src/dbus-mount.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   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
  28 #define BUS_MOUNT_INTERFACE                                             \
  29         " <interface name=\"org.freedesktop.systemd1.Mount\">\n"        \
  30         "  <property name=\"Where\" type=\"s\" access=\"read\"/>\n"     \
  31         "  <property name=\"What\" type=\"s\" access=\"read\"/>\n"      \
  32         "  <property name=\"Options\" type=\"s\" access=\"read\"/>\n"   \
  33         "  <property name=\"Type\" type=\"s\" access=\"read\"/>\n"      \
  34         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  35         BUS_EXEC_CONTEXT_INTERFACE                                      \
  36         "  <property name=\"KillMode\" type=\"s\" access=\"read\"/>\n"  \
  37         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  38         " </interface>\n"
  39
  40 #define INTROSPECTION                                                   \
  41         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  42         "<node>\n"                                                      \
  43         BUS_UNIT_INTERFACE                                              \
  44         BUS_MOUNT_INTERFACE                                             \
  45         BUS_PROPERTIES_INTERFACE                                        \
  46         BUS_INTROSPECTABLE_INTERFACE                                    \
  47         "</node>\n"
  48
  49 const char bus_mount_interface[] = BUS_MOUNT_INTERFACE;
  50
  51 static int bus_mount_append_what(Manager *n, DBusMessageIter *i, const char *property, void *data) {
  52         Mount *m = data;
  53         const char *d;
  54
  55         assert(n);
  56         assert(i);
  57         assert(property);
  58         assert(m);
  59
  60         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
  61                 d = m->parameters_proc_self_mountinfo.what;
  62         else if (m->from_fragment && m->parameters_fragment.what)
  63                 d = m->parameters_fragment.what;
  64         else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
  65                 d = m->parameters_etc_fstab.what;
  66         else
  67                 d = "";
  68
  69         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
  70                 return -ENOMEM;
  71
  72         return 0;
  73 }
  74
  75 static int bus_mount_append_options(Manager *n, DBusMessageIter *i, const char *property, void *data) {
  76         Mount *m = data;
  77         const char *d;
  78
  79         assert(n);
  80         assert(i);
  81         assert(property);
  82         assert(m);
  83
  84         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.options)
  85                 d = m->parameters_proc_self_mountinfo.options;
  86         else if (m->from_fragment && m->parameters_fragment.options)
  87                 d = m->parameters_fragment.options;
  88         else if (m->from_etc_fstab && m->parameters_etc_fstab.options)
  89                 d = m->parameters_etc_fstab.options;
  90         else
  91                 d = "";
  92
  93         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
  94                 return -ENOMEM;
  95
  96         return 0;
  97 }
  98
  99 static int bus_mount_append_type(Manager *n, DBusMessageIter *i, const char *property, void *data) {
 100         Mount *m = data;
 101         const char *d;
 102
 103         assert(n);
 104         assert(i);
 105         assert(property);
 106         assert(m);
 107
 108         if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.fstype)
 109                 d = m->parameters_proc_self_mountinfo.fstype;
 110         else if (m->from_fragment && m->parameters_fragment.fstype)
 111                 d = m->parameters_fragment.fstype;
 112         else if (m->from_etc_fstab && m->parameters_etc_fstab.fstype)
 113                 d = m->parameters_etc_fstab.fstype;
 114         else
 115                 d = "";
 116
 117         if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 DBusHandlerResult bus_mount_message_handler(Unit *u, DBusMessage *message) {
 124         const BusProperty properties[] = {
 125                 BUS_UNIT_PROPERTIES,
 126                 { "org.freedesktop.systemd1.Mount", "Where",       bus_property_append_string, "s", u->mount.where         },
 127                 { "org.freedesktop.systemd1.Mount", "What",        bus_mount_append_what,      "s", u                      },
 128                 { "org.freedesktop.systemd1.Mount", "Options",     bus_mount_append_options,   "s", u                      },
 129                 { "org.freedesktop.systemd1.Mount", "Type",        bus_mount_append_type,      "s", u                      },
 130                 { "org.freedesktop.systemd1.Mount", "TimeoutUSec", bus_property_append_usec,   "t", &u->mount.timeout_usec },
 131                 /* ExecCommand */
 132                 BUS_EXEC_CONTEXT_PROPERTIES("org.freedesktop.systemd1.Mount", u->mount.exec_context),
 133                 { "org.freedesktop.systemd1.Mount", "KillMode",    bus_unit_append_kill_mode,  "s", &u->mount.kill_mode    },
 134                 { "org.freedesktop.systemd1.Mount", "ControlPID",  bus_property_append_pid,    "u", &u->mount.control_pid  },
 135                 { NULL, NULL, NULL, NULL, NULL }
 136         };
 137
 138         return bus_default_message_handler(u->meta.manager, message, INTROSPECTION, properties);
 139 }