src/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 General Public License as published by
  10   the Free Software Foundation; either version 2 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   General Public License for more details.
  17
  18   You should have received a copy of the GNU 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-execute.h"
  27 #include "dbus-common.h"
  28
  29 #define BUS_MOUNT_INTERFACE                                             \
  30         " <interface name=\"org.freedesktop.systemd1.Mount\">\n"        \
  31         "  <property name=\"Where\" type=\"s\" access=\"read\"/>\n"     \
  32         "  <property name=\"What\" type=\"s\" access=\"read\"/>\n"      \
  33         "  <property name=\"Options\" type=\"s\" access=\"read\"/>\n"   \
  34         "  <property name=\"Type\" type=\"s\" access=\"read\"/>\n"      \
  35         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  36         BUS_EXEC_COMMAND_INTERFACE("ExecMount")                         \
  37         BUS_EXEC_COMMAND_INTERFACE("ExecUnmount")                       \
  38         BUS_EXEC_COMMAND_INTERFACE("ExecRemount")                       \
  39         BUS_EXEC_CONTEXT_INTERFACE                                      \
  40         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  41         "  <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
  42         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  43         " </interface>\n"
  44
  45 #define INTROSPECTION                                                   \
  46         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  47         "<node>\n"                                                      \
  48         BUS_UNIT_INTERFACE                                              \
  49         BUS_MOUNT_INTERFACE                                             \
  50         BUS_PROPERTIES_INTERFACE                                        \
  51         BUS_PEER_INTERFACE                                              \
  52         BUS_INTROSPECTABLE_INTERFACE                                    \
  53         "</node>\n"
  54
  55 #define INTERFACES_LIST                              \
  56         BUS_UNIT_INTERFACES_LIST                     \
  57         "org.freedesktop.systemd1.Mount\0"
  58
  59 const char bus_mount_interface[] _introspect_("Mount") = BUS_MOUNT_INTERFACE;
  60
  61 const char bus_mount_invalidating_properties[] =
  62         "What\0"
  63         "Options\0"
  64         "Type\0"
  65         "ExecMount\0"
  66         "ExecUnmount\0"
  67         "ExecRemount\0"
  68         "ControlPID\0"
  69         "Result\0";
  70
  71 static int bus_mount_append_what(DBusMessageIter *i, const char *property, void *data) {
  72         Mount *m = data;
  73         const char *d;
  74
  75         assert(i);
  76         assert(property);
  77         assert(m);
  78
  79         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
  80                 d = m->parameters_proc_self_mountinfo.what;
  81         else if (m->from_fragment && m->parameters_fragment.what)
  82                 d = m->parameters_fragment.what;
  83         else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
  84                 d = m->parameters_etc_fstab.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 if (m->from_etc_fstab && m->parameters_etc_fstab.options)
 107                 d = m->parameters_etc_fstab.options;
 108         else
 109                 d = "";
 110
 111         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
 112                 return -ENOMEM;
 113
 114         return 0;
 115 }
 116
 117 static int bus_mount_append_type(DBusMessageIter *i, const char *property, void *data) {
 118         Mount *m = data;
 119         const char *d;
 120
 121         assert(i);
 122         assert(property);
 123         assert(m);
 124
 125         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.fstype)
 126                 d = m->parameters_proc_self_mountinfo.fstype;
 127         else if (m->from_fragment && m->parameters_fragment.fstype)
 128                 d = m->parameters_fragment.fstype;
 129         else if (m->from_etc_fstab && m->parameters_etc_fstab.fstype)
 130                 d = m->parameters_etc_fstab.fstype;
 131         else
 132                 d = "";
 133
 134         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
 135                 return -ENOMEM;
 136
 137         return 0;
 138 }
 139
 140 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_mount_append_mount_result, mount_result, MountResult);
 141
 142 static const BusProperty bus_mount_properties[] = {
 143         { "Where",         bus_property_append_string, "s", offsetof(Mount, where),    true },
 144         { "What",          bus_mount_append_what,      "s", 0 },
 145         { "Options",       bus_mount_append_options,   "s", 0 },
 146         { "Type",          bus_mount_append_type,      "s", 0 },
 147         { "TimeoutUSec",   bus_property_append_usec,   "t", offsetof(Mount, timeout_usec)   },
 148         BUS_EXEC_COMMAND_PROPERTY("ExecMount",   offsetof(Mount, exec_command[MOUNT_EXEC_MOUNT]),   false),
 149         BUS_EXEC_COMMAND_PROPERTY("ExecUnmount", offsetof(Mount, exec_command[MOUNT_EXEC_UNMOUNT]), false),
 150         BUS_EXEC_COMMAND_PROPERTY("ExecRemount", offsetof(Mount, exec_command[MOUNT_EXEC_REMOUNT]), false),
 151         { "ControlPID",    bus_property_append_pid,    "u", offsetof(Mount, control_pid)    },
 152         { "DirectoryMode", bus_property_append_mode,   "u", offsetof(Mount, directory_mode) },
 153         { "Result",        bus_mount_append_mount_result, "s", offsetof(Mount, result)      },
 154         { NULL, }
 155 };
 156
 157 DBusHandlerResult bus_mount_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
 158         Mount *m = MOUNT(u);
 159
 160         const BusBoundProperties bps[] = {
 161                 { "org.freedesktop.systemd1.Unit",  bus_unit_properties,         u },
 162                 { "org.freedesktop.systemd1.Mount", bus_mount_properties,        m },
 163                 { "org.freedesktop.systemd1.Mount", bus_exec_context_properties, &m->exec_context },
 164                 { NULL, }
 165         };
 166
 167         return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps );
 168 }