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List: busybox
Subject: Re: busybox su does not update $USER and $LOGNAME
From: Denys Vlasenko <vda.linux () googlemail ! com>
Date: 2009-05-27 22:39:48
Message-ID: 200905280039.48437.vda.linux () googlemail ! com
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On Wednesday 27 May 2009 18:29, Pascal Bellard wrote:
> busybox su does not update $USER and $LOGNAME.
>
> The fix:
> http://hg.slitaz.org/wok/rawfile/tip/busybox/stuff/busybox-1.12.0-su.u
>
> --- busybox-1.12.0/libbb/setup_environment.c
> +++ busybox-1.12.0/libbb/setup_environment.c
> @@ -59,7 +59,7 @@
> else if (change_env) {
> /* Set HOME, SHELL, and if not becoming a super-user,
> USER and LOGNAME. */
> - if (pw->pw_uid) {
> + if (!pw->pw_uid) {
> shortcut:
> xsetenv("USER", pw->pw_name);
> xsetenv("LOGNAME", pw->pw_name);
But, Pascal, the comment says that this is intended.
$USER and $LOGNAME are set if we su'ing to non-root,
IOW, if pw->pw_uid != 0. That's what code does.
Is comment wrong too? Which version of su is known to
do it differently?
--
vda
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