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There is little point in #defining and #undefining CAP_LAST_CAP multiple times.
The check is only done in developer mode. After all, it's not an error to
compile on a newer kernel, and we shouldn't even warn in that case.
We have four legal cases:
1. /usr/lib/os-release exists and /etc/os-release is a symlink to it
2. both exist but /etc/os-release is not a symlink to /usr/lib/os-release
3. only /usr/lib/os-release exists
4. only /etc/os-release exists
The generic setup code in test-functions and create-busybox-image didn't handle
case 3.
The test-specific code in TEST-50 didn't handle 2 (because the general setup
code would only install /etc/os-release in the image and
grep -f /usr/lib/os-release would not work) and 4 (same reason) and would fail
in case 3 in generic setup.
The parent process may not perform any label operation, so the
database might not get updated on a SELinux policy change on its own.
Reload the label database once on a policy change, instead of n times
in every started child.
Switch from security_getenforce() and netlink notifications to the
SELinux status page.
This usage saves system calls and will also be the default in
libselinux > 3.1 [1].
[1]: 05bdc03130
I find this version much more readable.
Add replacement defines so that when acl/libacl.h is not available, the
ACL_{READ,WRITE,EXECUTE} constants are also defined. Those constants were
declared in the kernel headers already in 1da177e4c3f41524e886b7f1b8a0c1f,
so they should be the same pretty much everywhere.
Previously:
1. last_error wouldn't be updated with errors from is_dir;
2. We'd always issue a stat(), even for binaries without execute;
3. We used stat() instead of access(), which is cheaper.
This change avoids all of those, by only checking inside X_OK-positive
case whether access() works on the path with an extra slash appended.
Thanks to Lennart for the suggestion.
Add After=systemd-networkd.socket to avoid a race condition and networkd
falling back to the non-socket activation code.
Also add Wants=systemd-networkd.socket, so the socket is started when
networkd is started via `systemctl start systemd-networkd.service`.
A Requires is not strictly necessary, as networkd still ships the
non-socket activation code. Should this code be removed one day, the
Wants should be bumped to Requires accordingly.
See also 5544ee85163733eaa50f598fcf3bd9421d4a42f9.
Fixes: #16809
This allows us to later port nss-resolve to use Varlink rather than
D-Bus for resolution. This has the benefit that nss-resolve based
resoluton works even without D-Bus being up. And it's faster too.
It's strictly bus-specific, hence let's move this to resolved-bus.c like
the rest of the bus specific logic.
This is also in preparation for adding an alternative varlink transport,
which needs similar functionality, but varlink instead of bus-specific.
Let's prepare for adding a new varlink interface, and thus rename the
"request" field to "bus_request", so that we can later add a
varlink_request field too.
It's pretty useful to be able to access the bytes generically, without
acknowledging a specific family, hence let's a third way to access an
in_addr_union.
Imagine $PATH /a:/b. There is an echo command at /b/echo. Under this
configuration, this works fine:
% systemd-run --user --scope echo .
Running scope as unit: run-rfe98e0574b424d63a641644af511ff30.scope
.
However, if I do `mkdir /a/echo`, this happens:
% systemd-run --user --scope echo .
Running scope as unit: run-rcbe9369537ed47f282ee12ce9f692046.scope
Failed to execute: Permission denied
We check whether the resulting file is executable for the performing
user, but of course, most directories are anyway, since that's needed to
list within it. As such, another is_dir() check is needed prior to
considering the search result final.
Another approach might be to check S_ISREG, but there may be more gnarly
edge cases there than just eliminating this obviously pathological
example, so let's just do this for now.
