[lkml]   [2018]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 05/21] kconfig: remove string expansion in file_lookup()
On Mon, Mar 26, 2018 at 10:29 PM, Masahiro Yamada
<> wrote:
> There are two callers of file_lookup().
> [1] zconf_initscan()
> This is used to open the first Kconfig. However, it cannot
> contain environments in the file path because zconf_fopen() is
> called before file_lookup(). By swapping the call order,
> KBUILD_KCONFIG would be able to contain environments, but I do
> not see practical benefits to support it.
> [2] zconf_nextfile()
> This is used to open the next file from 'source' statement like
> source "arch/$SRCARCH/Kconfig"
> but this has already been expanded in the lexer phase.
> So, file_lookup() does not need to expand the given path.
> By the way, file_lookup() was already buggy; it expanded a given path,
> but it used the path before expansion for look-up:
> if (!strcmp(name, file->name)) {
> Signed-off-by: Masahiro Yamada <>

Reviewed-by: Kees Cook <>


Kees Cook
Pixel Security

 \ /
  Last update: 2018-03-28 05:37    [W:0.424 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site