From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Eric Biggers <ebiggers@kernel.org>
Cc: linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-mtd@lists.infradead.org, linux-api@vger.kernel.org,
linux-crypto@vger.kernel.org, keyrings@vger.kernel.org,
Paul Crowley <paulcrowley@google.com>,
Satya Tangirala <satyat@google.com>
Subject: Re: [PATCH v7 07/16] fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl
Date: Sun, 28 Jul 2019 15:24:17 -0400 [thread overview]
Message-ID: <20190728192417.GG6088@mit.edu> (raw)
In-Reply-To: <20190726224141.14044-8-ebiggers@kernel.org>
On Fri, Jul 26, 2019 at 03:41:32PM -0700, Eric Biggers wrote:
> + fscrypt_warn(NULL,
> + "%s: %zu inodes still busy after removing key with description %*phN, including ino %lu (%s)",
nit: s/inodes/inode(s)/
> +
> +/*
> + * Try to remove an fscrypt master encryption key. If other users have also
> + * added the key, we'll remove the current user's usage of the key, then return
> + * -EUSERS. Otherwise we'll continue on and try to actually remove the key.
Nit: this should be moved to patch #11
Also, perror(EUSERS) will display "Too many users" which is going to
be confusing. I understand why you chose this; we would like to
distinguish between there are still inodes using this key, and there
are other users using this key.
Do we really need to return EUSERS in this case? It's actually not an
*error* that other users are using the key. After all, the unlink(2)
system call doesn't return an advisory error when you delete a file
which has other hard links. And an application which does care about
this detail can always call FS_IOC_ENCRYPTION_KEY_STATUS() and check
user_count.
Other than these nits, looks good. Feel free to add:
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
- Ted
WARNING: multiple messages have this Message-ID (diff)
From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Satya Tangirala <satyat@google.com>,
linux-api@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-fscrypt@vger.kernel.org, keyrings@vger.kernel.org,
linux-mtd@lists.infradead.org, linux-crypto@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Paul Crowley <paulcrowley@google.com>
Subject: Re: [PATCH v7 07/16] fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl
Date: Sun, 28 Jul 2019 19:24:17 +0000 [thread overview]
Message-ID: <20190728192417.GG6088@mit.edu> (raw)
In-Reply-To: <20190726224141.14044-8-ebiggers@kernel.org>
On Fri, Jul 26, 2019 at 03:41:32PM -0700, Eric Biggers wrote:
> + fscrypt_warn(NULL,
> + "%s: %zu inodes still busy after removing key with description %*phN, including ino %lu (%s)",
nit: s/inodes/inode(s)/
> +
> +/*
> + * Try to remove an fscrypt master encryption key. If other users have also
> + * added the key, we'll remove the current user's usage of the key, then return
> + * -EUSERS. Otherwise we'll continue on and try to actually remove the key.
Nit: this should be moved to patch #11
Also, perror(EUSERS) will display "Too many users" which is going to
be confusing. I understand why you chose this; we would like to
distinguish between there are still inodes using this key, and there
are other users using this key.
Do we really need to return EUSERS in this case? It's actually not an
*error* that other users are using the key. After all, the unlink(2)
system call doesn't return an advisory error when you delete a file
which has other hard links. And an application which does care about
this detail can always call FS_IOC_ENCRYPTION_KEY_STATUS() and check
user_count.
Other than these nits, looks good. Feel free to add:
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
- Ted
WARNING: multiple messages have this Message-ID (diff)
From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Satya Tangirala <satyat@google.com>,
linux-api@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-fscrypt@vger.kernel.org, keyrings@vger.kernel.org,
linux-mtd@lists.infradead.org, linux-crypto@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Paul Crowley <paulcrowley@google.com>
Subject: Re: [PATCH v7 07/16] fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl
Date: Sun, 28 Jul 2019 15:24:17 -0400 [thread overview]
Message-ID: <20190728192417.GG6088@mit.edu> (raw)
In-Reply-To: <20190726224141.14044-8-ebiggers@kernel.org>
On Fri, Jul 26, 2019 at 03:41:32PM -0700, Eric Biggers wrote:
> + fscrypt_warn(NULL,
> + "%s: %zu inodes still busy after removing key with description %*phN, including ino %lu (%s)",
nit: s/inodes/inode(s)/
> +
> +/*
> + * Try to remove an fscrypt master encryption key. If other users have also
> + * added the key, we'll remove the current user's usage of the key, then return
> + * -EUSERS. Otherwise we'll continue on and try to actually remove the key.
Nit: this should be moved to patch #11
Also, perror(EUSERS) will display "Too many users" which is going to
be confusing. I understand why you chose this; we would like to
distinguish between there are still inodes using this key, and there
are other users using this key.
Do we really need to return EUSERS in this case? It's actually not an
*error* that other users are using the key. After all, the unlink(2)
system call doesn't return an advisory error when you delete a file
which has other hard links. And an application which does care about
this detail can always call FS_IOC_ENCRYPTION_KEY_STATUS() and check
user_count.
Other than these nits, looks good. Feel free to add:
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
- Ted
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Satya Tangirala <satyat@google.com>,
linux-api@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-fscrypt@vger.kernel.org, keyrings@vger.kernel.org,
linux-mtd@lists.infradead.org, linux-crypto@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Paul Crowley <paulcrowley@google.com>
Subject: Re: [f2fs-dev] [PATCH v7 07/16] fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl
Date: Sun, 28 Jul 2019 15:24:17 -0400 [thread overview]
Message-ID: <20190728192417.GG6088@mit.edu> (raw)
In-Reply-To: <20190726224141.14044-8-ebiggers@kernel.org>
On Fri, Jul 26, 2019 at 03:41:32PM -0700, Eric Biggers wrote:
> + fscrypt_warn(NULL,
> + "%s: %zu inodes still busy after removing key with description %*phN, including ino %lu (%s)",
nit: s/inodes/inode(s)/
> +
> +/*
> + * Try to remove an fscrypt master encryption key. If other users have also
> + * added the key, we'll remove the current user's usage of the key, then return
> + * -EUSERS. Otherwise we'll continue on and try to actually remove the key.
Nit: this should be moved to patch #11
Also, perror(EUSERS) will display "Too many users" which is going to
be confusing. I understand why you chose this; we would like to
distinguish between there are still inodes using this key, and there
are other users using this key.
Do we really need to return EUSERS in this case? It's actually not an
*error* that other users are using the key. After all, the unlink(2)
system call doesn't return an advisory error when you delete a file
which has other hard links. And an application which does care about
this detail can always call FS_IOC_ENCRYPTION_KEY_STATUS() and check
user_count.
Other than these nits, looks good. Feel free to add:
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
- Ted
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
next prev parent reply other threads:[~2019-07-28 19:24 UTC|newest]
Thread overview: 230+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-26 22:41 [PATCH v7 00/16] fscrypt: key management improvements Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-26 22:41 ` [PATCH v7 01/16] fs, fscrypt: move uapi definitions to new header <linux/fscrypt.h> Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 15:08 ` Theodore Y. Ts'o
2019-07-28 15:08 ` Theodore Y. Ts'o
2019-07-28 15:08 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 15:08 ` Theodore Y. Ts'o
2019-07-28 15:08 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 02/16] fscrypt: use FSCRYPT_ prefix for uapi constants Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-26 22:41 ` [PATCH v7 03/16] fscrypt: use FSCRYPT_* definitions, not FS_* Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-26 22:41 ` [PATCH v7 04/16] fscrypt: add ->ci_inode to fscrypt_info Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 15:09 ` Theodore Y. Ts'o
2019-07-28 15:09 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 15:09 ` Theodore Y. Ts'o
2019-07-28 15:09 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 05/16] fscrypt: refactor v1 policy key setup into keysetup_legacy.c Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 15:40 ` Theodore Y. Ts'o
2019-07-28 15:40 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 15:40 ` Theodore Y. Ts'o
2019-07-28 15:40 ` Theodore Y. Ts'o
2019-07-29 19:37 ` Eric Biggers
2019-07-29 19:37 ` Eric Biggers
2019-07-29 19:37 ` Eric Biggers
2019-07-29 19:37 ` [f2fs-dev] " Eric Biggers
2019-07-26 22:41 ` [PATCH v7 06/16] fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 18:50 ` Theodore Y. Ts'o
2019-07-28 18:50 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 18:50 ` Theodore Y. Ts'o
2019-07-28 18:50 ` Theodore Y. Ts'o
2019-07-29 19:46 ` Eric Biggers
2019-07-29 19:46 ` Eric Biggers
2019-07-29 19:46 ` Eric Biggers
2019-07-29 19:46 ` Eric Biggers
2019-07-29 19:46 ` [f2fs-dev] " Eric Biggers
2019-07-29 20:14 ` Theodore Y. Ts'o
2019-07-29 20:14 ` Theodore Y. Ts'o
2019-07-29 20:14 ` Theodore Y. Ts'o
2019-07-29 20:14 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 07/16] fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 19:24 ` Theodore Y. Ts'o [this message]
2019-07-28 19:24 ` Theodore Y. Ts'o
2019-07-28 19:24 ` Theodore Y. Ts'o
2019-07-28 19:24 ` Theodore Y. Ts'o
2019-07-29 19:58 ` Eric Biggers
2019-07-29 19:58 ` Eric Biggers
2019-07-29 19:58 ` Eric Biggers
2019-07-29 19:58 ` Eric Biggers
2019-07-29 19:58 ` [f2fs-dev] " Eric Biggers
2019-07-31 18:38 ` Eric Biggers
2019-07-31 18:38 ` Eric Biggers
2019-07-31 18:38 ` Eric Biggers
2019-07-31 18:38 ` [f2fs-dev] " Eric Biggers
2019-07-31 23:38 ` Theodore Y. Ts'o
2019-07-31 23:38 ` Theodore Y. Ts'o
2019-07-31 23:38 ` Theodore Y. Ts'o
2019-07-31 23:38 ` [f2fs-dev] " Theodore Y. Ts'o
2019-08-01 1:11 ` Eric Biggers
2019-08-01 1:11 ` Eric Biggers
2019-08-01 1:11 ` Eric Biggers
2019-08-01 1:11 ` [f2fs-dev] " Eric Biggers
2019-08-01 1:11 ` Eric Biggers
2019-08-01 5:31 ` Theodore Y. Ts'o
2019-08-01 5:31 ` Theodore Y. Ts'o
2019-08-01 5:31 ` Theodore Y. Ts'o
2019-08-01 5:31 ` Theodore Y. Ts'o
2019-08-01 18:35 ` Eric Biggers
2019-08-01 18:35 ` Eric Biggers
2019-08-01 18:35 ` Eric Biggers
2019-08-01 18:35 ` Eric Biggers
2019-08-01 18:35 ` [f2fs-dev] " Eric Biggers
2019-08-01 18:46 ` Eric Biggers
2019-08-01 18:46 ` Eric Biggers
2019-08-01 18:46 ` Eric Biggers
2019-08-01 18:46 ` [f2fs-dev] " Eric Biggers
2019-08-01 22:04 ` Eric Biggers
2019-08-01 22:04 ` Eric Biggers
2019-08-01 22:04 ` Eric Biggers
2019-08-01 22:04 ` [f2fs-dev] " Eric Biggers
2019-08-02 4:38 ` Eric Biggers
2019-08-02 4:38 ` Eric Biggers
2019-08-02 4:38 ` Eric Biggers
2019-08-02 4:38 ` [f2fs-dev] " Eric Biggers
2019-08-12 14:16 ` Theodore Y. Ts'o
2019-08-12 14:16 ` Theodore Y. Ts'o
2019-08-12 14:16 ` [f2fs-dev] " Theodore Y. Ts'o
2019-08-12 14:16 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 08/16] fscrypt: add FS_IOC_GET_ENCRYPTION_KEY_STATUS ioctl Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 19:30 ` Theodore Y. Ts'o
2019-07-28 19:30 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 19:30 ` Theodore Y. Ts'o
2019-07-28 19:30 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 09/16] fscrypt: add an HKDF-SHA512 implementation Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 19:39 ` Theodore Y. Ts'o
2019-07-28 19:39 ` Theodore Y. Ts'o
2019-07-28 19:39 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 19:39 ` Theodore Y. Ts'o
2019-07-28 19:39 ` Theodore Y. Ts'o
2019-07-29 20:29 ` Eric Biggers
2019-07-29 20:29 ` [f2fs-dev] " Eric Biggers
2019-07-29 20:29 ` Eric Biggers
2019-07-29 20:29 ` Eric Biggers
2019-07-29 21:42 ` James Bottomley
2019-07-29 21:42 ` [f2fs-dev] " James Bottomley
2019-07-29 21:42 ` James Bottomley
2019-07-29 21:42 ` James Bottomley
2019-07-26 22:41 ` [PATCH v7 10/16] fscrypt: v2 encryption policy support Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 21:17 ` Theodore Y. Ts'o
2019-07-28 21:17 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 21:17 ` Theodore Y. Ts'o
2019-07-28 21:17 ` Theodore Y. Ts'o
2019-07-29 20:46 ` Eric Biggers
2019-07-29 20:46 ` [f2fs-dev] " Eric Biggers
2019-07-29 20:46 ` Eric Biggers
2019-07-29 20:46 ` Eric Biggers
2019-07-26 22:41 ` [PATCH v7 11/16] fscrypt: allow unprivileged users to add/remove keys for v2 policies Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 21:22 ` Theodore Y. Ts'o
2019-07-28 21:22 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 21:22 ` Theodore Y. Ts'o
2019-07-28 21:22 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 12/16] fscrypt: require that key be added when setting a v2 encryption policy Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-28 21:24 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 13/16] ext4: wire up new fscrypt ioctls Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-28 21:24 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-28 21:24 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 14/16] f2fs: " Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-30 0:36 ` Jaegeuk Kim
2019-07-30 0:36 ` [f2fs-dev] " Jaegeuk Kim
2019-07-30 0:36 ` Jaegeuk Kim
2019-07-30 0:36 ` Jaegeuk Kim
2019-08-02 8:10 ` Chao Yu
2019-08-02 8:10 ` Chao Yu
2019-08-02 8:10 ` [f2fs-dev] " Chao Yu
2019-08-02 8:10 ` Chao Yu
2019-08-02 8:10 ` Chao Yu
2019-08-02 8:10 ` Chao Yu
2019-08-02 17:31 ` Eric Biggers
2019-08-02 17:31 ` Eric Biggers
2019-08-02 17:31 ` Eric Biggers
2019-08-02 17:31 ` [f2fs-dev] " Eric Biggers
2019-08-04 9:42 ` Chao Yu
2019-08-04 9:42 ` Chao Yu
2019-08-04 9:42 ` Chao Yu
2019-08-04 9:42 ` Chao Yu
2019-08-04 9:42 ` [f2fs-dev] " Chao Yu
2019-07-26 22:41 ` [PATCH v7 15/16] ubifs: " Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-30 0:39 ` Theodore Y. Ts'o
2019-07-30 0:39 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-30 0:39 ` Theodore Y. Ts'o
2019-07-30 0:39 ` Theodore Y. Ts'o
2019-07-26 22:41 ` [PATCH v7 16/16] fscrypt: document the new ioctls and policy version Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` Eric Biggers
2019-07-26 22:41 ` [f2fs-dev] " Eric Biggers
2019-07-29 2:00 ` Theodore Y. Ts'o
2019-07-29 2:00 ` Theodore Y. Ts'o
2019-07-29 2:00 ` [f2fs-dev] " Theodore Y. Ts'o
2019-07-29 2:00 ` Theodore Y. Ts'o
2019-07-29 2:00 ` Theodore Y. Ts'o
2019-07-29 21:36 ` Eric Biggers
2019-07-29 21:36 ` Eric Biggers
2019-07-29 21:36 ` Eric Biggers
2019-07-29 21:36 ` [f2fs-dev] " Eric Biggers
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