src/core/dbus-mount.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus-unit.h"
  25 #include "dbus-mount.h"
  26 #include "dbus-kill.h"
  27 #include "dbus-execute.h"
  28 #include "dbus-common.h"
  29
  30 #define BUS_MOUNT_INTERFACE                                             \
  31         " <interface name=\"org.freedesktop.systemd1.Mount\">\n"        \
  32         "  <property name=\"Where\" type=\"s\" access=\"read\"/>\n"     \
  33         "  <property name=\"What\" type=\"s\" access=\"read\"/>\n"      \
  34         "  <property name=\"Options\" type=\"s\" access=\"read\"/>\n"   \
  35         "  <property name=\"Type\" type=\"s\" access=\"read\"/>\n"      \
  36         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  37         BUS_EXEC_COMMAND_INTERFACE("ExecMount")                         \
  38         BUS_EXEC_COMMAND_INTERFACE("ExecUnmount")                       \
  39         BUS_EXEC_COMMAND_INTERFACE("ExecRemount")                       \
  40         BUS_EXEC_CONTEXT_INTERFACE                                      \
  41         BUS_KILL_CONTEXT_INTERFACE                                      \
  42         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  43         "  <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
  44         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  45         " </interface>\n"
  46
  47 #define INTROSPECTION                                                   \
  48         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  49         "<node>\n"                                                      \
  50         BUS_UNIT_INTERFACE                                              \
  51         BUS_MOUNT_INTERFACE                                             \
  52         BUS_PROPERTIES_INTERFACE                                        \
  53         BUS_PEER_INTERFACE                                              \
  54         BUS_INTROSPECTABLE_INTERFACE                                    \
  55         "</node>\n"
  56
  57 #define INTERFACES_LIST                              \
  58         BUS_UNIT_INTERFACES_LIST                     \
  59         "org.freedesktop.systemd1.Mount\0"
  60
  61 const char bus_mount_interface[] _introspect_("Mount") = BUS_MOUNT_INTERFACE;
  62
  63 const char bus_mount_invalidating_properties[] =
  64         "What\0"
  65         "Options\0"
  66         "Type\0"
  67         "ExecMount\0"
  68         "ExecUnmount\0"
  69         "ExecRemount\0"
  70         "ControlPID\0"
  71         "Result\0";
  72
  73 static int bus_mount_append_what(DBusMessageIter *i, const char *property, void *data) {
  74         Mount *m = data;
  75         const char *d;
  76
  77         assert(i);
  78         assert(property);
  79         assert(m);
  80
  81         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
  82                 d = m->parameters_proc_self_mountinfo.what;
  83         else if (m->from_fragment && m->parameters_fragment.what)
  84                 d = m->parameters_fragment.what;
  85         else
  86                 d = "";
  87
  88         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
  89                 return -ENOMEM;
  90
  91         return 0;
  92 }
  93
  94 static int bus_mount_append_options(DBusMessageIter *i, const char *property, void *data) {
  95         Mount *m = data;
  96         const char *d;
  97
  98         assert(i);
  99         assert(property);
 100         assert(m);
 101
 102         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.options)
 103                 d = m->parameters_proc_self_mountinfo.options;
 104         else if (m->from_fragment && m->parameters_fragment.options)
 105                 d = m->parameters_fragment.options;
 106         else
 107                 d = "";
 108
 109         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
 110                 return -ENOMEM;
 111
 112         return 0;
 113 }
 114
 115 static int bus_mount_append_type(DBusMessageIter *i, const char *property, void *data) {
 116         Mount *m = data;
 117         const char *d;
 118
 119         assert(i);
 120         assert(property);
 121         assert(m);
 122
 123         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.fstype)
 124                 d = m->parameters_proc_self_mountinfo.fstype;
 125         else if (m->from_fragment && m->parameters_fragment.fstype)
 126                 d = m->parameters_fragment.fstype;
 127         else
 128                 d = "";
 129
 130         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
 131                 return -ENOMEM;
 132
 133         return 0;
 134 }
 135
 136 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_mount_append_mount_result, mount_result, MountResult);
 137
 138 static const BusProperty bus_mount_properties[] = {
 139         { "Where",         bus_property_append_string, "s", offsetof(Mount, where),    true },
 140         { "What",          bus_mount_append_what,      "s", 0 },
 141         { "Options",       bus_mount_append_options,   "s", 0 },
 142         { "Type",          bus_mount_append_type,      "s", 0 },
 143         { "TimeoutUSec",   bus_property_append_usec,   "t", offsetof(Mount, timeout_usec)   },
 144         BUS_EXEC_COMMAND_PROPERTY("ExecMount",   offsetof(Mount, exec_command[MOUNT_EXEC_MOUNT]),   false),
 145         BUS_EXEC_COMMAND_PROPERTY("ExecUnmount", offsetof(Mount, exec_command[MOUNT_EXEC_UNMOUNT]), false),
 146         BUS_EXEC_COMMAND_PROPERTY("ExecRemount", offsetof(Mount, exec_command[MOUNT_EXEC_REMOUNT]), false),
 147         { "ControlPID",    bus_property_append_pid,    "u", offsetof(Mount, control_pid)    },
 148         { "DirectoryMode", bus_property_append_mode,   "u", offsetof(Mount, directory_mode) },
 149         { "Result",        bus_mount_append_mount_result, "s", offsetof(Mount, result)      },
 150         { NULL, }
 151 };
 152
 153 DBusHandlerResult bus_mount_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
 154         Mount *m = MOUNT(u);
 155
 156         const BusBoundProperties bps[] = {
 157                 { "org.freedesktop.systemd1.Unit",  bus_unit_properties,         u },
 158                 { "org.freedesktop.systemd1.Mount", bus_mount_properties,        m },
 159                 { "org.freedesktop.systemd1.Mount", bus_exec_context_properties, &m->exec_context },
 160                 { "org.freedesktop.systemd1.Mount", bus_kill_context_properties, &m->kill_context },
 161                 { NULL, }
 162         };
 163
 164         return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps );
 165 }