linux-ext4 - [RFC PATCH 4/5] fscrypt: remove user-triggerable warning messages

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Message-Id: <1480965168-38747-5-git-send-email-ebiggers@google.com>
Date:   Mon,  5 Dec 2016 11:12:47 -0800
From:   Eric Biggers <ebiggers@...gle.com>
To:     linux-fsdevel@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Richard Weinberger <richard@....at>,
        David Gstir <david@...ma-star.at>,
        Eric Biggers <ebiggers@...gle.com>
Subject: [RFC PATCH 4/5] fscrypt: remove user-triggerable warning messages

Several warning messages were not rate limited and were user-triggerable
from FS_IOC_SET_ENCRYPTION_POLICY.  These shouldn't really have been
there in the first place, but either way they aren't as useful now that
the error codes have been improved.  So just remove them.

Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/crypto/policy.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c
index 4811539..a9f11b3 100644
--- a/fs/crypto/policy.c
+++ b/fs/crypto/policy.c
@@ -66,20 +66,12 @@ static int create_encryption_context_from_policy(struct inode *inode,
 					FS_KEY_DESCRIPTOR_SIZE);
 
 	if (!fscrypt_valid_contents_enc_mode(
-				policy->contents_encryption_mode)) {
-		printk(KERN_WARNING
-		       "%s: Invalid contents encryption mode %d\n", __func__,
-			policy->contents_encryption_mode);
+				policy->contents_encryption_mode))
 		return -EINVAL;
-	}
 
 	if (!fscrypt_valid_filenames_enc_mode(
-				policy->filenames_encryption_mode)) {
-		printk(KERN_WARNING
-			"%s: Invalid filenames encryption mode %d\n", __func__,
-			policy->filenames_encryption_mode);
+				policy->filenames_encryption_mode))
 		return -EINVAL;
-	}
 
 	if (policy->flags & ~FS_POLICY_FLAGS_VALID)
 		return -EINVAL;
@@ -126,9 +118,6 @@ int fscrypt_ioctl_set_policy(struct file *filp, const void __user *arg)
 								    &policy);
 	} else if (!is_encryption_context_consistent_with_policy(inode,
 								 &policy)) {
-		printk(KERN_WARNING
-		       "%s: Policy inconsistent with encryption context\n",
-		       __func__);
 		ret = -EEXIST;
 	}
 
-- 
2.8.0.rc3.226.g39d4020

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