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e4306fb822
Linux capabilities support and ability to preserve it for running process
after switching to a global.uid was added recently by the commit bd84387beb26
("MEDIUM: capabilities: enable support for Linux capabilities")).
This new feature hasn't yet been taken into account by last config checks,
which are performed at initialization stage.
So, to update it, let's perform it after set_identity() call. Like this,
current EUID is already changed to a global.uid and prepare_caps_for_setuid()
would unset LSTCHK_NETADM flag, only if capabilities given in the 'setcap'
keyword in the configuration file were preserved.
Otherwise, if system doesn't support Linux capabilities or they were not set
via 'setcap', we keep the previous strict behaviour: process will terminate
with an alert, in order to insist that user: either needs to change
run UID (worst case: start and run as root), or he needs to set/recheck
capabilities listed as 'setcap' arguments.
In the case, when haproxy will start and run under a non-root user this patch
doesn't change the previous behaviour: we'll still let him try the
configuration, but we inform via warning that unexpected things may occur.
Need to be backported until v2.9, including v2.9.
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)