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share_access support). This is enough for us to pass the BASE-DENY2
test, but is a long way from fully correct share modes.
(This used to be commit b5a6dd3cbf28a3a3b3a3656042ac8f50fca29e1c)
zeroing. This makes it clearer what bits are not yet implemented (and
is more valgrind friendly)
(This used to be commit 18b471327b596f3ea8f6a7b39ba0a83b2584ed0b)
pvfs_open, and handle the various race conditions that are inherent in
cifs on unix, so we do the best we can when the race happens.
the ntcreatex code is really starting to take shape now
(This used to be commit 395c3815b468ae55de9a1135e478711f0e7d8cfc)
want to expose the brl context structure outside the brlock.c
code. Instead, I now use "struct brl_context *" and rely on C being
happy to pass around pointers to unknown structures as long as they
are not dereferenced. I will be interested to see how the build farm
likes this.
(This used to be commit cb155c8ad837285c5a7f5b104968239df0b65fd2)
preparation for the full share modes and ntcreatex code that I am
working on.
highlights include:
- changed the way a backend determines if it is allowed to process a
request asynchronously. The previous method of looking at the
send_fn caused problems when an intermediate ntvfs module disabled
it, and the caller then wanted to finished processing using this
function. The new method is a REQ_CONTROL_MAY_ASYNC flag in
req->control_flags, which is also a bit easier to read
- fixed 2 bugs in the readbraw server code. One related to trying to
answer a readbraw with smb signing (which can't work, and crashed
our signing code), the second related to error handling, which
attempted to send a normal SMB error packet, when readbraw must
send a 0 read reply (as it has no header)
- added several more ntvfs_generic.c generic mapping functions. This
means that backends no longer need to implement such esoteric
functions as SMBwriteunlock() if they don't want to. The backend
can just request the mapping layer turn it into a write followed by
an unlock. This makes the backends considerably simpler as they
only need to implement one style of each function for lock, read,
write, open etc, rather than the full host of functions that SMB
provides. A backend can still choose to implement them
individually, of course, and the CIFS backend does that.
- simplified the generic structures to make them identical to the
principal call for several common SMB calls (such as
RAW_WRITE_GENERIC now being an alias for RAW_WRITE_WRITEX).
- started rewriting the pvfs_open() code in preparation for the full
ntcreatex semantics.
- in pvfs_open and ipc_open, initially allocate the open file
structure as a child of the request, so on error we don't need to
clean up. Then when we are going to succeed the open steal the
pointer into the long term backend context. This makes for much
simpler error handling (and fixes some bugs)
- use a destructor in the ipc backend to make sure that everthing is
cleaned up on receive error conditions.
- switched the ipc backend to using idtree for fnum allocation
- in the ntvfs_generic mapping routines, use a allocated secondary
structure not a stack structure to ensure the request pointer
remains valid even if the backend replies async.
(This used to be commit 3457c1836c09c82956697eb21627dfa2ed37682e)
an extremely efficient way of mapping from an integer handle (such as
an open file handle) to a pointer (such as the structure containing
the open file information). The code is taken from lib/idr.c in the
2.6 Linux kernel, and is very fast and space efficient. By using
talloc it even has auto cleanup.
This commit converts the handling of open file handles and open
directory search handles to use the idtree routines. In combination
with talloc destructors, this simplifies the structure handling in the
pvfs backend a lot. For example, we no longer need to keep a linked
list of open directory searches at all, and we no longer need to do
linear scans of the list of open files on most operations.
The end result is that the pvfs code is now extremely scalable. You
can have 10s of thousands of open files and open searches and the code
still runs very fast.
I have also added a small optimisation into the file close path, to
avoid looking in the byte range locking database if we know that there
are no locks outstanding.
(This used to be commit 16835a0ef91a16fa01145b773aad8d43da215dbf)
in the right state when called. For example, when we use the unixuid
handler in the chain of handlers, and a backend decides to continue a
call asynchronously then we need to ensure that the continuation
happens with the right security context.
The solution is to add a new ntvfs operation ntvfs_async_setup(),
which calls all the way down through the layers, setting up anything
that is required, and takes a private pointer. The backend wanting to
make a async calls can use ntvfs_async_setup() to ensure that the
modules above it are called when doing async processing.
(This used to be commit a256e71029727fa1659ade6257085df537308c7d)
operation asynchronously (such as the nbench module), then ignore lock
timeouts, as they would make no sense
(This used to be commit 2894dd0ac0ddd0ae5b4d536d5cff0690bbfab1a0)
- added a pvfs_lock_close_pending() hook to remove pending locks on file close
- fixed the private ptr argument to messaging_deregister() in pvfs_wait
- fixed a bug in continuing lock requests after a lock that is blocking a pending lock is removed
- removed bogus brl_unlock() call in lock continue
- corrected error code for LOCKING_ANDX_CHANGE_LOCKTYPE
- expanded the lock cancel test suite to test lock cancel by unlock and by close
- added a testsuite for LOCKING_ANDX_CHANGE_LOCKTYPE
(This used to be commit 5ef80f034d4aa4dd6810532c63ad041bfc019cb8)
This adds a pvfs_wait_message() routine which uses the new messaging
system, event timers and talloc destructors to give a nice generic
async event handling system with a easy to use interface. The
extensions to pvfs_lock.c are based on calls to pvfs_wait_message()
routines.
We now pass all of our smbtorture locking tests, although while
writing this code I have thought of some additonal tests that should
be added, particularly for lock cancel operations. I'll work on that
soon.
This commit also extends the smbtorture lock tests to test the rather
weird 0xEEFFFFFF locking semantics that I have discovered in
win2003. Win2003 treats the 0xEEFFFFFF boundary as special, and will
give different error codes on either side of it. Locks on both sides
are allowed, the only difference is which error code is given when a
lock is denied. Anyone like to hazard a guess as to why? It has
me stumped.
(This used to be commit 4395c0557ab175d6a8dd99df03c266325949ffa5)
enough for us to pass locktest, but does not yet support lock timeouts
and some of the other esoteric features.
(This used to be commit 58a92abd88f190bc60894a68e0528e95ae33fe39)
- don't check for '.' specially in checking for legal names. Longhorn
doesn't do this any more, and its a real pain. Longhorn allows for
filenames ending in '.', and with as many '.' elements as you like.
(This used to be commit 0a475175c53016bfa5b8246819676ddcd8b66feb)
heavily modified to suit the Samba4 architecture.
Samba4 with posix backend now passes the BASE-MANGLE test
(This used to be commit ed52d69e8a065b6a8df2fb73c89be67acfdbca65)
when opening directories. This change allows samba4 server to work
with longhorn client.
(This used to be commit 4a8b0302eff37ccfcb66b91259ee5da20879c652)
conjunction with the posix backend this gives us a way to correctly
setup the unix security context in Samba4.
I chose the following method to determine the unix uid's and gid's to
use given the list of SIDs from the login process
- look for a "UnixID" field in the sam record. If present, then use it
(check if the record is of the right type as well)
- if UnixID is not present, then look for the "UnixName" sam
field. If it is present then use getpwnam() or getgrnam() to find
the unix id.
- if UnixID and UnixName are not present, then look for a unix
account of the right type called by the same name as the sAMAccountName field.
- if none of the above work then fail the operation with NT_STATUS_ACCESS_DENIED
obviously these steps only work well with a local SAM. It will need to
be more sophisticated in future.
I did not put any cache in place at all. That will need to be added
for decent performance.
(This used to be commit 78b67d19b9766131f0270e451089ee5bb1aa8bd9)
- the stacking of modules
- finding the modules private data
- hide the ntvfs details from the calling layer
- I set NTVFS_INTERFACE_VERSION 0 till we are closer to release
(because we need to solve some async problems with the module stacking)
metze
(This used to be commit 3ff03b5cb21bb79afdd3b1609be9635f6688a539)
taking a context (so when you pass a NULL pointer you end up with
memory in a top level context). Fixed it by changing the API to take a
context. The context is only used if the pointer you are reallocing is
NULL.
(This used to be commit 8dc23821c9f54b2f13049b5e608a0cafb81aa540)
rather than manual reference counts
- properly support SMBexit in the cifs and posix backends
- added a logoff method to all backends
With these changes the RAW-CONTEXT test now passes against the posix backend
(This used to be commit c315d6ac1cc40546fde1474702a6d66d07ee13c8)
on abnormal termination of a connection. As long as the top level
connection structure is freed then that should cascade down to the
file structure, and call this destructor which will close the open file descriptor.
In general I'd like to use this technique in any place in Samba4 where
we hold operating system resources that we need to make sure are
released on abnormal termination.
(This used to be commit ed87b7fcbd9fedc155528ce6dd8ab5d5fce637b2)
(recently Linux systems support this, allowing us to support the
full resolution in NTTIME)
- use nanosecond resolution in the posix backend if available
- moved the configure tests and list of object files for the posix
backend into ntvfs/posix/ to keep them more neatlly separated.
(This used to be commit d92ad9f307fe16a3b253a0555b437f14c94b4dd7)
ntvfs handler = nbench posix
and the nbench pass-thru module will be called before the posix
module. The chaining logic is now much saner, and less racy, with each
level in the chain getting its own private pointer rather than relying
on save/restore logic in the pass-thru module.
The only pass-thru module we have at the moment is the nbench one
(which records all traffic in a nbench compatibe format), but I plan
on soon writing a "unixuid" pass-thru module that will implement the
setegid()/setgroups()/seteuid() logic for standard posix uid
handling. This separation of the posix backend from the uid handling
should simplify the code, and make development easier.
I also modified the nbench module so it can do multiple chaining, so
if you want to you can do:
ntvfs module = nbench nbench posix
and it will save 2 copies of the log file in /tmp. This is really only
useful for testing at the moment until we have more than one pass-thru
module.
(This used to be commit f84c0af35cb54c8fdc4933afefc18fa4c062aae4)
original core level calls). The old code was completely wrong in many respects.
also fixed the EA_SIZE level in the server
extended the RAW-SEARCH test suite to test the new code properly
(This used to be commit 71480271ad84b57fcdde264a54bb2408cf783255)
this is still just a skeleton, and many of the functions are just
based on the simple vfs backend, they are there to allow me to run
smbtorture tests against the real parts of the posix backend.
(This used to be commit f2fa7fe565e89360dba3bb5434d3a6a36f398348)
this is still very much a skeleton (with many limbs missing too!). I
am committing this early to get some feedback on the approach taken.
(This used to be commit 40d5cae5ebbfe328e193eadb685df6a370730299)
