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[25/33] ima: use match_string() helper

Message ID 1526903890-35761-26-git-send-email-xieyisheng1@huawei.com (mailing list archive)
State New, archived
Headers show

Commit Message

Xie Yisheng May 21, 2018, 11:58 a.m. UTC
match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-integrity@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
---
 security/integrity/ima/ima_main.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

Comments

Mimi Zohar May 23, 2018, 2:42 p.m. UTC | #1
On Mon, 2018-05-21 at 19:58 +0800, Yisheng Xie wrote:
> match_string() returns the index of an array for a matching string,
> which can be used intead of open coded variant.
> 
> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com>
> Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
> Cc: James Morris <jmorris@namei.org>
> Cc: "Serge E. Hallyn" <serge@hallyn.com>
> Cc: linux-integrity@vger.kernel.org
> Cc: linux-security-module@vger.kernel.org
> Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>

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

> ---
>  security/integrity/ima/ima_main.c | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
> index 74d0bd7..f807093 100644
> --- a/security/integrity/ima/ima_main.c
> +++ b/security/integrity/ima/ima_main.c
> @@ -61,14 +61,11 @@ static int __init hash_setup(char *str)
>  		goto out;
>  	}
> 
> -	for (i = 0; i < HASH_ALGO__LAST; i++) {
> -		if (strcmp(str, hash_algo_name[i]) == 0) {
> -			ima_hash_algo = i;
> -			break;
> -		}
> -	}
> -	if (i == HASH_ALGO__LAST)
> +	i = match_string(hash_algo_name, HASH_ALGO__LAST, str);
> +	if (i < 0)
>  		return 1;
> +
> +	ima_hash_algo = i;
>  out:
>  	hash_setup_done = 1;
>  	return 1;
diff mbox

Patch

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 74d0bd7..f807093 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -61,14 +61,11 @@  static int __init hash_setup(char *str)
 		goto out;
 	}
 
-	for (i = 0; i < HASH_ALGO__LAST; i++) {
-		if (strcmp(str, hash_algo_name[i]) == 0) {
-			ima_hash_algo = i;
-			break;
-		}
-	}
-	if (i == HASH_ALGO__LAST)
+	i = match_string(hash_algo_name, HASH_ALGO__LAST, str);
+	if (i < 0)
 		return 1;
+
+	ima_hash_algo = i;
 out:
 	hash_setup_done = 1;
 	return 1;