mount: implement mounting properly

This also includes code that writes utmp/wtmp records when applicable,
making use the mount infrastructure to detct when those files are
accessible.

Finally, this also introduces a --dump-configuration-items switch.

1 files changed, 51 insertions, 6 deletions

diff --git a/mount.h b/mount.h
index 60585defc8..66992e10eb 100644
--- a/mount.h
+++ b/mount.h
@@ -28,31 +28,76 @@ typedef struct Mount Mount;
 
 typedef enum MountState {
         MOUNT_DEAD,
-        MOUNT_MOUNTING,
+        MOUNT_MOUNTING,               /* /bin/mount is running, but the mount is not done yet. */
+        MOUNT_MOUNTING_DONE,          /* /bin/mount is running, and the mount is done. */
         MOUNT_MOUNTED,
+        MOUNT_REMOUNTING,
         MOUNT_UNMOUNTING,
+        MOUNT_MOUNTING_SIGTERM,
+        MOUNT_MOUNTING_SIGKILL,
+        MOUNT_REMOUNTING_SIGTERM,
+        MOUNT_REMOUNTING_SIGKILL,
+        MOUNT_UNMOUNTING_SIGTERM,
+        MOUNT_UNMOUNTING_SIGKILL,
         MOUNT_MAINTAINANCE,
-        _MOUNT_STATE_MAX
+        _MOUNT_STATE_MAX,
+        _MOUNT_STATE_INVALID = -1
 } MountState;
 
+typedef enum MountExecCommand {
+        MOUNT_EXEC_MOUNT,
+        MOUNT_EXEC_UNMOUNT,
+        MOUNT_EXEC_REMOUNT,
+        _MOUNT_EXEC_COMMAND_MAX,
+        _MOUNT_EXEC_COMMAND_INVALID = -1
+} MountExecCommand;
+
+typedef struct MountParameters {
+        char *what;
+        char *options;
+        char *fstype;
+} MountParameters;
+
 struct Mount {
         Meta meta;
 
-        MountState state;
+        char *where;
 
-        char *what, *where;
+        MountParameters parameters_etc_fstab;
+        MountParameters parameters_proc_self_mountinfo;
+        MountParameters parameters_fragment;
 
         bool from_etc_fstab:1;
         bool from_proc_self_mountinfo:1;
+        bool from_fragment:1;
 
         /* Used while looking for mount points that vanished or got
          * added from/to /proc/self/mountinfo */
-        bool still_exists:1;
-        bool just_created:1;
+        bool is_mounted:1;
+        bool just_mounted:1;
+        bool just_changed:1;
+
+        bool failure:1;
+
+        usec_t timeout_usec;
+
+        ExecCommand exec_command[_MOUNT_EXEC_COMMAND_MAX];
+        ExecContext exec_context;
+
+        MountState state;
+
+        KillMode kill_mode;
+
+        ExecCommand* control_command;
+        pid_t control_pid;
+
+        Watch timer_watch;
 };
 
 extern const UnitVTable mount_vtable;
 
 void mount_fd_event(Manager *m, int events);
 
+int mount_path_is_mounted(Manager *m, const char* path);
+
 #endif