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Subject: [Bug 212083] capsicum lacks compat32 support
Date: Tue, 23 Aug 2016 20:27:05 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212083

            Bug ID: 212083
           Summary: capsicum lacks compat32 support
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: emaste@freebsd.org

compat32 support for capsicum is currently stubbed out -- from
compat/freebsd32/freebsd32_capability.c:

int
freebsd32_cap_enter(struct thread *td,
    struct freebsd32_cap_enter_args *uap)
{

        /*
         * We do not have an equivalent of capabilities.conf for freebsd32
         * compatibility, so do not allow capability mode for now.
         */
        return (ENOSYS);
}

as the typical usage is something like:

if (cap_enter() < 0 && errno !=3D ENOSYS)
        die_with_error();

binaries using compat32 will silently avoid being sandboxed.

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