| Commit message (Collapse) | Author | Age |
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The advantage is that is the name is mispellt, cpp will warn us.
$ git grep -Ee "conf.set\('(HAVE|ENABLE)_" -l|xargs sed -r -i "s/conf.set\('(HAVE|ENABLE)_/conf.set10('\1_/"
$ git grep -Ee '#ifn?def (HAVE|ENABLE)' -l|xargs sed -r -i 's/#ifdef (HAVE|ENABLE)/#if \1/; s/#ifndef (HAVE|ENABLE)/#if ! \1/;'
$ git grep -Ee 'if.*defined\(HAVE' -l|xargs sed -i -r 's/defined\((HAVE_[A-Z0-9_]*)\)/\1/g'
$ git grep -Ee 'if.*defined\(ENABLE' -l|xargs sed -i -r 's/defined\((ENABLE_[A-Z0-9_]*)\)/\1/g'
+ manual changes to meson.build
squash! build-sys: use #if Y instead of #ifdef Y everywhere
v2:
- fix incorrect setting of HAVE_LIBIDN2
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These fields are unused since kdbus support has been removed.
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THe match cookie was used by kdbus to identify matches we install
uniquely. But given that kdbus is gone, the cookie serves no process
anymore, let's kill it.
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When debug logging is enabled we show brief information about every bus
message we send or receieve. Pretty much all information is shown,
except for the error name if a message is an error (interestingly we do
print the error text however). Fix that, and add the error name as well.
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Fixup for f4b51a2d09. Suggested by Evgeny Vereshchagin.
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This object takes a number of bpf_insn members and wraps them together with
the in-kernel reference id. Will be needed by the firewall code.
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This makes it possible to run more dbus tests in a build
environment/chroot where no system bus is available.
To run the dbus test one then can use dbus-run-session.
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It's confusing to use a single void* to store data with two different
types, i.e. a userdata value which is safe to pass to ->find(), and a
userdata value which identifies the found object.
Name the latter `found_u`. This naming treats (!c->find) as a degenerate
case. (I.e. at that point, we know the object has already been found :).
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Before this commit, if you run `loginctl user-status` from
debug-shell.service (and you have no login sessions for root), you always
see this output:
0
Linger: no
because Properties.GetAll is returning success but without any properties,
when the only find() callback had returned 0 to mean "no object found".
After:
Could not get properties: Unknown object:
'/org/freedesktop/login1/user/self'
BTW I have a fix for more user-friendly messages from logind in this case.
It is pending in my local branch for #6829 "fix `loginctl enable-linger`".
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As it turns out the authentication phase times out too often than is
good, mostly due to PRNG pools not being populated during boot. Hence,
let's increase the authentication timeout from 25s to 90s, to cover for
that.
(Note that we leave the D-Bus method call timeout at 25s, matching the
reference implementation's value. And if the auth phase managed to
complete then the pools should be populated enough and mehtod calls
shouldn't take needlessly long anymore).
Fixes: #6418
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This prevents `systemctl` from runnning /bin/touch when the following
command is used:
```
systemctl -H '-oProxyCommand=/bin/touch i-shouldnt-be-here' show-environment
```
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If a message is too large to fit into the output buffer, it will be
transmitted to the kernel in several chunks. However, the FDs must
only ever be transmitted once or they will bereceived by the remote
end repeatedly.
The D-Bus specification disallows several sets of FDs attached to
one message, however, the reference implementation of D-Bus will
not reject such a message, rather it will reassign the duplicate
FDs to subsequent FD-carrying messages.
This attaches the FD array only to the first byte of the message.
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* Merge pull request #29 from shwsh/master
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Observed when running from the console of a elogind nspawn container
(see failure below).
The value of r was tested, when r was last set by
sd_session_can_graphical(). This did not correspond to the value expected.
Fix the code, so we compare relevant values now. Hopefully :).
Test failure
------------
/* Information printed is from the live system */
sd_pid_get_unit(0, …) → "session-13.scope"
sd_pid_get_user_unit(0, …) → "n/a"
sd_pid_get_slice(0, …) → "user-1000.slice"
sd_pid_get_session(0, …) → "13"
sd_pid_get_owner_uid(0, …) → 1000
sd_pid_get_cgroup(0, …) → "/user.slice/user-1000.slice/session-13.scope"
sd_uid_get_display(1000, …) → "13"
sd_uid_get_sessions(1000, …) → [2] "15 13"
sd_uid_get_seats(1000, …) → [1] "seat0"
sd_session_is_active("13") → yes
sd_session_is_remote("13") → no
sd_session_get_state("13") → "active"
sd_session_get_uid("13") → 1000
sd_session_get_type("13") → "tty"
sd_session_get_class("13") → "user"
sd_session_get_display("13") → "n/a"
sd_session_get_remote_user("13") → "n/a"
sd_session_get_remote_host("13") → "n/a"
sd_session_get_seat("13") → "seat0"
sd_session_can_multi_seat("seat0") → no
sd_session_can_tty("seat0") → no
sd_session_can_graphical("seat0") → no
sd_uid_get_state(1000, …) → active
Assertion '!!k == !!r' failed at ../src/libelogind/sd-login/test-login.c:191, function test_login(). Aborting.
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Fixes:
```
$ env -i valgrind --leak-check=full ./build/test-bus-chat
...
==7763== 1,888 (1,824 direct, 64 indirect) bytes in 1 blocks are
definitely lost in loss record 2 of 2
==7763== at 0x4C2FA50: calloc (vg_replace_malloc.c:711)
==7763== by 0x4F8FF9A: sd_bus_new (sd-bus.c:175)
==7763== by 0x4F938BF: sd_bus_open_user (sd-bus.c:1138)
==7763== by 0x109ACD: server_init (test-bus-chat.c:70)
==7763== by 0x10BCF8: main (test-bus-chat.c:526)
==7763==
```
Closes #6481
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Upstream thinks, that the auto tools are too 'legacy', or that they
are at least no longer fitting.
We follow, as the classic auto tools files have been removed, so no
other choice here...
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It's not always clear when something is a remote connection, hence only
flag the obvious cases as local.
Fixes: #6207
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Newer D-Bus versions implement the GetConnectionCredentials() driver
call to get all connection creds in one go. Make use of that to reduce
the number of bus calls we do.
When only a single credential field is queried we will still use the old
calls, which we'll also use if the new call isn't implemented.
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return the bus owner's credentials
The bus driver service is always implemented by the owner of the bus,
hence let's shortcut the credential operation and use our cached data.
This makes sure things simply work, given that dbus itself doesn't
support GetConnectionSELinuxSecurityContext() on the bus driver name
itself.
Fixes: #6120
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During early boot, we'd call getrandom(), and immediately fall back to
reading from /dev/urandom unless we got the full requested number of bytes.
Those two sources are the same, so the most likely result is /dev/urandom
producing some pseudorandom numbers for us, complaining widely on the way.
Let's change our behaviour to be more conservative:
- if the numbers are only used to initialize a hash table, a short read is OK,
we don't really care if we get the first part of the seed truly random and
then some pseudorandom bytes. So just do that and return "success".
- if getrandom() returns -EAGAIN, fall back to rand() instead of querying
/dev/urandom again.
The idea with those two changes is to avoid generating a warning about
reading from an /dev/urandom when the kernel doesn't have enough entropy.
- only in the cases where we really need to make the best effort possible
(sd_id128_randomize and firstboot password hashing), fall back to
/dev/urandom.
When calling getrandom(), drop the checks whether the argument fits in an int —
getrandom() should do that for us already, and we call it with small arguments
only anyway.
Note that this does not really change the (relatively high) number of random
bytes we request from the kernel. On my laptop, during boot, PID 1 and all
other processes using this code through libelogind request:
74780 bytes with high_quality_required == false
464 bytes with high_quality_required == true
and it does not eliminate reads from /dev/urandom completely. If the kernel was
short on entropy and getrandom() would fail, we would fall back to /dev/urandom
for those 464 bytes.
When falling back to /dev/urandom, don't lose the short read we already got,
and just read the remaining bytes.
If getrandom() syscall is not available, we fall back to /dev/urandom same
as before.
Fixes #4167 (possibly partially, let's see).
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Previously we'd propagate errors returned by user callbacks configured
in vtables back to the users only for method handlers and property
get/set handlers. This does the same for child enumeration and when we
check whether a fallback unit exists.
Without this the failure will be treated as a non-recoverable connection
error and result in connection termination.
Fixes: #6059
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The code is mostly correct, but gcc is trying to outsmart us, and emits a
warning for a "llu vs lu" mismatch, even though they are the same size (on alpha):
src/libelogind/sd-bus/bus-control.c: In function ‘kernel_get_list’:
src/libelogind/sd-bus/bus-control.c:267:42: error: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64 {aka long unsigned int}’ [-Werror=format=]
if (asprintf(&n, ":1.%llu", name->id) < 0) {
^
src/libelogind/sd-bus/bus-control.c: In function ‘bus_get_name_creds_kdbus’:
src/libelogind/sd-bus/bus-control.c:714:47: error: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64 {aka long unsigned int}’ [-Werror=format=]
if (asprintf(&c->unique_name, ":1.%llu", conn_info->id) < 0) {
^
This is hard to work around properly, because kdbus.h uses __u64 which is
defined-differently-despite-being-the-same-size then uint64_t. Thus the simple
solution of using %PRIu64 fails on amd64:
src/libelogind/sd-bus/bus-control.c:714:47: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘__u64 {aka long long unsigned int}’ [-Werror=format=]
if (asprintf(&c->unique_name, ":1.%"PRIu64, conn_info->id) < 0) {
^~~~~~
Let's just avoid the whole issue for now by silencing the warning.
After the next release, we should just get rid of the kdbus code.
Fixes #5561.
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parameter is NULL
Other functions in sd-login generally allow the output parameter to be NULL, in
which case only the number of items that would be stored in the array is returned.
Be nice and do the same here.
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C.f. 0543105b0fb13e4243b71a78f62f81fb9dde5d51.
This makes if /run/elogind/{seats,sessions,users} are missing, then
sd_get_seats(), sd_get_sessions() and sd_get_uids() return 0, that is,
an empty list, instead of -ENOENT.
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The -ENOMEDIUM return value was introduced in v232-1001-g2977724b09,
('core: make hybrid cgroup unified mode keep compat /sys/fs/cgroup/elogind hierarchy'),
and would be returned by cg_pid_get_path_shifted(), but the documented and
expected return value is -ENODATA. Let's just catch ENXIO/ENOMEDIUM and translate
it to ENODATA in all cases.
Complements 171f8f591ff27ebb5ff475b7a9d1f13a846c9331, fixes #6012.
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Needed on musl.
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We should not leak the internal error from missing directory and treat
that case the same as no machines.
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After all, we might be running on a non-elogind system.
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E.g. "/user.slice/user-1000.slice/session-15.scope" would cause -ENXIO to be
returned.
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We'd return -ENXIO, even thoug -ENODATA is documented.
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As described by Luke Shumaker:
sd_seat_get_sessions looks at /run/elogind/seats/${seat_name}:SESSIONS to get
the list of sessions (which I believe is correct), and at
/run/elogind/seats/${seat_name}:ACTIVE_SESSIONS for the list of users (which
I believe is incorrect); I believe that it should look at the UIDS field for
the list of users. As far as I can tell, the ACTIVE_SESSIONS field is never
even present in the seats file. I also believe that this has been broken
since the function was first committed almost 6 years ago.
Fixes #5743.
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sd_seat_get_sessions returns two arrays, that in principle should always match:
the session names and corresponding uids. The second array could be shorter only
if parsing or uid conversion fails. But in that case there is no way to tell
*which* uid is wrong, so they are *all* useless. It's better to simplify things and
just return an error if parsing fails.
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