mallinfo() is deprecated because it uses `int` for the members of the
returned struct, whereas mallinfo2() uses `size_t`. It's available
since glibc 2.33.
After establishing an IKE_SA, we check if any of its child configs
define generic SELinux labels and install trap policies for them if
necessary narrowed to the current (virtual) IPs.
Don't abort the script if the version is reported as UNKNOWN, which happens
on CI hosts where the repository is only cloned with a certain depth (which
may not include the latest tag).
Also, never map VERSION to UNKNOWN.
Fixes: 2e522952c77d ("configure: Optionally use version information obtained from Git in executables")
The variable GIT_VERSION is always defined, either obtained from Git or
a file that is embedded in tarballs when they are built. Optionally,
that version is declared as VERSION in config.h so it will be used e.g. in
the daemons when they print the version number.
There is a check that should catch missing tags (i.e. if the version number
in AC_INIT() isn't a prefix of the version obtained via Git).
The file is usually opened/created by root, however, if user/group IDs
are configured and the configuration is reloaded, the file will be reopened
as configured user. Like with UNIX sockets we only attempt to change
the user if we have CAP_CHOWN allowing a start as regular user.
We don't have chown() on Windows, so check for it.
Also makes it configurable via configure script. Depending on `$datadir` is
not ideal as package maintainers might set that to a custom value. Depending
on `$datarootdir` might have been better, the default if pkg-config fails is
now based on that.
References #3339.
