[Buildroot] [PATCH 1/1] scripts/mkusers: allow users with no password value set
Yann E. MORIN
yann.morin.1998 at free.fr
Sat May 23 09:23:19 UTC 2015
James, All,
On 2015-05-22 11:36 -0400, James Knight spake thusly:
> The following allows a user definition to specify that a created user
> entry should not have a password value set. Original implementation
> allowed a user definition to provide a password value of "-" (no quotes)
> to generate a crypt-encoded empty string value. In some cases, it may be
> desired to have no value specified for a user's password. By using a
> value "-" for a password, no value will be set in the shadow value.
Well, that commit log was not completely explicit about what the goal
was. What about something like:
Currently, it is not possible to create a password-less user, i.e. a
user that can log without providing a password. All we can do is
create a user with an empty password, but a pasword nonetheless.
Accept '-' as the password field, meaning that no password is set,
which allows a user to log in by just providing is login, and no
password will even be asked.
If you have yet a better explanation, go for it! ;-)
> Signed-off-by: James Knight <james.knight at rockwellcollins.com>
With the commit log more explicit, you can add:
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Thanks! :-)
Regards,
Yann E. MORIN.
> ---
> docs/manual/makeusers-syntax.txt | 3 ++-
> support/scripts/mkusers | 3 +++
> 2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/docs/manual/makeusers-syntax.txt b/docs/manual/makeusers-syntax.txt
> index ffdb961..467e596 100644
> --- a/docs/manual/makeusers-syntax.txt
> +++ b/docs/manual/makeusers-syntax.txt
> @@ -31,7 +31,8 @@ Where:
> then login is disabled. If prefixed with +=+, then it is interpreted
> as clear-text, and will be crypt-encoded (using MD5). If prefixed with
> +!=+, then the password will be crypt-encoded (using MD5) and login
> - will be disabled. If set to +*+, then login is not allowed.
> + will be disabled. If set to +*+, then login is not allowed. If set to
> + +-+, then no password value will be set.
> - +home+ is the desired home directory for the user. If set to '-', no
> home directory will be created, and the user's home will be +/+.
> Explicitly setting +home+ to +/+ is not allowed.
> diff --git a/support/scripts/mkusers b/support/scripts/mkusers
> index 026519e..9c5c4dc 100755
> --- a/support/scripts/mkusers
> +++ b/support/scripts/mkusers
> @@ -318,6 +318,9 @@ add_one_user() {
> *) fail "home must be an absolute path\n";;
> esac
> case "${passwd}" in
> + -)
> + _passwd=""
> + ;;
> !=*)
> _passwd='!'"$( encode_password "${passwd#!=}" )"
> ;;
> --
> 1.9.5.msysgit.1
>
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> http://lists.busybox.net/mailman/listinfo/buildroot
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