src/core/mount.h

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