Re: [PATCH] bsdacct: fix uid/gid misreporting (#14676)

From: Michal Schmidt
Date: Tue Dec 01 2009 - 12:51:33 EST


On Tue, 1 Dec 2009 01:40:32 +0300 Alexey Dobriyan wrote:
> commit d8e180dcd5bbbab9cd3ff2e779efcf70692ef541
> "bsdacct: switch credentials for writing to the accounting file"
> introduced credential switching during final acct data collecting.
> However, uid/gid pair continued to be collected from current which
> became credentials of who created acct file, not who exits.
>
> Fix http://bugzilla.kernel.org/show_bug.cgi?id=14676
>
> Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>

Ah, indeed. The original commit went into 2.6.31-stable so this one
should too.

Reviewed-by: Michal Schmidt <mschmidt@xxxxxxxxxx>

>
> Juho, please, confirm.
>
> kernel/acct.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> --- a/kernel/acct.c
> +++ b/kernel/acct.c
> @@ -536,7 +536,8 @@ static void do_acct_process(struct
> bsd_acct_struct *acct, do_div(elapsed, AHZ);
> ac.ac_btime = get_seconds() - elapsed;
> /* we really need to bite the bullet and change layout */
> - current_uid_gid(&ac.ac_uid, &ac.ac_gid);
> + ac.ac_uid = orig_cred->uid;
> + ac.ac_gid = orig_cred->gid;
> #if ACCT_VERSION==2
> ac.ac_ahz = AHZ;
> #endif

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