Re: [Qemu-devel] git master build failure in 9pfs

[Eric Blake]

On 03/03/2017 12:15 PM, Greg Kurz wrote:

> 
> O_PATH | O_NOFOLLOW is a special case as described in the last paragraph
> of O_PATH in the man page:
> 
>               If  pathname  is a symbolic link and the O_NOFOLLOW flag is also
>               specified, then the call returns a file descriptor referring  to
>               the  symbolic  link.   This  file  descriptor can be used as the
>               dirfd argument in calls to fchownat(2),  fstatat(2),  linkat(2),
>               and readlinkat(2) with an empty pathname to have the calls oper‐
>               ate on the symbolic link.

Only when coupled with AT_EMPTY_PATHNAME.  Without that additional flag,
then it must be a directory.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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