We now have a local implementation in string-util-fundamental.c, but
it's useful at a lot of other places, hence let's give it a more
expressive name and share it across the tree.
Follow-up for: 8d9156660d
This was a trivial wrapper that didn't provide any added value. With more
complicated structures like strvs, hashmaps, sets, and arrays, it is possible
to have an empty container. But in case of a list, the list is empty only when
the head is missing.
Also, we generally want the positive condition, so we replace many
if (!LIST_IS_EMPTY(x)) with just if (x).
In function 'sd_id128_equal',
inlined from 'journal_file_verify' at ../src/libsystemd/sd-journal/journal-verify.c:1047:29:
../src/systemd/sd-id128.h:119:43: error: 'entry_boot_id.qwords[0]' may be used uninitialized [-Werror=maybe-uninitialized]
119 | return a.qwords[0] == b.qwords[0] && a.qwords[1] == b.qwords[1];
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/libsystemd/sd-journal/journal-verify.c: In function 'journal_file_verify':
../src/libsystemd/sd-journal/journal-verify.c:823:20: note: 'entry_boot_id.qwords[0]' was declared here
823 | sd_id128_t entry_boot_id;
| ^~~~~~~~~~~~~
cc1: all warnings being treated as errors
entry_boot_id is only used when entry_monotonic_set has been set, and that's
only done in one place where entry_boot_id is also initalized.
We have RxBufferSize= and TxBufferSize= in .link files. Let's use the same
abbreviation here. OTOH, "inc" could be short for "increment" or "increase",
let's avoid that.
Same story as before: disabling a non-existent event source shouldn't
need to be guarded by an if. I retained the wrapper so that that we don't
have to say SD_EVENT_OFF in the many places where this is called.
This is a natural use case, and instead of defining a wrapper to do this
for us, let's just make this part of the API. Calling with NULL was not
allowed, so this is not a breaking change to the interface.
(After sd_event_source_is_enabled was originally added, we introduced
sd_event_source_disable_unref() and other similar functions which accept
NULL. So not accepting NULL here is likely to confuse people. Let's just
make the API usable with minimal fuss.)
Before, sd_netlink_message_read() expected to fill a buffer completely,
and would return -EIO if the attribute being read was shorter than the
buffer. This means that the function can be used to "peek" into attributes
(by specifying a short buffer to just read part of the attribute), but
cannot be used to read something into a union without knowing beforehand
which specific field in the union is being filled. That latter operation
seems more useful (messages are short, so we don't really need to do partial
reads), so let's allow reads that don't fill the output buffer completely.
We find this function useful in our code, so no reason not to export it.
I changed the order of last two words in the name to match the arguments.
(With "equal_string" I expected sd_id128_t first, string second, but in
actual use, the second argument is usually a long constant so it's nice
to keep this order of arguments.)
The usual: if we find that function useful, other users of the library
will too. In particular, the v-variants are necessary to build pass-thru
wrappers.
It had two symbols which were not actually exported because they were not
listed in libsystemd.sym. They were also entirely unused in our codebase.
I don't think it makes much sense to export just those two functions, and
it doesn't make to build a string processing library in systemd either.
History of the file shows that it was created in
faaa5728d9 'utf8: export utf8 validation functions as part of sd-bus'
and hasn't gone even one non-trivial change since then ;)
It was added originally in 65f568bbeb. The API is
has stabilized pretty much, and generally follows the usual style for
libsystemd. We've held it as a public-but-private library for almost 10 years,
let's export it.
sd_netlink_sendv() and sd_nfnl_nft_*() are excluded.
libsystemd.so seems to grow by 12k.
Before we had the following scheme:
mempool_enabled() would check mempool_use_allowed, and
libsystemd-shared would be linked with a .c file that provides mempool_use_allowed=true,
while other things would linked with a different .c file with mempool_use_allowed=false.
In the new scheme, mempool_enabled() itself is a weak symbol. If it's
not found, we assume false. So it only needs to be provided for libsystemd-shared,
where it can return false or true.
test-set-disable-mempool is libshared, so it gets the symbol. But then we
actually disable the mempool via envvar. mempool_enable() is called to check
its return value directly.
Fixes a bug introduced by 578cd1855b.
The function `data_object_in_hash_table()` calls
`journal_file_move_to_object()` with `OBJECT_DATA`. Hence,
previously obtained pointer to a data object may be now invalid.
Fixes#23794.
This reverts PR #23269 and its follow-up commit. Especially,
2299b1cae3 (partially), and
3cf63830ac.
The PR was merged without final approval, and has several issues:
- The NetLabel for static addresses are not assigned, as labels are
stored in the Address objects managed by Network, instead of Link.
- If NetLabel is specified for a static address, then the address
section will be invalid and the address will not be configured,
- It should be implemented with Request object,
- There is no test about the feature.
Fixes: CID#1469712
CID 1469712 (#1 of 1): Unused value (UNUSED_VALUE)
returned_value: Assigning value from sd_id128_from_string(word + 2, &boot_id) to r here,
but that stored value is overwritten before it can be used.
Not only block subsystem, but also misc has device named "loop*", and
the test always said that the following device is newly found:
---
/* test_sd_device_enumerator_filter_subsystem */
New device found: subsystem:misc syspath:/sys/devices/virtual/misc/loop-control
1 new devices are found in re-scan
---
The lookup "works", but is not useful. It was introduced in
9c66f52813.
And printf will NULL args is invalid was introduced in
5d1ce25728 when support for fds was initally
added :(
New directive `NetLabel=` provides a method for integrating dynamic network
configuration into Linux NetLabel subsystem rules, used by Linux security
modules (LSMs) for network access control. The option expects a whitespace
separated list of NetLabel labels. The labels must conform to lexical
restrictions of LSM labels. When an interface is configured with IP addresses,
the addresses and subnetwork masks will be appended to the NetLabel Fallback
Peer Labeling rules. They will be removed when the interface is
deconfigured. Failures to manage the labels will be ignored.
Example:
```
[DHCP]
NetLabel=system_u:object_r:localnet_peer_t:s0
```
With the above rules for interface `eth0`, when the interface is configured with
an IPv4 address of 10.0.0.0/8, `systemd-networkd` performs the equivalent of
`netlabelctl` operation
```
$ sudo netlabelctl unlbl add interface eth0 address:10.0.0.0/8 label:system_u:object_r:localnet_peer_t:s0
```
Result:
```
$ sudo netlabelctl -p unlbl list
...
interface: eth0
address: 10.0.0.0/8
label: "system_u:object_r:localnet_peer_t:s0"
...
```
