From: Jan Kara <jack@suse.cz>
To: Gabriel Krisman Bertazi <krisman@collabora.com>
Cc: jack@suse.com, amir73il@gmail.com, djwong@kernel.org,
tytso@mit.edu, dhowells@redhat.com, khazhy@google.com,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-api@vger.kernel.org, repnop@google.com,
kernel@collabora.com, Jan Kara <jack@suse.cz>
Subject: Re: [PATCH v7 17/28] fanotify: Reserve UAPI bits for FAN_FS_ERROR
Date: Fri, 15 Oct 2021 11:37:00 +0200 [thread overview]
Message-ID: <20211015093700.GH23102@quack2.suse.cz> (raw)
In-Reply-To: <20211014213646.1139469-18-krisman@collabora.com>
On Thu 14-10-21 18:36:35, Gabriel Krisman Bertazi wrote:
> FAN_FS_ERROR allows reporting of event type FS_ERROR to userspace, which
^^
missing 'is'
> a mechanism to report file system wide problems via fanotify. This
> commit preallocate userspace visible bits to match the FS_ERROR event.
>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Reviewed-by: Amir Goldstein <amir73il@gmail.com>
> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
> ---
> fs/notify/fanotify/fanotify.c | 1 +
> include/uapi/linux/fanotify.h | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
> index c64d61b673ca..8f152445d75c 100644
> --- a/fs/notify/fanotify/fanotify.c
> +++ b/fs/notify/fanotify/fanotify.c
> @@ -752,6 +752,7 @@ static int fanotify_handle_event(struct fsnotify_group *group, u32 mask,
> BUILD_BUG_ON(FAN_ONDIR != FS_ISDIR);
> BUILD_BUG_ON(FAN_OPEN_EXEC != FS_OPEN_EXEC);
> BUILD_BUG_ON(FAN_OPEN_EXEC_PERM != FS_OPEN_EXEC_PERM);
> + BUILD_BUG_ON(FAN_FS_ERROR != FS_ERROR);
>
> BUILD_BUG_ON(HWEIGHT32(ALL_FANOTIFY_EVENT_BITS) != 19);
>
> diff --git a/include/uapi/linux/fanotify.h b/include/uapi/linux/fanotify.h
> index 64553df9d735..2990731ddc8b 100644
> --- a/include/uapi/linux/fanotify.h
> +++ b/include/uapi/linux/fanotify.h
> @@ -20,6 +20,7 @@
> #define FAN_OPEN_EXEC 0x00001000 /* File was opened for exec */
>
> #define FAN_Q_OVERFLOW 0x00004000 /* Event queued overflowed */
> +#define FAN_FS_ERROR 0x00008000 /* Filesystem error */
>
> #define FAN_OPEN_PERM 0x00010000 /* File open in perm check */
> #define FAN_ACCESS_PERM 0x00020000 /* File accessed in perm check */
> --
> 2.33.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
next prev parent reply other threads:[~2021-10-15 9:37 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 21:36 [PATCH v7 00/28] file system-wide error monitoring Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 01/28] fsnotify: pass data_type to fsnotify_name() Gabriel Krisman Bertazi
2021-10-15 9:18 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 02/28] fsnotify: pass dentry instead of inode data Gabriel Krisman Bertazi
2021-10-15 13:39 ` Jan Kara
2021-10-18 9:11 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 03/28] fsnotify: clarify contract for create event hooks Gabriel Krisman Bertazi
2021-10-15 9:21 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 04/28] fsnotify: Don't insert unmergeable events in hashtable Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 05/28] fanotify: Fold event size calculation to its own function Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 06/28] fanotify: Split fsid check from other fid mode checks Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 07/28] inotify: Don't force FS_IN_IGNORED Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 08/28] fsnotify: Add helper to detect overflow_event Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 09/28] fsnotify: Add wrapper around fsnotify_add_event Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 10/28] fsnotify: Retrieve super block from the data field Gabriel Krisman Bertazi
2021-10-15 5:39 ` Amir Goldstein
2021-10-15 9:26 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 11/28] fsnotify: Pass group argument to free_event Gabriel Krisman Bertazi
2021-10-15 5:40 ` Amir Goldstein
2021-10-15 9:26 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 12/28] fanotify: Support null inode event in fanotify_dfid_inode Gabriel Krisman Bertazi
2021-10-15 5:49 ` Amir Goldstein
2021-10-15 9:30 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 13/28] fanotify: Allow file handle encoding for unhashed events Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 14/28] fanotify: Encode empty file handle when no inode is provided Gabriel Krisman Bertazi
2021-10-15 6:02 ` Amir Goldstein
2021-10-15 9:32 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 15/28] fanotify: Require fid_mode for any non-fd event Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 16/28] fsnotify: Support FS_ERROR event type Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 17/28] fanotify: Reserve UAPI bits for FAN_FS_ERROR Gabriel Krisman Bertazi
2021-10-15 9:37 ` Jan Kara [this message]
2021-10-14 21:36 ` [PATCH v7 18/28] fanotify: Pre-allocate pool of error events Gabriel Krisman Bertazi
2021-10-15 6:19 ` Amir Goldstein
2021-10-15 7:33 ` Amir Goldstein
2021-10-15 9:46 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 19/28] fanotify: Limit number of marks with FAN_FS_ERROR per group Gabriel Krisman Bertazi
2021-10-15 6:15 ` Amir Goldstein
2021-10-15 16:53 ` Gabriel Krisman Bertazi
2021-10-15 17:49 ` Amir Goldstein
2021-10-14 21:36 ` [PATCH v7 20/28] fanotify: Support enqueueing of error events Gabriel Krisman Bertazi
2021-10-15 7:04 ` Amir Goldstein
2021-10-15 16:50 ` Gabriel Krisman Bertazi
2021-10-15 12:34 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 21/28] fanotify: Support merging " Gabriel Krisman Bertazi
2021-10-15 7:09 ` Amir Goldstein
2021-10-15 16:54 ` Gabriel Krisman Bertazi
2021-10-15 17:52 ` Amir Goldstein
2021-10-18 13:55 ` Gabriel Krisman Bertazi
2021-10-15 12:43 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 22/28] fanotify: Report FID entry even for zero-length file_handle Gabriel Krisman Bertazi
2021-10-15 8:10 ` Amir Goldstein
2021-10-15 13:13 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 23/28] fanotify: Report fid info for file related file system errors Gabriel Krisman Bertazi
2021-10-15 7:56 ` Amir Goldstein
2021-10-15 13:38 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 24/28] fanotify: Emit generic error info for error event Gabriel Krisman Bertazi
2021-10-15 8:13 ` Amir Goldstein
2021-10-15 12:47 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 25/28] fanotify: Allow users to request FAN_FS_ERROR events Gabriel Krisman Bertazi
2021-10-15 8:27 ` Amir Goldstein
2021-10-15 12:49 ` Jan Kara
2021-10-14 21:36 ` [PATCH v7 26/28] ext4: Send notifications on error Gabriel Krisman Bertazi
2021-10-14 21:59 ` Theodore Ts'o
2021-10-14 21:36 ` [PATCH v7 27/28] samples: Add fs error monitoring example Gabriel Krisman Bertazi
2021-10-14 21:36 ` [PATCH v7 28/28] docs: Document the FAN_FS_ERROR event Gabriel Krisman Bertazi
2021-10-15 8:38 ` [PATCH v7 00/28] file system-wide error monitoring Amir Goldstein
2021-10-15 9:16 ` Jan Kara
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