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Ensure we don't use any of the create_options for Samba private
use. Add a new parameter to the VFS_CREATE call (private_flags)
which is only used internally. Renumber NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
and NTCREATEX_OPTIONS_PRIVATE_DENY_FCB to match the S4 code).
Rev. the VFS interface to version 28.
Jeremy.
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In a cluster, this makes a large difference: For r/w traverse, we have to do a
fetch_locked on every record which for most users of connections_forall is just
overkill.
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Jeremy.
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Jeremy.
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Ensure we don't call close_cnum() with SMB2, also talloc_move the
compat_conn pointer from the NULL context onto the tcon context
in SMB2 as it's conceptually owned by that pointer.
Jeremy.
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and then return to the client the number of credits per operation
that they asked for. This is a more sensible algorithm than just
blindly returning "20" on every reply, although we will probably
still need more changes to this going forward.
Jeremy.
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value(s) error when "mangling method = hash"
The charset array allocated in init_chartest() is allocated
by MALLOC, but only some elements of it being set after allocation. Fix is to
memset to zero after allocation.
Jeremy.
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containing a '.'
Fix use of uninitialized variable. This can lead to crashes if
mangling = hash processes names with no '.'.
Jeremy.
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Re-arrange the operations order so SMB_VFS_CONNECT is done
first as root (to allow modules to correctly initialize themselves).
Reviewed modules to check if they needed CONNECT invoked as
a user (which we previously did) and it turns out any of them
that cared needed root permissions anyway.
Jeremy.
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To provide the user with the same SID when doing Kerberos logins, attempt to do
a make_server_info_sam instead of a make_server_info_pw.
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and 0 in the places where it does.
Jeremy
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behavior.
Cause all exit paths to go through one place, where all cleanup is
done. change_to_root_user() for pathname operations that should succeed if
the path exists, even if the connecting user has no access.
For example, a share can now be defined with a path of /root/only/access
(where /root/only/access is a directory path with all components only
accessible to root e.g. root owned, permissions 700 on every component).
Non-root users will now correctly connect, but get ACCESS_DENIED on
all activities (which matches Windows behavior). Previously, non-root
users would get NT_STATUS_BAD_NETWORK_NAME on doing a TConX to this
share, even though it's a perfectly valid share path (just not accessible
to them).
This change was inspired by the research I did for bug #7126, which
was reported by bepi@adria.it.
As this is a change in a core function, I'm proposing to leave
this only in master for 3.6.0, not back-port to any existing releases.
This should give us enough time to decide if this is the way we want this to
behave (as Windows) or if we prefer the previous behavior.
Jeremy.
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The "lock spin time" parameter mimics the following Windows
setting which by default is 250ms in Windows and 200ms in Samba.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\LockViolationDelay
When a client sends repeated, non-blocking, contending BRL requests
to a Windows server, after the first Windows starts treating these
requests as timed blocking locks with the above timeout.
As an efficiency, I've changed the behavior when this setting is 0,
to skip this logic and treat all requests as non-blocking locks.
This gives the smbd server behavior similar to the 3.0 release with
the do_spin_lock() implementation.
I've also changed the blocking lock parameter in the call from
push_blocking_lock_request() to true as all requests made in this
path are blocking by definition.
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This hasn't been turned on or been capable of doing so for
many years now. Makes this jumbo function smaller...
Jeremy.
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NT_STATUS_OBJECT_PATH_INVALID error"
This reverts commit 2fdd8b10c6abadd27c579e772c0482214d2363a5.
This fix is incorrect. The original code works as desired,
I made a mistake here.
Jeremy.
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NT_STATUS_OBJECT_PATH_INVALID error
As tridge's comment says, we should be ignoring ACCESS_DENIED
on the share path in a TconX call, instead allowing the mount
and having individual SMB calls fail (as Windows does). The
original code erroneously caught SMB_VFS_STAT != 0 and errored
out on that.
Jeremy.
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Jeremy.
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Volker.
Create widelinks_warning(int snum) to cover the message needed in make_connection.
Jeremy.
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are incompatible.
Volker pointed out that the preexec scripts get passed the conn->connectpath
as a parameter, so call canonicalize_connect_path() both *before* and after
the preexec scripts. Ignore errors on the call before the preexec scripts,
as the path may not exist until created by the preexec scripts.
Jeremy.
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This way we avoid any chance that a configuration reload may turn
back on wide links when unix extensions are enabled.
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extensions" are incompatible.
Make sure we match the previous allow widelinks behavior, in that
non-root preexec scripts can create share directories for a share
definition.
Jeremy
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incompatible.
Bug reported by Ralf Zimmermann <r.zimmermann@siegnetz.de>. Reproduced by jra.
If the target directory of a share doesn't exist, but is designed to
be created by a "root preexec" script call, then the widelinks check
is done too early - thus preventing the user from connecting to the
share.
Fix is to re-arrange the order of checks in make_connection_snum()
to always do the following order of operations:
(1). Turn off wide links if unix extensions = yes.
(2). Call any root preexec scripts.
(3). Canonicalize the share path to remove any symlinks (ie. end
up with the realpath in the connection_struct).
Jeremy.
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(cherry picked from commit 365b408c458c848a818637d9b36a0423aeb1ba54)
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values in subsequent SMBtrans replies)
There are two problems:
1). The server is off-by-one in the end of buffer space test.
2). The server returns 0 in the totaldata (smb_vwv1) and totalparams (smb_vwv0)
fields in the second and subsequent SMBtrans replies.
This patch fixes both.
Jeremy.
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metze
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A comparison function for qsort needs to return an 'int'!
Otherwise you'll get random results depending on the compiler
and the architecture...
metze
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This is needed to support large browse lists.
metze
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metze
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metze
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Jeremy.
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On unclean shutdown we can end up with stale entries in the brlock,
connections and locking db. Previously we would do the cleanup on
every unclean exit, but that can cause smbd to be completely
unavailable for several minutes when a large number of child smbd
processes exit.
This adds a rate limited cleanup of the databases, with the default
that cleanup happens at most every 20s
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These have been replaced with the min timeout in blocking.c
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When we are waiting on a pending byte range lock, another smbd might
exit uncleanly, and therefore not notify us of the removal of the
lock, and thus not trigger the lock to be retried.
We coped with this up to now by adding a message_send_all() in the
SIGCHLD and cluster reconfigure handlers to send a MSG_SMB_UNLOCK to
all smbd processes. That would generate O(N^2) work when a large
number of clients disconnected at once (such as on a network outage),
which could leave the whole system unusable for a very long time (many
minutes, or even longer).
By adding a minimum re-check time for pending byte range locks we
avoid this problem by ensuring that pending locks are retried at a
more regular interval.
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Jeremy.
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Change parameter "wide links" to default to "no".
Ensure "wide links = no" if "unix extensions = yes" on a share.
Fix man pages to refect this.
Remove "within share" checks for a UNIX symlink set - even if
widelinks = no. The server will not follow that link anyway.
Correct DEBUG message in check_reduced_name() to add missing "\n"
so it's really clear when a path is being denied as it's outside
the enclosing share path.
Jeremy.
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Jeremy.
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new create time code.
Remove erroneous optimisation that caused no EA to be set
if calculated btime matched st_ex btime, and calculated DOS
attribute matched existing file attribute.
Jeremy.
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when logged as root.. Doh !
Jeremy.
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conn->server_info->utok.uid == 0
isn't the correct check to see if we're root anymore. As rpc_samr_nt.c does,
the correct check is :
geteuid() == sec_initial_uid()
Jeremy.
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The destname malloc size was not taking into account the 1 extra byte
needed if a string without a leading '/' was passed in and that slash
was added.
This would cause the '\0' byte to be written past the end of the
malloced destname string and corrupt whatever heap memory was there.
This problem would be hit if a share name was given in smb.conf without
a leading '/' and if it was the exact size of the allocated STRDUP memory
which in some implementations of malloc is a power of 2.
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respond to a read or write.
Only works on Linux kernels 2.6.26 and above. Grants CAP_KILL capability
to allow Linux threads under different euids to send signals to each other.
Jeremy.
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Jeremy.
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