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From: Amir Goldstein <amir73il@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: Matthew Bobrowski <mbobrowski@mbobrowski.org>,
	linux-fsdevel@vger.kernel.org, Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH v5 11/17] vfs: add vfs_get_fsid() helper
Date: Thu, 10 Jan 2019 19:04:38 +0200	[thread overview]
Message-ID: <20190110170444.30616-12-amir73il@gmail.com> (raw)
In-Reply-To: <20190110170444.30616-1-amir73il@gmail.com>

Wrapper around statfs() interface.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 fs/statfs.c            | 14 ++++++++++++++
 include/linux/statfs.h |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/fs/statfs.c b/fs/statfs.c
index f0216629621d..eea7af6f2f22 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -67,6 +67,20 @@ static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf)
 	return retval;
 }
 
+int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid)
+{
+	struct kstatfs st;
+	int error;
+
+	error = statfs_by_dentry(dentry, &st);
+	if (error)
+		return error;
+
+	*fsid = st.f_fsid;
+	return 0;
+}
+EXPORT_SYMBOL(vfs_get_fsid);
+
 int vfs_statfs(const struct path *path, struct kstatfs *buf)
 {
 	int error;
diff --git a/include/linux/statfs.h b/include/linux/statfs.h
index 3142e98546ac..9bc69edb8f18 100644
--- a/include/linux/statfs.h
+++ b/include/linux/statfs.h
@@ -41,4 +41,7 @@ struct kstatfs {
 #define ST_NODIRATIME	0x0800	/* do not update directory access times */
 #define ST_RELATIME	0x1000	/* update atime relative to mtime/ctime */
 
+struct dentry;
+extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);
+
 #endif
-- 
2.17.1


  parent reply	other threads:[~2019-01-10 17:05 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-10 17:04 [PATCH v5 00/17] fanotify: add support for more event types Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 01/17] fsnotify: annotate directory entry modification events Amir Goldstein
2019-02-06 14:14   ` Jan Kara
2019-01-10 17:04 ` [PATCH v5 02/17] fsnotify: remove dirent events from FS_EVENTS_POSS_ON_CHILD mask Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 03/17] fsnotify: send all event types to super block marks Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 04/17] fsnotify: move mask out of struct fsnotify_event Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 05/17] fanotify: rename struct fanotify_{,perm_}event_info Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 06/17] fanotify: open code fill_event_metadata() Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 07/17] fanotify: encode file identifier for FAN_REPORT_FID Amir Goldstein
2019-01-11  8:10   ` kbuild test robot
2019-01-11  8:37     ` Amir Goldstein
2019-01-18 18:39       ` Paul Burton
2019-01-10 17:04 ` [PATCH v5 08/17] fanotify: copy event fid info to user Amir Goldstein
2019-02-06 17:41   ` Jan Kara
2019-01-10 17:04 ` [PATCH v5 09/17] fanotify: enable FAN_REPORT_FID init flag Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 10/17] fanotify: cache fsid in fsnotify_mark_connector Amir Goldstein
2019-01-11  3:13   ` kbuild test robot
2019-01-14  7:30   ` Dan Carpenter
2019-01-14  7:30     ` Dan Carpenter
2019-01-14  9:17     ` Amir Goldstein
2019-02-07 14:48   ` Jan Kara
2019-02-07 16:31     ` Amir Goldstein
2019-02-08 10:15       ` Jan Kara
2019-01-10 17:04 ` Amir Goldstein [this message]
2019-01-10 17:04 ` [PATCH v5 12/17] fanotify: use vfs_get_fsid() helper instead of vfs_statfs() Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 13/17] fsnotify: report FS_ISDIR flag with MOVE_SELF and DELETE_SELF events Amir Goldstein
2019-02-07 14:57   ` Jan Kara
2019-01-10 17:04 ` [PATCH v5 14/17] fanotify: check FS_ISDIR flag instead of d_is_dir() Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 15/17] fanotify: support events with data type FSNOTIFY_EVENT_INODE Amir Goldstein
2019-02-07 15:18   ` Jan Kara
2019-02-07 16:10     ` Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 16/17] fanotify: add support for create/attrib/move/delete events Amir Goldstein
2019-01-10 17:04 ` [PATCH v5 17/17] fanotify: report FAN_ONDIR to listener with FAN_REPORT_FID Amir Goldstein
2019-02-07 16:26 ` [PATCH v5 00/17] fanotify: add support for more event types Jan Kara

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