Expire list timeout may be negative for no expiry.
* bus/expirelist.c (do_expiration_with_current_time): Don't check for
expiry if expire_after is negative, will just disable the expiry timer
after the call.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
* dbus/dbus-connection.c (_dbus_connection_block_pending_call): Rework
the timeout math so instead of calculating an end time, which may
overflow, we instead calculate the elapsed time which is always
smaller than the boundaries.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
Update documentation now that INT_MAX means no timeout.
* dbus/dbus-connection.c (dbus_connection_send_with_reply): Fix
documentation now that INT_MAX will not be clamped.
(dbus_connection_send_with_reply_and_block): Update documentation too.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
Don't allocate DBusTimeout for pending call when passed INT_MAX
* dbus/dbus-pending-call.c (_dbus_pending_call_new_unlocked): When passed
INT_MAX, do not clamp the value and do not allocate a timeout for the call
(_dbus_pending_call_get_timeout_unlocked): Document that this may return
NULL.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
* dbus/dbus-connection.c (_dbus_connection_block_pending_call): Allow the
pending call to have no timeout, in which case we simply block until we
complete, have data or get disconnected.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
* dbus/dbus-connection.c (_dbus_connection_attach_pending_call_unlocked):
Don't assume that the pending call has a timeout.
(connection_timeout_and_complete_all_pending_call_unlocked): check that
the timeout was actually added before removing it; this safeguards us
if the pending call doesn't have a timeout.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
Marc Mutz [Wed, 7 Jan 2009 11:46:53 +0000 (12:46 +0100)]
configure.in: fail abstract socket test gracefully when cross-compiling
* configure.in: only run AC_CACHE_CHECK if enable_abstract_sockets=auto
* configure.in: warn that, when cross-compiling, we're unable to detect
abstract sockets availability automatically
libselinux behavior in permissive mode wrt invalid domains
Stephen Smalley wrote:
> On Tue, 2009-04-21 at 16:32 -0400, Joshua Brindle wrote:
>
>> Stephen Smalley wrote:
>>
>>> On Thu, 2009-04-16 at 20:47 -0400, Eamon Walsh wrote:
>>>
>>>> Stephen Smalley wrote:
>>>>
>> <snip>
>>
>>
>>> No, I don't want to change the behavior upon context_to_sid calls in
>>> general, as we otherwise lose all context validity checking in
>>> permissive mode.
>>>
>>> I think I'd rather change compute_sid behavior to preclude the situation
>>> from arising in the first place, possibly altering the behavior in
>>> permissive mode upon an invalid context to fall back on the ssid
>>> (process) or the tsid (object). But I'm not entirely convinced any
>>> change is required here.
>>>
>>>
>> I just want to follow up to make sure we are all on the same page here. Was the
>> suggestion to change avc_has_perm in libselinux or context_to_sid in the kernel
>> or leave the code as is and fix the callers of avc_has_perm to correctly handle
>> error codes?
>>
>> I prefer the last approach because of Eamon's explanation, EINVAL is already
>> passed in errno to specify the context was invalid (and if object managers
>> aren't handling that correctly now there is a good chance they aren't handling
>> the ENOMEM case either).
>>
>
> I'd be inclined to change compute_sid (not context_to_sid) in the kernel
> to prevent invalid contexts from being formed even in permissive mode
> (scenario is a type transition where role is not authorized for the new
> type). That was originally to allow the system to boot in permissive
> mode. But an alternative would be to just stay in the caller's context
> (ssid) in that situation.
>
> Changing the callers of avc_has_perm() to handle EINVAL and/or ENOMEM
> may make sense, but that logic should not depend on enforcing vs.
> permissive mode.
>
>
FWIW, the following patch to D-Bus should help:
bfo21072 - Log SELinux denials better by checking errno for the cause
Note that this does not fully address the bug report since
EINVAL can still be returned in permissive mode. However the log
messages will now reflect the proper cause of the denial.
Signed-off-by: Eamon Walsh <ewalsh@tycho.nsa.gov> Signed-off-by: Colin Walters <walters@verbum.org>
William Lachance [Tue, 21 Apr 2009 17:51:46 +0000 (13:51 -0400)]
Bug 19567 - Make marshaling code usable without DBusConnection
Some projects want to reuse the DBus message format, without
actually going through a DBusConnection. This set of changes
makes a few functions from DBusMessage public, and adds a new
function to determine the number of bytes needed to demarshal
a message.
Colin Walters [Wed, 25 Feb 2009 16:10:15 +0000 (11:10 -0500)]
Bug 20137 - Fix alignment usage when demarshaling basics
We can't safely type-pun from e.g. char * to DBusBasicValue *, because
the latter has higher alignment requirements. Instead, create an
explicit pointer for each case.
Also, we mark each one volatile to sidestep strict aliasing issues, for
the future when we turn on strict aliasing support.
Original patch and review from Jay Estabrook <jay.estabrook@hp.com>.
Colin Walters [Wed, 1 Apr 2009 16:02:00 +0000 (12:02 -0400)]
Bug 17803 - Fix both test case and validation logic
The previous commit had errors in both the test case and
the validation logic. The test case was missing a trailing
comma before the previous one, so we weren't testing the
signature we thought we were.
The validation logic was wrong because if the type was not valid,
we'd drop through the entire if clause, and thus skip returning
an error code, and accept the signature.
libselinux behavior in permissive mode wrt invalid domains
Stephen Smalley wrote:
> On Tue, 2009-04-21 at 16:32 -0400, Joshua Brindle wrote:
>
>> Stephen Smalley wrote:
>>
>>> On Thu, 2009-04-16 at 20:47 -0400, Eamon Walsh wrote:
>>>
>>>> Stephen Smalley wrote:
>>>>
>> <snip>
>>
>>
>>> No, I don't want to change the behavior upon context_to_sid calls in
>>> general, as we otherwise lose all context validity checking in
>>> permissive mode.
>>>
>>> I think I'd rather change compute_sid behavior to preclude the situation
>>> from arising in the first place, possibly altering the behavior in
>>> permissive mode upon an invalid context to fall back on the ssid
>>> (process) or the tsid (object). But I'm not entirely convinced any
>>> change is required here.
>>>
>>>
>> I just want to follow up to make sure we are all on the same page here. Was the
>> suggestion to change avc_has_perm in libselinux or context_to_sid in the kernel
>> or leave the code as is and fix the callers of avc_has_perm to correctly handle
>> error codes?
>>
>> I prefer the last approach because of Eamon's explanation, EINVAL is already
>> passed in errno to specify the context was invalid (and if object managers
>> aren't handling that correctly now there is a good chance they aren't handling
>> the ENOMEM case either).
>>
>
> I'd be inclined to change compute_sid (not context_to_sid) in the kernel
> to prevent invalid contexts from being formed even in permissive mode
> (scenario is a type transition where role is not authorized for the new
> type). That was originally to allow the system to boot in permissive
> mode. But an alternative would be to just stay in the caller's context
> (ssid) in that situation.
>
> Changing the callers of avc_has_perm() to handle EINVAL and/or ENOMEM
> may make sense, but that logic should not depend on enforcing vs.
> permissive mode.
>
>
FWIW, the following patch to D-Bus should help:
bfo21072 - Log SELinux denials better by checking errno for the cause
Note that this does not fully address the bug report since
EINVAL can still be returned in permissive mode. However the log
messages will now reflect the proper cause of the denial.
Signed-off-by: Eamon Walsh <ewalsh@tycho.nsa.gov> Signed-off-by: Colin Walters <walters@verbum.org>
William Lachance [Tue, 21 Apr 2009 17:51:46 +0000 (13:51 -0400)]
Bug 19567 - Make marshaling code usable without DBusConnection
Some projects want to reuse the DBus message format, without
actually going through a DBusConnection. This set of changes
makes a few functions from DBusMessage public, and adds a new
function to determine the number of bytes needed to demarshal
a message.
Colin Walters [Wed, 1 Apr 2009 16:02:00 +0000 (12:02 -0400)]
Bug 17803 - Fix both test case and validation logic
The previous commit had errors in both the test case and
the validation logic. The test case was missing a trailing
comma before the previous one, so we weren't testing the
signature we thought we were.
The validation logic was wrong because if the type was not valid,
we'd drop through the entire if clause, and thus skip returning
an error code, and accept the signature.
Colin Walters [Wed, 25 Feb 2009 16:10:15 +0000 (11:10 -0500)]
Bug 20137 - Fix alignment usage when demarshaling basics
We can't safely type-pun from e.g. char * to DBusBasicValue *, because
the latter has higher alignment requirements. Instead, create an
explicit pointer for each case.
Also, we mark each one volatile to sidestep strict aliasing issues, for
the future when we turn on strict aliasing support.
Original patch and review from Jay Estabrook <jay.estabrook@hp.com>.
The AC_CANONICAL_TARGET macro and the $target_os variables are used for the
target of compilers and other code-generation tools, and should not be used
during cross-compile of generic software. Replace them with
AC_CANONICAL_HOST and $host_os instead, as they should have been from the
start.
For a breakdown of what host, build and target machines are, please see
http://blog.flameeyes.eu/s/canonical-target .
Colin Walters [Sat, 20 Dec 2008 01:02:14 +0000 (20:02 -0500)]
Enable -Werror by default with --enable-maintainer-mode, and change warnings
Important compiler warnings were being lost in the noise from warnings
we know about but aren't problems, and moreover made using -Werror
difficult. Now we expect *all* developers and testers to be using
-Werror.
The AC_CANONICAL_TARGET macro and the $target_os variables are used for the
target of compilers and other code-generation tools, and should not be used
during cross-compile of generic software. Replace them with
AC_CANONICAL_HOST and $host_os instead, as they should have been from the
start.
For a breakdown of what host, build and target machines are, please see
http://blog.flameeyes.eu/s/canonical-target .
Colin Walters [Sat, 20 Dec 2008 01:02:14 +0000 (20:02 -0500)]
Enable -Werror by default with --enable-maintainer-mode, and change warnings
Important compiler warnings were being lost in the noise from warnings
we know about but aren't problems, and moreover made using -Werror
difficult. Now we expect *all* developers and testers to be using
-Werror.
Colin Walters [Thu, 18 Dec 2008 00:29:39 +0000 (19:29 -0500)]
Add requested_reply to send denials, and connection loginfo to "would deny"
The requested_reply field is necessary in send denials too because
it's used in the policy language. The connection loginfo lack in
"would deny" was just an oversight.
Colin Walters [Wed, 17 Dec 2008 21:01:28 +0000 (16:01 -0500)]
Add uid, pid, and command to security logs
Extend the current security logs with even more relevant
information than just the message content. This requires
some utility code to look up and cache (as a string)
the data such as the uid/pid/command when a connection is
authenticated.
Colin Walters [Thu, 18 Dec 2008 00:29:39 +0000 (19:29 -0500)]
Add requested_reply to send denials, and connection loginfo to "would deny"
The requested_reply field is necessary in send denials too because
it's used in the policy language. The connection loginfo lack in
"would deny" was just an oversight.
Colin Walters [Wed, 17 Dec 2008 21:01:28 +0000 (16:01 -0500)]
Add uid, pid, and command to security logs
Extend the current security logs with even more relevant
information than just the message content. This requires
some utility code to look up and cache (as a string)
the data such as the uid/pid/command when a connection is
authenticated.
Colin Walters [Tue, 9 Dec 2008 14:15:06 +0000 (09:15 -0500)]
Bug 18229: Allow signals
Our previous fix went too far towards lockdown; many things rely
on signals to work, and there's no really good reason to restrict
which signals can be emitted on the bus because we can't tie
them to a particular sender.
Colin Walters [Tue, 9 Dec 2008 14:15:06 +0000 (09:15 -0500)]
Bug 18229: Allow signals
Our previous fix went too far towards lockdown; many things rely
on signals to work, and there's no really good reason to restrict
which signals can be emitted on the bus because we can't tie
them to a particular sender.
Tomas Hoger [Thu, 4 Dec 2008 20:19:13 +0000 (15:19 -0500)]
Bug 18229 - Change system.conf to correctly deny non-reply sends by default
The previous rule <allow send_requested_reply="true"/> was actually
applied to all messages, even if they weren't a reply. This meant
that in fact the default DBus policy was effectively allow, rather
than deny as claimed.
This fix ensures that the above rule only applies to actual reply
messages. Signed-off-by: Colin Walters <walters@verbum.org>
Tomas Hoger [Thu, 4 Dec 2008 20:19:13 +0000 (15:19 -0500)]
Bug 18229 - Change system.conf to correctly deny non-reply sends by default
The previous rule <allow send_requested_reply="true"/> was actually
applied to all messages, even if they weren't a reply. This meant
that in fact the default DBus policy was effectively allow, rather
than deny as claimed.
This fix ensures that the above rule only applies to actual reply
messages. Signed-off-by: Colin Walters <walters@verbum.org>
projects / thirdparty / dbus.git / log
