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path: root/source3/smbd/oplock.c
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2003-01-30Fix for interesting resource constraint condition. When all opens areJeremy Allison1-15/+18
level 2 and a request for open with no oplock is received then the smbd should send *synchronous* break messages, not asynchronous, otherwise it spins very rapidly, releasing the lock, sending the 'break to none' messages and then re-acquiring the lock before any other process has a chance to get the lock and remove it's own oplock (at least on linux). Jeremy. (This used to be commit d1e8991a76a57b7d96dd7db3c1d9bbf5b28da88e)
2002-06-06Overly complex but neccessary fix for kernel oplock problems. The issueJeremy Allison1-0/+10
is that there are some times when we should return an EINTR from a select, some times when we should not. As we can take a signal at any time, we have to eat EINTR's in some selects. This means we need to check for kernel oplock breaks more often in the main loop, as well as add the queuing mechanism needed for the changenotify code (due to the mistake in understanding POSIX semantics w.r.t. setting a signal mask in a signal handler). This code now passes all my tests. However, (and IMHO and I know tridge disagrees) - the correct way to fix this is to run with RT signals blocked and explicitly unblock them just before the main select, block them after and then process them all in one place. Just my 2cents :-). Jeremy. (This used to be commit a8c85372e2826a07117c89b39270cde8641ce55d)
2002-05-24If we don't do the select don't do the recvfrom.Jeremy Allison1-0/+1
Jeremy. (This used to be commit f536ec62242c5c644e03afa19f4a3ebedf36f80d)
2002-05-24Fixed silly typo that causes receive_local_message to loop - caused byJeremy Allison1-1/+1
my removal of the goto. Oops ! Jeremy. (This used to be commit 4d3679e03e0c30602b1345cbf2fbf8587dff1f26)
2002-05-22Merge of bugfixes from 2.2.Jeremy Allison1-5/+5
Jeremy. (This used to be commit 5c8351228c55f2403214351f6fd16fe231aee917)
2002-05-22Fix for strangeness in Linux 2.0.x select return.Jeremy Allison1-0/+14
Jeremy. (This used to be commit 490b95a35d1e2ccd3b80db5cfcf7b9804901d36e)
2002-05-22Remove horrid goto.Jeremy Allison1-10/+5
Jeremy. (This used to be commit 7e6db250804e51ce0883b972831da455d389cdcd)
2002-05-22Merge of receive_local_message fix from 2.2.5.Jeremy Allison1-20/+16
Jeremy. (This used to be commit d4dbb9cb1338332bda3651dc4b86abcf47e9c2d2)
2002-05-21Tricky fix. If we were waiting for an oplock break response message fromJeremy Allison1-0/+11
another smbd and an incoming SIGUSR1 message arrived we'd break out of the wait early - as we have to use sys_select() to wait for an oplock response message, not sys_select_intr() (which ignores EINTR errors) because of the real time signal kernel interface. Jeremy. (This used to be commit 3bb26957e3e7fb5059d21115546d189eaca34646)
2002-05-20Merge from 2.2.Jeremy Allison1-1/+1
Jeremy. (This used to be commit 174df5d914b149e52bf260e6502f2436c2720958)
2002-04-19Fixed sendto in oplock code.Jeremy Allison1-2/+2
Jeremy. (This used to be commit 64974fa334fd757ff5cfd1bd32d7300bf8a6208c)
2002-04-19Fix oplock recvfrom.Jeremy Allison1-1/+1
Jeremy. (This used to be commit 68c0eb5ca7bc96cfdc8df07bd84f3e49de024b81)
2002-04-11This split the mangling code up to allow for the possibility of multipleAndrew Tridgell1-0/+2
mangling implementation, selectable using "mangling method = " in smb.conf It also tidies the interface a little, although it is still nasty. (This used to be commit be23d87a178e7d0691e7d942adf89bb3d2d533c2)
2002-03-14Get the current directory after becoming root.Jeremy Allison1-1/+1
Jeremy. (This used to be commit f032c6f710cb0edcf02f25db81c83478b9a8ab1e)
2002-01-31Fix from Michael Steffens <michael_steffens@hp.com> to make signalJeremy Allison1-1/+1
processing work correctly in winbindd. This is a really good patch that gives full select semantics to the Samba modified select. Jeremy. (This used to be commit 3af16ade173cac24c1ac5eff4a36b439f16ac036)
2002-01-30Removed version number from file header.Tim Potter1-2/+1
Changed "SMB/Netbios" to "SMB/CIFS" in file header. (This used to be commit 6a58c9bd06d0d7502a24bf5ce5a2faf0a146edfa)
2001-11-05Don't put a \n on the end of the arg to exit_server()Tim Potter1-2/+2
(This used to be commit dfb8566220c3e90ca2b757ea124f53aed103269e)
2001-10-23IRIX compiler dies not like casts in macro argsHerb Lewis1-1/+1
(This used to be commit 1b3123df48ca586b3d9c86a152354690836f6beb)
2001-10-20Move from timestamp to gen count file id's for finding oplocked filesJeremy Allison1-835/+784
in a tdb. Jeremy. (This used to be commit 058ae6b58f61ef46013dd076af3a84de5fbaaab1)
2001-10-18Merge the become_XXX -> change_to_XXX fixes from 2.2.2 to HEAD.Jeremy Allison1-2/+2
Ensure make_conection() can only be called as root. Jeremy. (This used to be commit 8d23a7441b4687458ee021bfe8880558506eddba)
2001-10-02Removed 'extern int DEBUGLEVEL' as it is now in the smb.h header.Tim Potter1-2/+0
(This used to be commit 2d0922b0eabfdc0aaf1d0797482fef47ed7fde8e)
2001-09-17move to SAFE_FREE()Simo Sorce1-6/+4
(This used to be commit a95943fde0ad89ae3f2deca2f7ba9cb5ab612b74)
2001-09-05Fix I think for the fcntl spinning problem. Re-prioritize soJeremy Allison1-0/+14
that oplock break messages get priority over incoming client messages. Jeremy. (This used to be commit 1779f6a223dad87c3b8451d09b9808b46495a8b6)
2001-09-04Fixes to ensure invalid vuids cannot stop oplock breaks.Jeremy Allison1-5/+7
This may have bearing on the Solaris fcntl spin bug. Jeremy. (This used to be commit 0f676202529cbfead629d2c228b7d5abc2dff7d6)
2001-08-22Fixed the (incorrect) paranioa fix I put in for the fcntl lock spin.Jeremy Allison1-2/+12
Don't delete a share mode that failed to remove the oplock (doh!), just set the oplock entry to zero.... Jeremy. (This used to be commit fe4aa720181a43f7a636ca029680fab0c836b968)
2001-08-21This is Jeremy pretending to be Volker, 'cos theVolker Lendecke1-0/+13
link from Seattle is having problems. I've added 3 things here to work on the fcntl spin problem. 1). Check *all* tdb return codes... :-). 2). If we're asking ourselves to break an oplock, and we can't find a fsp pointer that matches the entry, this is a *logic bug* and we should abort and panic so someone with gdb can pick up the pieces. 3). After we've broken an oplock, ensure that the entry itself has been removed, and if not remove it ourselves. This should not be neccessary in a correctly working environmen,t, but will provide an added layer of robustness in error situations. 4). I hate german keyboards :-) :-). Jeremy. (This used to be commit 1c94fa80646f9e31377fbb41332fe4780f550cab)
2001-06-25fixed usage of socklen_t and also tidied up SIG_ATOMIC_T, using a typedef ↵Andrew Tridgell1-1/+1
instead of a define (This used to be commit e2ecff419fdc0a0dc7551b33b377dc11061ef2a3)
2001-06-09*Wonderful* patch from Andrew Bartlett that will help ensure tdb's areJeremy Allison1-2/+4
cleaned on clients abending connections. Thanks Andrew ! Jeremy. (This used to be commit 1b3977c5367a0b713b194f369abd9872ae01ac2a)
2001-05-24Fixup the large_writex problem (a large_writex can send a full 64k of data,Jeremy Allison1-2/+2
we already have space for this we just need to understand the length correctly). Jeremy. (This used to be commit 19145bae720bbcc32dcab380c62a33d1f0e3eef0)
2001-03-11Merge of new 2.2 code into HEAD (Gerald I hate you :-) :-). Allows new SAMRJeremy Allison1-6/+0
RPC code to merge with new passdb code. Currently rpcclient doesn't compile. I'm working on it... Jeremy. (This used to be commit 0be41d5158ea4e645e93e8cd30617c038416e549)
2001-01-30Fix inspited by Alan Romeril. 50% speedup in domain logins with thisJeremy Allison1-0/+3
change to default break response time of 10ms -> 0ms. Jeremy. (This used to be commit 541c7df16fff03f98c253a46b501574cafb4469f)
2000-11-16Ok - fixed a bug in our levelII oplock code. We need to break a level II onJeremy Allison1-4/+95
a byte range lock (write lock only, but Win2k breaks on read lock also so I do the same) - if you think about why, this is obvious. Also fixed our client code to do level II oplocks, if requested, and fixed the code where we would assume the client wanted level II if it advertised itself as being level II capable - it may not want that. Jeremy. (This used to be commit 213cd0b5192307cd4b0026cae94b2f52fb1b0c02)
2000-09-27Restructuring of the code to remove dos_ChDir/dos_GetWd and re-vector themJeremy Allison1-2/+2
through the VFS. All file access/directory access code in smbd should now go via the vfs. Added vfs_chown/vfs_chmod calls. Still looking at vfs_get_nt_acl() vfs_set_nt_acl() call API design. Jeremy. (This used to be commit f96625ec124adb6e110dc54632e006b3620a962b)
2000-06-12totally rewrote the async signal, notification and oplock notificationAndrew Tridgell1-26/+29
handling in Samba. This was needed due to several limitations and races in the previous code - as a side effect the new code is much cleaner :) in summary: - changed sys_select() to avoid a signal/select race condition. It is a rare race but once we have signals doing notification and oplocks it is important. - changed our main processing loop to take advantage of the new sys_select semantics - split the notify code into implementaion dependent and general parts. Added the following structure that defines an implementation: struct cnotify_fns { void * (*register_notify)(connection_struct *conn, char *path, uint32 flags); BOOL (*check_notify)(connection_struct *conn, uint16 vuid, char *path, uint32 flags, void *data, time_t t); void (*remove_notify)(void *data); }; then I wrote two implementations, one using hash/poll (like our old code) and the other using the new Linux kernel change notify. It should be easy to add other change notify implementations by creating a sructure of the above type. - fixed a bug in change notify where we were returning the wrong error code. - rewrote the core change notify code to be much simpler - moved to real-time signals for leases and change notify Amazingly, it all seems to work. I was very surprised! (This used to be commit 44766c39e0027c762bee8b33b12c621c109a3267)
2000-06-11Linux kernel oplocks now seem to work, but need a _lot_ of testingAndrew Tridgell1-0/+9
I had to modify sys_select() to not loop on EINTR. I added a wrapper called sys_select_intr() which gives the old behaviour. (This used to be commit b28cc4163bc2faaa80c5782fc02c8f03c410cdeb)
2000-06-10a first pass at Linux kernel oplocks supportAndrew Tridgell1-13/+0
(This used to be commit 3253085d9883a181c04b9c9ecf7d0ccdfbcee88d)
2000-06-10continued the split of the kernel level oplocks code into a moreAndrew Tridgell1-377/+122
modular form. In this pass I added oplock_irix.c and added a "struct kernel_oplocks" that describes a kernel oplock implementation. (This used to be commit b5ceab810292602ea9a81696c20a781c16b706c2)
2000-06-09clean up oplock capability code ready for Linux codeAndrew Tridgell1-152/+149
(This used to be commit 70dcc791b45ac64fc536ef449e4e6b53b2b68fd4)
2000-06-09split some of the irix kernel oplocks code into a functionAndrew Tridgell1-68/+74
(This used to be commit 6b888d600d95e2595c3f79494edcc55e88e2980d)
2000-06-08- changed HAVE_KERNEL_OPLOCKS to HAVE_KERNEL_OPLOCKS_IRIXAndrew Tridgell1-14/+14
- added autoconf test for HAVE_KERNEL_OPLOCKS_LINUX (This used to be commit 0368f68529a9244663c199068e95d1a1d93152fa)
2000-05-10more merging voodooAndrew Tridgell1-0/+4
this adds "#define OLD_NTDOMAIN 1" in lots of places. Don't panic - this isn't permanent, it should go after another few merge steps have been done (This used to be commit 92109d7b3c06f240452d39f669ecb8c9c86ab610)
2000-05-02Added sys_fork() and sys_getpid() functions to stop the overheadJeremy Allison1-3/+3
of doing a system call every time we want to just get our pid. Jeremy. (This used to be commit 148628b616b5c29ba6340d65fc3ddbcabba6e67a)
2000-04-24Now that fsp's are created on successful file open, the structure memberJeremy Allison1-2/+2
fsp->open is no longer needed (if an fsp pointer is valid, then it's open :-). NB for Luke, this patch also did not apply to TNG. TNG is not yet identical w.r.t file serving with HEAD. This makes it impossible for me to help maintain TNG. Please fix asap. lib/substitute.c: Removed unused variable (pidstr). Jeremy. (This used to be commit 389b700a26e8a308a0dff6fc038c38068aa0119a)
2000-04-11finally got sick of the "extern int Client" code and the stupidAndrew Tridgell1-7/+3
assumption that we have one socket everywhere while doing so I discovered a few bugs! 1) the clientgen session retarget code if used from smbd or nmbd would cause a crash as it called close_sockets() which closed our main socket! fixed by removing close_sockets() completely - it is unnecessary 2) the caching in client_addr() and client_name() was bogus - it could easily get fooled and give the wrong result. fixed. 3) the retarget could could recurse, allowing an easy denial of service attack on nmbd. fixed. (This used to be commit 5937ab14d222696e40a3fc6f0e6a536f2d7305d3)
2000-04-10the bulk of the changes to get rid of fd_ptr and move print openAndrew Tridgell1-27/+25
handling to printing/printing.c most of this was just replacing things like fsp->fd_ptr->fd with fsp->fd the changes in open.c are quite dramatic. Most of it is removing all the functions that handled the fd multiplexing (This used to be commit d1827a3648009fd0a0d165055015d9aeda7a1037)
1999-12-21converted all our existing shared memory code to use a tdb databaseAndrew Tridgell1-8/+7
instead of either sysv or mmap shared memory or lock files. this means we can now completely remove locking_shm.c locking_slow.c shmem.c shmem_sysv.c and lots of other things also got simpler locking.c got a bit larger, but is much better compartmentalised now (This used to be commit e48c2d9937eea0667b8cd3332e49c06314ef31e7)
1999-12-13first pass at updating head branch to be to be the same as the SAMBA_2_0 branchAndrew Tridgell1-198/+466
(This used to be commit 453a822a76780063dff23526c35408866d0c0154)
1999-12-01sys_select added one more argument (read, write selectors).Luke Leighton1-1/+1
(This used to be commit e4d92ff9dfc51735e6932748f66a7c20b2c1cb6a)
1998-12-05Sync up critical kernel oplock bugfix. I don't want to loseJeremy Allison1-4/+37
this.... Jeremy. (This used to be commit 5287f3d19b7d8e76970f1ce1abfd95b7341434e5)
1998-11-25Makefile.in: Added maintainer mode fixes.Jeremy Allison1-2/+2
aclocal.m4: Added AC_LIBTESTFUNC. configure.in: Fixed -lsecurity -lsec problems. client.c: dos_ fixes. groupdb/aliasunix.c: Dead code removal. include/includes.h: Added default PRINTCAP_NAME. lib/genrand.c: dos_ fixes. lib/replace.c: Added strtoul. lib/system.c: dos_ fixes. lib/util.c: dos_ fixes. lib/util_sid.c: Signed/unsigned fixes. lib/util_str.c: removed bad const. locking/locking_slow.c: dos_ fixes. printing/printing.c: dos_ fixes. rpc_server/srv_samr.c: Dead code removal. rpc_server/srv_sid.c: global_myworkgroup defined with wrong size AGAIN ! smbd/dir.c: dos_ fixes. smbd/open.c: dos_ fixes. smbd/oplock.c: dos_ fixes. smbd/reply.c smbd/server.c smbd/service.c smbd/uid.c: dos_ fixes. Jeremy. (This used to be commit 6acb4b68f68d516e2ac3c47e500f5600d653435e)
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