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EXFULL
EXFULL: Linux legacy errno
EXFULL (errno 3) reports that the legacy exchange table has no free slot for a new exchange object. These names come from historical System V/XENIX compatibility interfaces; on modern Linux they usually point to a driver, STREAMS-compatibility layer, or legacy IPC contract rather than a general filesystem error.
Evidence to capture
Record exchange-table capacity, active entries, owner processes, and allocation operation.
Focused test
release a confirmed completed exchange and repeat one allocation while monitoring table occupancy.
Correction
fix leaked exchange objects or increase the supported table capacity if workload legitimately exceeds it.
Verification
Repeat the original system call and confirm it passes the former EXFULL boundary with the same object identity.
Technical references
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