds 20 characters
6612716 Join domain fails if hostname is > 15 chars
6753251 server signing: wrong signature is generated for the NetShareEnum reply
6757521 SMB daemon leaks memory after displaying GSS status
6760315 Local user cannot connnect to CIFS shares if CIFS server's hostname is not specified
6757333 Share publisher thread runs into infinite loop of displaying GSS major/minor status
6757132 smbd crashes at smb_idmap_batch_getmappings
6760876 security descriptor decoding function has a glitch
6761491 Cannot open or delete a named stream on a directory file.
6741449 Cleanup list in smbns_ads module
6593958 Users with restore privilege can take ownership of files

--HG--
rename : usr/src/lib/smbsrv/libmlsvc/common/secdb.c => usr/src/lib/smbsrv/libmlsvc/common/smb_logon.c
rename : usr/src/lib/smbsrv/libmlsvc/common/mlsvc_svcctl.c => usr/src/lib/smbsrv/libmlsvc/common/svcctl_svc.c

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PSARC 2007/347 NFS/RDMA - Transport Version Update
6661313 mountd does not deal well with malformed authentication requests from NFS server kernel
6551906 Update the kernel RPC/RDMA transport protoco

PSARC 2007/347 NFS/RDMA - Transport Version Update
6661313 mountd does not deal well with malformed authentication requests from NFS server kernel
6551906 Update the kernel RPC/RDMA transport protocol to latest definitions
Portions contributed by Ranjit Noronha <noronha@cse.ohio-state.edu> Lei Chai <chail@cse.ohio-state.edu> Weikuan Yu <yuw@cse.ohio-state.edu>

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PSARC 2008/388 Short circuit for vdev probe failure
6410382 ZFS rename should update ->v_path
6633592 vdev_root_open() faulted logic doesn't work
6674674 zfs needs to handle more than EIO
6705158 fai

PSARC 2008/388 Short circuit for vdev probe failure
6410382 ZFS rename should update ->v_path
6633592 vdev_root_open() faulted logic doesn't work
6674674 zfs needs to handle more than EIO
6705158 failed log device should not be treated like normal toplevel vdev
6705232 vdev_not_present erroneously cleared in vdev_validate()
6705649 libses/libscsi plugins should be included in ABI exception list
6707536 zfs_case_timeout and associated code is unused
6707637 vdev_propagate_state() shouldn't skip log devices
6708095 better FMA integration for vdev probe failure
6708192 typo in fix for 6646106 breaks pool I/O failure handling
6709112 zio_should_retry() should account for vdev_is_failing
6718542 zinject doesn't work for file I/O probe failure
6719105 ses2: incorrect parsing of page 15 (nickname)

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6614416 panic in spec_fsync() when creating a device file via NFS

PSARC 2007/632 Caller context flags
6627507 Remove cross calls from v2 and v3 server

PSARC/2007/218 caller_context_t in all VOPs
PSARC/2007/227 VFS Feature Registration and ACL on Create
PSARC/2007/244 ZFS Case-insensitive support
PSARC/2007/315 Extensible Attribute Interfaces
PSARC/

PSARC/2007/218 caller_context_t in all VOPs
PSARC/2007/227 VFS Feature Registration and ACL on Create
PSARC/2007/244 ZFS Case-insensitive support
PSARC/2007/315 Extensible Attribute Interfaces
PSARC/2007/394 ls(1) new command line options '-/' and '-%': CIFS system attributes support
PSARC/2007/403 Modified Access Checks for CIFS
PSARC/2007/410 Add system attribute support to chmod(1)
PSARC/2007/432 CIFS system attributes support for cp(1), pack(1), unpack(1), compress(1) and uncompress(1)
PSARC/2007/444 Rescind SETTABLE Attribute
PSARC/2007/459 CIFS system attributes support for cpio(1), pax(1), tar(1)
PSARC/2007/546 Update utilities to match CIFS system attributes changes.
PSARC/2007/560 ZFS sharesmb property
4890717 want append-only files
6417428 Case-insensitive file system name lookup to support CIFS
6417435 DOS attributes and additional timestamps to support for CIFS
6417442 File system quarantined and modified attributes to support an integrated Anti-Virus service
6417453 FS boolean property for rejecting/allowing invalid UTF-8 sequences in file names
6473733 RFE: Need support for open-deny modes
6473755 RFE: Need ability to reconcile oplock and delegation conflicts
6494624 sharemgr needs to support CIFS shares better
6546705 All vnode operations need to pass caller_context_t
6546706 Need VOP_SETATTR/VOP_GETATTR to support new, optional attributes
6546893 Solaris system attribute support
6550962 ZFS ACL inheritance needs to be enhanced to support Automatic Inheritance
6553589 RFE: VFS Feature Registration facility
6553770 RFE: ZFS support for ACL-on-CREATE (PSARC 2007/227)
6565581 ls(1) should support file system attributes proposed in PSARC/2007/315
6566784 NTFS streams are not copied along with the files.
6576205 cp(1), pack(1) and compress(1) should support file system attributes proposed in PSARC/2007/315
6578875 RFE: kernel interfaces for nbmand need improvement
6578883 RFE: VOP_SHRLOCK needs additional access types
6578885 chmod(1) should support file system attributes proposed in PSARC/2007/315
6578886 RFE: disallow nbmand state to change on remount
6583349 ACL parser needs to support audit/alarm ACE types
6590347 tar(1) should support filesystem attributes proposed in PSARC/2007/315
6597357 *tar* xv@ doesn't show the hidden directory even though it is restored
6597360 *tar* should re-init xattr info if openat() fails during extraction of and extended attribute
6597368 *tar* cannot restore hard linked extended attributes
6597374 *tar* doesn't display "x " when hard linked attributes are restored
6597375 *tar* extended attribute header off by one
6614861 *cpio* incorrectly archives extended system attributes with -@
6614896 *pax* incorrectly archives extended system attributes with -@
6615225 *tar* incorrectly archives extended system attributes with -@
6617183 CIFS Service - PSARC 2006/715

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PSARC 2007/456 Vnode Specific Data
6588504 VSD: Stop polluting the vnode.
6591603 Use VSD to store and retrieve the "file" struct
6591606 rfs_create() passes the wrong vnode to rfs4_check_delegated

6560317 TX NFS server needs to support NFSv3 clients
6596123 TX NFSv4 should not allow a read-up mount via WebNFS

6344186 NFSv3 needs to support .zfs (like NFSv4 already does)

6331154 v_path contains old name after file is renamed

6175313 io provider exposes our reluctance to set vnode paths

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