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This sentence can be misread to mean that "\x20" is the escape code for
"-" which is the only character explicitly mentioned. This lead to at
least one user loosing hair over why a mount unit for "/foo/bar-baz"
didn't work. The example escape is arbitrary so lets prevent hair loss.
If a device does not have a major/minor number attached, we use different
database names than if it does. On "change" events, we didn't copy the
devnum over, therefore, we used different paths than on 'add' or 'remove'
events (where devnum was properly copied).
Fix this by always copying the devnum into the udev-device.
(David: added commit-log from email)
We always use "int" if we retrieve boolean values from sd-bus, as "bool"
is only a single byte, but full int on va-args.
Thanks to Werner Fink for the report!
Just test if hashmap_get returns null. hashmap_contains does exactly
same thing internally so this is slightly more efficient for the true
case.
Silences a coverity warning too. CID#1237648
If we call into user callbacks, we must always propagate possible errors.
Fix bus_node_exists() to do that and adjust the callers (which already
partially propagated the error).
Also speed up that function by first checking for registered enumerators
and/or object-managers.
The dbus-spec clearly specifies that GetManagedObjects() should only work
on the root-path of an object-tree. But on that path, it works regardless
whether there are any objects available or not.
We could, technically, define all sub-paths as a root-path of its own
sub-tree. However, if we do that, we enter undefined territory:
Imagine only a fallback vtable is registered. We want
GetManagedObjects() to *NOT* fail with UNKNOWN_METHOD if it is called
on a valid sub-tree of the fallback. On the other hand, we don't want
it to work on arbitrary sub-tree. Something like:
/path/to/fallback/foobar/foobar/foobar/invalid/foobar
should not work.
However, there is no way to know which paths on a fallback are valid
without looking at there registered objects. If no objects are
registered, we have no way to figure it out.
Therefore, we now try to follow the dbus spec by only returning valid data
on registered root-paths. We treat each path as root which was registered
an object-manager on via add_object_manager(). So applications can now
directly control which paths to place an object-manager on.
We also fix the introspection to not return object-manager interfaces on
non-root paths.
Also fixes some dead-code paths initially reported by Philippe De Swert.
Currently, we save arguments passed as --prefix directly and compare them
later to absolute sysctl file-system paths. That is, you are required to
specify arguments to --prefix with leading /proc/sys/. This is kinda
uselesss. Furthermore, we replace dots by slashes in the name, which makes
it impossible to match on specific sysfs paths that have dots in their
name (like netdev names). The intention of this argument is clear, but it
never worked as expected.
This patch modifies --prefix to accept any kind of sysctl paths. It
supports paths prefixed with /proc/sys for compatibility (but drops the
erroneous dot->slash conversion), but instead applies normalize_sysctl()
which turns any name or path into a proper path. It then appends
/proc/sys/ so we can properly use it in matches.
Thanks to Jan Synacek <jsynacek@redhat.com> for catching this!
We only reject evdev FDs that are O_WRONLY as they're currently pretty
useless. The following check for O_WRONLY is thus never excercised so drop
it.
Thanks to Thomas Andersen (via coverity)!
We check the actual contents of the file on the line after but we
might as well also check the number of bytes read here.
Found by coverity. Fixes: CID#1237521
The 3 calls to sd_bus_error_get_errno appear to expect a negative
return value.
This patch negates the returned value so it matches the other error
cases in the 3 functions where sd_bus_error_get_errno is used.
sd_bus_message_get_errno can currently return either a number of
different poitive errno values (from bus-error-mapping), or a negative
EINVAL if passed null as parameter.
The check for null parameter was introduced in 40ca29a137
at the same as the function was renamed from bus_message_to_errno and
made public API. Before becoming public the function used to return
only negative values.
It is weird to have a function return both positive and negative errno
and it generally looks like a mistake. The function is guarded by the
--enable-kdbus flags so I wonder if we still have time to fix it up?
It does not have any documentation yet. However, except for a few details
it is just a convenient way to call sd_bus_error_get_errno which is documented
to return only positive errno.
This patch makes it return only positive errno and fixes up the two
calls to the function that tried to cope with both positive and negative
values.
Coverity warned that we have already dereferenced ps->sample before
null-checking it. I suspect that's not really the issue and that
the check is checking the wrong variable.
Likely the oom-check should be on the just allocated ps->sample->next.
Found by coverity. Fixes: CID#1237765
Don't manually free 'n' in error path as it's already tagged
_cleanup_free_ and will be freed once it goes out of scope,
leading to double-free in this case.
Found with coverity. Fixes: CID#1237786
Processes expecting static nodes to have the right permissions may order themselves after systemd-udevd.service,
make sure that actually guarantees what is expected.
Once upon a time logging during early boot was unreliable, so extra logging messages were
sent by udev to stderr. That is no longer a concern, so drop all fprintf() calls from udved.
