From: Darrick J. Wong <djwong@xxxxxxxxxx>
Send uevents when we mount and unmount the filesystem, so that we can
trigger systemd services.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/xfs_super.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 5aa51d5402809..06f0c00988fc8 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1136,12 +1136,28 @@ xfs_inodegc_free_percpu(
free_percpu(mp->m_inodegc);
}
+static void
+xfs_send_unmount_uevent(
+ struct xfs_mount *mp)
+{
+ char sid[256] = "";
+ char *env[] = {
+ "TYPE=mount",
+ sid,
+ NULL,
+ };
+
+ snprintf(sid, sizeof(sid), "SID=%s", mp->m_super->s_id);
+ kobject_uevent_env(&mp->m_kobj.kobject, KOBJ_REMOVE, env);
+}
+
static void
xfs_fs_put_super(
struct super_block *sb)
{
struct xfs_mount *mp = XFS_M(sb);
+ xfs_send_unmount_uevent(mp);
xfs_notice(mp, "Unmounting Filesystem %pU", &mp->m_sb.sb_uuid);
xfs_filestream_unmount(mp);
xfs_unmountfs(mp);
@@ -1504,6 +1520,29 @@ xfs_debugfs_mkdir(
return child;
}
+/*
+ * Send a uevent signalling that the mount succeeded so we can use udev rules
+ * to start background services.
+ */
+static void
+xfs_send_mount_uevent(
+ struct fs_context *fc,
+ struct xfs_mount *mp)
+{
+ char source[256] = "";
+ char sid[256] = "";
+ char *env[] = {
+ "TYPE=mount",
+ source,
+ sid,
+ NULL,
+ };
+
+ snprintf(source, sizeof(source), "SOURCE=%s", fc->source);
+ snprintf(sid, sizeof(sid), "SID=%s", mp->m_super->s_id);
+ kobject_uevent_env(&mp->m_kobj.kobject, KOBJ_ADD, env);
+}
+
static int
xfs_fs_fill_super(
struct super_block *sb,
@@ -1810,6 +1849,7 @@ xfs_fs_fill_super(
mp->m_debugfs_uuid = NULL;
}
+ xfs_send_mount_uevent(fc, mp);
return 0;
out_filestream_unmount:
