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Shane McCarronandClaude Opus 5
1133ba3246
- Classify touch failures explicitly. A file is lost only on proof that the path no longer names it: ENOENT, st_nlink 0, another inode, a symlink or other non-regular entry, or a replaced lock directory. Any other syscall failure (EIO, ESTALE, ENOMEM, EACCES on reopen) is transient, so a flaky runtime volume no longer stops the daemon. The POSIX private-lock touch and the ipc lock/marker touches share this rule; the Windows touch reports a failed handle query as transient. - The identity marker is classified by path (fstatat, no follow) before it is reopened, so replacement by a symlink is now loss, not a transient reopen failure. - Tests: symlink replacement of the identity marker (lost); an unreadable marker is transient (-1) and recovers (1) once readable; the cohort touch test ages both held files and asserts they were refreshed. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Signed-off-by: Shane McCarron <shane.mccarron@corvexconnect.com>