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compiled conditionally on options CAPABILITIES: Add a new credential flag, CRED_FLAG_CAPMODE, which indicates that a subject (typically a process) is in capability mode. Add two new system calls, cap_enter(2) and cap_getmode(2), which allow setting and querying (but never clearing) the flag. Export the capability mode flag via process information sysctls. Sponsored by: Google, Inc. Reviewed by: anderson Discussed with: benl, kris, pjd Obtained from: Capsicum Project MFC after: 3 months