bugfindutils - Bugs: bug #54263, find -L treats ENOENT and ENOTDIR...

 
 

bug #54263: find -L treats ENOENT and ENOTDIR differently

Submitted by:  Tavian Barnes <tavianator>
Submitted on:  Sat 07 Jul 2018 07:39:49 PM UTC
 
Category:  find Severity:  3 - Normal
Item Group:  Wrong result Status:  None
Privacy:  Public Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  4.6.0 Fixed Release:  None
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Tue 18 Sep 2018 03:04:44 PM UTC, comment #2: 

> find -L . -type l prints a list of symbolic links reachable from the current directory that do not resolve to accessible files.


Hmm.  I never considered this before, but does the use of "accessible" here imply that EACCES should also count?

Tavian Barnes <tavianator>
Sat 28 Jul 2018 05:11:59 PM UTC, comment #1: 

Reading the specification again:

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/find.html

-L   [...].  If the referenced file does not exist, the file information
     and type shall be for the link itself.

This means that an error should not be thrown for broken links (well, probably
only for primitives that require the symlink to be resolved like '-printf %Y').

And later on:

Since the -L option resolves all symbolic links and the -type l primary
is true for symbolic links that still exist after symbolic links have
been resolved, the command:

  find -L . -type l

prints a list of symbolic links reachable from the current directory
that do not resolve to accessible files.

The spec does not differentiate between ENOENT and ENOTDIR here.
So the current behavior seems to be debatable, at least.
I have to think about this ...

Bernhard Voelker <berny>
Project Administrator
Sat 07 Jul 2018 07:39:49 PM UTC, original submission:  

$ touch file
$ ln -s nowhere broken
$ ln -s file/nowhere notdir
$ find -L
.
./file
./broken
find: ‘./notdir’: Not a directory
./notdir

So we get an error message if a link is broken in one way but not another.  Worse,

$ find -L broken
broken
$ find -L notdir
find: ‘notdir’: Not a directory

So at the top level, notdir is not even printed.  Same with -H.

Tavian Barnes <tavianator>

 

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