errno 86 (ESTRPIPE): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: a STREAMS pipe operation hit a compatibility-layer stream state problem.

Could be also:
Constant	Type	OS
ERROR_INVALID_PASSWORD	Win32 error	Windows
EBADARCH	errno	Mac
ELIBMAX	errno	Solaris
INSTRUCTION_COHERENCY_EXCEPTION	BugCheck Code	Windows

Previous	Next
ERESTART	EUSERS

ESTRPIPE

ESTRPIPE is another STREAMS compatibility errno retained by Linux. The name should not be read as the ordinary Linux pipe error. For a normal pipe or FIFO, closed endpoints are typically diagnosed with EPIPE, ENXIO, or readiness events, depending on the operation.

If this code appears, look for ported System V STREAMS logic or a library that maps an internal stream-pipe condition to Linux errno values. The useful evidence is the abstraction that returned it, not just the numeric errno.

Do not confuse with

EPIPE: write on a pipe or socket whose reader is gone.
ESPIPE: illegal seek on a non-seekable object.
ENOSTR: operation expected a stream but did not receive one.

Linux errno(3) · Linux UAPI errno definitions

Looking for a different code? Search another status or error code.