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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)
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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)
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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)
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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)
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(This used to be commit dac00ef3b0d0f8467367d7b6ff77db7b63a042cc)
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heavily modified to suit the Samba4 architecture.
Samba4 with posix backend now passes the BASE-MANGLE test
(This used to be commit ed52d69e8a065b6a8df2fb73c89be67acfdbca65)
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considerably more complete than the simple handler
(This used to be commit e6ecd31be8e91f552d891c41b2f8737519a490a1)
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- 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)
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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)
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of 16 bytes, caused by the 16 byte data_blob in the smb_signing
code.
(This used to be commit 2f1b788e09686e065d22f621f5c0c585192c6740)
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something like:
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)
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(This used to be commit 98c1c75076fdb0df3a7c616f8c2e1ed138a6ff9a)
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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)
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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)
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(This used to be commit fdb675bbad1322ddd94c646f67803b9678468a64)
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note that this is just a skeleton so far. More to come soon.
(This used to be commit efc8850b9aa9348f5f7c4b342aa76dab1635e7d4)
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(This used to be commit 21ef338cbbe96acc8594ffc550ef60c6a40fb951)
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metze
(This used to be commit a908f831cb9dd265f9b183512053f9e608feec3d)
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metze
(This used to be commit a6c0ca9de52b2395b092cb245bb94cbd55dfdd46)
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metze
(This used to be commit a85d2db5826a84b812ea5162a11f54edd25f74e3)
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and print out an error message to the debug log which say:
use 'cifs' or 'simple' as ntvfs handler
this also warns about 'root' fileaccess in the 'simple' module
the 'default' ntvfs handler is now registered by the posix backend
metze
(This used to be commit 84b3589daa60cfdd2c868d9468192b0a6e1eebae)
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CVS: Enter Log. Lines beginning with `CVS:' are removed automatically
CVS:
CVS: Committing in .
CVS:
CVS: Modified Files:
CVS: Makefile.in configure.in include/includes.h include/ntvfs.h
CVS: include/smb.h lib/iconv.c lib/module.c ntvfs/ntvfs_base.c
CVS: ntvfs/cifs/vfs_cifs.c ntvfs/ipc/vfs_ipc.c
CVS: ntvfs/posix/vfs_posix.c ntvfs/print/vfs_print.c
CVS: ntvfs/reference/vfs_ref.c ntvfs/simple/vfs_simple.c
CVS: passdb/pdb_interface.c
CVS: Added Files:
CVS: include/module.h
CVS: ----------------------------------------------------------------------
Update to the modules system. Fixed:
- get rid of smb_probe_module
- merge older updates from 3.0
- introduced register_subsystem() and register_backend() functions
- adapt ntvfs and charset to use new register functions
- made smb_load_modules() work recursively (e.g. 'preload modules = /usr/lib/samba')
- got rid of some old remains
Things that still need work:
- Did I break tankFS? I don't think so, but I can't test it here :-(
- Add 'postload modules = ' (for modules that need to be loaded after fork() in smbd, if applicable)
- Convert RPC, auth, passdb, etc to use new register_{subsystem,backend}() functions
- Accept wildcards in 'preload modules' option, instead of loading recursively
(This used to be commit 7512b9ab1a8b3103f7a6c13f736353c46a26b668)
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(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
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