Re: [PATCH] setsebool: report errors from commit phase

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On Sun, Apr 26, 2020 at 5:21 PM Topi Miettinen <toiwoton@xxxxxxxxx> wrote:
>
> In case there are errors when committing changes to booleans, the
> errors may not be reported to user except by nonzero exit status. With
> "setsebool -V" it's possible to see errors from commit phase, but
> otherwise the unfixed command is silent:
>
>   # setsebool -V -P secure_mode_insmod=off
> libsemanage.semanage_install_final_tmp: Could not copy
> /var/lib/selinux/final/default/contexts/files/file_contexts to
> /etc/selinux/default/contexts/files/file_contexts. (Read-only file system).
> libsemanage.semanage_install_final_tmp: Could not copy
> /var/lib/selinux/final/default/contexts/files/file_contexts to
> /etc/selinux/default/contexts/files/file_contexts. (Read-only file system).
>
> Fixed version alerts the user about problems even without -V:
>   # setsebool -P secure_mode_insmod=off
> Failed to commit changes to booleans: Read-only file system
>
> Signed-off-by: Topi Miettinen <toiwoton@xxxxxxxxx>

Looks good to me. The patch below has been mangled (tabs have been
replaced by spaces) but I took the patch from your Pull Request
(https://github.com/SELinuxProject/selinux/pull/227.patch) and it
applied cleanly.

Acked-by: Nicolas Iooss <nicolas.iooss@xxxxxxx>

If nobody raises an objection, I will merge the patch tomorrow.

Thanks,
Nicolas

> ---
>   policycoreutils/setsebool/setsebool.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/policycoreutils/setsebool/setsebool.c
> b/policycoreutils/setsebool/setsebool.c
> index 9d8abfac..60da5df1 100644
> --- a/policycoreutils/setsebool/setsebool.c
> +++ b/policycoreutils/setsebool/setsebool.c
> @@ -200,8 +200,10 @@ static int semanage_set_boolean_list(size_t boolcnt,
>
>          if (no_reload)
>                  semanage_set_reload(handle, 0);
> -       if (semanage_commit(handle) < 0)
> +       if (semanage_commit(handle) < 0) {
> +               fprintf(stderr, "Failed to commit changes to booleans:
> %m\n");
>                  goto err;
> +       }
>
>          semanage_disconnect(handle);
>          semanage_handle_destroy(handle);
> --
> 2.26.2




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