On 23/10/29 08:49PM, Markus Wichmann wrote: > Am Sun, Oct 29, 2023 at 06:00:18PM +0100 schrieb Страхиња Радић: > > mkdir returning EISDIR is definitely not a part of POSIX.[1] > > > > [1]: > > https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkdir.html#tag_16_325_05 > > That's where you're wrong. Any function can fail for any reason unless > POSIX specifically states "this function shall not fail with...". Only > if the error conditions listed in the definition of the function apply, > they have to return those error codes. Or as XSI chapter 2.3 puts it: > > | Implementations may support additional errors not included in this list, > | may generate errors included in this list under circumstances other than > | those described here, or may contain extensions or limitations that > | prevent some errors from occurring.
Ok, let me rephrase that: mkdir returning EISDIR is definitely not prescribed by POSIX. The possibility of it being returned is not forbidden, but also not explicitly enumerated in POSIX.
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