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path: root/source3/locking/locking.c
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2001-07-02Fixed the nastiest locking bug to track down.... smb_pids are sent in theJeremy Allison1-6/+6
lockingX calls - use that instead of smb_pid in the packet. Jeremy. (This used to be commit a3925cb9c6303ce24e5fecad6c8f3a0ba78b9ee0)
2001-06-30Ensure we return correct error on trying to unlock a region not locked.Jeremy Allison1-2/+2
Jeremy. (This used to be commit 015a077acc49e59179dc10256fd32166ee4623e2)
2001-06-30Fixed the first locking error (test #8 found by locktest code fromJeremy Allison1-3/+15
Clarion locktest. Jeremy. (This used to be commit 5c42845b5bb6fafd0ebf93fbdd23d9bf861da865)
2001-06-04use LDSHFLAGS not -shared in several placesAndrew Tridgell1-1/+1
(This used to be commit 8ec9c87b5d1a7dae17d5b1a30f58effaf5e69e4b)
2001-05-22Defensive brlock and locking database cleaning code.Jeremy Allison1-2/+81
Jeremy. (This used to be commit d7aa42e4593b02ee6e487f7a4633bd7e7620ef2f)
2001-03-30This is a big, rather ugly patch. Whilst investigating the files not truncatedJeremy Allison1-32/+39
when copying to a full disk problem, I discovered that we were not allowing the delete on close flag to be set properly, this led to other things, and after investigation of the proper delete on close semantics and their relationship to the file_share_delete flag I discovered there were some cases where we weren't doing the deny modes properly. And this after only 5 years working on them..... :-) :-). So here's the latest attempt. I realised the delete on close flag needs to be set across all smbds with a dev/ino pair open - in addition, the delete on close flag, allow share delete and delete access requested all need to be stored in the share mode tdb. The "delete_on_close" entry in the fsp struct is now redundant and should really be removed. This may also mean we can get rid of the "iterate_fsp" calls that I didn't like adding in the first place. Whilst doing this patch, I also discovered we needed to do the se_map_generic() call for file opens and POSIX ACL mapping, so I added that also. This code, although ugly, now passes the deny mode torture tests plus the delete on close tests I added. I do need to add one more multiple connection delete on close test to make sure I got the semantics exactly right, plus we should also (as Andrew suggested) move to random testing here. The good news is that NT should now correctly delete the file on disk full error when copying to a disk :-). Jeremy. (This used to be commit 51987684bd231c744da2e5f3705fd236d5616173)
2001-03-11Merge of new 2.2 code into HEAD (Gerald I hate you :-) :-). Allows new SAMRJeremy Allison1-7/+4
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)
2000-12-06tdb_unlockchain() no longer returns a valueTim Potter1-4/+4
(This used to be commit aee52c7acf138f8fd651aeb3d9bef79f99d1a2a9)
2000-12-06Changed to sourceforge tdb code. This includes spinlocks (so we now haveJeremy Allison1-4/+4
a --with-spinlocks option to configure, this does mean the on-disk tdb format has changed, so 2.2alphaX sites will need to re-create their tdb's. The upside is no more tdb fragmentation and a +5% on netbench. Swings and roundabouts.... Jeremy. (This used to be commit 9dea7b7c257db487f8ced7dad3fce92fba03ea91)
2000-09-11the first cut of the internal messaging system.Andrew Tridgell1-1/+1
The motivation for this system is to replace the UDP message for oplocks, but this commit only does the "set debug level" message. (This used to be commit 2a34ee95f3929cff131db6c5a2b4820194c05b2d)
2000-06-13allow posix locking database to be opened read-only (for smbstatus)Andrew Tridgell1-1/+1
(This used to be commit b9d78738bb30da3d989dfacc95cfde529f2afca5)
2000-05-10Using a structure for a tdb key can lead to insideous, hardHerb Lewis1-0/+2
to find bugs. On 64 bit IRIX, structure packing means that a struct { SMB_DEV_T dev /* 4 bytes */ SMB_INO_T ino /* 8 bytes */ } has 4 bytes of padding between the two members. If you don't null the memory before using it as a tdb key, you randomly can't find keys depending on what is in the padding. This caused me immense pain and was hard to track down.... :-) Jeremy. (This used to be commit f2a5ba3f0939f59097f0ef6a25f1cf9b5574f157)
2000-05-05Fix for uninitialized memory read in brlock code. brl_locktest now needsJeremy Allison1-1/+1
to correctly set the fnum, as the brl_conflict code looks at it. Jeremy. (This used to be commit df87259a356b91989604a10b3691480dcd16cf3f)
2000-05-02Added sys_fork() and sys_getpid() functions to stop the overheadJeremy Allison1-8/+8
of doing a system call every time we want to just get our pid. Jeremy. (This used to be commit 148628b616b5c29ba6340d65fc3ddbcabba6e67a)
2000-04-28Ok - this is the *third* implementation of this (third time's the charm :-).Jeremy Allison1-628/+13
This implementation keeps all POSIX lock records in a separate in memory tdb database only known about in locking/posix.c. In addition, the pending close fd's are also held in a tdb which has an array of fd's indexed by device and inode. The walk-split code uglyness has been moved to posix.c from brlock.c, which is the only place that needs to know about it, and the extra functions hacked into brlock to expose internal state have been removed. This implementation passes smbtorture locktest4, the only thing I need to check now for completeness is what to do about lock upgrade/downgrades which Win32 allows under some *very* strange circumstances. Jeremy. (This used to be commit 3f655de1c764b9ee1472a111621d4317f19f624d)
2000-04-28Forgot to close when "posix locking" is set to False.Jeremy Allison1-2/+5
Jeremy. (This used to be commit b812f09ba8ef074c9ff0747ea03a1e33f1ebbe71)
2000-04-28Added optimization where we are single opener (don't free POSIX locks).Jeremy Allison1-1/+21
Jeremy. (This used to be commit a2deb91128d59ad04f4ec858ffe4e30f2afb0edd)
2000-04-28Made changes suggested by Andrew review.Jeremy Allison1-37/+52
fd_close now calls fd_close_posix() directly. set_posix_lock/release_posix_lock() now handle the reference counting. More changes due when this gets moved to the file locking/posix.c Jeremy. (This used to be commit 239abd48f049c6a8d2bbc0636eacf347ab77588c)
2000-04-27Ok - this is more subtle than it looks :-).Jeremy Allison1-7/+13
When a file is being closed, once it passes the fnum and tid tests then the locking context should be ignored when removing all locks. This is what is done in the brl close case, but when you have outstanding POSIX locks, then you cannot remove all the brl locks in one go, you have to get the lock list and call do_unlock individually. As this uses global_smbpid as the locking context, you need to make sure that this is set correctly for the specific lock being removed. I now do this by storing the smbpid in each entry in the unlock list returned from the query call. I removed the smbpid from fsp (not needed) and things seem ok (even with the stupid smbpid tricks that smbtorture plays :-). Jeremy. (This used to be commit 6baa96bb466915cc17e8cbad50254d6bd47b967b)
2000-04-27Fixed subtle unlocking bug when a file is closed. We need to store theJeremy Allison1-6/+5
smbpid used when a file was opened in the files_struct. Else we use the wrong global_smbpid when we are closing the file and trying to remove the brl locks - this causes the brl locks to be left when the file is closed as the samba_context check fails. Jeremy. (This used to be commit 2746e5602e493e5b022764b4b839eb4d2f14363b)
2000-04-27Did the rewrite Andrew wanted where all knowledge of POSIX locking isJeremy Allison1-5/+179
removed from the smbd/open.c code. We now use a dlink list of structures indexed by dev/inode to store all pending fd's for close. This could be rewritten to use lib/hash.c if this is discovered to be too slow in use. Andrew, please take a look and let me know if this is what you had in mind. Jeremy. (This used to be commit 0487841120a7584da9a2b83b9574562c415d7024)
2000-04-27Fixed crash bugs Andrew pointed out with LOCK4 smbtortureJeremy Allison1-10/+7
test. Was miscounting posix locks, plus was not taking into account the case where other_fsp == fsp in the 'move locks' case. DOH ! This code will be re-written anyway :-). Jeremy. (This used to be commit 5278ec016cb24d8263fe6e7c1d389f466270ef24)
2000-04-25Added the hard code :-).Jeremy Allison1-50/+121
HEAD should now map brl locks correctly into POSIX locks, including the really nasty case of large range unlock. There is a lot of pretty ASCII art in locking/brlock.c explaining exactly how this code works. If it is unclear, please ask me. Jeremy. (This used to be commit 135855dbd3b8934a49229b81646cd4469acba926)
2000-04-24Added the code that keeps fd's open across a close if there are other fsp'sJeremy Allison1-36/+23
open on the same dev/inode pair with existing POSIX locks. This is done at the smbd/open layer, so smbd just calls fd_close() and the transfer of any open fd's is done under the covers of fd_close(). When an fsp is closed and no other fsp's open on the same dev/inode pair have existing POSIX locks then all fd's associated with this fsp are closed. Now only the hard part of doing the POSIX range unlock code when read locks overlap remains for full POSIX/SMB lock integration.... Jeremy. (This used to be commit 1df48ed55ee303b6d84d7277fd79761cfe5f7052)
2000-04-23fixed a locking database bug - it was actually harmless except thatAndrew Tridgell1-2/+10
smbstatus could display the wrong filename when files change dev/inum after a rename (This used to be commit 990b16fcf7af74f376db157a3e5de7bb68c1a4a1)
2000-04-22This is a *big* checkin that may break some things, but implements theJeremy Allison1-1/+2
new open mechanism Andrew & I discussed. config.sub: configure: Included the QNX patch. include/vfs.h: smbd/vfs-wrap.c: smbd/vfs.c: Added ftruncate vfs call (needed). Note that we will also need locking calls in the vfs (to be added). lib/util_unistr.c: nmbd/nmbd_processlogon.c: Fix for NT domain logons causing nmbd to core dump. Also fix for sidsize DOS bug. locking/locking.c: Check value of ret before using it for memdup. printing/printing.c: Convert print_fsp_open to return an allocated fsp. rpc_server/srv_lsa.c: Fix for NT domain logons. I have removed all use of lp_share_modes() from the code (although I left the parameter in the table for backwards compatibility). It no longer makes sense for this to exist. smbd/close.c: Removed lp_share_modes(). smbd/fileio.c: Fixed parameters to unlock_share_entry call in panic code. smbd/files.c: Correctly set the unix_ERR_code to ERRnofids on fsp allocation fail. smbd/nttrans.c: smbd/reply.c: smbd/trans2.c: Changed all occurrences of open_file_shared/open_directory/ open_file_stat to return an fsp from the call. smbd/open.c: Changed all occurrences of open_file_shared/open_directory/ open_file_stat to return an fsp from the call. In addition I have fixed a long standing race condition in the deny mode processing w.r.t. two smbd's creating a file. Andrew, please note that your original idea of using open with O_EXCL in this case would not work (I went over the races very carefully) and so we must re-check deny modes *after* the open() call returns. This is because there is a race between the open with O_EXCL and the lock of the share mode entry. Imagine the case where the first smbd does the open with O_EXCL and a deny mode of DENY_ALL, but is pre-empted before it locks the share modes and creates the deny mode entry for DENY_ALL. A second smbd could then come in with O_RDONLY and a deny mode of DENY_NONE and the two opens would be allowed. The *only* way to fix this race is to lock the share modes after the open and then do the deny mode checks *after* this lock in the case where the file did not originally exist. This code will need extensive testing but seems to initially work. Jeremy. (This used to be commit ab0ecc39d688f16b9692fe90b991f0b89287070a)
2000-04-18locking/locking.c: Fixed placeholder code for POSIX locking.Jeremy Allison1-17/+49
printing/printing.c: Cast tdb_delete to (tdb_traverse_func) to stop warning. tmpfile gives mirror warning. smbd/groupname.c: Remember to file_lines_free() on exit. tdb/tdb.h: Add tdb_traverse_func typedef. Jeremy (This used to be commit 204ca1195c86499bd9beb273ce573db7a56ccead)
2000-04-13Typo - missing '}'.Jeremy Allison1-0/+1
Jeremy. (This used to be commit 0216d81f061ee599a798fdbf25625fbbbd88ef08)
2000-04-12Removed "ole locking compat" parameter (no longer used).Jeremy Allison1-18/+113
We now get/set/check POSIX locks, but I still need to code up the close fd braindamage... Jeremy. (This used to be commit 3de058bd43976853b0ed2b6b5529e2a3a08909eb)
2000-04-12Implmented mapping of lock offset/count from 64 bit MS rangesJeremy Allison1-13/+157
to either 63 or 31 bit POSIX ranges. Code to get these locks not yet added. Jeremy. (This used to be commit 9c3b9146a3baff4b2e403ae8fac6c48df1b7e642)
2000-04-12Code to map tdb locks onto POSIX. Mainly placeholder code at the moment,Jeremy Allison1-9/+157
but the structure is done enough so that Andrew can look it over and give a yea/nay decision. Jeremy. (This used to be commit db96f83e34a139f47776fcbb5c1624fbf9d9943b)
2000-04-11include/byteorder.h: ALIGN4/ALIGN2 macros.Jeremy Allison1-3/+3
include/includes.h: Added SMB_BIG_UINT_BITS. lib/util.c: Removed align2/align4 - use macros. libsmb/namequery.c: Use ALIGN2. locking/locking.c: Replace do_lock, do_unlock, args with SMB_BIG_UINT, not SMB_OFF_T. Needed to move to hiding POSIX locks at a lower layer. nmbd/nmbd_processlogon.c: Use ALIGN2/ALIGN4 macros. smbd/blocking.c: Replace do_lock, do_unlock, args with SMB_BIG_UINT, not SMB_OFF_T. smbd/reply.c: Replace do_lock, do_unlock, args with SMB_BIG_UINT, not SMB_OFF_T. Jeremy. (This used to be commit 491eea8a20bf80d426625479326211dc975857a6)
2000-04-10the first of a bunch of changes to code with getting rid of the fd_ptrAndrew Tridgell1-6/+23
element in the fsp pretty mechanical stuff, but it affects lots of files. (This used to be commit 368b0bc1b122ece18d11854c1506517816a01a82)
2000-02-07Fixed compile warning in locking.c:traverse_fn()Tim Potter1-1/+2
(This used to be commit eefc8972217e5a700b90f13ab040a0919f184d23)
2000-02-041) added void* state argument to tdb_traverse. guess what! there wereLuke Leighton1-5/+5
two places i found where it was appropriate to _use_ that third argument, in locking.c and brlock.c! there was a static traverse_function and i removed the static variable, typecast it to a void*, passed it to tdb_traverse and re-cast it back to the traverse_function inside the tdb_traverse function. this makes the use of tdb_traverse() reentrant, which is never going to happen, i know, i just don't like to see statics lying about when there's no need for them. as i had to do in samba-tng, all uses of tdb_traverse modified to take the new void* state argument. 2) disabled rpcclient: referring people to use SAMBA_TNG rpcclient. i don't know how the other samba team members would react if i deleted rpcclient from cvs main. damn, that code's so old, it's unreal. 20 rpcclient commands, instead of about 70 in SAMBA_TNG. (This used to be commit 49d7f0afbc1c5425d53019e234d54ddf205c8e9a)
2000-01-16added code to allow traversal of the byte range lock databaseAndrew Tridgell1-1/+1
this is used with "smbstatus -B" to dump the lock list (This used to be commit 5f022629146701e6d543f77007dc944e4277ab0c)
2000-01-14damn, Solaris already has a "enum lock_type"Andrew Tridgell1-2/+2
changed it to "enum brl_type" (This used to be commit 6b9ee7662c7afa70f6b20889e6b0ae1dcd677f9f)
2000-01-14we now pass all byte range locking testsAndrew Tridgell1-2/+15
the last piece was to use a smb timeout slightly larger than the locking timeout in bloking locks to prevent a race (This used to be commit 1b54cb4a33a65e62c2e3189b78ef073869a60c75)
2000-01-14some more work on the byte range lockingAndrew Tridgell1-6/+8
note the ugly global_smbpid - I hope that won't bethere for long, I just didn't want to do two lots of major surgery at the one time. Using global_smbpid avoids the big change of getting rid of our inbuf/outbuf interface to reply routines. I'll do that once the locking stuff passes all tests. (This used to be commit f8bebf91abcaa5bda3ec8701f9242f220da8943a)
2000-01-13the bulk of the new byte range locking coodeAndrew Tridgell1-45/+21
it doesn't map to posix locks yet, that will come later. (This used to be commit 7f2a493095887cb0aae915ac36b9cded71d3a7a7)
2000-01-03added the unexpected packet database (unexpected.tdb)Andrew Tridgell1-1/+1
this means "nmblookup -S" now always works, even with broken servers the database stores all unexpected replies and these can be accessed by any client. while doing this I cleaned up a couple of functions, and put in place a better trn_id generator. in most places the code got quite a bit simpler due to the addition of simple helper functions. I haven't yet put the code in to take advantage of this for pdc replies - that will be next. Jeremys pdc finding code will then work :) (This used to be commit 280e6359d36c9bc8dcded302f15c3a1db8e3feeb)
2000-01-02- added tdb_flags option to tdb_open()Andrew Tridgell1-1/+1
- added TDB_CLEAR_IF_FIRST flag to clear the database if this is the first attached process. Useful for non-persistent databases like our locking area (this will also make upgrades to new database layouts easier) - use lock_path() in a couple of places - leave connections database open while smbd running - cleaned up some tdb code a little, using macros for constants (This used to be commit 00e9da3ca577527db392aced62f02c69cfee8f4f)
1999-12-22when no shares are returned the *shares pointer must be set to nullAndrew Tridgell1-0/+2
(This used to be commit 84fe2337c701a52c6dc5cd8c1f6e9050478703f1)
1999-12-21converted all our existing shared memory code to use a tdb databaseAndrew Tridgell1-128/+295
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 Tridgell1-22/+62
(This used to be commit 453a822a76780063dff23526c35408866d0c0154)
1999-04-04Use VFS operations for file I/O.Tim Potter1-4/+5
(This used to be commit 20bfa71c951a6e6018aafbd43946d1e0669feacb)
1998-10-31don't core dump in smbstatus if we can't open the shmem systemAndrew Tridgell1-0/+1
(This used to be commit ef9749798ab72a5e26f9cb5d0904266d6df70f8c)
1998-10-23Reasonably large change to give us *exactly* correct NT delete on close ↵Jeremy Allison1-2/+43
semantics. This was trickier than it looks :-). Check out the new DELETE_ON_CLOSE flag in the share modes and the new code that iterates through all open files on the same device and inode in files.c and trans2.c Also changed the code that modifies share mode entries to take generic function pointers rather than doing a specific thing so this sort of change should be easier in the future. Jeremy. (This used to be commit 5e6a7cd99d29d1cf068fc517272559c1cf47ea3a)
1998-09-05ahh, the joy of deleting large chunks of code that someone else hasAndrew Tridgell1-10/+0
painstakingly put in :) This gets rid of most of the #ifdef LARGE_SMB_INO_T ifdefs around DEBUG() statements. We just use %.0f in all cases. Makes the code a bit easier to read :) (This used to be commit 41f0069afc02169932e04ff0039bb6328eaaf04d)
1998-09-04More 64 bit stuff - now the fcntl locks are 64 bit clean.Jeremy Allison1-16/+25
Nearly at the stage where I can expose the 64-bit-ness to the NT clients.... Jeremy. (This used to be commit 422f1dd45074c0e28203aca5952e57bbe56676b6)
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