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This version builds every module into the flua binary itself, since all
of the bootstrap tools are built -DNO_SHARED. As a result, we also
cannot dlsym(), so we can't really discover the names of our newly
builtin modules. Instead, just build out a linker set with all of our
luaopen_*() functions to register everything up-front.
Building in all of the modules isn't strictly necessary, but it means
that we have an example of how to add a bootstrap module everywhere you
go and one doesn't need to consider whether bootstrap flua can use a
module when writing scripts. On my build machine, the consequence on
our binary size is an increase from around 1.6M -> 1.9M, which isn't
really that bad.
.lua modules can install into their usual path below $WORLDTMP/legacy
and we'll pick them up automagically by way of the ctor that sets up
LUA_PATH early on.
This re-lands bootstrap module support with a more sensible subset, and
after having verified that it cross-builds fine on macOS and Linux -- we
cannot do libfreebsd on !FreeBSD because it's more system header
dependant. We also need to bootstrap libmd to bring in libhash, and
libucl + libyaml.
Reviewed by: bapt, emaste (both previous version)
Differential Revision: https://reviews.freebsd.org/D51890
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This reverts commit 1953a12ee2cde1afacb3e3f7612d89695c96e04f, because it
cannot work at all on macOS without more work, at a minimum. We use
linker sets for module discovery, but we don't have a version of this
that works for mach-o at the moment.
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This version builds every module into the flua binary itself, since all
of the bootstrap tools are built -DNO_SHARED. As a result, we also
cannot dlsym(), so we can't really discover the names of our newly
builtin modules. Instead, just build out a linker set with all of our
luaopen_*() functions to register everything up-front.
Building in all of the modules isn't strictly necessary, but it means
that we have an example of how to add a bootstrap module everywhere you
go and one doesn't need to consider whether bootstrap flua can use a
module when writing scripts. On my build machine, the consequence on
our binary size is an increase from around 1.6M -> 1.9M, which isn't
really that bad.
.lua modules can install into their usual path below $WORLDTMP/legacy
and we'll pick them up automagically by way of the ctor that sets up
LUA_PATH early on.
Reviewed by: bapt, emaste
Differential Revision: https://reviews.freebsd.org/D51890
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Each one is an arbitrary string associated with a jail. It can be set
upon jail creation or added/modified later:
> jail -cm ... meta="tag1=value1 tag2=value2" env="configuration"
The values are not inherited from the parent jail.
A parent jail can read both metadata parameters, while a child jail can
read only env via security.jail.env sysctl.
The maximum size of meta or env per jail is controlled by the
global security.jail.meta_maxbufsize sysctl. Decreasing it does not
alter the existing meta information.
Each metadata buffer can be handled as a set of key=value\n strings:
> jail -cm ... meta="$(echo k1=v1; echo k2=v2)" env.1=one
> jls meta.k2 env.1 meta.k1
While meta.k1= resets the value to an empty string, the meta.k1 without
the equal sign removes the given key.
Relnotes: yes
Reviewed by: jamie
Tested by: dch
Sponsored by: SkunkWerks GmbH
Differential Revision: https://reviews.freebsd.org/D47668
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Follow the path of what is done with bsnmp, build the modules along
with the main binary, this allows to build the modules at a moment
where all needed libraries are already built and available in the
linker path instead of having to declare all the libraries which a
flua module will be linked to in _prebuild_libs.
Discused with: markj
Reviewed by: markj, jrtc27, kevans, imp
Accepted by: kevans, imp
Differential Revision: https://reviews.freebsd.org/D46610
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