feat(registry): filesystem native-parity — stat mode bits, chmod, access#268
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NathanFlurry merged 1 commit intoJul 4, 2026
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Teach the VM's filesystem layer POSIX permission semantics so native C tools (vim, coreutils) behave like Linux: - wasi-libc patch exposes host permission bits through new host_fs.fd_mode / path_mode imports so stat/fstat/lstat return real mode bits (0644/0755) - chmod/fchmod implemented via the host_fs bridge (previously ENOSYS) - access() reflects the mode's rwx bits (X_OK no longer always succeeds) - truncate/ftruncate update the size stat reports; fd metadata stays coherent - fixes an intermittent EFAULT on create/write under wasm heap growth This fixes vim opening every file readonly and 'touch: Bad address', with a comprehensive fs_probe.c that is diffed 1:1 against native Linux.
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Teach the VM's filesystem layer POSIX permission semantics so native C tools
(vim, coreutils) behave like Linux:
path_mode imports so stat/fstat/lstat return real mode bits (0644/0755)
This fixes vim opening every file readonly and 'touch: Bad address', with a
comprehensive fs_probe.c that is diffed 1:1 against native Linux.