Re: [PATCH v10 06/12] ima: Use designated initializers for struct ima_event_data

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On Thu, 2019-04-18 at 00:51 -0300, Thiago Jung Bauermann wrote:
> Designated initializers allow specifying only the members of the struct
> that need initialization. Non-mentioned members are initialized to zero.
> 
> This makes the code a bit clearer (particularly in ima_add_boot_aggregate()
> and also allows adding a new member to the struct without having to update
> all struct initializations.
> 
> Signed-off-by: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>

Reviewed-by:  Mimi Zohar <zohar@xxxxxxxxxxxxx>

> ---
>  security/integrity/ima/ima_api.c  | 11 +++++++----
>  security/integrity/ima/ima_init.c |  4 ++--
>  2 files changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
> index c7505fb122d4..0639d0631f2c 100644
> --- a/security/integrity/ima/ima_api.c
> +++ b/security/integrity/ima/ima_api.c
> @@ -133,8 +133,9 @@ void ima_add_violation(struct file *file, const unsigned char *filename,
>  {
>  	struct ima_template_entry *entry;
>  	struct inode *inode = file_inode(file);
> -	struct ima_event_data event_data = {iint, file, filename, NULL, 0,
> -					    cause};
> +	struct ima_event_data event_data = { .iint = iint, .file = file,
> +					     .filename = filename,
> +					     .violation = cause };
>  	int violation = 1;
>  	int result;
>  
> @@ -284,8 +285,10 @@ void ima_store_measurement(struct integrity_iint_cache *iint,
>  	int result = -ENOMEM;
>  	struct inode *inode = file_inode(file);
>  	struct ima_template_entry *entry;
> -	struct ima_event_data event_data = {iint, file, filename, xattr_value,
> -					    xattr_len, NULL};
> +	struct ima_event_data event_data = { .iint = iint, .file = file,
> +					     .filename = filename,
> +					     .xattr_value = xattr_value,
> +					     .xattr_len = xattr_len };
>  	int violation = 0;
>  
>  	if (iint->measured_pcrs & (0x1 << pcr))
> diff --git a/security/integrity/ima/ima_init.c b/security/integrity/ima/ima_init.c
> index 6c9295449751..ef6c3a26296e 100644
> --- a/security/integrity/ima/ima_init.c
> +++ b/security/integrity/ima/ima_init.c
> @@ -49,8 +49,8 @@ static int __init ima_add_boot_aggregate(void)
>  	const char *audit_cause = "ENOMEM";
>  	struct ima_template_entry *entry;
>  	struct integrity_iint_cache tmp_iint, *iint = &tmp_iint;
> -	struct ima_event_data event_data = {iint, NULL, boot_aggregate_name,
> -					    NULL, 0, NULL};
> +	struct ima_event_data event_data = { .iint = iint,
> +					     .filename = boot_aggregate_name };
>  	int result = -ENOMEM;
>  	int violation = 0;
>  	struct {




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