Commit Graph

85 Commits

Author SHA1 Message Date
Xin LI
63243c5c71 On FreeBSD, time_t is 64-bit for all platforms except i386 and powerpc,
where the type is 32-bit.  ZFS can handle 64-bit timestamp internally
but zfs_setattr() would check if the time value can fit, we change the
checking macros to match 64-bit timestamp if the platform supports it.

This change has some downsides like, while you can import zfs on 32-bit
platforms, the timestamp would overflow if they are out of the range.

This fixes the Y2.038K issue on platforms using 64-bit timestamps.

Reviewed by:	pjd
MFC after:	1 month
2010-01-25 07:52:54 +00:00
Pawel Jakub Dawidek
fd66267ffb - zfs_zaccess() can handle VAPPEND too, so map V_APPEND to VAPPEND and call
zfs_access() instead of vaccess() in this case as well.
- If VADMIN is specified with another V* flag (unlikely) call both
  zfs_access() and vaccess() after spliting V* flags.

This fixes "dirtying snapshot!" panic.

PR:		kern/139806
Reported by:	Carl Chave <carl@chave.us>
In co-operation with:	jh
MFC after:	3 days
2009-10-30 23:33:06 +00:00
Pawel Jakub Dawidek
c217b20ef6 Allow file system owner to modify system flags if securelevel permits.
MFC after:	3 days
2009-10-08 16:05:17 +00:00
Pawel Jakub Dawidek
68c53ef849 File system owner is when uid matches and jail matches.
MFC after:	3 days
2009-10-08 16:03:19 +00:00
Pawel Jakub Dawidek
63e1d3df27 - Mount ZFS snapshots with MNT_IGNORE flag, so they are not visible in regular
df(1) and mount(8) output. This is a bit smilar to OpenSolaris and follows
  ZFS route of not listing snapshots by default with 'zfs list' command.
- Add UPDATING entry to note that ZFS snapshots are no longer visible in
  mount(8) and df(1) output by default.

Reviewed by:	kib
MFC after:	3 days
2009-09-14 21:10:40 +00:00
Konstantin Belousov
211ddddce7 Lock Giant around vn_open_cred().
Remove innocent unnecessary call to NDFREE().

Reported by:	marcel
Reviewed and tested by:	pjd
MFC after:	3 days
2009-09-08 09:17:34 +00:00
Pawel Jakub Dawidek
08780916dd Defer thread start until we set priority.
Reviewed by:	kib
MFC after:	3 days
2009-09-07 19:22:44 +00:00
Pawel Jakub Dawidek
2ff6f0f89a - Avoid holding mutex around M_WAITOK allocations.
- Add locking for mnt_opt field.

MFC after:	1 week
2009-09-07 18:23:26 +00:00
Pawel Jakub Dawidek
5d5535163a - Hide ZFS kernel threads under zfskern process.
- Use better (shorter) threads names:
	'zvol:worker zvol/tank/vol00' -> 'zvol tank/vol00'
	'vdev:worker da0' -> 'vdev da0'
2009-08-23 11:33:46 +00:00
Pawel Jakub Dawidek
1869987e42 - Give minclsyspri and maxclsyspri real values (consulted with kmacy).
- Honour 'pri' argument for thread_create().
2009-08-23 11:22:46 +00:00
Pawel Jakub Dawidek
35ae9291c2 Our libc doesn't implement control method for XDR (only kernel does) and it
will always return failure. Fix this by bringing userland implementation of
xdrmem_control() back. This allow 'zpool import' to work again.

Reported by:	Thomas Backman <serenity@exscape.org>
Reviewed by:	kmacy
Approved by:	re (kib)
2009-08-20 00:05:29 +00:00
Pawel Jakub Dawidek
8461b0f043 Manage asynchronous vnode release just like Solaris.
Discussed with:	kmacy
Approved by:	re (kib)
2009-08-17 09:48:34 +00:00
Pawel Jakub Dawidek
159ef108e1 Remove OpenSolaris taskq port (it performs very poorly in our kernel) and
replace it with wrappers around our taskqueue(9).
To make it possible implement taskqueue_member() function which returns 1
if the given thread was created by the given taskqueue.

Approved by:	re (kib)
2009-08-17 09:01:20 +00:00
Pawel Jakub Dawidek
830940567b Remove files that are no longer used.
Discussed with:	kmacy
Approved by:	re (kib)
2009-08-17 08:03:02 +00:00
Edward Tomasz Napierala
abd370a36b Remove CDDL warning.
Approved by:	re (kib), core
2009-08-13 12:28:30 +00:00
Konstantin Belousov
f33a947b56 Add new msleep(9) flag PBDY that shall be specified together with
PCATCH, to indicate that thread shall not be stopped upon receipt of
SIGSTOP until it reaches the kernel->usermode boundary.

Also change thread_single(SINGLE_NO_EXIT) to only stop threads at
the user boundary unconditionally.

Tested by:	pho
Reviewed by:	jhb
Approved by:	re (kensmith)
2009-07-14 22:52:46 +00:00
Konstantin Belousov
a18a95db4a O_NOFOLLOW shall be in flags, not in cmode.
Noted by:	bde
2009-06-22 10:08:48 +00:00
Konstantin Belousov
e0c161b89c Add another flags argument to vn_open_cred. Use it to specify that some
vn_open_cred invocations shall not audit namei path.

In particular, specify VN_OPEN_NOAUDIT for dotdot lookup performed by
default implementation of vop_vptocnp, and for the open done for core
file. vn_fullpath is called from the audit code, and vn_open there need
to disable audit to avoid infinite recursion. Core file is created on
return to user mode, that, in particular, happens during syscall return.
The creation of the core file is audited by direct calls, and we do not
want to overwrite audit information for syscall.

Reported, reviewed and tested by: rwatson
2009-06-21 13:41:32 +00:00
Jamie Gritton
c1f192193d Rename the host-related prison fields to be the same as the host.*
parameters they represent, and the variables they replaced, instead of
abbreviated versions of them.

Approved by:	bz (mentor)
2009-06-13 15:39:12 +00:00
Jamie Gritton
76ca6f88da Place hostnames and similar information fully under the prison system.
The system hostname is now stored in prison0, and the global variable
"hostname" has been removed, as has the hostname_mtx mutex.  Jails may
have their own host information, or they may inherit it from the
parent/system.  The proper way to read the hostname is via
getcredhostname(), which will copy either the hostname associated with
the passed cred, or the system hostname if you pass NULL.  The system
hostname can still be accessed directly (and without locking) at
prison0.pr_host, but that should be avoided where possible.

The "similar information" referred to is domainname, hostid, and
hostuuid, which have also become prison parameters and had their
associated global variables removed.

Approved by:	bz (mentor)
2009-05-29 21:27:12 +00:00
Attilio Rao
1ae1c2a3bd Reverse the logic for ADAPTIVE_SX option and enable it by default.
Introduce for this operation the reverse NO_ADAPTIVE_SX option.
The flag SX_ADAPTIVESPIN to be passed to sx_init_flags(9) gets suppressed
and the new flag, offering the reversed logic, SX_NOADAPTIVE is added.

Additively implements adaptive spininning for sx held in shared mode.
The spinning limit can be handled through sysctls in order to be tuned
while the code doesn't reach the release, after which time they should
be dropped probabilly.

This change has made been necessary by recent benchmarks where it does
improve concurrency of workloads in presence of high contention
(ie. ZFS).

KPI breakage is documented by __FreeBSD_version bumping, manpage and
UPDATING updates.

Requested by:	jeff, kmacy
Reviewed by:	jeff
Tested by:	pho
2009-05-29 01:49:27 +00:00
Edward Tomasz Napierala
b7014134a7 Change license to more bori^Wadul^Wcanonical.
Submitted by:	rwatson@
2009-05-26 11:42:06 +00:00
Edward Tomasz Napierala
0970b4bae0 MFp4 changes neccessary for NFSv4 ACLs support in ZFS. This is mostly
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
2009-05-26 08:21:59 +00:00
Edward Tomasz Napierala
4076aa37dc Don't allow non-owner to set SUID bit on a file. It doesn't make
any difference now, but in NFSv4 ACLs, there is write_acl permission,
which also affects mode changes.

Reviewed by:	pjd
2009-05-24 19:21:49 +00:00
Kip Macy
2e9c90d55b enable adaptive spinning on zfs locks 2009-05-16 23:56:45 +00:00
Attilio Rao
dfd233edd5 Remove the thread argument from the FSD (File-System Dependent) parts of
the VFS.  Now all the VFS_* functions and relating parts don't want the
context as long as it always refers to curthread.

In some points, in particular when dealing with VOPs and functions living
in the same namespace (eg. vflush) which still need to be converted,
pass curthread explicitly in order to retain the old behaviour.
Such loose ends will be fixed ASAP.

While here fix a bug: now, UFS_EXTATTR can be compiled alone without the
UFS_EXTATTR_AUTOSTART option.

VFS KPI is heavilly changed by this commit so thirdy parts modules needs
to be recompiled.  Bump __FreeBSD_version in order to signal such
situation.
2009-05-11 15:33:26 +00:00
Marko Zec
29b02909eb Introduce a new virtualization container, provisionally named vprocg, to hold
virtualized instances of hostname and domainname, as well as a new top-level
virtualization struct vimage, which holds pointers to struct vnet and struct
vprocg.  Struct vprocg is likely to become replaced in the near future with
a new jail management API import.

As a consequence of this change, change struct ucred to point to a struct
vimage, instead of directly pointing to a vnet.

Merge vnet / vimage / ucred refcounting infrastructure from p4 / vimage
branch.

Permit kldload / kldunload operations to be executed only from the default
vimage context.

This change should have no functional impact on nooptions VIMAGE kernel
builds.

Reviewed by:	bz
Approved by:	julian (mentor)
2009-05-08 14:11:06 +00:00
Kip Macy
c20fd07777 move VN_RELE_ASYNC to the compatibility layer with the rest of the VN_* defines 2009-05-07 23:02:15 +00:00
Jamie Gritton
b38ff370e4 Introduce the extensible jail framework, using the same "name=value"
interface as nmount(2).  Three new system calls are added:
* jail_set, to create jails and change the parameters of existing jails.
  This replaces jail(2).
* jail_get, to read the parameters of existing jails.  This replaces the
  security.jail.list sysctl.
* jail_remove to kill off a jail's processes and remove the jail.
Most jail parameters may now be changed after creation, and jails may be
set to exist without any attached processes.  The current jail(2) system
call still exists, though it is now a stub to jail_set(2).

Approved by:	bz (mentor)
2009-04-29 21:14:15 +00:00
Robert Watson
885868cd8f Remove VOP_LEASE and supporting functions. This hasn't been used since
the removal of NQNFS, but was left in in case it was required for NFSv4.
Since our new NFSv4 client and server can't use it for their
requirements, GC the old mechanism, as well as other unused lease-
related code and interfaces.

Due to its impact on kernel programming and binary interfaces, this
change should not be MFC'd.

Proposed by:    jeff
Reviewed by:    jeff
Discussed with: rmacklem, zach loafman @ isilon
2009-04-10 10:52:19 +00:00
Jamie Gritton
f86bce5ed0 Extend the "vfsopt" mount options for more general use. Make struct
vfsopt and the vfs_buildopts function public, and add some new fields
to struct vfsopt (pos and seen), and new functions vfs_getopt_pos and
vfs_opterror.

Further extend the interface to allow reading options from the kernel
in addition to sending them to the kernel, with vfs_setopt and related
functions.

While this allows the "name=value" option interface to be used for more
than just FS mounts (planned use is for jails), it retains the current
"vfsopt" name and <sys/mount.h> requirement.

Approved by:	bz (mentor)
2009-03-02 23:26:30 +00:00
Ed Schouten
802cb57e34 Add memmove() to the kernel, making the kernel compile with Clang.
When copying big structures, LLVM generates calls to memmove(), because
it may not be able to figure out whether structures overlap. This caused
linker errors to occur. memmove() is now implemented using bcopy().
Ideally it would be the other way around, but that can be solved in the
future. On ARM we don't do add anything, because it already has
memmove().

Discussed on:	arch@
Reviewed by:	rdivacky
2009-02-28 16:21:25 +00:00
Pawel Jakub Dawidek
35a15332f3 MFp4: Remove assertion that is no longer valid - we now use VOP_CLOSE() in
more places (ie vdev_file.c).
2008-11-29 12:32:42 +00:00
Pawel Jakub Dawidek
ad35ee04f4 Fix locking (file descriptor table and Giant around VFS).
Most submitted by:	kib
Reviewed by:		kib
2008-11-25 21:14:00 +00:00
Pawel Jakub Dawidek
83080c1ece Don't use PRIV_ROOT. Here we check if user can share ZFS file system, so
PRIV_NFS_DAEMON seems best choice.

Discussed with:	rwatson
2008-11-23 20:14:19 +00:00
Pawel Jakub Dawidek
1ba4a712dd Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.
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
2008-11-17 20:49:29 +00:00
Craig Rodrigues
6a73ed4f46 Remove definition of KMEM_DEBUG accidentally brought in by latest DTrace
import.

Noticed by:	thompsa
2008-11-05 20:32:13 +00:00
Craig Rodrigues
f5a97d1bcb Merge latest DTrace changes from Perforce. 2008-11-05 19:39:11 +00:00
Edward Tomasz Napierala
15bc6b2bd8 Introduce accmode_t. This is required for NFSv4 ACLs - it will be neccessary
to add more V* constants, and the variables changed by this patch were often
being assigned to mode_t variables, which is 16 bit.

Approved by:	rwatson (mentor)
2008-10-28 13:44:11 +00:00
Warner Losh
6e1a9d1739 Mips needs the same treatment for atomic_or_8 as the other RISCy
architectures.
2008-09-18 19:57:06 +00:00
Attilio Rao
59d4932531 Decontextualize vfs_busy(), vfs_unbusy() and vfs_mount_alloc() functions.
Manpages are updated accordingly.

Tested by:	Diego Sardina <siarodx at gmail dot com>
2008-08-31 14:26:08 +00:00
Scott Long
a25cb00747 Ensure that the padding calcualtion doesn't return a negative value.
Submitted by:	kib
Approved by:	jb
2008-08-29 15:55:49 +00:00
Attilio Rao
0359a12ead Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread
was always curthread and totally unuseful.

Tested by: Giovanni Trematerra <giovanni dot trematerra at gmail dot com>
2008-08-28 15:23:18 +00:00
Pawel Jakub Dawidek
28814ddbe8 We want to check new options given, not the current ones.
This fixes 'zpool import -o <mntopt> <name>' not working properly.
2008-07-21 09:45:44 +00:00
Bjoern A. Zeeb
079d3bfcfb Remove redundant redeclaration of 'zone_drain'. 2008-05-24 19:30:38 +00:00
John Birrell
25f292128c Messing with the endian defines breaks the use of other FreeBSD headers. 2008-05-23 23:03:17 +00:00
John Birrell
8599306711 OpenSolaris kernel module compatibility sources. 2008-05-23 22:39:28 +00:00
John Birrell
32a109c1d8 A 'special' compatibility header to plug OpenSolaris code. 2008-05-22 09:08:41 +00:00
John Birrell
4706efa4f6 Additional compatibility headers. 2008-05-22 08:35:03 +00:00
John Birrell
1583a68737 Compatibility stuff for DTrace. 2008-05-22 08:33:24 +00:00