From: Darrick J. Wong <[email protected]> Send uevents when we mount and unmount the filesystem, so that we can trigger systemd services.
Signed-off-by: Darrick J. Wong <[email protected]> --- 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:
