[DragonFlyBSD - Bug #3282] (Resolved) unexpected errno value from fopen()

[liweitianux]

Issue #3282 has been updated by liweitianux.

Status changed from New to Resolved

Patch merged into master and 6.4 branches. Thank you.

----------------------------------------
Bug #3282: unexpected errno value from fopen()
http://bugs.dragonflybsd.org/issues/3282#change-14770

* Author: bhaible
* Status: Resolved
* Priority: Normal
* Category: Kernel
* Target version: 6.4
* Start date: 2021-06-14
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fopen(".", "w") fails with errno = EEXIST.
Per POSIX https://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html
one would expect one of EISDIR, EINVAL, EACCES.

How to reproduce: Run this program.

<pre>
#include <errno.h>
#include <stdio.h>

int main ()
{
  FILE *fp = fopen (".", "w");
  if (fp == NULL)
    {
      perror ("fopen");
    }
}

</pre>

---Files--------------------------------
sys.kern.vfs_nlookup.c.diff (6.7 KB)


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