Restore the ability to set capenabled directly in syscalls.conf.

[brooks]

Summary

This fixes generation of cloudabi syscall tables broken in r340424.

[kevans]

Ouch, command substitution in syscalls.conf... LGTM, though.

[emaste]

Ouch, command substitution in syscalls.conf

Yeah, that will be a little more interesting for non-sh parsers :)

[kevans]

In D21821#476482, @emaste wrote:

Ouch, command substitution in syscalls.conf

Yeah, that will be a little more interesting for non-sh parsers :)

Yeah... Luckily this isn't too bad and I've got it working locally in the lua world, but we really should document what's ok and not ok in these .conf files based on how they're currently done to the best of our knowledge.

One of my new pet peeves after lualoader is giving something a fairly innocuous looking extension that's actually fully flavored and not well-documented as such.

OTOH, I don't know where documentation for this in particular would live unless we started an informational syscall manpage with content like the AddingSyscalls wiki page.

[brooks]

In D21821#476563, @kevans wrote:

In D21821#476482, @emaste wrote:

Ouch, command substitution in syscalls.conf

Yeah, that will be a little more interesting for non-sh parsers :)

Yeah... Luckily this isn't too bad and I've got it working locally in the lua world, but we really should document what's ok and not ok in these .conf files based on how they're currently done to the best of our knowledge.

One of my new pet peeves after lualoader is giving something a fairly innocuous looking extension that's actually fully flavored and not well-documented as such.

OTOH, I don't know where documentation for this in particular would live unless we started an informational syscall manpage with content like the AddingSyscalls wiki page.

A better solution would probably be to have a new option to enable all syscalls in capability mode to replace this stuff. I just took this route to restore existing functionality.