1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
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 = -EINVAL,
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 = -EINVAL,
29 } MountResult;
30 
31 typedef struct MountParameters {
32         char *what;
33         char *options;
34         char *fstype;
35 } MountParameters;
36 
37 /* Used while looking for mount points that vanished or got added from/to /proc/self/mountinfo */
38 typedef enum MountProcFlags {
39         MOUNT_PROC_IS_MOUNTED   = 1 << 0,
40         MOUNT_PROC_JUST_MOUNTED = 1 << 1,
41         MOUNT_PROC_JUST_CHANGED = 1 << 2,
42 } MountProcFlags;
43 
44 struct Mount {
45         Unit meta;
46 
47         char *where;
48 
49         MountParameters parameters_proc_self_mountinfo;
50         MountParameters parameters_fragment;
51 
52         bool from_proc_self_mountinfo:1;
53         bool from_fragment:1;
54 
55         MountProcFlags proc_flags;
56 
57         bool sloppy_options;
58 
59         bool lazy_unmount;
60         bool force_unmount;
61 
62         bool read_write_only;
63 
64         MountResult result;
65         MountResult reload_result;
66         MountResult clean_result;
67 
68         mode_t directory_mode;
69 
70         usec_t timeout_usec;
71 
72         ExecCommand exec_command[_MOUNT_EXEC_COMMAND_MAX];
73 
74         ExecContext exec_context;
75         KillContext kill_context;
76         CGroupContext cgroup_context;
77 
78         ExecRuntime *exec_runtime;
79         DynamicCreds dynamic_creds;
80 
81         MountState state, deserialized_state;
82 
83         ExecCommand* control_command;
84         MountExecCommand control_command_id;
85         pid_t control_pid;
86 
87         sd_event_source *timer_event_source;
88 
89         unsigned n_retry_umount;
90 };
91 
92 extern const UnitVTable mount_vtable;
93 
94 void mount_fd_event(Manager *m, int events);
95 
96 const char* mount_exec_command_to_string(MountExecCommand i) _const_;
97 MountExecCommand mount_exec_command_from_string(const char *s) _pure_;
98 
99 const char* mount_result_to_string(MountResult i) _const_;
100 MountResult mount_result_from_string(const char *s) _pure_;
101 
102 DEFINE_CAST(MOUNT, Mount);
103