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* MFC r303763,303791,303869: zfs: honour and make use of vfs vnode locking ↵avg2016-08-111-30/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | protocol ZFS POSIX Layer is originally written for Solaris VFS which is very different from FreeBSD VFS. Most importantly many things that FreeBSD VFS manages on behalf of all filesystems are implemented in ZPL in a different way. Thus, ZPL contains code that is redundant on FreeBSD or duplicates VFS functionality or, in the worst cases, badly interacts / interferes with VFS. The most prominent problem is a deadlock caused by the lock order reversal of vnode locks that may happen with concurrent zfs_rename() and lookup(). The deadlock is a result of zfs_rename() not observing the vnode locking contract expected by VFS. This commit removes all ZPL internal locking that protects parent-child relationships of filesystem nodes. These relationships are protected by vnode locks and the code is changed to take advantage of that fact and to properly interact with VFS. Removal of the internal locking allowed all ZPL dmu_tx_assign calls to use TXG_WAIT mode. Another victim, disputable perhaps, is ZFS support for filesystems with mixed case sensitivity. That support is not provided by the OS anyway, so in ZFS it was a buch of dead code. To do: - replace ZFS_ENTER mechanism with VFS managed / visible mechanism - replace zfs_zget with zfs_vget[f] as much as possible - get rid of not really useful now zfs_freebsd_* adapters - more cleanups of unneeded / unused code - fix / replace .zfs support PR: 209158 Approved by: re (gjb)
* Revert r299454 and r299448.mav2016-06-301-150/+84
| | | | | | | | | | | Those changes were found confusing FreeBSD libc ACL code, that doesn't differentiate ACL for directories and files, and report ACLs for all directories created after those patches as non-trivial. On the other side these changes were considered wrong from POSIX and NFSv4 points of view. Until further investigation done upstream, revert those changes locally in preparation for FreeBSD 11.0 release. Approved by: re (hrs)
* MFV r299453: 6765 zfs_zaccess_delete() comments do not accurately reflectmav2016-05-111-22/+21
| | | | | | | | | | delete permissions for ACLs Reviewed by: Gordon Ross <gwr@nexenta.com> Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com> Author: Kevin Crowe <kevin.crowe@nexenta.com> openzfs/openzfs@a40149b935cbbe87bf95e2cc44b3bc99d400513a
* MFV r299451: 6764 zfs issues with inheritance flags during chmod(2) withmav2016-05-111-84/+78
| | | | | | | | | | aclmode=passthrough Reviewed by: Gordon Ross <gwr@nexenta.com> Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com> Author: Albert Lee <trisk@nexenta.com> openzfs/openzfs@1bcf0d240bdebed61b4261f7c0ee323e07c8dfac
* MFV r299449: 6763 aclinherit=restricted masks inherited permissions by groupmav2016-05-111-6/+5
| | | | | | | | | | perms (groupmask) Reviewed by: Gordon Ross <gwr@nexenta.com> Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com> Author: Albert Lee <trisk@nexenta.com> openzfs/openzfs@eebb483d0cd68bdc4cf03c01fdeba9af160c17af
* MFV r299442: 6762 POSIX write should imply DELETE_CHILD on directories - andmav2016-05-111-81/+148
| | | | | | | | | | some additional considerations Reviewed by: Gordon Ross <gwr@nexenta.com> Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com> Author: Kevin Crowe <kevin.crowe@nexenta.com> openzfs/openzfs@d316fffc9c361532a482208561bbb614dac7f916
* Removed unused label and fix mutex_exit ordersmh2016-02-251-2/+1
| | | | | | | | | Remove unused done label from zfs_setacl fixing PVS-Studio V729. Fix mutex_exit order to mirror the mutex_enter order. MFC after: 1 week Sponsored by: Multiplay
* Mechanically convert cddl sun #ifdef's to illumossmh2015-01-171-1/+1
| | | | | | | | | | | | Since the upstream for cddl code is now illumos not sun, mechanically convert all sun #ifdef's to illumos #ifdef's which have been used in all newer code for some time. Also do a manual pass to correct the use if #ifdef comments as per style(9) as well as few uses of #if defined(__FreeBSD__) vs #ifndef illumos. MFC after: 1 month Sponsored by: Multiplay
* Enable kernel-specific code for FreeBSD also on other systems that usermh2013-06-301-2/+2
| | | | | | the kernel of FreeBSD. Reviewed by: pjd
* MFV r251620:delphij2013-06-111-4/+5
| | | | | | | | | ZFS comments need cleaner, more consistent style Illumos ZFS issues: 3741 zfs comments need cleaner, more consistent style MFC after: 2 weeks
* MFV r248217:mm2013-04-061-18/+19
| | | | | | | | | | Merge change from vendor to reduce diff only. ZFS dtrace probes are not supported on FreeBSD yet. Illumos ZFS issues: 3598 want to dtrace when errors are generated in zfs MFC after: 3 weeks
* Resurrect the ZFS "aclmode" propertymm2011-07-181-104/+51
| | | | | | | | | Change default of "aclmode" to "discard". Illumos-gate changeset: 13370:8c04143bd318 Obtained from: Illumos (Feature #742) MFC after: 2 weeks
* Finally... Import the latest open-source ZFS version - (SPA) 28.pjd2011-02-271-700/+590
| | | | | | | | | | | | | | | Few new things available from now on: - Data deduplication. - Triple parity RAIDZ (RAIDZ3). - zfs diff. - zpool split. - Snapshot holds. - zpool import -F. Allows to rewind corrupted pool to earlier transaction group. - Possibility to import pool in read-only mode. MFC after: 1 month
* Import changes from OpenSolaris that providemm2010-08-281-73/+264
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - better ACL caching and speedup of ACL permission checks - faster handling of stat() - lowered mutex contention in the read/writer lock (rrwlock) - several related bugfixes Detailed information (OpenSolaris onnv changesets and Bug IDs): 9749:105f407a2680 6802734 Support for Access Based Enumeration (not used on FreeBSD) 6844861 inconsistent xattr readdir behavior with too-small buffer 9866:ddc5f1d8eb4e 6848431 zfs with rstchown=0 or file_chown_self privilege allows user to "take" ownership 9981:b4907297e740 6775100 stat() performance on files on zfs should be improved 6827779 rrwlock is overly protective of its counters 10143:d2d432dfe597 6857433 memory leaks found at: zfs_acl_alloc/zfs_acl_node_alloc 6860318 truncate() on zfsroot succeeds when file has a component of its path set without access permission 10232:f37b85f7e03e 6865875 zfs sometimes incorrectly giving search access to a dir 10250:b179ceb34b62 6867395 zpool_upgrade_007_pos testcase panic'd with BAD TRAP: type=e (#pf Page fault) 10269:2788675568fd 6868276 zfs_rezget() can be hazardous when znode has a cached ACL 10295:f7a18a1e9610 6870564 panic in zfs_getsecattr Approved by: delphij (mentor) Obtained from: OpenSolaris (multiple Bug IDs) MFC after: 2 weeks
* Merge ZFS version 15 and almost all OpenSolaris bugfixes referencedmm2010-07-121-158/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in Solaris 10 updates 141445-09 and 142901-14. Detailed information: (OpenSolaris revisions and Bug IDs, Solaris 10 patch numbers) 7844:effed23820ae 6755435 zfs_open() and zfs_close() needs to use ZFS_ENTER/ZFS_VERIFY_ZP (141445-01) 7897:e520d8258820 6748436 inconsistent zpool.cache in boot_archive could panic a zfs root filesystem upon boot-up (141445-01) 7965:b795da521357 6740164 zpool attach can create an illegal root pool (141909-02) 8084:b811cc60d650 6769612 zpool_import() will continue to write to cachefile even if altroot is set (N/A) 8121:7fd09d4ebd9c 6757430 want an option for zdb to disable space map loading and leak tracking (141445-01) 8129:e4f45a0bfbb0 6542860 ASSERT: reason != VDEV_LABEL_REMOVE||vdev_inuse(vd, crtxg, reason, 0) (141445-01) 8188:fd00c0a81e80 6761100 want zdb option to select older uberblocks (141445-01) 8190:6eeea43ced42 6774886 zfs_setattr() won't allow ndmp to restore SUNWattr_rw (141445-01) 8225:59a9961c2aeb 6737463 panic while trying to write out config file if root pool import fails (141445-01) 8227:f7d7be9b1f56 6765294 Refactor replay (141445-01) 8228:51e9ca9ee3a5 6572357 libzfs should do more to avoid mnttab lookups (141909-01) 6572376 zfs_iter_filesystems and zfs_iter_snapshots get objset stats twice (141909-01) 8241:5a60f16123ba 6328632 zpool offline is a bit too conservative (141445-01) 6739487 ASSERT: txg <= spa_final_txg due to scrub/export race (141445-01) 6767129 ASSERT: cvd->vdev_isspare, in spa_vdev_detach() (141445-01) 6747698 checksum failures after offline -t / export / import / scrub (141445-01) 6745863 ZFS writes to disk after it has been offlined (141445-01) 6722540 50% slowdown on scrub/resilver with certain vdev configurations (141445-01) 6759999 resilver logic rewrites ditto blocks on both source and destination (141445-01) 6758107 I/O should never suspend during spa_load() (141445-01) 6776548 codereview(1) runs off the page when faced with multi-line comments (N/A) 6761406 AMD errata 91 workaround doesn't work on 64-bit systems (141445-01) 8242:e46e4b2f0a03 6770866 GRUB/ZFS should require physical path or devid, but not both (141445-01) 8269:03a7e9050cfd 6674216 "zfs share" doesn't work, but "zfs set sharenfs=on" does (141445-01) 6621164 $SRC/cmd/zfs/zfs_main.c seems to have a syntax error in the translation note (141445-01) 6635482 i18n problems in libzfs_dataset.c and zfs_main.c (141445-01) 6595194 "zfs get" VALUE column is as wide as NAME (141445-01) 6722991 vdev_disk.c: error checking for ddi_pathname_to_dev_t() must test for NODEV (141445-01) 6396518 ASSERT strings shouldn't be pre-processed (141445-01) 8274:846b39508aff 6713916 scrub/resilver needlessly decompress data (141445-01) 8343:655db2375fed 6739553 libzfs_status msgid table is out of sync (141445-01) 6784104 libzfs unfairly rejects numerical values greater than 2^63 (141445-01) 6784108 zfs_realloc() should not free original memory on failure (141445-01) 8525:e0e0e525d0f8 6788830 set large value to reservation cause core dump (141445-01) 6791064 want sysevents for ZFS scrub (141445-01) 6791066 need to be able to set cachefile on faulted pools (141445-01) 6791071 zpool_do_import() should not enable datasets on faulted pools (141445-01) 6792134 getting multiple properties on a faulted pool leads to confusion (141445-01) 8547:bcc7b46e5ff7 6792884 Vista clients cannot access .zfs (141445-01) 8632:36ef517870a3 6798384 It can take a village to raise a zio (141445-01) 8636:7e4ce9158df3 6551866 deadlock between zfs_write(), zfs_freesp(), and zfs_putapage() (141909-01) 6504953 zfs_getpage() misunderstands VOP_GETPAGE() interface (141909-01) 6702206 ZFS read/writer lock contention throttles sendfile() benchmark (141445-01) 6780491 Zone on a ZFS filesystem has poor fork/exec performance (141445-01) 6747596 assertion failed: DVA_EQUAL(BP_IDENTITY(&zio->io_bp_orig), BP_IDENTITY(zio->io_bp))); (141445-01) 8692:692d4668b40d 6801507 ZFS read aggregation should not mind the gap (141445-01) 8697:e62d2612c14d 6633095 creating a filesystem with many properties set is slow (141445-01) 8768:dfecfdbb27ed 6775697 oracle crashes when overwriting after hitting quota on zfs (141909-01) 8811:f8deccf701cf 6790687 libzfs mnttab caching ignores external changes (141445-01) 6791101 memory leak from libzfs_mnttab_init (141445-01) 8845:91af0d9c0790 6800942 smb_session_create() incorrectly stores IP addresses (N/A) 6582163 Access Control List (ACL) for shares (141445-01) 6804954 smb_search - shortname field should be space padded following the NULL terminator (N/A) 6800184 Panic at smb_oplock_conflict+0x35() (N/A) 8876:59d2e67b4b65 6803822 Reboot after replacement of system disk in a ZFS mirror drops to grub> prompt (141445-01) 8924:5af812f84759 6789318 coredump when issue zdb -uuuu poolname/ (141445-01) 6790345 zdb -dddd -e poolname coredump (141445-01) 6797109 zdb: 'zdb -dddddd pool_name/fs_name inode' coredump if the file with inode was deleted (141445-01) 6797118 zdb: 'zdb -dddddd poolname inum' coredump if I miss the fs name (141445-01) 6803343 shareiscsi=on failed, iscsitgtd failed request to share (141445-01) 9030:243fd360d81f 6815893 hang mounting a dataset after booting into a new boot environment (141445-01) 9056:826e1858a846 6809691 'zpool create -f' no longer overwrites ufs infomation (141445-01) 9179:d8fbd96b79b3 6790064 zfs needs to determine uid and gid earlier in create process (141445-01) 9214:8d350e5d04aa 6604992 forced unmount + being in .zfs/snapshot/<snap1> = not happy (141909-01) 6810367 assertion failed: dvp->v_flag & VROOT, file: ../../common/fs/gfs.c, line: 426 (141909-01) 9229:e3f8b41e5db4 6807765 ztest_dsl_dataset_promote_busy needs to clean up after ENOSPC (141445-01) 9230:e4561e3eb1ef 6821169 offlining a device results in checksum errors (141445-01) 6821170 ZFS should not increment error stats for unavailable devices (141445-01) 6824006 need to increase issue and interrupt taskqs threads in zfs (141445-01) 9234:bffdc4fc05c4 6792139 recovering from a suspended pool needs some work (141445-01) 6794830 reboot command hangs on a failed zfs pool (141445-01) 9246:67c03c93c071 6824062 System panicked in zfs_mount due to NULL pointer dereference when running btts and svvs tests (141909-01) 9276:a8a7fc849933 6816124 System crash running zpool destroy on broken zpool (141445-03) 9355:09928982c591 6818183 zfs snapshot -r is slow due to set_snap_props() doing txg_wait_synced() for each new snapshot (141445-03) 9391:413d0661ef33 6710376 log device can show incorrect status when other parts of pool are degraded (141445-03) 9396:f41cf682d0d3 (part already merged) 6501037 want user/group quotas on ZFS (141445-03) 6827260 assertion failed in arc_read(): hdr == pbuf->b_hdr (141445-03) 6815592 panic: No such hold X on refcount Y from zfs_znode_move (141445-03) 6759986 zfs list shows temporary %clone when doing online zfs recv (141445-03) 9404:319573cd93f8 6774713 zfs ignores canmount=noauto when sharenfs property != off (141445-03) 9412:4aefd8704ce0 6717022 ZFS DMU needs zero-copy support (141445-03) 9425:e7ffacaec3a8 6799895 spa_add_spares() needs to be protected by config lock (141445-03) 6826466 want to post sysevents on hot spare activation (141445-03) 6826468 spa 'allowfaulted' needs some work (141445-03) 6826469 kernel support for storing vdev FRU information (141445-03) 6826470 skip posting checksum errors from DTL regions of leaf vdevs (141445-03) 6826471 I/O errors after device remove probe can confuse FMA (141445-03) 6826472 spares should enjoy some of the benefits of cache devices (141445-03) 9443:2a96d8478e95 6833711 gang leaders shouldn't have to be logical (141445-03) 9463:d0bd231c7518 6764124 want zdb to be able to checksum metadata blocks only (141445-03) 9465:8372081b8019 6830237 zfs panic in zfs_groupmember() (141445-03) 9466:1fdfd1fed9c4 6833162 phantom log device in zpool status (141445-03) 9469:4f68f041ddcd 6824968 add ZFS userquota support to rquotad (141445-03) 9470:6d827468d7b5 6834217 godfather I/O should reexecute (141445-03) 9480:fcff33da767f 6596237 Stop looking and start ganging (141909-02) 9493:9933d599bc93 6623978 lwb->lwb_buf != NULL, file ../../../uts/common/fs/zfs/zil.c, line 787, function zil_lwb_commit (141445-06) 9512:64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads (N/A) 9515:d3b739d9d043 6586537 async zio taskqs can block out userland commands (142901-09) 9554:787363635b6a 6836768 zfs_userspace() callback has no way to indicate failure (N/A) 9574:1eb6a6ab2c57 6838062 zfs panics when an error is encountered in space_map_load() (141909-02) 9583:b0696cd037cc 6794136 Panic BAD TRAP: type=e when importing degraded zraid pool. (141909-03) 9630:e25a03f552e0 6776104 "zfs import" deadlock between spa_unload() and spa_async_thread() (141445-06) 9653:a70048a304d1 6664765 Unable to remove files when using fat-zap and quota exceeded on ZFS filesystem (141445-06) 9688:127be1845343 6841321 zfs userspace / zfs get userused@ doesn't work on mounted snapshot (N/A) 6843069 zfs get userused@S-1-... doesn't work (N/A) 9873:8ddc892eca6e 6847229 assertion failed: refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite in dmu_tx.c (141445-06) 9904:d260bd3fd47c 6838344 kernel heap corruption detected on zil while stress testing (141445-06) 9951:a4895b3dd543 6844900 zfs_ioc_userspace_upgrade leaks (N/A) 10040:38b25aeeaf7a 6857012 zfs panics on zpool import (141445-06) 10000:241a51d8720c 6848242 zdb -e no longer works as expected (N/A) 10100:4a6965f6bef8 6856634 snv_117 not booting: zfs_parse_bootfs: error2 (141445-07) 10160:a45b03783d44 6861983 zfs should use new name <-> SID interfaces (N/A) 6862984 userquota commands can hang (141445-06) 10299:80845694147f 6696858 zfs receive of incremental replication stream can dereference NULL pointer and crash (N/A) 10302:a9e3d1987706 6696858 zfs receive of incremental replication stream can dereference NULL pointer and crash (fix lint) (N/A) 10575:2a8816c5173b (partial merge) 6882227 spa_async_remove() shouldn't do a full clear (142901-14) 10800:469478b180d9 6880764 fsync on zfs is broken if writes are greater than 32kb on a hard crash and no log attached (142901-09) 6793430 zdb -ivvvv assertion failure: bp->blk_cksum.zc_word[2] == dmu_objset_id(zilog->zl_os) (N/A) 10801:e0bf032e8673 (partial merge) 6822816 assertion failed: zap_remove_int(ds_next_clones_obj) returns ENOENT (142901-09) 10810:b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 (142901-09) 10890:499786962772 6807339 spurious checksum errors when replacing a vdev (142901-13) 11249:6c30f7dfc97b 6906110 bad trap panic in zil_replay_log_record (142901-13) 6906946 zfs replay isn't handling uid/gid correctly (142901-13) 11454:6e69bacc1a5a 6898245 suspended zpool should not cause rest of the zfs/zpool commands to hang (142901-10) 11546:42ea6be8961b (partial merge) 6833999 3-way deadlock in dsl_dataset_hold_ref() and dsl_sync_task_group_sync() (142901-09) Discussed with: pjd Approved by: delphij (mentor) Obtained from: OpenSolaris (multiple Bug IDs) MFC after: 2 months
* Fix panic in zfs_getsecattrmm2010-06-121-4/+11
| | | | | | | | OpenSolaris onnv-revision: 10295:f7a18a1e9610 Obtained from: OpenSolaris (Bug ID 6870564) Approved by: pjd, delphij (mentor) MFC after: 3 days
* Allow to modify directory's content even if the ZFS_NOUNLINK (SF_NOUNLINK,pjd2010-04-221-0/+13
| | | | | | | | sunlnk) flag is set. We only deny dirctory's removal or rename. PR: kern/143343 Reported by: marck MFC after: 3 days
* Apply OpenSolaris revision 8012 which brings our zpool to version 14,delphij2009-12-281-90/+102
| | | | | | | | | | | making it possible for zpools created on OpenSolaris 2009.06 be used on FreeBSD. PR: kern/141800 Submitted by: mm Reviewed by: pjd, trasz Obtained from: OpenSolaris MFC after: 2 weeks
* Restore BSD behaviour - when creating new directory entry use parent directorypjd2009-09-231-1/+1
| | | | | | | | | | gid to set group ownership and not process gid. This was overlooked during v6 -> v13 switch. PR: kern/139076 Reported by: Sean Winn <sean@gothic.net.au> MFC after: 3 days
* Fix permission handling for extended attributes in ZFS. Withouttrasz2009-07-201-0/+10
| | | | | | | | | | | | | | | | | | this change, ZFS uses SunOS Alternate Data Streams semantics - each EA has its own permissions, which are set at EA creation time and - unlike SunOS - invisible to the user and impossible to change. From the user point of view, it's just broken: sometimes access is granted when it shouldn't be, sometimes it's denied when it shouldn't be. This patch makes it behave just like UFS, i.e. depend on current file permissions. Also, it fixes returned error codes (ENOATTR instead of ENOENT) and makes listextattr(2) return 0 instead of EPERM where there is no EA directory (i.e. the file never had any EA). Reviewed by: pjd (idea, not actual code) Approved by: re (kib)
* MFp4 changes neccessary for NFSv4 ACLs support in ZFS. This is mostlytrasz2009-05-261-4/+0
| | | | | | | | | | | about removing a few #ifdefs and providing compatibility wrappers and VOP implementations to get and set an ACL; ZFS does ACL enforcement all by itself. Note that the VOPs are ifdefed out for now, so this change should be a no-op. Reviewed by: pjd
* Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.pjd2008-11-171-717/+1782
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This bring huge amount of changes, I'll enumerate only user-visible changes: - Delegated Administration Allows regular users to perform ZFS operations, like file system creation, snapshot creation, etc. - L2ARC Level 2 cache for ZFS - allows to use additional disks for cache. Huge performance improvements mostly for random read of mostly static content. - slog Allow to use additional disks for ZFS Intent Log to speed up operations like fsync(2). - vfs.zfs.super_owner Allows regular users to perform privileged operations on files stored on ZFS file systems owned by him. Very careful with this one. - chflags(2) Not all the flags are supported. This still needs work. - ZFSBoot Support to boot off of ZFS pool. Not finished, AFAIK. Submitted by: dfr - Snapshot properties - New failure modes Before if write requested failed, system paniced. Now one can select from one of three failure modes: - panic - panic on write error - wait - wait for disk to reappear - continue - serve read requests if possible, block write requests - Refquota, refreservation properties Just quota and reservation properties, but don't count space consumed by children file systems, clones and snapshots. - Sparse volumes ZVOLs that don't reserve space in the pool. - External attributes Compatible with extattr(2). - NFSv4-ACLs Not sure about the status, might not be complete yet. Submitted by: trasz - Creation-time properties - Regression tests for zpool(8) command. Obtained from: OpenSolaris
* Require write access on a directory being moved from one parenttrasz2008-11-081-0/+8
| | | | | | directory to another in ZFS. Approved by: rwatson (mentor), pjd
* Backoff the last patch. It was overly restrictive - we want to checktrasz2008-11-061-7/+0
| | | | | | | for write permission on target only when moving the target between two directories. Approved by: rwatson (mentor)
* Change ZFS behaviour to match UFS: when moving (rename(2)) a subdirectorytrasz2008-11-061-0/+7
| | | | | | | from one parent directory to another, in addition to the usual access checks one also needs write access to the subdirectory being moved. Approved by: rwatson (mentor), pjd
* MFp4: Reduce diff against vendor.pjd2007-04-241-0/+1
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* Please welcome ZFS - The last word in file systems.pjd2007-04-061-0/+1607
ZFS file system was ported from OpenSolaris operating system. The code in under CDDL license. I'd like to thank all SUN developers that created this great piece of software. Supported by: Wheel LTD (http://www.wheel.pl/) Supported by: The FreeBSD Foundation (http://www.freebsdfoundation.org/) Supported by: Sentex (http://www.sentex.net/)
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