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feat(loader): execute a sealed filesystem ELF from Zsh - #149
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Add an opt-in Owner-only snapshot exec path with sealed filesystem acquisition, eager loader validation and C004 publication receipts. Deny boot-image fallbacks in this profile and preserve existing profiles and resource ceilings. Focused checks, compiled fits and the reviewed native helper23/status23/prompt/export/reclaim trial pass. Full-root coverage and general execution remain separate gates.
This was referenced Nov 4, 2026
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Real Zsh can now execute one sealed ELF acquired from OpenZFS through the Rust Owner. The default-off
native-zsh-file-execprofile adds Owner-only snapshot exec at0x2300B, reuses eager loader/publication checks with a C004 receipt, and denies all three boot-image fallback paths. The Owner retains the eligible object, validates a complete read and close, and keeps namespace authority out of the child.Focused kernel/Owner/loader, failure, omission and old-profile checks pass. Actual parent/helper/Owner/kernel fits stay within existing ceilings. The separately reviewed native trial passed in38.678s: helper23, printed23 and prompt return, READY/C004,3548 acquired bytes/known close,42/96 requests, normal parent/engine exit/export, mode restoration,21 cleanup phases and three reclaims; both host holders and five clients have known cleanup. The tiny ELF fits3548/4096 bytes, Owner RX73552/73728 and selected kernel stack61440/65536.
This is the owner-approved fixed checkpoint. Full-root coverage remains open in #141; general execution, login, cold boot-to-program, packages and R1 retain their own gates. Earlier failed preparation/analysis attempts remain recorded separately; no full-root or general peak pass is claimed.
Closes #148.