What does errno 93 (ENOTEMPTY) in Solaris mean?

ENOTEMPTY

Non-empty directory operation

ENOTEMPTY is Solaris errno 93 (directory not empty). Solaris refused to remove or rename a directory because it still contains entries.

Enumerate the directory immediately before the failing removal or rename, including hidden entries created by another process. If the tree is concurrently modified, record the creator rather than placing the remove call in an unbounded retry loop.

What to check

• List hidden entries as well as visible names.
• Check for concurrent creators in the same directory.
• Do not treat this errno as a permission error.

References

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