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

Mimi Zohar
2019-05-09T15:46:45Z

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@linux.ibm.com>

Reviewed-by:  Mimi Zohar <zohar@linux.ibm.com>

> ---
> 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 {