add a new tool for creating transient mount and automount units

This adds "systemd-mount" which is for transient mount and automount units what
"systemd-run" is for transient service, scope and timer units.

The tool allows establishing mounts and automounts during runtime. It is very
similar to the usual /bin/mount commands, but can pull in additional
dependenices on access (for example, it pulls in fsck automatically), an take
benefit of the automount logic.

This tool is particularly useful for mount removable file systems (such as USB
sticks), as the automount logic (together with automatic unmount-on-idle), as
well as automatic fsck on first access ensure that the removable file system
has a high chance to remain in a fully clean state even when it is unplugged
abruptly, and returns to a clean state on the next re-plug.

This is a follow-up for #2471, as it adds a simple client-side for the
transient automount logic added in that PR.

In later work it might make sense to invoke this tool automatically from udev
rules in order to implement a simpler and safer version of removable media
management á la udisks.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index 28dc778969..bfa04394fe 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -75,7 +75,6 @@ static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id
         return safe_atoi(p, mnt_id);
 }
 
-
 int fd_is_mount_point(int fd, const char *filename, int flags) {
         union file_handle_union h = FILE_HANDLE_INIT, h_parent = FILE_HANDLE_INIT;
         int mount_id = -1, mount_id_parent = -1;