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is produced when a process exits abnormally.
First, we coalesce the core dumping code so that we greatly improve our
odds of being able to produce a core file, even in the case of a memory
fault. I've removed duplicates of dump_core() and split it in two to
reduce the amount of work needed to actually do the dump.
Second, we refactor the exit_server code path to always log an explanation
and a stack trace. My goal is to always produce enough log information
for us to be able to explain any server exit, though there is a risk
that this could produce too much log information on a flaky network.
Finally, smbcontrol has gained a smbd fault injection operation to test
the changes above. This is only enabled for developer builds.
(This used to be commit 56bc02d644)
realloc can return NULL in one of two cases - (1) the realloc failed,
(2) realloc succeeded but the new size requested was zero, in which
case this is identical to a free() call.
The error paths dealing with these two cases should be different,
but mostly weren't. Secondly the standard idiom for dealing with
realloc when you know the new size is non-zero is the following :
tmp = realloc(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
However, there were *many* *many* places in Samba where we were
using the old (broken) idiom of :
p = realloc(p, size)
if (!p) {
return error;
}
which will leak the memory pointed to by p on realloc fail.
This commit (hopefully) fixes all these cases by moving to
a standard idiom of :
p = SMB_REALLOC(p, size)
if (!p) {
return error;
}
Where if the realloc returns null due to the realloc failing
or size == 0 we *guarentee* that the storage pointed to by p
has been freed. This allows me to remove a lot of code that
was dealing with the standard (more verbose) method that required
a tmp pointer. This is almost always what you want. When a
realloc fails you never usually want the old memory, you
want to free it and get into your error processing asap.
For the 11 remaining cases where we really do need to keep the
old pointer I have invented the new macro SMB_REALLOC_KEEP_OLD_ON_ERROR,
which can be used as follows :
tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
SMB_REALLOC_KEEP_OLD_ON_ERROR guarentees never to free the
pointer p, even on size == 0 or realloc fail. All this is
done by a hidden extra argument to Realloc(), BOOL free_old_on_error
which is set appropriately by the SMB_REALLOC and SMB_REALLOC_KEEP_OLD_ON_ERROR
macros (and their array counterparts).
It remains to be seen what this will do to our Coverity bug count :-).
Jeremy.
(This used to be commit 1d710d06a2)
"rename user script" to do the rename of the posix machine account (this
might be changed later). Fixes#2331.
Guenther
(This used to be commit b2eac2e6eb)
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)
not on the server.
We now preserve this windows variable (important for vampired setups)
and correctly substitute only the "%L"s in strings like:
"%LOGONSERVER% %L %lOgOnSeRvEr% %L".
Guenther
(This used to be commit dccf777f42)
where large print jobs can have out-of-order offsets. Bug found
by Arcady Chernyak <Arcady.Chernyak@efi.com>
Jeremy.
(This used to be commit 482f7e0e37)
{become,unbecome}_root() blocks. We've already done
a print_access_check() to ensure the user is admin.
The means that non-root users can pause and manage printers.
I really don't see how this worked before without setuid
binaries on the server.
Also update print_queue_update() interface to allow an smbd
to update the print queue cache locally rather than going through
the bg lpq daemon. This is needed for things like pjob_delete()
to ensure the cache is current for the specific client.
(This used to be commit f75369ec86)
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)
the print queue cache just because multiple smbd
processes sent a message that it was out of date.
* add some extra debug messages while trying to track down
down jobs being left in the queue after printing has
completed.
(This used to be commit a64505d52f)
- fix typo in libads/ldap_printer.c:39, ads_find_printer_on_server()
(originally libads-typo.patch)
- fix leak in printing/nt_printing.c, is_printer_published()
(originally is_printer_published-leak.patch)
- fix double print_backend_init() calls, now only called from main()
- restructuring in printing/nt_printing.c
- replaced (un)publish_it() with ads-specific functions
- moved common code to nt_printer_publish()
- improved error handling in several places
- added check_published_printers() in printing/nt_printing.c, to verify
that each published printer is actually in the directory at startup
- changed calling semantics of mod_a_printer, dump_a_printer, and
update_driver_init to be more consistent with the rest of the api and
reduce some copying
(This used to be commit 50a5a3dbd0)
* BUG 1627: fix for NIS compiles on HPUX 11.00, AIX 4.3 and 5.1
patch from Olaf Flebbe <o.flebbe@science-computing.de>.
Will need to watch this one in the build farm.
* Fix bug found by rwf@loonybin.net where the PRINT_ATTRIBUTE_PUBLISHED
was getting reset by attempts to sanitize the defined attributes
(PRINTER_ATTRIBUTE_SAMBA)
* Resolve name conflict on DEC OSF-5.1 (inspired by patch from
Adharsh Praveen <rprav@india.hp.com>)
* Work around parsing error in the print change notify code
(not that the alignment bug is still there but reording the
entries in the array works around it).
* remove duplicate declaration of getprintprocdir from rpcclient.
(This used to be commit 7474c6a446)
The problem was that the current_printif struct was set during
print_backend_init() based on the 'printcap name'. So you could
not use cups and then override the setting for a specific printer
by setting 'printing = bsd' (a common setup for pdf generation
print services.
There is a subtle change in behavior in that the print
interface functions are selecting on the basis of lp_printing()
and not lp_printcap_name(), but the new behavior seems more
intuitive IMHO.
(This used to be commit 14de9c0657)
The changes the name of the job passed off to cups
from "Test Page" to "smbprn.00000033 Test Page" so that
we can get the smb jobid back from lpq. Working on bug
770.
(This used to be commit 5979f4d645)
jobs) by only enforce the 'max reported print jobs' parameter
when it is non-zero.
* Fixed bug 338 by making sure that data values are written
out when we are marshalling an EnumPrinterDataEx() reply.
This probably fixes other bugs reported against point-n-print
feature in 3.0.0
(This used to be commit fd98af75d6)
fix the confusion when we tdb_lock_bystring() but
we retrieve an entry using tdb_fetch_by_string.
It's now always tdb.*bystring()
(This used to be commit 66359531b8)
