On 04/29/16 at 10:04P, Michal Hocko wrote:
> On Fri 29-04-16 13:47:04, Minfei Huang wrote:
> > It's more convenient to use existing function helper to convert string
> > "on/off" to boolean.
>
> But kstrtobool in linux-next only does "This routine returns 0 iff the
> first character is one of 'Yy1Nn0'" so it doesn't know about on/off.
> Or am I missing anything?
Hi, Michal.
Thanks for your reply.
Following is the kstrtobool comment from linus tree, which has explained
that this function can parse "on"/"off" string. Also Kees Cook has
posted such patch to fix this issue as well. So I think it's safe to fix
it.
"
This routine returns 0 if the first character is one of 'Yy1Nn0', or
[oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL. Value
pointed to by res is updated upon finding a match.
"
commit 4cc7ecb7f2a60e8deb783b8fbf7c1ae467acb920
Author: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Thu Mar 17 14:23:00 2016 -0700
param: convert some "on"/"off" users to strtobool
This changes several users of manual "on"/"off" parsing to use
strtobool.
Some side-effects:
- these uses will now parse y/n/1/0 meaningfully too
- the early_param uses will now bubble up parse errors
Thanks
Minfei
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