src/core/dbus-mount.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "bus-get-properties.h"
   4 #include "dbus-cgroup.h"
   5 #include "dbus-execute.h"
   6 #include "dbus-kill.h"
   7 #include "dbus-mount.h"
   8 #include "dbus-util.h"
   9 #include "mount.h"
  10 #include "string-util.h"
  11 #include "unit.h"
  12 #include "utf8.h"
  13
  14 static int property_get_what(
  15                 sd_bus *bus,
  16                 const char *path,
  17                 const char *interface,
  18                 const char *property,
  19                 sd_bus_message *reply,
  20                 void *userdata,
  21                 sd_bus_error *error) {
  22
  23         _cleanup_free_ char *escaped = NULL;
  24         Mount *m = ASSERT_PTR(userdata);
  25
  26         assert(bus);
  27         assert(reply);
  28
  29         escaped = mount_get_what_escaped(m);
  30         if (!escaped)
  31                 return -ENOMEM;
  32
  33         return sd_bus_message_append_basic(reply, 's', escaped);
  34 }
  35
  36 static int property_get_options(
  37                 sd_bus *bus,
  38                 const char *path,
  39                 const char *interface,
  40                 const char *property,
  41                 sd_bus_message *reply,
  42                 void *userdata,
  43                 sd_bus_error *error) {
  44
  45         _cleanup_free_ char *escaped = NULL;
  46         Mount *m = ASSERT_PTR(userdata);
  47
  48         assert(bus);
  49         assert(reply);
  50
  51         escaped = mount_get_options_escaped(m);
  52         if (!escaped)
  53                 return -ENOMEM;
  54
  55         return sd_bus_message_append_basic(reply, 's', escaped);
  56 }
  57
  58 static BUS_DEFINE_PROPERTY_GET(property_get_type, "s", Mount, mount_get_fstype);
  59 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, mount_result, MountResult);
  60
  61 const sd_bus_vtable bus_mount_vtable[] = {
  62         SD_BUS_VTABLE_START(0),
  63         SD_BUS_PROPERTY("Where", "s", NULL, offsetof(Mount, where), SD_BUS_VTABLE_PROPERTY_CONST),
  64         SD_BUS_PROPERTY("What", "s", property_get_what, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  65         SD_BUS_PROPERTY("Options","s", property_get_options, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  66         SD_BUS_PROPERTY("Type", "s", property_get_type, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  67         SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Mount, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
  68         SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Mount, control_pid.pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  69         SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Mount, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  70         SD_BUS_PROPERTY("SloppyOptions", "b", bus_property_get_bool, offsetof(Mount, sloppy_options), SD_BUS_VTABLE_PROPERTY_CONST),
  71         SD_BUS_PROPERTY("LazyUnmount", "b", bus_property_get_bool, offsetof(Mount, lazy_unmount), SD_BUS_VTABLE_PROPERTY_CONST),
  72         SD_BUS_PROPERTY("ForceUnmount", "b", bus_property_get_bool, offsetof(Mount, force_unmount), SD_BUS_VTABLE_PROPERTY_CONST),
  73         SD_BUS_PROPERTY("ReadWriteOnly", "b", bus_property_get_bool, offsetof(Mount, read_write_only), SD_BUS_VTABLE_PROPERTY_CONST),
  74         SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Mount, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  75         SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(Unit, ref_uid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  76         SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(Unit, ref_gid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  77         BUS_EXEC_COMMAND_VTABLE("ExecMount", offsetof(Mount, exec_command[MOUNT_EXEC_MOUNT]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  78         BUS_EXEC_COMMAND_VTABLE("ExecUnmount", offsetof(Mount, exec_command[MOUNT_EXEC_UNMOUNT]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  79         BUS_EXEC_COMMAND_VTABLE("ExecRemount", offsetof(Mount, exec_command[MOUNT_EXEC_REMOUNT]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  80         SD_BUS_VTABLE_END
  81 };
  82
  83 static int bus_mount_set_transient_property(
  84                 Mount *m,
  85                 const char *name,
  86                 sd_bus_message *message,
  87                 UnitWriteFlags flags,
  88                 sd_bus_error *error) {
  89
  90         Unit *u = UNIT(m);
  91
  92         assert(m);
  93         assert(name);
  94         assert(message);
  95
  96         flags |= UNIT_PRIVATE;
  97
  98         if (streq(name, "Where"))
  99                 return bus_set_transient_path(u, name, &m->where, message, flags, error);
 100
 101         if (streq(name, "What"))
 102                 return bus_set_transient_string(u, name, &m->parameters_fragment.what, message, flags, error);
 103
 104         if (streq(name, "Options"))
 105                 return bus_set_transient_string(u, name, &m->parameters_fragment.options, message, flags, error);
 106
 107         if (streq(name, "Type"))
 108                 return bus_set_transient_string(u, name, &m->parameters_fragment.fstype, message, flags, error);
 109
 110         if (streq(name, "TimeoutUSec"))
 111                 return bus_set_transient_usec_fix_0(u, name, &m->timeout_usec, message, flags, error);
 112
 113         if (streq(name, "DirectoryMode"))
 114                 return bus_set_transient_mode_t(u, name, &m->directory_mode, message, flags, error);
 115
 116         if (streq(name, "SloppyOptions"))
 117                 return bus_set_transient_bool(u, name, &m->sloppy_options, message, flags, error);
 118
 119         if (streq(name, "LazyUnmount"))
 120                 return bus_set_transient_bool(u, name, &m->lazy_unmount, message, flags, error);
 121
 122         if (streq(name, "ForceUnmount"))
 123                 return bus_set_transient_bool(u, name, &m->force_unmount, message, flags, error);
 124
 125         if (streq(name, "ReadWriteOnly"))
 126                 return bus_set_transient_bool(u, name, &m->read_write_only, message, flags, error);
 127
 128         return 0;
 129 }
 130
 131 int bus_mount_set_property(
 132                 Unit *u,
 133                 const char *name,
 134                 sd_bus_message *message,
 135                 UnitWriteFlags flags,
 136                 sd_bus_error *error) {
 137
 138         Mount *m = MOUNT(u);
 139         int r;
 140
 141         assert(m);
 142         assert(name);
 143         assert(message);
 144
 145         r = bus_cgroup_set_property(u, &m->cgroup_context, name, message, flags, error);
 146         if (r != 0)
 147                 return r;
 148
 149         if (u->transient && u->load_state == UNIT_STUB) {
 150                 /* This is a transient unit, let's load a little more */
 151
 152                 r = bus_mount_set_transient_property(m, name, message, flags, error);
 153                 if (r != 0)
 154                         return r;
 155
 156                 r = bus_exec_context_set_transient_property(u, &m->exec_context, name, message, flags, error);
 157                 if (r != 0)
 158                         return r;
 159
 160                 r = bus_kill_context_set_transient_property(u, &m->kill_context, name, message, flags, error);
 161                 if (r != 0)
 162                         return r;
 163         }
 164
 165         return 0;
 166 }
 167
 168 int bus_mount_commit_properties(Unit *u) {
 169         assert(u);
 170
 171         unit_realize_cgroup(u);
 172
 173         return 0;
 174 }