Re: [gentoo-portage-dev] [PATCH] ro_checker: skip parents of EPREFIX dir (bug 544624)

[Brian Dolbec <dolsen@gentoo.org>]

On Sun,  5 Apr 2015 21:28:07 -0700
Zac Medico <zmedico@gentoo.org> wrote:

> The ro_checker code added in commit
> 47ef9a0969474f963dc8e52bfbbb8bc075e8d73c incorrectly asserts that the
> parent directories of EPREFIX be writable. Fix it to skip the parents,
> since they are irrelevant. This does not affect the case where EPREFIX
> is empty, since all directories are checked in that case.
> 
> Fixes 47ef9a096947: ("Test for read-only filesystems, fixes bug
> 378869") X-Gentoo-Bug: 544624
> X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=544624
> ---
>  pym/portage/dbapi/vartree.py | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/pym/portage/dbapi/vartree.py
> b/pym/portage/dbapi/vartree.py index 277c2f1..1c0deab 100644
> --- a/pym/portage/dbapi/vartree.py
> +++ b/pym/portage/dbapi/vartree.py
> @@ -3751,6 +3751,7 @@ class dblink(object):
>  		line_ending_re = re.compile('[\n\r]')
>  		srcroot_len = len(srcroot)
>  		ed_len = len(self.settings["ED"])
> +		eprefix_len = len(self.settings["EPREFIX"])
>  
>  		while True:
>  
> @@ -3792,7 +3793,11 @@ class dblink(object):
>  					break
>  
>  				relative_path = parent[srcroot_len:]
> -
> dirlist.append(os.path.join(destroot, relative_path))
> +				if len(relative_path) >= eprefix_len:
> +					# Files are never installed
> outside of the prefix,
> +					# therefore we skip the
> readonly filesystem check for
> +					# parent directories of the
> prefix (see bug 544624).
> +
> dirlist.append(os.path.join(destroot, relative_path)) 
>  				for fname in files:
>  					try:

LGTM

-- 
Brian Dolbec <dolsen>