What does errno 67 (ENOLINK) mean?

ENOLINK

ENOLINK is Solaris errno value 67, Link has been severed. Oracle defines the condition for a file operation on a remote machine when the link to that machine is no longer active. The link is a remote-resource connection, not a Unix hard link or symbolic link in the pathname.

Locate the remote filesystem boundary

Identify the file or directory used by the failing operation and determine which mounted or compatibility filesystem supplies it. Then correlate the failure with the remote service and the transport or session that maintains access to that resource. Local permission changes and symbolic-link repairs are unrelated unless they also change which remote object is being accessed.

Older Solaris documentation places this errno among Remote File System and distributed-resource conditions. Modern network filesystems can expose different, protocol-specific errors, so seeing this result in a ported application is also a reason to check for an RFS-era compatibility layer or errno translation. ECOMM emphasizes a remote-file operation that lost communication; it names the inactive remote link itself.

References

• Oracle Solaris intro(2): ENOLINK
• illumos errno.h
• POSIX errno definitions

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