[Pkg-shadow-devel] Newuidmap works with usernames instead of uids

Nicolas François nicolas.francois at centraliens.net
Fri Sep 5 00:24:19 UTC 2014

Hi Bostjan,

On Fri, Sep 05, 2014 at 01:13:35AM +0200, bostjan at a2o.si wrote:
> I forgot to push it earlier, pardon, here it is:
> New, updated commit is here (cherry-picked the old commit and --amend -ed
> it with your updates, to provide a clean one for you):
> https://github.com/bostjan/shadow/commit/63f1cff362d349615e5fa4da9afb6739b6273887
> I created new branch for this one, for you to merge one single commig:
> https://github.com/bostjan/shadow/commits/feature/subuidgid-numeric-v2

My 2c:
Do you need to include <grp.h>?

You could avoid the getpwnam_r call (and malloc, sysconf) by calling
getpwnam. You just need to store owner_pwd.pw_uid before you enter the
This would also avoid the call to exit(), which IMO should be avoided in
commonio.c (better return an error code and let the applications deal with
the error - this can let them release a lock for example).

I'm not sure regarding the guarantees you have on the size of pw_uid.
I would recommend:
	sprintf(owner_uid_string, "%lu", (unsigned long int)owner_pwd.pw_uid);

This is rather cosmetic, but 
			if (!range_owner_pwd) {
could be changed to:
			if (NULL == range_owner_pwd) {

Kind Regards,

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