| Previous | Next |
| ENOANO | ECONNRESET |
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. Save errno immediately after the failing call, together with its return value, because later library or logging calls can overwrite thread-local error state.
Focused test
release a confirmed completed exchange and repeat one allocation while monitoring table occupancy. Keep the process, device/endpoint and deployed driver version fixed so the comparison changes only the suspected boundary.
Correction
fix leaked exchange objects or increase the supported table capacity if workload legitimately exceeds it. If the interface is provided by a compatibility driver, verify its documented ABI and object lifetime instead of assuming that a numerically similar errno from another UNIX has the same contract.
Verification
Repeat the original system call and confirm it passes the former EXFULL boundary with the same object identity. If another errno appears, preserve it as a separate result from the next failing operation.
Technical references
- Linux man-pages: errno(3)
- Linux kernel: asm-generic errno definitions
- GNU C Library: error codes
- illumos: STREAMS programming documentation
Looking for a different code? Search another status or error code.