What does errno 36 (EIDRM) in Solaris mean?

EIDRM

System v ipc object lifetime

EIDRM is Solaris errno 36 (Identifier removed). A Solaris IPC identifier was removed while the caller was using or waiting on it.

The identifier may have been valid when the wait or operation began and then removed by another process. Record IPC object creation and removal together with the failing identifier so stale-handle reuse can be distinguished from normal teardown.

What to check

• Check whether msgctl, semctl, or shmctl removed the object while another process was blocked or still held the identifier.
• Reopen or recreate the IPC object instead of continuing to use the old id.
• Log the IPC key and object id because numeric identifiers can be reused later.

References

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