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

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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@xxxxxxxxxxxxxxxxxx>
Cc: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
Cc: James Morris <jmorris@xxxxxxxxx>
Cc: "Serge E. Hallyn" <serge@xxxxxxxxxx>
Cc: linux-integrity@xxxxxxxxxxxxxxx
Cc: linux-security-module@xxxxxxxxxxxxxxx
Signed-off-by: Yisheng Xie <xieyisheng1@xxxxxxxxxx>
---
 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;
-- 
1.7.12.4




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