[PATCH v2] ima: log message to module appraisal error

[Joe Perches]

On Mon, 2017-12-04 at 18:23 -0200, Bruno E. O. Meneguele wrote:
> Simple but useful message log to the user in case of module appraise is
> forced and fails due to the lack of file descriptor, that might be
> caused by kmod calls to compressed modules.
[]
> diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
[]
> @@ -366,8 +366,12 @@ int ima_read_file(struct file *file, enum kernel_read_file_id read_id)
>  
>  	if (!file && read_id == READING_MODULE) {
>  		if (!sig_enforce && (ima_appraise & IMA_APPRAISE_MODULES) &&
> -		    (ima_appraise & IMA_APPRAISE_ENFORCE))
> +		    (ima_appraise & IMA_APPRAISE_ENFORCE)) {
> +			pr_err("impossible to appraise a module without a file \
> +			       descriptor. sig_enforce kernel parameter might \
> +			       help\n");
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

You should probably use scripts/checkpatch.pl on your proposed
patches
before sending them.

You've got a lot of tabs and spaces after every line continuation.
Please coalesce the format on a single line and avoid this defect.

			pr_err("impossible to appraise a module without a file descriptor. sig_enforce kernel parameter might help\n");

cheers, Joe
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