Description
unlink is as specified in
ISO POSIX (2003),
but with differences as listed below.
See also Additional behaviors: unlink/link on directory.
May return EISDIR on directories
If path specifies a directory, the implementation may return EISDIR instead of EPERM as specified by ISO POSIX (2003).
 | Rationale |
|---|---|
The Linux kernel has deliberately chosen EISDIR for this case and does not expect to change (Al Viro, personal communication). |