src/core/mount.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010 Lennart Poettering
   8 ***/
   9
  10 typedef struct Mount Mount;
  11
  12 #include "kill.h"
  13 #include "dynamic-user.h"
  14
  15 typedef enum MountExecCommand {
  16         MOUNT_EXEC_MOUNT,
  17         MOUNT_EXEC_UNMOUNT,
  18         MOUNT_EXEC_REMOUNT,
  19         _MOUNT_EXEC_COMMAND_MAX,
  20         _MOUNT_EXEC_COMMAND_INVALID = -1
  21 } MountExecCommand;
  22
  23 typedef enum MountResult {
  24         MOUNT_SUCCESS,
  25         MOUNT_FAILURE_RESOURCES, /* a bit of a misnomer, just our catch-all error for errnos we didn't expect */
  26         MOUNT_FAILURE_TIMEOUT,
  27         MOUNT_FAILURE_EXIT_CODE,
  28         MOUNT_FAILURE_SIGNAL,
  29         MOUNT_FAILURE_CORE_DUMP,
  30         MOUNT_FAILURE_START_LIMIT_HIT,
  31         MOUNT_FAILURE_PROTOCOL,
  32         _MOUNT_RESULT_MAX,
  33         _MOUNT_RESULT_INVALID = -1
  34 } MountResult;
  35
  36 typedef struct MountParameters {
  37         char *what;
  38         char *options;
  39         char *fstype;
  40 } MountParameters;
  41
  42 struct Mount {
  43         Unit meta;
  44
  45         char *where;
  46
  47         MountParameters parameters_proc_self_mountinfo;
  48         MountParameters parameters_fragment;
  49
  50         bool from_proc_self_mountinfo:1;
  51         bool from_fragment:1;
  52
  53         /* Used while looking for mount points that vanished or got
  54          * added from/to /proc/self/mountinfo */
  55         bool is_mounted:1;
  56         bool just_mounted:1;
  57         bool just_changed:1;
  58
  59         bool sloppy_options;
  60
  61         bool lazy_unmount;
  62         bool force_unmount;
  63
  64         MountResult result;
  65         MountResult reload_result;
  66
  67         mode_t directory_mode;
  68
  69         usec_t timeout_usec;
  70
  71         ExecCommand exec_command[_MOUNT_EXEC_COMMAND_MAX];
  72
  73         ExecContext exec_context;
  74         KillContext kill_context;
  75         CGroupContext cgroup_context;
  76
  77         ExecRuntime *exec_runtime;
  78         DynamicCreds dynamic_creds;
  79
  80         MountState state, deserialized_state;
  81
  82         ExecCommand* control_command;
  83         MountExecCommand control_command_id;
  84         pid_t control_pid;
  85
  86         sd_event_source *timer_event_source;
  87
  88         unsigned n_retry_umount;
  89 };
  90
  91 extern const UnitVTable mount_vtable;
  92
  93 void mount_fd_event(Manager *m, int events);
  94
  95 const char* mount_exec_command_to_string(MountExecCommand i) _const_;
  96 MountExecCommand mount_exec_command_from_string(const char *s) _pure_;
  97
  98 const char* mount_result_to_string(MountResult i) _const_;
  99 MountResult mount_result_from_string(const char *s) _pure_;