[Bug 262038] fts: Check for readdir errors

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262038

            Bug ID: 262038
           Summary: fts: Check for readdir errors
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: martymac@FreeBSD.org

Created attachment 231923
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=231923&action=edit
Check for readdir errors

Hello,

Here is a patch originally reported by Amir Goldstein to one of my projects
(fpart), which embeds our version of fts(3). See :

https://github.com/martymac/fpart/pull/37/commits/dec9d40d9b4b9551791d61a15442aab8537a26f4

The patch fixes the fact that the fts_build() function does not check for
readdir(3) errors and erroneously assumes it always succeeds.

The same bug has already been fixed in gnulib, see :

https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=6835fc458f30

The attached patch applies to latest -CURRENT.

Best regards,

Ganael.

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