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Nobody used this (except vfs_gpfs, which did not need it really). If
you *really* need this, you can always look in locking.tdb, but this
should never happen in any hot code path, as no runtime decisions are
made on the share access after the open is done.
Bump VFS interface number to 42.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Also the smb.conf options should only be checked once and a reload of
the config should not switch to a different locking mode.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Feb 9 03:43:50 CET 2019 on sn-devel-144
Replace with a call to files_forall. Why? I just came across this
function that only has one pretty obscure user. This does not justify
a full library function, IMHO at least.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Based on a suggestion from <lev@zadarastorage.com>
https://bugzilla.samba.org/show_bug.cgi?id=12818
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <realrichardsharpe@gmail.com>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jun 22 00:12:49 CEST 2017 on sn-devel-144
Okay, this is similar to full_path_tos, but with variable arrays now and much
simpler :-)
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Get it from parent/deriving smb_filename if present.
Use 0 (as usually this a Windows-style lookup) if
not.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Some instrumentation of the the durable reconnect
code uncovered a problem in the fsp_new, fsp_free pair:
vfs_default_durable_reconnect():
fsp_new() ==> this does DLIST_ADD(fsp->conn->sconn->files, fsp)
if (fsp->oplock_type == LEASE_OPLOCK) {
find_fsp_lease(fsp, &key, l) ==> this fills conn->fsp_fi_cache
if (client guids not equal) {
fsp_free(fsp) ==> this does DLIST_REMOVE(fsp->conn->sconn->files, fsp)
}
so after this code we have the fsp_fi_cache still pointing to the
free'd memory. The next call to find_fsp_lease will use the cache
and hence access the freed memory.
The fix consists in invalidating the cache in fsp_free() instead
of just in its wrapper file_free().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11799
Pair-Programmed-With: Guenther Deschner <gd@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Mar 17 04:31:10 CET 2016 on sn-devel-144
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
These convert the oplock state into SMB2_LEASE_ flags.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This causes deadlocks which cause smbd to crash if the locking
database has already been locked for a compound operation we
need to be atomic (as in the file rename case).
Ensure INTERNAL_OPEN_ONLY opens are synonymous with req==NULL.
INTERNAL_OPEN_ONLY opens leave a NO_OPLOCK record in
the share mode database, so they can be detected by other
processes for share mode violation purposes (because
they're doing an operation on the file that may include
reads or writes they need to have real state inside the
locking database) but have an fnum of FNUM_FIELD_INVALID
and a local share_file_id of zero, as they will never be
seen on the wire.
Ensure validate_my_share_entries() ignores
INTERNAL_OPEN_ONLY records (share_file_id == 0).
Bug 10564 - Lock order violation and file lost
https://bugzilla.samba.org/show_bug.cgi?id=10564
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
We use this in other places too and it's better than a hardcoded value.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Yes, this looks like a hack, but talloc_asprintf does show up high in
profiles called from these routines
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
FAKE_LEVEL_II_OPLOCK was an indicator to break level2 oplock holders
on write. This information is now being held in brlock.tdb, which makes
the FAKE_LEVEL_II_OPLOCK type unnecessary.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This makes sure we generate unique persistent file ids,
which are stored in smbXsrv_open_global.tdb.
Pair-Programmed-With: Michael Adam <obnox@samba.org>
metze
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jun 29 21:01:11 CEST 2012 on sn-devel-104
It seems to be important to have unique persistent file ids,
because windows clients seem to index files by server_guid + persistent_file_id.
Which may break, if we just have a 16-bit range per connection
and the client connects multiple times.
Based on code from Ira Cooper. Use fsp->fh->gen_id as the persistent
fileid in SMB2.
metze
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Jun 14 22:04:13 CEST 2012 on sn-devel-104
This calculates a 64-bit value that most likely uniquely identifies
the files_struct globally to the server.
* 32-bit random gen_id
* 16-bit truncated open_time
* 16-bit fnum (valatile_id)
Based on code from Ira Cooper. Use fsp->fh->gen_id as the persistent
fileid in SMB2.
Pair-Programmed-With: Michael Adam <obnox@samba.org>
metze
This makes sure the value is never 0, it's between 1 and UINT32_MAX.
While fsp->fh->gen_id is 'unsigned long' currently (which might by 8 bytes),
there's some oplock code which truncates it to uint32_t (using IVAL()).
Which means we could reuse fsp->fh->gen_id as persistent file id
until we have a final fix, which uses database.
See bug #8995 for more details.
Based on code from Ira Cooper. Ensure fsp->fh->gen_id starts from
a random point. We will use this as the SMB2 persistent_id.
metze
This reverts commit c2716a7d5ccf78f9716b703c22e6cf4d4f179656.
This is not needed anymore, as we have file_fsp_smb2() now.
metze
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Sun Jun 10 18:04:21 CEST 2012 on sn-devel-104
Jeremy, I know you like it explicit, but I stumbled across this
explicit TALLOC_FREE and asked myself about a potentially wrong
talloc hierarchy.
Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Thu Apr 26 23:00:03 CEST 2012 on sn-devel-104
From notify_internal.c:
/*
* The notify database is split up into two databases: One
* relatively static index db and the real notify db with the
* volatile entries.
*/
This change is necessary to make notify scale better in a cluster
We've just talloc_asprintf'ed the fullpath, so talloc_get_size knows the
strlen.
Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Tue Apr 10 13:20:22 CEST 2012 on sn-devel-104
The performance of these is minimal (these days) and they can return
invalid results when used as part of applications that do not use
sys_fork().
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Mar 24 21:55:41 CET 2012 on sn-devel-104
We only need one notify_ctx per smbd. The notify_array can become quite large.
It's based on absolute paths, so there's no point in having a copy of the
complete array in memory multiple times.
Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Wed Mar 21 14:26:07 CET 2012 on sn-devel-104
The plan is to have files_struct as some kind of low level
abstraction for a smb1/smb2 opens, that can be used by SMB_VFS modules.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Tue Mar 6 23:04:01 CET 2012 on sn-devel-104
This will reduce the noise from merges of the rest of the
libcli/security code, without this commit changing what code
is actually used.
This includes (along with other security headers) dom_sid.h and
security_token.h
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue Oct 12 05:54:10 UTC 2010 on sn-devel-104
Recently code was added to match windows semantics of denying the
rename of a directory if there are open files underneath it. This
does partly match windows semantics, but it turns out the rename
should be allowed if the open file handle is for the directory being
renamed, or for a stream on the directory being renamed. This patch
refines the check to better follow these rename semantics.
This optimizes non-recursive notifys. For non-recursive notifies we can use a
per-directory file-id indexed notify record. This matters for the Windows
Explorer and IIS cases which do not use recursive notifies. In these cases, we
do not have to shuffle around the whole notify record on every change.
For the cluster case, this improves correctness of the notifies, ctdb only
distributes the tdb seqnum once a second, so we can lose notifies.
Restructures parts of open code so that fsp must be allocated before calling
open_file_ntcreate(_internal). Also fix up file ref-counting inside files.c.
Jeremy.
This was my fault. I use a singleton cache (positive and negative) to speed up pathname based qfileinfo/setfileinfo lookups for alternate fsp's open on the same path. I only invalidated the negative cache on adding a new file fsp, as I incorrectly imagined the new fsp was put at the *end* of the open files list. DLIST_ADD puts it at the start, meaning any subsequent open wasn't seen once the cache was set. Doh !
Jeremy.
being (correctly) used in the can_read/can_write checks for hide unreadable/unwritable
and this is more properly done using the functions in smbd/file_access.c.
Preparing to do NT access checks on all file access.
Jeremy.
(This used to be commit 6bfb06ad95)
We now never call file_ntimes() directly, every update
is done via smb_set_file_time().
This let samba3 pass the BASE-DELAYWRITE test.
The write time is only updated 2 seconds after the
first write() on any open handle to the current time
(not the time of the first write).
Each handle which had write requests updates the write
time to the current time on close().
If the write time is set explicit via setfileinfo or setpathinfo
the write time is visible directly and a following close
on the same handle doesn't update the write time.
metze
(This used to be commit 2eab212ea2)
This replaces the internal explicit dev/ino file id representation by a
"struct file_id". This is necessary as cluster file systems and NFS
don't necessarily assign the same device number to the shared file
system. With this structure in place we can now easily add different
schemes to map a file to a unique 64-bit device node.
Jeremy, you might note that I did not change the external interface of
smb_share_modes.c.
Volker
(This used to be commit 9b10dbbd5d)
for utimes - change the call to ntimes. This preserves
nsec timestamps we get from stat (if the system supports
it) and only maps back down to usec or sec resolution
on time set. Looks bigger than it is as I had to move
lots of internal code from using time_t and struct utimebuf
to struct timespec.
Jeremy.
(This used to be commit 8f3d530c5a)
first of the raw-notify subtests, the one-level test_notify_dir without any
flags around yet.
The tricky part was getting the data structures right, I hope the next tests
don't let that fall over.
fsp->notify is now by default NULL, meaning that nobody has issued a
changenotify call. This means nobody is interested in changes for this
directory.
If that has happened, notify_change_buf collects the changes if no current
request is outstanding, and it collects the requests if no change has happened
since the last request.
Happy New Year, somewhere on this planet it's already 2007 :-)
Volker
P.S: Jeremy, there's a question for you in smbd/files.c line 367.
(This used to be commit ce0ad24988)
Checking in because Jeremy was bugging me. Potentially this becomes quite
intrusive, I'm not sure if I should open a temporary branch for this.
Jeremy, Jerry, do you think 3_0 is the right place for this?
Volker
(This used to be commit bcf5c751cb)
fsp pointers. Ensure we cope with this to pass Samba4
DENY tests (we used to pass these, there must have been
a regression with newer code). We now pass them.
Jeremy
(This used to be commit fd6fa1d4ea)
by saving the UNIX token used to set a delete on close flag,
and using it when doing the delete. libsmbsharemodes.so still
needs updating to cope with this change.
Samba4 torture tests to follow.
Jeremy.
(This used to be commit 23f16cbc2e)
* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
(This used to be commit 939c3cb5d7)
tests on this as it's very late NY time (just wanted to get this work
into the tree). I'll test this over the weekend....
Jerry - in looking at the difference between the two trees there
seem to be some printing/ntprinting.c and registry changes we might
want to examine to try keep in sync.
Jeremy.
(This used to be commit c7fe18761e)
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f)
1. Allows to change quota settings for shared mount points from Win2K and WinXP from Explorer properties tab
2. Disabled by default and when requested, will be probed and enabled only on Linux where it works
3. Was tested for approx. two weeks now on Linux by two independent QA teams, have not found any bugs so far
Documentation to follow
(This used to be commit 4bf022ce9e)
configure.in:
include/config.h.in:
include/profile.h:
smbd/vfs-wrap.c:
smbd/vfs.c:
Added fchmod and fchown to VFS (sorry Gerald - but we needed them anyway).
smbd/dosmode.c:
smbd/files.c:
printing/printfsp.c:
smbd/close.c:
smbd/open.c:
Fixed "dos filemode" correctly so there are no race conditions. Forces test
of open of file O_WRONLY before allowing fchmod as root. Afterwards, calls
standard close function that preserves POSIX locks due to POSIX-me-harder
braindamage. :-). Andrew please review this code.
Also - in removing the tmpdir param in smbrun an extra NULL parameter
was missed in each print_run_command() call (which is a varargs fn.).
Now fixed.
Jeremy.
(This used to be commit 32397e5bc6)
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 92109d7b3c)
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 389b700a26)
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 ab0ecc39d6)
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 d1827a3648)
Synopsis: change every disk access function to work through a vfs_ops
structure contained in the connection_struct.
(This used to be commit 3aad500c0f)
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 5e6a7cd99d)
Sets up the files array correctly - limited by the smb.conf parameter
and by the max fd's per process as found by getrlimit().
Jeremy.
(This used to be commit eca24bd243)
on a machine that supports them in autoconf.
Move various functions out of lib/util.c into smbd/process.c
and smbd/oplock.c where they belong.
Jeremy.
(This used to be commit c3c5e13f85)
files.c: Removed fd bitmap - not needed. Added code to do use arrays rather
than linked list - disabled by default but can be enabled to check
performance.
Jeremy.
(This used to be commit 069efc0454)
prompted by the interpret_security() dead code that Jean-Francois
pointed out I added a make target "finddead" that finds potentially
dead (ie. unused) code. It spat out 304 function names ...
I went through these are deleted many of them, making others static
(finddead also reports functions that are used only in the local
file).
in doing this I have almost certainly deleted some useful code. I may
have even prevented compilation with some compile options. I
apologise. I decided it was better to get rid of this code now and add
back the one or two functions that are needed than to keep all this
baggage.
So, if I have done a bit too much "destroying" then let me know. Keep
the swearing to a minimum :)
One bit I didn't do is the ubibt code. Chris, can you look at that?
Heaps of unused functions there. Can they be made static?
(This used to be commit 2204475c87)
to oplock break message passing). I think that smbd/nmbd are now
inode and offset size independent (at least for 32 bit and 64 bit
systems).
Now to expose all this new functionality to NT clients.....
Jeremy.
(This used to be commit 5910d07bbf)
bit file interface for the NT SMB's.
Created a new define, SMB_STRUCT_STAT that currently is
defined to be struct stat - this wil change to a user
defined type containing 64 bit info when the correct
wrappers are written for 64 bit stat(), fstat() and lstat()
calls.
Also changed all sys_xxxx() calls that were previously just
wrappers to the same call prefixed by a dos_to_unix() call
into dos_xxxx() calls. This makes it explicit when a pathname
translation is being done, and when it is not.
Now, all sys_xxx() calls are meant to be wrappers to mask
OS differences, and not silently converting filenames on
the fly.
Jeremy.
(This used to be commit 28aa182dbf)
include/smb.h: Moved old typedefs of uint8 etc. into include/includes.h where
all the other defines live (changed them from typedefs to
defines).
Other changes : changed from using uint32 to SMB_DEV_T and SMB_INO_T
in preparation for moving to size independed (ie. 64 bit clean) device
and inode access. Stat call wrapper comes next :-).
Jeremy.
(This used to be commit 3d9ec96de5)
the head of an SMB request (ie. are part of a chain) will not be queued -
this will be fixed when we move to the new chain code. In practice, this
doesn't seem to cause much of a problem (in my admittedly limited testing)
bug a debug level zero message will be placed in the log when this
happens to help determine how real the problem is.
smbd/locking.c: New debug messages.
smbd/blocking.c: New blocking code - handles SMBlock, SMBlockread and SMBlockingX
smbd/chgpasswd.c: Fix for master fd leak.
smbd/files.c: Tidyup comment.
smbd/nttrans.c: Added fnum to debug message.
smbd/process.c: Made chain_reply() use construct_reply_common(). Added blocking
lock queue processing into idle loop.
smbd/reply.c: Added queue pushes for SMBlock, SMBlockread and SMBlockingX.
Jeremy.
(This used to be commit e1dd03ecda)
very large. files.c now promotes a files_struct to the top of the list
if it is used when it is more than 10 elements from the top.
also moved common linked list code for the 5 sets of linked lists that
I've created over the past few days into dlinklist.h (I've explained
to Chris why I didn't use the ubiqx code)
(This used to be commit 1eb9ae2996)
the chain pointer is now stored as a static and is set whenever a
handle is created or extracted. This also makes the code less error
prone.
(This used to be commit 068a862982)
removed most cases where a pnum is used and substituted a pipes_struct*.
in files.c I added a offset of 0x1000 to all file handles on the
wire. This makes it much less likely that bad parsing will give us the
wrong field.
(This used to be commit 8bc2627ff2)
- handle null fsp in DEBUG() at end of reply_ntcreate_and_X(). Jeremy,
can you fix this properly?
- get snum right in print queue code in ipc.c (it was broken by my
connections_struct changes).
(This used to be commit b3dd378575)
private to files.c)
It now is a doubly linked list with a bitmap for allocated file
numbers. Similarly for the fd_ptr code. I also changed the default
maximum number of open files to 4096. The static cost is 1 bit per
file.
It all seems to work, and it passes the "does Sue scream" test, but if
you see weird behaviour then please investigate. With the volume of
new code that has gone in there are bound to be one or two bugs
lurking.
note that you must do a "make clean" before building this as many data
structures have changed in size.
(This used to be commit 79755ce970)
