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Since commit eada8f8a, updates to the cups pcap cache are performed
asynchronously - cups_cache_reload() forks a child process to request
cups printer information and notify the parent smbd on completion.
Currently printer shares are reloaded immediately following the call to
cups_cache_reload(), this occurs prior to smbd receiving new cups pcap
information from the child process. Such behaviour can result in stale
print shares as outlined in bug 7836.
This fix ensures print shares are only reloaded after new pcap data has
been received.
Pair-Programmed-With: Lars Müller <lars@samba.org>
The tdb traverse function returns the number of elements traversed, or
less than zero on error, printer_list_traverse() is incorrectly checking
for non-zero return.
Autobuild-User: Andreas Schneider <asn@samba.org>
Autobuild-Date: Mon Dec 20 18:44:41 CET 2010 on sn-devel-104
Not needed - privileges code prevents "enable privileges = no" from adding privileges
anyway.
This reverts commit a8b95686a7.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Oct 22 23:41:36 UTC 2010 on sn-devel-104
to maintain compatibility with smb.conf manpage.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Oct 22 18:15:48 UTC 2010 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
It is not universally guaranteed that an enum is represented as a uint32_t.
This starts to be THE BUG (tm) in Samba. What can I do to explain this
to people a bit better? It seems that the verbose explanations I put into
the recent checkins fixing similar bugs are not clear enough.
Anybody who does is not 100% clear about what this patch fixes please
contact me directly so that we can talk it through on the phone to agree
on a wording that everybody can understand.
Thanks,
Volker
TDB_CLEAR_IF_FIRST tdb's. For tdb's like gencache where we open
without CLEAR_IF_FIRST and then with CLEAR_IF_FIRST if corrupt
this is still safe to use as if opening an existing tdb the new
hash will be ignored - it's only used on creating a new tdb not
opening an old one.
Jeremy.
This does a length-limited check, and so avoids reading beyond the
allocated memory if the server sends less than 16 bytes.
Andrew Bartlett
Signed-off-by: Günther Deschner <gd@samba.org>
This new call is available in the merged privileges code, and
takes an enum as the parameter, rather than a bitmask.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The printers database may be completely missing in a new install, and
we may have SECDESC entries for printers that have been removed. Don't
consider these fatal errors in the migration.
Signed-off-by: Günther Deschner <gd@samba.org>
Explicitly return ntstatus errors instead of relying on elusive errno.
Split the function to make it easier to follow.
Signed-off-by: Jim McDonough <jmcd@samba.org>
This matches the structure that new code is being written to,
and removes one more of the old-style named structures, and
the need to know that is is just an alias for struct dom_sid.
Andrew Bartlett
Signed-off-by: Günther Deschner <gd@samba.org>
This was a hack that required a special client from HP.
The client code has never been released and was discontinued,
so this code was just dead weight.
Signed-off-by: Günther Deschner <gd@samba.org>
This shrinks include/includes.h.gch by the size of 7 MB and reduces build time
as follows:
ccache build w/o patch
real 4m21.529s
ccache build with patch
real 3m6.402s
pch build w/o patch
real 4m26.318s
pch build with patch
real 3m6.932s
Guenther
Based on a patch from Michael Karcher <samba@mkarcher.dialup.fu-berlin.de>.
I think this is the correct fix. It causes cups_job_submit to use
print_parse_jobid(), which I've moved into printing/lpq_parse.c (to allow the
link to work).
It turns out the old print_parse_jobid() was *broken*, in that the pjob
filename was set as an absolute path - not relative to the sharename (due to it
not going through the VFS calls).
This meant that the original code doing a strncmp on the first part of the
filename would always fail - it starts with a "/", not the relative pathname of
PRINT_SPOOL_PREFIX ("smbprn.").
This fix could fix some other mysterious printing bugs - probably the ones
Guenther noticed where job control fails on non-cups backends.
Guenther PLEASE CHECK !
Jeremy.
When a samba server process dies hard, it has no chance to clean up its entries
in locking.tdb, brlock.tdb, connections.tdb and sessionid.tdb.
For locking.tdb and brlock.tdb Samba is robust by checking every time we read
an entry from the database if the corresponding process still exists. If it
does not exist anymore, the entry is deleted. This is not 100% failsafe though:
On systems with a limited PID space there is a non-zero chance that between the
smbd's death and the fresh access, the PID is recycled by another long-running
process. This renders all files that had been locked by the killed smbd
potentially unusable until the new process also dies.
This patch is supposed to fix the problem the following way: Every process ID
in every database is augmented by a random 64-bit number that is stored in a
serverid.tdb. Whenever we need to check if a process still exists we know its
PID and the 64-bit number. We look up the PID in serverid.tdb and compare the
64-bit number. If it's the same, the process still is a valid smbd holding the
lock. If it is different, a new smbd has taken over.
I believe this is safe against an smbd that has died hard and the PID has been
taken over by a non-samba process. This process would not have registered
itself with a fresh 64-bit number in serverid.tdb, so the old one still exists
in serverid.tdb. We protect against this case by the parent smbd taking care of
deregistering PIDs from serverid.tdb and the fact that serverid.tdb is
CLEAR_IF_FIRST.
CLEAR_IF_FIRST does not work in a cluster, so the automatic cleanup does not
work when all smbds are restarted. For this, "net serverid wipe" has to be run
before smbd starts up. As a convenience, "net serverid wipedbs" also cleans up
sessionid.tdb and connections.tdb.
While there, this also cleans up overloading connections.tdb with all the
process entries just for messaging_send_all().
Volker
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.
in the "user.DOSATTRIB" EA. From the docs:
In Samba 3.5.0 and above the "user.DOSATTRIB" extended attribute has been extended to store
the create time for a file as well as the DOS attributes. This is done in a backwards compatible
way so files created by Samba 3.5.0 and above can still have the DOS attribute read from this
extended attribute by earlier versions of Samba, but they will not be able to read the create
time stored there. Storing the create time separately from the normal filesystem meta-data
allows Samba to faithfully reproduce NTFS semantics on top of a POSIX filesystem.
Passes make test but will need more testing.
Jeremy.
This patch also changes the unix convert flags to make sure the
correct semantics are preservered for allowing/disallowing wildcards
in the last component of the path.
Before 3.3, an smbcontrol debug message sent to the target "smbd" would
actually be sent to all running processes including nmbd and winbindd.
This behavior was changed in 3.3 so that the "smbd" target would only
send a message to the process found in smbd.pid, while the "all" target
would send a message to all processes.
The ability to set the debug level of all processes within a single
daemon, without specifying each pid is quite useful. This was implemented
in winbindd in 065760ed. This patch does the same thing for smbd.
Upon receiving a MSG_DEBUG the parent smbd will rebroadcast it to all of
its children.
The printing process has been added to the list of smbd child processes,
and we now always track the number of smbd children regardless of the
"max smbd processes" setting.
Some of the callers required minimal changes, while others
(copy_internals) required significant changes. The task is simplified
a little bit because we are able to do operations and checks on the
base_name when a stream isn't used.
This patch should cause no functional changes.
Volker, Jeremy: Please check
Not only are these unnecessary in spirit because unlink_internals
calls unix_convert, but in practice the return value is simply being
ignored right now.
When we run out of file descriptors for some reason, every new
connection forks a child that immediately panics causing smbd to
coredump. This seems unnecessarily harsh; with this code change we
now catch that error and merely log a message about it and exit
without the core dump.
Signed-off-by: Tim Prouty <tprouty@samba.org>
This patch introduces
struct stat_ex {
dev_t st_ex_dev;
ino_t st_ex_ino;
mode_t st_ex_mode;
nlink_t st_ex_nlink;
uid_t st_ex_uid;
gid_t st_ex_gid;
dev_t st_ex_rdev;
off_t st_ex_size;
struct timespec st_ex_atime;
struct timespec st_ex_mtime;
struct timespec st_ex_ctime;
struct timespec st_ex_btime; /* birthtime */
blksize_t st_ex_blksize;
blkcnt_t st_ex_blocks;
};
typedef struct stat_ex SMB_STRUCT_STAT;
It is really large because due to the friendly libc headers playing macro
tricks with fields like st_ino, so I renamed them to st_ex_xxx.
Why this change? To support birthtime, we already have quite a few #ifdef's at
places where it does not really belong. With a stat struct that we control, we
can consolidate the nanosecond timestamps and the birthtime deep in the VFS
stat calls.
At this moment it is triggered by a request to support the birthtime field for
GPFS. GPFS does not extend the system level struct stat, but instead has a
separate call that gets us the additional information beyond posix. Without
being able to do that within the VFS stat calls, that support would have to be
scattered around the main smbd code.
It will very likely break all the onefs modules, but I think the changes will
be reasonably easy to do.
This is the first of a series of patches that change path based
operations to operate on a struct smb_filename instead of a char *.
This same concept already exists in source4.
My goals for this series of patches are to eventually:
1) Solve the stream vs. posix filename that contains a colon ambiguity
that currently exists.
2) Make unix_convert the only function that parses the stream name.
3) Clean up the unix_convert API.
4) Change all path based vfs operation to take a struct smb_filename.
5) Make is_ntfs_stream_name() a constant operation that can simply
check the state of struct smb_filename rather than re-parse the
filename.
6) Eliminate the need for split_ntfs_stream_name() to exist.
My strategy is to start from the inside at unix_convert() and work my
way out through the vfs layer, call by call. This first patch does
just that, by changing unix_convert and all of its callers to operate
on struct smb_filename. Since this is such a large change, I plan on
pushing the patches in phases, where each phase keeps full
compatibility and passes make test.
The API of unix_convert has been simplified from:
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
bool allow_wcard_last_component,
char **pp_conv_path,
char **pp_saved_last_component,
SMB_STRUCT_STAT *pst)
to:
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
struct smb_filename *smb_fname,
uint32_t ucf_flags)
Currently the smb_filename struct looks like:
struct smb_filename {
char *base_name;
char *stream_name;
char *original_lcomp;
SMB_STRUCT_STAT st;
};
One key point here is the decision to break up the base_name and
stream_name. I have introduced a helper function called
get_full_smb_filename() that takes an smb_filename struct and
allocates the full_name. I changed the callers of unix_convert() to
subsequently call get_full_smb_filename() for the time being, but I
plan to eventually eliminate get_full_smb_filename().
Jeremy, we cannot just access cache_path() here without calling lp_load and
friends as well as parsing configfile from the commandline in order to make
"make test/selftest" find the correct conffile with path, etc.
I just changed it to pass the target tdbfilename as an argument, ok ?
Guenther
I used to track down the vlp problem, change the vlp test printer
not to use a static path of /tmp/vlp.tdb for the virtual print
database (as this will eventually fill up). Cause it to use
a virtual print database inside the cachepath.
Jeremy.
Also remove ads_memfree(), which was only ever a wrapper around
SAFE_FREE, used only to free the DN from ads_get_ds().
This actually makes libgpo more consistant, as it mixed a talloc and a
malloc based string on the same element.
Andrew Bartlett
Signed-off-by: Günther Deschner <gd@samba.org>
Why?? :-)
Another one of the little micro-optimizations that I just came across: If you
allocate a variable in a sub-block like the "fstring sharename" in
write_file(), gcc even with -O3 will allocate this variable unconditionally on
the stack at the beginning of the routine. So with eliminating this fstring we
cut 256 bytes of stack in a very hot code path writing to a file. It might make
us a bit more cache-friendly.
This would probably not be worth a second look if it involved larger code
changes, but this one was just too simple to let it pass :-)
This took me almost a week to find, so here a little longer explanation:
When a windows client registers printer *status* change notifies using
spoolss_RemoteFindFirstChangeNotify, it registers them to a print server handle,
not a printer handle. We were then correctly monitoring the printer status
changes but were sending out the spoolss_RouterReplyPrinterEx via the back-channel
connection with job_id set to 0 (which we only may do for monitored printer
change status notifies on printer handlers, not print server handles). Windows
was then showing a new empty dummy printer icon in the explorer as it cannot
route the notify event to the approriate local handle. It also discarded the
content of the notify event message of course. With this, printer change notify for
pausing, resuming and purging printers nicely works again here.
Jerry, Tim and all other printing gurus, please check.
Guenther
This was uncovered when the MAX FD limit was hit, causing an instant core
and invoking error reporting. This fix causes SMBD to exit, but without
building a core.
Without this, we end up adding more than one timed event. In the event handler
print_notify_event_send_messages() only one event will be deleted, all others
will fire indefinitely.
This replaces the is_dos_path bool with a more future-proof argument.
The next step is to plumb INTERNAL_OPEN_ONLY through this flag instead
of overridding the oplock_request.
This removes a use of struct current_user and the vuid
The become_user() here is unnecessary, within the spoolss handling code we have
switched to the authenticated pipe user anyway.
Jerry, please check!
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.
