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Include EINVAL in mkdir(2) man page #6

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ronin13 opened this issue May 4, 2015 · 1 comment

ronin13 commented May 4, 2015

It is possible for mkdir(2) to return EINVAL in certain circumstances. However, the man page mkdir(2) doesn't mention that.

I am hitting it on overlayfs. Other instances reported:

http://stackoverflow.com/questions/10015377/mkdir-pathname-with-symbol
http://lists.opensuse.org/opensuse-bugs/2009-05/msg01771.html
(and many others)

So, it needs to be documented in man page for mkdir(2).

Author

ronin13 commented May 4, 2015

With perf trace, I can confirm (on CentOS 7.1 + overlayfs)

80407.179 ( 0.034 ms): perl/27590 mkdir(pathname: 0x214d6d0, mode: 511                                  ) = 0
 80414.361 ( 0.146 ms): perl/27590 mkdir(pathname: 0x214d6d0, mode: 511                                  ) = -22

-22 being -EINVAL.

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